Add mpu driver and remove interface library
from drivers
Add mpu driver for upstreaming
After removing of interface library,targets and applications
will list explicitly which libraries to link
Change-Id: Icfa449a2981093161f283e45b4d52ca6199371b8
diff --git a/drivers/mhu_juno/CMakeLists.txt b/drivers/mhu_juno/CMakeLists.txt
new file mode 100644
index 0000000..2116ee7
--- /dev/null
+++ b/drivers/mhu_juno/CMakeLists.txt
@@ -0,0 +1,23 @@
+#
+# Copyright (c) 2020-2021 Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the License); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an AS IS BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+add_library(ethosu_mhu_juno STATIC)
+target_include_directories(ethosu_mhu_juno PUBLIC include)
+
+target_sources(ethosu_mhu_juno PRIVATE src/mhu_juno.cpp)
+target_link_libraries(ethosu_mhu_juno PRIVATE ethosu_mailbox)
diff --git a/drivers/mhu_juno/include/mhu_juno.hpp b/drivers/mhu_juno/include/mhu_juno.hpp
new file mode 100644
index 0000000..6b36512
--- /dev/null
+++ b/drivers/mhu_juno/include/mhu_juno.hpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2020-2021 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MHU_JUNO_HPP
+#define MHU_JUNO_HPP
+
+#include <mailbox.hpp>
+
+#include <cstddef>
+#include <cstdint>
+
+namespace Mailbox {
+
+// Doorbell implementation only
+class MHUJuno : public Mailbox {
+public:
+ MHUJuno(const uint32_t baseAddress);
+ virtual ~MHUJuno();
+ virtual bool sendMessage() final;
+ virtual void handleMessage() final;
+ virtual bool verifyHardware() final;
+
+private:
+ /* Offsets */
+ static constexpr uint32_t CPU0_INTR_STAT = 0x00;
+ static constexpr uint32_t CPU0_INTR_SET = 0x04;
+ static constexpr uint32_t CPU0_INTR_CLR = 0x08;
+ static constexpr uint32_t CPU1_INTR_STAT = 0x10;
+ static constexpr uint32_t CPU1_INTR_SET = 0x14;
+ static constexpr uint32_t CPU1_INTR_CLR = 0x18;
+ static constexpr uint32_t OFFSET = 0x10;
+ static constexpr uint32_t PIDR0 = 0xfe0;
+ static constexpr uint32_t PIDR1 = 0xfe4;
+ static constexpr uint32_t PIDR2 = 0xfe8;
+ static constexpr uint32_t PIDR3 = 0xfec;
+ static constexpr uint32_t PIDR4 = 0xfd0;
+ static constexpr uint32_t CIDR0 = 0xff0;
+ static constexpr uint32_t CIDR1 = 0xff4;
+ static constexpr uint32_t CIDR2 = 0xff8;
+ static constexpr uint32_t CIDR3 = 0xffc;
+
+ volatile uint32_t *baseAddr;
+
+ void clearMessage();
+ void write(uint32_t offset, uint32_t val);
+ uint32_t read(uint32_t offset);
+};
+
+} // namespace Mailbox
+
+#endif /* #ifndef MHU_JUNO_HPP */
diff --git a/drivers/mhu_juno/src/mhu_juno.cpp b/drivers/mhu_juno/src/mhu_juno.cpp
new file mode 100644
index 0000000..04b1352
--- /dev/null
+++ b/drivers/mhu_juno/src/mhu_juno.cpp
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2020-2021 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <mhu_juno.hpp>
+
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstring>
+
+namespace Mailbox {
+
+MHUJuno::MHUJuno(const uint32_t baseAddress) {
+ baseAddr = reinterpret_cast<volatile uint32_t *>(baseAddress);
+}
+
+void MHUJuno::handleMessage() {
+ clearMessage();
+ notify();
+}
+
+MHUJuno::~MHUJuno() {}
+
+// Doorbell only
+bool MHUJuno::sendMessage() {
+ write(CPU1_INTR_SET, 1);
+ return true;
+}
+// Doorbell only
+void MHUJuno::clearMessage() {
+ write(CPU0_INTR_CLR, 0xF);
+}
+
+bool MHUJuno::verifyHardware() {
+ uint32_t pidr0 = read(PIDR0);
+ uint32_t pidr1 = read(PIDR1);
+ uint32_t pidr2 = read(PIDR2);
+ uint32_t pidr3 = read(PIDR3);
+ uint32_t pidr4 = read(PIDR4);
+ uint32_t cidr0 = read(CIDR0);
+ uint32_t cidr1 = read(CIDR1);
+ uint32_t cidr2 = read(CIDR2);
+ uint32_t cidr3 = read(CIDR3);
+
+ if (pidr0 != 0x56 || pidr1 != 0xb8 || pidr2 != 0x0b || pidr3 != 0x00 || pidr4 != 0x04 || cidr0 != 0x0d ||
+ cidr1 != 0xf0 || cidr2 != 0x05 || cidr3 != 0xb1) {
+ return false;
+ }
+ return true;
+}
+
+void MHUJuno::write(const uint32_t offset, const uint32_t value) {
+ write32(baseAddr, offset, value);
+}
+
+uint32_t MHUJuno::read(const uint32_t offset) {
+ return read32(baseAddr, offset);
+}
+
+} // namespace Mailbox