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Wolfgang Denk7b64fef2006-10-24 14:21:16 +02001/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
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.
11 *
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.
16 *
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,
20 * MA 02111-1307 USA
21 */
22#include <common.h>
23#include <command.h>
24#include <malloc.h>
25#include <devices.h>
Peter Tyser561858e2008-11-03 09:30:59 -060026#include <timestamp.h>
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020027#include <version.h>
28#include <net.h>
29
30#include <asm/initcalls.h>
31#include <asm/sections.h>
32
33#ifndef CONFIG_IDENT_STRING
34#define CONFIG_IDENT_STRING ""
35#endif
36
37DECLARE_GLOBAL_DATA_PTR;
38
39const char version_string[] =
Peter Tyser561858e2008-11-03 09:30:59 -060040 U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME") " CONFIG_IDENT_STRING;
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020041
42unsigned long monitor_flash_len;
43
44/*
45 * Begin and end of memory area for malloc(), and current "brk"
46 */
47static unsigned long mem_malloc_start = 0;
48static unsigned long mem_malloc_end = 0;
49static unsigned long mem_malloc_brk = 0;
50
Haavard Skinnemoen36d375f2008-08-31 18:24:24 +020051/* Weak aliases for optional board functions */
52static int __do_nothing(void)
53{
54 return 0;
55}
56int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
Haavard Skinnemoen25e68542008-08-31 18:46:35 +020057int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
Haavard Skinnemoen36d375f2008-08-31 18:24:24 +020058
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +010059/* The malloc area is right below the monitor image in RAM */
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020060static void mem_malloc_init(void)
61{
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +010062 unsigned long monitor_addr;
63
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020064 monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +010065 mem_malloc_end = monitor_addr;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020066 mem_malloc_start = mem_malloc_end - CONFIG_SYS_MALLOC_LEN;
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020067 mem_malloc_brk = mem_malloc_start;
68
69 printf("malloc: Using memory from 0x%08lx to 0x%08lx\n",
70 mem_malloc_start, mem_malloc_end);
71
72 memset ((void *)mem_malloc_start, 0,
73 mem_malloc_end - mem_malloc_start);
74}
75
76void *sbrk(ptrdiff_t increment)
77{
78 unsigned long old = mem_malloc_brk;
79 unsigned long new = old + increment;
80
81 if ((new < mem_malloc_start) || (new > mem_malloc_end))
82 return NULL;
83
84 mem_malloc_brk = new;
85 return ((void *)old);
86}
87
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020088#ifdef CONFIG_SYS_DMA_ALLOC_LEN
Olav Morkend8f2aa32009-01-23 12:56:27 +010089#include <asm/arch/cacheflush.h>
Haavard Skinnemoend5acb952006-12-17 15:39:15 +010090#include <asm/io.h>
91
92static unsigned long dma_alloc_start;
93static unsigned long dma_alloc_end;
94static unsigned long dma_alloc_brk;
95
96static void dma_alloc_init(void)
97{
98 unsigned long monitor_addr;
99
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200100 monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
101 dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
102 dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
Haavard Skinnemoend5acb952006-12-17 15:39:15 +0100103 dma_alloc_brk = dma_alloc_start;
104
105 printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
106 dma_alloc_start, dma_alloc_end);
107
108 dcache_invalidate_range(cached(dma_alloc_start),
109 dma_alloc_end - dma_alloc_start);
110}
111
112void *dma_alloc_coherent(size_t len, unsigned long *handle)
113{
114 unsigned long paddr = dma_alloc_brk;
115
116 if (dma_alloc_brk + len > dma_alloc_end)
117 return NULL;
118
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200119 dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
120 & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
Haavard Skinnemoend5acb952006-12-17 15:39:15 +0100121
122 *handle = paddr;
123 return uncached(paddr);
124}
125#else
126static inline void dma_alloc_init(void)
127{
128
129}
130#endif
131
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200132static int init_baudrate(void)
133{
134 char tmp[64];
135 int i;
136
137 i = getenv_r("baudrate", tmp, sizeof(tmp));
138 if (i > 0) {
139 gd->baudrate = simple_strtoul(tmp, NULL, 10);
140 } else {
141 gd->baudrate = CONFIG_BAUDRATE;
142 }
143 return 0;
144}
145
146
147static int display_banner (void)
148{
149 printf ("\n\n%s\n\n", version_string);
150 printf ("U-Boot code: %p -> %p data: %p -> %p\n",
151 _text, _etext, _data, _end);
152 return 0;
153}
154
155void hang(void)
156{
157 for (;;) ;
158}
159
160static int display_dram_config (void)
161{
162 int i;
163
164 puts ("DRAM Configuration:\n");
165
166 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
167 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
168 print_size (gd->bd->bi_dram[i].size, "\n");
169 }
170
171 return 0;
172}
173
174static void display_flash_config (void)
175{
176 puts ("Flash: ");
177 print_size(gd->bd->bi_flashsize, " ");
178 printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
179}
180
Haavard Skinnemoen12f099c2006-12-17 14:46:06 +0100181void board_init_f(ulong board_type)
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200182{
183 gd_t gd_data;
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100184 gd_t *new_gd;
185 bd_t *bd;
186 unsigned long *new_sp;
187 unsigned long monitor_len;
188 unsigned long monitor_addr;
189 unsigned long addr;
Haavard Skinnemoen12f099c2006-12-17 14:46:06 +0100190 long sdram_size;
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200191
192 /* Initialize the global data pointer */
193 memset(&gd_data, 0, sizeof(gd_data));
194 gd = &gd_data;
195
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200196 /* Perform initialization sequence */
Haavard Skinnemoendf548d32006-11-19 18:06:53 +0100197 board_early_init_f();
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200198 cpu_init();
Haavard Skinnemoen36d375f2008-08-31 18:24:24 +0200199 board_postclk_init();
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200200 env_init();
201 init_baudrate();
202 serial_init();
203 console_init_f();
204 display_banner();
Haavard Skinnemoen12f099c2006-12-17 14:46:06 +0100205 sdram_size = initdram(board_type);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200206
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100207 /* If we have no SDRAM, we can't go on */
Haavard Skinnemoen12f099c2006-12-17 14:46:06 +0100208 if (sdram_size <= 0)
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100209 panic("No working SDRAM available\n");
210
211 /*
212 * Now that we have DRAM mapped and working, we can
213 * relocate the code and continue running from DRAM.
214 *
215 * Reserve memory at end of RAM for (top down in that order):
216 * - u-boot image
217 * - heap for malloc()
218 * - board info struct
219 * - global data struct
220 * - stack
221 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200222 addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100223 monitor_len = _end - _text;
224
225 /*
226 * Reserve memory for u-boot code, data and bss.
227 * Round down to next 4 kB limit.
228 */
229 addr -= monitor_len;
230 addr &= ~(4096UL - 1);
231 monitor_addr = addr;
232
233 /* Reserve memory for malloc() */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200234 addr -= CONFIG_SYS_MALLOC_LEN;
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100235
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200236#ifdef CONFIG_SYS_DMA_ALLOC_LEN
Haavard Skinnemoend5acb952006-12-17 15:39:15 +0100237 /* Reserve DMA memory (must be cache aligned) */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200238 addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
239 addr -= CONFIG_SYS_DMA_ALLOC_LEN;
Haavard Skinnemoend5acb952006-12-17 15:39:15 +0100240#endif
241
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100242 /* Allocate a Board Info struct on a word boundary */
243 addr -= sizeof(bd_t);
244 addr &= ~3UL;
245 gd->bd = bd = (bd_t *)addr;
246
247 /* Allocate a new global data copy on a 8-byte boundary. */
248 addr -= sizeof(gd_t);
249 addr &= ~7UL;
250 new_gd = (gd_t *)addr;
251
252 /* And finally, a new, bigger stack. */
253 new_sp = (unsigned long *)addr;
254 gd->stack_end = addr;
255 *(--new_sp) = 0;
256 *(--new_sp) = 0;
257
258 /*
259 * Initialize the board information struct with the
260 * information we have.
261 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200262 bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
Haavard Skinnemoen12f099c2006-12-17 14:46:06 +0100263 bd->bi_dram[0].size = sdram_size;
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100264 bd->bi_baudrate = gd->baudrate;
265
266 memcpy(new_gd, gd, sizeof(gd_t));
267
268 relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
Haavard Skinnemoenc841bee2006-11-18 17:15:30 +0100269}
270
271void board_init_r(gd_t *new_gd, ulong dest_addr)
272{
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100273 extern void malloc_bin_reloc (void);
Jean-Christophe PLAGNIOL-VILLARD93f6d722008-09-10 22:48:00 +0200274#ifndef CONFIG_ENV_IS_NOWHERE
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100275 extern char * env_name_spec;
276#endif
Haavard Skinnemoene0069272007-11-24 18:15:31 +0100277 char *s;
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100278 cmd_tbl_t *cmdtp;
279 bd_t *bd;
280
Haavard Skinnemoenc841bee2006-11-18 17:15:30 +0100281 gd = new_gd;
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100282 bd = gd->bd;
283
284 gd->flags |= GD_FLG_RELOC;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200285 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
Haavard Skinnemoenc841bee2006-11-18 17:15:30 +0100286
Haavard Skinnemoen25e68542008-08-31 18:46:35 +0200287 board_early_init_r();
288
Haavard Skinnemoenc841bee2006-11-18 17:15:30 +0100289 monitor_flash_len = _edata - _text;
290
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100291 /*
292 * We have to relocate the command table manually
293 */
294 for (cmdtp = &__u_boot_cmd_start;
295 cmdtp != &__u_boot_cmd_end; cmdtp++) {
296 unsigned long addr;
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200297
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100298 addr = (unsigned long)cmdtp->cmd + gd->reloc_off;
299 cmdtp->cmd = (typeof(cmdtp->cmd))addr;
300
301 addr = (unsigned long)cmdtp->name + gd->reloc_off;
302 cmdtp->name = (typeof(cmdtp->name))addr;
303
304 if (cmdtp->usage) {
305 addr = (unsigned long)cmdtp->usage + gd->reloc_off;
306 cmdtp->usage = (typeof(cmdtp->usage))addr;
307 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200308#ifdef CONFIG_SYS_LONGHELP
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100309 if (cmdtp->help) {
310 addr = (unsigned long)cmdtp->help + gd->reloc_off;
311 cmdtp->help = (typeof(cmdtp->help))addr;
312 }
313#endif
314 }
315
316 /* there are some other pointer constants we must deal with */
Jean-Christophe PLAGNIOL-VILLARD93f6d722008-09-10 22:48:00 +0200317#ifndef CONFIG_ENV_IS_NOWHERE
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100318 env_name_spec += gd->reloc_off;
319#endif
320
321 timer_init();
322 mem_malloc_init();
323 malloc_bin_reloc();
Haavard Skinnemoend5acb952006-12-17 15:39:15 +0100324 dma_alloc_init();
Haavard Skinnemoen7b624ad2007-10-06 18:55:35 +0200325
Haavard Skinnemoenacac4752007-12-14 16:51:22 +0100326 enable_interrupts();
327
Haavard Skinnemoen7b624ad2007-10-06 18:55:35 +0200328 bd->bi_flashstart = 0;
329 bd->bi_flashsize = 0;
330 bd->bi_flashoffset = 0;
331
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200332#ifndef CONFIG_SYS_NO_FLASH
333 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
Haavard Skinnemoen7b624ad2007-10-06 18:55:35 +0200334 bd->bi_flashsize = flash_init();
335 bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200336
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100337 if (bd->bi_flashsize)
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200338 display_flash_config();
Haavard Skinnemoen7b624ad2007-10-06 18:55:35 +0200339#endif
340
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +0100341 if (bd->bi_dram[0].size)
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200342 display_dram_config();
343
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200344 gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200345 if (!gd->bd->bi_boot_params)
346 puts("WARNING: Cannot allocate space for boot parameters\n");
347
348 /* initialize environment */
349 env_relocate();
350
Haavard Skinnemoene0069272007-11-24 18:15:31 +0100351 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
352
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200353 devices_init();
354 jumptable_init();
355 console_init_r();
356
Haavard Skinnemoene0069272007-11-24 18:15:31 +0100357 s = getenv("loadaddr");
358 if (s)
359 load_addr = simple_strtoul(s, NULL, 16);
360
Jon Loeliger67350562007-07-09 18:05:38 -0500361#if defined(CONFIG_CMD_NET)
Haavard Skinnemoene0069272007-11-24 18:15:31 +0100362 s = getenv("bootfile");
363 if (s)
364 copy_filename(BootFile, s, sizeof(BootFile));
Haavard Skinnemoen9a24f472006-12-17 17:14:30 +0100365#if defined(CONFIG_NET_MULTI)
366 puts("Net: ");
367#endif
368 eth_initialize(gd->bd);
369#endif
370
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200371 for (;;) {
372 main_loop();
373 }
374}