Function read_soft_fuse

util/amdfwtool/amdfwread.c:207–292

}

static int read_soft_fuse(FILE *fw, const embedded_firmware *fw_header)
{
	psp_directory_entry *current_entries = NULL;
	size_t num_current_entries = 0;

	uint32_t psp_offset = 0;
	/* 0xffffffff or 0x00000000 indicates that the offset is in new_psp_directory */
	if (fw_header->psp_directory != 0xffffffff && fw_header->psp_directory != 0x00000000)
		psp_offset = fw_header->psp_directory;
	else
		psp_offset = fw_header->new_psp_directory;

	psp_directory_header header;
	if (read_psp_directory(fw, psp_offset, PSP_COOKIE, &header,
		       &current_entries, &num_current_entries) != 0)
		return 1;

	while (1) {
		uint32_t l2_dir_offset = 0;
		uint32_t ish_dir_offset;
		ish_directory_table ish_dir;

		for (size_t i = 0; i < num_current_entries; i++) {
			uint32_t type = current_entries[i].type;
			uint64_t mode = current_entries[i].address_mode;
			uint64_t addr = current_entries[i].addr;
			uint64_t fuse;

			switch (type) {
			case AMD_FW_PSP_FUSE_CHAIN:
				fuse = mode << 62 | addr;

				printf("Soft-fuse:0x%lx\n", fuse);
				free(current_entries);
				return 0;

			case AMD_FW_PSP_L2_PTR:
				/* There's a second level PSP directory to read */
				if (l2_dir_offset != 0) {
					ERR("Duplicate PSP L2 Entry, prior offset: %08x\n",
										l2_dir_offset);
					free(current_entries);
					return 1;
				}

				l2_dir_offset = relative_offset(psp_offset, addr, mode);
				break;

			case AMD_FW_PSP_RECOVERYAB_A:
				if (l2_dir_offset != 0) {
					ERR("Duplicate PSP L2 Entry, prior offset: %08x\n",
										l2_dir_offset);
					free(current_entries);
					return 1;
				}

				ish_dir_offset = relative_offset(psp_offset, addr, AMD_ADDR_REL_BIOS);
				if (read_ish_directory(fw, ish_dir_offset, &ish_dir) != 0) {