libflashrom: Return progress state to the library user

Projects using libflashrom like fwupd expect the user to wait for the
operation to complete. To avoid the user thinking the process has
"hung" or "got stuck" report back the progress complete of the erase,
write and read operations.

Add a new --progress flag to the CLI to report progress of operations.

Include a test for the dummy spi25 device.

TEST=./test_build.sh; ./flashrom -p lspcon_i2c_spi:bus=7 -r /dev/null --progress

Change-Id: I7197572bb7f19e3bdb2bde855d70a0f50fd3854c
Signed-off-by: Richard Hughes <richard@hughsie.com>
Signed-off-by: Daniel Campello <campello@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/49643
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Thomas Heijligen <src@posteo.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/spi.c b/spi.c
index f2e91c4d9..9f820d705 100644
--- a/spi.c
+++ b/spi.c
@@ -101,6 +101,8 @@ int spi_chip_read(struct flashctx *flash, uint8_t *buf, unsigned int start,
 {
 	int ret;
 	size_t to_read;
+	size_t start_address = start;
+	size_t end_address = len - start;
 	for (; len; len -= to_read, buf += to_read, start += to_read) {
 		/* Do not cross 16MiB boundaries in a single transfer.
 		   This helps with
@@ -110,6 +112,7 @@ int spi_chip_read(struct flashctx *flash, uint8_t *buf, unsigned int start,
 		ret = flash->mst->spi.read(flash, buf, start, to_read);
 		if (ret)
 			return ret;
+		update_progress(flash, FLASHROM_PROGRESS_READ, start - start_address + to_read, end_address);
 	}
 	return 0;
 }