[thirdparty/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 <environment.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
	ulong base;
	struct e820_info *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_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
	/*
	 * Get VxWorks's physical memory base address from environment,
	 * if we don't specify it in the environment, use a default one.
	 */
	base = env_get_hex("vx_phys_mem_base", VXWORKS_PHYS_MEM_BASE);
	data = (struct e820entry *)(base + E820_DATA_OFFSET);
	info = (struct e820_info *)(base + E820_INFO_OFFSET);

	memset(info, 0, sizeof(struct e820_info));
	info->sign = E820_SIGNATURE;
	info->entries = install_e820_map(E820MAX, data);
	info->addr = (info->entries - 1) * sizeof(struct e820entry) +
		     E820_DATA_OFFSET;

	/*
	 * Explicitly clear the bootloader image size otherwise if memory
	 * at this offset happens to contain some garbage data, the final
	 * available memory size for the kernel is insane.
	 */
	*(u32 *)(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
#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_phdr(addr);
	else
		puts("## Not an ELF image, assuming binary\n");

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

	dcache_disable();
#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
	armv8_setup_psci();
	smp_kick_all_cpus();
#endif

#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>
9925f1db	19	#include <environment.h>
ebca3df7	20	#include <net.h>
29a4c24d	21	#include <vxworks.h>
b90ff0fd BM	22	#ifdef CONFIG_X86
b90ff0fd BM	23	#include <asm/e820.h>
9aa1280a	24	#include <linux/linkage.h>
b90ff0fd	25	#endif
458ded34	26
9dffa52d BM	27	/*
	28	* A very simple elf loader, assumes the image is valid, returns the
	29	* entry point address.
	30	*/
	31	static unsigned long load_elf_image_phdr(unsigned long addr)
	32	{
	33	Elf32_Ehdr ehdr; / Elf header structure pointer */
	34	Elf32_Phdr phdr; / Program header structure pointer */
	35	int i;
	36
	37	ehdr = (Elf32_Ehdr *)addr;
	38	phdr = (Elf32_Phdr *)(addr + ehdr->e_phoff);
	39
	40	/* Load each program header */
	41	for (i = 0; i < ehdr->e_phnum; ++i) {
	42	void dst = (void )(uintptr_t)phdr->p_paddr;
	43	void src = (void )addr + phdr->p_offset;
	44	debug("Loading phdr %i to 0x%p (%i bytes)\n",
	45	i, dst, phdr->p_filesz);
	46	if (phdr->p_filesz)
	47	memcpy(dst, src, phdr->p_filesz);
	48	if (phdr->p_filesz != phdr->p_memsz)
	49	memset(dst + phdr->p_filesz, 0x00,
	50	phdr->p_memsz - phdr->p_filesz);
	51	flush_cache((unsigned long)dst, phdr->p_filesz);
	52	++phdr;
	53	}
	54
	55	return ehdr->e_entry;
	56	}
	57
	58	static unsigned long load_elf_image_shdr(unsigned long addr)
	59	{
	60	Elf32_Ehdr ehdr; / Elf header structure pointer */
	61	Elf32_Shdr shdr; / Section header structure pointer */
	62	unsigned char strtab = 0; / String table pointer */
	63	unsigned char image; / Binary image pointer */
	64	int i; /* Loop counter */
	65
	66	ehdr = (Elf32_Ehdr *)addr;
	67
	68	/* Find the section header string table for output info */
	69	shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
	70	(ehdr->e_shstrndx * sizeof(Elf32_Shdr)));
	71
	72	if (shdr->sh_type == SHT_STRTAB)
	73	strtab = (unsigned char *)(addr + shdr->sh_offset);
	74
	75	/* Load each appropriate section */
	76	for (i = 0; i < ehdr->e_shnum; ++i) {
	77	shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
	78	(i * sizeof(Elf32_Shdr)));
	79
	80	if (!(shdr->sh_flags & SHF_ALLOC) \|\|
	81	shdr->sh_addr == 0 \|\| shdr->sh_size == 0) {
	82	continue;
	83	}
	84
	85	if (strtab) {
	86	debug("%sing %s @ 0x%08lx (%ld bytes)\n",
	87	(shdr->sh_type == SHT_NOBITS) ? "Clear" : "Load",
	88	&strtab[shdr->sh_name],
	89	(unsigned long)shdr->sh_addr,
	90	(long)shdr->sh_size);
91	}
92
93	if (shdr->sh_type == SHT_NOBITS) {
94	memset((void *)(uintptr_t)shdr->sh_addr, 0,
95	shdr->sh_size);
96	} else {
97	image = (unsigned char *)addr + shdr->sh_offset;
98	memcpy((void *)(uintptr_t)shdr->sh_addr,
99	(const void *)image, shdr->sh_size);
100	}
101	flush_cache(shdr->sh_addr, shdr->sh_size);
102	}
103
104	return ehdr->e_entry;
105	}
017e9b79 MF	106
017e9b79 MF	107	/* Allow ports to override the default behavior */
553d8c3a	108	static unsigned long do_bootelf_exec(ulong (entry)(int, char const[]),
ebca3df7	109	int argc, char * const argv[])
1f1d88dd	110	{
017e9b79 MF	111	unsigned long ret;
017e9b79 MF	112
017e9b79 MF	113	/*
	114	* pass address parameter as argv[0] (aka command name),
	115	* and all remaining args
	116	*/
62e03d33	117	ret = entry(argc, argv);
1f1d88dd	118
017e9b79 MF	119	return ret;
017e9b79 MF	120	}
458ded34	121
ebca3df7	122	/*
62e03d33	123	* Determine if a valid ELF image exists at the given memory location.
ebca3df7 BM	124	* First look at the ELF header magic field, then make sure that it is
	125	* executable.
	126	*/
62e03d33 DS	127	int valid_elf_image(unsigned long addr)
62e03d33 DS	128	{
ebca3df7	129	Elf32_Ehdr ehdr; / Elf header structure pointer */
62e03d33	130
ebca3df7	131	ehdr = (Elf32_Ehdr *)addr;
62e03d33 DS	132
	133	if (!IS_ELF(*ehdr)) {
	134	printf("## No elf image at address 0x%08lx\n", addr);
	135	return 0;
	136	}
	137
	138	if (ehdr->e_type != ET_EXEC) {
	139	printf("## Not a 32-bit elf image at address 0x%08lx\n", addr);
	140	return 0;
	141	}
	142
62e03d33 DS	143	return 1;
	144	}
	145
ebca3df7	146	/* Interpreter command to boot an arbitrary ELF image from memory */
62e03d33	147	int do_bootelf(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
458ded34	148	{
ebca3df7 BM	149	unsigned long addr; /* Address of the ELF image */
ebca3df7 BM	150	unsigned long rc; /* Return value from user code */
be1b8679	151	char *sload = NULL;
00caae6d	152	const char *ep = env_get("autostart");
458ded34 WD	153	int rcode = 0;
458ded34 WD	154
be1b8679 TR	155	/* Consume 'bootelf' */
be1b8679 TR	156	argc--; argv++;
f44a928e	157
be1b8679 TR	158	/* Check for flag. */
	159	if (argc >= 1 && (argv[0][0] == '-' && \
	160	(argv[0][1] == 'p' \|\| argv[0][1] == 's'))) {
	161	sload = argv[0];
	162	/* Consume flag. */
	163	argc--; argv++;
	164	}
	165	/* Check for address. */
	166	if (argc >= 1 && strict_strtoul(argv[0], 16, &addr) != -EINVAL) {
	167	/* Consume address */
	168	argc--; argv++;
	169	} else
f44a928e	170	addr = load_addr;
458ded34	171
62e03d33	172	if (!valid_elf_image(addr))
458ded34 WD	173	return 1;
458ded34 WD	174
f44a928e MF	175	if (sload && sload[1] == 'p')
	176	addr = load_elf_image_phdr(addr);
	177	else
	178	addr = load_elf_image_shdr(addr);
458ded34	179
44c8fd3a SDPP	180	if (ep && !strcmp(ep, "no"))
	181	return rcode;
	182
62e03d33	183	printf("## Starting application at 0x%08lx ...\n", addr);
458ded34	184
458ded34 WD	185	/*
	186	* pass address parameter as argv[0] (aka command name),
	187	* and all remaining args
	188	*/
be1b8679	189	rc = do_bootelf_exec((void *)addr, argc, argv);
458ded34 WD	190	if (rc != 0)
	191	rcode = 1;
	192
62e03d33	193	printf("## Application terminated, rc = 0x%lx\n", rc);
ebca3df7	194
458ded34 WD	195	return rcode;
	196	}
	197
ebca3df7	198	/*
458ded34 WD	199	* Interpreter command to boot VxWorks from a memory image. The image can
	200	* be either an ELF image or a raw binary. Will attempt to setup the
	201	* bootline and other parameters correctly.
ebca3df7	202	*/
62e03d33	203	int do_bootvx(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
458ded34	204	{
ebca3df7 BM	205	unsigned long addr; /* Address of image */
	206	unsigned long bootaddr; /* Address to put the bootline */
	207	char bootline; / Text of the bootline */
	208	char tmp; / Temporary char pointer */
	209	char build_buf[128]; /* Buffer for building the bootline */
7f0c3c51	210	int ptr = 0;
b90ff0fd	211	#ifdef CONFIG_X86
2902be86	212	ulong base;
fa5e91f7	213	struct e820_info *info;
b90ff0fd BM	214	struct e820entry *data;
b90ff0fd BM	215	#endif
ebca3df7 BM	216
ebca3df7 BM	217	/*
458ded34 WD	218	* Check the loadaddr variable.
	219	* If we don't know where the image is then we're done.
	220	*/
07a1a0c9	221	if (argc < 2)
1bdd4683 SR	222	addr = load_addr;
1bdd4683 SR	223	else
07a1a0c9	224	addr = simple_strtoul(argv[1], NULL, 16);
458ded34	225
baa26db4	226	#if defined(CONFIG_CMD_NET)
62e03d33	227	/*
ebca3df7 BM	228	* Check to see if we need to tftp the image ourselves
ebca3df7 BM	229	* before starting
62e03d33	230	*/
07a1a0c9	231	if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
bc0571fc	232	if (net_loop(TFTPGET) <= 0)
458ded34	233	return 1;
62e03d33 DS	234	printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",
62e03d33 DS	235	addr);
458ded34 WD	236	}
	237	#endif
	238
ebca3df7 BM	239	/*
	240	* This should equate to
	241	* NV_RAM_ADRS + NV_BOOT_OFFSET + NV_ENET_OFFSET
458ded34 WD	242	* from the VxWorks BSP header files.
	243	* This will vary from board to board
	244	*/
8996975f	245	#if defined(CONFIG_SYS_VXWORKS_MAC_PTR)
ebca3df7	246	tmp = (char *)CONFIG_SYS_VXWORKS_MAC_PTR;
35affd7a	247	eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
62c93d92	248	memcpy(tmp, build_buf, 6);
458ded34	249	#else
62e03d33	250	puts("## Ethernet MAC address not copied to NV RAM\n");
458ded34 WD	251	#endif
458ded34 WD	252
8bde7f77 WD	253	/*
8bde7f77 WD	254	* Use bootaddr to find the location in memory that VxWorks
9e98b7e3 BM	255	* will look for the bootline string. The default value is
	256	* (LOCAL_MEM_LOCAL_ADRS + BOOT_LINE_OFFSET) as defined by
	257	* VxWorks BSP. For example, on PowerPC it defaults to 0x4200.
458ded34	258	*/
00caae6d	259	tmp = env_get("bootaddr");
9e98b7e3 BM	260	if (!tmp) {
9e98b7e3 BM	261	printf("## VxWorks bootline address not specified\n");
458ded34	262	} else {
9e98b7e3	263	bootaddr = simple_strtoul(tmp, NULL, 16);
458ded34	264
9e98b7e3 BM	265	/*
	266	* Check to see if the bootline is defined in the 'bootargs'
	267	* parameter. If it is not defined, we may be able to
	268	* construct the info.
	269	*/
00caae6d	270	bootline = env_get("bootargs");
9e98b7e3 BM	271	if (bootline) {
	272	memcpy((void *)bootaddr, bootline,
	273	max(strlen(bootline), (size_t)255));
	274	flush_cache(bootaddr, max(strlen(bootline),
	275	(size_t)255));
	276	} else {
00caae6d	277	tmp = env_get("bootdev");
192bc694 BW	278	if (tmp) {
	279	strcpy(build_buf, tmp);
	280	ptr = strlen(tmp);
	281	} else
9e98b7e3 BM	282	printf("## VxWorks boot device not specified\n");
9e98b7e3 BM	283
00caae6d	284	tmp = env_get("bootfile");
9e98b7e3 BM	285	if (tmp)
	286	ptr += sprintf(build_buf + ptr,
	287	"host:%s ", tmp);
	288	else
	289	ptr += sprintf(build_buf + ptr,
	290	"host:vxWorks ");
	291
	292	/*
	293	* The following parameters are only needed if 'bootdev'
	294	* is an ethernet device, otherwise they are optional.
	295	*/
00caae6d	296	tmp = env_get("ipaddr");
a4092dbd	297	if (tmp) {
9e98b7e3	298	ptr += sprintf(build_buf + ptr, "e=%s", tmp);
00caae6d	299	tmp = env_get("netmask");
9e98b7e3	300	if (tmp) {
723806cc	301	u32 mask = env_get_ip("netmask").s_addr;
9e98b7e3 BM	302	ptr += sprintf(build_buf + ptr,
	303	":%08x ", ntohl(mask));
	304	} else {
	305	ptr += sprintf(build_buf + ptr, " ");
	306	}
a4092dbd	307	}
458ded34	308
00caae6d	309	tmp = env_get("serverip");
9e98b7e3 BM	310	if (tmp)
9e98b7e3 BM	311	ptr += sprintf(build_buf + ptr, "h=%s ", tmp);
62e03d33	312
00caae6d	313	tmp = env_get("gatewayip");
9e98b7e3 BM	314	if (tmp)
9e98b7e3 BM	315	ptr += sprintf(build_buf + ptr, "g=%s ", tmp);
a4092dbd	316
00caae6d	317	tmp = env_get("hostname");
9e98b7e3 BM	318	if (tmp)
9e98b7e3 BM	319	ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
458ded34	320
00caae6d	321	tmp = env_get("othbootargs");
192bc694 BW	322	if (tmp) {
	323	strcpy(build_buf + ptr, tmp);
	324	ptr += strlen(tmp);
	325	}
9e98b7e3 BM	326
	327	memcpy((void *)bootaddr, build_buf,
	328	max(strlen(build_buf), (size_t)255));
	329	flush_cache(bootaddr, max(strlen(build_buf),
	330	(size_t)255));
	331	}
29a4c24d	332
9e98b7e3 BM	333	printf("## Using bootline (@ 0x%lx): %s\n", bootaddr,
9e98b7e3 BM	334	(char *)bootaddr);
458ded34 WD	335	}
458ded34 WD	336
b90ff0fd BM	337	#ifdef CONFIG_X86
b90ff0fd BM	338	/*
2902be86 BM	339	* Get VxWorks's physical memory base address from environment,
2902be86 BM	340	* if we don't specify it in the environment, use a default one.
b90ff0fd	341	*/
2902be86 BM	342	base = env_get_hex("vx_phys_mem_base", VXWORKS_PHYS_MEM_BASE);
2902be86 BM	343	data = (struct e820entry *)(base + E820_DATA_OFFSET);
fa5e91f7	344	info = (struct e820_info *)(base + E820_INFO_OFFSET);
b90ff0fd	345
fa5e91f7	346	memset(info, 0, sizeof(struct e820_info));
b90ff0fd BM	347	info->sign = E820_SIGNATURE;
	348	info->entries = install_e820_map(E820MAX, data);
	349	info->addr = (info->entries - 1) * sizeof(struct e820entry) +
2902be86	350	E820_DATA_OFFSET;
1351700c BM	351
	352	/*
	353	* Explicitly clear the bootloader image size otherwise if memory
	354	* at this offset happens to contain some garbage data, the final
	355	* available memory size for the kernel is insane.
	356	*/
	357	(u32 )(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
b90ff0fd BM	358	#endif
b90ff0fd BM	359
8bde7f77 WD	360	/*
	361	* If the data at the load address is an elf image, then
	362	* treat it like an elf image. Otherwise, assume that it is a
ebca3df7	363	* binary image.
458ded34	364	*/
ebca3df7	365	if (valid_elf_image(addr))
476c2fcd	366	addr = load_elf_image_phdr(addr);
ebca3df7	367	else
62e03d33	368	puts("## Not an ELF image, assuming binary\n");
458ded34	369
62e03d33	370	printf("## Starting vxWorks at 0x%08lx ...\n", addr);
458ded34	371
6eee21da	372	dcache_disable();
3194daa1 VV	373	#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
	374	armv8_setup_psci();
	375	smp_kick_all_cpus();
	376	#endif
	377
9aa1280a BM	378	#ifdef CONFIG_X86
	379	/* VxWorks on x86 uses stack to pass parameters */
	380	((asmlinkage void (*)(int))addr)(0);
	381	#else
ebca3df7	382	((void (*)(int))addr)(0);
9aa1280a	383	#endif
458ded34	384
62e03d33	385	puts("## vxWorks terminated\n");
ebca3df7	386
458ded34 WD	387	return 1;
	388	}
	389
0d498393	390	U_BOOT_CMD(
be1b8679	391	bootelf, CONFIG_SYS_MAXARGS, 0, do_bootelf,
2fb2604d	392	"Boot from an ELF image in memory",
f44a928e MF	393	"[-p\|-s] [address]\n"
	394	"\t- load ELF image at [address] via program headers (-p)\n"
	395	"\t or via section headers (-s)"
8bde7f77 WD	396	);
8bde7f77 WD	397
0d498393	398	U_BOOT_CMD(
ebca3df7	399	bootvx, 2, 0, do_bootvx,
2fb2604d	400	"Boot vxWorks from an ELF image",
a89c33db	401	" [address] - load address of vxWorks ELF image."
8bde7f77	402	);