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>
28 #include <atmel_mci.h>
30 #ifdef CONFIG_BITBANGMII
34 #include <asm/sections.h>
35 #include <asm/arch/mmu.h>
36 #include <asm/arch/hardware.h>
38 #ifndef CONFIG_IDENT_STRING
39 #define CONFIG_IDENT_STRING ""
42 #ifdef CONFIG_GENERIC_ATMEL_MCI
45 DECLARE_GLOBAL_DATA_PTR;
47 unsigned long monitor_flash_len;
49 /* Weak aliases for optional board functions */
50 static int __do_nothing(void)
54 int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
55 int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
57 /* provide cpu_mmc_init, to overwrite provide board_mmc_init */
58 int cpu_mmc_init(bd_t *bd)
60 /* This calls the atmel_mci_init in gen_atmel_mci.c */
61 return atmel_mci_init((void *)ATMEL_BASE_MMCI);
64 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
65 #include <asm/arch/cacheflush.h>
68 static unsigned long dma_alloc_start;
69 static unsigned long dma_alloc_end;
70 static unsigned long dma_alloc_brk;
72 static void dma_alloc_init(void)
74 unsigned long monitor_addr;
76 monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
77 dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
78 dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
79 dma_alloc_brk = dma_alloc_start;
81 printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
82 dma_alloc_start, dma_alloc_end);
84 dcache_invalidate_range(cached(dma_alloc_start),
85 dma_alloc_end - dma_alloc_start);
88 void *dma_alloc_coherent(size_t len, unsigned long *handle)
90 unsigned long paddr = dma_alloc_brk;
92 if (dma_alloc_brk + len > dma_alloc_end)
95 dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
96 & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
99 return uncached(paddr);
102 static inline void dma_alloc_init(void)
108 static int init_baudrate(void)
110 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
114 static int display_banner (void)
116 printf ("\n\n%s\n\n", version_string);
117 printf ("U-Boot code: %08lx -> %08lx data: %08lx -> %08lx\n",
118 (unsigned long)_text, (unsigned long)_etext,
119 (unsigned long)_data, (unsigned long)(&__bss_end));
123 static int display_dram_config (void)
127 puts ("DRAM Configuration:\n");
129 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
130 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
131 print_size (gd->bd->bi_dram[i].size, "\n");
137 static void display_flash_config (void)
140 print_size(gd->bd->bi_flashsize, " ");
141 printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
144 void board_init_f(ulong board_type)
149 unsigned long *new_sp;
150 unsigned long monitor_len;
151 unsigned long monitor_addr;
155 /* Initialize the global data pointer */
156 memset(&gd_data, 0, sizeof(gd_data));
159 /* Perform initialization sequence */
160 board_early_init_f();
162 board_postclk_init();
168 sdram_size = initdram(board_type);
170 /* If we have no SDRAM, we can't go on */
172 panic("No working SDRAM available\n");
175 * Now that we have DRAM mapped and working, we can
176 * relocate the code and continue running from DRAM.
178 * Reserve memory at end of RAM for (top down in that order):
180 * - heap for malloc()
181 * - board info struct
182 * - global data struct
185 addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
186 monitor_len = (char *)(&__bss_end) - _text;
189 * Reserve memory for u-boot code, data and bss.
190 * Round down to next 4 kB limit.
193 addr &= ~(4096UL - 1);
196 /* Reserve memory for malloc() */
197 addr -= CONFIG_SYS_MALLOC_LEN;
199 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
200 /* Reserve DMA memory (must be cache aligned) */
201 addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
202 addr -= CONFIG_SYS_DMA_ALLOC_LEN;
206 #ifdef CONFIG_FB_ADDR
207 printf("LCD: Frame buffer allocated at preset 0x%08x\n",
209 gd->fb_base = CONFIG_FB_ADDR;
211 addr = lcd_setmem(addr);
212 printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
214 #endif /* CONFIG_FB_ADDR */
215 #endif /* CONFIG_LCD */
217 /* Allocate a Board Info struct on a word boundary */
218 addr -= sizeof(bd_t);
220 gd->bd = bd = (bd_t *)addr;
222 /* Allocate a new global data copy on a 8-byte boundary. */
223 addr -= sizeof(gd_t);
225 new_gd = (gd_t *)addr;
227 /* And finally, a new, bigger stack. */
228 new_sp = (unsigned long *)addr;
229 gd->arch.stack_end = addr;
234 * Initialize the board information struct with the
235 * information we have.
237 bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
238 bd->bi_dram[0].size = sdram_size;
239 bd->bi_baudrate = gd->baudrate;
241 memcpy(new_gd, gd, sizeof(gd_t));
243 relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
246 void board_init_r(gd_t *new_gd, ulong dest_addr)
248 #ifndef CONFIG_ENV_IS_NOWHERE
249 extern char * env_name_spec;
256 gd->flags |= GD_FLG_RELOC;
257 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
259 /* Enable the MMU so that we can keep u-boot simple */
260 mmu_init_r(dest_addr);
262 board_early_init_r();
264 monitor_flash_len = _edata - _text;
266 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
268 * We have to relocate the command table manually
270 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
271 ll_entry_count(cmd_tbl_t, cmd));
272 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
274 /* there are some other pointer constants we must deal with */
275 #ifndef CONFIG_ENV_IS_NOWHERE
276 env_name_spec += gd->reloc_off;
281 /* The malloc area is right below the monitor image in RAM */
282 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
283 CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
288 bd->bi_flashstart = 0;
289 bd->bi_flashsize = 0;
290 bd->bi_flashoffset = 0;
292 #ifndef CONFIG_SYS_NO_FLASH
293 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
294 bd->bi_flashsize = flash_init();
295 bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
297 if (bd->bi_flashsize)
298 display_flash_config();
301 if (bd->bi_dram[0].size)
302 display_dram_config();
304 gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
305 if (!gd->bd->bi_boot_params)
306 puts("WARNING: Cannot allocate space for boot parameters\n");
308 /* initialize environment */
315 /* Initialize from environment */
316 load_addr = getenv_ulong("loadaddr", 16, load_addr);
318 #ifdef CONFIG_BITBANGMII
321 #if defined(CONFIG_CMD_NET)
323 eth_initialize(gd->bd);
326 #ifdef CONFIG_GENERIC_ATMEL_MCI
327 mmc_initialize(gd->bd);