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_BITBANGMII
57 #ifdef CONFIG_DRIVER_SMC91111
58 #include "../drivers/net/smc91111.h"
60 #ifdef CONFIG_DRIVER_LAN91C96
61 #include "../drivers/net/lan91c96.h"
64 DECLARE_GLOBAL_DATA_PTR;
66 ulong monitor_flash_len;
68 #ifdef CONFIG_HAS_DATAFLASH
69 extern int AT91F_DataflashInit(void);
70 extern void dataflash_print_info(void);
73 #ifndef CONFIG_IDENT_STRING
74 #define CONFIG_IDENT_STRING ""
77 const char version_string[] =
78 U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING;
80 #ifdef CONFIG_DRIVER_RTL8019
81 extern void rtl8019_get_enetaddr (uchar * addr);
84 #if defined(CONFIG_HARD_I2C) || \
85 defined(CONFIG_SOFT_I2C)
90 /************************************************************************
91 * Coloured LED functionality
92 ************************************************************************
93 * May be supplied by boards if desired
95 void inline __coloured_LED_init (void) {}
96 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
97 void inline __red_LED_on (void) {}
98 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
99 void inline __red_LED_off(void) {}
100 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
101 void inline __green_LED_on(void) {}
102 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
103 void inline __green_LED_off(void) {}
104 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
105 void inline __yellow_LED_on(void) {}
106 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
107 void inline __yellow_LED_off(void) {}
108 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
109 void inline __blue_LED_on(void) {}
110 void inline blue_LED_on(void)__attribute__((weak, alias("__blue_LED_on")));
111 void inline __blue_LED_off(void) {}
112 void inline blue_LED_off(void)__attribute__((weak, alias("__blue_LED_off")));
114 /************************************************************************
116 ************************************************************************
117 * Some of this code should be moved into the core functions,
118 * or dropped completely,
119 * but let's get it working (again) first...
122 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
123 #define CONFIG_BAUDRATE 115200
125 static int init_baudrate (void)
127 char tmp[64]; /* long enough for environment variables */
128 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
129 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
130 ? (int) simple_strtoul (tmp, NULL, 10)
136 static int display_banner (void)
138 printf ("\n\n%s\n\n", version_string);
139 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
140 _armboot_start, _bss_start, _bss_end);
141 #ifdef CONFIG_MODEM_SUPPORT
142 debug ("Modem Support enabled\n");
144 #ifdef CONFIG_USE_IRQ
145 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
146 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
153 * WARNING: this code looks "cleaner" than the PowerPC version, but
154 * has the disadvantage that you either get nothing, or everything.
155 * On PowerPC, you might see "DRAM: " before the system hangs - which
156 * gives a simple yet clear indication which part of the
157 * initialization if failing.
159 static int display_dram_config (void)
164 puts ("RAM Configuration:\n");
166 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
167 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
168 print_size (gd->bd->bi_dram[i].size, "\n");
173 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
174 size += gd->bd->bi_dram[i].size;
177 print_size(size, "\n");
183 #ifndef CONFIG_SYS_NO_FLASH
184 static void display_flash_config (ulong size)
187 print_size (size, "\n");
189 #endif /* CONFIG_SYS_NO_FLASH */
191 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
192 static int init_func_i2c (void)
195 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
201 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
203 static int arm_pci_init(void)
208 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
211 * Breathe some life into the board...
213 * Initialize a serial port as console, and carry out some hardware
216 * The first part of initialization is running from Flash memory;
217 * its main purpose is to initialize the RAM so that we
218 * can relocate the monitor code to RAM.
222 * All attempts to come up with a "common" initialization sequence
223 * that works for all boards and architectures failed: some of the
224 * requirements are just _too_ different. To get rid of the resulting
225 * mess of board dependent #ifdef'ed code we now make the whole
226 * initialization sequence configurable to the user.
228 * The requirements for any new initalization function is simple: it
229 * receives a pointer to the "global data" structure as it's only
230 * argument, and returns an integer return code, where 0 means
231 * "continue" and != 0 means "fatal error, hang the system".
233 typedef int (init_fnc_t) (void);
235 int print_cpuinfo (void);
237 init_fnc_t *init_sequence[] = {
238 #if defined(CONFIG_ARCH_CPU_INIT)
239 arch_cpu_init, /* basic arch cpu dependent setup */
241 board_init, /* basic board dependent setup */
242 #if defined(CONFIG_USE_IRQ)
243 interrupt_init, /* set up exceptions */
245 timer_init, /* initialize timer */
246 env_init, /* initialize environment */
247 init_baudrate, /* initialze baudrate settings */
248 serial_init, /* serial communications setup */
249 console_init_f, /* stage 1 init of console */
250 display_banner, /* say that we are here */
251 #if defined(CONFIG_DISPLAY_CPUINFO)
252 print_cpuinfo, /* display cpu info (and speed) */
254 #if defined(CONFIG_DISPLAY_BOARDINFO)
255 checkboard, /* display board info */
257 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
260 dram_init, /* configure available RAM banks */
261 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
268 void start_armboot (void)
270 init_fnc_t **init_fnc_ptr;
272 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
276 /* Pointer is writable since we allocated a register for it */
277 gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
278 /* compiler optimization barrier needed for GCC >= 3.4 */
279 __asm__ __volatile__("": : :"memory");
281 memset ((void*)gd, 0, sizeof (gd_t));
282 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
283 memset (gd->bd, 0, sizeof (bd_t));
285 gd->flags |= GD_FLG_RELOC;
287 monitor_flash_len = _bss_start - _armboot_start;
289 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
290 if ((*init_fnc_ptr)() != 0) {
295 /* armboot_start is defined in the board-specific linker script */
296 mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN,
297 CONFIG_SYS_MALLOC_LEN);
299 #ifndef CONFIG_SYS_NO_FLASH
300 /* configure available FLASH banks */
301 display_flash_config (flash_init ());
302 #endif /* CONFIG_SYS_NO_FLASH */
306 # define PAGE_SIZE 4096
309 * reserve memory for VFD display (always full pages)
311 /* bss_end is defined in the board-specific linker script */
312 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
315 #endif /* CONFIG_VFD */
318 /* board init may have inited fb_base */
321 # define PAGE_SIZE 4096
324 * reserve memory for LCD display (always full pages)
326 /* bss_end is defined in the board-specific linker script */
327 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
331 #endif /* CONFIG_LCD */
333 #if defined(CONFIG_CMD_NAND)
335 nand_init(); /* go init the NAND */
338 #if defined(CONFIG_CMD_ONENAND)
342 #ifdef CONFIG_HAS_DATAFLASH
343 AT91F_DataflashInit();
344 dataflash_print_info();
347 /* initialize environment */
351 /* must do this after the framebuffer is allocated */
353 #endif /* CONFIG_VFD */
355 #ifdef CONFIG_SERIAL_MULTI
360 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
362 stdio_init (); /* get the devices list going. */
366 #if defined(CONFIG_API)
371 console_init_r (); /* fully init console as a device */
373 #if defined(CONFIG_ARCH_MISC_INIT)
374 /* miscellaneous arch dependent initialisations */
377 #if defined(CONFIG_MISC_INIT_R)
378 /* miscellaneous platform dependent initialisations */
382 /* enable exceptions */
383 enable_interrupts ();
385 /* Perform network card initialisation if necessary */
386 #ifdef CONFIG_DRIVER_TI_EMAC
387 /* XXX: this needs to be moved to board init */
388 extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
389 if (getenv ("ethaddr")) {
391 eth_getenv_enetaddr("ethaddr", enetaddr);
392 davinci_eth_set_mac_addr(enetaddr);
396 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
397 /* XXX: this needs to be moved to board init */
398 if (getenv ("ethaddr")) {
400 eth_getenv_enetaddr("ethaddr", enetaddr);
401 smc_set_mac_addr(enetaddr);
403 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
405 /* Initialize from environment */
406 if ((s = getenv ("loadaddr")) != NULL) {
407 load_addr = simple_strtoul (s, NULL, 16);
409 #if defined(CONFIG_CMD_NET)
410 if ((s = getenv ("bootfile")) != NULL) {
411 copy_filename (BootFile, s, sizeof (BootFile));
415 #ifdef BOARD_LATE_INIT
419 #ifdef CONFIG_GENERIC_MMC
421 mmc_initialize (gd->bd);
424 #ifdef CONFIG_BITBANGMII
427 #if defined(CONFIG_CMD_NET)
428 #if defined(CONFIG_NET_MULTI)
431 eth_initialize(gd->bd);
432 #if defined(CONFIG_RESET_PHY_R)
433 debug ("Reset Ethernet PHY\n");
437 /* main_loop() can return to retry autoboot, if so just run it again. */
442 /* NOTREACHED - no way out of command loop except booting */
447 puts ("### ERROR ### Please RESET the board ###\n");