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stm32mp: cmd_stm32key: add get_misc_dev function

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Add a helper function to access to BSEC misc driver.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Patrick Delaunay 2021-06-28 14:56:01 +02:00
parent 3da2552a22
commit e00e1f394c
1 changed files with 13 additions and 6 deletions
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19
arch/arm/mach-stm32mp/cmd_stm32key.c
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@ -14,6 +14,17 @@
#define STM32_OTP_HASH_KEY_START 24
#define STM32_OTP_HASH_KEY_SIZE 8
static int get_misc_dev(struct udevice **dev)
{
int ret;
ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stm32mp_bsec), dev);
if (ret)
log_err("Can't find stm32mp_bsec driver\n");
return ret;
}
static void read_hash_value(u32 addr)
{
int i;
@ -31,13 +42,9 @@ static int fuse_hash_value(u32 addr, bool print)
u32 word, val;
int i, ret;
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stm32mp_bsec),
&dev);
if (ret) {
log_err("Can't find stm32mp_bsec driver\n");
ret = get_misc_dev(&dev);
if (ret)
return ret;
}
for (i = 0, word = STM32_OTP_HASH_KEY_START;
i < STM32_OTP_HASH_KEY_SIZE;