1 /* SPARC Board initialization
3 * (C) Copyright 2000-2006
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
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,
33 #if defined(CONFIG_CMD_IDE)
36 #ifdef CONFIG_STATUS_LED
37 #include <status_led.h>
42 #if defined(CONFIG_POST)
48 #ifdef CONFIG_CMD_AMBAPP
52 DECLARE_GLOBAL_DATA_PTR;
55 #define DEBUG_INIT_SEQUENCE
56 #define DEBUG_MEM_LAYOUT
57 #define DEBUG_COMMANDS
60 extern void timer_interrupt_init(void);
61 extern void malloc_bin_reloc(void);
62 extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
63 extern int prom_init(void);
65 #if defined(CONFIG__CMD_DOC)
69 #if !defined(CFG_NO_FLASH)
70 static char *failed = "*** failed ***\n";
73 #include <environment.h>
75 ulong monitor_flash_len;
78 * Begin and End of memory area for malloc(), and current "brk"
80 static ulong mem_malloc_start = 0;
81 static ulong mem_malloc_end = 0;
82 static ulong mem_malloc_brk = 0;
84 /************************************************************************
86 ************************************************************************
90 * The Malloc area is immediately below the monitor copy in RAM
92 static void mem_malloc_init(void)
94 mem_malloc_start = CFG_MALLOC_BASE;
95 mem_malloc_end = CFG_MALLOC_END;
96 mem_malloc_brk = mem_malloc_start;
97 memset((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
100 void *sbrk(ptrdiff_t increment)
102 ulong old = mem_malloc_brk;
103 ulong new = old + increment;
105 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
108 mem_malloc_brk = new;
109 return ((void *)old);
112 /***********************************************************************/
114 /************************************************************************
116 ************************************************************************
117 * Some of this code should be moved into the core functions,
118 * but let's get it working (again) first...
121 static int init_baudrate(void)
123 char tmp[64]; /* long enough for environment variables */
124 int i = getenv_r("baudrate", tmp, sizeof(tmp));
126 gd->baudrate = (i > 0)
127 ? (int)simple_strtoul(tmp, NULL, 10)
132 /***********************************************************************/
135 * All attempts to come up with a "common" initialization sequence
136 * that works for all boards and architectures failed: some of the
137 * requirements are just _too_ different. To get rid of the resulting
138 * mess of board dependend #ifdef'ed code we now make the whole
139 * initialization sequence configurable to the user.
141 * The requirements for any new initalization function is simple: it
142 * receives a pointer to the "global data" structure as it's only
143 * argument, and returns an integer return code, where 0 means
144 * "continue" and != 0 means "fatal error, hang the system".
146 typedef int (init_fnc_t) (void);
148 #define WATCHDOG_RESET(x)
150 /************************************************************************
151 * Initialization sequence *
152 ************************************************************************
155 init_fnc_t *init_sequence[] = {
157 #if defined(CONFIG_BOARD_EARLY_INIT_F)
164 #if defined(CONFIG_CMD_AMBAPP)
177 #if defined(CONFIG_MISC_INIT_F)
185 NULL, /* Terminate this list,
186 * beware: this list will be relocated
187 * which means that NULL will become
188 * NULL+RELOC_OFFSET. We simply make
189 * NULL be -RELOC_OFFSET instead.
193 /************************************************************************
195 * This is the SPARC board initialization routine, running from RAM.
197 ************************************************************************
199 #ifdef DEBUG_INIT_SEQUENCE
200 char *str_init_seq = "INIT_SEQ 00\n";
201 char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n";
204 void board_init_f(ulong bootflag)
209 init_fnc_t **init_fnc_ptr;
218 gd = (gd_t *) (CFG_GBL_DATA_OFFSET);
220 /* Clear initial global data */
221 memset((void *)gd, 0, sizeof(gd_t));
223 gd->bd = (bd_t *) (gd + 1); /* At end of global data */
224 gd->baudrate = CONFIG_BAUDRATE;
225 gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
228 bd->bi_memstart = CFG_RAM_BASE;
229 bd->bi_memsize = CFG_RAM_SIZE;
230 bd->bi_flashstart = CFG_FLASH_BASE;
231 #if defined(CFG_SRAM_BASE) && defined(CFG_SRAM_SIZE)
232 bd->bi_sramstart = CFG_SRAM_BASE;
233 bd->bi_sramsize = CFG_SRAM_SIZE;
235 bd->bi_baudrate = CONFIG_BAUDRATE;
236 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
238 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
239 gd->reloc_off = CFG_RELOC_MONITOR_BASE - CFG_MONITOR_BASE;
241 for (init_fnc_ptr = init_sequence, j = 0; *init_fnc_ptr;
242 ++init_fnc_ptr, j++) {
243 #ifdef DEBUG_INIT_SEQUENCE
245 str_init_seq[9] = '0' + (j / 10);
246 str_init_seq[10] = '0' + (j - (j / 10) * 10);
247 serial_puts(str_init_seq);
249 if ((*init_fnc_ptr + gd->reloc_off) () != 0) {
253 #ifdef DEBUG_INIT_SEQUENCE
254 serial_puts(str_init_seq_done);
258 * Now that we have DRAM mapped and working, we can
259 * relocate the code and continue running from DRAM.
261 * Reserve memory at end of RAM for (top down in that order):
262 * - kernel log buffer
266 * - board info struct
268 #ifdef DEBUG_MEM_LAYOUT
269 printf("CFG_MONITOR_BASE: 0x%lx\n", CFG_MONITOR_BASE);
270 printf("CFG_ENV_ADDR: 0x%lx\n", CFG_ENV_ADDR);
271 printf("CFG_RELOC_MONITOR_BASE: 0x%lx (%d)\n", CFG_RELOC_MONITOR_BASE,
273 printf("CFG_MALLOC_BASE: 0x%lx (%d)\n", CFG_MALLOC_BASE,
275 printf("CFG_INIT_SP_OFFSET: 0x%lx (%d)\n", CFG_INIT_SP_OFFSET,
277 printf("CFG_PROM_OFFSET: 0x%lx (%d)\n", CFG_PROM_OFFSET,
279 printf("CFG_GBL_DATA_OFFSET: 0x%lx (%d)\n", CFG_GBL_DATA_OFFSET,
284 post_bootmode_init();
285 post_run(NULL, POST_ROM | post_bootmode_get(0));
289 * We have to relocate the command table manually
291 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
293 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
295 printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
296 cmdtp->name, (ulong) (cmdtp->cmd), addr);
299 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
301 addr = (ulong) (cmdtp->name) + gd->reloc_off;
302 cmdtp->name = (char *)addr;
305 addr = (ulong) (cmdtp->usage) + gd->reloc_off;
306 cmdtp->usage = (char *)addr;
310 addr = (ulong) (cmdtp->help) + gd->reloc_off;
311 cmdtp->help = (char *)addr;
316 #if defined(CONFIG_CMD_AMBAPP) && defined(CFG_AMBAPP_PRINT_ON_STARTUP)
318 do_ambapp_print(NULL, 0, 0, NULL);
321 /* initialize higher level parts of CPU like time base and timers */
325 timer_interrupt_init();
328 * Enable Interrupts before any calls to udelay,
329 * the flash driver may use udelay resulting in
330 * a hang if not timer0 IRQ is enabled.
334 #if !defined(CFG_NO_FLASH)
337 if ((flash_size = flash_init()) > 0) {
338 # ifdef CFG_FLASH_CHECKSUM
339 print_size(flash_size, "");
341 * Compute and print flash CRC if flashchecksum is set to 'y'
343 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
345 s = getenv("flashchecksum");
346 if (s && (*s == 'y')) {
347 printf(" CRC: %08lX",
348 crc32(0, (const unsigned char *)CFG_FLASH_BASE,
353 # else /* !CFG_FLASH_CHECKSUM */
354 print_size(flash_size, "\n");
355 # endif /* CFG_FLASH_CHECKSUM */
361 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
362 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
363 #if CFG_MONITOR_BASE == CFG_FLASH_BASE
364 bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor */
366 bd->bi_flashoffset = 0;
368 #else /* CFG_NO_FLASH */
369 bd->bi_flashsize = 0;
370 bd->bi_flashstart = 0;
371 bd->bi_flashoffset = 0;
372 #endif /* !CFG_NO_FLASH */
374 /* initialize malloc() area */
380 # if !defined(CFG_ENV_IS_IN_EEPROM)
386 /* relocate environment function pointers etc. */
389 #if defined(CONFIG_BOARD_LATE_INIT)
393 s = getenv("ethaddr");
394 for (i = 0; i < 6; ++i) {
395 bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
397 s = (*e) ? e + 1 : e;
400 #ifdef CONFIG_HAS_ETH1
401 /* handle the 2nd ethernet address */
403 s = getenv("eth1addr");
405 for (i = 0; i < 6; ++i) {
406 bd->bi_enet1addr[i] = s ? simple_strtoul(s, &e, 16) : 0;
408 s = (*e) ? e + 1 : e;
413 mac_read_from_eeprom();
417 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
418 #if defined(CONFIG_PCI)
420 * Do pci configuration
425 /* Initialize devices */
428 /* Initialize the jump table for applications */
431 /* Initialize the console (after the relocation and devices init) */
434 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
435 serial_buffered_init();
438 #ifdef CONFIG_STATUS_LED
439 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
446 /* Initialize from environment */
447 if ((s = getenv("loadaddr")) != NULL) {
448 load_addr = simple_strtoul(s, NULL, 16);
450 #if defined(CONFIG_CMD_NET)
451 if ((s = getenv("bootfile")) != NULL) {
452 copy_filename(BootFile, s, sizeof(BootFile));
454 #endif /* CONFIG_CMD_NET */
458 #if defined(CONFIG_CMD_DOC)
464 #if defined(CONFIG_CMD_NET)
465 #if defined(CONFIG_NET_MULTI)
472 #if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
474 debug("Reset Ethernet PHY\n");
479 post_run(NULL, POST_RAM | post_bootmode_get(0));
482 #if defined(CONFIG_CMD_IDE)
486 #endif /* CONFIG_CMD_IDE */
488 #ifdef CONFIG_LAST_STAGE_INIT
491 * Some parts can be only initialized if all others (like
492 * Interrupts) are up and running (i.e. the PC-style ISA
514 puts("### ERROR ### Please RESET the board ###\n");
515 #ifdef CONFIG_SHOW_BOOT_PROGRESS
516 show_boot_progress(-30);
521 /************************************************************************/