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authorStefan Brüns <stefan.bruens@rwth-aachen.de>2016-10-09 22:17:18 +0200
committerAlexander Graf <agraf@suse.de>2016-10-18 09:08:07 +0200
commitead1274b7f9578e346b3cdcb3d9e2002ef8f0e75 (patch)
tree2bd5c709a3dbbac929d8b056ddfa4141b404a04c /lib/efi_loader/efi_memory.c
parent991d62fa73a35598a8939a83dd84369168220d35 (diff)
efi_loader: Move efi_allocate_pool implementation to efi_memory.c
We currently handle efi_allocate_pool() in our boot time service file. In the following patch, pool allocation will receive additional internal semantics that we should preserve inside efi_memory.c instead. As foundation for those changes, split the function into an externally facing efi_allocate_pool_ext() for use by payloads and an internal helper efi_allocate_pool() in efi_memory.c that handles the actual allocation. While at it, change the magic 0xfff / 12 constants to the more obvious EFI_PAGE_MASK/SHIFT defines. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'lib/efi_loader/efi_memory.c')
-rw-r--r--lib/efi_loader/efi_memory.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
index 1d23783020..be642f12a9 100644
--- a/lib/efi_loader/efi_memory.c
+++ b/lib/efi_loader/efi_memory.c
@@ -327,6 +327,20 @@ efi_status_t efi_free_pages(uint64_t memory, unsigned long pages)
return EFI_SUCCESS;
}
+efi_status_t efi_allocate_pool(int pool_type, unsigned long size,
+ void **buffer)
+{
+ efi_status_t r;
+ efi_physical_addr_t t;
+ u64 num_pages = (size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT;
+
+ r = efi_allocate_pages(0, pool_type, num_pages, &t);
+ if (r == EFI_SUCCESS)
+ *buffer = (void *)(uintptr_t)t;
+
+ return r;
+}
+
efi_status_t efi_get_memory_map(unsigned long *memory_map_size,
struct efi_mem_desc *memory_map,
unsigned long *map_key,