mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-16 16:23:14 +00:00
f4cb5d69c2
Add dedicated command to register in fuse a public hash key provided by keygen tool. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
|
|
/*
|
|
* Copyright (C) 2019, STMicroelectronics - All Rights Reserved
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <console.h>
|
|
#include <misc.h>
|
|
#include <dm/device.h>
|
|
#include <dm/uclass.h>
|
|
|
|
#define STM32_OTP_HASH_KEY_START 24
|
|
#define STM32_OTP_HASH_KEY_SIZE 8
|
|
|
|
static void read_hash_value(u32 addr)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < STM32_OTP_HASH_KEY_SIZE; i++) {
|
|
printf("OTP value %i: %x\n", STM32_OTP_HASH_KEY_START + i,
|
|
__be32_to_cpu(*(u32 *)addr));
|
|
addr += 4;
|
|
}
|
|
}
|
|
|
|
static void fuse_hash_value(u32 addr, bool print)
|
|
{
|
|
struct udevice *dev;
|
|
u32 word, val;
|
|
int i, ret;
|
|
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stm32mp_bsec),
|
|
&dev);
|
|
if (ret) {
|
|
pr_err("Can't find stm32mp_bsec driver\n");
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < STM32_OTP_HASH_KEY_SIZE; i++) {
|
|
if (print)
|
|
printf("Fuse OTP %i : %x\n",
|
|
STM32_OTP_HASH_KEY_START + i,
|
|
__be32_to_cpu(*(u32 *)addr));
|
|
|
|
word = STM32_OTP_HASH_KEY_START + i;
|
|
val = __be32_to_cpu(*(u32 *)addr);
|
|
misc_write(dev, STM32_BSEC_OTP(word), &val, 4);
|
|
|
|
addr += 4;
|
|
}
|
|
}
|
|
|
|
static int confirm_prog(void)
|
|
{
|
|
puts("Warning: Programming fuses is an irreversible operation!\n"
|
|
" This may brick your system.\n"
|
|
" Use this command only if you are sure of what you are doing!\n"
|
|
"\nReally perform this fuse programming? <y/N>\n");
|
|
|
|
if (confirm_yesno())
|
|
return 1;
|
|
|
|
puts("Fuse programming aborted\n");
|
|
return 0;
|
|
}
|
|
|
|
static int do_stm32key(cmd_tbl_t *cmdtp, int flag, int argc,
|
|
char * const argv[])
|
|
{
|
|
u32 addr;
|
|
const char *op = argc >= 2 ? argv[1] : NULL;
|
|
int confirmed = argc > 3 && !strcmp(argv[2], "-y");
|
|
|
|
argc -= 2 + confirmed;
|
|
argv += 2 + confirmed;
|
|
|
|
if (argc < 1)
|
|
return CMD_RET_USAGE;
|
|
|
|
addr = simple_strtoul(argv[0], NULL, 16);
|
|
if (!addr)
|
|
return CMD_RET_USAGE;
|
|
|
|
if (!strcmp(op, "read"))
|
|
read_hash_value(addr);
|
|
|
|
if (!strcmp(op, "fuse")) {
|
|
if (!confirmed && !confirm_prog())
|
|
return CMD_RET_FAILURE;
|
|
fuse_hash_value(addr, !confirmed);
|
|
}
|
|
|
|
return CMD_RET_SUCCESS;
|
|
}
|
|
|
|
U_BOOT_CMD(stm32key, 4, 1, do_stm32key,
|
|
"Fuse ST Hash key",
|
|
"read <addr>: Read the hash store at addr in memory\n"
|
|
"stm32key fuse [-y] <addr> : Fuse hash store at addr in otp\n");
|