u-boot/tools/update_octeon_header.c

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 Marvell International Ltd.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <arpa/inet.h>
#include <linux/compiler.h>
#include <u-boot/crc.h>
#include "mkimage.h"
#include "../arch/mips/mach-octeon/include/mach/cvmx-bootloader.h"
#define BUF_SIZE (16 * 1024)
#define NAME_LEN 100
/* word offset */
#define WOFFSETOF(type, elem) (offsetof(type, elem) / 4)
static int stage2_flag;
static int stage_1_5_flag;
static int stage_1_flag;
/* Getoptions variables must be global */
static int failsafe_flag;
static int pciboot_flag;
static int env_flag;
static const struct option long_options[] = {
/* These options set a flag. */
{"failsafe", no_argument, &failsafe_flag, 1},
{"pciboot", no_argument, &pciboot_flag, 1},
{"nandstage2", no_argument, &stage2_flag, 1},
{"spistage2", no_argument, &stage2_flag, 1},
{"norstage2", no_argument, &stage2_flag, 1},
{"stage2", no_argument, &stage2_flag, 1},
{"stage1.5", no_argument, &stage_1_5_flag, 1},
{"stage1", no_argument, &stage_1_flag, 1},
{"environment", no_argument, &env_flag, 1},
/*
* These options don't set a flag.
* We distinguish them by their indices.
*/
{"board", required_argument, 0, 0},
{"text_base", required_argument, 0, 0},
{0, 0, 0, 0}
};
static int lookup_board_type(char *board_name)
{
int i;
int board_type = 0;
char *substr = NULL;
/* Detect stage 2 bootloader boards */
if (strcasestr(board_name, "_stage2")) {
printf("Stage 2 bootloader detected from substring %s in name %s\n",
"_stage2", board_name);
stage2_flag = 1;
} else {
printf("Stage 2 bootloader NOT detected from name \"%s\"\n",
board_name);
}
if (strcasestr(board_name, "_stage1")) {
printf("Stage 1 bootloader detected from substring %s in name %s\n",
"_stage1", board_name);
stage_1_flag = 1;
}
/* Generic is a special case since there are numerous sub-types */
if (!strncasecmp("generic", board_name, strlen("generic")))
return CVMX_BOARD_TYPE_GENERIC;
/*
* If we're an eMMC stage 2 bootloader, cut off the _emmc_stage2
* part of the name.
*/
substr = strcasestr(board_name, "_emmc_stage2");
if (substr && (substr[strlen("_emmc_stage2")] == '\0')) {
/*return CVMX_BOARD_TYPE_GENERIC;*/
printf(" Converting board name %s to ", board_name);
*substr = '\0';
printf("%s\n", board_name);
}
/*
* If we're a NAND stage 2 bootloader, cut off the _nand_stage2
* part of the name.
*/
substr = strcasestr(board_name, "_nand_stage2");
if (substr && (substr[strlen("_nand_stage2")] == '\0')) {
/*return CVMX_BOARD_TYPE_GENERIC;*/
printf(" Converting board name %s to ", board_name);
*substr = '\0';
printf("%s\n", board_name);
}
/*
* If we're a SPI stage 2 bootloader, cut off the _spi_stage2
* part of the name.
*/
substr = strcasestr(board_name, "_spi_stage2");
if (substr && (substr[strlen("_spi_stage2")] == '\0')) {
printf(" Converting board name %s to ", board_name);
*substr = '\0';
printf("%s\n", board_name);
}
for (i = CVMX_BOARD_TYPE_NULL; i < CVMX_BOARD_TYPE_MAX; i++)
if (!strcasecmp(cvmx_board_type_to_string(i), board_name))
board_type = i;
for (i = CVMX_BOARD_TYPE_CUST_DEFINED_MIN;
i < CVMX_BOARD_TYPE_CUST_DEFINED_MAX; i++)
if (!strncasecmp(cvmx_board_type_to_string(i), board_name,
strlen(cvmx_board_type_to_string(i))))
board_type = i;
for (i = CVMX_BOARD_TYPE_CUST_PRIVATE_MIN;
i < CVMX_BOARD_TYPE_CUST_PRIVATE_MAX; i++)
if (!strncasecmp(cvmx_board_type_to_string(i), board_name,
strlen(cvmx_board_type_to_string(i))))
board_type = i;
return board_type;
}
static void usage(void)
{
printf("Usage: update_octeon_header <filename> <board_name> [--failsafe] [--text_base=0xXXXXX]\n");
}
int main(int argc, char *argv[])
{
int fd;
uint8_t buf[BUF_SIZE];
uint32_t data_crc = 0;
int len;
int data_len = 0;
struct bootloader_header header;
char filename[NAME_LEN];
int i;
int option_index = 0; /* getopt_long stores the option index here. */
char board_name[NAME_LEN] = { 0 };
char tmp_board_name[NAME_LEN] = { 0 };
int c;
int board_type = 0;
unsigned long long address = 0;
ssize_t ret;
const char *type_str = NULL;
int hdr_size = sizeof(struct bootloader_header);
/*
* Compile time check, if the size of the bootloader_header structure
* has changed.
*/
compiletime_assert(sizeof(struct bootloader_header) == 192,
"Octeon bootloader header size changed (!= 192)!");
/* Bail out, if argument count is incorrect */
if (argc < 3) {
usage();
return -1;
}
debug("header size is: %d bytes\n", hdr_size);
/* Parse command line options using getopt_long */
while (1) {
c = getopt_long(argc, argv, "h", long_options, &option_index);
/* Detect the end of the options. */
if (c == -1)
break;
switch (c) {
/* All long options handled in case 0 */
case 0:
/* If this option set a flag, do nothing else now. */
if (long_options[option_index].flag != 0)
break;
debug("option(l) %s", long_options[option_index].name);
if (!optarg) {
usage();
return -1;
}
debug(" with arg %s\n", optarg);
if (!strcmp(long_options[option_index].name, "board")) {
if (strlen(optarg) >= NAME_LEN) {
printf("strncpy() issue detected!");
exit(-1);
}
strncpy(board_name, optarg, NAME_LEN);
printf("Using user supplied board name: %s\n",
board_name);
} else if (!strcmp(long_options[option_index].name,
"text_base")) {
address = strtoull(optarg, NULL, 0);
printf("Address of image is: 0x%llx\n",
(unsigned long long)address);
if (!(address & 0xFFFFFFFFULL << 32)) {
if (address & 1 << 31) {
address |= 0xFFFFFFFFULL << 32;
printf("Converting address to 64 bit compatibility space: 0x%llx\n",
address);
}
}
}
break;
case 'h':
case '?':
/* getopt_long already printed an error message. */
usage();
return -1;
default:
abort();
}
}
if (optind < argc) {
/*
* We only support one argument - an optional bootloader
* file name
*/
if (argc - optind > 2) {
fprintf(stderr, "non-option ARGV-elements: ");
while (optind < argc)
fprintf(stderr, "%s ", argv[optind++]);
fprintf(stderr, "\n");
usage();
return -1;
}
}
if (strlen(argv[optind]) >= NAME_LEN) {
fprintf(stderr, "strncpy() issue detected!");
exit(-1);
}
strncpy(filename, argv[optind], NAME_LEN);
if (board_name[0] == '\0') {
if (strlen(argv[optind + 1]) >= NAME_LEN) {
fprintf(stderr, "strncpy() issue detected!");
exit(-1);
}
strncpy(board_name, argv[optind + 1], NAME_LEN);
}
if (strlen(board_name) >= NAME_LEN) {
fprintf(stderr, "strncpy() issue detected!");
exit(-1);
}
strncpy(tmp_board_name, board_name, NAME_LEN);
fd = open(filename, O_RDWR);
if (fd < 0) {
fprintf(stderr, "Unable to open file: %s\n", filename);
exit(-1);
}
if (failsafe_flag)
printf("Setting failsafe flag\n");
if (strlen(board_name)) {
int offset = 0;
printf("Supplied board name of: %s\n", board_name);
if (strstr(board_name, "failsafe")) {
failsafe_flag = 1;
printf("Setting failsafe flag based on board name\n");
}
/* Skip leading octeon_ if present. */
if (!strncmp(board_name, "octeon_", 7))
offset = 7;
/*
* Check to see if 'failsafe' is in the name. If so, set the
* failsafe flag. Also, ignore extra trailing characters on
* passed parameter when comparing against board names.
* We actually use the configuration name from u-boot, so it
* may have some other variant names. Variants other than
* failsafe _must_ be passed to this program explicitly
*/
board_type = lookup_board_type(board_name + offset);
if (!board_type) {
/* Retry with 'cust_' prefix to catch boards that are
* in the customer section (such as nb5)
*/
sprintf(tmp_board_name, "cust_%s", board_name + offset);
board_type = lookup_board_type(tmp_board_name);
}
/* reset to original value */
strncpy(tmp_board_name, board_name, NAME_LEN);
if (!board_type) {
/*
* Retry with 'cust_private_' prefix to catch boards
* that are in the customer private section
*/
sprintf(tmp_board_name, "cust_private_%s",
board_name + offset);
board_type = lookup_board_type(tmp_board_name);
}
if (!board_type) {
fprintf(stderr,
"ERROR: unable to determine board type\n");
exit(-1);
}
printf("Board type is: %d: %s\n", board_type,
cvmx_board_type_to_string(board_type));
} else {
fprintf(stderr, "Board name must be specified!\n");
exit(-1);
}
/*
* Check to see if there is either an existing header, or that there
* are zero valued bytes where we want to put the header
*/
len = read(fd, buf, BUF_SIZE);
if (len > 0) {
/*
* Copy the header, as the first word (jump instruction, needs
* to remain the same.
*/
memcpy(&header, buf, hdr_size);
/*
* Check to see if we have zero bytes (excluding first 4, which
* are the jump instruction)
*/
for (i = 1; i < hdr_size / 4; i++) {
if (((uint32_t *)buf)[i]) {
fprintf(stderr,
"ERROR: non-zero word found %x in location %d required for header, aborting\n",
((uint32_t *)buf)[i], i);
exit(-1);
}
}
printf("Zero bytes found in header location, adding header.\n");
} else {
fprintf(stderr, "Unable to read from file %s\n", filename);
exit(-1);
}
/* Read data bytes and generate CRC */
lseek(fd, hdr_size, SEEK_SET);
while ((len = read(fd, buf, BUF_SIZE)) > 0) {
data_crc = crc32(data_crc, buf, len);
data_len += len;
}
printf("CRC of data: 0x%x, length: %d\n", data_crc, data_len);
/* Now create the new header */
header.magic = htonl(BOOTLOADER_HEADER_MAGIC);
header.maj_rev = htons(BOOTLOADER_HEADER_CURRENT_MAJOR_REV);
header.min_rev = htons(BOOTLOADER_HEADER_CURRENT_MINOR_REV);
header.dlen = htonl(data_len);
header.dcrc = htonl(data_crc);
header.board_type = htons(board_type);
header.address = address;
if (failsafe_flag)
header.flags |= htonl(BL_HEADER_FLAG_FAILSAFE);
printf("Stage 2 flag is %sset\n", stage2_flag ? "" : "not ");
printf("Stage 1 flag is %sset\n", stage_1_flag ? "" : "not ");
if (pciboot_flag)
header.image_type = htons(BL_HEADER_IMAGE_PCIBOOT);
else if (stage2_flag)
header.image_type = htons(BL_HEADER_IMAGE_STAGE2);
else if (stage_1_flag)
header.image_type = htons(BL_HEADER_IMAGE_STAGE1);
else if (env_flag)
header.image_type = htons(BL_HEADER_IMAGE_UBOOT_ENV);
else if (stage_1_5_flag || stage_1_flag)
header.image_type = htons(BL_HEADER_IMAGE_PRE_UBOOT);
else
header.image_type = htons(BL_HEADER_IMAGE_NOR);
switch (ntohs(header.image_type)) {
case BL_HEADER_IMAGE_UNKNOWN:
type_str = "Unknown";
break;
case BL_HEADER_IMAGE_STAGE1:
type_str = "Stage 1";
break;
case BL_HEADER_IMAGE_STAGE2:
type_str = "Stage 2";
break;
case BL_HEADER_IMAGE_PRE_UBOOT:
type_str = "Pre-U-Boot";
break;
case BL_HEADER_IMAGE_STAGE3:
type_str = "Stage 3";
break;
case BL_HEADER_IMAGE_NOR:
type_str = "NOR";
break;
case BL_HEADER_IMAGE_PCIBOOT:
type_str = "PCI Boot";
break;
case BL_HEADER_IMAGE_UBOOT_ENV:
type_str = "U-Boot Environment";
break;
default:
if (ntohs(header.image_type) >= BL_HEADER_IMAGE_CUST_RESERVED_MIN &&
ntohs(header.image_type) <= BL_HEADER_IMAGE_CUST_RESERVED_MAX)
type_str = "Customer Reserved";
else
type_str = "Unsupported";
}
printf("Header image type: %s\n", type_str);
header.hlen = htons(hdr_size);
/* Now compute header CRC over all of the header excluding the CRC */
header.hcrc = crc32(0, (void *)&header, 12);
header.hcrc = htonl(crc32(header.hcrc, ((void *)&(header)) + 16,
hdr_size - 16));
/* Seek to beginning of file */
lseek(fd, 0, SEEK_SET);
/* Write header to file */
ret = write(fd, &header, hdr_size);
if (ret < 0)
perror("write");
close(fd);
printf("Header CRC: 0x%x\n", ntohl(header.hcrc));
return 0;
}