diff options
| author | Rob Clark <robdclark@gmail.com> | 2017-10-10 08:23:06 -0400 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2017-10-12 17:22:58 +0200 |
| commit | bf19273e81eb5e23c9bc14c3881f92a120565561 (patch) | |
| tree | 0d93e3782caf9afc4295d1f8a872ab798bbd0adf /lib/efi_loader/efi_device_path.c | |
| parent | bcbc4a80462c42c5d5ccac0287b8a7d49df9e179 (diff) | |
efi_loader: Add mem-mapped for fallback
When we don't have a real device/image path, such as 'bootefi hello',
construct a mem-mapped device-path.
This fixes 'bootefi hello' after devicepath refactoring.
Fixes: 95c5553ea2 ("efi_loader: refactor boot device and loaded_image handling")
Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'lib/efi_loader/efi_device_path.c')
| -rw-r--r-- | lib/efi_loader/efi_device_path.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c index 5d5c3b3464..f6e368e029 100644 --- a/lib/efi_loader/efi_device_path.c +++ b/lib/efi_loader/efi_device_path.c @@ -538,6 +538,30 @@ struct efi_device_path *efi_dp_from_eth(void) } #endif +/* Construct a device-path for memory-mapped image */ +struct efi_device_path *efi_dp_from_mem(uint32_t memory_type, + uint64_t start_address, + uint64_t end_address) +{ + struct efi_device_path_memory *mdp; + void *buf, *start; + + start = buf = dp_alloc(sizeof(*mdp) + sizeof(END)); + + mdp = buf; + mdp->dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE; + mdp->dp.sub_type = DEVICE_PATH_SUB_TYPE_MEMORY; + mdp->dp.length = sizeof(*mdp); + mdp->memory_type = memory_type; + mdp->start_address = start_address; + mdp->end_address = end_address; + buf = &mdp[1]; + + *((struct efi_device_path *)buf) = END; + + return start; +} + /* * Helper to split a full device path (containing both device and file * parts) into it's constituent parts. |