Add basic UART drivers
Add basic drivers for:
- PL011 UART
- CMSDK APB UART
- dummy/stub UART
Change-Id: I2f89874fba59044e6c7c084f8e1dc6faa9eb8d1b
diff --git a/drivers/uart/CMakeLists.txt b/drivers/uart/CMakeLists.txt
new file mode 100644
index 0000000..1293bdc
--- /dev/null
+++ b/drivers/uart/CMakeLists.txt
@@ -0,0 +1,41 @@
+#
+# Copyright (c) 2019-2020 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_uart_common INTERFACE)
+
+target_include_directories(ethosu_uart_common INTERFACE
+ include
+ ${CMAKE_CURRENT_BINARY_DIR})
+
+# UART configuration (can be overriden from user project)
+set(UART0_BASE "0xFFFFFFFF" CACHE STRING "UART base address")
+set(UART0_BAUDRATE "115200" CACHE STRING "UART baudrate")
+set(SYSTEM_CORE_CLOCK "25000000" CACHE STRING "System core clock (Hz)")
+
+# Generate UART configuration file
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/uart_config.h.in" "${CMAKE_CURRENT_BINARY_DIR}/uart_config.h")
+
+# Drivers
+add_library(ethosu_uart_cmsdk_apb STATIC src/uart_cmsdk_apb.c)
+target_link_libraries(ethosu_uart_cmsdk_apb PUBLIC ethosu_uart_common)
+
+add_library(ethosu_uart_pl011 STATIC src/uart_pl011.c)
+target_link_libraries(ethosu_uart_pl011 PUBLIC ethosu_uart_common)
+
+add_library(ethosu_uart_dummy STATIC src/uart_dummy.c)
+target_link_libraries(ethosu_uart_dummy PUBLIC ethosu_uart_common)