diff options
| author | Rizwan Qureshi <rizwan.qureshi@intel.com> | 2018-10-26 16:54:42 +0530 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-01-21 13:25:46 +0000 |
| commit | 6d4c1f5f43cd1ca0324b9199af9e4a65966dc301 (patch) | |
| tree | 62894ce63cc0738c4c304cecbf2dc1834f9c629e /src/include | |
| parent | f9f50936446e8e441238ecfe12ce0fc9e04d491a (diff) | |
lib/boot_device: Add API for write protect a region
Add API that should be implemented by the boot media drivers
for write-protecting a subregion.
Change-Id: I4c9376e2c2c7a4852f13c65824c6cd64a1c6ac0a
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-on: https://review.coreboot.org/c/28724
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/boot_device.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/include/boot_device.h b/src/include/boot_device.h index cc70442e1e..c882968e58 100644 --- a/src/include/boot_device.h +++ b/src/include/boot_device.h @@ -19,6 +19,22 @@ #include <commonlib/region.h> /* + * Boot device region can be protected by 2 sources, media and controller. + * The following modes are identified. It depends on the flash chip and the + * controller if mode is actually supported. + * + * MEDIA_WP : Flash/Boot device enforces write protect + * CTRLR_WP : Controller device enforces write protect + * CTRLR_RP : Controller device enforces read protect + * CTRLR_RWP : Controller device enforces read-write protect + */ +enum bootdev_prot_type { + CTRLR_WP = 1, + CTRLR_RP = 2, + CTRLR_RWP = 3, + MEDIA_WP = 4, +}; +/* * Please note that the read-only boot device may not be coherent with * the read-write boot device. Thus, mixing mmap() and writeat() is * most likely not to work so don't rely on such semantics. @@ -45,6 +61,14 @@ int boot_device_rw_subregion(const struct region *sub, struct region_device *subrd); /* + * Write protect a sub-region of the boot device represented + * by the region device. + * Returns 0 on success, < 0 on error. + */ +int boot_device_wp_region(struct region_device *rd, + const enum bootdev_prot_type type); + +/* * Initialize the boot device. This may be called multiple times within * a stage so boot device implementations should account for this behavior. **/ |