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

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

diff --git a/arch/arm/mach-stm32mp/bsec.c b/arch/arm/mach-stm32mp/bsec.c
index 8c5a299..9ed8d8c 100644 (file)
--- a/arch/arm/mach-stm32mp/bsec.c
+++ b/arch/arm/mach-stm32mp/bsec.c
@@ -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
 };