X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Farm%2Fmach-stm32mp%2Fbsec.c;h=80183668856e859afa3d097dd6b9a7861cb5c831;hb=ff8c23e784f57a7098e91a200ed7f5a48612b653;hp=8c5a299104d05330975827e67513199d894a804c;hpb=bfe1f08f88beacc61755bbeeb509b840c66df740;p=oweals%2Fu-boot.git

diff --git a/arch/arm/mach-stm32mp/bsec.c b/arch/arm/mach-stm32mp/bsec.c
index 8c5a299104..8018366885 100644
--- a/arch/arm/mach-stm32mp/bsec.c
+++ b/arch/arm/mach-stm32mp/bsec.c
@@ -7,9 +7,9 @@
 #include <dm.h>
 #include <misc.h>
 #include <asm/io.h>
-#include <linux/iopoll.h>
 #include <asm/arch/stm32mp1_smc.h>
 #include <linux/arm-smccc.h>
+#include <linux/iopoll.h>
 
 #define BSEC_OTP_MAX_VALUE		95
 
@@ -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);
@@ -358,12 +358,13 @@ static int stm32mp_bsec_read(struct udevice *dev, int offset,
 	bool shadow = true;
 	int nb_otp = size / sizeof(u32);
 	int otp;
+	unsigned int offs = offset;
 
-	if (offset >= STM32_BSEC_OTP_OFFSET) {
-		offset -= STM32_BSEC_OTP_OFFSET;
+	if (offs >= STM32_BSEC_OTP_OFFSET) {
+		offs -= STM32_BSEC_OTP_OFFSET;
 		shadow = false;
 	}
-	otp = offset / sizeof(u32);
+	otp = offs / sizeof(u32);
 
 	if (otp < 0 || (otp + nb_otp - 1) > BSEC_OTP_MAX_VALUE) {
 		dev_err(dev, "wrong value for otp, max value : %i\n",
@@ -393,12 +394,13 @@ static int stm32mp_bsec_write(struct udevice *dev, int offset,
 	bool shadow = true;
 	int nb_otp = size / sizeof(u32);
 	int otp;
+	unsigned int offs = offset;
 
-	if (offset >= STM32_BSEC_OTP_OFFSET) {
-		offset -= STM32_BSEC_OTP_OFFSET;
+	if (offs >= STM32_BSEC_OTP_OFFSET) {
+		offs -= STM32_BSEC_OTP_OFFSET;
 		shadow = false;
 	}
-	otp = offset / sizeof(u32);
+	otp = offs / sizeof(u32);
 
 	if (otp < 0 || (otp + nb_otp - 1) > BSEC_OTP_MAX_VALUE) {
 		dev_err(dev, "wrong value for otp, max value : %d\n",
@@ -433,6 +435,21 @@ 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 +462,7 @@ 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
 };