From 6eceeee95b870a595fb86e6047e618254e7bbc90 Mon Sep 17 00:00:00 2001
From: Dmitry Yakovlev <dmitry@espressif.com>
Date: Tue, 23 Apr 2024 17:55:58 +0300
Subject: [PATCH] hw/misc: Implement ESP32-S3 SHA

Co-authored-by: Harshal Patil <harshal.patil@espressif.com>
---
 hw/misc/esp32s3_sha.c         | 33 +++++++++++++++++++++++++++++++++
 hw/misc/meson.build           |  2 ++
 include/hw/misc/esp32s3_sha.h | 35 +++++++++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+)
 create mode 100644 hw/misc/esp32s3_sha.c
 create mode 100644 include/hw/misc/esp32s3_sha.h

diff --git a/hw/misc/esp32s3_sha.c b/hw/misc/esp32s3_sha.c
new file mode 100644
index 0000000000..f187465d6d
--- /dev/null
+++ b/hw/misc/esp32s3_sha.c
@@ -0,0 +1,33 @@
+/*
+ * ESP32S3 SHA accelerator
+ *
+ * Copyright (c) 2019 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/misc/esp32s3_sha.h"
+
+static void esp32s3_sha_class_init(ObjectClass *klass, void *data)
+{
+    ESPShaClass* class = ESP_SHA_CLASS(klass);
+    class->message_len = ESP32S3_SHA_MESSAGE_SIZE;
+    class->date = ESP32S3_SHA_DATE_REG_VALUE;
+}
+
+static const TypeInfo esp32s3_sha_info = {
+    .name = TYPE_ESP32S3_SHA,
+    .parent = TYPE_ESP_SHA,
+    .instance_size = sizeof(ESP32S3ShaState),
+    .class_init = esp32s3_sha_class_init,
+    .class_size = sizeof(ESP32S3ShaClass)
+};
+
+static void esp32s3_sha_register_types(void)
+{
+    type_register_static(&esp32s3_sha_info);
+}
+
+type_init(esp32s3_sha_register_types)
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index b92d4c0afe..92ffb04320 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -161,6 +161,8 @@ system_ss.add(when: 'CONFIG_RISCV_ESP32C3', if_true: files(
 system_ss.add(when: 'CONFIG_XTENSA_ESP32S3', if_true: files(
   'esp32s3_cache.c',
   'ssi_psram.c',
+  'esp_sha.c',
+  'esp32s3_sha.c',
 ))
 
 if gcrypt.found()
diff --git a/include/hw/misc/esp32s3_sha.h b/include/hw/misc/esp32s3_sha.h
new file mode 100644
index 0000000000..bfea23ab87
--- /dev/null
+++ b/include/hw/misc/esp32s3_sha.h
@@ -0,0 +1,35 @@
+/*
+ * ESP32S3 SHA accelerator
+ *
+ * Copyright (c) 2019 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 "hw/misc/esp_sha.h"
+
+#define TYPE_ESP32S3_SHA "misc.esp32s3.sha"
+#define ESP32S3_SHA(obj) OBJECT_CHECK(ESP32S3ShaState, (obj), TYPE_ESP32S3_SHA)
+
+#define ESP32S3_SHA_GET_CLASS(obj) OBJECT_GET_CLASS(ESP32S3ShaClass, obj, TYPE_ESP32S3_SHA)
+#define ESP32S3_SHA_CLASS(klass) OBJECT_CLASS_CHECK(ESP32S3ShaClass, klass, TYPE_ESP32S3_SHA)
+
+/**
+ * @brief Size of the message array, in bytes
+ */
+#define ESP32S3_SHA_MESSAGE_SIZE    128
+#define ESP32S3_SHA_MESSAGE_WORDS   (ESP32S3_SHA_MESSAGE_SIZE / sizeof(uint32_t))
+
+#define ESP32S3_SHA_DATE_REG_VALUE    0x20190402
+
+typedef struct ESP32S3ShaState {
+    ESPShaState parent;
+} ESP32S3ShaState;
+
+typedef struct ESP32S3ShaClass {
+    ESPShaClass parent_class;
+} ESP32S3ShaClass;