diff options
Diffstat (limited to 'util/bimgtool')
| -rw-r--r-- | util/bimgtool/Makefile | 17 | ||||
| -rw-r--r-- | util/bimgtool/bimgtool.c | 222 |
2 files changed, 239 insertions, 0 deletions
diff --git a/util/bimgtool/Makefile b/util/bimgtool/Makefile new file mode 100644 index 0000000000..3bd0f07a7d --- /dev/null +++ b/util/bimgtool/Makefile @@ -0,0 +1,17 @@ +obj ?= $(shell pwd) + +HOSTCC ?= gcc +CFLAGS ?= -g +CFLAGS += -D_7ZIP_ST +CFLAGS += -Wall -Wundef -Wstrict-prototypes -Wmissing-prototypes +CFLAGS += -Wwrite-strings -Wredundant-decls -Wno-trigraphs +CFLAGS += -Wstrict-aliasing -Wshadow -Werror +LDFLAGS += -g + +all: dep $(obj)/bimgtool + +clean: + rm -f $(obj)/bimgtool + +$(obj)/bimgtool: bimgtool.c + $(HOSTCC) $(CFLAGS) -o $@ $^ diff --git a/util/bimgtool/bimgtool.c b/util/bimgtool/bimgtool.c new file mode 100644 index 0000000000..eed9248692 --- /dev/null +++ b/util/bimgtool/bimgtool.c @@ -0,0 +1,222 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Imagination Technologies Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; version 2 of + * the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#include <errno.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <sys/types.h> + +struct bimg_header { + uint32_t magic; + uint16_t ver_major; + uint16_t ver_minor; + uint32_t data_size; + uint32_t entry_addr; + uint32_t flags; + uint32_t data_crc; + uint32_t crc; +} __attribute__((packed)); + +struct bimg_data_header { + uint32_t size; + uint32_t dest_addr; + uint16_t crc; +} __attribute__((packed)); + +#define BIMG_MAGIC /* y */ 0xabbadaba /* doo! */ + +#define BIMG_OP_MASK (0xf << 0) +#define BIMG_OP_EXEC_RETURN (0x1 << 0) +#define BIMG_OP_EXEC_NO_RETURN (0x2 << 0) +#define BIMG_DATA_CHECKSUM (0x1 << 4) + +#define MAX_RECORD_BYTES 0x8000 + +#define CRC_INIT 0xffff + +#define error(msg...) fprintf(stderr, "ERROR: " msg) + +#define error_ret(ret, msg...) { \ + error(msg); \ + return ret; \ +} + +static uint16_t crc_x25(uint16_t crc, void *void_buf, size_t size) +{ + static const uint16_t crc_table[16] = { + 0x0000, 0x1021, 0x2042, 0x3063, + 0x4084, 0x50a5, 0x60c6, 0x70e7, + 0x8108, 0x9129, 0xa14a, 0xb16b, + 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, + }; + uint8_t *buf, data; + + for (buf = void_buf; size; size--) { + data = *buf++; + crc = (crc << 4) ^ crc_table[((crc >> 12) ^ (data >> 4)) & 0xf]; + crc = (crc << 4) ^ crc_table[((crc >> 12) ^ (data >> 0)) & 0xf]; + } + + return crc; +} + +static int write_binary(FILE *out, FILE *in, struct bimg_header *hdr) +{ + static uint8_t file_buf[MAX_RECORD_BYTES]; + struct bimg_data_header data_hdr; + size_t n_written; + + data_hdr.dest_addr = hdr->entry_addr; + + while ((data_hdr.size = fread(file_buf, 1, sizeof(file_buf), in))) { + data_hdr.crc = crc_x25(CRC_INIT, &data_hdr, + sizeof(data_hdr) - sizeof(data_hdr.crc)); + + if (fwrite(&data_hdr, sizeof(data_hdr), 1, out) != 1) + error_ret(-EIO, "Failed to write data header: %d\n", + errno); + + n_written = fwrite(file_buf, 1, data_hdr.size, out); + if (n_written != data_hdr.size) + error_ret(-EIO, "Failed to write to output file: %d\n", + errno); + + data_hdr.dest_addr += n_written; + hdr->data_size += sizeof(data_hdr) + n_written; + hdr->data_crc = crc_x25(hdr->data_crc, file_buf, n_written); + } + + if (ferror(in)) + error_ret(-EIO, "Failed to read input file\n"); + + return 0; +} + +static int write_final(FILE *out, struct bimg_header *hdr) +{ + struct bimg_data_header data_hdr = { + .size = 0, + .dest_addr = ~0, + }; + + data_hdr.crc = crc_x25(CRC_INIT, &data_hdr, + sizeof(data_hdr) - sizeof(data_hdr.crc)); + + if (fwrite(&data_hdr, sizeof(data_hdr), 1, out) != 1) + error_ret(-EIO, "Failed to write data header: %d\n", errno); + + hdr->data_size += sizeof(data_hdr); + + return 0; +} + +static void usage(FILE *f) +{ + fprintf(f, + "Usage: bimgtool <input> <output> <base-address>\n" + "\n" + "bimgtool is a simple tool which generates boot images in the " + "BIMG format used in systems designed by Imagination " + "Technologies, for example the Danube SoC. This version of the " + "tool generates BIMG version 1.0 images.\n" + "\n" + " input: The binary file to be converted to a BIMG\n" + " output: The name of the output BIMG file\n" + " base-address: The address in memory at which you wish the " + "input binary to be loaded.\n"); +} + +int main(int argc, char *argv[]) +{ + const char *in_filename, *out_filename; + FILE *in_file, *out_file; + int err; + struct bimg_header hdr = { + .magic = BIMG_MAGIC, + .ver_major = 1, + .ver_minor = 0, + .flags = BIMG_OP_EXEC_NO_RETURN | BIMG_DATA_CHECKSUM, + .data_crc = CRC_INIT, + }; + + if (argc != 4) { + usage(stderr); + goto out_err; + } + + in_filename = argv[1]; + out_filename = argv[2]; + hdr.entry_addr = strtoul(argv[3], NULL, 16); + + in_file = fopen(in_filename, "r"); + if (!in_file) { + error("Failed to open input file '%s'\n", in_filename); + goto out_err; + } + + out_file = fopen(out_filename, "w"); + if (!out_file) { + error("Failed to open output file '%s'\n", out_filename); + goto out_err_close_in; + } + + if (fseek(out_file, sizeof(hdr), SEEK_SET)) { + error("Failed to seek past header: %d\n", errno); + goto out_err_close_out; + } + + err = write_binary(out_file, in_file, &hdr); + if (err) { + error("Failed to write binary: %d\n", err); + goto out_err_close_out; + } + + err = write_final(out_file, &hdr); + if (err) { + error("Failed to write final record: %d\n", err); + goto out_err_close_out; + } + + hdr.crc = crc_x25(CRC_INIT, &hdr, sizeof(hdr) - sizeof(hdr.crc)); + + if (fseek(out_file, 0, SEEK_SET)) { + error("Failed to seek to header: %d\n", errno); + goto out_err_close_out; + } + + if (fwrite(&hdr, sizeof(hdr), 1, out_file) != 1) { + error("Failed to write header: %d\n", errno); + goto out_err_close_out; + } + + fclose(in_file); + fclose(out_file); + return EXIT_SUCCESS; + +out_err_close_out: + fclose(out_file); +out_err_close_in: + fclose(in_file); +out_err: + return EXIT_FAILURE; +} |