[u-boot.git] / cmd / elf.c

/*
 * Copyright (c) 2001 William L. Pitts
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are freely
 * permitted provided that the above copyright notice and this
 * paragraph and the following disclaimer are duplicated in all
 * such forms.
 *
 * This software is provided "AS IS" and without any express or
 * implied warranties, including, without limitation, the implied
 * warranties of merchantability and fitness for a particular
 * purpose.
 */

#include <common.h>
#include <command.h>
#include <elf.h>
#include <net.h>
#include <vxworks.h>
#ifdef CONFIG_X86
#include <asm/e820.h>
#include <linux/linkage.h>
#endif

/*
 * A very simple elf loader, assumes the image is valid, returns the
 * entry point address.
 */
static unsigned long load_elf_image_phdr(unsigned long addr)
{
	Elf32_Ehdr *ehdr; /* Elf header structure pointer */
	Elf32_Phdr *phdr; /* Program header structure pointer */
	int i;

	ehdr = (Elf32_Ehdr *)addr;
	phdr = (Elf32_Phdr *)(addr + ehdr->e_phoff);

	/* Load each program header */
	for (i = 0; i < ehdr->e_phnum; ++i) {
		void *dst = (void *)(uintptr_t)phdr->p_paddr;
		void *src = (void *)addr + phdr->p_offset;
		debug("Loading phdr %i to 0x%p (%i bytes)\n",
		      i, dst, phdr->p_filesz);
		if (phdr->p_filesz)
			memcpy(dst, src, phdr->p_filesz);
		if (phdr->p_filesz != phdr->p_memsz)
			memset(dst + phdr->p_filesz, 0x00,
			       phdr->p_memsz - phdr->p_filesz);
		flush_cache((unsigned long)dst, phdr->p_filesz);
		++phdr;
	}

	return ehdr->e_entry;
}

static unsigned long load_elf_image_shdr(unsigned long addr)
{
	Elf32_Ehdr *ehdr; /* Elf header structure pointer */
	Elf32_Shdr *shdr; /* Section header structure pointer */
	unsigned char *strtab = 0; /* String table pointer */
	unsigned char *image; /* Binary image pointer */
	int i; /* Loop counter */

	ehdr = (Elf32_Ehdr *)addr;

	/* Find the section header string table for output info */
	shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
			     (ehdr->e_shstrndx * sizeof(Elf32_Shdr)));

	if (shdr->sh_type == SHT_STRTAB)
		strtab = (unsigned char *)(addr + shdr->sh_offset);

	/* Load each appropriate section */
	for (i = 0; i < ehdr->e_shnum; ++i) {
		shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
				     (i * sizeof(Elf32_Shdr)));

		if (!(shdr->sh_flags & SHF_ALLOC) ||
		    shdr->sh_addr == 0 || shdr->sh_size == 0) {
			continue;
		}

		if (strtab) {
			debug("%sing %s @ 0x%08lx (%ld bytes)\n",
			      (shdr->sh_type == SHT_NOBITS) ? "Clear" : "Load",
			       &strtab[shdr->sh_name],
			       (unsigned long)shdr->sh_addr,
			       (long)shdr->sh_size);
		}

		if (shdr->sh_type == SHT_NOBITS) {
			memset((void *)(uintptr_t)shdr->sh_addr, 0,
			       shdr->sh_size);
		} else {
			image = (unsigned char *)addr + shdr->sh_offset;
			memcpy((void *)(uintptr_t)shdr->sh_addr,
			       (const void *)image, shdr->sh_size);
		}
		flush_cache(shdr->sh_addr, shdr->sh_size);
	}

	return ehdr->e_entry;
}

/* Allow ports to override the default behavior */
static unsigned long do_bootelf_exec(ulong (*entry)(int, char * const[]),
				     int argc, char * const argv[])
{
	unsigned long ret;

	/*
	 * pass address parameter as argv[0] (aka command name),
	 * and all remaining args
	 */
	ret = entry(argc, argv);

	return ret;
}

/*
 * Determine if a valid ELF image exists at the given memory location.
 * First look at the ELF header magic field, then make sure that it is
 * executable.
 */
int valid_elf_image(unsigned long addr)
{
	Elf32_Ehdr *ehdr; /* Elf header structure pointer */

	ehdr = (Elf32_Ehdr *)addr;

	if (!IS_ELF(*ehdr)) {
		printf("## No elf image at address 0x%08lx\n", addr);
		return 0;
	}

	if (ehdr->e_type != ET_EXEC) {
		printf("## Not a 32-bit elf image at address 0x%08lx\n", addr);
		return 0;
	}

	return 1;
}

/* Interpreter command to boot an arbitrary ELF image from memory */
int do_bootelf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	unsigned long addr; /* Address of the ELF image */
	unsigned long rc; /* Return value from user code */
	char *sload = NULL;
	const char *ep = env_get("autostart");
	int rcode = 0;

	/* Consume 'bootelf' */
	argc--; argv++;

	/* Check for flag. */
	if (argc >= 1 && (argv[0][0] == '-' && \
				(argv[0][1] == 'p' || argv[0][1] == 's'))) {
		sload = argv[0];
		/* Consume flag. */
		argc--; argv++;
	}
	/* Check for address. */
	if (argc >= 1 && strict_strtoul(argv[0], 16, &addr) != -EINVAL) {
		/* Consume address */
		argc--; argv++;
	} else
		addr = load_addr;

	if (!valid_elf_image(addr))
		return 1;

	if (sload && sload[1] == 'p')
		addr = load_elf_image_phdr(addr);
	else
		addr = load_elf_image_shdr(addr);

	if (ep && !strcmp(ep, "no"))
		return rcode;

	printf("## Starting application at 0x%08lx ...\n", addr);

	/*
	 * pass address parameter as argv[0] (aka command name),
	 * and all remaining args
	 */
	rc = do_bootelf_exec((void *)addr, argc, argv);
	if (rc != 0)
		rcode = 1;

	printf("## Application terminated, rc = 0x%lx\n", rc);

	return rcode;
}

/*
 * Interpreter command to boot VxWorks from a memory image.  The image can
 * be either an ELF image or a raw binary.  Will attempt to setup the
 * bootline and other parameters correctly.
 */
int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	unsigned long addr; /* Address of image */
	unsigned long bootaddr; /* Address to put the bootline */
	char *bootline; /* Text of the bootline */
	char *tmp; /* Temporary char pointer */
	char build_buf[128]; /* Buffer for building the bootline */
	int ptr = 0;
#ifdef CONFIG_X86
	struct e820info *info;
	struct e820entry *data;
#endif

	/*
	 * Check the loadaddr variable.
	 * If we don't know where the image is then we're done.
	 */
	if (argc < 2)
		addr = load_addr;
	else
		addr = simple_strtoul(argv[1], NULL, 16);

#if defined(CONFIG_CMD_NET)
	/*
	 * Check to see if we need to tftp the image ourselves
	 * before starting
	 */
	if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
		if (net_loop(TFTPGET) <= 0)
			return 1;
		printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",
			addr);
	}
#endif

	/*
	 * This should equate to
	 * NV_RAM_ADRS + NV_BOOT_OFFSET + NV_ENET_OFFSET
	 * from the VxWorks BSP header files.
	 * This will vary from board to board
	 */
#if defined(CONFIG_WALNUT)
	tmp = (char *)CONFIG_SYS_NVRAM_BASE_ADDR + 0x500;
	eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
	memcpy(tmp, &build_buf[3], 3);
#elif defined(CONFIG_SYS_VXWORKS_MAC_PTR)
	tmp = (char *)CONFIG_SYS_VXWORKS_MAC_PTR;
	eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
	memcpy(tmp, build_buf, 6);
#else
	puts("## Ethernet MAC address not copied to NV RAM\n");
#endif

	/*
	 * Use bootaddr to find the location in memory that VxWorks
	 * will look for the bootline string. The default value is
	 * (LOCAL_MEM_LOCAL_ADRS + BOOT_LINE_OFFSET) as defined by
	 * VxWorks BSP. For example, on PowerPC it defaults to 0x4200.
	 */
	tmp = env_get("bootaddr");
	if (!tmp) {
		printf("## VxWorks bootline address not specified\n");
	} else {
		bootaddr = simple_strtoul(tmp, NULL, 16);

		/*
		 * Check to see if the bootline is defined in the 'bootargs'
		 * parameter. If it is not defined, we may be able to
		 * construct the info.
		 */
		bootline = env_get("bootargs");
		if (bootline) {
			memcpy((void *)bootaddr, bootline,
			       max(strlen(bootline), (size_t)255));
			flush_cache(bootaddr, max(strlen(bootline),
						  (size_t)255));
		} else {
			tmp = env_get("bootdev");
			if (tmp) {
				strcpy(build_buf, tmp);
				ptr = strlen(tmp);
			} else
				printf("## VxWorks boot device not specified\n");

			tmp = env_get("bootfile");
			if (tmp)
				ptr += sprintf(build_buf + ptr,
					       "host:%s ", tmp);
			else
				ptr += sprintf(build_buf + ptr,
					       "host:vxWorks ");

			/*
			 * The following parameters are only needed if 'bootdev'
			 * is an ethernet device, otherwise they are optional.
			 */
			tmp = env_get("ipaddr");
			if (tmp) {
				ptr += sprintf(build_buf + ptr, "e=%s", tmp);
				tmp = env_get("netmask");
				if (tmp) {
					u32 mask = env_get_ip("netmask").s_addr;
					ptr += sprintf(build_buf + ptr,
						       ":%08x ", ntohl(mask));
				} else {
					ptr += sprintf(build_buf + ptr, " ");
				}
			}

			tmp = env_get("serverip");
			if (tmp)
				ptr += sprintf(build_buf + ptr, "h=%s ", tmp);

			tmp = env_get("gatewayip");
			if (tmp)
				ptr += sprintf(build_buf + ptr, "g=%s ", tmp);

			tmp = env_get("hostname");
			if (tmp)
				ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);

			tmp = env_get("othbootargs");
			if (tmp) {
				strcpy(build_buf + ptr, tmp);
				ptr += strlen(tmp);
			}

			memcpy((void *)bootaddr, build_buf,
			       max(strlen(build_buf), (size_t)255));
			flush_cache(bootaddr, max(strlen(build_buf),
						  (size_t)255));
		}

		printf("## Using bootline (@ 0x%lx): %s\n", bootaddr,
		       (char *)bootaddr);
	}

#ifdef CONFIG_X86
	/*
	 * Since E820 information is critical to the kernel, if we don't
	 * specify these in the environments, use a default one.
	 */
	tmp = env_get("e820data");
	if (tmp)
		data = (struct e820entry *)simple_strtoul(tmp, NULL, 16);
	else
		data = (struct e820entry *)VXWORKS_E820_DATA_ADDR;
	tmp = env_get("e820info");
	if (tmp)
		info = (struct e820info *)simple_strtoul(tmp, NULL, 16);
	else
		info = (struct e820info *)VXWORKS_E820_INFO_ADDR;

	memset(info, 0, sizeof(struct e820info));
	info->sign = E820_SIGNATURE;
	info->entries = install_e820_map(E820MAX, data);
	info->addr = (info->entries - 1) * sizeof(struct e820entry) +
		     VXWORKS_E820_DATA_ADDR;
#endif

	/*
	 * If the data at the load address is an elf image, then
	 * treat it like an elf image. Otherwise, assume that it is a
	 * binary image.
	 */
	if (valid_elf_image(addr))
		addr = load_elf_image_shdr(addr);
	else
		puts("## Not an ELF image, assuming binary\n");

	printf("## Starting vxWorks at 0x%08lx ...\n", addr);

	dcache_disable();
#ifdef CONFIG_X86
	/* VxWorks on x86 uses stack to pass parameters */
	((asmlinkage void (*)(int))addr)(0);
#else
	((void (*)(int))addr)(0);
#endif

	puts("## vxWorks terminated\n");

	return 1;
}

U_BOOT_CMD(
	bootelf, CONFIG_SYS_MAXARGS, 0, do_bootelf,
	"Boot from an ELF image in memory",
	"[-p|-s] [address]\n"
	"\t- load ELF image at [address] via program headers (-p)\n"
	"\t  or via section headers (-s)"
);

U_BOOT_CMD(
	bootvx, 2, 0, do_bootvx,
	"Boot vxWorks from an ELF image",
	" [address] - load address of vxWorks ELF image."
);
Commit	Line	Data
458ded34 WD	1	/*
	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>
458ded34	18	#include <elf.h>
ebca3df7	19	#include <net.h>
29a4c24d	20	#include <vxworks.h>
b90ff0fd BM	21	#ifdef CONFIG_X86
b90ff0fd BM	22	#include <asm/e820.h>
9aa1280a	23	#include <linux/linkage.h>
b90ff0fd	24	#endif
458ded34	25
9dffa52d BM	26	/*
	27	* A very simple elf loader, assumes the image is valid, returns the
	28	* entry point address.
	29	*/
	30	static unsigned long load_elf_image_phdr(unsigned long addr)
	31	{
	32	Elf32_Ehdr ehdr; / Elf header structure pointer */
	33	Elf32_Phdr phdr; / Program header structure pointer */
	34	int i;
	35
	36	ehdr = (Elf32_Ehdr *)addr;
	37	phdr = (Elf32_Phdr *)(addr + ehdr->e_phoff);
	38
	39	/* Load each program header */
	40	for (i = 0; i < ehdr->e_phnum; ++i) {
	41	void dst = (void )(uintptr_t)phdr->p_paddr;
	42	void src = (void )addr + phdr->p_offset;
	43	debug("Loading phdr %i to 0x%p (%i bytes)\n",
	44	i, dst, phdr->p_filesz);
	45	if (phdr->p_filesz)
	46	memcpy(dst, src, phdr->p_filesz);
	47	if (phdr->p_filesz != phdr->p_memsz)
	48	memset(dst + phdr->p_filesz, 0x00,
	49	phdr->p_memsz - phdr->p_filesz);
	50	flush_cache((unsigned long)dst, phdr->p_filesz);
	51	++phdr;
	52	}
	53
	54	return ehdr->e_entry;
	55	}
	56
	57	static unsigned long load_elf_image_shdr(unsigned long addr)
	58	{
	59	Elf32_Ehdr ehdr; / Elf header structure pointer */
	60	Elf32_Shdr shdr; / Section header structure pointer */
	61	unsigned char strtab = 0; / String table pointer */
	62	unsigned char image; / Binary image pointer */
	63	int i; /* Loop counter */
	64
	65	ehdr = (Elf32_Ehdr *)addr;
	66
	67	/* Find the section header string table for output info */
	68	shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
	69	(ehdr->e_shstrndx * sizeof(Elf32_Shdr)));
	70
	71	if (shdr->sh_type == SHT_STRTAB)
	72	strtab = (unsigned char *)(addr + shdr->sh_offset);
	73
	74	/* Load each appropriate section */
	75	for (i = 0; i < ehdr->e_shnum; ++i) {
	76	shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
	77	(i * sizeof(Elf32_Shdr)));
	78
	79	if (!(shdr->sh_flags & SHF_ALLOC) \|\|
	80	shdr->sh_addr == 0 \|\| shdr->sh_size == 0) {
	81	continue;
	82	}
	83
	84	if (strtab) {
	85	debug("%sing %s @ 0x%08lx (%ld bytes)\n",
	86	(shdr->sh_type == SHT_NOBITS) ? "Clear" : "Load",
	87	&strtab[shdr->sh_name],
	88	(unsigned long)shdr->sh_addr,
	89	(long)shdr->sh_size);
90	}
91
92	if (shdr->sh_type == SHT_NOBITS) {
93	memset((void *)(uintptr_t)shdr->sh_addr, 0,
94	shdr->sh_size);
95	} else {
96	image = (unsigned char *)addr + shdr->sh_offset;
97	memcpy((void *)(uintptr_t)shdr->sh_addr,
98	(const void *)image, shdr->sh_size);
99	}
100	flush_cache(shdr->sh_addr, shdr->sh_size);
101	}
102
103	return ehdr->e_entry;
104	}
017e9b79 MF	105
017e9b79 MF	106	/* Allow ports to override the default behavior */
553d8c3a	107	static unsigned long do_bootelf_exec(ulong (entry)(int, char const[]),
ebca3df7	108	int argc, char * const argv[])
1f1d88dd	109	{
017e9b79 MF	110	unsigned long ret;
017e9b79 MF	111
017e9b79 MF	112	/*
	113	* pass address parameter as argv[0] (aka command name),
	114	* and all remaining args
	115	*/
62e03d33	116	ret = entry(argc, argv);
1f1d88dd	117
017e9b79 MF	118	return ret;
017e9b79 MF	119	}
458ded34	120
ebca3df7	121	/*
62e03d33	122	* Determine if a valid ELF image exists at the given memory location.
ebca3df7 BM	123	* First look at the ELF header magic field, then make sure that it is
	124	* executable.
	125	*/
62e03d33 DS	126	int valid_elf_image(unsigned long addr)
62e03d33 DS	127	{
ebca3df7	128	Elf32_Ehdr ehdr; / Elf header structure pointer */
62e03d33	129
ebca3df7	130	ehdr = (Elf32_Ehdr *)addr;
62e03d33 DS	131
	132	if (!IS_ELF(*ehdr)) {
	133	printf("## No elf image at address 0x%08lx\n", addr);
	134	return 0;
	135	}
	136
	137	if (ehdr->e_type != ET_EXEC) {
	138	printf("## Not a 32-bit elf image at address 0x%08lx\n", addr);
	139	return 0;
	140	}
	141
62e03d33 DS	142	return 1;
	143	}
	144
ebca3df7	145	/* Interpreter command to boot an arbitrary ELF image from memory */
62e03d33	146	int do_bootelf(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
458ded34	147	{
ebca3df7 BM	148	unsigned long addr; /* Address of the ELF image */
ebca3df7 BM	149	unsigned long rc; /* Return value from user code */
be1b8679	150	char *sload = NULL;
00caae6d	151	const char *ep = env_get("autostart");
458ded34 WD	152	int rcode = 0;
458ded34 WD	153
be1b8679 TR	154	/* Consume 'bootelf' */
be1b8679 TR	155	argc--; argv++;
f44a928e	156
be1b8679 TR	157	/* Check for flag. */
	158	if (argc >= 1 && (argv[0][0] == '-' && \
	159	(argv[0][1] == 'p' \|\| argv[0][1] == 's'))) {
	160	sload = argv[0];
	161	/* Consume flag. */
	162	argc--; argv++;
	163	}
	164	/* Check for address. */
	165	if (argc >= 1 && strict_strtoul(argv[0], 16, &addr) != -EINVAL) {
	166	/* Consume address */
	167	argc--; argv++;
	168	} else
f44a928e	169	addr = load_addr;
458ded34	170
62e03d33	171	if (!valid_elf_image(addr))
458ded34 WD	172	return 1;
458ded34 WD	173
f44a928e MF	174	if (sload && sload[1] == 'p')
	175	addr = load_elf_image_phdr(addr);
	176	else
	177	addr = load_elf_image_shdr(addr);
458ded34	178
44c8fd3a SDPP	179	if (ep && !strcmp(ep, "no"))
	180	return rcode;
	181
62e03d33	182	printf("## Starting application at 0x%08lx ...\n", addr);
458ded34	183
458ded34 WD	184	/*
	185	* pass address parameter as argv[0] (aka command name),
	186	* and all remaining args
	187	*/
be1b8679	188	rc = do_bootelf_exec((void *)addr, argc, argv);
458ded34 WD	189	if (rc != 0)
	190	rcode = 1;
	191
62e03d33	192	printf("## Application terminated, rc = 0x%lx\n", rc);
ebca3df7	193
458ded34 WD	194	return rcode;
	195	}
	196
ebca3df7	197	/*
458ded34 WD	198	* Interpreter command to boot VxWorks from a memory image. The image can
	199	* be either an ELF image or a raw binary. Will attempt to setup the
	200	* bootline and other parameters correctly.
ebca3df7	201	*/
62e03d33	202	int do_bootvx(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
458ded34	203	{
ebca3df7 BM	204	unsigned long addr; /* Address of image */
	205	unsigned long bootaddr; /* Address to put the bootline */
	206	char bootline; / Text of the bootline */
	207	char tmp; / Temporary char pointer */
	208	char build_buf[128]; /* Buffer for building the bootline */
7f0c3c51	209	int ptr = 0;
b90ff0fd BM	210	#ifdef CONFIG_X86
	211	struct e820info *info;
	212	struct e820entry *data;
	213	#endif
ebca3df7 BM	214
ebca3df7 BM	215	/*
458ded34 WD	216	* Check the loadaddr variable.
	217	* If we don't know where the image is then we're done.
	218	*/
07a1a0c9	219	if (argc < 2)
1bdd4683 SR	220	addr = load_addr;
1bdd4683 SR	221	else
07a1a0c9	222	addr = simple_strtoul(argv[1], NULL, 16);
458ded34	223
baa26db4	224	#if defined(CONFIG_CMD_NET)
62e03d33	225	/*
ebca3df7 BM	226	* Check to see if we need to tftp the image ourselves
ebca3df7 BM	227	* before starting
62e03d33	228	*/
07a1a0c9	229	if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
bc0571fc	230	if (net_loop(TFTPGET) <= 0)
458ded34	231	return 1;
62e03d33 DS	232	printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",
62e03d33 DS	233	addr);
458ded34 WD	234	}
	235	#endif
	236
ebca3df7 BM	237	/*
	238	* This should equate to
	239	* NV_RAM_ADRS + NV_BOOT_OFFSET + NV_ENET_OFFSET
458ded34 WD	240	* from the VxWorks BSP header files.
	241	* This will vary from board to board
	242	*/
c157d8e2	243	#if defined(CONFIG_WALNUT)
ebca3df7	244	tmp = (char *)CONFIG_SYS_NVRAM_BASE_ADDR + 0x500;
35affd7a	245	eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
62c93d92	246	memcpy(tmp, &build_buf[3], 3);
6d0f6bcf	247	#elif defined(CONFIG_SYS_VXWORKS_MAC_PTR)
ebca3df7	248	tmp = (char *)CONFIG_SYS_VXWORKS_MAC_PTR;
35affd7a	249	eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
62c93d92	250	memcpy(tmp, build_buf, 6);
458ded34	251	#else
62e03d33	252	puts("## Ethernet MAC address not copied to NV RAM\n");
458ded34 WD	253	#endif
458ded34 WD	254
8bde7f77 WD	255	/*
8bde7f77 WD	256	* Use bootaddr to find the location in memory that VxWorks
9e98b7e3 BM	257	* will look for the bootline string. The default value is
	258	* (LOCAL_MEM_LOCAL_ADRS + BOOT_LINE_OFFSET) as defined by
	259	* VxWorks BSP. For example, on PowerPC it defaults to 0x4200.
458ded34	260	*/
00caae6d	261	tmp = env_get("bootaddr");
9e98b7e3 BM	262	if (!tmp) {
9e98b7e3 BM	263	printf("## VxWorks bootline address not specified\n");
458ded34	264	} else {
9e98b7e3	265	bootaddr = simple_strtoul(tmp, NULL, 16);
458ded34	266
9e98b7e3 BM	267	/*
	268	* Check to see if the bootline is defined in the 'bootargs'
	269	* parameter. If it is not defined, we may be able to
	270	* construct the info.
	271	*/
00caae6d	272	bootline = env_get("bootargs");
9e98b7e3 BM	273	if (bootline) {
	274	memcpy((void *)bootaddr, bootline,
	275	max(strlen(bootline), (size_t)255));
	276	flush_cache(bootaddr, max(strlen(bootline),
	277	(size_t)255));
	278	} else {
00caae6d	279	tmp = env_get("bootdev");
192bc694 BW	280	if (tmp) {
	281	strcpy(build_buf, tmp);
	282	ptr = strlen(tmp);
	283	} else
9e98b7e3 BM	284	printf("## VxWorks boot device not specified\n");
9e98b7e3 BM	285
00caae6d	286	tmp = env_get("bootfile");
9e98b7e3 BM	287	if (tmp)
	288	ptr += sprintf(build_buf + ptr,
	289	"host:%s ", tmp);
	290	else
	291	ptr += sprintf(build_buf + ptr,
	292	"host:vxWorks ");
	293
	294	/*
	295	* The following parameters are only needed if 'bootdev'
	296	* is an ethernet device, otherwise they are optional.
	297	*/
00caae6d	298	tmp = env_get("ipaddr");
a4092dbd	299	if (tmp) {
9e98b7e3	300	ptr += sprintf(build_buf + ptr, "e=%s", tmp);
00caae6d	301	tmp = env_get("netmask");
9e98b7e3	302	if (tmp) {
723806cc	303	u32 mask = env_get_ip("netmask").s_addr;
9e98b7e3 BM	304	ptr += sprintf(build_buf + ptr,
	305	":%08x ", ntohl(mask));
	306	} else {
	307	ptr += sprintf(build_buf + ptr, " ");
	308	}
a4092dbd	309	}
458ded34	310
00caae6d	311	tmp = env_get("serverip");
9e98b7e3 BM	312	if (tmp)
9e98b7e3 BM	313	ptr += sprintf(build_buf + ptr, "h=%s ", tmp);
62e03d33	314
00caae6d	315	tmp = env_get("gatewayip");
9e98b7e3 BM	316	if (tmp)
9e98b7e3 BM	317	ptr += sprintf(build_buf + ptr, "g=%s ", tmp);
a4092dbd	318
00caae6d	319	tmp = env_get("hostname");
9e98b7e3 BM	320	if (tmp)
9e98b7e3 BM	321	ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
458ded34	322
00caae6d	323	tmp = env_get("othbootargs");
192bc694 BW	324	if (tmp) {
	325	strcpy(build_buf + ptr, tmp);
	326	ptr += strlen(tmp);
	327	}
9e98b7e3 BM	328
	329	memcpy((void *)bootaddr, build_buf,
	330	max(strlen(build_buf), (size_t)255));
	331	flush_cache(bootaddr, max(strlen(build_buf),
	332	(size_t)255));
	333	}
29a4c24d	334
9e98b7e3 BM	335	printf("## Using bootline (@ 0x%lx): %s\n", bootaddr,
9e98b7e3 BM	336	(char *)bootaddr);
458ded34 WD	337	}
458ded34 WD	338
b90ff0fd BM	339	#ifdef CONFIG_X86
	340	/*
	341	* Since E820 information is critical to the kernel, if we don't
	342	* specify these in the environments, use a default one.
	343	*/
00caae6d	344	tmp = env_get("e820data");
b90ff0fd BM	345	if (tmp)
	346	data = (struct e820entry *)simple_strtoul(tmp, NULL, 16);
	347	else
	348	data = (struct e820entry *)VXWORKS_E820_DATA_ADDR;
00caae6d	349	tmp = env_get("e820info");
b90ff0fd BM	350	if (tmp)
	351	info = (struct e820info *)simple_strtoul(tmp, NULL, 16);
	352	else
	353	info = (struct e820info *)VXWORKS_E820_INFO_ADDR;
	354
	355	memset(info, 0, sizeof(struct e820info));
	356	info->sign = E820_SIGNATURE;
	357	info->entries = install_e820_map(E820MAX, data);
	358	info->addr = (info->entries - 1) * sizeof(struct e820entry) +
	359	VXWORKS_E820_DATA_ADDR;
	360	#endif
	361
8bde7f77 WD	362	/*
	363	* If the data at the load address is an elf image, then
	364	* treat it like an elf image. Otherwise, assume that it is a
ebca3df7	365	* binary image.
458ded34	366	*/
ebca3df7	367	if (valid_elf_image(addr))
62e03d33	368	addr = load_elf_image_shdr(addr);
ebca3df7	369	else
62e03d33	370	puts("## Not an ELF image, assuming binary\n");
458ded34	371
62e03d33	372	printf("## Starting vxWorks at 0x%08lx ...\n", addr);
458ded34	373
6eee21da	374	dcache_disable();
9aa1280a BM	375	#ifdef CONFIG_X86
	376	/* VxWorks on x86 uses stack to pass parameters */
	377	((asmlinkage void (*)(int))addr)(0);
	378	#else
ebca3df7	379	((void (*)(int))addr)(0);
9aa1280a	380	#endif
458ded34	381
62e03d33	382	puts("## vxWorks terminated\n");
ebca3df7	383
458ded34 WD	384	return 1;
	385	}
	386
0d498393	387	U_BOOT_CMD(
be1b8679	388	bootelf, CONFIG_SYS_MAXARGS, 0, do_bootelf,
2fb2604d	389	"Boot from an ELF image in memory",
f44a928e MF	390	"[-p\|-s] [address]\n"
	391	"\t- load ELF image at [address] via program headers (-p)\n"
	392	"\t or via section headers (-s)"
8bde7f77 WD	393	);
8bde7f77 WD	394
0d498393	395	U_BOOT_CMD(
ebca3df7	396	bootvx, 2, 0, do_bootvx,
2fb2604d	397	"Boot vxWorks from an ELF image",
a89c33db	398	" [address] - load address of vxWorks ELF image."
8bde7f77	399	);