2 * (C) Copyright 2002-2006
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Marius Groeger <mgroeger@sysgo.de>
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 * To match the U-Boot user interface on ARM platforms to the U-Boot
30 * standard (as on PPC platforms), some messages with debug character
31 * are removed from the default U-Boot build.
33 * Define DEBUG here if you want additional info as shown below
34 * printed upon startup:
36 * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
44 #include <stdio_dev.h>
45 #include <timestamp.h>
50 #include <onenand_uboot.h>
53 #ifdef CONFIG_DRIVER_SMC91111
54 #include "../drivers/net/smc91111.h"
56 #ifdef CONFIG_DRIVER_LAN91C96
57 #include "../drivers/net/lan91c96.h"
60 DECLARE_GLOBAL_DATA_PTR;
62 ulong monitor_flash_len;
64 #ifdef CONFIG_HAS_DATAFLASH
65 extern int AT91F_DataflashInit(void);
66 extern void dataflash_print_info(void);
69 #ifndef CONFIG_IDENT_STRING
70 #define CONFIG_IDENT_STRING ""
73 const char version_string[] =
74 U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING;
76 #ifdef CONFIG_DRIVER_RTL8019
77 extern void rtl8019_get_enetaddr (uchar * addr);
80 #if defined(CONFIG_HARD_I2C) || \
81 defined(CONFIG_SOFT_I2C)
86 /************************************************************************
87 * Coloured LED functionality
88 ************************************************************************
89 * May be supplied by boards if desired
91 void inline __coloured_LED_init (void) {}
92 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
93 void inline __red_LED_on (void) {}
94 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
95 void inline __red_LED_off(void) {}
96 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
97 void inline __green_LED_on(void) {}
98 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
99 void inline __green_LED_off(void) {}
100 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
101 void inline __yellow_LED_on(void) {}
102 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
103 void inline __yellow_LED_off(void) {}
104 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
105 void inline __blue_LED_on(void) {}
106 void inline blue_LED_on(void)__attribute__((weak, alias("__blue_LED_on")));
107 void inline __blue_LED_off(void) {}
108 void inline blue_LED_off(void)__attribute__((weak, alias("__blue_LED_off")));
110 /************************************************************************
112 ************************************************************************
113 * Some of this code should be moved into the core functions,
114 * or dropped completely,
115 * but let's get it working (again) first...
118 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
119 #define CONFIG_BAUDRATE 115200
121 static int init_baudrate (void)
123 char tmp[64]; /* long enough for environment variables */
124 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
125 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
126 ? (int) simple_strtoul (tmp, NULL, 10)
132 static int display_banner (void)
134 printf ("\n\n%s\n\n", version_string);
135 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
136 _armboot_start, _bss_start, _bss_end);
137 #ifdef CONFIG_MODEM_SUPPORT
138 debug ("Modem Support enabled\n");
140 #ifdef CONFIG_USE_IRQ
141 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
142 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
149 * WARNING: this code looks "cleaner" than the PowerPC version, but
150 * has the disadvantage that you either get nothing, or everything.
151 * On PowerPC, you might see "DRAM: " before the system hangs - which
152 * gives a simple yet clear indication which part of the
153 * initialization if failing.
155 static int display_dram_config (void)
160 puts ("RAM Configuration:\n");
162 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
163 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
164 print_size (gd->bd->bi_dram[i].size, "\n");
169 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
170 size += gd->bd->bi_dram[i].size;
173 print_size(size, "\n");
179 #ifndef CONFIG_SYS_NO_FLASH
180 static void display_flash_config (ulong size)
183 print_size (size, "\n");
185 #endif /* CONFIG_SYS_NO_FLASH */
187 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
188 static int init_func_i2c (void)
191 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
197 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
199 static int arm_pci_init(void)
204 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
207 * Breathe some life into the board...
209 * Initialize a serial port as console, and carry out some hardware
212 * The first part of initialization is running from Flash memory;
213 * its main purpose is to initialize the RAM so that we
214 * can relocate the monitor code to RAM.
218 * All attempts to come up with a "common" initialization sequence
219 * that works for all boards and architectures failed: some of the
220 * requirements are just _too_ different. To get rid of the resulting
221 * mess of board dependent #ifdef'ed code we now make the whole
222 * initialization sequence configurable to the user.
224 * The requirements for any new initalization function is simple: it
225 * receives a pointer to the "global data" structure as it's only
226 * argument, and returns an integer return code, where 0 means
227 * "continue" and != 0 means "fatal error, hang the system".
229 typedef int (init_fnc_t) (void);
231 int print_cpuinfo (void);
233 init_fnc_t *init_sequence[] = {
234 #if defined(CONFIG_ARCH_CPU_INIT)
235 arch_cpu_init, /* basic arch cpu dependent setup */
237 board_init, /* basic board dependent setup */
238 #if defined(CONFIG_USE_IRQ)
239 interrupt_init, /* set up exceptions */
241 timer_init, /* initialize timer */
242 env_init, /* initialize environment */
243 init_baudrate, /* initialze baudrate settings */
244 serial_init, /* serial communications setup */
245 console_init_f, /* stage 1 init of console */
246 display_banner, /* say that we are here */
247 #if defined(CONFIG_DISPLAY_CPUINFO)
248 print_cpuinfo, /* display cpu info (and speed) */
250 #if defined(CONFIG_DISPLAY_BOARDINFO)
251 checkboard, /* display board info */
253 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
256 dram_init, /* configure available RAM banks */
257 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
264 void start_armboot (void)
266 init_fnc_t **init_fnc_ptr;
268 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
272 /* Pointer is writable since we allocated a register for it */
273 gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
274 /* compiler optimization barrier needed for GCC >= 3.4 */
275 __asm__ __volatile__("": : :"memory");
277 memset ((void*)gd, 0, sizeof (gd_t));
278 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
279 memset (gd->bd, 0, sizeof (bd_t));
281 gd->flags |= GD_FLG_RELOC;
283 monitor_flash_len = _bss_start - _armboot_start;
285 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
286 if ((*init_fnc_ptr)() != 0) {
291 /* armboot_start is defined in the board-specific linker script */
292 mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN,
293 CONFIG_SYS_MALLOC_LEN);
295 #ifndef CONFIG_SYS_NO_FLASH
296 /* configure available FLASH banks */
297 display_flash_config (flash_init ());
298 #endif /* CONFIG_SYS_NO_FLASH */
302 # define PAGE_SIZE 4096
305 * reserve memory for VFD display (always full pages)
307 /* bss_end is defined in the board-specific linker script */
308 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
311 #endif /* CONFIG_VFD */
314 /* board init may have inited fb_base */
317 # define PAGE_SIZE 4096
320 * reserve memory for LCD display (always full pages)
322 /* bss_end is defined in the board-specific linker script */
323 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
327 #endif /* CONFIG_LCD */
329 #if defined(CONFIG_CMD_NAND)
331 nand_init(); /* go init the NAND */
334 #if defined(CONFIG_CMD_ONENAND)
338 #ifdef CONFIG_HAS_DATAFLASH
339 AT91F_DataflashInit();
340 dataflash_print_info();
343 /* initialize environment */
347 /* must do this after the framebuffer is allocated */
349 #endif /* CONFIG_VFD */
351 #ifdef CONFIG_SERIAL_MULTI
356 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
358 stdio_init (); /* get the devices list going. */
362 #if defined(CONFIG_API)
367 console_init_r (); /* fully init console as a device */
369 #if defined(CONFIG_ARCH_MISC_INIT)
370 /* miscellaneous arch dependent initialisations */
373 #if defined(CONFIG_MISC_INIT_R)
374 /* miscellaneous platform dependent initialisations */
378 /* enable exceptions */
379 enable_interrupts ();
381 /* Perform network card initialisation if necessary */
382 #ifdef CONFIG_DRIVER_TI_EMAC
383 /* XXX: this needs to be moved to board init */
384 extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
385 if (getenv ("ethaddr")) {
387 eth_getenv_enetaddr("ethaddr", enetaddr);
388 davinci_eth_set_mac_addr(enetaddr);
392 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
393 /* XXX: this needs to be moved to board init */
394 if (getenv ("ethaddr")) {
396 eth_getenv_enetaddr("ethaddr", enetaddr);
397 smc_set_mac_addr(enetaddr);
399 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
401 /* Initialize from environment */
402 if ((s = getenv ("loadaddr")) != NULL) {
403 load_addr = simple_strtoul (s, NULL, 16);
405 #if defined(CONFIG_CMD_NET)
406 if ((s = getenv ("bootfile")) != NULL) {
407 copy_filename (BootFile, s, sizeof (BootFile));
411 #ifdef BOARD_LATE_INIT
415 #ifdef CONFIG_GENERIC_MMC
417 mmc_initialize (gd->bd);
420 #if defined(CONFIG_CMD_NET)
421 #if defined(CONFIG_NET_MULTI)
424 eth_initialize(gd->bd);
425 #if defined(CONFIG_RESET_PHY_R)
426 debug ("Reset Ethernet PHY\n");
430 /* main_loop() can return to retry autoboot, if so just run it again. */
435 /* NOTREACHED - no way out of command loop except booting */
440 puts ("### ERROR ### Please RESET the board ###\n");