From 8ab216a95639ef12b618a989d8feacc857f55c1e Mon Sep 17 00:00:00 2001
From: Dmitry Yakovlev <dmitry@espressif.com>
Date: Tue, 23 Apr 2024 18:02:49 +0300
Subject: [PATCH] hw/nvram: Implement ESP32-S3 eFuse

Co-authored-by: Omar Chebib <omar.chebib@espressif.com>
---
 hw/nvram/esp32s3_efuse.c         | 49 ++++++++++++++++++++++++++++++++
 hw/nvram/meson.build             |  1 +
 include/hw/nvram/esp32s3_efuse.h | 29 +++++++++++++++++++
 3 files changed, 79 insertions(+)
 create mode 100644 hw/nvram/esp32s3_efuse.c
 create mode 100644 include/hw/nvram/esp32s3_efuse.h

diff --git a/hw/nvram/esp32s3_efuse.c b/hw/nvram/esp32s3_efuse.c
new file mode 100644
index 0000000000..df6c0c8742
--- /dev/null
+++ b/hw/nvram/esp32s3_efuse.c
@@ -0,0 +1,49 @@
+/*
+ * ESP32-S3 eFuse emulation
+ *
+ * Copyright (c) 2024 Espressif Systems (Shanghai) Co. Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 or
+ * (at your option) any later version.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/nvram/esp32s3_efuse.h"
+
+
+static void esp32s3_efuse_realize(DeviceState *dev, Error **errp)
+{
+    ESP32S3EfuseClass* esp32s3_class = ESP32S3_EFUSE_GET_CLASS(dev);
+
+    esp32s3_class->parent_realize(dev, errp);
+}
+
+
+static void esp32s3_efuse_init(Object *obj)
+{
+}
+
+static void esp32s3_efuse_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    ESP32S3EfuseClass* esp32s3_efuse = ESP32S3_EFUSE_CLASS(klass);
+
+    device_class_set_parent_realize(dc, esp32s3_efuse_realize, &esp32s3_efuse->parent_realize);
+}
+
+static const TypeInfo esp32s3_efuse_info = {
+    .name = TYPE_ESP32S3_EFUSE,
+    .parent = TYPE_ESP_EFUSE,
+    .instance_size = sizeof(ESP32S3EfuseState),
+    .instance_init = esp32s3_efuse_init,
+    .class_init = esp32s3_efuse_class_init,
+    .class_size = sizeof(ESP32S3EfuseClass)
+};
+
+static void esp32s3_efuse_register_types(void)
+{
+    type_register_static(&esp32s3_efuse_info);
+}
+
+type_init(esp32s3_efuse_register_types)
diff --git a/hw/nvram/meson.build b/hw/nvram/meson.build
index 22732f3138..24823fdc33 100644
--- a/hw/nvram/meson.build
+++ b/hw/nvram/meson.build
@@ -10,6 +10,7 @@ system_ss.add(when: 'CONFIG_NPCM7XX', if_true: files('npcm7xx_otp.c'))
 system_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_nvm.c'))
 system_ss.add(when: 'CONFIG_XTENSA_ESP32', if_true: files('esp32_efuse.c'))
 system_ss.add(when: 'CONFIG_RISCV_ESP32C3', if_true: files('esp32c3_efuse.c', 'esp_efuse.c'))
+system_ss.add(when: 'CONFIG_XTENSA_ESP32S3', if_true: files('esp32s3_efuse.c', 'esp_efuse.c'))
 system_ss.add(when: 'CONFIG_XLNX_EFUSE_CRC', if_true: files('xlnx-efuse-crc.c'))
 system_ss.add(when: 'CONFIG_XLNX_EFUSE', if_true: files('xlnx-efuse.c'))
 system_ss.add(when: 'CONFIG_XLNX_EFUSE_VERSAL', if_true: files(
diff --git a/include/hw/nvram/esp32s3_efuse.h b/include/hw/nvram/esp32s3_efuse.h
new file mode 100644
index 0000000000..8f80ef63ec
--- /dev/null
+++ b/include/hw/nvram/esp32s3_efuse.h
@@ -0,0 +1,29 @@
+/*
+ * ESP32-S3 eFuse emulation
+ *
+ * Copyright (c) 2023-2024 Espressif Systems (Shanghai) Co. Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 or
+ * (at your option) any later version.
+ */
+#pragma once
+
+#include "esp_efuse.h"
+
+#define TYPE_ESP32S3_EFUSE "nvram.esp32s3.efuse"
+#define ESP32S3_EFUSE(obj) OBJECT_CHECK(ESP32S3EfuseState, (obj), TYPE_ESP32S3_EFUSE)
+#define ESP32S3_EFUSE_GET_CLASS(obj) OBJECT_GET_CLASS(ESP32S3EfuseClass, obj, TYPE_ESP32S3_EFUSE)
+#define ESP32S3_EFUSE_CLASS(klass) OBJECT_CLASS_CHECK(ESP32S3EfuseClass, klass, TYPE_ESP32S3_EFUSE)
+
+
+typedef struct ESP32S3EfuseState {
+    ESPEfuseState parent;
+} ESP32S3EfuseState;
+
+
+typedef struct ESP32S3EfuseClass {
+    ESPEfuseClass parent_class;
+    DeviceRealize parent_realize;
+} ESP32S3EfuseClass;
+