--- /dev/null
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <405gp_i2c.h>
+#include <command.h>
+#include <cmd_nvedit.h>
+#include <cmd_bootm.h>
+#include <rtc.h>
+#include <net.h>
+#include <malloc.h>
+
+#define L1_MEMSIZE (32*1024*1024)
+
+/* the std. DHCP stufff */
+#define DHCP_ROUTER 3
+#define DHCP_NETMASK 1
+#define DHCP_BOOTFILE 67
+#define DHCP_ROOTPATH 17
+#define DHCP_HOSTNAME 12
+
+/* some extras used by CRAY
+ *
+ * on the server this looks like:
+ *
+ * option L1-initrd-image code 224 = string;
+ * option L1-initrd-image "/opt/craysv2/craymcu/l1/flash/initrd.image"
+ */
+#define DHCP_L1_INITRD 224
+
+/* new, [better?] way via official vendor-extensions, defining an option
+ * space.
+ * on the server this looks like:
+ *
+ * option space U-Boot;
+ * option U-Boot.initrd code 3 = string;
+ * option U-Boot.bootcmd code 4 = string;
+ * option U-Boot.bootflags code 5 = string;
+ * option U-Boot.rootdev code 6 = string;
+ */
+#define DHCP_VENDOR_SPECX 43
+#define DHCP_VX_INITRD 3
+#define DHCP_VX_BOOTCMD 4
+#define DHCP_VX_BOOTFLAGS 5
+#define DHCP_VX_ROOTDEV 6
+
+/* Things DHCP server can tellme about. If there's no flash address, then
+ * they dont participate in 'update' to flash, and we force their values
+ * back to '0' every boot to be sure to get them fresh from DHCP. Yes, I
+ * know this is a pain...
+ *
+ * If I get no bootfile, boot from flash. If rootpath, use that. If no
+ * rootpath use initrd in flash.
+ */
+typedef struct dhcp_item_s {
+ u8 dhcp_option;
+ u8 dhcp_vendor_option;
+ char *dhcpvalue;
+ char *envname;
+} dhcp_item_t;
+static dhcp_item_t Things[] = {
+ {DHCP_ROUTER, 0, NULL, "gateway"},
+ {DHCP_NETMASK, 0, NULL, "netmask"},
+ {DHCP_BOOTFILE, 0, NULL, "bootfile"},
+ {DHCP_ROOTPATH, 0, NULL, "rootpath"},
+ {DHCP_HOSTNAME, 0, NULL, "hostname"},
+ {DHCP_L1_INITRD, 0, NULL, "initrd"},
+/* and the other way.. */
+ {DHCP_VENDOR_SPECX, DHCP_VX_INITRD, NULL, "initrd"},
+ {DHCP_VENDOR_SPECX, DHCP_VX_BOOTCMD, NULL, "bootcmd"},
+ {DHCP_VENDOR_SPECX, DHCP_VX_BOOTFLAGS, NULL, NULL},
+ {DHCP_VENDOR_SPECX, DHCP_VX_ROOTDEV, NULL, NULL},
+};
+
+#define N_THINGS ((sizeof(Things))/(sizeof(dhcp_item_t)))
+
+static void init_ecc_sdram (void);
+
+/* ------------------------------------------------------------------------- */
+int board_pre_init (void)
+{
+ init_ecc_sdram ();
+ mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
+ mtdcr (uicer, 0x00000000); /* disable all ints */
+ mtdcr (uiccr, 0x00000020); /* set all but FPGA SMI to be non-critical */
+ mtdcr (uicpr, 0xFFFFFFE0); /* set int polarities */
+ mtdcr (uictr, 0x10000000); /* set int trigger levels */
+ mtdcr (uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */
+ mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
+ return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+int checkboard (void)
+{
+ return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+int misc_init_r (void)
+{
+ unsigned char *s, *e;
+ image_header_t *hdr;
+ time_t timestamp;
+ struct rtc_time tm;
+
+ hdr = (image_header_t *) (CFG_MONITOR_BASE - sizeof (image_header_t));
+ timestamp = (time_t) hdr->ih_time;
+ to_tm (timestamp, &tm);
+ printf ("Welcome to U-Boot on Cray L1. Compiled %4d-%02d-%02d %2d:%02d:%02d (UTC)\n", tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
+
+#define FACTORY_SETTINGS 0xFFFC0000
+ if ((s = getenv ("ethaddr")) == NULL) {
+ e = (unsigned char *) (FACTORY_SETTINGS);
+ if (*(e + 0) != '0'
+ || *(e + 1) != '0'
+ || *(e + 2) != ':'
+ || *(e + 3) != '4' || *(e + 4) != '0' || *(e + 17) != '\0') {
+ printf ("No valid MAC address in flash location 0x3C0000!\n");
+ } else {
+ printf ("Factory MAC: %s\n", e);
+ setenv ("ethaddr", e);
+ }
+ }
+ return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+long int initdram (int board_type)
+{
+ return (L1_MEMSIZE);
+}
+
+/* ------------------------------------------------------------------------- */
+/* stubs so we can print dates w/o any nvram RTC.*/
+void rtc_get (struct rtc_time *tmp)
+{
+ return;
+}
+void rtc_set (struct rtc_time *tmp)
+{
+ return;
+}
+void rtc_reset (void)
+{
+ return;
+}
+
+/* ------------------------------------------------------------------------- */
+/* Do sdram bank init in C so I can read it..
+ */
+static void init_ecc_sdram (void)
+{
+ unsigned long tmp, *p;
+
+ /* write SDRAM bank 0 register */
+ mtdcr (memcfga, mem_mb0cf);
+ mtdcr (memcfgd, 0x00062001);
+
+/* Set the SDRAM Timing reg, SDTR1 and the refresh timer reg, RTR. */
+/* To set the appropriate timings, we need to know the SDRAM speed. */
+/* We can use the PLB speed since the SDRAM speed is the same as */
+/* the PLB speed. The PLB speed is the FBK divider times the */
+/* 405GP reference clock, which on the L1 is 25Mhz. */
+/* Thus, if FBK div is 2, SDRAM is 50Mhz; if FBK div is 3, SDRAM is */
+/* 150Mhz; if FBK is 3, SDRAM is 150Mhz. */
+
+ /* divisor = ((mfdcr(strap)>> 28) & 0x3); */
+
+/* write SDRAM timing for 100Mhz. */
+ mtdcr (memcfga, mem_sdtr1);
+ mtdcr (memcfgd, 0x0086400D);
+
+/* write SDRAM refresh interval register */
+ mtdcr (memcfga, mem_rtr);
+ mtdcr (memcfgd, 0x05F00000);
+ udelay (200);
+
+/* sdram controller.*/
+ mtdcr (memcfga, mem_mcopt1);
+ mtdcr (memcfgd, 0x90800000);
+ udelay (200);
+
+/* disable ECC on all banks */
+ mtdcr (memcfga, mem_ecccf);
+ tmp = mfdcr (memcfgd);
+ tmp &= 0xff0fffff;
+ mtdcr (memcfga, mem_ecccf);
+ mtdcr (memcfgd, tmp);
+
+/* set up SDRAM Controller with ECC enabled */
+ mtdcr (memcfga, mem_mcopt1);
+ tmp = (mfdcr (memcfgd) & ~0xFFE00000) | 0x90800000;
+ mtdcr (memcfga, mem_mcopt1);
+ mtdcr (memcfgd, tmp);
+ udelay (600);
+
+/* fill all the memory */
+ for (p = (unsigned long) 0; ((unsigned long) p < L1_MEMSIZE);
+ *p++ = 0L);
+ udelay (400);
+ mtdcr (memcfga, mem_ecccf);
+ tmp = mfdcr (memcfgd);
+
+/* enable ECC on bank 0 */
+ tmp |= 0x00800000;
+ mtdcr (memcfgd, tmp);
+ udelay (400);
+
+ return;
+}
+
+/* ------------------------------------------------------------------------- */
+static u8 *dhcp_env_update (u8 thing, u8 * pop)
+{
+ u8 i, oplen;
+
+ oplen = *(pop + 1);
+
+ if ((Things[thing].dhcpvalue = malloc (oplen)) == NULL) {
+ printf ("Whoops! failed to malloc space for DHCP thing %s\n",
+ Things[thing].envname);
+ return NULL;
+ }
+ for (i = 0; (i < oplen); i++)
+ if ((*(Things[thing].dhcpvalue + i) = *(pop + 2 + i)) == ' ')
+ break;
+ *(Things[thing].dhcpvalue + i) = '\0';
+
+/* set env. */
+ if (Things[thing].envname)
+ setenv (Things[thing].envname, Things[thing].dhcpvalue);
+ return (Things[thing].dhcpvalue);
+}
+
+/* ------------------------------------------------------------------------- */
+u8 *dhcp_vendorex_prep (u8 * e)
+{
+ u8 thing;
+
+/* ask for the things I want. */
+ *e++ = 55; /* Parameter Request List */
+ *e++ = N_THINGS;
+ for (thing = 0; thing < N_THINGS; thing++)
+ *e++ = Things[thing].dhcp_option;
+ *e++ = 255;
+
+ return e;
+}
+
+/* ------------------------------------------------------------------------- */
+/* .. return NULL means it wasnt mine, non-null means I got it..*/
+u8 *dhcp_vendorex_proc (u8 * pop)
+{
+ u8 oplen, *sub_op, sub_oplen, *retval;
+ u8 thing = 0;
+
+ retval = NULL;
+ oplen = *(pop + 1);
+/* if pop is vender spec indicator, there are sub-options. */
+ if (*pop == DHCP_VENDOR_SPECX) {
+ for (sub_op = pop + 2;
+ oplen && (sub_oplen = *(sub_op + 1));
+ oplen -= sub_oplen, sub_op += (sub_oplen + 2)) {
+ for (thing = 0; thing < N_THINGS; thing++) {
+ if (*sub_op == Things[thing].dhcp_vendor_option) {
+ if (!(retval = dhcp_env_update (thing, sub_op))) {
+ return NULL;
+ }
+ }
+ }
+ }
+ } else {
+ for (thing = 0; thing < N_THINGS; thing++) {
+ if (*pop == Things[thing].dhcp_option)
+ if (!(retval = dhcp_env_update (thing, pop)))
+ return NULL;
+ }
+ }
+ return (thing >= N_THINGS ? NULL : pop);
+}
--- /dev/null
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/****************************************************************************
+ * FLASH Memory Map as used by CRAY L1, 4MB AMD29F032B flash chip
+ *
+ * Start Address Length
+ * +++++++++++++++++++++++++ 0xFFC0_0000 Start of Flash -----------------
+ * | Failsafe Linux Image | (1M)
+ * +=======================+ 0xFFD0_0000
+ * | (Reserved FlashFiles) | (1M)
+ * +=======================+ 0xFFE0_0000
+ * | Failsafe RootFS | (1M)
+ * +=======================+ 0xFFF0_0000
+ * | |
+ * | U N U S E D |
+ * | |
+ * +-----------------------+ 0xFFFD_0000 U-Boot image header (64 bytes)
+ * | environment settings | (64k)
+ * +-----------------------+ 0xFFFE_0000 U-Boot image header (64 bytes)
+ * | U-Boot | 0xFFFE_0040 _start of U-Boot
+ * | | 0xFFFE_FFFC reset vector - branch to _start
+ * +++++++++++++++++++++++++ 0xFFFF_FFFF End of Flash -----------------
+ *****************************************************************************/
--- /dev/null
+/*
+ * include/local.h - local configuration options, board specific
+ */
+
+#ifndef __LOCAL_H
+#define __LOCAL_H
+
+/*
+ * High Level Configuration Options
+ * (easy to change)
+ */
+
+/* This tells U-Boot that the config options are compiled in */
+/* #undef ENV_IS_EMBEDDED */
+/* Don't touch this! U-Boot figures this out based on other
+ * magic. */
+
+/* Uncomment and define any of the below options */
+
+/* #define CONFIG_750CX */ /* The 750CX doesn't support as many things in L2CR */
+ /* Note: If you defined CONFIG_EVB64260_750CX this */
+ /* gets defined automatically. */
+
+/* These want string arguments */
+/* #define CONFIG_BOOTARGS */
+/* #define CONFIG_BOOTCOMMAND */
+/* #define CONFIG_RAMBOOTCOMMAND */
+/* #define CONFIG_NFSBOOTCOMMAND */
+/* #define CFG_AUTOLOAD */
+/* #define CONFIG_PREBOOT */
+
+/* These don't */
+
+/* #define CONFIG_BOOTDELAY */
+/* #define CONFIG_BAUDRATE */
+/* #define CONFIG_LOADS_ECHO */
+/* #define CONFIG_ETHADDR */
+/* #define CONFIG_ETH2ADDR */
+/* #define CONFIG_ETH3ADDR */
+/* #define CONFIG_IPADDR */
+/* #define CONFIG_SERVERIP */
+/* #define CONFIG_ROOTPATH */
+/* #define CONFIG_GATEWAYIP */
+/* #define CONFIG_NETMASK */
+/* #define CONFIG_HOSTNAME */
+/* #define CONFIG_BOOTFILE */
+/* #define CONFIG_LOADADDR */
+
+/* these hardware addresses are pretty bogus, please change them to
+ suit your needs */
+
+/* first ethernet */
+#define CONFIG_ETHADDR 00:11:22:33:44:55
+
+/* next two ethernet hwaddrs */
+#define CONFIG_ETH1ADDR 00:11:22:33:44:66
+#define CONFIG_ETH2ADDR 00:11:22:33:44:77
+
+#define CONFIG_ENV_OVERWRITE
+#endif /* __CONFIG_H */
--- /dev/null
+/*
+ * The GENIETV is using the following physical memorymap (copied from
+ * the FADS configuration):
+ *
+ * ff020000 -> ff02ffff : pcmcia
+ * ff010000 -> ff01ffff : BCSR connected to CS1, setup by 8xxROM
+ * ff000000 -> ff00ffff : IMAP internal in the cpu
+ * 02800000 -> 0287ffff : flash connected to CS0
+ * 00000000 -> nnnnnnnn : sdram setup by U-Boot
+ *
+ * CS pins are connected as follows:
+ *
+ * CS0 -512Kb boot flash
+ * CS1 - SDRAM #1
+ * CS2 - SDRAM #2
+ * CS3 - Flash #1
+ * CS4 - Flash #2
+ * CS5 - LON (if present)
+ * CS6 - PCMCIA #1
+ * CS7 - PCMCIA #2
+ *
+ * Ports are configured as follows:
+ *
+ * PA7 - SDRAM banks enable
+ */
--- /dev/null
+/*
+ * (C) Copyright 2002 Wolfgang Grandegger <wg@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _PN62_H_
+#define _PN62_H_
+
+/*
+ * Definitions for the Intel Bridge 21554 or 21555.
+ */
+#define I2155X_VPD_ADDR 0xe6
+#define I2155X_VPD_DATA 0xe8
+
+#define I2155X_VPD_START 0x80
+#define I2155X_VPD_SN_START 0x80
+#define I2155X_VPD_SN_SIZE 0x10
+#define I2155X_VPD_MAC0_START 0x90
+#define I2155X_VPD_MAC1_START 0x96
+
+#define I2155X_SCRAPAD_ADDR 0xa8
+#define I2155X_SCRAPAD_MAX 8
+
+#define I2155X_BAR2_BASE 0x98
+#define I2155X_BAR3_BASE 0x9c
+#define I2155X_BAR4_BASE 0xa0
+
+#define I2155X_BAR2_SETUP 0xb0
+#define I2155X_BAR3_SETUP 0xb4
+#define I2155X_BAR4_SETUP 0xb8
+
+/*
+ * Interrupt request numbers
+ */
+#define PN62_IRQ_HOST 0x0
+#define PN62_IRQ_PLX9054 0x1
+#define PN62_IRQ_ETH0 0x2
+#define PN62_IRQ_ETH1 0x3
+#define PN62_IRQ_COM1 0x4
+#define PN62_IRQ_COM2 0x4
+
+/*
+ * Miscellaneous definitons.
+ */
+#define PN62_SMEM_DEFAULT 0x1f00000
+
+/*
+ * Definitions for boot protocol using Scratchpad registers.
+ */
+#define BOOT_DONE 0
+#define BOOT_DONE_CLEAR 0x00dead00
+#define BOOT_DONE_ERROR 0xbad0dead
+#define BOOT_DONE_U_BOOT 0x12345678
+#define BOOT_DONE_LINUX 0x87654321
+#define BOOT_CMD 1
+#define BOOT_CMD_MOVE 0x1
+#define BOOT_CMD_BOOT 0x2
+#define BOOT_DATA 2
+#define BOOT_PROTO 3
+#define BOOT_PROTO_READY 0x23456789
+#define BOOT_PROTO_CLEAR 0x00000000
+#define BOOT_STATUS 4
+
+/*
+ * LED Definitions:
+ */
+#define PN62_LED_BASE 0xff800300
+#define PN62_LED_MAX 12
+
+/*
+ * LED0 - 7 mounted on top of board, D1 - D8
+ * LED8 - 11 upper four LEDs on the front panel of the board.
+ */
+#define LED_0 0x00 /* OFF */
+#define LED_1 0x01 /* ON */
+#define LED_SLOW_CLOCK 0x02 /* SLOW 1Hz ish */
+#define LED_nSLOW_CLOCK 0x03 /* inverse of above */
+#define LED_WATCHDOG_OUT 0x06 /* Reset Watchdog level */
+#define LED_WATCHDOG_CLOCK 0x07 /* clock to watchdog */
+
+/*
+ * LED's currently setup in AMD79C973 device as the following:
+ * LED0 100Mbit
+ * LED1 LNKSE
+ * LED2 TX Activity
+ * LED3 RX Activity
+ */
+#define LED_E0_LED0 0x08 /* Ethernet Port 0 LED 0 */
+#define LED_E0_LED1 0x09 /* Ethernet Port 0 LED 1 */
+#define LED_E0_LED2 0x0A /* Ethernet Port 0 LED 2 */
+#define LED_E0_LED3 0x0B /* Ethernet Port 0 LED 3 */
+#define LED_E1_LED0 0x0C /* Ethernet Port 1 LED 0 */
+#define LED_E1_LED1 0x0D /* Ethernet Port 1 LED 1 */
+#define LED_E1_LED2 0x0E /* Ethernet Port 1 LED 2 */
+#define LED_E1_LED3 0x0F /* Ethernet Port 1 LED 3 */
+#define LED_STROBE0 0x10 /* Processor Strobe 0 */
+#define LED_STROBE1 0x11 /* Processor Strobe 1 */
+#define LED_STROBE2 0x12 /* Processor Strobe 2 */
+#define LED_STROBE3 0x13 /* Processor Strobe 3 */
+#define LED_STROBE4 0x14 /* Processor Strobe 4 */
+#define LED_STROBE5 0x15 /* Processor Strobe 5 */
+#define LED_STROBE6 0x16 /* Processor Strobe 6 */
+#define LED_STROBE7 0x17 /* Processor Strobe 7 */
+#define LED_HOST_STROBE0 0x18 /* Host strobe 0 */
+#define LED_HOST_STROBE1 0x19 /* Host strobe 1 */
+#define LED_HOST_STROBE2 0x1A /* Host strobe 2 */
+#define LED_HOST_STROBE3 0x1B /* Host strobe 3 */
+#define LED_HOST_STROBE4 0x1C /* Host strobe 4 */
+#define LED_HOST_STROBE5 0x1D /* Host strobe 5 */
+#define LED_HOST_STROBE6 0x1E /* Host strobe 6 */
+#define LED_HOST_STROBE7 0x1F /* Host strobe 7 */
+#define LED_MPC_INT0 0x20 /* MPC8240 INT 0 */
+#define LED_MPC_INT1 0x21 /* MPC8240 INT 1 */
+#define LED_MPC_INT2 0x22 /* MPC8240 INT 2 */
+#define LED_MPC_INT3 0x23 /* MPC8240 INT 3 */
+#define LED_MPC_INT4 0x24 /* MPC8240 INT 4 */
+#define LED_UART0_CS 0x25 /* UART 0 Chip Select */
+#define LED_UART1_CS 0x26 /* UART 1 Chip Select */
+#define LED_SRAM_CS 0x27 /* SRAM Chip Select */
+#define LED_SRAM_WR 0x28 /* SRAM WR Signal */
+#define LED_SRAM_RD 0x29 /* SRAM RD Signal */
+#define LED_MPC_RCS0 0x2A /* MPC8240 RCS0 Signal */
+#define LED_S_PCI_FRAME 0x2B /* Secondary PCI Frame Signal */
+#define LED_MPC_CS0 0x2C /* MPC8240 CS0 Signal */
+#define LED_HOST_INT 0x2D /* MPC8240 to Host Interrupt signal */
+#define LED_LAST_FUNCTION LED_HOST_INT /* last function */
+
+/*
+ * Forward declarations
+ */
+int i2155x_init (void);
+void i2155x_write_scrapad(int idx, u32 val);
+u32 i2155x_read_scrapad (int idx);
+void i2155x_set_bar_base (int bar, u32 addr);
+int i2155x_read_vpd (int offset, int size, unsigned char *data);
+
+int am79c95x_init (void);
+
+void set_led (unsigned int number, unsigned int function);
+void fatal_error (unsigned int error_code);
+void show_startup_phase (int phase);
+
+
+#endif /* _PN62_H_ */
--- /dev/null
+/*
+ * BedBug Functions
+ */
+
+#include <common.h>
+#include <command.h>
+#include <linux/ctype.h>
+#include <net.h>
+
+#include <cmd_bedbug.h>
+#include <bedbug/bedbug.h>
+#include <bedbug/regs.h>
+#include <bedbug/ppc.h>
+#include <elf.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
+
+#ifndef MAX
+#define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+extern void show_regs __P((struct pt_regs*));
+extern int run_command __P((const char*, int));
+extern char console_buffer[];
+
+ulong dis_last_addr = 0; /* Last address disassembled */
+ulong dis_last_len = 20; /* Default disassembler length */
+CPU_DEBUG_CTX bug_ctx; /* Bedbug context structure */
+
+\f
+/* ======================================================================
+ * U-Boot's puts function does not append a newline, so the bedbug stuff
+ * will use this for the output of the dis/assembler.
+ * ====================================================================== */
+
+int bedbug_puts(const char *str)
+{
+ /* -------------------------------------------------- */
+
+ printf( "%s\r\n", str );
+ return 0;
+} /* bedbug_puts */
+
+
+\f
+/* ======================================================================
+ * Initialize the bug_ctx structure used by the bedbug debugger. This is
+ * specific to the CPU since each has different debug registers and
+ * settings.
+ * ====================================================================== */
+
+void bedbug_init( void )
+{
+ /* -------------------------------------------------- */
+
+#if defined(CONFIG_4xx)
+ void bedbug405_init( void );
+ bedbug405_init();
+#elif defined(CONFIG_MPC860)
+ void bedbug860_init( void );
+ bedbug860_init();
+#endif
+
+#if defined(CONFIG_MPC824X) || defined(CONFIG_MPC8260)
+ /* Processors that are 603e core based */
+ void bedbug603e_init( void );
+
+ bedbug603e_init();
+#endif
+
+ return;
+} /* bedbug_init */
+
+
+\f
+/* ======================================================================
+ * Entry point from the interpreter to the disassembler. Repeated calls
+ * will resume from the last disassembled address.
+ * ====================================================================== */
+int do_bedbug_dis (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong addr; /* Address to start disassembly from */
+ ulong len; /* # of instructions to disassemble */
+ /* -------------------------------------------------- */
+
+ /* Setup to go from the last address if none is given */
+ addr = dis_last_addr;
+ len = dis_last_len;
+
+ if (argc < 2)
+ {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ if(( flag & CMD_FLAG_REPEAT ) == 0 )
+ {
+ /* New command */
+ addr = simple_strtoul( argv[1], NULL, 16 );
+
+ /* If an extra param is given then it is the length */
+ if( argc > 2 )
+ len = simple_strtoul( argv[2], NULL, 16 );
+ }
+
+ /* Run the disassembler */
+ disppc( (unsigned char *)addr, 0, len, bedbug_puts, F_RADHEX );
+
+ dis_last_addr = addr + (len * 4);
+ dis_last_len = len;
+ return 0;
+} /* do_bedbug_dis */
+
+
+\f
+/* ======================================================================
+ * Entry point from the interpreter to the assembler. Assembles
+ * instructions in consecutive memory locations until a '.' (period) is
+ * entered on a line by itself.
+ * ====================================================================== */
+int do_bedbug_asm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ long mem_addr; /* Address to assemble into */
+ unsigned long instr; /* Machine code for text */
+ char prompt[ 15 ]; /* Prompt string for user input */
+ int asm_err; /* Error code from the assembler*/
+ /* -------------------------------------------------- */
+ int rcode = 0;
+
+ if (argc < 2)
+ {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ printf( "\nEnter '.' when done\n" );
+ mem_addr = simple_strtoul( argv[ 1 ], NULL, 16 );
+
+ while( 1 )
+ {
+ putc( '\n' );
+ disppc( (unsigned char *)mem_addr, 0, 1, bedbug_puts, F_RADHEX );
+
+ sprintf( prompt, "%08lx: ", mem_addr );
+ readline( prompt );
+
+ if( console_buffer[ 0 ] && strcmp( console_buffer, "." ))
+ {
+ if(( instr = asmppc( mem_addr, console_buffer, &asm_err )) != 0 )
+ {
+ *(unsigned long *)mem_addr = instr;
+ mem_addr += 4;
+ }
+ else
+ {
+ printf( "*** Error: %s ***\n", asm_error_str( asm_err ));
+ rcode = 1;
+ }
+ }
+ else
+ {
+ break;
+ }
+ }
+ return rcode;
+} /* do_bedbug_asm */
+
+
+\f
+/* ======================================================================
+ * Used to set a break point from the interpreter. Simply calls into the
+ * CPU-specific break point set routine.
+ * ====================================================================== */
+
+int do_bedbug_break (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ /* -------------------------------------------------- */
+ if( bug_ctx.do_break )
+ (*bug_ctx.do_break)( cmdtp, flag, argc, argv );
+ return 0;
+
+} /* do_bedbug_break */
+
+
+\f
+/* ======================================================================
+ * Called from the debug interrupt routine. Simply calls the CPU-specific
+ * breakpoint handling routine.
+ * ====================================================================== */
+
+void do_bedbug_breakpoint (struct pt_regs *regs)
+{
+ /* -------------------------------------------------- */
+
+ if( bug_ctx.break_isr )
+ (*bug_ctx.break_isr)( regs );
+
+ return;
+} /* do_bedbug_breakpoint */
+
+
+\f
+/* ======================================================================
+ * Called from the CPU-specific breakpoint handling routine. Enter a
+ * mini main loop until the stopped flag is cleared from the breakpoint
+ * context.
+ *
+ * This handles the parts of the debugger that are common to all CPU's.
+ * ====================================================================== */
+
+void bedbug_main_loop( unsigned long addr, struct pt_regs *regs )
+{
+ int len; /* Length of command line */
+ int flag; /* Command flags */
+ int rc = 0; /* Result from run_command*/
+ char prompt_str[ 20 ]; /* Prompt string */
+ static char lastcommand[ CFG_CBSIZE ] = {0}; /* previous command */
+ /* -------------------------------------------------- */
+
+ if( bug_ctx.clear )
+ (*bug_ctx.clear)( bug_ctx.current_bp );
+
+ printf( "Breakpoint %d: ", bug_ctx.current_bp );
+ disppc( (unsigned char *)addr, 0, 1, bedbug_puts, F_RADHEX );
+
+ bug_ctx.stopped = 1;
+ bug_ctx.regs = regs;
+
+ sprintf( prompt_str, "BEDBUG.%d =>", bug_ctx.current_bp );
+
+ /* A miniature main loop */
+ while( bug_ctx.stopped )
+ {
+ len = readline( prompt_str );
+
+ flag = 0; /* assume no special flags for now */
+
+ if (len > 0)
+ strcpy( lastcommand, console_buffer );
+ else if( len == 0 )
+ flag |= CMD_FLAG_REPEAT;
+
+ if (len == -1)
+ printf ("<INTERRUPT>\n");
+ else
+ rc = run_command( lastcommand, flag );
+
+ if (rc <= 0) {
+ /* invalid command or not repeatable, forget it */
+ lastcommand[0] = 0;
+ }
+ }
+
+ bug_ctx.regs = NULL;
+ bug_ctx.current_bp = 0;
+
+ return;
+} /* bedbug_main_loop */
+
+
+\f
+/* ======================================================================
+ * Interpreter command to continue from a breakpoint. Just clears the
+ * stopped flag in the context so that the breakpoint routine will
+ * return.
+ * ====================================================================== */
+int do_bedbug_continue (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+
+{
+ /* -------------------------------------------------- */
+
+ if( ! bug_ctx.stopped )
+ {
+ printf( "Not at a breakpoint\n" );
+ return 1;
+ }
+
+ bug_ctx.stopped = 0;
+ return 0;
+} /* do_bedbug_continue */
+
+
+\f
+/* ======================================================================
+ * Interpreter command to continue to the next instruction, stepping into
+ * subroutines. Works by calling the find_next_addr() routine to compute
+ * the address passes control to the CPU-specific set breakpoint routine
+ * for the current breakpoint number.
+ * ====================================================================== */
+int do_bedbug_step (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ unsigned long addr; /* Address to stop at */
+ /* -------------------------------------------------- */
+
+ if( ! bug_ctx.stopped )
+ {
+ printf( "Not at a breakpoint\n" );
+ return 1;
+ }
+
+ if( !find_next_address( (unsigned char *)&addr, FALSE, bug_ctx.regs ))
+ return 1;
+
+ if( bug_ctx.set )
+ (*bug_ctx.set)( bug_ctx.current_bp, addr );
+
+ bug_ctx.stopped = 0;
+ return 0;
+} /* do_bedbug_step */
+
+
+\f
+/* ======================================================================
+ * Interpreter command to continue to the next instruction, stepping over
+ * subroutines. Works by calling the find_next_addr() routine to compute
+ * the address passes control to the CPU-specific set breakpoint routine
+ * for the current breakpoint number.
+ * ====================================================================== */
+int do_bedbug_next (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ unsigned long addr; /* Address to stop at */
+ /* -------------------------------------------------- */
+
+ if( ! bug_ctx.stopped )
+ {
+ printf( "Not at a breakpoint\n" );
+ return 1;
+ }
+
+ if( !find_next_address( (unsigned char *)&addr, TRUE, bug_ctx.regs ))
+ return 1;
+
+ if( bug_ctx.set )
+ (*bug_ctx.set)( bug_ctx.current_bp, addr );
+
+ bug_ctx.stopped = 0;
+ return 0;
+} /* do_bedbug_next */
+
+
+\f
+/* ======================================================================
+ * Interpreter command to print the current stack. This assumes an EABI
+ * architecture, so it starts with GPR R1 and works back up the stack.
+ * ====================================================================== */
+int do_bedbug_stack (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ unsigned long sp; /* Stack pointer */
+ unsigned long func; /* LR from stack */
+ int depth; /* Stack iteration level */
+ int skip = 1; /* Flag to skip the first entry */
+ unsigned long top; /* Top of memory address */
+ /* -------------------------------------------------- */
+
+ if( ! bug_ctx.stopped )
+ {
+ printf( "Not at a breakpoint\n" );
+ return 1;
+ }
+
+ top = gd->bd->bi_memstart + gd->bd->bi_memsize;
+ depth = 0;
+
+ printf( "Depth PC\n" );
+ printf( "----- --------\n" );
+ printf( "%5d %08lx\n", depth++, bug_ctx.regs->nip );
+
+ sp = bug_ctx.regs->gpr[ 1 ];
+ func = *(unsigned long *)(sp+4);
+
+ while(( func < top ) && ( sp < top ))
+ {
+ if( !skip )
+ printf( "%5d %08lx\n", depth++, func );
+ else
+ --skip;
+
+ sp = *(unsigned long *)sp;
+ func = *(unsigned long *)(sp+4);
+ }
+ return 0;
+} /* do_bedbug_stack */
+
+
+\f
+/* ======================================================================
+ * Interpreter command to dump the registers. Calls the CPU-specific
+ * show registers routine.
+ * ====================================================================== */
+int do_bedbug_rdump (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ /* -------------------------------------------------- */
+
+ if( ! bug_ctx.stopped )
+ {
+ printf( "Not at a breakpoint\n" );
+ return 1;
+ }
+
+ show_regs( bug_ctx.regs );
+ return 0;
+} /* do_bedbug_rdump */
+
+
+/* ====================================================================== */
+#endif /* CFG_CMD_BEDBUG */
+
+
+/*
+ * Copyright (c) 2001 William L. Pitts
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are freely
+ * permitted provided that the above copyright notice and this
+ * paragraph and the following disclaimer are duplicated in all
+ * such forms.
+ *
+ * This software is provided "AS IS" and without any express or
+ * implied warranties, including, without limitation, the implied
+ * warranties of merchantability and fitness for a particular
+ * purpose.
+ */
--- /dev/null
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Boot support
+ */
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <cmd_boot.h>
+#include <image.h>
+#include <malloc.h>
+#include <zlib.h>
+#include <asm/byteorder.h>
+#if (CONFIG_COMMANDS & CFG_CMD_DATE) || defined(CONFIG_TIMESTAMP)
+#include <rtc.h>
+#endif
+
+#ifdef CFG_HUSH_PARSER
+#include <hush.h>
+#endif
+
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+# include <status_led.h>
+# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
+#else
+# define SHOW_BOOT_PROGRESS(arg)
+#endif
+
+#ifdef CFG_INIT_RAM_LOCK
+#include <asm/cache.h>
+#endif
+
+/*
+ * Some systems (for example LWMON) have very short watchdog periods;
+ * we must make sure to split long operations like memmove() or
+ * crc32() into reasonable chunks.
+ */
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+# define CHUNKSZ (64 * 1024)
+#endif
+
+int gunzip (void *, int, unsigned char *, int *);
+
+static void *zalloc(void *, unsigned, unsigned);
+static void zfree(void *, void *, unsigned);
+
+#if (CONFIG_COMMANDS & CFG_CMD_IMI)
+static int image_info (unsigned long addr);
+#endif
+static void print_type (image_header_t *hdr);
+
+/*
+ * Continue booting an OS image; caller already has:
+ * - copied image header to global variable `header'
+ * - checked header magic number, checksums (both header & image),
+ * - verified image architecture (PPC) and type (KERNEL or MULTI),
+ * - loaded (first part of) image to header load address,
+ * - disabled interrupts.
+ */
+typedef void boot_os_Fcn (cmd_tbl_t *cmdtp, int flag,
+ int argc, char *argv[],
+ ulong addr, /* of image to boot */
+ ulong *len_ptr, /* multi-file image length table */
+ int verify); /* getenv("verify")[0] != 'n' */
+
+#ifndef CONFIG_ARM
+static boot_os_Fcn do_bootm_linux;
+#else
+extern boot_os_Fcn do_bootm_linux;
+#endif
+static boot_os_Fcn do_bootm_netbsd;
+#if (CONFIG_COMMANDS & CFG_CMD_ELF)
+static boot_os_Fcn do_bootm_vxworks;
+static boot_os_Fcn do_bootm_qnxelf;
+int do_bootvx ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] );
+int do_bootelf (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] );
+#endif /* CFG_CMD_ELF */
+
+image_header_t header;
+
+ulong load_addr = CFG_LOAD_ADDR; /* Default Load Address */
+
+int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong iflag;
+ ulong addr;
+ ulong data, len, checksum;
+ ulong *len_ptr;
+ int i, verify;
+ char *name, *s;
+ int (*appl)(cmd_tbl_t *, int, int, char *[]);
+ image_header_t *hdr = &header;
+
+ s = getenv ("verify");
+ verify = (s && (*s == 'n')) ? 0 : 1;
+
+ if (argc < 2) {
+ addr = load_addr;
+ } else {
+ addr = simple_strtoul(argv[1], NULL, 16);
+ }
+
+ SHOW_BOOT_PROGRESS (1);
+ printf ("## Booting image at %08lx ...\n", addr);
+
+ /* Copy header so we can blank CRC field for re-calculation */
+ memmove (&header, (char *)addr, sizeof(image_header_t));
+
+ if (ntohl(hdr->ih_magic) != IH_MAGIC) {
+ printf ("Bad Magic Number\n");
+ SHOW_BOOT_PROGRESS (-1);
+ return 1;
+ }
+ SHOW_BOOT_PROGRESS (2);
+
+ data = (ulong)&header;
+ len = sizeof(image_header_t);
+
+ checksum = ntohl(hdr->ih_hcrc);
+ hdr->ih_hcrc = 0;
+
+ if (crc32 (0, (char *)data, len) != checksum) {
+ printf ("Bad Header Checksum\n");
+ SHOW_BOOT_PROGRESS (-2);
+ return 1;
+ }
+ SHOW_BOOT_PROGRESS (3);
+
+ /* for multi-file images we need the data part, too */
+ print_image_hdr ((image_header_t *)addr);
+
+ data = addr + sizeof(image_header_t);
+ len = ntohl(hdr->ih_size);
+
+ if (verify) {
+ printf (" Verifying Checksum ... ");
+ if (crc32 (0, (char *)data, len) != ntohl(hdr->ih_dcrc)) {
+ printf ("Bad Data CRC\n");
+ SHOW_BOOT_PROGRESS (-3);
+ return 1;
+ }
+ printf ("OK\n");
+ }
+ SHOW_BOOT_PROGRESS (4);
+
+ len_ptr = (ulong *)data;
+
+ if (hdr->ih_arch != IH_CPU_PPC && hdr->ih_arch != IH_CPU_ARM) {
+ printf ("Unsupported Architecture\n");
+ SHOW_BOOT_PROGRESS (-4);
+ return 1;
+ }
+ SHOW_BOOT_PROGRESS (5);
+
+ switch (hdr->ih_type) {
+ case IH_TYPE_STANDALONE: name = "Standalone Application";
+ break;
+ case IH_TYPE_KERNEL: name = "Kernel Image";
+ break;
+ case IH_TYPE_MULTI: name = "Multi-File Image";
+ len = ntohl(len_ptr[0]);
+ /* OS kernel is always the first image */
+ data += 8; /* kernel_len + terminator */
+ for (i=1; len_ptr[i]; ++i)
+ data += 4;
+ break;
+ default: printf ("Wrong Image Type for %s command\n", cmdtp->name);
+ SHOW_BOOT_PROGRESS (-5);
+ return 1;
+ }
+ SHOW_BOOT_PROGRESS (6);
+
+ /*
+ * We have reached the point of no return: we are going to
+ * overwrite all exception vector code, so we cannot easily
+ * recover from any failures any more...
+ */
+
+ iflag = disable_interrupts();
+
+ switch (hdr->ih_comp) {
+ case IH_COMP_NONE:
+ if(hdr->ih_load == addr) {
+ printf (" XIP %s ... ", name);
+ } else {
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+ size_t l = len;
+ void *to = (void *)ntohl(hdr->ih_load);
+ void *from = (void *)data;
+
+ printf (" Loading %s ... ", name);
+
+ while (l > 0) {
+ size_t tail = (l > CHUNKSZ) ? CHUNKSZ : l;
+ WATCHDOG_RESET();
+ memmove (to, from, tail);
+ to += tail;
+ from += tail;
+ l -= tail;
+ }
+#else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
+ memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
+#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
+ }
+ break;
+ case IH_COMP_GZIP:
+ printf (" Uncompressing %s ... ", name);
+ if (gunzip ((void *)ntohl(hdr->ih_load), 0x400000,
+ (uchar *)data, (int *)&len) != 0) {
+ printf ("GUNZIP ERROR - must RESET board to recover\n");
+ SHOW_BOOT_PROGRESS (-6);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+ break;
+ default:
+ if (iflag)
+ enable_interrupts();
+ printf ("Unimplemented compression type %d\n", hdr->ih_comp);
+ SHOW_BOOT_PROGRESS (-7);
+ return 1;
+ }
+ printf ("OK\n");
+ SHOW_BOOT_PROGRESS (7);
+
+ switch (hdr->ih_type) {
+ case IH_TYPE_STANDALONE:
+ appl = (int (*)(cmd_tbl_t *, int, int, char *[]))ntohl(hdr->ih_ep);
+ if (iflag)
+ enable_interrupts();
+
+ (*appl)(cmdtp, flag, argc-1, &argv[1]);
+ break;
+ case IH_TYPE_KERNEL:
+ case IH_TYPE_MULTI:
+ /* handled below */
+ break;
+ default:
+ if (iflag)
+ enable_interrupts();
+ printf ("Can't boot image type %d\n", hdr->ih_type);
+ SHOW_BOOT_PROGRESS (-8);
+ return 1;
+ }
+ SHOW_BOOT_PROGRESS (8);
+
+ switch (hdr->ih_os) {
+ default: /* handled by (original) Linux case */
+ case IH_OS_LINUX:
+ do_bootm_linux (cmdtp, flag, argc, argv,
+ addr, len_ptr, verify);
+ break;
+ case IH_OS_NETBSD:
+ do_bootm_netbsd (cmdtp, flag, argc, argv,
+ addr, len_ptr, verify);
+ break;
+#if (CONFIG_COMMANDS & CFG_CMD_ELF)
+ case IH_OS_VXWORKS:
+ do_bootm_vxworks (cmdtp, flag, argc, argv,
+ addr, len_ptr, verify);
+ break;
+ case IH_OS_QNX:
+ do_bootm_qnxelf (cmdtp, flag, argc, argv,
+ addr, len_ptr, verify);
+ break;
+#endif /* CFG_CMD_ELF */
+ }
+
+ SHOW_BOOT_PROGRESS (-9);
+#ifdef DEBUG
+ printf ("\n## Control returned to monitor - resetting...\n");
+ do_reset (cmdtp, flag, argc, argv);
+#endif
+ return 1;
+}
+
+#ifndef CONFIG_ARM
+static void
+do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
+ int argc, char *argv[],
+ ulong addr,
+ ulong *len_ptr,
+ int verify)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ ulong sp;
+ ulong len, checksum;
+ ulong initrd_start, initrd_end;
+ ulong cmd_start, cmd_end;
+ ulong initrd_high;
+ ulong data;
+ char *cmdline;
+ char *s;
+ bd_t *kbd;
+ void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
+ image_header_t *hdr = &header;
+
+ if ((s = getenv ("initrd_high")) != NULL) {
+ /* a value of "no" or a similar string will act like 0,
+ * turning the "load high" feature off. This is intentional.
+ */
+ initrd_high = simple_strtoul(s, NULL, 16);
+ } else { /* not set, no restrictions to load high */
+ initrd_high = ~0;
+ }
+
+ /*
+ * Booting a (Linux) kernel image
+ *
+ * Allocate space for command line and board info - the
+ * address should be as high as possible within the reach of
+ * the kernel (see CFG_BOOTMAPSZ settings), but in unused
+ * memory, which means far enough below the current stack
+ * pointer.
+ */
+
+ asm( "mr %0,1": "=r"(sp) : );
+
+#ifdef DEBUG
+ printf ("## Current stack ends at 0x%08lX ", sp);
+#endif
+ sp -= 2048; /* just to be sure */
+ if (sp > CFG_BOOTMAPSZ)
+ sp = CFG_BOOTMAPSZ;
+ sp &= ~0xF;
+
+#ifdef DEBUG
+ printf ("=> set upper limit to 0x%08lX\n", sp);
+#endif
+ cmdline = (char *)((sp - CFG_BARGSIZE) & ~0xF);
+ kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF);
+
+ if ((s = getenv("bootargs")) == NULL)
+ s = "";
+
+ strcpy (cmdline, s);
+
+ cmd_start = (ulong)&cmdline[0];
+ cmd_end = cmd_start + strlen(cmdline);
+
+ *kbd = *(gd->bd);
+
+#ifdef DEBUG
+ printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);
+
+ do_bdinfo (NULL, 0, 0, NULL);
+#endif
+
+ if ((s = getenv ("clocks_in_mhz")) != NULL) {
+ /* convert all clock information to MHz */
+ kbd->bi_intfreq /= 1000000L;
+ kbd->bi_busfreq /= 1000000L;
+#if defined(CONFIG_8260)
+ kbd->bi_cpmfreq /= 1000000L;
+ kbd->bi_brgfreq /= 1000000L;
+ kbd->bi_sccfreq /= 1000000L;
+ kbd->bi_vco /= 1000000L;
+#endif /* CONFIG_8260 */
+ }
+
+ kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))hdr->ih_ep;
+
+ /*
+ * Check if there is an initrd image
+ */
+ if (argc >= 3) {
+ SHOW_BOOT_PROGRESS (9);
+
+ addr = simple_strtoul(argv[2], NULL, 16);
+
+ printf ("## Loading RAMDisk Image at %08lx ...\n", addr);
+
+ /* Copy header so we can blank CRC field for re-calculation */
+ memmove (&header, (char *)addr, sizeof(image_header_t));
+
+ if (hdr->ih_magic != IH_MAGIC) {
+ printf ("Bad Magic Number\n");
+ SHOW_BOOT_PROGRESS (-10);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ data = (ulong)&header;
+ len = sizeof(image_header_t);
+
+ checksum = hdr->ih_hcrc;
+ hdr->ih_hcrc = 0;
+
+ if (crc32 (0, (char *)data, len) != checksum) {
+ printf ("Bad Header Checksum\n");
+ SHOW_BOOT_PROGRESS (-11);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ SHOW_BOOT_PROGRESS (10);
+
+ print_image_hdr (hdr);
+
+ data = addr + sizeof(image_header_t);
+ len = hdr->ih_size;
+
+ if (verify) {
+ ulong csum = 0;
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+ ulong cdata = data, edata = cdata + len;
+#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
+
+ printf (" Verifying Checksum ... ");
+
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+
+ while (cdata < edata) {
+ ulong chunk = edata - cdata;
+
+ if (chunk > CHUNKSZ)
+ chunk = CHUNKSZ;
+ csum = crc32 (csum, (char *)cdata, chunk);
+ cdata += chunk;
+
+ WATCHDOG_RESET();
+ }
+#else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
+ csum = crc32 (0, (char *)data, len);
+#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
+
+ if (csum != hdr->ih_dcrc) {
+ printf ("Bad Data CRC\n");
+ SHOW_BOOT_PROGRESS (-12);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+ printf ("OK\n");
+ }
+
+ SHOW_BOOT_PROGRESS (11);
+
+ if ((hdr->ih_os != IH_OS_LINUX) ||
+ (hdr->ih_arch != IH_CPU_PPC) ||
+ (hdr->ih_type != IH_TYPE_RAMDISK) ) {
+ printf ("No Linux PPC Ramdisk Image\n");
+ SHOW_BOOT_PROGRESS (-13);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ /*
+ * Now check if we have a multifile image
+ */
+ } else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1])) {
+ u_long tail = ntohl(len_ptr[0]) % 4;
+ int i;
+
+ SHOW_BOOT_PROGRESS (13);
+
+ /* skip kernel length and terminator */
+ data = (ulong)(&len_ptr[2]);
+ /* skip any additional image length fields */
+ for (i=1; len_ptr[i]; ++i)
+ data += 4;
+ /* add kernel length, and align */
+ data += ntohl(len_ptr[0]);
+ if (tail) {
+ data += 4 - tail;
+ }
+
+ len = ntohl(len_ptr[1]);
+
+ } else {
+ /*
+ * no initrd image
+ */
+ SHOW_BOOT_PROGRESS (14);
+
+ len = data = 0;
+ }
+
+#ifdef DEBUG
+ if (!data) {
+ printf ("No initrd\n");
+ }
+#endif
+
+ if (data) {
+ initrd_start = (ulong)kbd - len;
+ initrd_start &= ~(4096 - 1); /* align on page */
+
+ if (initrd_high) {
+ ulong nsp;
+
+ /*
+ * the inital ramdisk does not need to be within
+ * CFG_BOOTMAPSZ as it is not accessed until after
+ * the mm system is initialised.
+ *
+ * do the stack bottom calculation again and see if
+ * the initrd will fit just below the monitor stack
+ * bottom without overwriting the area allocated
+ * above for command line args and board info.
+ */
+ asm( "mr %0,1": "=r"(nsp) : );
+ nsp -= 2048; /* just to be sure */
+ nsp &= ~0xF;
+ if (nsp > initrd_high) /* limit as specified */
+ nsp = initrd_high;
+ nsp -= len;
+ nsp &= ~(4096 - 1); /* align on page */
+ if (nsp >= sp)
+ initrd_start = nsp;
+ }
+
+ SHOW_BOOT_PROGRESS (12);
+#ifdef DEBUG
+ printf ("## initrd at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
+ data, data + len - 1, len, len);
+#endif
+ initrd_end = initrd_start + len;
+ printf (" Loading Ramdisk to %08lx, end %08lx ... ",
+ initrd_start, initrd_end);
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+ {
+ size_t l = len;
+ void *to = (void *)initrd_start;
+ void *from = (void *)data;
+
+ while (l > 0) {
+ size_t tail = (l > CHUNKSZ) ? CHUNKSZ : l;
+ WATCHDOG_RESET();
+ memmove (to, from, tail);
+ to += tail;
+ from += tail;
+ l -= tail;
+ }
+ }
+#else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
+ memmove ((void *)initrd_start, (void *)data, len);
+#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
+ printf ("OK\n");
+ } else {
+ initrd_start = 0;
+ initrd_end = 0;
+ }
+
+#ifdef DEBUG
+ printf ("## Transferring control to Linux (at address %08lx) ...\n",
+ (ulong)kernel);
+#endif
+ SHOW_BOOT_PROGRESS (15);
+
+#ifdef CFG_INIT_RAM_LOCK
+ unlock_ram_in_cache();
+#endif
+ /*
+ * Linux Kernel Parameters:
+ * r3: ptr to board info data
+ * r4: initrd_start or 0 if no initrd
+ * r5: initrd_end - unused if r4 is 0
+ * r6: Start of command line string
+ * r7: End of command line string
+ */
+ (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
+}
+#endif /* CONFIG_ARM */
+
+static void
+do_bootm_netbsd (cmd_tbl_t *cmdtp, int flag,
+ int argc, char *argv[],
+ ulong addr,
+ ulong *len_ptr,
+ int verify)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ image_header_t *hdr = &header;
+
+ void (*loader)(bd_t *, image_header_t *, char *, char *);
+ image_header_t *img_addr;
+ char *consdev;
+ char *cmdline;
+
+
+ /*
+ * Booting a (NetBSD) kernel image
+ *
+ * This process is pretty similar to a standalone application:
+ * The (first part of an multi-) image must be a stage-2 loader,
+ * which in turn is responsible for loading & invoking the actual
+ * kernel. The only differences are the parameters being passed:
+ * besides the board info strucure, the loader expects a command
+ * line, the name of the console device, and (optionally) the
+ * address of the original image header.
+ */
+
+ img_addr = 0;
+ if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1]))
+ img_addr = (image_header_t *) addr;
+
+
+ consdev = "";
+#if defined (CONFIG_8xx_CONS_SMC1)
+ consdev = "smc1";
+#elif defined (CONFIG_8xx_CONS_SMC2)
+ consdev = "smc2";
+#elif defined (CONFIG_8xx_CONS_SCC2)
+ consdev = "scc2";
+#elif defined (CONFIG_8xx_CONS_SCC3)
+ consdev = "scc3";
+#endif
+
+ if (argc > 2) {
+ ulong len;
+ int i;
+
+ for (i=2, len=0 ; i<argc ; i+=1)
+ len += strlen (argv[i]) + 1;
+ cmdline = malloc (len);
+
+ for (i=2, len=0 ; i<argc ; i+=1) {
+ if (i > 2)
+ cmdline[len++] = ' ';
+ strcpy (&cmdline[len], argv[i]);
+ len += strlen (argv[i]);
+ }
+ } else if ((cmdline = getenv("bootargs")) == NULL) {
+ cmdline = "";
+ }
+
+ loader = (void (*)(bd_t *, image_header_t *, char *, char *)) hdr->ih_ep;
+
+ printf ("## Transferring control to NetBSD stage-2 loader (at address %08lx) ...\n",
+ (ulong)loader);
+
+ SHOW_BOOT_PROGRESS (15);
+
+ /*
+ * NetBSD Stage-2 Loader Parameters:
+ * r3: ptr to board info data
+ * r4: image address
+ * r5: console device
+ * r6: boot args string
+ */
+ (*loader) (gd->bd, img_addr, consdev, cmdline);
+}
+
+#if (CONFIG_COMMANDS & CFG_CMD_BOOTD)
+int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int rcode = 0;
+#ifndef CFG_HUSH_PARSER
+ if (run_command (getenv ("bootcmd"), flag) < 0) rcode = 1;
+#else
+ if (parse_string_outer(getenv("bootcmd"),
+ FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0 ) rcode = 1;
+#endif
+ return rcode;
+}
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_IMI)
+int do_iminfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int arg;
+ ulong addr;
+ int rcode=0;
+
+ if (argc < 2) {
+ return image_info (load_addr);
+ }
+
+ for (arg=1; arg <argc; ++arg) {
+ addr = simple_strtoul(argv[arg], NULL, 16);
+ if (image_info (addr) != 0) rcode = 1;
+ }
+ return rcode;
+}
+
+static int image_info (ulong addr)
+{
+ ulong data, len, checksum;
+ image_header_t *hdr = &header;
+
+ printf ("\n## Checking Image at %08lx ...\n", addr);
+
+ /* Copy header so we can blank CRC field for re-calculation */
+ memmove (&header, (char *)addr, sizeof(image_header_t));
+
+ if (ntohl(hdr->ih_magic) != IH_MAGIC) {
+ printf (" Bad Magic Number\n");
+ return 1;
+ }
+
+ data = (ulong)&header;
+ len = sizeof(image_header_t);
+
+ checksum = ntohl(hdr->ih_hcrc);
+ hdr->ih_hcrc = 0;
+
+ if (crc32 (0, (char *)data, len) != checksum) {
+ printf (" Bad Header Checksum\n");
+ return 1;
+ }
+
+ /* for multi-file images we need the data part, too */
+ print_image_hdr ((image_header_t *)addr);
+
+ data = addr + sizeof(image_header_t);
+ len = ntohl(hdr->ih_size);
+
+ printf (" Verifying Checksum ... ");
+ if (crc32 (0, (char *)data, len) != ntohl(hdr->ih_dcrc)) {
+ printf (" Bad Data CRC\n");
+ return 1;
+ }
+ printf ("OK\n");
+ return 0;
+}
+#endif /* CFG_CMD_IMI */
+
+void
+print_image_hdr (image_header_t *hdr)
+{
+#if (CONFIG_COMMANDS & CFG_CMD_DATE) || defined(CONFIG_TIMESTAMP)
+ time_t timestamp = (time_t)ntohl(hdr->ih_time);
+ struct rtc_time tm;
+#endif
+
+ printf (" Image Name: %.*s\n", IH_NMLEN, hdr->ih_name);
+#if (CONFIG_COMMANDS & CFG_CMD_DATE) || defined(CONFIG_TIMESTAMP)
+ to_tm (timestamp, &tm);
+ printf (" Created: %4d-%02d-%02d %2d:%02d:%02d UTC\n",
+ tm.tm_year, tm.tm_mon, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec);
+#endif /* CFG_CMD_DATE, CONFIG_TIMESTAMP */
+ printf (" Image Type: "); print_type(hdr); printf ("\n");
+ printf (" Data Size: %d Bytes = ", ntohl(hdr->ih_size));
+ print_size (ntohl(hdr->ih_size), "\n");
+ printf (" Load Address: %08x\n", ntohl(hdr->ih_load));
+ printf (" Entry Point: %08x\n", ntohl(hdr->ih_ep));
+
+ if (hdr->ih_type == IH_TYPE_MULTI) {
+ int i;
+ ulong len;
+ ulong *len_ptr = (ulong *)((ulong)hdr + sizeof(image_header_t));
+
+ printf (" Contents:\n");
+ for (i=0; (len = ntohl(*len_ptr)); ++i, ++len_ptr) {
+ printf (" Image %d: %8ld Bytes = ", i, len);
+ print_size (len, "\n");
+ }
+ }
+}
+
+
+static void
+print_type (image_header_t *hdr)
+{
+ char *os, *arch, *type, *comp;
+
+ switch (hdr->ih_os) {
+ case IH_OS_INVALID: os = "Invalid OS"; break;
+ case IH_OS_NETBSD: os = "NetBSD"; break;
+ case IH_OS_LINUX: os = "Linux"; break;
+ case IH_OS_VXWORKS: os = "VxWorks"; break;
+ case IH_OS_QNX: os = "QNX"; break;
+ case IH_OS_U_BOOT: os = "U-Boot"; break;
+ default: os = "Unknown OS"; break;
+ }
+
+ switch (hdr->ih_arch) {
+ case IH_CPU_INVALID: arch = "Invalid CPU"; break;
+ case IH_CPU_ALPHA: arch = "Alpha"; break;
+ case IH_CPU_ARM: arch = "ARM"; break;
+ case IH_CPU_I386: arch = "Intel x86"; break;
+ case IH_CPU_IA64: arch = "IA64"; break;
+ case IH_CPU_MIPS: arch = "MIPS"; break;
+ case IH_CPU_MIPS64: arch = "MIPS 64 Bit"; break;
+ case IH_CPU_PPC: arch = "PowerPC"; break;
+ case IH_CPU_S390: arch = "IBM S390"; break;
+ case IH_CPU_SH: arch = "SuperH"; break;
+ case IH_CPU_SPARC: arch = "SPARC"; break;
+ case IH_CPU_SPARC64: arch = "SPARC 64 Bit"; break;
+ default: arch = "Unknown Architecture"; break;
+ }
+
+ switch (hdr->ih_type) {
+ case IH_TYPE_INVALID: type = "Invalid Image"; break;
+ case IH_TYPE_STANDALONE:type = "Standalone Program"; break;
+ case IH_TYPE_KERNEL: type = "Kernel Image"; break;
+ case IH_TYPE_RAMDISK: type = "RAMDisk Image"; break;
+ case IH_TYPE_MULTI: type = "Multi-File Image"; break;
+ case IH_TYPE_FIRMWARE: type = "Firmware"; break;
+ case IH_TYPE_SCRIPT: type = "Script"; break;
+ default: type = "Unknown Image"; break;
+ }
+
+ switch (hdr->ih_comp) {
+ case IH_COMP_NONE: comp = "uncompressed"; break;
+ case IH_COMP_GZIP: comp = "gzip compressed"; break;
+ case IH_COMP_BZIP2: comp = "bzip2 compressed"; break;
+ default: comp = "unknown compression"; break;
+ }
+
+ printf ("%s %s %s (%s)", arch, os, type, comp);
+}
+
+#define ZALLOC_ALIGNMENT 16
+
+static void *zalloc(void *x, unsigned items, unsigned size)
+{
+ void *p;
+
+ size *= items;
+ size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
+
+ p = malloc (size);
+
+ return (p);
+}
+
+static void zfree(void *x, void *addr, unsigned nb)
+{
+ free (addr);
+}
+
+#define HEAD_CRC 2
+#define EXTRA_FIELD 4
+#define ORIG_NAME 8
+#define COMMENT 0x10
+#define RESERVED 0xe0
+
+#define DEFLATED 8
+
+int gunzip(void *dst, int dstlen, unsigned char *src, int *lenp)
+{
+ z_stream s;
+ int r, i, flags;
+
+ /* skip header */
+ i = 10;
+ flags = src[3];
+ if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
+ printf ("Error: Bad gzipped data\n");
+ return (-1);
+ }
+ if ((flags & EXTRA_FIELD) != 0)
+ i = 12 + src[10] + (src[11] << 8);
+ if ((flags & ORIG_NAME) != 0)
+ while (src[i++] != 0)
+ ;
+ if ((flags & COMMENT) != 0)
+ while (src[i++] != 0)
+ ;
+ if ((flags & HEAD_CRC) != 0)
+ i += 2;
+ if (i >= *lenp) {
+ printf ("Error: gunzip out of data in header\n");
+ return (-1);
+ }
+
+ s.zalloc = zalloc;
+ s.zfree = zfree;
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+ s.outcb = (cb_func)WATCHDOG_RESET;
+#else
+ s.outcb = Z_NULL;
+#endif /* CONFIG_HW_WATCHDOG */
+
+ r = inflateInit2(&s, -MAX_WBITS);
+ if (r != Z_OK) {
+ printf ("Error: inflateInit2() returned %d\n", r);
+ return (-1);
+ }
+ s.next_in = src + i;
+ s.avail_in = *lenp - i;
+ s.next_out = dst;
+ s.avail_out = dstlen;
+ r = inflate(&s, Z_FINISH);
+ if (r != Z_OK && r != Z_STREAM_END) {
+ printf ("Error: inflate() returned %d\n", r);
+ return (-1);
+ }
+ *lenp = s.next_out - (unsigned char *) dst;
+ inflateEnd(&s);
+
+ return (0);
+}
+
+#if (CONFIG_COMMANDS & CFG_CMD_ELF)
+static void
+do_bootm_vxworks (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
+ ulong addr, ulong *len_ptr, int verify)
+{
+ image_header_t *hdr = &header;
+ char str[80];
+
+ sprintf(str, "%x", hdr->ih_ep); /* write entry-point into string */
+ setenv("loadaddr", str);
+ do_bootvx(cmdtp, 0, 0, NULL);
+}
+
+static void
+do_bootm_qnxelf (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
+ ulong addr, ulong *len_ptr, int verify)
+{
+ image_header_t *hdr = &header;
+ char *local_args[2];
+ char str[16];
+
+ sprintf(str, "%x", hdr->ih_ep); /* write entry-point into string */
+ local_args[0] = argv[0];
+ local_args[1] = str; /* and provide it via the arguments */
+ do_bootelf(cmdtp, 0, 2, local_args);
+}
+#endif /* CFG_CMD_ELF */
--- /dev/null
+/*
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <stdarg.h>
+#include <malloc.h>
+#include <console.h>
+#include <syscall.h>
+
+void **syscall_tbl;
+
+#ifdef CFG_CONSOLE_IS_IN_ENV
+/*
+ * if overwrite_console returns 1, the stdin, stderr and stdout
+ * are switched to the serial port, else the settings in the
+ * environment are used
+ */
+#ifdef CFG_CONSOLE_OVERWRITE_ROUTINE
+extern int overwrite_console (void);
+#else
+int overwrite_console (void)
+{
+ return (0);
+}
+#endif /* CFG_CONSOLE_OVERWRITE_ROUTINE */
+
+#endif /* CFG_CONSOLE_IS_IN_ENV */
+
+static int console_setfile (int file, device_t * dev)
+{
+ int error = 0;
+
+ if (dev == NULL)
+ return -1;
+
+ switch (file) {
+ case stdin:
+ case stdout:
+ case stderr:
+ /* Start new device */
+ if (dev->start) {
+ error = dev->start ();
+ /* If it's not started dont use it */
+ if (error < 0)
+ break;
+ }
+
+ /* Assign the new device (leaving the existing one started) */
+ stdio_devices[file] = dev;
+
+ /*
+ * Update monitor functions
+ * (to use the console stuff by other applications)
+ */
+ switch (file) {
+ case stdin:
+ syscall_tbl[SYSCALL_GETC] = dev->getc;
+ syscall_tbl[SYSCALL_TSTC] = dev->tstc;
+ break;
+ case stdout:
+ syscall_tbl[SYSCALL_PUTC] = dev->putc;
+ syscall_tbl[SYSCALL_PUTS] = dev->puts;
+ syscall_tbl[SYSCALL_PRINTF] = printf;
+ break;
+ }
+ break;
+
+ default: /* Invalid file ID */
+ error = -1;
+ }
+ return error;
+}
+
+/** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
+
+void serial_printf (const char *fmt, ...)
+{
+ va_list args;
+ uint i;
+ char printbuffer[CFG_PBSIZE];
+
+ va_start (args, fmt);
+
+ /* For this to work, printbuffer must be larger than
+ * anything we ever want to print.
+ */
+ i = vsprintf (printbuffer, fmt, args);
+ va_end (args);
+
+ serial_puts (printbuffer);
+}
+
+int fgetc (int file)
+{
+ if (file < MAX_FILES)
+ return stdio_devices[file]->getc ();
+
+ return -1;
+}
+
+int ftstc (int file)
+{
+ if (file < MAX_FILES)
+ return stdio_devices[file]->tstc ();
+
+ return -1;
+}
+
+void fputc (int file, const char c)
+{
+ if (file < MAX_FILES)
+ stdio_devices[file]->putc (c);
+}
+
+void fputs (int file, const char *s)
+{
+ if (file < MAX_FILES)
+ stdio_devices[file]->puts (s);
+}
+
+void fprintf (int file, const char *fmt, ...)
+{
+ va_list args;
+ uint i;
+ char printbuffer[CFG_PBSIZE];
+
+ va_start (args, fmt);
+
+ /* For this to work, printbuffer must be larger than
+ * anything we ever want to print.
+ */
+ i = vsprintf (printbuffer, fmt, args);
+ va_end (args);
+
+ /* Send to desired file */
+ fputs (file, printbuffer);
+}
+
+/** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
+
+int getc (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ if (gd->flags & GD_FLG_DEVINIT) {
+ /* Get from the standard input */
+ return fgetc (stdin);
+ }
+
+ /* Send directly to the handler */
+ return serial_getc ();
+}
+
+int tstc (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ if (gd->flags & GD_FLG_DEVINIT) {
+ /* Test the standard input */
+ return ftstc (stdin);
+ }
+
+ /* Send directly to the handler */
+ return serial_tstc ();
+}
+
+void putc (const char c)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ if (gd->flags & GD_FLG_DEVINIT) {
+ /* Send to the standard output */
+ fputc (stdout, c);
+ } else {
+ /* Send directly to the handler */
+ serial_putc (c);
+ }
+}
+
+void puts (const char *s)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ if (gd->flags & GD_FLG_DEVINIT) {
+ /* Send to the standard output */
+ fputs (stdout, s);
+ } else {
+ /* Send directly to the handler */
+ serial_puts (s);
+ }
+}
+
+void printf (const char *fmt, ...)
+{
+ va_list args;
+ uint i;
+ char printbuffer[CFG_PBSIZE];
+
+ va_start (args, fmt);
+
+ /* For this to work, printbuffer must be larger than
+ * anything we ever want to print.
+ */
+ i = vsprintf (printbuffer, fmt, args);
+ va_end (args);
+
+ /* Print the string */
+ puts (printbuffer);
+}
+
+/* test if ctrl-c was pressed */
+static int ctrlc_disabled = 0; /* see disable_ctrl() */
+static int ctrlc_was_pressed = 0;
+int ctrlc (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ if (!ctrlc_disabled && gd->have_console) {
+ if (tstc ()) {
+ switch (getc ()) {
+ case 0x03: /* ^C - Control C */
+ ctrlc_was_pressed = 1;
+ return 1;
+ default:
+ break;
+ }
+ }
+ }
+ return 0;
+}
+
+/* pass 1 to disable ctrlc() checking, 0 to enable.
+ * returns previous state
+ */
+int disable_ctrlc (int disable)
+{
+ int prev = ctrlc_disabled; /* save previous state */
+
+ ctrlc_disabled = disable;
+ return prev;
+}
+
+int had_ctrlc (void)
+{
+ return ctrlc_was_pressed;
+}
+
+void clear_ctrlc (void)
+{
+ ctrlc_was_pressed = 0;
+}
+
+#ifdef CONFIG_MODEM_SUPPORT_DEBUG
+char screen[1024];
+char *cursor = screen;
+int once = 0;
+inline void dbg(const char *fmt, ...)
+{
+ va_list args;
+ uint i;
+ char printbuffer[CFG_PBSIZE];
+
+ if (!once) {
+ memset(screen, 0, sizeof(screen));
+ once++;
+ }
+
+ va_start(args, fmt);
+
+ /* For this to work, printbuffer must be larger than
+ * anything we ever want to print.
+ */
+ i = vsprintf(printbuffer, fmt, args);
+ va_end(args);
+
+ if ((screen + sizeof(screen) - 1 - cursor) < strlen(printbuffer)+1) {
+ memset(screen, 0, sizeof(screen));
+ cursor = screen;
+ }
+ sprintf(cursor, printbuffer);
+ cursor += strlen(printbuffer);
+
+}
+#else
+inline void dbg(const char *fmt, ...)
+{
+}
+#endif
+
+/** U-Boot INIT FUNCTIONS *************************************************/
+
+int console_assign (int file, char *devname)
+{
+ int flag, i;
+
+ /* Check for valid file */
+ switch (file) {
+ case stdin:
+ flag = DEV_FLAGS_INPUT;
+ break;
+ case stdout:
+ case stderr:
+ flag = DEV_FLAGS_OUTPUT;
+ break;
+ default:
+ return -1;
+ }
+
+ /* Check for valid device name */
+
+ for (i = 1; i <= ListNumItems (devlist); i++) {
+ device_t *dev = ListGetPtrToItem (devlist, i);
+
+ if (strcmp (devname, dev->name) == 0) {
+ if (dev->flags & flag)
+ return console_setfile (file, dev);
+
+ return -1;
+ }
+ }
+
+ return -1;
+}
+
+/* Called before relocation - use serial functions */
+int console_init_f (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ gd->have_console = 1;
+ return (0);
+}
+
+#ifdef CFG_CONSOLE_IS_IN_ENV
+/* search a device */
+device_t *search_device (int flags, char *name)
+{
+ int i, items;
+ device_t *dev = NULL;
+
+ items = ListNumItems (devlist);
+ if (name == NULL)
+ return dev;
+
+ for (i = 1; i <= items; i++) {
+ dev = ListGetPtrToItem (devlist, i);
+ if ((dev->flags & flags) && (strcmp (name, dev->name) == 0)) {
+ break;
+ }
+ }
+ return dev;
+}
+#endif /* CFG_CONSOLE_IS_IN_ENV */
+
+#ifdef CFG_CONSOLE_IS_IN_ENV
+/* Called after the relocation - use desired console functions */
+int console_init_r (void)
+{
+ char *stdinname, *stdoutname, *stderrname;
+ device_t *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
+
+ /* set default handlers at first */
+ syscall_tbl[SYSCALL_GETC] = serial_getc;
+ syscall_tbl[SYSCALL_TSTC] = serial_tstc;
+ syscall_tbl[SYSCALL_PUTC] = serial_putc;
+ syscall_tbl[SYSCALL_PUTS] = serial_puts;
+ syscall_tbl[SYSCALL_PRINTF] = serial_printf;
+
+ /* stdin stdout and stderr are in environment */
+ /* scan for it */
+ stdinname = getenv ("stdin");
+ stdoutname = getenv ("stdout");
+ stderrname = getenv ("stderr");
+
+ if (overwrite_console () == 0) { /* if not overwritten by config switch */
+ inputdev = search_device (DEV_FLAGS_INPUT, stdinname);
+ outputdev = search_device (DEV_FLAGS_OUTPUT, stdoutname);
+ errdev = search_device (DEV_FLAGS_OUTPUT, stderrname);
+ }
+ /* if the devices are overwritten or not found, use default device */
+ if (inputdev == NULL) {
+ inputdev = search_device (DEV_FLAGS_INPUT, "serial");
+ }
+ if (outputdev == NULL) {
+ outputdev = search_device (DEV_FLAGS_OUTPUT, "serial");
+ }
+ if (errdev == NULL) {
+ errdev = search_device (DEV_FLAGS_OUTPUT, "serial");
+ }
+ /* Initializes output console first */
+ if (outputdev != NULL) {
+ console_setfile (stdout, outputdev);
+ }
+ if (errdev != NULL) {
+ console_setfile (stderr, errdev);
+ }
+ if (inputdev != NULL) {
+ console_setfile (stdin, inputdev);
+ }
+
+#ifndef CFG_CONSOLE_INFO_QUIET
+ /* Print information */
+ printf ("In: ");
+ if (stdio_devices[stdin] == NULL) {
+ printf ("No input devices available!\n");
+ } else {
+ printf ("%s\n", stdio_devices[stdin]->name);
+ }
+
+ printf ("Out: ");
+ if (stdio_devices[stdout] == NULL) {
+ printf ("No output devices available!\n");
+ } else {
+ printf ("%s\n", stdio_devices[stdout]->name);
+ }
+
+ printf ("Err: ");
+ if (stdio_devices[stderr] == NULL) {
+ printf ("No error devices available!\n");
+ } else {
+ printf ("%s\n", stdio_devices[stderr]->name);
+ }
+#endif /* CFG_CONSOLE_INFO_QUIET */
+
+#ifdef CFG_CONSOLE_ENV_OVERWRITE
+ /* set the environment variables (will overwrite previous env settings) */
+ for (i = 0; i < 3; i++) {
+ setenv (stdio_names[i], stdio_devices[i]->name);
+ }
+#endif /* CFG_CONSOLE_ENV_OVERWRITE */
+
+#if 0
+ /* If nothing usable installed, use only the initial console */
+ if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
+ return (0);
+#endif
+ return (0);
+}
+
+#else /* CFG_CONSOLE_IS_IN_ENV */
+
+/* Called after the relocation - use desired console functions */
+int console_init_r (void)
+{
+ device_t *inputdev = NULL, *outputdev = NULL;
+ int i, items = ListNumItems (devlist);
+
+ /* Scan devices looking for input and output devices */
+ for (i = 1;
+ (i <= items) && ((inputdev == NULL) || (outputdev == NULL));
+ i++
+ ) {
+ device_t *dev = ListGetPtrToItem (devlist, i);
+
+ if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
+ inputdev = dev;
+ }
+ if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
+ outputdev = dev;
+ }
+ }
+
+ /* Initializes output console first */
+ if (outputdev != NULL) {
+ console_setfile (stdout, outputdev);
+ console_setfile (stderr, outputdev);
+ }
+
+ /* Initializes input console */
+ if (inputdev != NULL) {
+ console_setfile (stdin, inputdev);
+ }
+
+#ifndef CFG_CONSOLE_INFO_QUIET
+ /* Print informations */
+ printf ("In: ");
+ if (stdio_devices[stdin] == NULL) {
+ printf ("No input devices available!\n");
+ } else {
+ printf ("%s\n", stdio_devices[stdin]->name);
+ }
+
+ printf ("Out: ");
+ if (stdio_devices[stdout] == NULL) {
+ printf ("No output devices available!\n");
+ } else {
+ printf ("%s\n", stdio_devices[stdout]->name);
+ }
+
+ printf ("Err: ");
+ if (stdio_devices[stderr] == NULL) {
+ printf ("No error devices available!\n");
+ } else {
+ printf ("%s\n", stdio_devices[stderr]->name);
+ }
+#endif /* CFG_CONSOLE_INFO_QUIET */
+
+ /* Setting environment variables */
+ for (i = 0; i < 3; i++) {
+ setenv (stdio_names[i], stdio_devices[i]->name);
+ }
+
+#if 0
+ /* If nothing usable installed, use only the initial console */
+ if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
+ return (0);
+#endif
+
+ return (0);
+}
+
+#endif /* CFG_CONSOLE_IS_IN_ENV */
--- /dev/null
+/*
+ * Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
+ * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ * Copyright (C) 2000,2001,2002 Wolfgang Denk <wd@denx.de>
+ * Copyright (C) 2001 Josh Huber <huber@mclx.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* U-Boot - Startup Code for PowerPC based Embedded Boards
+ *
+ *
+ * The processor starts at 0xfff00100 and the code is executed
+ * from flash. The code is organized to be at an other address
+ * in memory, but as long we don't jump around before relocating.
+ * board_init lies at a quite high address and when the cpu has
+ * jumped there, everything is ok.
+ */
+#include <config.h>
+#include <74xx_7xx.h>
+#include <version.h>
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#include <galileo/gt64260R.h>
+
+#ifndef CONFIG_IDENT_STRING
+#define CONFIG_IDENT_STRING ""
+#endif
+
+/* We don't want the MMU yet.
+*/
+#undef MSR_KERNEL
+/* Machine Check and Recoverable Interr. */
+#define MSR_KERNEL ( MSR_ME | MSR_RI )
+
+/*
+ * Set up GOT: Global Offset Table
+ *
+ * Use r14 to access the GOT
+ */
+ START_GOT
+ GOT_ENTRY(_GOT2_TABLE_)
+ GOT_ENTRY(_FIXUP_TABLE_)
+
+ GOT_ENTRY(_start)
+ GOT_ENTRY(_start_of_vectors)
+ GOT_ENTRY(_end_of_vectors)
+ GOT_ENTRY(transfer_to_handler)
+
+ GOT_ENTRY(_end)
+ GOT_ENTRY(.bss)
+ END_GOT
+
+/*
+ * r3 - 1st arg to board_init(): IMMP pointer
+ * r4 - 2nd arg to board_init(): boot flag
+ */
+ .text
+ .long 0x27051956 /* U-Boot Magic Number */
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", __DATE__, " - ", __TIME__, ")"
+ .ascii CONFIG_IDENT_STRING, "\0"
+
+ . = EXC_OFF_SYS_RESET
+ .globl _start
+_start:
+ li r21, BOOTFLAG_COLD /* Normal Power-On: Boot from FLASH */
+ b boot_cold
+ sync
+
+ . = EXC_OFF_SYS_RESET + 0x10
+
+ .globl _start_warm
+_start_warm:
+ li r21, BOOTFLAG_WARM /* Software reboot */
+ b boot_warm
+ sync
+
+ /* the boot code is located below the exception table */
+
+ .globl _start_of_vectors
+_start_of_vectors:
+
+/* Machine check */
+ STD_EXCEPTION(0x200, MachineCheck, MachineCheckException)
+
+/* Data Storage exception. "Never" generated on the 860. */
+ STD_EXCEPTION(0x300, DataStorage, UnknownException)
+
+/* Instruction Storage exception. "Never" generated on the 860. */
+ STD_EXCEPTION(0x400, InstStorage, UnknownException)
+
+/* External Interrupt exception. */
+ STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
+
+/* Alignment exception. */
+ . = 0x600
+Alignment:
+ EXCEPTION_PROLOG
+ mfspr r4,DAR
+ stw r4,_DAR(r21)
+ mfspr r5,DSISR
+ stw r5,_DSISR(r21)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ li r20,MSR_KERNEL
+ rlwimi r20,r23,0,16,16 /* copy EE bit from saved MSR */
+ lwz r6,GOT(transfer_to_handler)
+ mtlr r6
+ blrl
+.L_Alignment:
+ .long AlignmentException - _start + EXC_OFF_SYS_RESET
+ .long int_return - _start + EXC_OFF_SYS_RESET
+
+/* Program check exception */
+ . = 0x700
+ProgramCheck:
+ EXCEPTION_PROLOG
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ li r20,MSR_KERNEL
+ rlwimi r20,r23,0,16,16 /* copy EE bit from saved MSR */
+ lwz r6,GOT(transfer_to_handler)
+ mtlr r6
+ blrl
+.L_ProgramCheck:
+ .long ProgramCheckException - _start + EXC_OFF_SYS_RESET
+ .long int_return - _start + EXC_OFF_SYS_RESET
+
+ /* No FPU on MPC8xx. This exception is not supposed to happen.
+ */
+ STD_EXCEPTION(0x800, FPUnavailable, UnknownException)
+
+ /* I guess we could implement decrementer, and may have
+ * to someday for timekeeping.
+ */
+ STD_EXCEPTION(0x900, Decrementer, timer_interrupt)
+ STD_EXCEPTION(0xa00, Trap_0a, UnknownException)
+ STD_EXCEPTION(0xb00, Trap_0b, UnknownException)
+
+ . = 0xc00
+/*
+ * r0 - SYSCALL number
+ * r3-... arguments
+ */
+SystemCall:
+ addis r11,r0,0 /* get functions table addr */
+ ori r11,r11,0 /* Note: this code is patched in trap_init */
+ addis r12,r0,0 /* get number of functions */
+ ori r12,r12,0
+
+ cmplw 0, r0, r12
+ bge 1f
+
+ rlwinm r0,r0,2,0,31 /* fn_addr = fn_tbl[r0] */
+ add r11,r11,r0
+ lwz r11,0(r11)
+
+ li r12,0xd00-4*3 /* save LR & SRRx */
+ mflr r0
+ stw r0,0(r12)
+ mfspr r0,SRR0
+ stw r0,4(r12)
+ mfspr r0,SRR1
+ stw r0,8(r12)
+
+ li r12,0xc00+_back-SystemCall
+ mtlr r12
+ mtspr SRR0,r11
+
+1: SYNC
+ rfi
+
+_back:
+
+ mfmsr r11 /* Disable interrupts */
+ li r12,0
+ ori r12,r12,MSR_EE
+ andc r11,r11,r12
+ SYNC /* Some chip revs need this... */
+ mtmsr r11
+ SYNC
+
+ li r12,0xd00-4*3 /* restore regs */
+ lwz r11,0(r12)
+ mtlr r11
+ lwz r11,4(r12)
+ mtspr SRR0,r11
+ lwz r11,8(r12)
+ mtspr SRR1,r11
+
+ SYNC
+ rfi
+
+ STD_EXCEPTION(0xd00, SingleStep, UnknownException)
+
+ STD_EXCEPTION(0xe00, Trap_0e, UnknownException)
+ STD_EXCEPTION(0xf00, Trap_0f, UnknownException)
+
+ /*
+ * On the MPC8xx, this is a software emulation interrupt. It
+ * occurs for all unimplemented and illegal instructions.
+ */
+ STD_EXCEPTION(0x1000, SoftEmu, SoftEmuException)
+
+ STD_EXCEPTION(0x1100, InstructionTLBMiss, UnknownException)
+ STD_EXCEPTION(0x1200, DataTLBMiss, UnknownException)
+ STD_EXCEPTION(0x1300, InstructionTLBError, UnknownException)
+ STD_EXCEPTION(0x1400, DataTLBError, UnknownException)
+
+ STD_EXCEPTION(0x1500, Reserved5, UnknownException)
+ STD_EXCEPTION(0x1600, Reserved6, UnknownException)
+ STD_EXCEPTION(0x1700, Reserved7, UnknownException)
+ STD_EXCEPTION(0x1800, Reserved8, UnknownException)
+ STD_EXCEPTION(0x1900, Reserved9, UnknownException)
+ STD_EXCEPTION(0x1a00, ReservedA, UnknownException)
+ STD_EXCEPTION(0x1b00, ReservedB, UnknownException)
+
+ STD_EXCEPTION(0x1c00, DataBreakpoint, UnknownException)
+ STD_EXCEPTION(0x1d00, InstructionBreakpoint, UnknownException)
+ STD_EXCEPTION(0x1e00, PeripheralBreakpoint, UnknownException)
+ STD_EXCEPTION(0x1f00, DevPortBreakpoint, UnknownException)
+
+ .globl _end_of_vectors
+_end_of_vectors:
+
+ . = 0x2000
+
+boot_cold:
+boot_warm:
+ /* disable everything */
+ li r0, 0
+ mtspr HID0, r0
+ sync
+ mtmsr 0
+ bl invalidate_bats
+ sync
+
+#ifdef CFG_L2
+ /* init the L2 cache */
+ addis r3, r0, L2_INIT@h
+ ori r3, r3, L2_INIT@l
+ sync
+ mtspr l2cr, r3
+#endif
+#if defined(CONFIG_ALTIVEC) && defined(CONFIG_74xx)
+ .long 0x7e00066c
+ /*
+ * dssall instruction, gas doesn't have it yet
+ * ...for altivec, data stream stop all this probably
+ * isn't needed unless we warm (software) reboot U-Boot
+ */
+#endif
+
+#ifdef CFG_L2
+ /* invalidate the L2 cache */
+ bl l2cache_invalidate
+ sync
+#endif
+#ifdef CFG_BOARD_ASM_INIT
+ /* do early init */
+ bl board_asm_init
+#endif
+
+ /*
+ * Calculate absolute address in FLASH and jump there
+ *------------------------------------------------------*/
+ lis r3, CFG_MONITOR_BASE@h
+ ori r3, r3, CFG_MONITOR_BASE@l
+ addi r3, r3, in_flash - _start + EXC_OFF_SYS_RESET
+ mtlr r3
+ blr
+
+in_flash:
+ /* let the C-code set up the rest */
+ /* */
+ /* Be careful to keep code relocatable ! */
+ /*------------------------------------------------------*/
+
+ /* perform low-level init */
+ /* sdram init, galileo init, etc */
+ /* r3: NHR bit from HID0 */
+
+ /* setup the bats */
+ bl setup_bats
+ sync
+
+ /*
+ * Cache must be enabled here for stack-in-cache trick.
+ * This means we need to enable the BATS.
+ * This means:
+ * 1) for the EVB, original gt regs need to be mapped
+ * 2) need to have an IBAT for the 0xf region,
+ * we are running there!
+ * Cache should be turned on after BATs, since by default
+ * everything is write-through.
+ * The init-mem BAT can be reused after reloc. The old
+ * gt-regs BAT can be reused after board_init_f calls
+ * board_pre_init (EVB only).
+ */
+#if !defined(CONFIG_BAB7xx) && !defined(CONFIG_ELPPC)
+ /* enable address translation */
+ bl enable_addr_trans
+ sync
+
+ /* enable and invalidate the data cache */
+ bl l1dcache_enable
+ sync
+#endif
+#ifdef CFG_INIT_RAM_LOCK
+ bl lock_ram_in_cache
+ sync
+#endif
+
+ /* set up the stack pointer in our newly created
+ * cache-ram (r1) */
+ lis r1, (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET)@h
+ ori r1, r1, (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET)@l
+
+ li r0, 0 /* Make room for stack frame header and */
+ stwu r0, -4(r1) /* clear final stack frame so that */
+ stwu r0, -4(r1) /* stack backtraces terminate cleanly */
+
+ GET_GOT /* initialize GOT access */
+
+ /* run low-level CPU init code (from Flash) */
+ bl cpu_init_f
+ sync
+
+ mr r3, r21
+
+ /* r3: BOOTFLAG */
+ /* run 1st part of board init code (from Flash) */
+ bl board_init_f
+ sync
+
+ /* NOTREACHED */
+
+ .globl invalidate_bats
+invalidate_bats:
+ /* invalidate BATs */
+ mtspr IBAT0U, r0
+ mtspr IBAT1U, r0
+ mtspr IBAT2U, r0
+ mtspr IBAT3U, r0
+ isync
+ mtspr DBAT0U, r0
+ mtspr DBAT1U, r0
+ mtspr DBAT2U, r0
+ mtspr DBAT3U, r0
+ isync
+ sync
+ blr
+
+ /* setup_bats - set them up to some initial state */
+ .globl setup_bats
+setup_bats:
+ addis r0, r0, 0x0000
+
+ /* IBAT 0 */
+ addis r4, r0, CFG_IBAT0L@h
+ ori r4, r4, CFG_IBAT0L@l
+ addis r3, r0, CFG_IBAT0U@h
+ ori r3, r3, CFG_IBAT0U@l
+ mtspr IBAT0L, r4
+ mtspr IBAT0U, r3
+ isync
+
+ /* DBAT 0 */
+ addis r4, r0, CFG_DBAT0L@h
+ ori r4, r4, CFG_DBAT0L@l
+ addis r3, r0, CFG_DBAT0U@h
+ ori r3, r3, CFG_DBAT0U@l
+ mtspr DBAT0L, r4
+ mtspr DBAT0U, r3
+ isync
+
+ /* IBAT 1 */
+ addis r4, r0, CFG_IBAT1L@h
+ ori r4, r4, CFG_IBAT1L@l
+ addis r3, r0, CFG_IBAT1U@h
+ ori r3, r3, CFG_IBAT1U@l
+ mtspr IBAT1L, r4
+ mtspr IBAT1U, r3
+ isync
+
+ /* DBAT 1 */
+ addis r4, r0, CFG_DBAT1L@h
+ ori r4, r4, CFG_DBAT1L@l
+ addis r3, r0, CFG_DBAT1U@h
+ ori r3, r3, CFG_DBAT1U@l
+ mtspr DBAT1L, r4
+ mtspr DBAT1U, r3
+ isync
+
+ /* IBAT 2 */
+ addis r4, r0, CFG_IBAT2L@h
+ ori r4, r4, CFG_IBAT2L@l
+ addis r3, r0, CFG_IBAT2U@h
+ ori r3, r3, CFG_IBAT2U@l
+ mtspr IBAT2L, r4
+ mtspr IBAT2U, r3
+ isync
+
+ /* DBAT 2 */
+ addis r4, r0, CFG_DBAT2L@h
+ ori r4, r4, CFG_DBAT2L@l
+ addis r3, r0, CFG_DBAT2U@h
+ ori r3, r3, CFG_DBAT2U@l
+ mtspr DBAT2L, r4
+ mtspr DBAT2U, r3
+ isync
+
+ /* IBAT 3 */
+ addis r4, r0, CFG_IBAT3L@h
+ ori r4, r4, CFG_IBAT3L@l
+ addis r3, r0, CFG_IBAT3U@h
+ ori r3, r3, CFG_IBAT3U@l
+ mtspr IBAT3L, r4
+ mtspr IBAT3U, r3
+ isync
+
+ /* DBAT 3 */
+ addis r4, r0, CFG_DBAT3L@h
+ ori r4, r4, CFG_DBAT3L@l
+ addis r3, r0, CFG_DBAT3U@h
+ ori r3, r3, CFG_DBAT3U@l
+ mtspr DBAT3L, r4
+ mtspr DBAT3U, r3
+ isync
+
+ /* bats are done, now invalidate the TLBs */
+
+ addis r3, 0, 0x0000
+ addis r5, 0, 0x4 /* upper bound of 0x00040000 for 7400/750 */
+
+ isync
+
+tlblp:
+ tlbie r3
+ sync
+ addi r3, r3, 0x1000
+ cmp 0, 0, r3, r5
+ blt tlblp
+
+ blr
+
+ .globl enable_addr_trans
+enable_addr_trans:
+ /* enable address translation */
+ mfmsr r5
+ ori r5, r5, (MSR_IR | MSR_DR)
+ mtmsr r5
+ isync
+ blr
+
+ .globl disable_addr_trans
+disable_addr_trans:
+ /* disable address translation */
+ mflr r4
+ mfmsr r3
+ andi. r0, r3, (MSR_IR | MSR_DR)
+ beqlr
+ andc r3, r3, r0
+ mtspr SRR0, r4
+ mtspr SRR1, r3
+ rfi
+
+/*
+ * This code finishes saving the registers to the exception frame
+ * and jumps to the appropriate handler for the exception.
+ * Register r21 is pointer into trap frame, r1 has new stack pointer.
+ */
+ .globl transfer_to_handler
+transfer_to_handler:
+ stw r22,_NIP(r21)
+ lis r22,MSR_POW@h
+ andc r23,r23,r22
+ stw r23,_MSR(r21)
+ SAVE_GPR(7, r21)
+ SAVE_4GPRS(8, r21)
+ SAVE_8GPRS(12, r21)
+ SAVE_8GPRS(24, r21)
+ mflr r23
+ andi. r24,r23,0x3f00 /* get vector offset */
+ stw r24,TRAP(r21)
+ li r22,0
+ stw r22,RESULT(r21)
+ mtspr SPRG2,r22 /* r1 is now kernel sp */
+ lwz r24,0(r23) /* virtual address of handler */
+ lwz r23,4(r23) /* where to go when done */
+ mtspr SRR0,r24
+ mtspr SRR1,r20
+ mtlr r23
+ SYNC
+ rfi /* jump to handler, enable MMU */
+
+int_return:
+ mfmsr r28 /* Disable interrupts */
+ li r4,0
+ ori r4,r4,MSR_EE
+ andc r28,r28,r4
+ SYNC /* Some chip revs need this... */
+ mtmsr r28
+ SYNC
+ lwz r2,_CTR(r1)
+ lwz r0,_LINK(r1)
+ mtctr r2
+ mtlr r0
+ lwz r2,_XER(r1)
+ lwz r0,_CCR(r1)
+ mtspr XER,r2
+ mtcrf 0xFF,r0
+ REST_10GPRS(3, r1)
+ REST_10GPRS(13, r1)
+ REST_8GPRS(23, r1)
+ REST_GPR(31, r1)
+ lwz r2,_NIP(r1) /* Restore environment */
+ lwz r0,_MSR(r1)
+ mtspr SRR0,r2
+ mtspr SRR1,r0
+ lwz r0,GPR0(r1)
+ lwz r2,GPR2(r1)
+ lwz r1,GPR1(r1)
+ SYNC
+ rfi
+
+ .globl dc_read
+dc_read:
+ blr
+
+ .globl get_pvr
+get_pvr:
+ mfspr r3, PVR
+ blr
+
+/*-----------------------------------------------------------------------*/
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * r3 = dest
+ * r4 = src
+ * r5 = length in bytes
+ * r6 = cachelinesize
+ */
+ .globl relocate_code
+relocate_code:
+ mr r1, r3 /* Set new stack pointer */
+ mr r9, r4 /* Save copy of Global Data pointer */
+ mr r10, r5 /* Save copy of Destination Address */
+
+ mr r3, r5 /* Destination Address */
+ lis r4, CFG_MONITOR_BASE@h /* Source Address */
+ ori r4, r4, CFG_MONITOR_BASE@l
+ lis r5, CFG_MONITOR_LEN@h /* Length in Bytes */
+ ori r5, r5, CFG_MONITOR_LEN@l
+ li r6, CFG_CACHELINE_SIZE /* Cache Line Size */
+
+ /*
+ * Fix GOT pointer:
+ *
+ * New GOT-PTR = (old GOT-PTR - CFG_MONITOR_BASE) + Destination Address
+ *
+ * Offset:
+ */
+ sub r15, r10, r4
+
+ /* First our own GOT */
+ add r14, r14, r15
+ /* then the one used by the C code */
+ add r30, r30, r15
+
+ /*
+ * Now relocate code
+ */
+#ifdef CONFIG_ECC
+ bl board_relocate_rom
+ sync
+ mr r3, r10 /* Destination Address */
+ lis r4, CFG_MONITOR_BASE@h /* Source Address */
+ ori r4, r4, CFG_MONITOR_BASE@l
+ lis r5, CFG_MONITOR_LEN@h /* Length in Bytes */
+ ori r5, r5, CFG_MONITOR_LEN@l
+ li r6, CFG_CACHELINE_SIZE /* Cache Line Size */
+#else
+ cmplw cr1,r3,r4
+ addi r0,r5,3
+ srwi. r0,r0,2
+ beq cr1,4f /* In place copy is not necessary */
+ beq 7f /* Protect against 0 count */
+ mtctr r0
+ bge cr1,2f
+
+ la r8,-4(r4)
+ la r7,-4(r3)
+1: lwzu r0,4(r8)
+ stwu r0,4(r7)
+ bdnz 1b
+ b 4f
+
+2: slwi r0,r0,2
+ add r8,r4,r0
+ add r7,r3,r0
+3: lwzu r0,-4(r8)
+ stwu r0,-4(r7)
+ bdnz 3b
+#endif
+/*
+ * Now flush the cache: note that we must start from a cache aligned
+ * address. Otherwise we might miss one cache line.
+ */
+4: cmpwi r6,0
+ add r5,r3,r5
+ beq 7f /* Always flush prefetch queue in any case */
+ subi r0,r6,1
+ andc r3,r3,r0
+ mr r4,r3
+5: dcbst 0,r4
+ add r4,r4,r6
+ cmplw r4,r5
+ blt 5b
+ sync /* Wait for all dcbst to complete on bus */
+ mr r4,r3
+6: icbi 0,r4
+ add r4,r4,r6
+ cmplw r4,r5
+ blt 6b
+7: sync /* Wait for all icbi to complete on bus */
+ isync
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+ addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
+ mtlr r0
+ blr
+
+in_ram:
+#ifdef CONFIG_ECC
+ bl board_init_ecc
+#endif
+ /*
+ * Relocation Function, r14 point to got2+0x8000
+ *
+ * Adjust got2 pointers, no need to check for 0, this code
+ * already puts a few entries in the table.
+ */
+ li r0,__got2_entries@sectoff@l
+ la r3,GOT(_GOT2_TABLE_)
+ lwz r11,GOT(_GOT2_TABLE_)
+ mtctr r0
+ sub r11,r3,r11
+ addi r3,r3,-4
+1: lwzu r0,4(r3)
+ add r0,r0,r11
+ stw r0,0(r3)
+ bdnz 1b
+
+ /*
+ * Now adjust the fixups and the pointers to the fixups
+ * in case we need to move ourselves again.
+ */
+2: li r0,__fixup_entries@sectoff@l
+ lwz r3,GOT(_FIXUP_TABLE_)
+ cmpwi r0,0
+ mtctr r0
+ addi r3,r3,-4
+ beq 4f
+3: lwzu r4,4(r3)
+ lwzux r0,r4,r11
+ add r0,r0,r11
+ stw r10,0(r3)
+ stw r0,0(r4)
+ bdnz 3b
+4:
+/* clear_bss: */
+ /*
+ * Now clear BSS segment
+ */
+ lwz r3,GOT(.bss)
+ lwz r4,GOT(_end)
+
+ cmplw 0, r3, r4
+ beq 6f
+
+ li r0, 0
+5:
+ stw r0, 0(r3)
+ addi r3, r3, 4
+ cmplw 0, r3, r4
+ bne 5b
+6:
+ mr r3, r10 /* Destination Address */
+ bl after_reloc
+
+ /* not reached - end relocate_code */
+/*-----------------------------------------------------------------------*/
+
+ /* Problems accessing "end" in C, so do it here */
+ .globl get_endaddr
+get_endaddr:
+ lwz r3,GOT(_end)
+ blr
+
+ /*
+ * Copy exception vector code to low memory
+ *
+ * r3: dest_addr
+ * r7: source address, r8: end address, r9: target address
+ */
+ .globl trap_init
+trap_init:
+ lwz r7, GOT(_start)
+ lwz r8, GOT(_end_of_vectors)
+
+ rlwinm r9, r7, 0, 18, 31 /* _start & 0x3FFF */
+
+ cmplw 0, r7, r8
+ bgelr /* return if r7>=r8 - just in case */
+
+ mflr r4 /* save link register */
+1:
+ lwz r0, 0(r7)
+ stw r0, 0(r9)
+ addi r7, r7, 4
+ addi r9, r9, 4
+ cmplw 0, r7, r8
+ bne 1b
+
+ /*
+ * relocate `hdlr' and `int_return' entries
+ */
+ li r7, .L_MachineCheck - _start + EXC_OFF_SYS_RESET
+ li r8, Alignment - _start + EXC_OFF_SYS_RESET
+2:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 2b
+
+ li r7, .L_Alignment - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_ProgramCheck - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_FPUnavailable - _start + EXC_OFF_SYS_RESET
+ li r8, SystemCall - _start + EXC_OFF_SYS_RESET
+3:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 3b
+
+ li r7, .L_SingleStep - _start + EXC_OFF_SYS_RESET
+ li r8, _end_of_vectors - _start + EXC_OFF_SYS_RESET
+4:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 4b
+
+ /* enable execptions from RAM vectors */
+ mfmsr r7
+ li r8,MSR_IP
+ andc r7,r7,r8
+ mtmsr r7
+
+ mtlr r4 /* restore link register */
+ blr
+
+ /*
+ * Function: relocate entries for one exception vector
+ */
+trap_reloc:
+ lwz r0, 0(r7) /* hdlr ... */
+ add r0, r0, r3 /* ... += dest_addr */
+ stw r0, 0(r7)
+
+ lwz r0, 4(r7) /* int_return ... */
+ add r0, r0, r3 /* ... += dest_addr */
+ stw r0, 4(r7)
+
+ sync
+ isync
+
+ blr
+
+#ifdef CFG_INIT_RAM_LOCK
+lock_ram_in_cache:
+ /* Allocate Initial RAM in data cache.
+ */
+ lis r3, (CFG_INIT_RAM_ADDR & ~31)@h
+ ori r3, r3, (CFG_INIT_RAM_ADDR & ~31)@l
+ li r2, ((CFG_INIT_RAM_END & ~31) + \
+ (CFG_INIT_RAM_ADDR & 31) + 31) / 32
+ mtctr r2
+1:
+ dcbz r0, r3
+ addi r3, r3, 32
+ bdnz 1b
+
+ /* Lock the data cache */
+ mfspr r0, HID0
+ ori r0, r0, 0x1000
+ sync
+ mtspr HID0, r0
+ sync
+ blr
+
+.globl unlock_ram_in_cache
+unlock_ram_in_cache:
+ /* invalidate the INIT_RAM section */
+ lis r3, (CFG_INIT_RAM_ADDR & ~31)@h
+ ori r3, r3, (CFG_INIT_RAM_ADDR & ~31)@l
+ li r2, ((CFG_INIT_RAM_END & ~31) + \
+ (CFG_INIT_RAM_ADDR & 31) + 31) / 32
+ mtctr r2
+1: icbi r0, r3
+ addi r3, r3, 32
+ bdnz 1b
+ sync /* Wait for all icbi to complete on bus */
+ isync
+
+ /* Unlock the data cache and invalidate it */
+ mfspr r0, HID0
+ li r3,0x1000
+ andc r0,r0,r3
+ li r3,0x0400
+ or r0,r0,r3
+ sync
+ mtspr HID0, r0
+ sync
+ blr
+#endif
--- /dev/null
+/*
+ * Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
+ * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ * Copyright (C) 2000, 2001,2002 Wolfgang Denk <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * U-Boot - Startup Code for MPC8260 PowerPC based Embedded Boards
+ */
+#include <config.h>
+#include <mpc8260.h>
+#include <version.h>
+
+#define CONFIG_8260 1 /* needed for Linux kernel header files */
+#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#ifndef CONFIG_IDENT_STRING
+#define CONFIG_IDENT_STRING ""
+#endif
+
+/* We don't want the MMU yet.
+*/
+#undef MSR_KERNEL
+/* Floating Point enable, Machine Check and Recoverable Interr. */
+#ifdef DEBUG
+#define MSR_KERNEL (MSR_FP|MSR_RI)
+#else
+#define MSR_KERNEL (MSR_FP|MSR_ME|MSR_RI)
+#endif
+
+/*
+ * Set up GOT: Global Offset Table
+ *
+ * Use r14 to access the GOT
+ */
+ START_GOT
+ GOT_ENTRY(_GOT2_TABLE_)
+ GOT_ENTRY(_FIXUP_TABLE_)
+
+ GOT_ENTRY(_start)
+ GOT_ENTRY(_start_of_vectors)
+ GOT_ENTRY(_end_of_vectors)
+ GOT_ENTRY(transfer_to_handler)
+
+ GOT_ENTRY(_end)
+ GOT_ENTRY(.bss)
+#if defined(CONFIG_HYMOD)
+ GOT_ENTRY(environment)
+#endif
+ END_GOT
+
+/*
+ * Version string - must be in data segment because MPC8260 uses the first
+ * 256 bytes for the Hard Reset Configuration Word table (see below).
+ * Similarly, can't have the U-Boot Magic Number as the first thing in
+ * the image - don't know how this will affect the image tools, but I guess
+ * I'll find out soon
+ */
+ .data
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", __DATE__, " - ", __TIME__, ")"
+ .ascii CONFIG_IDENT_STRING, "\0"
+
+/*
+ * Hard Reset Configuration Word (HRCW) table
+ *
+ * The Hard Reset Configuration Word (HRCW) sets a number of useful things
+ * such as whether there is an external memory controller, whether the
+ * PowerPC core is disabled (i.e. only the communications processor is
+ * active, accessed by another CPU on the bus), whether using external
+ * arbitration, external bus mode, boot port size, core initial prefix,
+ * internal space base, boot memory space, etc.
+ *
+ * These things dictate where the processor begins execution, where the
+ * boot ROM appears in memory, the memory controller setup when access
+ * boot ROM, etc. The HRCW is *extremely* important.
+ *
+ * The HRCW is read from the bus during reset. One CPU on the bus will
+ * be a hard reset configuration master, any others will be hard reset
+ * configuration slaves. The master reads eight HRCWs from flash during
+ * reset - the first it uses for itself, the other 7 it communicates to
+ * up to 7 configuration slaves by some complicated mechanism, which is
+ * not really important here.
+ *
+ * The configuration master performs 32 successive reads starting at address
+ * 0 and incrementing by 8 each read (i.e. on 64 bit boundaries) but only 8
+ * bits is read, and always from byte lane D[0-7] (so that port size of the
+ * boot device does not matter). The first four reads form the 32 bit HRCW
+ * for the master itself. The second four reads form the HRCW for the first
+ * slave, and so on, up to seven slaves. The 32 bit HRCW is formed by
+ * concatenating the four bytes, with the first read placed in byte 0 (the
+ * most significant byte), and so on with the fourth read placed in byte 3
+ * (the least significant byte).
+ */
+#define _HRCW_TABLE_ENTRY(w) \
+ .fill 8,1,(((w)>>24)&0xff); \
+ .fill 8,1,(((w)>>16)&0xff); \
+ .fill 8,1,(((w)>> 8)&0xff); \
+ .fill 8,1,(((w) )&0xff)
+ .text
+ .globl _hrcw_table
+_hrcw_table:
+ _HRCW_TABLE_ENTRY(CFG_HRCW_MASTER)
+ _HRCW_TABLE_ENTRY(CFG_HRCW_SLAVE1)
+ _HRCW_TABLE_ENTRY(CFG_HRCW_SLAVE2)
+ _HRCW_TABLE_ENTRY(CFG_HRCW_SLAVE3)
+ _HRCW_TABLE_ENTRY(CFG_HRCW_SLAVE4)
+ _HRCW_TABLE_ENTRY(CFG_HRCW_SLAVE5)
+ _HRCW_TABLE_ENTRY(CFG_HRCW_SLAVE6)
+ _HRCW_TABLE_ENTRY(CFG_HRCW_SLAVE7)
+/*
+ * After configuration, a system reset exception is executed using the
+ * vector at offset 0x100 relative to the base set by MSR[IP]. If MSR[IP]
+ * is 0, the base address is 0x00000000. If MSR[IP] is 1, the base address
+ * is 0xfff00000. In the case of a Power On Reset or Hard Reset, the value
+ * of MSR[IP] is determined by the CIP field in the HRCW.
+ *
+ * Other bits in the HRCW set up the Base Address and Port Size in BR0.
+ * This determines the location of the boot ROM (flash or EPROM) in the
+ * processor's address space at boot time. As long as the HRCW is set up
+ * so that we eventually end up executing the code below when the processor
+ * executes the reset exception, the actual values used should not matter.
+ *
+ * Once we have got here, the address mask in OR0 is cleared so that the
+ * bottom 32K of the boot ROM is effectively repeated all throughout the
+ * processor's address space, after which we can jump to the absolute
+ * address at which the boot ROM was linked at compile time, and proceed
+ * to initialise the memory controller without worrying if the rug will be
+ * pulled out from under us, so to speak (it will be fine as long as we
+ * configure BR0 with the same boot ROM link address).
+ */
+ . = EXC_OFF_SYS_RESET
+
+ .globl _start
+_start:
+ li r21, BOOTFLAG_COLD /* Normal Power-On: Boot from FLASH*/
+ b boot_cold
+
+ . = EXC_OFF_SYS_RESET + 0x10
+
+ .globl _start_warm
+_start_warm:
+ li r21, BOOTFLAG_WARM /* Software reboot */
+ b boot_warm
+
+boot_cold:
+boot_warm:
+ mfmsr r5 /* save msr contents */
+
+#if defined(CONFIG_COGENT)
+ /* this is what the cogent EPROM does */
+ li r0, 0
+ mtmsr r0
+ isync
+ bl cogent_init_8260
+#endif /* CONFIG_COGENT */
+
+#if defined(CFG_DEFAULT_IMMR)
+ lis r3, CFG_IMMR@h
+ ori r3, r3, CFG_IMMR@l
+ lis r4, CFG_DEFAULT_IMMR@h
+ stw r3, 0x1A8(r4)
+#endif /* CFG_DEFAULT_IMMR */
+
+ /* Initialise the MPC8260 processor core */
+ /*--------------------------------------------------------------*/
+
+ bl init_8260_core
+
+#ifndef CFG_RAMBOOT
+ /* When booting from ROM (Flash or EPROM), clear the */
+ /* Address Mask in OR0 so ROM appears everywhere */
+ /*--------------------------------------------------------------*/
+
+ lis r3, (CFG_IMMR+IM_REGBASE)@h
+ lwz r4, IM_OR0@l(r3)
+ li r5, 0x7fff
+ and r4, r4, r5
+ stw r4, IM_OR0@l(r3)
+
+ /* Calculate absolute address in FLASH and jump there */
+ /*--------------------------------------------------------------*/
+
+ lis r3, CFG_MONITOR_BASE@h
+ ori r3, r3, CFG_MONITOR_BASE@l
+ addi r3, r3, in_flash - _start + EXC_OFF_SYS_RESET
+ mtlr r3
+ blr
+
+in_flash:
+#endif /* CFG_RAMBOOT */
+
+ /* initialize some things that are hard to access from C */
+ /*--------------------------------------------------------------*/
+
+ lis r3, CFG_IMMR@h /* set up stack in internal DPRAM */
+ ori r1, r3, CFG_INIT_SP_OFFSET
+ li r0, 0 /* Make room for stack frame header and */
+ stwu r0, -4(r1) /* clear final stack frame so that */
+ stwu r0, -4(r1) /* stack backtraces terminate cleanly */
+
+ /* let the C-code set up the rest */
+ /* */
+ /* Be careful to keep code relocatable ! */
+ /*--------------------------------------------------------------*/
+
+ GET_GOT /* initialize GOT access */
+
+ /* r3: IMMR */
+ bl cpu_init_f /* run low-level CPU init code (in Flash)*/
+
+#ifdef DEBUG
+ bl init_debug /* set up debugging stuff */
+#endif
+
+ mr r3, r21
+ /* r3: BOOTFLAG */
+ bl board_init_f /* run 1st part of board init code (in Flash)*/
+
+/*
+ * Vector Table
+ */
+
+ .globl _start_of_vectors
+_start_of_vectors:
+
+/* Machine check */
+ STD_EXCEPTION(0x200, MachineCheck, MachineCheckException)
+
+/* Data Storage exception. */
+ STD_EXCEPTION(0x300, DataStorage, UnknownException)
+
+/* Instruction Storage exception. */
+ STD_EXCEPTION(0x400, InstStorage, UnknownException)
+
+/* External Interrupt exception. */
+ STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
+
+/* Alignment exception. */
+ . = 0x600
+Alignment:
+ EXCEPTION_PROLOG
+ mfspr r4,DAR
+ stw r4,_DAR(r21)
+ mfspr r5,DSISR
+ stw r5,_DSISR(r21)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ li r20,MSR_KERNEL
+ rlwimi r20,r23,0,16,16 /* copy EE bit from saved MSR */
+ rlwimi r20,r23,0,25,25 /* copy IP bit from saved MSR */
+ lwz r6,GOT(transfer_to_handler)
+ mtlr r6
+ blrl
+.L_Alignment:
+ .long AlignmentException - _start + EXC_OFF_SYS_RESET
+ .long int_return - _start + EXC_OFF_SYS_RESET
+
+/* Program check exception */
+ . = 0x700
+ProgramCheck:
+ EXCEPTION_PROLOG
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ li r20,MSR_KERNEL
+ rlwimi r20,r23,0,16,16 /* copy EE bit from saved MSR */
+ rlwimi r20,r23,0,25,25 /* copy IP bit from saved MSR */
+ lwz r6,GOT(transfer_to_handler)
+ mtlr r6
+ blrl
+.L_ProgramCheck:
+ .long ProgramCheckException - _start + EXC_OFF_SYS_RESET
+ .long int_return - _start + EXC_OFF_SYS_RESET
+
+ STD_EXCEPTION(0x800, FPUnavailable, UnknownException)
+
+ /* I guess we could implement decrementer, and may have
+ * to someday for timekeeping.
+ */
+ STD_EXCEPTION(0x900, Decrementer, timer_interrupt)
+
+ STD_EXCEPTION(0xa00, Trap_0a, UnknownException)
+ STD_EXCEPTION(0xb00, Trap_0b, UnknownException)
+
+ . = 0xc00
+/*
+ * r0 - SYSCALL number
+ * r3-... arguments
+ */
+SystemCall:
+ addis r11,r0,0 /* get functions table addr */
+ ori r11,r11,0 /* Note: this code is patched in trap_init */
+ addis r12,r0,0 /* get number of functions */
+ ori r12,r12,0
+
+ cmplw 0, r0, r12
+ bge 1f
+
+ rlwinm r0,r0,2,0,31 /* fn_addr = fn_tbl[r0] */
+ add r11,r11,r0
+ lwz r11,0(r11)
+
+ li r12,0xd00-4*3 /* save LR & SRRx */
+ mflr r0
+ stw r0,0(r12)
+ mfspr r0,SRR0
+ stw r0,4(r12)
+ mfspr r0,SRR1
+ stw r0,8(r12)
+
+ li r12,0xc00+_back-SystemCall
+ mtlr r12
+ mtspr SRR0,r11
+
+1: SYNC
+ rfi
+
+_back:
+
+ mfmsr r11 /* Disable interrupts */
+ li r12,0
+ ori r12,r12,MSR_EE
+ andc r11,r11,r12
+ SYNC /* Some chip revs need this... */
+ mtmsr r11
+ SYNC
+
+ li r12,0xd00-4*3 /* restore regs */
+ lwz r11,0(r12)
+ mtlr r11
+ lwz r11,4(r12)
+ mtspr SRR0,r11
+ lwz r11,8(r12)
+ mtspr SRR1,r11
+
+ SYNC
+ rfi
+
+ STD_EXCEPTION(0xd00, SingleStep, UnknownException)
+
+ STD_EXCEPTION(0xe00, Trap_0e, UnknownException)
+ STD_EXCEPTION(0xf00, Trap_0f, UnknownException)
+
+ STD_EXCEPTION(0x1000, InstructionTLBMiss, UnknownException)
+ STD_EXCEPTION(0x1100, DataLoadTLBMiss, UnknownException)
+ STD_EXCEPTION(0x1200, DataStoreTLBMiss, UnknownException)
+#ifdef DEBUG
+ . = 0x1300
+ /*
+ * This exception occurs when the program counter matches the
+ * Instruction Address Breakpoint Register (IABR).
+ *
+ * I want the cpu to halt if this occurs so I can hunt around
+ * with the debugger and look at things.
+ *
+ * When DEBUG is defined, both machine check enable (in the MSR)
+ * and checkstop reset enable (in the reset mode register) are
+ * turned off and so a checkstop condition will result in the cpu
+ * halting.
+ *
+ * I force the cpu into a checkstop condition by putting an illegal
+ * instruction here (at least this is the theory).
+ *
+ * well - that didnt work, so just do an infinite loop!
+ */
+1: b 1b
+#else
+ STD_EXCEPTION(0x1300, InstructionBreakpoint, DebugException)
+#endif
+ STD_EXCEPTION(0x1400, SMI, UnknownException)
+
+ STD_EXCEPTION(0x1500, Trap_15, UnknownException)
+ STD_EXCEPTION(0x1600, Trap_16, UnknownException)
+ STD_EXCEPTION(0x1700, Trap_17, UnknownException)
+ STD_EXCEPTION(0x1800, Trap_18, UnknownException)
+ STD_EXCEPTION(0x1900, Trap_19, UnknownException)
+ STD_EXCEPTION(0x1a00, Trap_1a, UnknownException)
+ STD_EXCEPTION(0x1b00, Trap_1b, UnknownException)
+ STD_EXCEPTION(0x1c00, Trap_1c, UnknownException)
+ STD_EXCEPTION(0x1d00, Trap_1d, UnknownException)
+ STD_EXCEPTION(0x1e00, Trap_1e, UnknownException)
+ STD_EXCEPTION(0x1f00, Trap_1f, UnknownException)
+ STD_EXCEPTION(0x2000, Trap_20, UnknownException)
+ STD_EXCEPTION(0x2100, Trap_21, UnknownException)
+ STD_EXCEPTION(0x2200, Trap_22, UnknownException)
+ STD_EXCEPTION(0x2300, Trap_23, UnknownException)
+ STD_EXCEPTION(0x2400, Trap_24, UnknownException)
+ STD_EXCEPTION(0x2500, Trap_25, UnknownException)
+ STD_EXCEPTION(0x2600, Trap_26, UnknownException)
+ STD_EXCEPTION(0x2700, Trap_27, UnknownException)
+ STD_EXCEPTION(0x2800, Trap_28, UnknownException)
+ STD_EXCEPTION(0x2900, Trap_29, UnknownException)
+ STD_EXCEPTION(0x2a00, Trap_2a, UnknownException)
+ STD_EXCEPTION(0x2b00, Trap_2b, UnknownException)
+ STD_EXCEPTION(0x2c00, Trap_2c, UnknownException)
+ STD_EXCEPTION(0x2d00, Trap_2d, UnknownException)
+ STD_EXCEPTION(0x2e00, Trap_2e, UnknownException)
+ STD_EXCEPTION(0x2f00, Trap_2f, UnknownException)
+
+
+ .globl _end_of_vectors
+_end_of_vectors:
+
+ . = 0x3000
+
+/*
+ * This code finishes saving the registers to the exception frame
+ * and jumps to the appropriate handler for the exception.
+ * Register r21 is pointer into trap frame, r1 has new stack pointer.
+ */
+ .globl transfer_to_handler
+transfer_to_handler:
+ stw r22,_NIP(r21)
+ lis r22,MSR_POW@h
+ andc r23,r23,r22
+ stw r23,_MSR(r21)
+ SAVE_GPR(7, r21)
+ SAVE_4GPRS(8, r21)
+ SAVE_8GPRS(12, r21)
+ SAVE_8GPRS(24, r21)
+ mflr r23
+ andi. r24,r23,0x3f00 /* get vector offset */
+ stw r24,TRAP(r21)
+ li r22,0
+ stw r22,RESULT(r21)
+ lwz r24,0(r23) /* virtual address of handler */
+ lwz r23,4(r23) /* where to go when done */
+ mtspr SRR0,r24
+ mtspr SRR1,r20
+ mtlr r23
+ SYNC
+ rfi /* jump to handler, enable MMU */
+
+int_return:
+ mfmsr r28 /* Disable interrupts */
+ li r4,0
+ ori r4,r4,MSR_EE
+ andc r28,r28,r4
+ SYNC /* Some chip revs need this... */
+ mtmsr r28
+ SYNC
+ lwz r2,_CTR(r1)
+ lwz r0,_LINK(r1)
+ mtctr r2
+ mtlr r0
+ lwz r2,_XER(r1)
+ lwz r0,_CCR(r1)
+ mtspr XER,r2
+ mtcrf 0xFF,r0
+ REST_10GPRS(3, r1)
+ REST_10GPRS(13, r1)
+ REST_8GPRS(23, r1)
+ REST_GPR(31, r1)
+ lwz r2,_NIP(r1) /* Restore environment */
+ lwz r0,_MSR(r1)
+ mtspr SRR0,r2
+ mtspr SRR1,r0
+ lwz r0,GPR0(r1)
+ lwz r2,GPR2(r1)
+ lwz r1,GPR1(r1)
+ SYNC
+ rfi
+
+#if defined(CONFIG_COGENT)
+
+/*
+ * This code initialises the MPC8260 processor core
+ * (conforms to PowerPC 603e spec)
+ */
+
+ .globl cogent_init_8260
+cogent_init_8260:
+
+ /* Taken from page 14 of CMA282 manual */
+ /*--------------------------------------------------------------*/
+
+ lis r4, (CFG_IMMR+IM_REGBASE)@h
+ lis r3, CFG_IMMR@h
+ stw r3, IM_IMMR@l(r4)
+ lwz r3, IM_IMMR@l(r4)
+ stw r3, 0(r0)
+ lis r3, CFG_SYPCR@h
+ ori r3, r3, CFG_SYPCR@l
+ stw r3, IM_SYPCR@l(r4)
+ lwz r3, IM_SYPCR@l(r4)
+ stw r3, 4(r0)
+ lis r3, CFG_SCCR@h
+ ori r3, r3, CFG_SCCR@l
+ stw r3, IM_SCCR@l(r4)
+ lwz r3, IM_SCCR@l(r4)
+ stw r3, 8(r0)
+
+ /* the rest of this was disassembled from the */
+ /* EPROM code that came with my CMA282 CPU module */
+ /*--------------------------------------------------------------*/
+
+ lis r1, 0x1234
+ ori r1, r1, 0x5678
+ stw r1, 0x20(r0)
+ lwz r1, 0x20(r0)
+ stw r1, 0x24(r0)
+ lwz r1, 0x24(r0)
+ lis r3, 0x0e80
+ ori r3, r3, 0
+ stw r1, 4(r3)
+ lwz r1, 4(r3)
+
+ /* Done! */
+ /*--------------------------------------------------------------*/
+
+ blr
+
+#endif /* CONFIG_COGENT */
+
+/*
+ * This code initialises the MPC8260 processor core
+ * (conforms to PowerPC 603e spec)
+ * Note: expects original MSR contents to be in r5.
+ */
+
+ .globl init_8260_core
+init_8260_core:
+
+ /* Initialize machine status; enable machine check interrupt */
+ /*--------------------------------------------------------------*/
+
+ li r3, MSR_KERNEL /* Set ME and RI flags */
+ rlwimi r3, r5, 0, 25, 25 /* preserve IP bit set by HRCW */
+#ifdef DEBUG
+ rlwimi r3, r5, 0, 21, 22 /* debugger might set SE & BE bits */
+#endif
+ SYNC /* Some chip revs need this... */
+ mtmsr r3
+ SYNC
+ mtspr SRR1, r3 /* Make SRR1 match MSR */
+
+ /* Initialise the SYPCR early, and reset the watchdog (if req) */
+ /*--------------------------------------------------------------*/
+
+ lis r3, (CFG_IMMR+IM_REGBASE)@h
+#if !defined(CONFIG_COGENT)
+ lis r4, CFG_SYPCR@h
+ ori r4, r4, CFG_SYPCR@l
+ stw r4, IM_SYPCR@l(r3)
+#endif /* !CONFIG_COGENT */
+#if defined(CONFIG_WATCHDOG)
+ li r4, 21868 /* = 0x556c */
+ sth r4, IM_SWSR@l(r3)
+ li r4, -21959 /* = 0xaa39 */
+ sth r4, IM_SWSR@l(r3)
+#endif /* CONFIG_WATCHDOG */
+
+ /* Initialize the Hardware Implementation-dependent Registers */
+ /* HID0 also contains cache control */
+ /*--------------------------------------------------------------*/
+
+ lis r3, CFG_HID0_INIT@h
+ ori r3, r3, CFG_HID0_INIT@l
+ SYNC
+ mtspr HID0, r3
+
+ lis r3, CFG_HID0_FINAL@h
+ ori r3, r3, CFG_HID0_FINAL@l
+ SYNC
+ mtspr HID0, r3
+
+ lis r3, CFG_HID2@h
+ ori r3, r3, CFG_HID2@l
+ mtspr HID2, r3
+
+ /* clear all BAT's */
+ /*--------------------------------------------------------------*/
+
+ li r0, 0
+ mtspr DBAT0U, r0
+ mtspr DBAT0L, r0
+ mtspr DBAT1U, r0
+ mtspr DBAT1L, r0
+ mtspr DBAT2U, r0
+ mtspr DBAT2L, r0
+ mtspr DBAT3U, r0
+ mtspr DBAT3L, r0
+ mtspr IBAT0U, r0
+ mtspr IBAT0L, r0
+ mtspr IBAT1U, r0
+ mtspr IBAT1L, r0
+ mtspr IBAT2U, r0
+ mtspr IBAT2L, r0
+ mtspr IBAT3U, r0
+ mtspr IBAT3L, r0
+ SYNC
+
+ /* invalidate all tlb's */
+ /* */
+ /* From the 603e User Manual: "The 603e provides the ability to */
+ /* invalidate a TLB entry. The TLB Invalidate Entry (tlbie) */
+ /* instruction invalidates the TLB entry indexed by the EA, and */
+ /* operates on both the instruction and data TLBs simultaneously*/
+ /* invalidating four TLB entries (both sets in each TLB). The */
+ /* index corresponds to bits 15-19 of the EA. To invalidate all */
+ /* entries within both TLBs, 32 tlbie instructions should be */
+ /* issued, incrementing this field by one each time." */
+ /* */
+ /* "Note that the tlbia instruction is not implemented on the */
+ /* 603e." */
+ /* */
+ /* bits 15-19 correspond to addresses 0x00000000 to 0x0001F000 */
+ /* incrementing by 0x1000 each time. The code below is sort of */
+ /* based on code in "flush_tlbs" from arch/ppc/kernel/head.S */
+ /* */
+ /*--------------------------------------------------------------*/
+
+ li r3, 32
+ mtctr r3
+ li r3, 0
+1: tlbie r3
+ addi r3, r3, 0x1000
+ bdnz 1b
+ SYNC
+
+ /* Done! */
+ /*--------------------------------------------------------------*/
+
+ blr
+
+#ifdef DEBUG
+
+/*
+ * initialise things related to debugging.
+ *
+ * must be called after the global offset table (GOT) is initialised
+ * (GET_GOT) and after cpu_init_f() has executed.
+ */
+
+ .globl init_debug
+init_debug:
+
+ lis r3, (CFG_IMMR+IM_REGBASE)@h
+
+ /* Quick and dirty hack to enable the RAM and copy the */
+ /* vectors so that we can take exceptions. */
+ /*--------------------------------------------------------------*/
+ /* write Memory Refresh Prescaler */
+ li r4, CFG_MPTPR
+ sth r4, IM_MPTPR@l(r3)
+ /* write 60x Refresh Timer */
+ li r4, CFG_PSRT
+ stb r4, IM_PSRT@l(r3)
+ /* init the 60x SDRAM Mode Register */
+ lis r4, (CFG_PSDMR|PSDMR_OP_NORM)@h
+ ori r4, r4, (CFG_PSDMR|PSDMR_OP_NORM)@l
+ stw r4, IM_PSDMR@l(r3)
+ /* write Precharge All Banks command */
+ lis r4, (CFG_PSDMR|PSDMR_OP_PREA)@h
+ ori r4, r4, (CFG_PSDMR|PSDMR_OP_PREA)@l
+ stw r4, IM_PSDMR@l(r3)
+ stb r0, 0(0)
+ /* write eight CBR Refresh commands */
+ lis r4, (CFG_PSDMR|PSDMR_OP_CBRR)@h
+ ori r4, r4, (CFG_PSDMR|PSDMR_OP_CBRR)@l
+ stw r4, IM_PSDMR@l(r3)
+ stb r0, 0(0)
+ stb r0, 0(0)
+ stb r0, 0(0)
+ stb r0, 0(0)
+ stb r0, 0(0)
+ stb r0, 0(0)
+ stb r0, 0(0)
+ stb r0, 0(0)
+ /* write Mode Register Write command */
+ lis r4, (CFG_PSDMR|PSDMR_OP_MRW)@h
+ ori r4, r4, (CFG_PSDMR|PSDMR_OP_MRW)@l
+ stw r4, IM_PSDMR@l(r3)
+ stb r0, 0(0)
+ /* write Normal Operation command and enable Refresh */
+ lis r4, (CFG_PSDMR|PSDMR_OP_NORM|PSDMR_RFEN)@h
+ ori r4, r4, (CFG_PSDMR|PSDMR_OP_NORM|PSDMR_RFEN)@l
+ stw r4, IM_PSDMR@l(r3)
+ stb r0, 0(0)
+ /* RAM should now be operational */
+
+#define VEC_WRD_CNT ((_end_of_vectors - _start + EXC_OFF_SYS_RESET) / 4)
+
+ lwz r3, GOT(_end_of_vectors)
+ rlwinm r4, r3, 0, 18, 31 /* _end_of_vectors & 0x3FFF */
+ lis r5, VEC_WRD_CNT@h
+ ori r5, r5, VEC_WRD_CNT@l
+ mtctr r5
+1:
+ lwzu r5, -4(r3)
+ stwu r5, -4(r4)
+ bdnz 1b
+
+ /* Load the Instruction Address Breakpoint Register (IABR). */
+ /* */
+ /* The address to load is stored in the first word of dual port */
+ /* ram and should be preserved while the power is on, so you */
+ /* can plug addresses into that location then reset the cpu and */
+ /* this code will load that address into the IABR after the */
+ /* reset. */
+ /* */
+ /* When the program counter matches the contents of the IABR, */
+ /* an exception is generated (before the instruction at that */
+ /* location completes). The vector for this exception is 0x1300 */
+ /*--------------------------------------------------------------*/
+ lis r3, CFG_IMMR@h
+ lwz r3, 0(r3)
+ mtspr IABR, r3
+
+ /* Set the entire dual port RAM (where the initial stack */
+ /* resides) to a known value - makes it easier to see where */
+ /* the stack has been written */
+ /*--------------------------------------------------------------*/
+ lis r3, (CFG_IMMR + CFG_INIT_SP_OFFSET)@h
+ ori r3, r3, (CFG_IMMR + CFG_INIT_SP_OFFSET)@l
+ li r4, ((CFG_INIT_SP_OFFSET - 4) / 4)
+ mtctr r4
+ lis r4, 0xdeadbeaf@h
+ ori r4, r4, 0xdeadbeaf@l
+1:
+ stwu r4, -4(r3)
+ bdnz 1b
+
+ /* Done! */
+ /*--------------------------------------------------------------*/
+
+ blr
+#endif
+
+/* Cache functions.
+ *
+ * Note: requires that all cache bits in
+ * HID0 are in the low half word.
+ */
+ .globl icache_enable
+icache_enable:
+ mfspr r3, HID0
+ ori r3, r3, HID0_ICE
+ lis r4, 0
+ ori r4, r4, HID0_ILOCK
+ andc r3, r3, r4
+ ori r4, r3, HID0_ICFI
+ isync
+ mtspr HID0, r4 /* sets enable and invalidate, clears lock */
+ isync
+ mtspr HID0, r3 /* clears invalidate */
+ blr
+
+ .globl icache_disable
+icache_disable:
+ mfspr r3, HID0
+ lis r4, 0
+ ori r4, r4, HID0_ICE|HID0_ILOCK
+ andc r3, r3, r4
+ ori r4, r3, HID0_ICFI
+ isync
+ mtspr HID0, r4 /* sets invalidate, clears enable and lock */
+ isync
+ mtspr HID0, r3 /* clears invalidate */
+ blr
+
+ .globl icache_status
+icache_status:
+ mfspr r3, HID0
+ rlwinm r3, r3, HID0_ICE_BITPOS + 1, 31, 31
+ blr
+
+ .globl dcache_enable
+dcache_enable:
+ mfspr r3, HID0
+ ori r3, r3, HID0_DCE
+ lis r4, 0
+ ori r4, r4, HID0_DLOCK
+ andc r3, r3, r4
+ ori r4, r3, HID0_DCI
+ sync
+ mtspr HID0, r4 /* sets enable and invalidate, clears lock */
+ sync
+ mtspr HID0, r3 /* clears invalidate */
+ blr
+
+ .globl dcache_disable
+dcache_disable:
+ mfspr r3, HID0
+ lis r4, 0
+ ori r4, r4, HID0_DCE|HID0_DLOCK
+ andc r3, r3, r4
+ ori r4, r3, HID0_DCI
+ sync
+ mtspr HID0, r4 /* sets invalidate, clears enable and lock */
+ sync
+ mtspr HID0, r3 /* clears invalidate */
+ blr
+
+ .globl dcache_status
+dcache_status:
+ mfspr r3, HID0
+ rlwinm r3, r3, HID0_DCE_BITPOS + 1, 31, 31
+ blr
+
+ .globl get_pvr
+get_pvr:
+ mfspr r3, PVR
+ blr
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * r3 = dest
+ * r4 = src
+ * r5 = length in bytes
+ * r6 = cachelinesize
+ */
+ .globl relocate_code
+relocate_code:
+ mr r1, r3 /* Set new stack pointer */
+ mr r9, r4 /* Save copy of Global Data pointer */
+ mr r10, r5 /* Save copy of Destination Address */
+
+ mr r3, r5 /* Destination Address */
+ lis r4, CFG_MONITOR_BASE@h /* Source Address */
+ ori r4, r4, CFG_MONITOR_BASE@l
+ lis r5, CFG_MONITOR_LEN@h /* Length in Bytes */
+ ori r5, r5, CFG_MONITOR_LEN@l
+ li r6, CFG_CACHELINE_SIZE /* Cache Line Size */
+
+ /*
+ * Fix GOT pointer:
+ *
+ * New GOT-PTR = (old GOT-PTR - CFG_MONITOR_BASE) + Destination Address
+ *
+ * Offset:
+ */
+ sub r15, r10, r4
+
+ /* First our own GOT */
+ add r14, r14, r15
+ /* then the one used by the C code */
+ add r30, r30, r15
+
+ /*
+ * Now relocate code
+ */
+
+ cmplw cr1,r3,r4
+ addi r0,r5,3
+ srwi. r0,r0,2
+ beq cr1,4f /* In place copy is not necessary */
+ beq 7f /* Protect against 0 count */
+ mtctr r0
+ bge cr1,2f
+
+ la r8,-4(r4)
+ la r7,-4(r3)
+1: lwzu r0,4(r8)
+ stwu r0,4(r7)
+ bdnz 1b
+ b 4f
+
+2: slwi r0,r0,2
+ add r8,r4,r0
+ add r7,r3,r0
+3: lwzu r0,-4(r8)
+ stwu r0,-4(r7)
+ bdnz 3b
+
+/*
+ * Now flush the cache: note that we must start from a cache aligned
+ * address. Otherwise we might miss one cache line.
+ */
+4: cmpwi r6,0
+ add r5,r3,r5
+ beq 7f /* Always flush prefetch queue in any case */
+ subi r0,r6,1
+ andc r3,r3,r0
+ mfspr r7,HID0 /* don't do dcbst if dcache is disabled */
+ rlwinm r7,r7,HID0_DCE_BITPOS+1,31,31
+ cmpwi r7,0
+ beq 9f
+ mr r4,r3
+5: dcbst 0,r4
+ add r4,r4,r6
+ cmplw r4,r5
+ blt 5b
+ sync /* Wait for all dcbst to complete on bus */
+9: mfspr r7,HID0 /* don't do icbi if icache is disabled */
+ rlwinm r7,r7,HID0_ICE_BITPOS+1,31,31
+ cmpwi r7,0
+ beq 7f
+ mr r4,r3
+6: icbi 0,r4
+ add r4,r4,r6
+ cmplw r4,r5
+ blt 6b
+7: sync /* Wait for all icbi to complete on bus */
+ isync
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+
+ addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
+ mtlr r0
+ blr
+
+in_ram:
+
+ /*
+ * Relocation Function, r14 point to got2+0x8000
+ *
+ * Adjust got2 pointers, no need to check for 0, this code
+ * already puts a few entries in the table.
+ */
+ li r0,__got2_entries@sectoff@l
+ la r3,GOT(_GOT2_TABLE_)
+ lwz r11,GOT(_GOT2_TABLE_)
+ mtctr r0
+ sub r11,r3,r11
+ addi r3,r3,-4
+1: lwzu r0,4(r3)
+ add r0,r0,r11
+ stw r0,0(r3)
+ bdnz 1b
+
+ /*
+ * Now adjust the fixups and the pointers to the fixups
+ * in case we need to move ourselves again.
+ */
+2: li r0,__fixup_entries@sectoff@l
+ lwz r3,GOT(_FIXUP_TABLE_)
+ cmpwi r0,0
+ mtctr r0
+ addi r3,r3,-4
+ beq 4f
+3: lwzu r4,4(r3)
+ lwzux r0,r4,r11
+ add r0,r0,r11
+ stw r10,0(r3)
+ stw r0,0(r4)
+ bdnz 3b
+4:
+clear_bss:
+ /*
+ * Now clear BSS segment
+ */
+ lwz r3,GOT(.bss)
+#if defined(CONFIG_HYMOD)
+ /*
+ * For HYMOD - the environment is the very last item in flash.
+ * The real .bss stops just before environment starts, so only
+ * clear up to that point.
+ *
+ * taken from mods for FADS board
+ */
+ lwz r4,GOT(environment)
+#else
+ lwz r4,GOT(_end)
+#endif
+
+ cmplw 0, r3, r4
+ beq 6f
+
+ li r0, 0
+5:
+ stw r0, 0(r3)
+ addi r3, r3, 4
+ cmplw 0, r3, r4
+ bne 5b
+6:
+
+ mr r3, r9 /* Global Data pointer */
+ mr r4, r10 /* Destination Address */
+ bl board_init_r
+
+ /* Problems accessing "end" in C, so do it here */
+ .globl get_endaddr
+get_endaddr:
+ lwz r3,GOT(_end)
+ blr
+
+ /*
+ * Copy exception vector code to low memory
+ *
+ * r3: dest_addr
+ * r7: source address, r8: end address, r9: target address
+ */
+ .globl trap_init
+trap_init:
+ lwz r7, GOT(_start)
+ lwz r8, GOT(_end_of_vectors)
+
+ rlwinm r9, r7, 0, 18, 31 /* _start & 0x3FFF */
+
+ cmplw 0, r7, r8
+ bgelr /* return if r7>=r8 - just in case */
+
+ mflr r4 /* save link register */
+1:
+ lwz r0, 0(r7)
+ stw r0, 0(r9)
+ addi r7, r7, 4
+ addi r9, r9, 4
+ cmplw 0, r7, r8
+ bne 1b
+
+ /*
+ * relocate `hdlr' and `int_return' entries
+ */
+ li r7, .L_MachineCheck - _start + EXC_OFF_SYS_RESET
+ li r8, Alignment - _start + EXC_OFF_SYS_RESET
+2:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 2b
+
+ li r7, .L_Alignment - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_ProgramCheck - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_FPUnavailable - _start + EXC_OFF_SYS_RESET
+ li r8, SystemCall - _start + EXC_OFF_SYS_RESET
+3:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 3b
+
+ li r7, .L_SingleStep - _start + EXC_OFF_SYS_RESET
+ li r8, _end_of_vectors - _start + EXC_OFF_SYS_RESET
+4:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 4b
+
+ mfmsr r3 /* now that the vectors have */
+ lis r7, MSR_IP@h /* relocated into low memory */
+ ori r7, r7, MSR_IP@l /* MSR[IP] can be turned off */
+ andc r3, r3, r7 /* (if it was on) */
+ SYNC /* Some chip revs need this... */
+ mtmsr r3
+ SYNC
+
+ mtlr r4 /* restore link register */
+ blr
+
+ /*
+ * Function: relocate entries for one exception vector
+ */
+trap_reloc:
+ lwz r0, 0(r7) /* hdlr ... */
+ add r0, r0, r3 /* ... += dest_addr */
+ stw r0, 0(r7)
+
+ lwz r0, 4(r7) /* int_return ... */
+ add r0, r0, r3 /* ... += dest_addr */
+ stw r0, 4(r7)
+
+ blr
projects / oweals / u-boot.git / commitdiff