[qemu.git] / loader.c

/*
 * QEMU Executable loader
 *
 * Copyright (c) 2006 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "qemu-common.h"
#include "disas.h"
#include "sysemu.h"
#include "uboot_image.h"

/* return the size or -1 if error */
int get_image_size(const char *filename)
{
    int fd, size;
    fd = open(filename, O_RDONLY | O_BINARY);
    if (fd < 0)
        return -1;
    size = lseek(fd, 0, SEEK_END);
    close(fd);
    return size;
}

/* return the size or -1 if error */
/* deprecated, because caller does not specify buffer size! */
int load_image(const char *filename, uint8_t *addr)
{
    int fd, size;
    fd = open(filename, O_RDONLY | O_BINARY);
    if (fd < 0)
        return -1;
    size = lseek(fd, 0, SEEK_END);
    lseek(fd, 0, SEEK_SET);
    if (read(fd, addr, size) != size) {
        close(fd);
        return -1;
    }
    close(fd);
    return size;
}

/* return the amount read, just like fread.  0 may mean error or eof */
int fread_targphys(target_phys_addr_t dst_addr, size_t nbytes, FILE *f)
{
    uint8_t buf[4096];
    target_phys_addr_t dst_begin = dst_addr;
    size_t want, did;

    while (nbytes) {
	want = nbytes > sizeof(buf) ? sizeof(buf) : nbytes;
	did = fread(buf, 1, want, f);
	if (did != want) break;

	cpu_physical_memory_write_rom(dst_addr, buf, did);
	dst_addr += did;
	nbytes -= did;
    }
    return dst_addr - dst_begin;
}

/* returns 0 on error, 1 if ok */
int fread_targphys_ok(target_phys_addr_t dst_addr, size_t nbytes, FILE *f)
{
    return fread_targphys(dst_addr, nbytes, f) == nbytes;
}

/* read()-like version */
int read_targphys(int fd, target_phys_addr_t dst_addr, size_t nbytes)
{
    uint8_t buf[4096];
    target_phys_addr_t dst_begin = dst_addr;
    size_t want, did;

    while (nbytes) {
	want = nbytes > sizeof(buf) ? sizeof(buf) : nbytes;
	did = read(fd, buf, want);
	if (did != want) break;

	cpu_physical_memory_write_rom(dst_addr, buf, did);
	dst_addr += did;
	nbytes -= did;
    }
    return dst_addr - dst_begin;
}

/* return the size or -1 if error */
int load_image_targphys(const char *filename,
			target_phys_addr_t addr, int max_sz)
{
    FILE *f;
    size_t got;

    f = fopen(filename, "rb");
    if (!f) return -1;

    got = fread_targphys(addr, max_sz, f);
    if (ferror(f)) { fclose(f); return -1; }
    fclose(f);

    return got;
}

void pstrcpy_targphys(target_phys_addr_t dest, int buf_size,
                      const char *source)
{
    static const uint8_t nul_byte = 0;
    const char *nulp;

    if (buf_size <= 0) return;
    nulp = memchr(source, 0, buf_size);
    if (nulp) {
	cpu_physical_memory_write_rom(dest, (uint8_t *)source,
                                      (nulp - source) + 1);
    } else {
	cpu_physical_memory_write_rom(dest, (uint8_t *)source, buf_size - 1);
	cpu_physical_memory_write_rom(dest, &nul_byte, 1);
    }
}

/* A.OUT loader */

struct exec
{
  uint32_t a_info;   /* Use macros N_MAGIC, etc for access */
  uint32_t a_text;   /* length of text, in bytes */
  uint32_t a_data;   /* length of data, in bytes */
  uint32_t a_bss;    /* length of uninitialized data area, in bytes */
  uint32_t a_syms;   /* length of symbol table data in file, in bytes */
  uint32_t a_entry;  /* start address */
  uint32_t a_trsize; /* length of relocation info for text, in bytes */
  uint32_t a_drsize; /* length of relocation info for data, in bytes */
};

#ifdef BSWAP_NEEDED
static void bswap_ahdr(struct exec *e)
{
    bswap32s(&e->a_info);
    bswap32s(&e->a_text);
    bswap32s(&e->a_data);
    bswap32s(&e->a_bss);
    bswap32s(&e->a_syms);
    bswap32s(&e->a_entry);
    bswap32s(&e->a_trsize);
    bswap32s(&e->a_drsize);
}
#else
#define bswap_ahdr(x) do { } while (0)
#endif

#define N_MAGIC(exec) ((exec).a_info & 0xffff)
#define OMAGIC 0407
#define NMAGIC 0410
#define ZMAGIC 0413
#define QMAGIC 0314
#define _N_HDROFF(x) (1024 - sizeof (struct exec))
#define N_TXTOFF(x)							\
    (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) :	\
     (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? TARGET_PAGE_SIZE : 0)
#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
#define _N_SEGMENT_ROUND(x) (((x) + TARGET_PAGE_SIZE - 1) & ~(TARGET_PAGE_SIZE - 1))

#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)

#define N_DATADDR(x) \
    (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
     : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))


int load_aout(const char *filename, target_phys_addr_t addr, int max_sz)
{
    int fd, size, ret;
    struct exec e;
    uint32_t magic;

    fd = open(filename, O_RDONLY | O_BINARY);
    if (fd < 0)
        return -1;

    size = read(fd, &e, sizeof(e));
    if (size < 0)
        goto fail;

    bswap_ahdr(&e);

    magic = N_MAGIC(e);
    switch (magic) {
    case ZMAGIC:
    case QMAGIC:
    case OMAGIC:
        if (e.a_text + e.a_data > max_sz)
            goto fail;
	lseek(fd, N_TXTOFF(e), SEEK_SET);
	size = read_targphys(fd, addr, e.a_text + e.a_data);
	if (size < 0)
	    goto fail;
	break;
    case NMAGIC:
        if (N_DATADDR(e) + e.a_data > max_sz)
            goto fail;
	lseek(fd, N_TXTOFF(e), SEEK_SET);
	size = read_targphys(fd, addr, e.a_text);
	if (size < 0)
	    goto fail;
	ret = read_targphys(fd, addr + N_DATADDR(e), e.a_data);
	if (ret < 0)
	    goto fail;
	size += ret;
	break;
    default:
	goto fail;
    }
    close(fd);
    return size;
 fail:
    close(fd);
    return -1;
}

/* ELF loader */

static void *load_at(int fd, int offset, int size)
{
    void *ptr;
    if (lseek(fd, offset, SEEK_SET) < 0)
        return NULL;
    ptr = qemu_malloc(size);
    if (!ptr)
        return NULL;
    if (read(fd, ptr, size) != size) {
        qemu_free(ptr);
        return NULL;
    }
    return ptr;
}


#define ELF_CLASS   ELFCLASS32
#include "elf.h"

#define SZ		32
#define elf_word        uint32_t
#define elf_sword        int32_t
#define bswapSZs	bswap32s
#include "elf_ops.h"

#undef elfhdr
#undef elf_phdr
#undef elf_shdr
#undef elf_sym
#undef elf_note
#undef elf_word
#undef elf_sword
#undef bswapSZs
#undef SZ
#define elfhdr		elf64_hdr
#define elf_phdr	elf64_phdr
#define elf_note	elf64_note
#define elf_shdr	elf64_shdr
#define elf_sym		elf64_sym
#define elf_word        uint64_t
#define elf_sword        int64_t
#define bswapSZs	bswap64s
#define SZ		64
#include "elf_ops.h"

/* return < 0 if error, otherwise the number of bytes loaded in memory */
int load_elf(const char *filename, int64_t virt_to_phys_addend,
             uint64_t *pentry, uint64_t *lowaddr, uint64_t *highaddr)
{
    int fd, data_order, host_data_order, must_swab, ret;
    uint8_t e_ident[EI_NIDENT];

    fd = open(filename, O_RDONLY | O_BINARY);
    if (fd < 0) {
        perror(filename);
        return -1;
    }
    if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
        goto fail;
    if (e_ident[0] != ELFMAG0 ||
        e_ident[1] != ELFMAG1 ||
        e_ident[2] != ELFMAG2 ||
        e_ident[3] != ELFMAG3)
        goto fail;
#ifdef WORDS_BIGENDIAN
    data_order = ELFDATA2MSB;
#else
    data_order = ELFDATA2LSB;
#endif
    must_swab = data_order != e_ident[EI_DATA];

#ifdef TARGET_WORDS_BIGENDIAN
    host_data_order = ELFDATA2MSB;
#else
    host_data_order = ELFDATA2LSB;
#endif
    if (host_data_order != e_ident[EI_DATA])
        return -1;

    lseek(fd, 0, SEEK_SET);
    if (e_ident[EI_CLASS] == ELFCLASS64) {
        ret = load_elf64(fd, virt_to_phys_addend, must_swab, pentry,
                         lowaddr, highaddr);
    } else {
        ret = load_elf32(fd, virt_to_phys_addend, must_swab, pentry,
                         lowaddr, highaddr);
    }

    close(fd);
    return ret;

 fail:
    close(fd);
    return -1;
}

static void bswap_uboot_header(uboot_image_header_t *hdr)
{
#ifndef WORDS_BIGENDIAN
    bswap32s(&hdr->ih_magic);
    bswap32s(&hdr->ih_hcrc);
    bswap32s(&hdr->ih_time);
    bswap32s(&hdr->ih_size);
    bswap32s(&hdr->ih_load);
    bswap32s(&hdr->ih_ep);
    bswap32s(&hdr->ih_dcrc);
#endif
}

/* Load a U-Boot image.  */
int load_uboot(const char *filename, target_ulong *ep, int *is_linux)
{

    int fd;
    int size;
    uboot_image_header_t h;
    uboot_image_header_t *hdr = &h;
    uint8_t *data = NULL;

    fd = open(filename, O_RDONLY | O_BINARY);
    if (fd < 0)
        return -1;

    size = read(fd, hdr, sizeof(uboot_image_header_t));
    if (size < 0)
        goto fail;

    bswap_uboot_header(hdr);

    if (hdr->ih_magic != IH_MAGIC)
        goto fail;

    /* TODO: Implement Multi-File images.  */
    if (hdr->ih_type == IH_TYPE_MULTI) {
        fprintf(stderr, "Unable to load multi-file u-boot images\n");
        goto fail;
    }

    /* TODO: Implement compressed images.  */
    if (hdr->ih_comp != IH_COMP_NONE) {
        fprintf(stderr, "Unable to load compressed u-boot images\n");
        goto fail;
    }

    /* TODO: Check CPU type.  */
    if (is_linux) {
        if (hdr->ih_type == IH_TYPE_KERNEL && hdr->ih_os == IH_OS_LINUX)
            *is_linux = 1;
        else
            *is_linux = 0;
    }

    *ep = hdr->ih_ep;
    data = qemu_malloc(hdr->ih_size);
    if (!data)
        goto fail;

    if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
        fprintf(stderr, "Error reading file\n");
        goto fail;
    }

    cpu_physical_memory_write_rom(hdr->ih_load, data, hdr->ih_size);

    return hdr->ih_size;

fail:
    if (data)
        qemu_free(data);
    close(fd);
    return -1;
}
Commit	Line	Data
5fe141fd FB	1	/*
5fe141fd FB	2	* QEMU Executable loader
5fafdf24	3	*
5fe141fd	4	* Copyright (c) 2006 Fabrice Bellard
5fafdf24	5	*
5fe141fd FB	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
87ecb68b	24	#include "qemu-common.h"
5fe141fd	25	#include "disas.h"
9596ebb7	26	#include "sysemu.h"
1c7b3754	27	#include "uboot_image.h"
5fe141fd FB	28
	29	/* return the size or -1 if error */
	30	int get_image_size(const char *filename)
	31	{
	32	int fd, size;
	33	fd = open(filename, O_RDONLY \| O_BINARY);
	34	if (fd < 0)
	35	return -1;
	36	size = lseek(fd, 0, SEEK_END);
	37	close(fd);
	38	return size;
	39	}
	40
	41	/* return the size or -1 if error */
293f78bc	42	/* deprecated, because caller does not specify buffer size! */
5fe141fd FB	43	int load_image(const char filename, uint8_t addr)
	44	{
	45	int fd, size;
	46	fd = open(filename, O_RDONLY \| O_BINARY);
	47	if (fd < 0)
	48	return -1;
	49	size = lseek(fd, 0, SEEK_END);
	50	lseek(fd, 0, SEEK_SET);
	51	if (read(fd, addr, size) != size) {
	52	close(fd);
	53	return -1;
	54	}
	55	close(fd);
	56	return size;
	57	}
	58
293f78bc BS	59	/* return the amount read, just like fread. 0 may mean error or eof */
	60	int fread_targphys(target_phys_addr_t dst_addr, size_t nbytes, FILE *f)
	61	{
	62	uint8_t buf[4096];
	63	target_phys_addr_t dst_begin = dst_addr;
	64	size_t want, did;
	65
	66	while (nbytes) {
	67	want = nbytes > sizeof(buf) ? sizeof(buf) : nbytes;
	68	did = fread(buf, 1, want, f);
	69	if (did != want) break;
	70
	71	cpu_physical_memory_write_rom(dst_addr, buf, did);
	72	dst_addr += did;
	73	nbytes -= did;
	74	}
	75	return dst_addr - dst_begin;
	76	}
	77
	78	/* returns 0 on error, 1 if ok */
	79	int fread_targphys_ok(target_phys_addr_t dst_addr, size_t nbytes, FILE *f)
	80	{
	81	return fread_targphys(dst_addr, nbytes, f) == nbytes;
	82	}
	83
	84	/* read()-like version */
	85	int read_targphys(int fd, target_phys_addr_t dst_addr, size_t nbytes)
	86	{
	87	uint8_t buf[4096];
	88	target_phys_addr_t dst_begin = dst_addr;
	89	size_t want, did;
	90
	91	while (nbytes) {
	92	want = nbytes > sizeof(buf) ? sizeof(buf) : nbytes;
	93	did = read(fd, buf, want);
	94	if (did != want) break;
	95
	96	cpu_physical_memory_write_rom(dst_addr, buf, did);
	97	dst_addr += did;
	98	nbytes -= did;
	99	}
	100	return dst_addr - dst_begin;
	101	}
	102
	103	/* return the size or -1 if error */
	104	int load_image_targphys(const char *filename,
	105	target_phys_addr_t addr, int max_sz)
	106	{
	107	FILE *f;
	108	size_t got;
	109
	110	f = fopen(filename, "rb");
	111	if (!f) return -1;
	112
	113	got = fread_targphys(addr, max_sz, f);
	114	if (ferror(f)) { fclose(f); return -1; }
	115	fclose(f);
	116
	117	return got;
	118	}
	119
	120	void pstrcpy_targphys(target_phys_addr_t dest, int buf_size,
	121	const char *source)
	122	{
123	static const uint8_t nul_byte = 0;
124	const char *nulp;
125
126	if (buf_size <= 0) return;
127	nulp = memchr(source, 0, buf_size);
128	if (nulp) {
129	cpu_physical_memory_write_rom(dest, (uint8_t *)source,
130	(nulp - source) + 1);
131	} else {
132	cpu_physical_memory_write_rom(dest, (uint8_t *)source, buf_size - 1);
133	cpu_physical_memory_write_rom(dest, &nul_byte, 1);
134	}
135	}
136
5fe141fd FB	137	/* A.OUT loader */
	138
	139	struct exec
	140	{
	141	uint32_t a_info; /* Use macros N_MAGIC, etc for access */
	142	uint32_t a_text; /* length of text, in bytes */
	143	uint32_t a_data; /* length of data, in bytes */
	144	uint32_t a_bss; /* length of uninitialized data area, in bytes */
	145	uint32_t a_syms; /* length of symbol table data in file, in bytes */
	146	uint32_t a_entry; /* start address */
	147	uint32_t a_trsize; /* length of relocation info for text, in bytes */
	148	uint32_t a_drsize; /* length of relocation info for data, in bytes */
	149	};
	150
	151	#ifdef BSWAP_NEEDED
	152	static void bswap_ahdr(struct exec *e)
	153	{
	154	bswap32s(&e->a_info);
	155	bswap32s(&e->a_text);
	156	bswap32s(&e->a_data);
	157	bswap32s(&e->a_bss);
	158	bswap32s(&e->a_syms);
	159	bswap32s(&e->a_entry);
	160	bswap32s(&e->a_trsize);
	161	bswap32s(&e->a_drsize);
	162	}
	163	#else
	164	#define bswap_ahdr(x) do { } while (0)
	165	#endif
	166
	167	#define N_MAGIC(exec) ((exec).a_info & 0xffff)
	168	#define OMAGIC 0407
	169	#define NMAGIC 0410
	170	#define ZMAGIC 0413
	171	#define QMAGIC 0314
	172	#define _N_HDROFF(x) (1024 - sizeof (struct exec))
	173	#define N_TXTOFF(x) \
	174	(N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
	175	(N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
	176	#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? TARGET_PAGE_SIZE : 0)
	177	#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
	178	#define _N_SEGMENT_ROUND(x) (((x) + TARGET_PAGE_SIZE - 1) & ~(TARGET_PAGE_SIZE - 1))
	179
	180	#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
	181
	182	#define N_DATADDR(x) \
	183	(N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
	184	: (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
	185
	186
293f78bc	187	int load_aout(const char *filename, target_phys_addr_t addr, int max_sz)
5fe141fd FB	188	{
	189	int fd, size, ret;
	190	struct exec e;
	191	uint32_t magic;
	192
	193	fd = open(filename, O_RDONLY \| O_BINARY);
	194	if (fd < 0)
	195	return -1;
	196
	197	size = read(fd, &e, sizeof(e));
	198	if (size < 0)
	199	goto fail;
	200
	201	bswap_ahdr(&e);
	202
	203	magic = N_MAGIC(e);
	204	switch (magic) {
	205	case ZMAGIC:
	206	case QMAGIC:
	207	case OMAGIC:
293f78bc BS	208	if (e.a_text + e.a_data > max_sz)
293f78bc BS	209	goto fail;
5fe141fd	210	lseek(fd, N_TXTOFF(e), SEEK_SET);
293f78bc	211	size = read_targphys(fd, addr, e.a_text + e.a_data);
5fe141fd FB	212	if (size < 0)
	213	goto fail;
	214	break;
	215	case NMAGIC:
293f78bc BS	216	if (N_DATADDR(e) + e.a_data > max_sz)
293f78bc BS	217	goto fail;
5fe141fd	218	lseek(fd, N_TXTOFF(e), SEEK_SET);
293f78bc	219	size = read_targphys(fd, addr, e.a_text);
5fe141fd FB	220	if (size < 0)
5fe141fd FB	221	goto fail;
293f78bc	222	ret = read_targphys(fd, addr + N_DATADDR(e), e.a_data);
5fe141fd FB	223	if (ret < 0)
	224	goto fail;
	225	size += ret;
	226	break;
	227	default:
	228	goto fail;
	229	}
	230	close(fd);
	231	return size;
	232	fail:
	233	close(fd);
	234	return -1;
	235	}
	236
	237	/* ELF loader */
	238
	239	static void *load_at(int fd, int offset, int size)
	240	{
	241	void *ptr;
	242	if (lseek(fd, offset, SEEK_SET) < 0)
	243	return NULL;
	244	ptr = qemu_malloc(size);
	245	if (!ptr)
	246	return NULL;
	247	if (read(fd, ptr, size) != size) {
	248	qemu_free(ptr);
	249	return NULL;
	250	}
	251	return ptr;
	252	}
	253
	254
	255	#define ELF_CLASS ELFCLASS32
	256	#include "elf.h"
	257
	258	#define SZ 32
	259	#define elf_word uint32_t
82790064	260	#define elf_sword int32_t
5fe141fd FB	261	#define bswapSZs bswap32s
	262	#include "elf_ops.h"
	263
	264	#undef elfhdr
	265	#undef elf_phdr
	266	#undef elf_shdr
	267	#undef elf_sym
	268	#undef elf_note
	269	#undef elf_word
82790064	270	#undef elf_sword
5fe141fd FB	271	#undef bswapSZs
	272	#undef SZ
	273	#define elfhdr elf64_hdr
	274	#define elf_phdr elf64_phdr
	275	#define elf_note elf64_note
	276	#define elf_shdr elf64_shdr
	277	#define elf_sym elf64_sym
	278	#define elf_word uint64_t
82790064	279	#define elf_sword int64_t
5fe141fd FB	280	#define bswapSZs bswap64s
	281	#define SZ 64
	282	#include "elf_ops.h"
	283
	284	/* return < 0 if error, otherwise the number of bytes loaded in memory */
9ee3c029	285	int load_elf(const char *filename, int64_t virt_to_phys_addend,
74287114	286	uint64_t pentry, uint64_t lowaddr, uint64_t *highaddr)
5fe141fd	287	{
9042c0e2	288	int fd, data_order, host_data_order, must_swab, ret;
5fe141fd FB	289	uint8_t e_ident[EI_NIDENT];
5fe141fd FB	290
699e4642	291	fd = open(filename, O_RDONLY \| O_BINARY);
5fe141fd FB	292	if (fd < 0) {
	293	perror(filename);
	294	return -1;
	295	}
	296	if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
	297	goto fail;
	298	if (e_ident[0] != ELFMAG0 \|\|
	299	e_ident[1] != ELFMAG1 \|\|
	300	e_ident[2] != ELFMAG2 \|\|
	301	e_ident[3] != ELFMAG3)
	302	goto fail;
	303	#ifdef WORDS_BIGENDIAN
	304	data_order = ELFDATA2MSB;
	305	#else
	306	data_order = ELFDATA2LSB;
	307	#endif
	308	must_swab = data_order != e_ident[EI_DATA];
9042c0e2 TS	309
	310	#ifdef TARGET_WORDS_BIGENDIAN
	311	host_data_order = ELFDATA2MSB;
	312	#else
	313	host_data_order = ELFDATA2LSB;
	314	#endif
	315	if (host_data_order != e_ident[EI_DATA])
	316	return -1;
	317
5fe141fd FB	318	lseek(fd, 0, SEEK_SET);
5fe141fd FB	319	if (e_ident[EI_CLASS] == ELFCLASS64) {
74287114 TS	320	ret = load_elf64(fd, virt_to_phys_addend, must_swab, pentry,
74287114 TS	321	lowaddr, highaddr);
5fe141fd	322	} else {
74287114 TS	323	ret = load_elf32(fd, virt_to_phys_addend, must_swab, pentry,
74287114 TS	324	lowaddr, highaddr);
5fe141fd FB	325	}
	326
	327	close(fd);
	328	return ret;
	329
	330	fail:
	331	close(fd);
	332	return -1;
	333	}
1c7b3754 PB	334
	335	static void bswap_uboot_header(uboot_image_header_t *hdr)
	336	{
	337	#ifndef WORDS_BIGENDIAN
	338	bswap32s(&hdr->ih_magic);
	339	bswap32s(&hdr->ih_hcrc);
	340	bswap32s(&hdr->ih_time);
	341	bswap32s(&hdr->ih_size);
	342	bswap32s(&hdr->ih_load);
	343	bswap32s(&hdr->ih_ep);
	344	bswap32s(&hdr->ih_dcrc);
	345	#endif
	346	}
	347
	348	/* Load a U-Boot image. */
	349	int load_uboot(const char filename, target_ulong ep, int *is_linux)
	350	{
3b46e624	351
1c7b3754 PB	352	int fd;
	353	int size;
	354	uboot_image_header_t h;
	355	uboot_image_header_t *hdr = &h;
	356	uint8_t *data = NULL;
	357
	358	fd = open(filename, O_RDONLY \| O_BINARY);
	359	if (fd < 0)
	360	return -1;
	361
	362	size = read(fd, hdr, sizeof(uboot_image_header_t));
	363	if (size < 0)
	364	goto fail;
	365
	366	bswap_uboot_header(hdr);
	367
	368	if (hdr->ih_magic != IH_MAGIC)
	369	goto fail;
	370
	371	/* TODO: Implement Multi-File images. */
	372	if (hdr->ih_type == IH_TYPE_MULTI) {
	373	fprintf(stderr, "Unable to load multi-file u-boot images\n");
	374	goto fail;
	375	}
	376
	377	/* TODO: Implement compressed images. */
	378	if (hdr->ih_comp != IH_COMP_NONE) {
	379	fprintf(stderr, "Unable to load compressed u-boot images\n");
	380	goto fail;
	381	}
	382
	383	/* TODO: Check CPU type. */
	384	if (is_linux) {
	385	if (hdr->ih_type == IH_TYPE_KERNEL && hdr->ih_os == IH_OS_LINUX)
	386	*is_linux = 1;
	387	else
	388	*is_linux = 0;
	389	}
	390
	391	*ep = hdr->ih_ep;
	392	data = qemu_malloc(hdr->ih_size);
	393	if (!data)
	394	goto fail;
	395
	396	if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
	397	fprintf(stderr, "Error reading file\n");
	398	goto fail;
	399	}
	400
	401	cpu_physical_memory_write_rom(hdr->ih_load, data, hdr->ih_size);
	402
	403	return hdr->ih_size;
	404
	405	fail:
	406	if (data)
	407	qemu_free(data);
	408	close(fd);
	409	return -1;
	410	}