Build: Make possible to overwrite BL2 sources
This commit introduces two cmake flags to let a platform overwrite BL2
related implementations created by the TF-M project.
- Setting DEFAULT_MCUBOOT_FLASH_MAP to OFF makes possible for a
platform to create custom flash map.
- Setting DEFAULT_MCUBOOT_SECURITY_COUNTER to OFF makes possible for a
platform to use custom security counter mapping.
Change-Id: Ib1955e63e78dd5a5a7dff67a49dab1d5d1a06fc1
Signed-off-by: Mark Horvath <mark.horvath@arm.com>
Signed-off-by: Satish Kumar <satish.kumar01@arm.com>
diff --git a/bl2/src/default_flash_map.c b/bl2/src/default_flash_map.c
new file mode 100644
index 0000000..4c8fcde
--- /dev/null
+++ b/bl2/src/default_flash_map.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#include <stdbool.h>
+#include "flash_map/flash_map.h"
+#include "target.h"
+#include "Driver_Flash.h"
+
+/* When undefined FLASH_DEV_NAME_0 or FLASH_DEVICE_ID_0 , default */
+#if !defined(FLASH_DEV_NAME_0) || !defined(FLASH_DEVICE_ID_0)
+#define FLASH_DEV_NAME_0 FLASH_DEV_NAME
+#define FLASH_DEVICE_ID_0 FLASH_DEVICE_ID
+#endif
+
+/* When undefined FLASH_DEV_NAME_1 or FLASH_DEVICE_ID_1 , default */
+#if !defined(FLASH_DEV_NAME_1) || !defined(FLASH_DEVICE_ID_1)
+#define FLASH_DEV_NAME_1 FLASH_DEV_NAME
+#define FLASH_DEVICE_ID_1 FLASH_DEVICE_ID
+#endif
+
+/* When undefined FLASH_DEV_NAME_2 or FLASH_DEVICE_ID_2 , default */
+#if !defined(FLASH_DEV_NAME_2) || !defined(FLASH_DEVICE_ID_2)
+#define FLASH_DEV_NAME_2 FLASH_DEV_NAME
+#define FLASH_DEVICE_ID_2 FLASH_DEVICE_ID
+#endif
+
+/* When undefined FLASH_DEV_NAME_3 or FLASH_DEVICE_ID_3 , default */
+#if !defined(FLASH_DEV_NAME_3) || !defined(FLASH_DEVICE_ID_3)
+#define FLASH_DEV_NAME_3 FLASH_DEV_NAME
+#define FLASH_DEVICE_ID_3 FLASH_DEVICE_ID
+#endif
+
+/* When undefined FLASH_DEV_NAME_SCRATCH or FLASH_DEVICE_ID_SCRATCH , default */
+#if !defined(FLASH_DEV_NAME_SCRATCH) || !defined(FLASH_DEVICE_ID_SCRATCH)
+#define FLASH_DEV_NAME_SCRATCH FLASH_DEV_NAME
+#define FLASH_DEVICE_ID_SCRATCH FLASH_DEVICE_ID
+#endif
+
+#define ARRAY_SIZE(arr) (sizeof(arr)/sizeof((arr)[0]))
+
+/* Flash device names must be specified by target */
+extern ARM_DRIVER_FLASH FLASH_DEV_NAME_0;
+extern ARM_DRIVER_FLASH FLASH_DEV_NAME_1;
+extern ARM_DRIVER_FLASH FLASH_DEV_NAME_2;
+extern ARM_DRIVER_FLASH FLASH_DEV_NAME_3;
+extern ARM_DRIVER_FLASH FLASH_DEV_NAME_SCRATCH;
+
+const struct flash_area flash_map[] = {
+ {
+ .fa_id = FLASH_AREA_0_ID,
+ .fa_device_id = FLASH_DEVICE_ID_0,
+ .fa_driver = &FLASH_DEV_NAME_0,
+ .fa_off = FLASH_AREA_0_OFFSET,
+ .fa_size = FLASH_AREA_0_SIZE,
+ },
+ {
+ .fa_id = FLASH_AREA_2_ID,
+ .fa_device_id = FLASH_DEVICE_ID_2,
+ .fa_driver = &FLASH_DEV_NAME_2,
+ .fa_off = FLASH_AREA_2_OFFSET,
+ .fa_size = FLASH_AREA_2_SIZE,
+ },
+#if (MCUBOOT_IMAGE_NUMBER == 2)
+ {
+ .fa_id = FLASH_AREA_1_ID,
+ .fa_device_id = FLASH_DEVICE_ID_1,
+ .fa_driver = &FLASH_DEV_NAME_1,
+ .fa_off = FLASH_AREA_1_OFFSET,
+ .fa_size = FLASH_AREA_1_SIZE,
+ },
+ {
+ .fa_id = FLASH_AREA_3_ID,
+ .fa_device_id = FLASH_DEVICE_ID_3,
+ .fa_driver = &FLASH_DEV_NAME_3,
+ .fa_off = FLASH_AREA_3_OFFSET,
+ .fa_size = FLASH_AREA_3_SIZE,
+ },
+#endif
+ {
+ .fa_id = FLASH_AREA_SCRATCH_ID,
+ .fa_device_id = FLASH_DEVICE_ID_SCRATCH,
+ .fa_driver = &FLASH_DEV_NAME_SCRATCH,
+ .fa_off = FLASH_AREA_SCRATCH_OFFSET,
+ .fa_size = FLASH_AREA_SCRATCH_SIZE,
+ },
+};
+
+const int flash_map_entry_num = ARRAY_SIZE(flash_map);