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bootloader: add API for erasing flash region

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Signed-off-by: Mahavir Jain <mahavir@espressif.com>
This commit is contained in:
Mahavir Jain
2018-08-24 17:58:04 +05:30
committed by bot
parent 4a987dacca
commit 62746e414e
3 changed files with 43 additions and 3 deletions
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29
components/bootloader_support/src/bootloader_flash.c
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@@ -73,6 +73,11 @@ esp_err_t bootloader_flash_erase_sector(size_t sector)
return spi_flash_erase_sector(sector);
}
esp_err_t bootloader_flash_erase_range(uint32_t start_addr, uint32_t size)
{
return spi_flash_erase_range(start_addr, size);
}
#else
/* Bootloader version, uses ROM functions only */
#include <soc/dport_reg.h>
@@ -247,4 +252,28 @@ esp_err_t bootloader_flash_erase_sector(size_t sector)
return spi_to_esp_err(esp_rom_spiflash_erase_sector(sector));
}
esp_err_t bootloader_flash_erase_range(uint32_t start_addr, uint32_t size)
{
if (start_addr % FLASH_SECTOR_SIZE != 0) {
return ESP_ERR_INVALID_ARG;
}
if (size % FLASH_SECTOR_SIZE != 0) {
return ESP_ERR_INVALID_SIZE;
}
size_t start = start_addr / FLASH_SECTOR_SIZE;
size_t end = start + size / FLASH_SECTOR_SIZE;
const size_t sectors_per_block = FLASH_BLOCK_SIZE / FLASH_SECTOR_SIZE;
esp_rom_spiflash_result_t rc = ESP_ROM_SPIFLASH_RESULT_OK;
for (size_t sector = start; sector != end && rc == ESP_ROM_SPIFLASH_RESULT_OK; ) {
if (sector % sectors_per_block == 0 && end - sector >= sectors_per_block) {
rc = esp_rom_spiflash_erase_block(sector / sectors_per_block);
sector += sectors_per_block;
} else {
rc = esp_rom_spiflash_erase_sector(sector);
++sector;
}
}
return spi_to_esp_err(rc);
}
#endif