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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2018 Linaro Ltd.
* Sam Protsenko <semen.protsenko@linaro.org>
* Eugeniu Rosca <rosca.eugeniu@gmail.com>
*/
#include <command.h>
#include <env.h>
#include <image-android-dt.h>
#include <common.h>
#define OPT_INDEX "--index"
/*
* Current/working DTB/DTBO Android image address.
* Similar to 'working_fdt' variable in 'fdt' command.
*/
static ulong working_img;
static int do_adtimg_addr(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char *endp;
ulong hdr_addr;
if (argc != 2)
return CMD_RET_USAGE;
hdr_addr = hextoul(argv[1], &endp);
if (*endp != '\0') {
printf("Error: Wrong image address '%s'\n", argv[1]);
return CMD_RET_FAILURE;
}
/*
* Allow users to set an address prior to copying the DTB/DTBO
* image to that same address, i.e. skip header verification.
*/
working_img = hdr_addr;
return CMD_RET_SUCCESS;
}
static int adtimg_check_working_img(void)
{
if (!working_img) {
printf("Error: Please, call 'adtimg addr <addr>'. Aborting!\n");
return CMD_RET_FAILURE;
}
if (!android_dt_check_header(working_img)) {
printf("Error: Invalid image header at 0x%lx\n", working_img);
return CMD_RET_FAILURE;
}
return CMD_RET_SUCCESS;
}
static int do_adtimg_dump(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
if (argc != 1)
return CMD_RET_USAGE;
if (adtimg_check_working_img() != CMD_RET_SUCCESS)
return CMD_RET_FAILURE;
android_dt_print_contents(working_img);
return CMD_RET_SUCCESS;
}
static int adtimg_getopt_u32(char * const opt, char * const name, u32 *optval)
{
char *endp, *str;
u32 val;
if (!opt || !name || !optval)
return CMD_RET_FAILURE;
str = strchr(opt, '=');
if (!str) {
printf("Error: Option '%s' not followed by '='\n", name);
return CMD_RET_FAILURE;
}
if (*++str == '\0') {
printf("Error: Option '%s=' not followed by value\n", name);
return CMD_RET_FAILURE;
}
val = simple_strtoul(str, &endp, 0);
if (*endp != '\0') {
printf("Error: Wrong integer value '%s=%s'\n", name, str);
return CMD_RET_FAILURE;
}
*optval = val;
return CMD_RET_SUCCESS;
}
static int adtimg_getopt_index(int argc, char *const argv[], u32 *index,
char **avar, char **svar)
{
int ret;
if (!argv || !avar || !svar)
return CMD_RET_FAILURE;
if (argc > 3) {
printf("Error: Unexpected argument '%s'\n", argv[3]);
return CMD_RET_FAILURE;
}
ret = adtimg_getopt_u32(argv[0], OPT_INDEX, index);
if (ret != CMD_RET_SUCCESS)
return ret;
if (argc > 1)
*avar = argv[1];
if (argc > 2)
*svar = argv[2];
return CMD_RET_SUCCESS;
}
static int adtimg_get_dt_by_index(int argc, char *const argv[])
{
ulong addr;
u32 index, size;
int ret;
char *avar = NULL, *svar = NULL;
ret = adtimg_getopt_index(argc, argv, &index, &avar, &svar);
if (ret != CMD_RET_SUCCESS)
return ret;
if (!android_dt_get_fdt_by_index(working_img, index, &addr, &size))
return CMD_RET_FAILURE;
if (avar && svar) {
ret = env_set_hex(avar, addr);
if (ret) {
printf("Error: Can't set '%s' to 0x%lx\n", avar, addr);
return CMD_RET_FAILURE;
}
ret = env_set_hex(svar, size);
if (ret) {
printf("Error: Can't set '%s' to 0x%x\n", svar, size);
return CMD_RET_FAILURE;
}
} else if (avar) {
ret = env_set_hex(avar, addr);
if (ret) {
printf("Error: Can't set '%s' to 0x%lx\n", avar, addr);
return CMD_RET_FAILURE;
}
printf("0x%x (%d)\n", size, size);
} else {
printf("0x%lx, 0x%x (%d)\n", addr, size, size);
}
return CMD_RET_SUCCESS;
}
static int adtimg_get_dt(int argc, char *const argv[])
{
if (argc < 2) {
printf("Error: No options passed to '%s'\n", argv[0]);
return CMD_RET_FAILURE;
}
/* Strip off leading 'dt' command argument */
argc--;
argv++;
if (!strncmp(argv[0], OPT_INDEX, sizeof(OPT_INDEX) - 1))
return adtimg_get_dt_by_index(argc, argv);
printf("Error: Option '%s' not supported\n", argv[0]);
return CMD_RET_FAILURE;
}
static int do_adtimg_get(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
if (argc < 2) {
printf("Error: No arguments passed to '%s'\n", argv[0]);
return CMD_RET_FAILURE;
}
if (adtimg_check_working_img() != CMD_RET_SUCCESS)
return CMD_RET_FAILURE;
/* Strip off leading 'get' command argument */
argc--;
argv++;
if (!strcmp(argv[0], "dt"))
return adtimg_get_dt(argc, argv);
printf("Error: Wrong argument '%s'\n", argv[0]);
return CMD_RET_FAILURE;
}
static struct cmd_tbl cmd_adtimg_sub[] = {
U_BOOT_CMD_MKENT(addr, CONFIG_SYS_MAXARGS, 1, do_adtimg_addr, "", ""),
U_BOOT_CMD_MKENT(dump, CONFIG_SYS_MAXARGS, 1, do_adtimg_dump, "", ""),
U_BOOT_CMD_MKENT(get, CONFIG_SYS_MAXARGS, 1, do_adtimg_get, "", ""),
};
static int do_adtimg(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct cmd_tbl *cp;
cp = find_cmd_tbl(argv[1], cmd_adtimg_sub, ARRAY_SIZE(cmd_adtimg_sub));
/* Strip off leading 'adtimg' command argument */
argc--;
argv++;
if (!cp || argc > cp->maxargs)
return CMD_RET_USAGE;
if (flag == CMD_FLAG_REPEAT && !cmd_is_repeatable(cp))
return CMD_RET_SUCCESS;
return cp->cmd(cmdtp, flag, argc, argv);
}
U_BOOT_CMD(
adtimg, CONFIG_SYS_MAXARGS, 0, do_adtimg,
"manipulate dtb/dtbo Android image",
"addr <addr> - Set image location to <addr>\n"
"adtimg dump - Print out image contents\n"
"adtimg get dt --index=<index> [avar [svar]] - Get DT address/size by index\n"
"\n"
"Legend:\n"
" - <addr>: DTB/DTBO image address (hex) in RAM\n"
" - <index>: index (hex/dec) of desired DT in the image\n"
" - <avar>: variable name to contain DT address (hex)\n"
" - <svar>: variable name to contain DT size (hex)"
);
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