| /* |
| * Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <esp32c3/rom/cache.h> |
| #include "soc/cache_memory.h" |
| #include "soc/extmem_reg.h" |
| #include <bootloader_flash_priv.h> |
| |
| #include <zephyr.h> |
| #include <soc.h> |
| #include <storage/flash_map.h> |
| #include <esp_log.h> |
| #include <stdlib.h> |
| |
| #ifdef CONFIG_BOOTLOADER_MCUBOOT |
| #define HDR_ATTR __attribute__((section(".entry_addr"))) __attribute__((used)) |
| |
| extern uint32_t _image_irom_start, _image_irom_size, _image_irom_vaddr; |
| extern uint32_t _image_drom_start, _image_drom_size, _image_drom_vaddr; |
| |
| void __start(void); |
| |
| static HDR_ATTR void (*_entry_point)(void) = &__start; |
| |
| static int map_rom_segments(void) |
| { |
| int rc = 0; |
| |
| size_t _partition_offset = FLASH_AREA_OFFSET(image_0); |
| uint32_t _app_irom_start = _partition_offset + (uint32_t)&_image_irom_start; |
| uint32_t _app_irom_size = (uint32_t)&_image_irom_size; |
| uint32_t _app_irom_vaddr = (uint32_t)&_image_irom_vaddr; |
| |
| uint32_t _app_drom_start = _partition_offset + (uint32_t)&_image_drom_start; |
| uint32_t _app_drom_size = (uint32_t)&_image_drom_size; |
| uint32_t _app_drom_vaddr = (uint32_t)&_image_drom_vaddr; |
| |
| uint32_t autoload = esp_rom_Cache_Suspend_ICache(); |
| |
| esp_rom_Cache_Invalidate_ICache_All(); |
| |
| /* Clear the MMU entries that are already set up, |
| * so the new app only has the mappings it creates. |
| */ |
| for (size_t i = 0; i < FLASH_MMU_TABLE_SIZE; i++) { |
| FLASH_MMU_TABLE[i] = MMU_TABLE_INVALID_VAL; |
| } |
| |
| uint32_t drom_page_count = bootloader_cache_pages_to_map(_app_drom_size, _app_drom_vaddr); |
| |
| rc |= esp_rom_Cache_Dbus_MMU_Set(MMU_ACCESS_FLASH, _app_drom_vaddr & 0xffff0000, |
| _app_drom_start & 0xffff0000, 64, drom_page_count, 0); |
| |
| uint32_t irom_page_count = bootloader_cache_pages_to_map(_app_irom_size, _app_irom_vaddr); |
| |
| rc |= esp_rom_Cache_Ibus_MMU_Set(MMU_ACCESS_FLASH, _app_irom_vaddr & 0xffff0000, |
| _app_irom_start & 0xffff0000, 64, irom_page_count, 0); |
| |
| REG_CLR_BIT(EXTMEM_ICACHE_CTRL1_REG, EXTMEM_ICACHE_SHUT_IBUS); |
| REG_CLR_BIT(EXTMEM_ICACHE_CTRL1_REG, EXTMEM_ICACHE_SHUT_DBUS); |
| |
| esp_rom_Cache_Resume_ICache(autoload); |
| |
| return rc; |
| } |
| #endif |
| |
| void __start(void) |
| { |
| #ifdef CONFIG_BOOTLOADER_MCUBOOT |
| int err = map_rom_segments(); |
| |
| if (err != 0) { |
| ets_printf("Failed to setup XIP, aborting\n"); |
| abort(); |
| } |
| #endif |
| __esp_platform_start(); |
| } |