blob: 62afbd24974b1a7129d2c66458993d902f2e2f3b [file] [log] [blame]
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 <image.h>
25#include <zlib.h>
26#include <asm/byteorder.h>
27#include <asm/addrspace.h>
28#include <asm/io.h>
29#include <asm/setup.h>
Haavard Skinnemoendf548d32006-11-19 18:06:53 +010030#include <asm/arch/clk.h>
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020031
32DECLARE_GLOBAL_DATA_PTR;
33
34extern int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
35
36/* CPU-specific hook to allow flushing of caches, etc. */
37extern void prepare_to_boot(void);
38
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020039extern image_header_t header; /* from cmd_bootm.c */
40
41static struct tag *setup_start_tag(struct tag *params)
42{
43 params->hdr.tag = ATAG_CORE;
44 params->hdr.size = tag_size(tag_core);
45
46 params->u.core.flags = 0;
47 params->u.core.pagesize = 4096;
48 params->u.core.rootdev = 0;
49
50 return tag_next(params);
51}
52
53static struct tag *setup_memory_tags(struct tag *params)
54{
55 bd_t *bd = gd->bd;
56 int i;
57
58 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
59 params->hdr.tag = ATAG_MEM;
60 params->hdr.size = tag_size(tag_mem_range);
61
62 params->u.mem_range.addr = bd->bi_dram[i].start;
63 params->u.mem_range.size = bd->bi_dram[i].size;
64
65 params = tag_next(params);
66 }
67
68 return params;
69}
70
71static struct tag *setup_commandline_tag(struct tag *params, char *cmdline)
72{
73 if (!cmdline)
74 return params;
75
76 /* eat leading white space */
77 while (*cmdline == ' ') cmdline++;
78
79 /*
80 * Don't include tags for empty command lines; let the kernel
81 * use its default command line.
82 */
83 if (*cmdline == '\0')
84 return params;
85
86 params->hdr.tag = ATAG_CMDLINE;
87 params->hdr.size =
88 (sizeof (struct tag_header) + strlen(cmdline) + 1 + 3) >> 2;
89 strcpy(params->u.cmdline.cmdline, cmdline);
90
91 return tag_next(params);
92}
93
94static struct tag *setup_ramdisk_tag(struct tag *params,
95 unsigned long rd_start,
96 unsigned long rd_end)
97{
98 if (rd_start == rd_end)
99 return params;
100
101 params->hdr.tag = ATAG_RDIMG;
102 params->hdr.size = tag_size(tag_mem_range);
103
104 params->u.mem_range.addr = rd_start;
105 params->u.mem_range.size = rd_end - rd_start;
106
107 return tag_next(params);
108}
109
110static struct tag *setup_clock_tags(struct tag *params)
111{
112 params->hdr.tag = ATAG_CLOCK;
113 params->hdr.size = tag_size(tag_clock);
114 params->u.clock.clock_id = ACLOCK_BOOTCPU;
115 params->u.clock.clock_flags = 0;
116 params->u.clock.clock_hz = gd->cpu_hz;
117
118#ifdef CONFIG_AT32AP7000
119 /*
120 * New kernels don't need this, but we should be backwards
121 * compatible for a while...
122 */
123 params = tag_next(params);
124
125 params->hdr.tag = ATAG_CLOCK;
126 params->hdr.size = tag_size(tag_clock);
127 params->u.clock.clock_id = ACLOCK_HSB;
128 params->u.clock.clock_flags = 0;
Haavard Skinnemoendf548d32006-11-19 18:06:53 +0100129 params->u.clock.clock_hz = get_hsb_clk_rate();
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200130#endif
131
132 return tag_next(params);
133}
134
135static struct tag *setup_ethernet_tag(struct tag *params,
136 char *addr, int index)
137{
138 char *s, *e;
139 int i;
140
141 params->hdr.tag = ATAG_ETHERNET;
142 params->hdr.size = tag_size(tag_ethernet);
143
144 params->u.ethernet.mac_index = index;
145 params->u.ethernet.mii_phy_addr = gd->bd->bi_phy_id[index];
146
147 s = addr;
148 for (i = 0; i < 6; i++) {
149 params->u.ethernet.hw_address[i] = simple_strtoul(s, &e, 16);
150 s = e + 1;
151 }
152
153 return tag_next(params);
154}
155
156static struct tag *setup_ethernet_tags(struct tag *params)
157{
158 char name[16] = "ethaddr";
159 char *addr;
160 int i = 0;
161
162 do {
163 addr = getenv(name);
164 if (addr)
165 params = setup_ethernet_tag(params, addr, i);
166 sprintf(name, "eth%daddr", ++i);
167 } while (i < 4);
168
169 return params;
170}
171
172static void setup_end_tag(struct tag *params)
173{
174 params->hdr.tag = ATAG_NONE;
175 params->hdr.size = 0;
176}
177
178void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
179 unsigned long addr, unsigned long *len_ptr, int verify)
180{
181 unsigned long data, len = 0;
182 unsigned long initrd_start, initrd_end;
183 unsigned long image_start, image_end;
184 unsigned long checksum;
185 void (*theKernel)(int magic, void *tagtable);
186 image_header_t *hdr;
187 struct tag *params, *params_start;
188 char *commandline = getenv("bootargs");
189
190 hdr = (image_header_t *)addr;
191 image_start = addr;
192 image_end = addr + hdr->ih_size;
193
194 theKernel = (void *)ntohl(hdr->ih_ep);
195
196 /*
197 * Check if there is an initrd image
198 */
199 if (argc >= 3) {
Heiko Schocherfad63402007-07-13 09:54:17 +0200200 show_boot_progress (9);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200201
202 addr = simple_strtoul(argv[2], NULL, 16);
203
204 printf("## Loading RAMDISK image at %08lx ...\n", addr);
205
206 memcpy(&header, (char *)addr, sizeof(header));
207 hdr = &header;
208
209 if (ntohl(hdr->ih_magic) != IH_MAGIC) {
210 puts("Bad Magic Number\n");
Heiko Schocherfad63402007-07-13 09:54:17 +0200211 show_boot_progress (-10);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200212 do_reset(cmdtp, flag, argc, argv);
213 }
214
215 data = (unsigned long)hdr;
216 len = sizeof(*hdr);
217 checksum = ntohl(hdr->ih_hcrc);
218 hdr->ih_hcrc = 0;
219
220 if (crc32(0, (unsigned char *)data, len) != checksum) {
221 puts("Bad Header Checksum\n");
Heiko Schocherfad63402007-07-13 09:54:17 +0200222 show_boot_progress (-11);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200223 do_reset(cmdtp, flag, argc, argv);
224 }
225
Heiko Schocherfad63402007-07-13 09:54:17 +0200226 show_boot_progress (10);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200227
228 print_image_hdr(hdr);
229
230 data = addr + sizeof(header);
231 len = ntohl(hdr->ih_size);
232
233 if (verify) {
234 unsigned long csum = 0;
235
236 puts(" Verifying Checksum ... ");
237 csum = crc32(0, (unsigned char *)data, len);
238 if (csum != ntohl(hdr->ih_dcrc)) {
239 puts("Bad Data CRC\n");
Heiko Schocherfad63402007-07-13 09:54:17 +0200240 show_boot_progress (-12);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200241 do_reset(cmdtp, flag, argc, argv);
242 }
243 puts("OK\n");
244 }
245
Heiko Schocherfad63402007-07-13 09:54:17 +0200246 show_boot_progress (11);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200247
248 if ((hdr->ih_os != IH_OS_LINUX) ||
249 (hdr->ih_arch != IH_CPU_AVR32) ||
250 (hdr->ih_type != IH_TYPE_RAMDISK)) {
251 puts("Not a Linux/AVR32 RAMDISK image\n");
Heiko Schocherfad63402007-07-13 09:54:17 +0200252 show_boot_progress (-13);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200253 do_reset(cmdtp, flag, argc, argv);
254 }
255 } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
256 ulong tail = ntohl (len_ptr[0]) % 4;
257 int i;
258
Heiko Schocherfad63402007-07-13 09:54:17 +0200259 show_boot_progress (13);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200260
261 /* skip kernel length and terminator */
262 data = (ulong) (&len_ptr[2]);
263 /* skip any additional image length fields */
264 for (i = 1; len_ptr[i]; ++i)
265 data += 4;
266 /* add kernel length, and align */
267 data += ntohl (len_ptr[0]);
268 if (tail) {
269 data += 4 - tail;
270 }
271
272 len = ntohl (len_ptr[1]);
273 } else {
274 /* no initrd image */
Heiko Schocherfad63402007-07-13 09:54:17 +0200275 show_boot_progress (14);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200276 len = data = 0;
277 }
278
279 if (data) {
280 initrd_start = data;
281 initrd_end = initrd_start + len;
282 } else {
283 initrd_start = 0;
284 initrd_end = 0;
285 }
286
Heiko Schocherfad63402007-07-13 09:54:17 +0200287 show_boot_progress (15);
Wolfgang Denk7b64fef2006-10-24 14:21:16 +0200288
289 params = params_start = (struct tag *)gd->bd->bi_boot_params;
290 params = setup_start_tag(params);
291 params = setup_memory_tags(params);
292 if (initrd_start) {
293 params = setup_ramdisk_tag(params,
294 PHYSADDR(initrd_start),
295 PHYSADDR(initrd_end));
296 }
297 params = setup_commandline_tag(params, commandline);
298 params = setup_clock_tags(params);
299 params = setup_ethernet_tags(params);
300 setup_end_tag(params);
301
302 printf("\nStarting kernel at %p (params at %p)...\n\n",
303 theKernel, params_start);
304
305 prepare_to_boot();
306
307 theKernel(ATAG_MAGIC, params_start);
308}