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spi_flash(LEGACY_IMPL): Add a Kconfig option - Bypass a block erase and always do sector erase

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Closes: IDF-1561
This commit is contained in:
KonstantinKondrashov 2020-04-24 02:09:15 +08:00
parent b56c7d9066
commit 5c98ff015e
2 changed files with 12 additions and 1 deletions
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8
components/spi_flash/Kconfig
View File

@ -84,6 +84,14 @@ menu "SPI Flash driver"
The implementation of SPI flash has been greatly changed in IDF v4.0.
Enable this option to use the legacy implementation.
config SPI_FLASH_BYPASS_BLOCK_ERASE
bool "Bypass a block erase and always do sector erase"
default n
help
Some flash chips can have very high "max" erase times, especially for block erase (32KB or 64KB).
This option allows to bypass "block erase" and always do sector erase commands.
This will be much slower overall in most cases, but improves latency for other code to run.
config SPI_FLASH_YIELD_DURING_ERASE
bool "Enables yield operation during flash erase"
default y

5
components/spi_flash/flash_ops.c
View File

@ -244,11 +244,14 @@ esp_err_t IRAM_ATTR spi_flash_erase_range(size_t start_addr, size_t size)
int64_t start_time_us = esp_timer_get_time();
#endif
spi_flash_guard_start();
#ifndef CONFIG_SPI_FLASH_BYPASS_BLOCK_ERASE
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;
COUNTER_ADD_BYTES(erase, sectors_per_block * SPI_FLASH_SEC_SIZE);
} else {
} else
#endif
{
rc = esp_rom_spiflash_erase_sector(sector);
++sector;
COUNTER_ADD_BYTES(erase, SPI_FLASH_SEC_SIZE);