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wdenk458ded32002-09-20 10:59:08 +00001/*
2 * Copyright (c) 2001 William L. Pitts
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms are freely
6 * permitted provided that the above copyright notice and this
7 * paragraph and the following disclaimer are duplicated in all
8 * such forms.
9 *
10 * This software is provided "AS IS" and without any express or
11 * implied warranties, including, without limitation, the implied
12 * warranties of merchantability and fitness for a particular
13 * purpose.
14 */
15
16#include <common.h>
17#include <command.h>
18#include <linux/ctype.h>
19#include <net.h>
wdenk458ded32002-09-20 10:59:08 +000020#include <elf.h>
21
Wolfgang Denkd87080b2006-03-31 18:32:53 +020022#if defined(CONFIG_WALNUT) || defined(CFG_VXWORKS_MAC_PTR)
23DECLARE_GLOBAL_DATA_PTR;
24#endif
wdenk458ded32002-09-20 10:59:08 +000025
26#if (CONFIG_COMMANDS & CFG_CMD_ELF)
27
28#ifndef MAX
29#define MAX(a,b) ((a) > (b) ? (a) : (b))
30#endif
31
wdenk8bde7f72003-06-27 21:31:46 +000032int valid_elf_image (unsigned long addr);
33unsigned long load_elf_image (unsigned long addr);
wdenk458ded32002-09-20 10:59:08 +000034
35/* ======================================================================
36 * Interpreter command to boot an arbitrary ELF image from memory.
37 * ====================================================================== */
38int do_bootelf (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
39{
40 unsigned long addr; /* Address of the ELF image */
41 unsigned long rc; /* Return value from user code */
42
43 /* -------------------------------------------------- */
44 int rcode = 0;
45
46 if (argc < 2)
47 addr = load_addr;
48 else
49 addr = simple_strtoul (argv[1], NULL, 16);
50
51 if (!valid_elf_image (addr))
52 return 1;
53
54 addr = load_elf_image (addr);
55
56 printf ("## Starting application at 0x%08lx ...\n", addr);
57
58 /*
59 * QNX images require the data cache is disabled.
60 * Data cache is already flushed, so just turn it off.
61 */
62 if (dcache_status ())
63 dcache_disable ();
64
65 /*
66 * pass address parameter as argv[0] (aka command name),
67 * and all remaining args
68 */
69 rc = ((ulong (*)(int, char *[])) addr) (--argc, &argv[1]);
70 if (rc != 0)
71 rcode = 1;
72
73 printf ("## Application terminated, rc = 0x%lx\n", rc);
74 return rcode;
75}
76
77/* ======================================================================
78 * Interpreter command to boot VxWorks from a memory image. The image can
79 * be either an ELF image or a raw binary. Will attempt to setup the
80 * bootline and other parameters correctly.
81 * ====================================================================== */
Stefan Roese1bdd4682006-11-29 12:53:15 +010082int do_bootvx (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
wdenk458ded32002-09-20 10:59:08 +000083{
wdenk458ded32002-09-20 10:59:08 +000084 unsigned long addr; /* Address of image */
85 unsigned long bootaddr; /* Address to put the bootline */
86 char *bootline; /* Text of the bootline */
87 char *tmp; /* Temporary char pointer */
88
89#if defined(CONFIG_4xx) || defined(CONFIG_IOP480)
90 char build_buf[80]; /* Buffer for building the bootline */
91#endif
92 /* -------------------------------------------------- */
93
94 /*
95 * Check the loadaddr variable.
96 * If we don't know where the image is then we're done.
97 */
98
Stefan Roese1bdd4682006-11-29 12:53:15 +010099 if (argc < 2)
100 addr = load_addr;
101 else
102 addr = simple_strtoul (argv[1], NULL, 16);
wdenk458ded32002-09-20 10:59:08 +0000103
104#if (CONFIG_COMMANDS & CFG_CMD_NET)
105 /* Check to see if we need to tftp the image ourselves before starting */
106
107 if ((argc == 2) && (strcmp (argv[1], "tftp") == 0)) {
wdenkeb9401e2002-11-11 02:11:37 +0000108 if (NetLoop (TFTP) <= 0)
wdenk458ded32002-09-20 10:59:08 +0000109 return 1;
110 printf ("Automatic boot of VxWorks image at address 0x%08lx ... \n", addr);
111 }
112#endif
113
114 /* This should equate
115 * to NV_RAM_ADRS + NV_BOOT_OFFSET + NV_ENET_OFFSET
116 * from the VxWorks BSP header files.
117 * This will vary from board to board
118 */
119
Stefan Roesec157d8e2005-08-01 16:41:48 +0200120#if defined(CONFIG_WALNUT)
wdenk458ded32002-09-20 10:59:08 +0000121 tmp = (char *) CFG_NVRAM_BASE_ADDR + 0x500;
122 memcpy ((char *) tmp, (char *) &gd->bd->bi_enetaddr[3], 3);
stroese1cdf5d92004-12-16 17:37:54 +0000123#elif defined(CFG_VXWORKS_MAC_PTR)
124 tmp = (char *) CFG_VXWORKS_MAC_PTR;
wdenk458ded32002-09-20 10:59:08 +0000125 memcpy ((char *) tmp, (char *) &gd->bd->bi_enetaddr[0], 6);
126#else
wdenk4b9206e2004-03-23 22:14:11 +0000127 puts ("## Ethernet MAC address not copied to NV RAM\n");
wdenk458ded32002-09-20 10:59:08 +0000128#endif
129
wdenk8bde7f72003-06-27 21:31:46 +0000130 /*
131 * Use bootaddr to find the location in memory that VxWorks
132 * will look for the bootline string. The default value for
133 * PowerPC is LOCAL_MEM_LOCAL_ADRS + BOOT_LINE_OFFSET which
134 * defaults to 0x4200
wdenk458ded32002-09-20 10:59:08 +0000135 */
136
137 if ((tmp = getenv ("bootaddr")) == NULL)
138 bootaddr = 0x4200;
139 else
140 bootaddr = simple_strtoul (tmp, NULL, 16);
141
wdenk8bde7f72003-06-27 21:31:46 +0000142 /*
143 * Check to see if the bootline is defined in the 'bootargs'
144 * parameter. If it is not defined, we may be able to
145 * construct the info
wdenk458ded32002-09-20 10:59:08 +0000146 */
147
148 if ((bootline = getenv ("bootargs")) != NULL) {
149 memcpy ((void *) bootaddr, bootline, MAX(strlen(bootline), 255));
150 flush_cache (bootaddr, MAX(strlen(bootline), 255));
151 } else {
152#if defined(CONFIG_4xx)
153 sprintf (build_buf, "ibmEmac(0,0)");
154
155 if ((tmp = getenv ("hostname")) != NULL) {
156 sprintf (&build_buf[strlen (build_buf - 1)],
157 "host:%s ", tmp);
158 } else {
159 sprintf (&build_buf[strlen (build_buf - 1)],
160 ": ");
161 }
162
163 if ((tmp = getenv ("ipaddr")) != NULL) {
164 sprintf (&build_buf[strlen (build_buf - 1)],
165 "e=%s ", tmp);
166 }
167 memcpy ((void *)bootaddr, build_buf, MAX(strlen(build_buf), 255));
168 flush_cache (bootaddr, MAX(strlen(build_buf), 255));
169#elif defined(CONFIG_IOP480)
170 sprintf (build_buf, "dc(0,0)");
171
172 if ((tmp = getenv ("hostname")) != NULL) {
173 sprintf (&build_buf[strlen (build_buf - 1)],
174 "host:%s ", tmp);
175 } else {
176 sprintf (&build_buf[strlen (build_buf - 1)],
177 ": ");
178 }
179
180 if ((tmp = getenv ("ipaddr")) != NULL) {
181 sprintf (&build_buf[strlen (build_buf - 1)],
182 "e=%s ", tmp);
183 }
184 memcpy ((void *) bootaddr, build_buf, MAX(strlen(build_buf), 255));
185 flush_cache (bootaddr, MAX(strlen(build_buf), 255));
186#else
187
wdenk8bde7f72003-06-27 21:31:46 +0000188 /*
189 * I'm not sure what the device should be for other
190 * PPC flavors, the hostname and ipaddr should be ok
191 * to just copy
wdenk458ded32002-09-20 10:59:08 +0000192 */
193
wdenk4b9206e2004-03-23 22:14:11 +0000194 puts ("No bootargs defined\n");
wdenk458ded32002-09-20 10:59:08 +0000195 return 1;
196#endif
197 }
198
wdenk8bde7f72003-06-27 21:31:46 +0000199 /*
200 * If the data at the load address is an elf image, then
201 * treat it like an elf image. Otherwise, assume that it is a
202 * binary image
wdenk458ded32002-09-20 10:59:08 +0000203 */
204
205 if (valid_elf_image (addr)) {
206 addr = load_elf_image (addr);
207 } else {
wdenk4b9206e2004-03-23 22:14:11 +0000208 puts ("## Not an ELF image, assuming binary\n");
wdenk458ded32002-09-20 10:59:08 +0000209 /* leave addr as load_addr */
210 }
211
212 printf ("## Using bootline (@ 0x%lx): %s\n", bootaddr,
213 (char *) bootaddr);
214 printf ("## Starting vxWorks at 0x%08lx ...\n", addr);
215
216 ((void (*)(void)) addr) ();
217
wdenk4b9206e2004-03-23 22:14:11 +0000218 puts ("## vxWorks terminated\n");
wdenk458ded32002-09-20 10:59:08 +0000219 return 1;
220}
221
222/* ======================================================================
223 * Determine if a valid ELF image exists at the given memory location.
224 * First looks at the ELF header magic field, the makes sure that it is
225 * executable and makes sure that it is for a PowerPC.
226 * ====================================================================== */
227int valid_elf_image (unsigned long addr)
228{
229 Elf32_Ehdr *ehdr; /* Elf header structure pointer */
230
231 /* -------------------------------------------------- */
232
233 ehdr = (Elf32_Ehdr *) addr;
234
235 if (!IS_ELF (*ehdr)) {
236 printf ("## No elf image at address 0x%08lx\n", addr);
237 return 0;
238 }
239
240 if (ehdr->e_type != ET_EXEC) {
241 printf ("## Not a 32-bit elf image at address 0x%08lx\n",
242 addr);
243 return 0;
244 }
245
wdenk6069ff22003-02-28 00:49:47 +0000246#if 0
wdenk458ded32002-09-20 10:59:08 +0000247 if (ehdr->e_machine != EM_PPC) {
248 printf ("## Not a PowerPC elf image at address 0x%08lx\n",
249 addr);
250 return 0;
251 }
wdenk6069ff22003-02-28 00:49:47 +0000252#endif
wdenk458ded32002-09-20 10:59:08 +0000253
254 return 1;
255}
256
257
258/* ======================================================================
259 * A very simple elf loader, assumes the image is valid, returns the
260 * entry point address.
261 * ====================================================================== */
262unsigned long load_elf_image (unsigned long addr)
263{
264 Elf32_Ehdr *ehdr; /* Elf header structure pointer */
265 Elf32_Shdr *shdr; /* Section header structure pointer */
266 unsigned char *strtab = 0; /* String table pointer */
267 unsigned char *image; /* Binary image pointer */
268 int i; /* Loop counter */
269
270 /* -------------------------------------------------- */
271
272 ehdr = (Elf32_Ehdr *) addr;
273
274 /* Find the section header string table for output info */
275 shdr = (Elf32_Shdr *) (addr + ehdr->e_shoff +
276 (ehdr->e_shstrndx * sizeof (Elf32_Shdr)));
277
278 if (shdr->sh_type == SHT_STRTAB)
279 strtab = (unsigned char *) (addr + shdr->sh_offset);
280
281 /* Load each appropriate section */
282 for (i = 0; i < ehdr->e_shnum; ++i) {
283 shdr = (Elf32_Shdr *) (addr + ehdr->e_shoff +
284 (i * sizeof (Elf32_Shdr)));
285
286 if (!(shdr->sh_flags & SHF_ALLOC)
287 || shdr->sh_addr == 0 || shdr->sh_size == 0) {
288 continue;
289 }
290
291 if (strtab) {
292 printf ("%sing %s @ 0x%08lx (%ld bytes)\n",
293 (shdr->sh_type == SHT_NOBITS) ?
294 "Clear" : "Load",
295 &strtab[shdr->sh_name],
296 (unsigned long) shdr->sh_addr,
297 (long) shdr->sh_size);
298 }
299
300 if (shdr->sh_type == SHT_NOBITS) {
301 memset ((void *)shdr->sh_addr, 0, shdr->sh_size);
302 } else {
303 image = (unsigned char *) addr + shdr->sh_offset;
304 memcpy ((void *) shdr->sh_addr,
305 (const void *) image,
306 shdr->sh_size);
307 }
308 flush_cache (shdr->sh_addr, shdr->sh_size);
309 }
310
311 return ehdr->e_entry;
312}
313
314/* ====================================================================== */
wdenk0d498392003-07-01 21:06:45 +0000315U_BOOT_CMD(
316 bootelf, 2, 0, do_bootelf,
wdenk8bde7f72003-06-27 21:31:46 +0000317 "bootelf - Boot from an ELF image in memory\n",
318 " [address] - load address of ELF image.\n"
319);
320
wdenk0d498392003-07-01 21:06:45 +0000321U_BOOT_CMD(
322 bootvx, 2, 0, do_bootvx,
wdenk8bde7f72003-06-27 21:31:46 +0000323 "bootvx - Boot vxWorks from an ELF image\n",
324 " [address] - load address of vxWorks ELF image.\n"
325);
326
wdenk458ded32002-09-20 10:59:08 +0000327#endif /* CFG_CMD_ELF */