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cmd/arm: meson: sm: introduce efusedump command

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Using this command user can print efuse memory:

$ sm efusedump 0 10
  00000000: ff 00 31 00 00 ff 66 00 00 00      ..1...f...

Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230110105650.54580-5-avromanov@sberdevices.ru
[narmstrong: added display_options.h include for print_buffer()]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Alexey Romanov 2023-01-10 13:56:49 +03:00 committed by Neil Armstrong
parent 23435cfb3a
commit ac7fdbc35d
1 changed files with 36 additions and 1 deletions
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37
cmd/meson/sm.c
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@ -5,6 +5,7 @@
* Author: Beniamino Galvani <b.galvani@gmail.com>
* Author: Vyacheslav Bocharov <adeep@lexina.in>
* Author: Neil Armstrong <narmstrong@baylibre.com>
* Author: Alexey Romanov <avromanov@sberdevices.ru>
*/
#include <command.h>
@ -12,6 +13,7 @@
#include <env.h>
#include <asm/arch/sm.h>
#include <stdlib.h>
#include <display_options.h>
static int do_sm_serial(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
@ -119,11 +121,43 @@ static int do_efuse_write(struct cmd_tbl *cmdtp, int flag, int argc,
return CMD_RET_SUCCESS;
}
static int do_efuse_dump(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
ulong offset, size;
u8 *buffer;
int ret;
if (argc != 3)
return CMD_RET_USAGE;
offset = simple_strtoul(argv[1], NULL, 0);
size = simple_strtoul(argv[2], NULL, 0);
buffer = malloc(size);
if (!buffer) {
pr_err("Failed to allocate %lu bytes\n", size);
return CMD_RET_FAILURE;
}
ret = meson_sm_read_efuse(offset, (void *)buffer, size);
if (ret != size) {
ret = CMD_RET_FAILURE;
goto free_buffer;
}
print_buffer(0, buffer, 1, size, 0);
free_buffer:
free(buffer);
return ret;
}
static struct cmd_tbl cmd_sm_sub[] = {
U_BOOT_CMD_MKENT(serial, 2, 1, do_sm_serial, "", ""),
U_BOOT_CMD_MKENT(reboot_reason, 1, 1, do_sm_reboot_reason, "", ""),
U_BOOT_CMD_MKENT(efuseread, 4, 1, do_efuse_read, "", ""),
U_BOOT_CMD_MKENT(efusewrite, 4, 0, do_efuse_write, "", ""),
U_BOOT_CMD_MKENT(efusedump, 3, 1, do_efuse_dump, "", ""),
};
static int do_sm(struct cmd_tbl *cmdtp, int flag, int argc,
@ -152,5 +186,6 @@ U_BOOT_CMD(
"serial <address> - read chip unique id to memory address\n"
"sm reboot_reason [name] - get reboot reason and store to environment\n"
"sm efuseread <offset> <size> <address> - read efuse to memory address\n"
"sm efusewrite <offset> <size> <address> - write into efuse from memory address"
"sm efusewrite <offset> <size> <address> - write into efuse from memory address\n"
"sm efusedump <offset> <size> - dump efuse data range to console"
);