Example #1
0
static int flash_set_status_for_prot(int reg1, int reg2)
{
	/* Lock physical flash operations */
	flash_lock_mapped_storage(1);

	/* Disable tri-state */
	TRISTATE_FLASH(0);
	/* Enable write */
	flash_write_enable();

	NPCX_UMA_DB0 = reg1;
	NPCX_UMA_DB1 = reg2;

	/* Write status register 1/2 */
	flash_execute_cmd(CMD_WRITE_STATUS_REG, MASK_CMD_WR_2BYTE);
	/* Enable tri-state */
	TRISTATE_FLASH(1);

	/* Unlock physical flash operations */
	flash_lock_mapped_storage(0);

	reg_to_protect(reg1, reg2, &addr_prot_start, &addr_prot_length);

	return EC_SUCCESS;
}
Example #2
0
int flash_physical_read(int offset, int size, char *data)
{
	int dest_addr = offset;
	uint32_t idx;

	/* Disable tri-state */
	TRISTATE_FLASH(0);
	/* Chip Select down. */
	flash_cs_level(0);

	/* Set read address */
	flash_set_address(dest_addr);
	/* Start fast read - 1110 1001 - EXEC, WR, CMD, ADDR */
	flash_execute_cmd(CMD_FAST_READ, MASK_CMD_ADR_WR);

	/* Burst read transaction */
	for (idx = 0; idx < size; idx++) {
		/* 1101 0101 - EXEC, RD, NO CMD, NO ADDR, 4 bytes */
		NPCX_UMA_CTS  = MASK_RD_1BYTE;
		/* wait for UMA to complete */
		while (IS_BIT_SET(NPCX_UMA_CTS, EXEC_DONE))
			;
		/* Get read transaction results*/
		data[idx] = NPCX_UMA_DB0;
	}

	/* Chip Select up */
	flash_cs_level(1);
	/* Enable tri-state */
	TRISTATE_FLASH(1);
	return EC_SUCCESS;
}
Example #3
0
uint8_t flash_get_status2(void)
{
	/* Disable tri-state */
	TRISTATE_FLASH(0);
	/* Read status register2 */
	flash_execute_cmd(CMD_READ_STATUS_REG2, MASK_CMD_RD_1BYTE);
	/* Enable tri-state */
	TRISTATE_FLASH(1);
	return NPCX_UMA_DB0;
}
Example #4
0
int flash_physical_write(int offset, int size, const char *data)
{
	int dest_addr = offset;
	const int sz_page = CONFIG_FLASH_WRITE_IDEAL_SIZE;

	/* Fail if offset, size, and data aren't at least word-aligned */
	if ((offset | size
	     | (uint32_t)(uintptr_t)data) & (CONFIG_FLASH_WRITE_SIZE - 1))
		return EC_ERROR_INVAL;

	/* check protection */
	if (all_protected)
		return EC_ERROR_ACCESS_DENIED;

	/* Disable tri-state */
	TRISTATE_FLASH(0);

	/* Write the data per CONFIG_FLASH_WRITE_IDEAL_SIZE bytes */
	for (; size >= sz_page; size -= sz_page) {

		/* check protection */
		if (flash_check_prot_range(dest_addr, sz_page))
			return EC_ERROR_ACCESS_DENIED;

		/* Enable write */
		flash_write_enable();
		/* Burst UMA transaction */
		flash_burst_write(dest_addr, sz_page, data);
		/* Wait write completed */
		flash_wait_ready();

		data += sz_page;
		dest_addr += sz_page;
	}

	/* Handle final partial page, if any */
	if (size != 0) {
		/* check protection */
		if (flash_check_prot_range(dest_addr, size))
			return EC_ERROR_ACCESS_DENIED;

		/* Enable write */
		flash_write_enable();
		/* Burst UMA transaction */
		flash_burst_write(dest_addr, size, data);
		/* Wait write completed */
		flash_wait_ready();
	}

	/* Enable tri-state */
	TRISTATE_FLASH(1);
	return EC_SUCCESS;
}
Example #5
0
int flash_physical_erase(int offset, int size)
{
	int rv = EC_SUCCESS;
	/* check protection */
	if (all_protected)
		return EC_ERROR_ACCESS_DENIED;

	/* Lock physical flash operations */
	flash_lock_mapped_storage(1);

	/* Disable tri-state */
	TRISTATE_FLASH(0);

	/* Alignment has been checked in upper layer */
	for (; size > 0; size -= CONFIG_FLASH_ERASE_SIZE,
		offset += CONFIG_FLASH_ERASE_SIZE) {
		/* check protection */
		if (flash_check_prot_range(offset, CONFIG_FLASH_ERASE_SIZE)) {
			rv = EC_ERROR_ACCESS_DENIED;
			break;
		}

		/*
		 * Reload the watchdog timer, so that erasing many flash pages
		 * doesn't cause a watchdog reset.  May not need this now that
		 * we're using msleep() below.
		 */
		watchdog_reload();

		/* Enable write */
		rv = flash_write_enable();
		if (rv)
			break;

		/* Set erase address */
		flash_set_address(offset);
		/* Start erase */
		flash_execute_cmd(CMD_SECTOR_ERASE, MASK_CMD_ADR);

		/* Wait erase completed */
		rv = flash_wait_ready(FLASH_ABORT_TIMEOUT);
		if (rv)
			break;
	}

	/* Enable tri-state */
	TRISTATE_FLASH(1);

	/* Unlock physical flash operations */
	flash_lock_mapped_storage(0);

	return rv;
}
Example #6
0
void flash_get_jedec_id(uint8_t *dest)
{
	/* Disable tri-state */
	TRISTATE_FLASH(0);
	/* Read manufacturer and device ID */
	flash_execute_cmd(CMD_READ_ID, MASK_CMD_RD_3BYTE);
	/* Enable tri-state */
	TRISTATE_FLASH(1);

	dest[0] = NPCX_UMA_DB0;
	dest[1] = NPCX_UMA_DB1;
	dest[2] = NPCX_UMA_DB2;
}
Example #7
0
void flash_get_mfr_dev_id(uint8_t *dest)
{
	/* Disable tri-state */
	TRISTATE_FLASH(0);
	/* Read manufacturer and device ID.  Send cmd=0x90 + 24-bit address=0 */
	flash_set_address(0);
	flash_execute_cmd(CMD_READ_MAN_DEV_ID,
			  MASK_CMD_RD_2BYTE | MASK(A_SIZE));
	/* Enable tri-state */
	TRISTATE_FLASH(1);

	dest[0] = NPCX_UMA_DB0;
	dest[1] = NPCX_UMA_DB1;
}
Example #8
0
int flash_physical_write(int offset, int size, const char *data)
{
	int dest_addr = offset;
	int write_len;
	int rv;

	/* Fail if offset, size, and data aren't at least word-aligned */
	if ((offset | size
	     | (uint32_t)(uintptr_t)data) & (CONFIG_FLASH_WRITE_SIZE - 1))
		return EC_ERROR_INVAL;

	/* check protection */
	if (all_protected)
		return EC_ERROR_ACCESS_DENIED;

	/* Lock physical flash operations */
	flash_lock_mapped_storage(1);

	/* Disable tri-state */
	TRISTATE_FLASH(0);

	while (size > 0) {
		/* First write multiples of 256, then (size % 256) last */
		write_len = ((size % CONFIG_FLASH_WRITE_IDEAL_SIZE) == size) ?
					size : CONFIG_FLASH_WRITE_IDEAL_SIZE;

		/* check protection */
		if (flash_check_prot_range(dest_addr, write_len)) {
			rv = EC_ERROR_ACCESS_DENIED;
			break;
		}

		rv = flash_program_bytes(dest_addr, write_len, data);
		if (rv)
			break;

		data      += write_len;
		dest_addr += write_len;
		size      -= write_len;
	}

	/* Enable tri-state */
	TRISTATE_FLASH(1);

	/* Unlock physical flash operations */
	flash_lock_mapped_storage(0);

	return rv;
}
Example #9
0
int flash_physical_erase(int offset, int size)
{
	/* check protection */
	if (all_protected)
		return EC_ERROR_ACCESS_DENIED;

	/* Disable tri-state */
	TRISTATE_FLASH(0);

	/* Alignment has been checked in upper layer */
	for (; size > 0; size -= CONFIG_FLASH_ERASE_SIZE,
		offset += CONFIG_FLASH_ERASE_SIZE) {

		/* Do nothing if already erased */
		if (flash_is_erased(offset, CONFIG_FLASH_ERASE_SIZE))
			continue;

		/* check protection */
		if (flash_check_prot_range(offset, CONFIG_FLASH_ERASE_SIZE))
			return EC_ERROR_ACCESS_DENIED;

		/*
		 * Reload the watchdog timer, so that erasing many flash pages
		 * doesn't cause a watchdog reset.  May not need this now that
		 * we're using msleep() below.
		 */
		watchdog_reload();

		/* Enable write */
		flash_write_enable();
		/* Set erase address */
		flash_set_address(offset);
		/* Start erase */
		flash_execute_cmd(CMD_SECTOR_ERASE, MASK_CMD_ADR);

		/* Wait erase completed */
		flash_wait_ready();
	}

	/* Enable tri-state */
	TRISTATE_FLASH(1);
	return EC_SUCCESS;
}
Example #10
0
int flash_physical_read_image_size(int offset, int size)
{
	int dest_addr = offset;
	uint8_t		temp;
	uint32_t	idx;
	uint32_t	image_size = 0;

	/* Disable tri-state */
	TRISTATE_FLASH(0);
	/* Chip Select down. */
	flash_cs_level(0);

	/* Set read address */
	flash_set_address(dest_addr);
	/* Start fast read - 1110 1001 - EXEC, WR, CMD, ADDR */
	flash_execute_cmd(CMD_FAST_READ, MASK_CMD_ADR_WR);

	/* Burst read transaction */
	for (idx = 0; idx < size; idx++) {
		/* 1101 0101 - EXEC, RD, NO CMD, NO ADDR, 4 bytes */
		NPCX_UMA_CTS  = MASK_RD_1BYTE;
		/* wait for UMA to complete */
		while (IS_BIT_SET(NPCX_UMA_CTS, EXEC_DONE))
			;
		/* Find eof of image */
		temp = NPCX_UMA_DB0;
		if (temp == 0xea)
			image_size = idx;
	}

	/* Chip Select up */
	flash_cs_level(1);
	/* Enable tri-state */
	TRISTATE_FLASH(1);
	return image_size;
}