diff options
| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2016-09-14 15:42:56 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2016-09-16 21:59:08 -0700 |
| commit | fd418235953ed853bbb2093d307679604e539902 (patch) | |
| tree | aa2a50afcffb789c5e87c1ef5e163e17470b3da2 /include/flash.h | |
| parent | 258bc48bacf948e7f95b98bfc847c3cc0d5f515d (diff) | |
| download | chrome-ec-fd418235953ed853bbb2093d307679604e539902.tar.gz | |
flash: Call lock function prior to mapped external read
Mapped read access to external flash may conflict with direct access
through SPI commands, so call a chip-level function to lock access prior
to doing such reads.
BUG=chrome-os-partner:55781
BRANCH=Gru
TEST=Verify 'ver' still works fine on kevin, and vboot hashing completes
successfully.
Change-Id: I009d6d5ee61c83260fb49ad4ee137fa3f4cd625a
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/385165
Tested-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Mulin Chao <mlchao@nuvoton.com>
(cherry picked from commit a7f3e3fa376731709f4823a0c1d464b4d1deae14)
Reviewed-on: https://chromium-review.googlesource.com/386446
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
Diffstat (limited to 'include/flash.h')
| -rw-r--r-- | include/flash.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/flash.h b/include/flash.h index 03a6e89c25..e0873028f5 100644 --- a/include/flash.h +++ b/include/flash.h @@ -261,4 +261,14 @@ const char *flash_read_serial(void); */ int flash_write_serial(const char *serialno); +/** + * Lock or unlock HW necessary for mapped storage read. + * + * @param lock 1 to lock, 0 to unlock. + */ +#ifdef CONFIG_EXTERNAL_STORAGE +void flash_lock_mapped_storage(int lock); +#else +static inline void flash_lock_mapped_storage(int lock) { }; +#endif /* CONFIG_EXTERNAL_STORAGE */ #endif /* __CROS_EC_FLASH_H */ |