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,
31 #include <stdio_dev.h>
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(CONFIG_SYS_NO_FLASH)
70 static char *failed = "*** failed ***\n";
73 #include <environment.h>
75 ulong monitor_flash_len;
77 /************************************************************************
79 ************************************************************************
83 * The Malloc area is immediately below the monitor copy in RAM
85 static void mem_malloc_init(ulong start, ulong size)
87 mem_malloc_start = start;
88 mem_malloc_end = start + size;
89 mem_malloc_brk = start
91 memset((void *)mem_malloc_start, 0, size);
94 /***********************************************************************/
96 /************************************************************************
98 ************************************************************************
99 * Some of this code should be moved into the core functions,
100 * but let's get it working (again) first...
103 static int init_baudrate(void)
105 char tmp[64]; /* long enough for environment variables */
106 int i = getenv_r("baudrate", tmp, sizeof(tmp));
108 gd->baudrate = (i > 0)
109 ? (int)simple_strtoul(tmp, NULL, 10)
114 /***********************************************************************/
117 * All attempts to come up with a "common" initialization sequence
118 * that works for all boards and architectures failed: some of the
119 * requirements are just _too_ different. To get rid of the resulting
120 * mess of board dependend #ifdef'ed code we now make the whole
121 * initialization sequence configurable to the user.
123 * The requirements for any new initalization function is simple: it
124 * receives a pointer to the "global data" structure as it's only
125 * argument, and returns an integer return code, where 0 means
126 * "continue" and != 0 means "fatal error, hang the system".
128 typedef int (init_fnc_t) (void);
130 #define WATCHDOG_RESET(x)
132 /************************************************************************
133 * Initialization sequence *
134 ************************************************************************
137 init_fnc_t *init_sequence[] = {
139 #if defined(CONFIG_BOARD_EARLY_INIT_F)
146 #if defined(CONFIG_CMD_AMBAPP)
159 #if defined(CONFIG_MISC_INIT_F)
167 NULL, /* Terminate this list,
168 * beware: this list will be relocated
169 * which means that NULL will become
170 * NULL+RELOC_OFFSET. We simply make
171 * NULL be -RELOC_OFFSET instead.
175 /************************************************************************
177 * This is the SPARC board initialization routine, running from RAM.
179 ************************************************************************
181 #ifdef DEBUG_INIT_SEQUENCE
182 char *str_init_seq = "INIT_SEQ 00\n";
183 char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n";
186 void board_init_f(ulong bootflag)
191 init_fnc_t **init_fnc_ptr;
196 #ifndef CONFIG_SYS_NO_FLASH
200 gd = (gd_t *) (CONFIG_SYS_GBL_DATA_OFFSET);
202 /* Clear initial global data */
203 memset((void *)gd, 0, sizeof(gd_t));
205 gd->bd = (bd_t *) (gd + 1); /* At end of global data */
206 gd->baudrate = CONFIG_BAUDRATE;
207 gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
210 bd->bi_memstart = CONFIG_SYS_RAM_BASE;
211 bd->bi_memsize = CONFIG_SYS_RAM_SIZE;
212 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
213 #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
214 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;
215 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
217 bd->bi_baudrate = CONFIG_BAUDRATE;
218 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
220 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
221 gd->reloc_off = CONFIG_SYS_RELOC_MONITOR_BASE - CONFIG_SYS_MONITOR_BASE;
223 for (init_fnc_ptr = init_sequence, j = 0; *init_fnc_ptr;
224 ++init_fnc_ptr, j++) {
225 #ifdef DEBUG_INIT_SEQUENCE
227 str_init_seq[9] = '0' + (j / 10);
228 str_init_seq[10] = '0' + (j - (j / 10) * 10);
229 serial_puts(str_init_seq);
231 if ((*init_fnc_ptr + gd->reloc_off) () != 0) {
235 #ifdef DEBUG_INIT_SEQUENCE
236 serial_puts(str_init_seq_done);
240 * Now that we have DRAM mapped and working, we can
241 * relocate the code and continue running from DRAM.
243 * Reserve memory at end of RAM for (top down in that order):
244 * - kernel log buffer
248 * - board info struct
250 #ifdef DEBUG_MEM_LAYOUT
251 printf("CONFIG_SYS_MONITOR_BASE: 0x%lx\n", CONFIG_SYS_MONITOR_BASE);
252 printf("CONFIG_ENV_ADDR: 0x%lx\n", CONFIG_ENV_ADDR);
253 printf("CONFIG_SYS_RELOC_MONITOR_BASE: 0x%lx (%d)\n", CONFIG_SYS_RELOC_MONITOR_BASE,
254 CONFIG_SYS_MONITOR_LEN);
255 printf("CONFIG_SYS_MALLOC_BASE: 0x%lx (%d)\n", CONFIG_SYS_MALLOC_BASE,
256 CONFIG_SYS_MALLOC_LEN);
257 printf("CONFIG_SYS_INIT_SP_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_INIT_SP_OFFSET,
258 CONFIG_SYS_STACK_SIZE);
259 printf("CONFIG_SYS_PROM_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_PROM_OFFSET,
260 CONFIG_SYS_PROM_SIZE);
261 printf("CONFIG_SYS_GBL_DATA_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_GBL_DATA_OFFSET,
262 CONFIG_SYS_GBL_DATA_SIZE);
266 post_bootmode_init();
267 post_run(NULL, POST_ROM | post_bootmode_get(0));
271 * We have to relocate the command table manually
273 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
275 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
277 printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
278 cmdtp->name, (ulong) (cmdtp->cmd), addr);
281 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
283 addr = (ulong) (cmdtp->name) + gd->reloc_off;
284 cmdtp->name = (char *)addr;
287 addr = (ulong) (cmdtp->usage) + gd->reloc_off;
288 cmdtp->usage = (char *)addr;
290 #ifdef CONFIG_SYS_LONGHELP
292 addr = (ulong) (cmdtp->help) + gd->reloc_off;
293 cmdtp->help = (char *)addr;
298 #if defined(CONFIG_CMD_AMBAPP) && defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP)
300 do_ambapp_print(NULL, 0, 0, NULL);
303 /* initialize higher level parts of CPU like time base and timers */
307 timer_interrupt_init();
310 * Enable Interrupts before any calls to udelay,
311 * the flash driver may use udelay resulting in
312 * a hang if not timer0 IRQ is enabled.
316 /* initialize malloc() area */
317 mem_malloc_init(CONFIG_SYS_MALLOC_BASE,
318 CONFIG_SYS_MALLOC_END - CONFIG_SYS_MALLOC_BASE);
321 #if !defined(CONFIG_SYS_NO_FLASH)
324 if ((flash_size = flash_init()) > 0) {
325 # ifdef CONFIG_SYS_FLASH_CHECKSUM
326 print_size(flash_size, "");
328 * Compute and print flash CRC if flashchecksum is set to 'y'
330 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
332 s = getenv("flashchecksum");
333 if (s && (*s == 'y')) {
334 printf(" CRC: %08lX",
335 crc32(0, (const unsigned char *)CONFIG_SYS_FLASH_BASE,
340 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
341 print_size(flash_size, "\n");
342 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
348 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
349 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
350 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
351 bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor */
353 bd->bi_flashoffset = 0;
355 #else /* CONFIG_SYS_NO_FLASH */
356 bd->bi_flashsize = 0;
357 bd->bi_flashstart = 0;
358 bd->bi_flashoffset = 0;
359 #endif /* !CONFIG_SYS_NO_FLASH */
362 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
368 /* relocate environment function pointers etc. */
371 #if defined(CONFIG_BOARD_LATE_INIT)
375 #ifdef CONFIG_ID_EEPROM
376 mac_read_from_eeprom();
380 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
381 #if defined(CONFIG_PCI)
383 * Do pci configuration
388 /* Initialize stdio devices */
391 /* Initialize the jump table for applications */
394 /* Initialize the console (after the relocation and devices init) */
397 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
398 serial_buffered_init();
401 #ifdef CONFIG_STATUS_LED
402 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
409 /* Initialize from environment */
410 if ((s = getenv("loadaddr")) != NULL) {
411 load_addr = simple_strtoul(s, NULL, 16);
413 #if defined(CONFIG_CMD_NET)
414 if ((s = getenv("bootfile")) != NULL) {
415 copy_filename(BootFile, s, sizeof(BootFile));
417 #endif /* CONFIG_CMD_NET */
421 #if defined(CONFIG_CMD_DOC)
427 #if defined(CONFIG_CMD_NET)
428 #if defined(CONFIG_NET_MULTI)
435 #if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
437 debug("Reset Ethernet PHY\n");
442 post_run(NULL, POST_RAM | post_bootmode_get(0));
445 #if defined(CONFIG_CMD_IDE)
449 #endif /* CONFIG_CMD_IDE */
451 #ifdef CONFIG_LAST_STAGE_INIT
454 * Some parts can be only initialized if all others (like
455 * Interrupts) are up and running (i.e. the PC-style ISA
477 puts("### ERROR ### Please RESET the board ###\n");
478 #ifdef CONFIG_SHOW_BOOT_PROGRESS
479 show_boot_progress(-30);
484 /************************************************************************/