Function relative_offset

util/amdfwtool/amdfwread.c:69–96

Converts addresses to be relative to the start of the file */

/* Converts addresses to be relative to the start of the file */
static uint64_t relative_offset(uint32_t header_offset, uint64_t addr, uint64_t mode)
{
	switch (mode) {
	/* Since this utility operates on the BIOS file, physical address is converted
	   relative to the start of the BIOS file. */
	case AMD_ADDR_PHYSICAL:
		if (addr < MAX(SPI_ROM_BASE, 0xffffffff - rom_size + 1) ||
		    addr > 0xffffffff) {
			ERR("Invalid address(%lx) or mode(%lx)\n", addr, mode);
			exit(1);
		}
		return file_rel_mask(addr);

	case AMD_ADDR_REL_BIOS:
		if (addr >= rom_size) {
			ERR("Invalid address(%lx) or mode(%lx)\n", addr, mode);
			exit(1);
		}
		return file_rel_mask(addr);

	case AMD_ADDR_REL_TAB:
		return addr + header_offset;

	default:
		ERR("Unsupported mode %lu\n", mode);
		exit(1);
	}
}

static int read_header(FILE *fw, uint32_t offset, void *header, size_t header_size)
{