Commit 4054d2ba authored by Kamil Piszczek's avatar Kamil Piszczek Committed by Carles Cufi
Browse files

drivers: flash: flash_simulator: added max write calls param 



Added a new runtime parameter to the Flash Simulator. It can be used to
ignore any writes to the simulated flash memory after a certain number
of flash write calls has been executed. This behaviour is useful for
simulating power down during the flash write operation.

Signed-off-by: default avatarKamil Piszczek <Kamil.Piszczek@nordicsemi.no>
parent 6b772f99

drivers/flash/flash_simulator.c

+18 −0
Original line number Diff line number Diff line
@@ -87,6 +87,16 @@ UTIL_EVAL(UTIL_REPEAT(FLASH_SIMULATOR_FLASH_PAGE_COUNT, STATS_NAME_EC)) 
UTIL_EVAL(UTIL_REPEAT(FLASH_SIMULATOR_FLASH_PAGE_COUNT, STATS_NAME_DIRTYR))

STATS_NAME_END(flash_sim_stats);



/* simulator dynamic thresholds */

STATS_SECT_START(flash_sim_thresholds)

STATS_SECT_ENTRY32(max_write_calls)

STATS_SECT_END;



STATS_SECT_DECL(flash_sim_thresholds) flash_sim_thresholds;

STATS_NAME_START(flash_sim_thresholds)

STATS_NAME(flash_sim_thresholds, max_write_calls)

STATS_NAME_END(flash_sim_thresholds);



static u8_t mock_flash[FLASH_SIZE];

static bool write_protection;
@@ -178,6 +188,12 @@ static int flash_sim_write(struct device *dev, const off_t offset, 
		}

	}



	if ((flash_sim_thresholds.max_write_calls != 0) &&

	    (flash_sim_stats.flash_write_calls >

		flash_sim_thresholds.max_write_calls)){

		return 0;

	}



	for (u32_t i = 0; i < len; i++) {

		/* only pull bits to zero */

		*(FLASH(offset + i)) &= *((u8_t *)data + i);
@@ -279,6 +295,8 @@ static const struct flash_driver_api flash_sim_api = { 
static int flash_init(struct device *dev)

{

	STATS_INIT_AND_REG(flash_sim_stats, STATS_SIZE_32, "flash_sim_stats");

	STATS_INIT_AND_REG(flash_sim_thresholds, STATS_SIZE_32,

			   "flash_sim_thresholds");

	memset(mock_flash, 0xFF, ARRAY_SIZE(mock_flash));



	return 0;

CRA Git | Maintained and supported by SUSTech CRA and CCSE