esp32c3: Switched out the custom Flash erase implementation for the o…

…ne in spi.c w/ a small modification

src/target/esp32c3.c

@@ -125,6 +125,7 @@
 typedef struct esp32c3_priv {
 	uint32_t wdt_config[4];
 	target_addr_t last_invalidated_sector;
+	flash_erase_func spi_flash_erase;
 } esp32c3_priv_s;
 
 static void esp32c3_disable_wdts(target_s *target);
@@ -205,6 +206,8 @@ bool esp32c3_probe(target_s *const target)
 		/* Adjust the resulting capacity to not exceed the available memory mapping window size */
 		flash->flash.length = MIN(flash->flash.length, ESP32_C3_IBUS_FLASH_SIZE);
 		/* Adjust over to our slightly modified versions of the Flash routines */
+		esp32c3_priv_s *const priv = (esp32c3_priv_s *)target->target_storage;
+		priv->spi_flash_erase = flash->flash.erase;
 		flash->flash.write = esp32c3_spi_flash_write;
 		flash->flash.erase = esp32c3_spi_flash_erase;
 	}
@@ -434,20 +437,15 @@ static bool esp32c3_exit_flash_mode(target_s *const target)
 
 static bool esp32c3_spi_flash_erase(target_flash_s *const flash, const target_addr_t addr, const size_t length)
 {
-	(void)length;
 	target_s *const target = flash->t;
-	const spi_flash_s *const spi_flash = (spi_flash_s *)flash;
-	esp32c3_spi_run_command(target, SPI_FLASH_CMD_WRITE_ENABLE, 0U);
-	if (!(esp32c3_spi_read_status(target) & SPI_FLASH_STATUS_WRITE_ENABLED))
+	esp32c3_priv_s *const priv = (esp32c3_priv_s *)target->target_storage;
+	/* Call the underlying erase routine */
+	const bool result = priv->spi_flash_erase(flash, addr, length);
+	/* If it didn't work out, propergate the failure */
+	if (!result)
 		return false;
-
-	esp32c3_spi_run_command(
-		target, SPI_FLASH_CMD_SECTOR_ERASE | SPI_FLASH_OPCODE(spi_flash->sector_erase_opcode), addr - flash->start);
-	while (esp32c3_spi_read_status(target) & SPI_FLASH_STATUS_BUSY)
-		continue;
 	/* Update the address of the last invalidated sector so we can correctly invalidate the i-cache and reload it */
-	esp32c3_priv_s *const priv = (esp32c3_priv_s *)target->target_storage;
-	priv->last_invalidated_sector = addr + length;
+	priv->last_invalidated_sector = addr + flash->blocksize;
 	return true;
 }