2 * Copyright (C) 2004-2006 Atmel Corporation
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <stdio_dev.h>
26 #include <timestamp.h>
30 #ifdef CONFIG_BITBANGMII
34 #include <asm/initcalls.h>
35 #include <asm/sections.h>
37 #ifndef CONFIG_IDENT_STRING
38 #define CONFIG_IDENT_STRING ""
41 DECLARE_GLOBAL_DATA_PTR;
43 const char version_string[] =
44 U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME") " CONFIG_IDENT_STRING;
46 unsigned long monitor_flash_len;
48 /* Weak aliases for optional board functions */
49 static int __do_nothing(void)
53 int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
54 int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
56 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
57 #include <asm/arch/cacheflush.h>
60 static unsigned long dma_alloc_start;
61 static unsigned long dma_alloc_end;
62 static unsigned long dma_alloc_brk;
64 static void dma_alloc_init(void)
66 unsigned long monitor_addr;
68 monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
69 dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
70 dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
71 dma_alloc_brk = dma_alloc_start;
73 printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
74 dma_alloc_start, dma_alloc_end);
76 dcache_invalidate_range(cached(dma_alloc_start),
77 dma_alloc_end - dma_alloc_start);
80 void *dma_alloc_coherent(size_t len, unsigned long *handle)
82 unsigned long paddr = dma_alloc_brk;
84 if (dma_alloc_brk + len > dma_alloc_end)
87 dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
88 & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
91 return uncached(paddr);
94 static inline void dma_alloc_init(void)
100 static int init_baudrate(void)
105 i = getenv_r("baudrate", tmp, sizeof(tmp));
107 gd->baudrate = simple_strtoul(tmp, NULL, 10);
109 gd->baudrate = CONFIG_BAUDRATE;
115 static int display_banner (void)
117 printf ("\n\n%s\n\n", version_string);
118 printf ("U-Boot code: %p -> %p data: %p -> %p\n",
119 _text, _etext, _data, _end);
128 static int display_dram_config (void)
132 puts ("DRAM Configuration:\n");
134 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
135 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
136 print_size (gd->bd->bi_dram[i].size, "\n");
142 static void display_flash_config (void)
145 print_size(gd->bd->bi_flashsize, " ");
146 printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
149 void board_init_f(ulong board_type)
154 unsigned long *new_sp;
155 unsigned long monitor_len;
156 unsigned long monitor_addr;
160 /* Initialize the global data pointer */
161 memset(&gd_data, 0, sizeof(gd_data));
164 /* Perform initialization sequence */
165 board_early_init_f();
167 board_postclk_init();
173 sdram_size = initdram(board_type);
175 /* If we have no SDRAM, we can't go on */
177 panic("No working SDRAM available\n");
180 * Now that we have DRAM mapped and working, we can
181 * relocate the code and continue running from DRAM.
183 * Reserve memory at end of RAM for (top down in that order):
185 * - heap for malloc()
186 * - board info struct
187 * - global data struct
190 addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
191 monitor_len = _end - _text;
194 * Reserve memory for u-boot code, data and bss.
195 * Round down to next 4 kB limit.
198 addr &= ~(4096UL - 1);
201 /* Reserve memory for malloc() */
202 addr -= CONFIG_SYS_MALLOC_LEN;
204 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
205 /* Reserve DMA memory (must be cache aligned) */
206 addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
207 addr -= CONFIG_SYS_DMA_ALLOC_LEN;
211 #ifdef CONFIG_FB_ADDR
212 printf("LCD: Frame buffer allocated at preset 0x%08x\n",
214 gd->fb_base = (void *)CONFIG_FB_ADDR;
216 addr = lcd_setmem(addr);
217 printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
218 gd->fb_base = (void *)addr;
219 #endif /* CONFIG_FB_ADDR */
220 #endif /* CONFIG_LCD */
222 /* Allocate a Board Info struct on a word boundary */
223 addr -= sizeof(bd_t);
225 gd->bd = bd = (bd_t *)addr;
227 /* Allocate a new global data copy on a 8-byte boundary. */
228 addr -= sizeof(gd_t);
230 new_gd = (gd_t *)addr;
232 /* And finally, a new, bigger stack. */
233 new_sp = (unsigned long *)addr;
234 gd->stack_end = addr;
239 * Initialize the board information struct with the
240 * information we have.
242 bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
243 bd->bi_dram[0].size = sdram_size;
244 bd->bi_baudrate = gd->baudrate;
246 memcpy(new_gd, gd, sizeof(gd_t));
248 relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
251 void board_init_r(gd_t *new_gd, ulong dest_addr)
253 extern void malloc_bin_reloc (void);
254 #ifndef CONFIG_ENV_IS_NOWHERE
255 extern char * env_name_spec;
264 gd->flags |= GD_FLG_RELOC;
265 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
267 board_early_init_r();
269 monitor_flash_len = _edata - _text;
272 * We have to relocate the command table manually
274 for (cmdtp = &__u_boot_cmd_start;
275 cmdtp != &__u_boot_cmd_end; cmdtp++) {
278 addr = (unsigned long)cmdtp->cmd + gd->reloc_off;
279 cmdtp->cmd = (typeof(cmdtp->cmd))addr;
281 addr = (unsigned long)cmdtp->name + gd->reloc_off;
282 cmdtp->name = (typeof(cmdtp->name))addr;
285 addr = (unsigned long)cmdtp->usage + gd->reloc_off;
286 cmdtp->usage = (typeof(cmdtp->usage))addr;
288 #ifdef CONFIG_SYS_LONGHELP
290 addr = (unsigned long)cmdtp->help + gd->reloc_off;
291 cmdtp->help = (typeof(cmdtp->help))addr;
296 /* there are some other pointer constants we must deal with */
297 #ifndef CONFIG_ENV_IS_NOWHERE
298 env_name_spec += gd->reloc_off;
303 /* The malloc area is right below the monitor image in RAM */
304 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
305 CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
311 bd->bi_flashstart = 0;
312 bd->bi_flashsize = 0;
313 bd->bi_flashoffset = 0;
315 #ifndef CONFIG_SYS_NO_FLASH
316 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
317 bd->bi_flashsize = flash_init();
318 bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
320 if (bd->bi_flashsize)
321 display_flash_config();
324 if (bd->bi_dram[0].size)
325 display_dram_config();
327 gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
328 if (!gd->bd->bi_boot_params)
329 puts("WARNING: Cannot allocate space for boot parameters\n");
331 /* initialize environment */
334 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
340 s = getenv("loadaddr");
342 load_addr = simple_strtoul(s, NULL, 16);
344 #ifdef CONFIG_BITBANGMII
347 #if defined(CONFIG_CMD_NET)
348 s = getenv("bootfile");
350 copy_filename(BootFile, s, sizeof(BootFile));
351 #if defined(CONFIG_NET_MULTI)
354 eth_initialize(gd->bd);