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 * Begin and End of memory area for malloc(), and current "brk"
88 static ulong mem_malloc_start = 0;
89 static ulong mem_malloc_end = 0;
90 static ulong mem_malloc_brk = 0;
93 void mem_malloc_init (ulong dest_addr)
95 mem_malloc_start = dest_addr;
96 mem_malloc_end = dest_addr + CONFIG_SYS_MALLOC_LEN;
97 mem_malloc_brk = mem_malloc_start;
99 memset ((void *) mem_malloc_start, 0,
100 mem_malloc_end - mem_malloc_start);
103 void *sbrk (ptrdiff_t increment)
105 ulong old = mem_malloc_brk;
106 ulong new = old + increment;
108 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
111 mem_malloc_brk = new;
113 return ((void *) old);
117 /************************************************************************
118 * Coloured LED functionality
119 ************************************************************************
120 * May be supplied by boards if desired
122 void inline __coloured_LED_init (void) {}
123 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
124 void inline __red_LED_on (void) {}
125 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
126 void inline __red_LED_off(void) {}
127 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
128 void inline __green_LED_on(void) {}
129 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
130 void inline __green_LED_off(void) {}
131 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
132 void inline __yellow_LED_on(void) {}
133 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
134 void inline __yellow_LED_off(void) {}
135 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
136 void inline __blue_LED_on(void) {}
137 void inline blue_LED_on(void)__attribute__((weak, alias("__blue_LED_on")));
138 void inline __blue_LED_off(void) {}
139 void inline blue_LED_off(void)__attribute__((weak, alias("__blue_LED_off")));
141 /************************************************************************
143 ************************************************************************
144 * Some of this code should be moved into the core functions,
145 * or dropped completely,
146 * but let's get it working (again) first...
149 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
150 #define CONFIG_BAUDRATE 115200
152 static int init_baudrate (void)
154 char tmp[64]; /* long enough for environment variables */
155 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
156 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
157 ? (int) simple_strtoul (tmp, NULL, 10)
163 static int display_banner (void)
165 printf ("\n\n%s\n\n", version_string);
166 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
167 _armboot_start, _bss_start, _bss_end);
168 #ifdef CONFIG_MODEM_SUPPORT
169 debug ("Modem Support enabled\n");
171 #ifdef CONFIG_USE_IRQ
172 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
173 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
180 * WARNING: this code looks "cleaner" than the PowerPC version, but
181 * has the disadvantage that you either get nothing, or everything.
182 * On PowerPC, you might see "DRAM: " before the system hangs - which
183 * gives a simple yet clear indication which part of the
184 * initialization if failing.
186 static int display_dram_config (void)
191 puts ("RAM Configuration:\n");
193 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
194 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
195 print_size (gd->bd->bi_dram[i].size, "\n");
200 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
201 size += gd->bd->bi_dram[i].size;
204 print_size(size, "\n");
210 #ifndef CONFIG_SYS_NO_FLASH
211 static void display_flash_config (ulong size)
214 print_size (size, "\n");
216 #endif /* CONFIG_SYS_NO_FLASH */
218 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
219 static int init_func_i2c (void)
222 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
228 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
230 static int arm_pci_init(void)
235 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
238 * Breathe some life into the board...
240 * Initialize a serial port as console, and carry out some hardware
243 * The first part of initialization is running from Flash memory;
244 * its main purpose is to initialize the RAM so that we
245 * can relocate the monitor code to RAM.
249 * All attempts to come up with a "common" initialization sequence
250 * that works for all boards and architectures failed: some of the
251 * requirements are just _too_ different. To get rid of the resulting
252 * mess of board dependent #ifdef'ed code we now make the whole
253 * initialization sequence configurable to the user.
255 * The requirements for any new initalization function is simple: it
256 * receives a pointer to the "global data" structure as it's only
257 * argument, and returns an integer return code, where 0 means
258 * "continue" and != 0 means "fatal error, hang the system".
260 typedef int (init_fnc_t) (void);
262 int print_cpuinfo (void);
264 init_fnc_t *init_sequence[] = {
265 #if defined(CONFIG_ARCH_CPU_INIT)
266 arch_cpu_init, /* basic arch cpu dependent setup */
268 board_init, /* basic board dependent setup */
269 #if defined(CONFIG_USE_IRQ)
270 interrupt_init, /* set up exceptions */
272 timer_init, /* initialize timer */
273 env_init, /* initialize environment */
274 init_baudrate, /* initialze baudrate settings */
275 serial_init, /* serial communications setup */
276 console_init_f, /* stage 1 init of console */
277 display_banner, /* say that we are here */
278 #if defined(CONFIG_DISPLAY_CPUINFO)
279 print_cpuinfo, /* display cpu info (and speed) */
281 #if defined(CONFIG_DISPLAY_BOARDINFO)
282 checkboard, /* display board info */
284 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
287 dram_init, /* configure available RAM banks */
288 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
295 void start_armboot (void)
297 init_fnc_t **init_fnc_ptr;
299 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
303 /* Pointer is writable since we allocated a register for it */
304 gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
305 /* compiler optimization barrier needed for GCC >= 3.4 */
306 __asm__ __volatile__("": : :"memory");
308 memset ((void*)gd, 0, sizeof (gd_t));
309 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
310 memset (gd->bd, 0, sizeof (bd_t));
312 gd->flags |= GD_FLG_RELOC;
314 monitor_flash_len = _bss_start - _armboot_start;
316 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
317 if ((*init_fnc_ptr)() != 0) {
322 /* armboot_start is defined in the board-specific linker script */
323 mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN);
325 #ifndef CONFIG_SYS_NO_FLASH
326 /* configure available FLASH banks */
327 display_flash_config (flash_init ());
328 #endif /* CONFIG_SYS_NO_FLASH */
332 # define PAGE_SIZE 4096
335 * reserve memory for VFD display (always full pages)
337 /* bss_end is defined in the board-specific linker script */
338 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
341 #endif /* CONFIG_VFD */
344 /* board init may have inited fb_base */
347 # define PAGE_SIZE 4096
350 * reserve memory for LCD display (always full pages)
352 /* bss_end is defined in the board-specific linker script */
353 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
357 #endif /* CONFIG_LCD */
359 #if defined(CONFIG_CMD_NAND)
361 nand_init(); /* go init the NAND */
364 #if defined(CONFIG_CMD_ONENAND)
368 #ifdef CONFIG_HAS_DATAFLASH
369 AT91F_DataflashInit();
370 dataflash_print_info();
373 /* initialize environment */
377 /* must do this after the framebuffer is allocated */
379 #endif /* CONFIG_VFD */
381 #ifdef CONFIG_SERIAL_MULTI
386 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
388 stdio_init (); /* get the devices list going. */
392 #if defined(CONFIG_API)
397 console_init_r (); /* fully init console as a device */
399 #if defined(CONFIG_ARCH_MISC_INIT)
400 /* miscellaneous arch dependent initialisations */
403 #if defined(CONFIG_MISC_INIT_R)
404 /* miscellaneous platform dependent initialisations */
408 /* enable exceptions */
409 enable_interrupts ();
411 /* Perform network card initialisation if necessary */
412 #ifdef CONFIG_DRIVER_TI_EMAC
413 /* XXX: this needs to be moved to board init */
414 extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
415 if (getenv ("ethaddr")) {
417 eth_getenv_enetaddr("ethaddr", enetaddr);
418 davinci_eth_set_mac_addr(enetaddr);
422 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
423 /* XXX: this needs to be moved to board init */
424 if (getenv ("ethaddr")) {
426 eth_getenv_enetaddr("ethaddr", enetaddr);
427 smc_set_mac_addr(enetaddr);
429 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
431 /* Initialize from environment */
432 if ((s = getenv ("loadaddr")) != NULL) {
433 load_addr = simple_strtoul (s, NULL, 16);
435 #if defined(CONFIG_CMD_NET)
436 if ((s = getenv ("bootfile")) != NULL) {
437 copy_filename (BootFile, s, sizeof (BootFile));
441 #ifdef BOARD_LATE_INIT
445 #ifdef CONFIG_GENERIC_MMC
447 mmc_initialize (gd->bd);
450 #if defined(CONFIG_CMD_NET)
451 #if defined(CONFIG_NET_MULTI)
454 eth_initialize(gd->bd);
455 #if defined(CONFIG_RESET_PHY_R)
456 debug ("Reset Ethernet PHY\n");
460 /* main_loop() can return to retry autoboot, if so just run it again. */
465 /* NOTREACHED - no way out of command loop except booting */
470 puts ("### ERROR ### Please RESET the board ###\n");