Add hal board function to get/switch partition_ab

Change-Id: Ic217a5077414e9f51c79c6394cff2429cc806e55
Signed-off-by: SangYoun Kwak <sy.kwak@samsung.com>

2 files changed, 52 insertions, 3 deletions

diff --git a/hw/board/CMakeLists.txt b/hw/board/CMakeLists.txt
index de3acea..5234091 100644
--- a/hw/board/CMakeLists.txt
+++ b/hw/board/CMakeLists.txt
@@ -4,7 +4,10 @@ PROJECT(hal-backend-device-board C)
 SET(PREFIX ${CMAKE_INSTALL_PREFIX})
 
 INCLUDE(FindPkgConfig)
-pkg_check_modules(hal-backend-device-board_pkgs REQUIRED hal-backend-device-common)
+pkg_check_modules(hal-backend-device-board_pkgs REQUIRED
+	hal-backend-device-common
+	libsyscommon
+	)
 
 FOREACH(flag ${hal-backend-device-board_pkgs_CFLAGS})
 	SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} ${flag}")
diff --git a/hw/board/board.c b/hw/board/board.c
index 05525c3..061e511 100644
--- a/hw/board/board.c
+++ b/hw/board/board.c
@@ -24,9 +24,11 @@
 #include <string.h>
 
 #include </hal/include/device/hal-backend-common.h>
+#include <libsyscommon/file.h>
 
-#define SERIAL_FILE_PATH "/sys/firmware/devicetree/base/serial-number"
-#define LINE_LEN 64
+#define PARTITION_PARAM_PATH "/mnt/inform/partition-param.bin"
+#define SERIAL_FILE_PATH     "/sys/firmware/devicetree/base/serial-number"
+#define LINE_LEN             64
 
 static int get_device_serial_number(char *buffer, int len)
 {
@@ -48,6 +50,48 @@ static int get_device_serial_number(char *buffer, int len)
 	return 0;
 }
 
+static int get_current_partition(char *partition_ab)
+{
+	int ret_parse = libsys_parse_cmdline_scanf("partition_ab=%c", partition_ab);
+
+	if (ret_parse <= 0) {
+		return -ENOENT;
+	}
+
+	return 0;
+
+}
+
+static int switch_partition(char partition_ab)
+{
+	char cur_partition_ab;
+	char next_partition_ab[2];
+
+	next_partition_ab[0] = partition_ab;
+	next_partition_ab[1] = '\0';
+
+	if (partition_ab == '\0') {
+		/* Toggle partition a/b */
+		int ret_cur_part = get_current_partition(&cur_partition_ab);
+
+		if (ret_cur_part < 0) {
+			return ret_cur_part;
+		}
+
+		if (cur_partition_ab == 'a') {
+			next_partition_ab[0] = 'b';
+		} else if(cur_partition_ab == 'b') {
+			next_partition_ab[0] = 'a';
+		} else {
+			return -ENOENT;
+		}
+	} else if(partition_ab != 'a' && partition_ab != 'b') {
+		return -EINVAL;
+	}
+
+	return sys_write_buf(PARTITION_PARAM_PATH, next_partition_ab);
+}
+
 static int board_init(void **data)
 {
 	hal_backend_board_funcs *board_funcs;
@@ -57,6 +101,8 @@ static int board_init(void **data)
 		return -ENOMEM;
 
 	board_funcs->get_device_serial_number = get_device_serial_number;
+	board_funcs->get_current_partition = get_current_partition;
+	board_funcs->switch_partition = switch_partition;
 
 	*data = (void *)board_funcs;