spi_flash: fix the corruption of ROM after calling bootloader_execute_flash_command

The user register, especially dummy related ones, needs to be restored, otherwise the ROM function will not work.

Introduced in dd40123129.
pull/7856/head
Michael (XIAO Xufeng) 2021-08-18 23:55:39 +08:00
rodzic e00f6cbde9
commit d4fd54f8ce
1 zmienionych plików z 4 dodań i 0 usunięć

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@ -549,6 +549,8 @@ IRAM_ATTR static uint32_t bootloader_flash_execute_command_common(
assert(mosi_len <= 32);
assert(miso_len <= 32);
uint32_t old_ctrl_reg = SPIFLASH.ctrl.val;
uint32_t old_user_reg = SPIFLASH.user.val;
uint32_t old_user1_reg = SPIFLASH.user1.val;
#if CONFIG_IDF_TARGET_ESP32
SPIFLASH.ctrl.val = SPI_WP_REG_M; // keep WP high while idle, otherwise leave DIO mode
#else
@ -595,6 +597,8 @@ IRAM_ATTR static uint32_t bootloader_flash_execute_command_common(
while (SPIFLASH.cmd.usr != 0) {
}
SPIFLASH.ctrl.val = old_ctrl_reg;
SPIFLASH.user.val = old_user_reg;
SPIFLASH.user1.val = old_user1_reg;
uint32_t ret = SPIFLASH.data_buf[0];
if (miso_len < 32) {