83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/*
|
|
* 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();
|
|
}
|