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,
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;
45 * Begin and end of memory area for malloc(), and current "brk"
47 static unsigned long mem_malloc_start = 0;
48 static unsigned long mem_malloc_end = 0;
49 static unsigned long mem_malloc_brk = 0;
51 /* The malloc area is right below the monitor image in RAM */
52 static void mem_malloc_init(void)
54 unsigned long monitor_addr;
56 monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
57 mem_malloc_end = monitor_addr;
58 mem_malloc_start = mem_malloc_end - CONFIG_SYS_MALLOC_LEN;
59 mem_malloc_brk = mem_malloc_start;
61 printf("malloc: Using memory from 0x%08lx to 0x%08lx\n",
62 mem_malloc_start, mem_malloc_end);
64 memset ((void *)mem_malloc_start, 0,
65 mem_malloc_end - mem_malloc_start);
68 void *sbrk(ptrdiff_t increment)
70 unsigned long old = mem_malloc_brk;
71 unsigned long new = old + increment;
73 if ((new < mem_malloc_start) || (new > mem_malloc_end))
80 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
81 #include <asm/cacheflush.h>
84 static unsigned long dma_alloc_start;
85 static unsigned long dma_alloc_end;
86 static unsigned long dma_alloc_brk;
88 static void dma_alloc_init(void)
90 unsigned long monitor_addr;
92 monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
93 dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
94 dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
95 dma_alloc_brk = dma_alloc_start;
97 printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
98 dma_alloc_start, dma_alloc_end);
100 dcache_invalidate_range(cached(dma_alloc_start),
101 dma_alloc_end - dma_alloc_start);
104 void *dma_alloc_coherent(size_t len, unsigned long *handle)
106 unsigned long paddr = dma_alloc_brk;
108 if (dma_alloc_brk + len > dma_alloc_end)
111 dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
112 & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
115 return uncached(paddr);
118 static inline void dma_alloc_init(void)
124 static int init_baudrate(void)
129 i = getenv_r("baudrate", tmp, sizeof(tmp));
131 gd->baudrate = simple_strtoul(tmp, NULL, 10);
133 gd->baudrate = CONFIG_BAUDRATE;
139 static int display_banner (void)
141 printf ("\n\n%s\n\n", version_string);
142 printf ("U-Boot code: %p -> %p data: %p -> %p\n",
143 _text, _etext, _data, _end);
152 static int display_dram_config (void)
156 puts ("DRAM Configuration:\n");
158 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
159 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
160 print_size (gd->bd->bi_dram[i].size, "\n");
166 static void display_flash_config (void)
169 print_size(gd->bd->bi_flashsize, " ");
170 printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
173 void board_init_f(ulong board_type)
178 unsigned long *new_sp;
179 unsigned long monitor_len;
180 unsigned long monitor_addr;
184 /* Initialize the global data pointer */
185 memset(&gd_data, 0, sizeof(gd_data));
188 /* Perform initialization sequence */
189 board_early_init_f();
196 sdram_size = initdram(board_type);
198 /* If we have no SDRAM, we can't go on */
200 panic("No working SDRAM available\n");
203 * Now that we have DRAM mapped and working, we can
204 * relocate the code and continue running from DRAM.
206 * Reserve memory at end of RAM for (top down in that order):
208 * - heap for malloc()
209 * - board info struct
210 * - global data struct
213 addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
214 monitor_len = _end - _text;
217 * Reserve memory for u-boot code, data and bss.
218 * Round down to next 4 kB limit.
221 addr &= ~(4096UL - 1);
224 /* Reserve memory for malloc() */
225 addr -= CONFIG_SYS_MALLOC_LEN;
227 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
228 /* Reserve DMA memory (must be cache aligned) */
229 addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
230 addr -= CONFIG_SYS_DMA_ALLOC_LEN;
233 /* Allocate a Board Info struct on a word boundary */
234 addr -= sizeof(bd_t);
236 gd->bd = bd = (bd_t *)addr;
238 /* Allocate a new global data copy on a 8-byte boundary. */
239 addr -= sizeof(gd_t);
241 new_gd = (gd_t *)addr;
243 /* And finally, a new, bigger stack. */
244 new_sp = (unsigned long *)addr;
245 gd->stack_end = addr;
250 * Initialize the board information struct with the
251 * information we have.
253 bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
254 bd->bi_dram[0].size = sdram_size;
255 bd->bi_baudrate = gd->baudrate;
257 memcpy(new_gd, gd, sizeof(gd_t));
259 relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
262 void board_init_r(gd_t *new_gd, ulong dest_addr)
264 extern void malloc_bin_reloc (void);
265 #ifndef CONFIG_ENV_IS_NOWHERE
266 extern char * env_name_spec;
275 gd->flags |= GD_FLG_RELOC;
276 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
278 monitor_flash_len = _edata - _text;
281 * We have to relocate the command table manually
283 for (cmdtp = &__u_boot_cmd_start;
284 cmdtp != &__u_boot_cmd_end; cmdtp++) {
287 addr = (unsigned long)cmdtp->cmd + gd->reloc_off;
288 cmdtp->cmd = (typeof(cmdtp->cmd))addr;
290 addr = (unsigned long)cmdtp->name + gd->reloc_off;
291 cmdtp->name = (typeof(cmdtp->name))addr;
294 addr = (unsigned long)cmdtp->usage + gd->reloc_off;
295 cmdtp->usage = (typeof(cmdtp->usage))addr;
297 #ifdef CONFIG_SYS_LONGHELP
299 addr = (unsigned long)cmdtp->help + gd->reloc_off;
300 cmdtp->help = (typeof(cmdtp->help))addr;
305 /* there are some other pointer constants we must deal with */
306 #ifndef CONFIG_ENV_IS_NOWHERE
307 env_name_spec += gd->reloc_off;
318 bd->bi_flashstart = 0;
319 bd->bi_flashsize = 0;
320 bd->bi_flashoffset = 0;
322 #ifndef CONFIG_SYS_NO_FLASH
323 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
324 bd->bi_flashsize = flash_init();
325 bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
327 if (bd->bi_flashsize)
328 display_flash_config();
331 if (bd->bi_dram[0].size)
332 display_dram_config();
334 gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
335 if (!gd->bd->bi_boot_params)
336 puts("WARNING: Cannot allocate space for boot parameters\n");
338 /* initialize environment */
341 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
347 s = getenv("loadaddr");
349 load_addr = simple_strtoul(s, NULL, 16);
351 #if defined(CONFIG_CMD_NET)
352 s = getenv("bootfile");
354 copy_filename(BootFile, s, sizeof(BootFile));
355 #if defined(CONFIG_NET_MULTI)
358 eth_initialize(gd->bd);