boot/espressif: Add CMakeLists.txt and mcuboot_config.h
Add sources and headers required for build
Signed-off-by: Shubham Kulkarni <shubham.kulkarni@espressif.com>
diff --git a/boot/espressif/port/esp_mcuboot.c b/boot/espressif/port/esp_mcuboot.c
new file mode 100644
index 0000000..828fc9e
--- /dev/null
+++ b/boot/espressif/port/esp_mcuboot.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright (c) 2021 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "mcuboot_config/mcuboot_logging.h"
+#include "flash_map_backend/flash_map_backend.h"
+#include "sysflash/sysflash.h"
+#include "bootutil/bootutil.h"
+
+#define ARRAY_SIZE(arr) sizeof(arr)/sizeof(arr[0])
+
+#define BOOTLOADER_START_ADDRESS 0x1000
+#define BOOTLOADER_SIZE CONFIG_ESP_BOOTLOADER_SIZE
+#define APPLICATION_PRIMARY_START_ADDRESS CONFIG_ESP_APPLICATION_PRIMARY_START_ADDRESS
+#define APPLICATION_SECONDARY_START_ADDRESS CONFIG_ESP_APPLICATION_SECONDARY_START_ADDRESS
+#define APPLICATION_SIZE CONFIG_ESP_APPLICATION_SIZE
+#define SCRATCH_OFFSET CONFIG_ESP_SCRATCH_OFFSET
+#define SCRATCH_SIZE CONFIG_ESP_SCRATCH_SIZE
+
+#define FLASH_SECTOR_SIZE 4096
+
+extern int ets_printf(const char *fmt, ...);
+
+static const struct flash_area bootloader = {
+ .fa_id = FLASH_AREA_BOOTLOADER,
+ .fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
+ .fa_off = BOOTLOADER_START_ADDRESS,
+ .fa_size = BOOTLOADER_SIZE,
+};
+
+static const struct flash_area primary_img0 = {
+ .fa_id = FLASH_AREA_IMAGE_PRIMARY(0),
+ .fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
+ .fa_off = APPLICATION_PRIMARY_START_ADDRESS,
+ .fa_size = APPLICATION_SIZE,
+};
+
+static const struct flash_area secondary_img0 = {
+ .fa_id = FLASH_AREA_IMAGE_SECONDARY(0),
+ .fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
+ .fa_off = APPLICATION_SECONDARY_START_ADDRESS,
+ .fa_size = APPLICATION_SIZE,
+};
+
+static const struct flash_area scratch_img0 = {
+ .fa_id = FLASH_AREA_IMAGE_SCRATCH,
+ .fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
+ .fa_off = SCRATCH_OFFSET,
+ .fa_size = SCRATCH_SIZE,
+};
+
+static const struct flash_area *s_flash_areas[] = {
+ &bootloader,
+ &primary_img0,
+ &secondary_img0,
+ &scratch_img0,
+};
+
+static const struct flash_area *prv_lookup_flash_area(uint8_t id) {
+ for (size_t i = 0; i < ARRAY_SIZE(s_flash_areas); i++) {
+ const struct flash_area *area = s_flash_areas[i];
+ if (id == area->fa_id) {
+ return area;
+ }
+ }
+ return NULL;
+}
+
+int flash_area_open(uint8_t id, const struct flash_area **area_outp)
+{
+ MCUBOOT_LOG_DBG("%s: ID=%d", __func__, (int)id);
+ const struct flash_area *area = prv_lookup_flash_area(id);
+ *area_outp = area;
+ return area != NULL ? 0 : -1;
+}
+
+void flash_area_close(const struct flash_area *area)
+{
+
+}
+
+int flash_area_read(const struct flash_area *fa, uint32_t off, void *dst,
+ uint32_t len)
+{
+ if (fa->fa_device_id != FLASH_DEVICE_INTERNAL_FLASH) {
+ return -1;
+ }
+
+ const uint32_t end_offset = off + len;
+ if (end_offset > fa->fa_size) {
+ MCUBOOT_LOG_ERR("%s: Out of Bounds (0x%x vs 0x%x)", __func__, end_offset, fa->fa_size);
+ return -1;
+ }
+
+ return 0;
+}
+
+int flash_area_write(const struct flash_area *fa, uint32_t off, const void *src,
+ uint32_t len)
+{
+ if (fa->fa_device_id != FLASH_DEVICE_INTERNAL_FLASH) {
+ return -1;
+ }
+
+ const uint32_t end_offset = off + len;
+ if (end_offset > fa->fa_size) {
+ MCUBOOT_LOG_ERR("%s: Out of Bounds (0x%x vs 0x%x)", __func__, end_offset, fa->fa_size);
+ return -1;
+ }
+
+ const uint32_t addr = fa->fa_off + off;
+ MCUBOOT_LOG_DBG("%s: Addr: 0x%08x Length: %d", __func__, (int)addr, (int)len);
+
+#if VALIDATE_PROGRAM_OP
+ if (memcmp((void *)addr, src, len) != 0) {
+ MCUBOOT_LOG_ERR("%s: Program Failed", __func__);
+ assert(0);
+ }
+#endif
+
+ return 0;
+}
+
+int flash_area_erase(const struct flash_area *fa, uint32_t off, uint32_t len)
+{
+ if (fa->fa_device_id != FLASH_DEVICE_INTERNAL_FLASH) {
+ return -1;
+ }
+
+ if ((len % FLASH_SECTOR_SIZE) != 0 || (off % FLASH_SECTOR_SIZE) != 0) {
+ MCUBOOT_LOG_ERR("%s: Not aligned on sector Offset: 0x%x Length: 0x%x", __func__,
+ (int)off, (int)len);
+ return -1;
+ }
+
+ const uint32_t start_addr = fa->fa_off + off;
+ MCUBOOT_LOG_DBG("%s: Addr: 0x%08x Length: %d", __func__, (int)start_addr, (int)len);
+
+#if VALIDATE_PROGRAM_OP
+ for (size_t i = 0; i < len; i++) {
+ uint8_t *val = (void *)(start_addr + i);
+ if (*val != 0xff) {
+ MCUBOOT_LOG_ERR("%s: Erase at 0x%x Failed", __func__, (int)val);
+ assert(0);
+ }
+ }
+#endif
+
+ return 0;
+}
+
+size_t flash_area_align(const struct flash_area *area)
+{
+ return 4;
+}
+
+uint8_t flash_area_erased_val(const struct flash_area *area)
+{
+ return 0xff;
+}
+
+int flash_area_get_sectors(int fa_id, uint32_t *count,
+ struct flash_sector *sectors)
+{
+ const struct flash_area *fa = prv_lookup_flash_area(fa_id);
+ if (fa->fa_device_id != FLASH_DEVICE_INTERNAL_FLASH) {
+ return -1;
+ }
+
+ const size_t sector_size = FLASH_SECTOR_SIZE;
+ uint32_t total_count = 0;
+ for (size_t off = 0; off < fa->fa_size; off += sector_size) {
+ // Note: Offset here is relative to flash area, not device
+ sectors[total_count].fs_off = off;
+ sectors[total_count].fs_size = sector_size;
+ total_count++;
+ }
+
+ *count = total_count;
+ return 0;
+}
+
+int flash_area_id_from_multi_image_slot(int image_index, int slot)
+{
+ MCUBOOT_LOG_DBG("%s", __func__);
+ switch (slot) {
+ case 0:
+ return FLASH_AREA_IMAGE_PRIMARY(image_index);
+ case 1:
+ return FLASH_AREA_IMAGE_SECONDARY(image_index);
+ }
+
+ MCUBOOT_LOG_ERR("Unexpected Request: image_index=%d, slot=%d", image_index, slot);
+ return -1; /* flash_area_open will fail on that */
+}
+
+int flash_area_id_from_image_slot(int slot)
+{
+ return flash_area_id_from_multi_image_slot(0, slot);
+}
+
+int flash_area_to_sectors(int idx, int *cnt, struct flash_area *fa)
+{
+ return -1;
+}
+
+void mcuboot_assert_handler(const char *file, int line, const char *func)
+{
+ ets_printf("assertion failed: file \"%s\", line %d, func: %s\n", file, line, func);
+ abort();
+}