+++ /dev/null
-/*
- * smc911x_eeprom.c - EEPROM interface to SMC911x parts.
- * Only tested on SMSC9118 though ...
- *
- * Copyright 2004-2009 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- *
- * Based on smc91111_eeprom.c which:
- * Heavily borrowed from the following peoples GPL'ed software:
- * - Wolfgang Denk, DENX Software Engineering, wd@denx.de
- * Das U-Boot
- * - Ladislav Michl ladis@linux-mips.org
- * A rejected patch on the U-Boot mailing list
- */
-
-#include <common.h>
-#include <console.h>
-#include <exports.h>
-#include <net.h>
-#include <linux/ctype.h>
-#include <linux/types.h>
-#include "../drivers/net/smc911x.h"
-
-#define DRIVERNAME "smc911x"
-
-#if defined (CONFIG_SMC911X_32_BIT) && \
- defined (CONFIG_SMC911X_16_BIT)
-#error "SMC911X: Only one of CONFIG_SMC911X_32_BIT and \
- CONFIG_SMC911X_16_BIT shall be set"
-#endif
-
-struct chip_id {
- u16 id;
- char *name;
-};
-
-static const struct chip_id chip_ids[] = {
- { CHIP_89218, "LAN89218" },
- { CHIP_9115, "LAN9115" },
- { CHIP_9116, "LAN9116" },
- { CHIP_9117, "LAN9117" },
- { CHIP_9118, "LAN9118" },
- { CHIP_9211, "LAN9211" },
- { CHIP_9215, "LAN9215" },
- { CHIP_9216, "LAN9216" },
- { CHIP_9217, "LAN9217" },
- { CHIP_9218, "LAN9218" },
- { CHIP_9220, "LAN9220" },
- { CHIP_9221, "LAN9221" },
- { 0, NULL },
-};
-
-#if defined (CONFIG_SMC911X_32_BIT)
-static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
-{
- return *(volatile u32*)(dev->iobase + offset);
-}
-
-static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
-{
- *(volatile u32*)(dev->iobase + offset) = val;
-}
-#elif defined (CONFIG_SMC911X_16_BIT)
-static u32 smc911x_reg_read(struct eth_device *dev, u32 offset)
-{
- volatile u16 *addr_16 = (u16 *)(dev->iobase + offset);
- return (*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16);
-}
-static void smc911x_reg_write(struct eth_device *dev, u32 offset, u32 val)
-{
- *(volatile u16 *)(dev->iobase + offset) = (u16)val;
- *(volatile u16 *)(dev->iobase + offset + 2) = (u16)(val >> 16);
-}
-#else
-#error "SMC911X: undefined bus width"
-#endif /* CONFIG_SMC911X_16_BIT */
-
-static u32 smc911x_get_mac_csr(struct eth_device *dev, u8 reg)
-{
- while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
- ;
- smc911x_reg_write(dev, MAC_CSR_CMD,
- MAC_CSR_CMD_CSR_BUSY | MAC_CSR_CMD_R_NOT_W | reg);
- while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
- ;
-
- return smc911x_reg_read(dev, MAC_CSR_DATA);
-}
-
-static void smc911x_set_mac_csr(struct eth_device *dev, u8 reg, u32 data)
-{
- while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
- ;
- smc911x_reg_write(dev, MAC_CSR_DATA, data);
- smc911x_reg_write(dev, MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
- while (smc911x_reg_read(dev, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
- ;
-}
-
-static int smc911x_detect_chip(struct eth_device *dev)
-{
- unsigned long val, i;
-
- val = smc911x_reg_read(dev, BYTE_TEST);
- if (val == 0xffffffff) {
- /* Special case -- no chip present */
- return -1;
- } else if (val != 0x87654321) {
- printf(DRIVERNAME ": Invalid chip endian 0x%08lx\n", val);
- return -1;
- }
-
- val = smc911x_reg_read(dev, ID_REV) >> 16;
- for (i = 0; chip_ids[i].id != 0; i++) {
- if (chip_ids[i].id == val) break;
- }
- if (!chip_ids[i].id) {
- printf(DRIVERNAME ": Unknown chip ID %04lx\n", val);
- return -1;
- }
-
- dev->priv = (void *)&chip_ids[i];
-
- return 0;
-}
-
-static void smc911x_reset(struct eth_device *dev)
-{
- int timeout;
-
- /*
- * Take out of PM setting first
- * Device is already wake up if PMT_CTRL_READY bit is set
- */
- if ((smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY) == 0) {
- /* Write to the bytetest will take out of powerdown */
- smc911x_reg_write(dev, BYTE_TEST, 0x0);
-
- timeout = 10;
-
- while (timeout-- &&
- !(smc911x_reg_read(dev, PMT_CTRL) & PMT_CTRL_READY))
- udelay(10);
- if (timeout < 0) {
- printf(DRIVERNAME
- ": timeout waiting for PM restore\n");
- return;
- }
- }
-
- /* Disable interrupts */
- smc911x_reg_write(dev, INT_EN, 0);
-
- smc911x_reg_write(dev, HW_CFG, HW_CFG_SRST);
-
- timeout = 1000;
- while (timeout-- && smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY)
- udelay(10);
-
- if (timeout < 0) {
- printf(DRIVERNAME ": reset timeout\n");
- return;
- }
-
- /* Reset the FIFO level and flow control settings */
- smc911x_set_mac_csr(dev, FLOW, FLOW_FCPT | FLOW_FCEN);
- smc911x_reg_write(dev, AFC_CFG, 0x0050287F);
-
- /* Set to LED outputs */
- smc911x_reg_write(dev, GPIO_CFG, 0x70070000);
-}
-
-/**
- * smsc_ctrlc - detect press of CTRL+C (common ctrlc() isnt exported!?)
- */
-static int smsc_ctrlc(void)
-{
- return (tstc() && getc() == 0x03);
-}
-
-/**
- * usage - dump usage information
- */
-static void usage(void)
-{
- puts(
- "MAC/EEPROM Commands:\n"
- " P : Print the MAC addresses\n"
- " D : Dump the EEPROM contents\n"
- " M : Dump the MAC contents\n"
- " C : Copy the MAC address from the EEPROM to the MAC\n"
- " W : Write a register in the EEPROM or in the MAC\n"
- " Q : Quit\n"
- "\n"
- "Some commands take arguments:\n"
- " W <E|M> <register> <value>\n"
- " E: EEPROM M: MAC\n"
- );
-}
-
-/**
- * dump_regs - dump the MAC registers
- *
- * Registers 0x00 - 0x50 are FIFOs. The 0x50+ are the control registers
- * and they're all 32bits long. 0xB8+ are reserved, so don't bother.
- */
-static void dump_regs(struct eth_device *dev)
-{
- u8 i, j = 0;
- for (i = 0x50; i < 0xB8; i += sizeof(u32))
- printf("%02x: 0x%08x %c", i,
- smc911x_reg_read(dev, i),
- (j++ % 2 ? '\n' : ' '));
-}
-
-/**
- * do_eeprom_cmd - handle eeprom communication
- */
-static int do_eeprom_cmd(struct eth_device *dev, int cmd, u8 reg)
-{
- if (smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY) {
- printf("eeprom_cmd: busy at start (E2P_CMD = 0x%08x)\n",
- smc911x_reg_read(dev, E2P_CMD));
- return -1;
- }
-
- smc911x_reg_write(dev, E2P_CMD, E2P_CMD_EPC_BUSY | cmd | reg);
-
- while (smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY)
- if (smsc_ctrlc()) {
- printf("eeprom_cmd: timeout (E2P_CMD = 0x%08x)\n",
- smc911x_reg_read(dev, E2P_CMD));
- return -1;
- }
-
- return 0;
-}
-
-/**
- * read_eeprom_reg - read specified register in EEPROM
- */
-static u8 read_eeprom_reg(struct eth_device *dev, u8 reg)
-{
- int ret = do_eeprom_cmd(dev, E2P_CMD_EPC_CMD_READ, reg);
- return (ret ? : smc911x_reg_read(dev, E2P_DATA));
-}
-
-/**
- * write_eeprom_reg - write specified value into specified register in EEPROM
- */
-static int write_eeprom_reg(struct eth_device *dev, u8 value, u8 reg)
-{
- int ret;
-
- /* enable erasing/writing */
- ret = do_eeprom_cmd(dev, E2P_CMD_EPC_CMD_EWEN, reg);
- if (ret)
- goto done;
-
- /* erase the eeprom reg */
- ret = do_eeprom_cmd(dev, E2P_CMD_EPC_CMD_ERASE, reg);
- if (ret)
- goto done;
-
- /* write the eeprom reg */
- smc911x_reg_write(dev, E2P_DATA, value);
- ret = do_eeprom_cmd(dev, E2P_CMD_EPC_CMD_WRITE, reg);
- if (ret)
- goto done;
-
- /* disable erasing/writing */
- ret = do_eeprom_cmd(dev, E2P_CMD_EPC_CMD_EWDS, reg);
-
- done:
- return ret;
-}
-
-/**
- * skip_space - find first non-whitespace in given pointer
- */
-static char *skip_space(char *buf)
-{
- while (isblank(buf[0]))
- ++buf;
- return buf;
-}
-
-/**
- * write_stuff - handle writing of MAC registers / eeprom
- */
-static void write_stuff(struct eth_device *dev, char *line)
-{
- char dest;
- char *endp;
- u8 reg;
- u32 value;
-
- /* Skip over the "W " part of the command */
- line = skip_space(line + 1);
-
- /* Figure out destination */
- switch (line[0]) {
- case 'E':
- case 'M':
- dest = line[0];
- break;
- default:
- invalid_usage:
- printf("ERROR: Invalid write usage\n");
- usage();
- return;
- }
-
- /* Get the register to write */
- line = skip_space(line + 1);
- reg = simple_strtoul(line, &endp, 16);
- if (line == endp)
- goto invalid_usage;
-
- /* Get the value to write */
- line = skip_space(endp);
- value = simple_strtoul(line, &endp, 16);
- if (line == endp)
- goto invalid_usage;
-
- /* Check for trailing cruft */
- line = skip_space(endp);
- if (line[0])
- goto invalid_usage;
-
- /* Finally, execute the command */
- if (dest == 'E') {
- printf("Writing EEPROM register %02x with %02x\n", reg, value);
- write_eeprom_reg(dev, value, reg);
- } else {
- printf("Writing MAC register %02x with %08x\n", reg, value);
- smc911x_reg_write(dev, reg, value);
- }
-}
-
-/**
- * copy_from_eeprom - copy MAC address in eeprom to address registers
- */
-static void copy_from_eeprom(struct eth_device *dev)
-{
- ulong addrl =
- read_eeprom_reg(dev, 0x01) |
- read_eeprom_reg(dev, 0x02) << 8 |
- read_eeprom_reg(dev, 0x03) << 16 |
- read_eeprom_reg(dev, 0x04) << 24;
- ulong addrh =
- read_eeprom_reg(dev, 0x05) |
- read_eeprom_reg(dev, 0x06) << 8;
- smc911x_set_mac_csr(dev, ADDRL, addrl);
- smc911x_set_mac_csr(dev, ADDRH, addrh);
- puts("EEPROM contents copied to MAC\n");
-}
-
-/**
- * print_macaddr - print MAC address registers and MAC address in eeprom
- */
-static void print_macaddr(struct eth_device *dev)
-{
- puts("Current MAC Address in MAC: ");
- ulong addrl = smc911x_get_mac_csr(dev, ADDRL);
- ulong addrh = smc911x_get_mac_csr(dev, ADDRH);
- printf("%02x:%02x:%02x:%02x:%02x:%02x\n",
- (u8)(addrl), (u8)(addrl >> 8), (u8)(addrl >> 16),
- (u8)(addrl >> 24), (u8)(addrh), (u8)(addrh >> 8));
-
- puts("Current MAC Address in EEPROM: ");
- int i;
- for (i = 1; i < 6; ++i)
- printf("%02x:", read_eeprom_reg(dev, i));
- printf("%02x\n", read_eeprom_reg(dev, i));
-}
-
-/**
- * dump_eeprom - dump the whole content of the EEPROM
- */
-static void dump_eeprom(struct eth_device *dev)
-{
- int i;
- puts("EEPROM:\n");
- for (i = 0; i < 7; ++i)
- printf("%02x: 0x%02x\n", i, read_eeprom_reg(dev, i));
-}
-
-/**
- * smc911x_init - get the MAC/EEPROM up and ready for use
- */
-static int smc911x_init(struct eth_device *dev)
-{
- /* See if there is anything there */
- if (smc911x_detect_chip(dev))
- return 1;
-
- smc911x_reset(dev);
-
- /* Make sure we set EEDIO/EECLK to the EEPROM */
- if (smc911x_reg_read(dev, GPIO_CFG) & GPIO_CFG_EEPR_EN) {
- while (smc911x_reg_read(dev, E2P_CMD) & E2P_CMD_EPC_BUSY)
- if (smsc_ctrlc()) {
- printf("init: timeout (E2P_CMD = 0x%08x)\n",
- smc911x_reg_read(dev, E2P_CMD));
- return 1;
- }
- smc911x_reg_write(dev, GPIO_CFG,
- smc911x_reg_read(dev, GPIO_CFG) & ~GPIO_CFG_EEPR_EN);
- }
-
- return 0;
-}
-
-/**
- * getline - consume a line of input and handle some escape sequences
- */
-static char *getline(void)
-{
- static char buffer[100];
- char c;
- size_t i;
-
- i = 0;
- while (1) {
- buffer[i] = '\0';
- while (!tstc())
- continue;
-
- c = getc();
- /* Convert to uppercase */
- if (c >= 'a' && c <= 'z')
- c -= ('a' - 'A');
-
- switch (c) {
- case '\r': /* Enter/Return key */
- case '\n':
- puts("\n");
- return buffer;
-
- case 0x03: /* ^C - break */
- return NULL;
-
- case 0x5F:
- case 0x08: /* ^H - backspace */
- case 0x7F: /* DEL - backspace */
- if (i) {
- puts("\b \b");
- i--;
- }
- break;
-
- default:
- /* Ignore control characters */
- if (c < 0x20)
- break;
- /* Queue up all other characters */
- buffer[i++] = c;
- printf("%c", c);
- break;
- }
- }
-}
-
-/**
- * smc911x_eeprom - our application's main() function
- */
-int smc911x_eeprom(int argc, char *const argv[])
-{
- /* Avoid initializing on stack as gcc likes to call memset() */
- struct eth_device dev;
- dev.iobase = CONFIG_SMC911X_BASE;
-
- /* Print the ABI version */
- app_startup(argv);
- if (XF_VERSION != get_version()) {
- printf("Expects ABI version %d\n", XF_VERSION);
- printf("Actual U-Boot ABI version %lu\n", get_version());
- printf("Can't run\n\n");
- return 1;
- }
-
- /* Initialize the MAC/EEPROM somewhat */
- puts("\n");
- if (smc911x_init(&dev))
- return 1;
-
- /* Dump helpful usage information */
- puts("\n");
- usage();
- puts("\n");
-
- while (1) {
- char *line;
-
- /* Send the prompt and wait for a line */
- puts("eeprom> ");
- line = getline();
-
- /* Got a ctrl+c */
- if (!line)
- return 0;
-
- /* Eat leading space */
- line = skip_space(line);
-
- /* Empty line, try again */
- if (!line[0])
- continue;
-
- /* Only accept 1 letter commands */
- if (line[0] && line[1] && !isblank(line[1]))
- goto unknown_cmd;
-
- /* Now parse the command */
- switch (line[0]) {
- case 'W': write_stuff(&dev, line); break;
- case 'D': dump_eeprom(&dev); break;
- case 'M': dump_regs(&dev); break;
- case 'C': copy_from_eeprom(&dev); break;
- case 'P': print_macaddr(&dev); break;
- unknown_cmd:
- default: puts("ERROR: Unknown command!\n\n");
- case '?':
- case 'H': usage(); break;
- case 'Q': return 0;
- }
- }
-}
projects / oweals / u-boot.git / commitdiff