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 #include <asm/initcalls.h>
31 #include <asm/sections.h>
33 #ifndef CONFIG_IDENT_STRING
34 #define CONFIG_IDENT_STRING ""
37 DECLARE_GLOBAL_DATA_PTR;
39 const char version_string[] =
40 U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME") " CONFIG_IDENT_STRING;
42 unsigned long monitor_flash_len;
44 /* Weak aliases for optional board functions */
45 static int __do_nothing(void)
49 int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
50 int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
52 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
53 #include <asm/arch/cacheflush.h>
56 static unsigned long dma_alloc_start;
57 static unsigned long dma_alloc_end;
58 static unsigned long dma_alloc_brk;
60 static void dma_alloc_init(void)
62 unsigned long monitor_addr;
64 monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
65 dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
66 dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
67 dma_alloc_brk = dma_alloc_start;
69 printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
70 dma_alloc_start, dma_alloc_end);
72 dcache_invalidate_range(cached(dma_alloc_start),
73 dma_alloc_end - dma_alloc_start);
76 void *dma_alloc_coherent(size_t len, unsigned long *handle)
78 unsigned long paddr = dma_alloc_brk;
80 if (dma_alloc_brk + len > dma_alloc_end)
83 dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
84 & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
87 return uncached(paddr);
90 static inline void dma_alloc_init(void)
96 static int init_baudrate(void)
101 i = getenv_r("baudrate", tmp, sizeof(tmp));
103 gd->baudrate = simple_strtoul(tmp, NULL, 10);
105 gd->baudrate = CONFIG_BAUDRATE;
111 static int display_banner (void)
113 printf ("\n\n%s\n\n", version_string);
114 printf ("U-Boot code: %p -> %p data: %p -> %p\n",
115 _text, _etext, _data, _end);
124 static int display_dram_config (void)
128 puts ("DRAM Configuration:\n");
130 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
131 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
132 print_size (gd->bd->bi_dram[i].size, "\n");
138 static void display_flash_config (void)
141 print_size(gd->bd->bi_flashsize, " ");
142 printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
145 void board_init_f(ulong board_type)
150 unsigned long *new_sp;
151 unsigned long monitor_len;
152 unsigned long monitor_addr;
156 /* Initialize the global data pointer */
157 memset(&gd_data, 0, sizeof(gd_data));
160 /* Perform initialization sequence */
161 board_early_init_f();
163 board_postclk_init();
169 sdram_size = initdram(board_type);
171 /* If we have no SDRAM, we can't go on */
173 panic("No working SDRAM available\n");
176 * Now that we have DRAM mapped and working, we can
177 * relocate the code and continue running from DRAM.
179 * Reserve memory at end of RAM for (top down in that order):
181 * - heap for malloc()
182 * - board info struct
183 * - global data struct
186 addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
187 monitor_len = _end - _text;
190 * Reserve memory for u-boot code, data and bss.
191 * Round down to next 4 kB limit.
194 addr &= ~(4096UL - 1);
197 /* Reserve memory for malloc() */
198 addr -= CONFIG_SYS_MALLOC_LEN;
200 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
201 /* Reserve DMA memory (must be cache aligned) */
202 addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
203 addr -= CONFIG_SYS_DMA_ALLOC_LEN;
207 #ifdef CONFIG_FB_ADDR
208 printf("LCD: Frame buffer allocated at preset 0x%08x\n",
210 gd->fb_base = (void *)CONFIG_FB_ADDR;
212 addr = lcd_setmem(addr);
213 printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
214 gd->fb_base = (void *)addr;
215 #endif /* CONFIG_FB_ADDR */
216 #endif /* CONFIG_LCD */
218 /* Allocate a Board Info struct on a word boundary */
219 addr -= sizeof(bd_t);
221 gd->bd = bd = (bd_t *)addr;
223 /* Allocate a new global data copy on a 8-byte boundary. */
224 addr -= sizeof(gd_t);
226 new_gd = (gd_t *)addr;
228 /* And finally, a new, bigger stack. */
229 new_sp = (unsigned long *)addr;
230 gd->stack_end = addr;
235 * Initialize the board information struct with the
236 * information we have.
238 bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
239 bd->bi_dram[0].size = sdram_size;
240 bd->bi_baudrate = gd->baudrate;
242 memcpy(new_gd, gd, sizeof(gd_t));
244 relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
247 void board_init_r(gd_t *new_gd, ulong dest_addr)
249 extern void malloc_bin_reloc (void);
250 #ifndef CONFIG_ENV_IS_NOWHERE
251 extern char * env_name_spec;
260 gd->flags |= GD_FLG_RELOC;
261 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
263 board_early_init_r();
265 monitor_flash_len = _edata - _text;
268 * We have to relocate the command table manually
270 for (cmdtp = &__u_boot_cmd_start;
271 cmdtp != &__u_boot_cmd_end; cmdtp++) {
274 addr = (unsigned long)cmdtp->cmd + gd->reloc_off;
275 cmdtp->cmd = (typeof(cmdtp->cmd))addr;
277 addr = (unsigned long)cmdtp->name + gd->reloc_off;
278 cmdtp->name = (typeof(cmdtp->name))addr;
281 addr = (unsigned long)cmdtp->usage + gd->reloc_off;
282 cmdtp->usage = (typeof(cmdtp->usage))addr;
284 #ifdef CONFIG_SYS_LONGHELP
286 addr = (unsigned long)cmdtp->help + gd->reloc_off;
287 cmdtp->help = (typeof(cmdtp->help))addr;
292 /* there are some other pointer constants we must deal with */
293 #ifndef CONFIG_ENV_IS_NOWHERE
294 env_name_spec += gd->reloc_off;
299 /* The malloc area is right below the monitor image in RAM */
300 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
301 CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
307 bd->bi_flashstart = 0;
308 bd->bi_flashsize = 0;
309 bd->bi_flashoffset = 0;
311 #ifndef CONFIG_SYS_NO_FLASH
312 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
313 bd->bi_flashsize = flash_init();
314 bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
316 if (bd->bi_flashsize)
317 display_flash_config();
320 if (bd->bi_dram[0].size)
321 display_dram_config();
323 gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
324 if (!gd->bd->bi_boot_params)
325 puts("WARNING: Cannot allocate space for boot parameters\n");
327 /* initialize environment */
330 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
336 s = getenv("loadaddr");
338 load_addr = simple_strtoul(s, NULL, 16);
340 #if defined(CONFIG_CMD_NET)
341 s = getenv("bootfile");
343 copy_filename(BootFile, s, sizeof(BootFile));
344 #if defined(CONFIG_NET_MULTI)
347 eth_initialize(gd->bd);