leandrof/u-boot
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

cros_ec: Add vstore support

Browse Source 
The EC can store small amounts of data for the benefit of the
verified boot process. Since the EC is seldom reset, this can allow the
AP to store data that survives a reboot or a suspend/resume cycle.

Add support for this.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2021-01-16 14:52:31 -07:00
parent d9ffaef6fe
commit 10f746591f
4 changed files with 202 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
test/dm/cros_ec.c
View File

@@ -56,6 +56,7 @@ static int dm_test_cros_ec_features(struct unit_test_state *uts)
ut_assertok(uclass_first_device_err(UCLASS_CROS_EC, &dev));
ut_assertok(cros_ec_get_features(dev, &feat));
ut_asserteq_64(1U << EC_FEATURE_FLASH | 1U << EC_FEATURE_I2C |
1u << EC_FEATURE_VSTORE |
1ULL << EC_FEATURE_UNIFIED_WAKE_MASKS | 1ULL << EC_FEATURE_ISH,
feat);
@@ -68,6 +69,7 @@ static int dm_test_cros_ec_features(struct unit_test_state *uts)
ut_assertok(run_command("crosec features", 0));
ut_assert_nextline("flash");
ut_assert_nextline("i2c");
ut_assert_nextline("vstore");
ut_assert_nextline("unified_wake_masks");
ut_assert_nextline("ish");
ut_assert_console_end();
@@ -138,3 +140,39 @@ static int dm_test_cros_ec_events(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_cros_ec_events, UT_TESTF_SCAN_FDT);
static int dm_test_cros_ec_vstore(struct unit_test_state *uts)
{
const int size = EC_VSTORE_SLOT_SIZE;
u8 test_data[size], data[size];
struct udevice *dev;
u32 locked;
int i;
ut_assertok(uclass_first_device_err(UCLASS_CROS_EC, &dev));
ut_asserteq(true, cros_ec_vstore_supported(dev));
ut_asserteq(4, cros_ec_vstore_info(dev, &locked));
ut_asserteq(0, locked);
/* Write some data */
for (i = 0; i < size; i++)
test_data[i] = ' ' + i;
ut_assertok(cros_ec_vstore_write(dev, 2, test_data, size));
/* Check it is locked */
ut_asserteq(4, cros_ec_vstore_info(dev, &locked));
ut_asserteq(1 << 2, locked);
/* Read it back and compare */
ut_assertok(cros_ec_vstore_read(dev, 2, data));
ut_asserteq_mem(test_data, data, size);
/* Try another slot to make sure it is empty */
ut_assertok(cros_ec_vstore_read(dev, 0, data));
for (i = 0; i < size; i++)
ut_asserteq(0, data[i]);
return 0;
}
DM_TEST(dm_test_cros_ec_vstore, UT_TESTF_SCAN_FDT);