diff options
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. |