stm32f07: change erase page size to 2kB

Change erase page size from 1kB to 2kB. The datasheet
specifies that the page size is 2kB.

This was causing occasional failures in flashrom because
flashrom only erases and writes pages where the flash
contents don't match the new binary.

BUG=none
BRANCH=factory-ryu-6212.B
TEST=Load onto samus_pd, and verify that flashrom
works successfully.

Also added console debugging to verify that the actual erase
page size is 2kB. I left the CONFIG_FLASH_ERASE_SIZE at 1024
and added the following code.

static int command_flash_is_erased(int argc, char **argv)
{
	int offset = -1;
	int size = CONFIG_FLASH_ERASE_SIZE;
	int rv;

	rv = parse_offset_size(argc, argv, 1, &offset, &size);
	if (rv)
		return rv;

	ccprintf("Offset %d, size %d, is erased: %d\n", offset, size,
		flash_is_erased(offset, size));

	return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(flashiserased, command_flash_is_erased,
			"",
			"",
			NULL);

Then:
> flashiserased 2048
Offset 2048, size 1024, is erased: 0
> flashiserased 3072
Offset 3072, size 1024, is erased: 0
> flashiserased 4096
Offset 4096, size 1024, is erased: 0
> flasherase 2048
Erasing 1024 bytes at 0x800...
> flashiserased 2048
Offset 2048, size 1024, is erased: 1
> flashiserased 3072
Offset 3072, size 1024, is erased: 1
> flashiserased 4096
Offset 4096, size 1024, is erased: 0

You can see when it tries to erase 1kB at 2048, it actually erases
2kB.

Change-Id: I02772d4671784930765df63fa99968a07b15882e
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/217475
Reviewed-by: Vic Yang <victoryang@chromium.org>

0 files changed, 0 insertions, 0 deletions