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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2016 Beniamino Galvani
*
* 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>
#include <common.h>
#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[])
{
ulong address;
int ret;
if (argc < 2)
return CMD_RET_USAGE;
address = simple_strtoul(argv[1], NULL, 0);
ret = meson_sm_get_serial((void *)address, SM_SERIAL_SIZE);
if (ret)
return CMD_RET_FAILURE;
return CMD_RET_SUCCESS;
}
#define MAX_REBOOT_REASONS 14
static const char *reboot_reasons[MAX_REBOOT_REASONS] = {
[REBOOT_REASON_COLD] = "cold_boot",
[REBOOT_REASON_NORMAL] = "normal",
[REBOOT_REASON_RECOVERY] = "recovery",
[REBOOT_REASON_UPDATE] = "update",
[REBOOT_REASON_FASTBOOT] = "fastboot",
[REBOOT_REASON_SUSPEND_OFF] = "suspend_off",
[REBOOT_REASON_HIBERNATE] = "hibernate",
[REBOOT_REASON_BOOTLOADER] = "bootloader",
[REBOOT_REASON_SHUTDOWN_REBOOT] = "shutdown_reboot",
[REBOOT_REASON_RPMBP] = "rpmbp",
[REBOOT_REASON_CRASH_DUMP] = "crash_dump",
[REBOOT_REASON_KERNEL_PANIC] = "kernel_panic",
[REBOOT_REASON_WATCHDOG_REBOOT] = "watchdog_reboot",
};
static int do_sm_reboot_reason(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
const char *reason_str;
char *destarg = NULL;
int reason;
if (argc > 1)
destarg = argv[1];
reason = meson_sm_get_reboot_reason();
if (reason < 0)
return CMD_RET_FAILURE;
if (reason >= MAX_REBOOT_REASONS ||
!reboot_reasons[reason])
reason_str = "unknown";
else
reason_str = reboot_reasons[reason];
if (destarg)
env_set(destarg, reason_str);
else
printf("reboot reason: %s (%x)\n", reason_str, reason);
return CMD_RET_SUCCESS;
}
static int do_efuse_read(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
ulong address, offset, size;
int ret;
if (argc < 4)
return CMD_RET_USAGE;
offset = simple_strtoul(argv[1], NULL, 0);
size = simple_strtoul(argv[2], NULL, 0);
address = simple_strtoul(argv[3], NULL, 0);
ret = meson_sm_read_efuse(offset, (void *)address, size);
if (ret != size)
return CMD_RET_FAILURE;
return CMD_RET_SUCCESS;
}
static int do_efuse_write(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
ulong address, offset, size;
int ret;
if (argc < 4)
return CMD_RET_USAGE;
offset = simple_strtoul(argv[1], NULL, 0);
size = simple_strtoul(argv[2], NULL, 0);
address = simple_strtoul(argv[3], NULL, 0);
ret = meson_sm_write_efuse(offset, (void *)address, size);
if (ret != size)
return CMD_RET_FAILURE;
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,
char *const argv[])
{
struct cmd_tbl *c;
if (argc < 2)
return CMD_RET_USAGE;
/* Strip off leading 'sm' command argument */
argc--;
argv++;
c = find_cmd_tbl(argv[0], &cmd_sm_sub[0], ARRAY_SIZE(cmd_sm_sub));
if (c)
return c->cmd(cmdtp, flag, argc, argv);
else
return CMD_RET_USAGE;
}
U_BOOT_CMD(
sm, 5, 0, do_sm,
"Secure Monitor Control",
"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\n"
"sm efusedump <offset> <size> - dump efuse data range to console"
);
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