From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
 roms/u-boot/drivers/misc/stm32mp_fuse.c | 197 ++++++++++++++++++++++++++++++++
 1 file changed, 197 insertions(+)
 create mode 100644 roms/u-boot/drivers/misc/stm32mp_fuse.c

(limited to 'roms/u-boot/drivers/misc/stm32mp_fuse.c')

diff --git a/roms/u-boot/drivers/misc/stm32mp_fuse.c b/roms/u-boot/drivers/misc/stm32mp_fuse.c
new file mode 100644
index 000000000..9fd6c367d
--- /dev/null
+++ b/roms/u-boot/drivers/misc/stm32mp_fuse.c
@@ -0,0 +1,197 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ */
+
+#include <common.h>
+#include <command.h>
+#include <fuse.h>
+#include <misc.h>
+#include <errno.h>
+#include <dm/device.h>
+#include <dm/uclass.h>
+#include <power/stpmic1.h>
+
+#define STM32MP_OTP_BANK	0
+#define STM32MP_NVM_BANK	1
+
+/*
+ * The 'fuse' command API
+ */
+int fuse_read(u32 bank, u32 word, u32 *val)
+{
+	int ret;
+	struct udevice *dev;
+
+	switch (bank) {
+	case STM32MP_OTP_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_DRIVER_GET(stm32mp_bsec),
+						  &dev);
+		if (ret)
+			return ret;
+		ret = misc_read(dev, word * 4 + STM32_BSEC_SHADOW_OFFSET,
+				val, 4);
+		if (ret != 4)
+			ret = -EINVAL;
+		else
+			ret = 0;
+		break;
+
+#ifdef CONFIG_PMIC_STPMIC1
+	case STM32MP_NVM_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_DRIVER_GET(stpmic1_nvm),
+						  &dev);
+		if (ret)
+			return ret;
+		*val = 0;
+		ret = misc_read(dev, -word, val, 1);
+		if (ret != 1)
+			ret = -EINVAL;
+		else
+			ret = 0;
+		break;
+#endif /* CONFIG_PMIC_STPMIC1 */
+
+	default:
+		printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+int fuse_prog(u32 bank, u32 word, u32 val)
+{
+	struct udevice *dev;
+	int ret;
+
+	switch (bank) {
+	case STM32MP_OTP_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_DRIVER_GET(stm32mp_bsec),
+						  &dev);
+		if (ret)
+			return ret;
+		ret = misc_write(dev, word * 4 + STM32_BSEC_OTP_OFFSET,
+				 &val, 4);
+		if (ret != 4)
+			ret = -EINVAL;
+		else
+			ret = 0;
+		break;
+
+#ifdef CONFIG_PMIC_STPMIC1
+	case STM32MP_NVM_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_DRIVER_GET(stpmic1_nvm),
+						  &dev);
+		if (ret)
+			return ret;
+		ret = misc_write(dev, word, &val, 1);
+		if (ret != 1)
+			ret = -EINVAL;
+		else
+			ret = 0;
+		break;
+#endif /* CONFIG_PMIC_STPMIC1 */
+
+	default:
+		printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+int fuse_sense(u32 bank, u32 word, u32 *val)
+{
+	struct udevice *dev;
+	int ret;
+
+	switch (bank) {
+	case STM32MP_OTP_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_DRIVER_GET(stm32mp_bsec),
+						  &dev);
+		if (ret)
+			return ret;
+		ret = misc_read(dev, word * 4 + STM32_BSEC_OTP_OFFSET, val, 4);
+		if (ret != 4)
+			ret = -EINVAL;
+		else
+			ret = 0;
+		break;
+
+#ifdef CONFIG_PMIC_STPMIC1
+	case STM32MP_NVM_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_DRIVER_GET(stpmic1_nvm),
+						  &dev);
+		if (ret)
+			return ret;
+		*val = 0;
+		ret = misc_read(dev, word, val, 1);
+		if (ret != 1)
+			ret = -EINVAL;
+		else
+			ret = 0;
+		break;
+#endif /* CONFIG_PMIC_STPMIC1 */
+
+	default:
+		printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+int fuse_override(u32 bank, u32 word, u32 val)
+{
+	struct udevice *dev;
+	int ret;
+
+	switch (bank) {
+	case STM32MP_OTP_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_DRIVER_GET(stm32mp_bsec),
+						  &dev);
+		if (ret)
+			return ret;
+		ret = misc_write(dev, word * 4 + STM32_BSEC_SHADOW_OFFSET,
+				 &val, 4);
+		if (ret != 4)
+			ret = -EINVAL;
+		else
+			ret = 0;
+		break;
+
+#ifdef CONFIG_PMIC_STPMIC1
+	case STM32MP_NVM_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_DRIVER_GET(stpmic1_nvm),
+						  &dev);
+		if (ret)
+			return ret;
+		ret = misc_write(dev, -word, &val, 1);
+		if (ret != 1)
+			ret = -EINVAL;
+		else
+			ret = 0;
+		break;
+#endif /* CONFIG_PMIC_STPMIC1 */
+
+	default:
+		printf("stm32mp %s: wrong value for bank %i\n",
+		       __func__, bank);
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
-- 
cgit