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stm32mp1: bsec: shadow all the upper OTP (no secure) during boot

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Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2019-02-27 17:01:28 +01:00
parent bfe1f08f88
commit 815bc8bc94
1 changed files with 19 additions and 1 deletions
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20
arch/arm/mach-stm32mp/bsec.c
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@ -171,7 +171,7 @@ static int bsec_shadow_register(u32 base, u32 otp)
ret = bsec_power_safmem(base, true);
if (ret)
return ret;
power_up = 1;
power_up = true;
}
/* set BSEC_OTP_CTRL_OFF with the otp value*/
writel(otp | BSEC_READ, base + BSEC_OTP_CTRL_OFF);
@ -433,6 +433,21 @@ static int stm32mp_bsec_ofdata_to_platdata(struct udevice *dev)
return 0;
}
#ifndef CONFIG_STM32MP1_TRUSTED
static int stm32mp_bsec_probe(struct udevice *dev)
{
int otp;
struct stm32mp_bsec_platdata *plat = dev_get_platdata(dev);
/* update unlocked shadow for OTP cleared by the rom code */
for (otp = 57; otp <= BSEC_OTP_MAX_VALUE; otp++)
if (!bsec_read_SR_lock(plat->base, otp))
bsec_shadow_register(plat->base, otp);
return 0;
}
#endif
static const struct udevice_id stm32mp_bsec_ids[] = {
{ .compatible = "st,stm32mp15-bsec" },
{}
@ -445,4 +460,7 @@ U_BOOT_DRIVER(stm32mp_bsec) = {
.ofdata_to_platdata = stm32mp_bsec_ofdata_to_platdata,
.platdata_auto_alloc_size = sizeof(struct stm32mp_bsec_platdata),
.ops = &stm32mp_bsec_ops,
#ifndef CONFIG_STM32MP1_TRUSTED
.probe = stm32mp_bsec_probe,
#endif
};