From 00c9fac2a66ab2aafc6949166dfc733fd0b747ea Mon Sep 17 00:00:00 2001 From: Nikolai Artemiev Date: Wed, 3 May 2023 11:05:07 +1000 Subject: flashrom: Use WP-based unlocking on opaque masters Flashrom only tries to use WP-based unlocking if it detects that WP operations are supported. However WP support was detected in a way that ignored WP operations provided by opaque masters. This stopped flashrom from automatically unlocking with some opaque masters, particularly linux_mtd. This commit also deletes part of a test that required the chip unlock function to be called before read/write/erase operations because WP unlocking is now used instead of chip unlocking. BUG=b:280111380 BRANCH=none TEST=Checked flashrom automatically unlocked flash on strongbad (MTD) Change-Id: I1774ad64d82ae47cd085df6045e17e283855c01f Signed-off-by: Nikolai Artemiev Reviewed-on: https://review.coreboot.org/c/flashrom/+/74930 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan Reviewed-by: Sergii Dmytruk --- tests/chip.c | 37 +------------------------------------ 1 file changed, 1 insertion(+), 36 deletions(-) (limited to 'tests') diff --git a/tests/chip.c b/tests/chip.c index 6a17d8627..96be7b108 100644 --- a/tests/chip.c +++ b/tests/chip.c @@ -20,7 +20,7 @@ * Example of test: erase_chip_test_success. * * 2) Mock chip operations backed by `dummyflasher` emulation. - * Dummyflasher controls chip state and emulates read/write/unlock/erase. + * Dummyflasher controls chip state and emulates read/write/erase. * `g_chip_state` is NOT used for this type of tests. * Example of test: erase_chip_with_dummyflasher_test_success. */ @@ -40,20 +40,14 @@ #define MOCK_CHIP_CONTENT 0xCC /* 0x00 is a zeroed heap and 0xFF is an erased chip. */ static struct { - unsigned int unlock_calls; /* how many times unlock function was called */ uint8_t buf[MOCK_CHIP_SIZE]; /* buffer of total size of chip, to emulate a chip */ } g_chip_state = { - .unlock_calls = 0, .buf = { 0 }, }; static int read_chip(struct flashctx *flash, uint8_t *buf, unsigned int start, unsigned int len) { printf("Read chip called with start=0x%x, len=0x%x\n", start, len); - if (!g_chip_state.unlock_calls) { - printf("Error while reading chip: unlock was not called.\n"); - return 1; - } assert_in_range(start + len, 0, MOCK_CHIP_SIZE); @@ -64,10 +58,6 @@ static int read_chip(struct flashctx *flash, uint8_t *buf, unsigned int start, u static int write_chip(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len) { printf("Write chip called with start=0x%x, len=0x%x\n", start, len); - if (!g_chip_state.unlock_calls) { - printf("Error while writing chip: unlock was not called.\n"); - return 1; - } assert_in_range(start + len, 0, MOCK_CHIP_SIZE); @@ -75,26 +65,9 @@ static int write_chip(struct flashctx *flash, const uint8_t *buf, unsigned int s return 0; } -static int unlock_chip(struct flashctx *flash) -{ - printf("Unlock chip called\n"); - g_chip_state.unlock_calls++; - - if (g_chip_state.unlock_calls > 1) { - printf("Error: Unlock called twice\n"); - return -1; - } - - return 0; -} - static int block_erase_chip(struct flashctx *flash, unsigned int blockaddr, unsigned int blocklen) { printf("Block erase called with blockaddr=0x%x, blocklen=0x%x\n", blockaddr, blocklen); - if (!g_chip_state.unlock_calls) { - printf("Error while erasing chip: unlock was not called.\n"); - return 1; - } assert_in_range(blockaddr + blocklen, 0, MOCK_CHIP_SIZE); @@ -109,7 +82,6 @@ static void setup_chip(struct flashrom_flashctx *flashctx, struct flashrom_layou flashctx->chip = chip; - g_chip_state.unlock_calls = 0; memset(g_chip_state.buf, MOCK_CHIP_CONTENT, sizeof(g_chip_state.buf)); printf("Creating layout with one included region... "); @@ -149,7 +121,6 @@ static void teardown(struct flashrom_layout **layout) extern write_func_t *g_test_write_injector; extern read_func_t *g_test_read_injector; extern erasefunc_t *g_test_erase_injector; -extern blockprotect_func_t *g_test_unlock_injector; static const struct flashchip chip_8MiB = { .vendor = "aklm", @@ -157,7 +128,6 @@ static const struct flashchip chip_8MiB = { .tested = TEST_OK_PREW, .read = TEST_READ_INJECTOR, .write = TEST_WRITE_INJECTOR, - .unlock = TEST_UNLOCK_INJECTOR, .block_erasers = {{ /* All blocks within total size of the chip. */ @@ -173,7 +143,6 @@ static const struct flashchip chip_W25Q128_V = { .tested = TEST_OK_PREW, .read = SPI_CHIP_READ, .write = SPI_CHIP_WRITE256, - .unlock = SPI_DISABLE_BLOCKPROTECT, .page_size = 256, .block_erasers = { @@ -211,7 +180,6 @@ void erase_chip_test_success(void **state) g_test_write_injector = write_chip; g_test_read_injector = read_chip; g_test_erase_injector = block_erase_chip; - g_test_unlock_injector = unlock_chip; struct flashrom_flashctx flashctx = { 0 }; struct flashrom_layout *layout; struct flashchip mock_chip = chip_8MiB; @@ -271,7 +239,6 @@ void read_chip_test_success(void **state) g_test_write_injector = write_chip; g_test_read_injector = read_chip; g_test_erase_injector = block_erase_chip; - g_test_unlock_injector = unlock_chip; struct flashrom_flashctx flashctx = { 0 }; struct flashrom_layout *layout; struct flashchip mock_chip = chip_8MiB; @@ -347,7 +314,6 @@ void write_chip_test_success(void **state) g_test_write_injector = write_chip; g_test_read_injector = read_chip; g_test_erase_injector = block_erase_chip; - g_test_unlock_injector = unlock_chip; struct flashrom_flashctx flashctx = { 0 }; struct flashrom_layout *layout; struct flashchip mock_chip = chip_8MiB; @@ -539,7 +505,6 @@ void verify_chip_test_success(void **state) g_test_write_injector = write_chip; g_test_read_injector = read_chip; g_test_erase_injector = block_erase_chip; - g_test_unlock_injector = unlock_chip; struct flashrom_flashctx flashctx = { 0 }; struct flashrom_layout *layout; struct flashchip mock_chip = chip_8MiB; -- cgit v1.2.3