diff options
Diffstat (limited to 'qemu/roms/u-boot/tools/default_image.c')
| -rw-r--r-- | qemu/roms/u-boot/tools/default_image.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/tools/default_image.c b/qemu/roms/u-boot/tools/default_image.c new file mode 100644 index 000000000..0a0792e50 --- /dev/null +++ b/qemu/roms/u-boot/tools/default_image.c @@ -0,0 +1,194 @@ +/* + * (C) Copyright 2008 Semihalf + * + * (C) Copyright 2000-2004 + * DENX Software Engineering + * Wolfgang Denk, wd@denx.de + * + * Updated-by: Prafulla Wadaskar <prafulla@marvell.com> + * default_image specific code abstracted from mkimage.c + * some functions added to address abstraction + * + * All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include "imagetool.h" +#include <image.h> +#include <u-boot/crc.h> + +static image_header_t header; + +static int image_check_image_types(uint8_t type) +{ + if (((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT)) || + (type == IH_TYPE_KERNEL_NOLOAD)) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +static int image_check_params(struct image_tool_params *params) +{ + return ((params->dflag && (params->fflag || params->lflag)) || + (params->fflag && (params->dflag || params->lflag)) || + (params->lflag && (params->dflag || params->fflag))); +} + +static int image_verify_header(unsigned char *ptr, int image_size, + struct image_tool_params *params) +{ + uint32_t len; + const unsigned char *data; + uint32_t checksum; + image_header_t header; + image_header_t *hdr = &header; + + /* + * create copy of header so that we can blank out the + * checksum field for checking - this can't be done + * on the PROT_READ mapped data. + */ + memcpy(hdr, ptr, sizeof(image_header_t)); + + if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) { + fprintf(stderr, + "%s: Bad Magic Number: \"%s\" is no valid image\n", + params->cmdname, params->imagefile); + return -FDT_ERR_BADMAGIC; + } + + data = (const unsigned char *)hdr; + len = sizeof(image_header_t); + + checksum = be32_to_cpu(hdr->ih_hcrc); + hdr->ih_hcrc = cpu_to_be32(0); /* clear for re-calculation */ + + if (crc32(0, data, len) != checksum) { + fprintf(stderr, + "%s: ERROR: \"%s\" has bad header checksum!\n", + params->cmdname, params->imagefile); + return -FDT_ERR_BADSTATE; + } + + data = (const unsigned char *)ptr + sizeof(image_header_t); + len = image_size - sizeof(image_header_t) ; + + checksum = be32_to_cpu(hdr->ih_dcrc); + if (crc32(0, data, len) != checksum) { + fprintf(stderr, + "%s: ERROR: \"%s\" has corrupted data!\n", + params->cmdname, params->imagefile); + return -FDT_ERR_BADSTRUCTURE; + } + return 0; +} + +static void image_set_header(void *ptr, struct stat *sbuf, int ifd, + struct image_tool_params *params) +{ + uint32_t checksum; + + image_header_t * hdr = (image_header_t *)ptr; + + checksum = crc32(0, + (const unsigned char *)(ptr + + sizeof(image_header_t)), + sbuf->st_size - sizeof(image_header_t)); + + /* Build new header */ + image_set_magic(hdr, IH_MAGIC); + image_set_time(hdr, sbuf->st_mtime); + image_set_size(hdr, sbuf->st_size - sizeof(image_header_t)); + image_set_load(hdr, params->addr); + image_set_ep(hdr, params->ep); + image_set_dcrc(hdr, checksum); + image_set_os(hdr, params->os); + image_set_arch(hdr, params->arch); + image_set_type(hdr, params->type); + image_set_comp(hdr, params->comp); + + image_set_name(hdr, params->imagename); + + checksum = crc32(0, (const unsigned char *)hdr, + sizeof(image_header_t)); + + image_set_hcrc(hdr, checksum); +} + +static int image_save_datafile(struct image_tool_params *params, + ulong file_data, ulong file_len) +{ + int dfd; + const char *datafile = params->outfile; + + dfd = open(datafile, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, + S_IRUSR | S_IWUSR); + if (dfd < 0) { + fprintf(stderr, "%s: Can't open \"%s\": %s\n", + params->cmdname, datafile, strerror(errno)); + return -1; + } + + if (write(dfd, (void *)file_data, file_len) != (ssize_t)file_len) { + fprintf(stderr, "%s: Write error on \"%s\": %s\n", + params->cmdname, datafile, strerror(errno)); + close(dfd); + return -1; + } + + close(dfd); + + return 0; +} + +static int image_extract_datafile(void *ptr, struct image_tool_params *params) +{ + const image_header_t *hdr = (const image_header_t *)ptr; + ulong file_data; + ulong file_len; + + if (image_check_type(hdr, IH_TYPE_MULTI)) { + ulong idx = params->pflag; + ulong count; + + /* get the number of data files present in the image */ + count = image_multi_count(hdr); + + /* retrieve the "data file" at the idx position */ + image_multi_getimg(hdr, idx, &file_data, &file_len); + + if ((file_len == 0) || (idx >= count)) { + fprintf(stderr, "%s: No such data file %ld in \"%s\"\n", + params->cmdname, idx, params->imagefile); + return -1; + } + } else { + file_data = image_get_data(hdr); + file_len = image_get_size(hdr); + } + + /* save the "data file" into the file system */ + return image_save_datafile(params, file_data, file_len); +} + +/* + * Default image type parameters definition + */ +static struct image_type_params defimage_params = { + .name = "Default Image support", + .header_size = sizeof(image_header_t), + .hdr = (void*)&header, + .check_image_type = image_check_image_types, + .verify_header = image_verify_header, + .print_header = image_print_contents, + .set_header = image_set_header, + .extract_datafile = image_extract_datafile, + .check_params = image_check_params, +}; + +void init_default_image_type(void) +{ + register_image_type(&defimage_params); +} |