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[efi] Perform meaningful error code conversions

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Exploit the redefinition of iPXE error codes to include a "platform
error code" to allow for meaningful conversion of EFI_STATUS values to
iPXE errors and vice versa.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2013-04-18 21:29:53 +01:00
parent 7348035231
commit 54409583e2
20 changed files with 212 additions and 200 deletions
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9
src/interface/efi/efi_umalloc.c
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@@ -19,6 +19,8 @@
FILE_LICENCE ( GPL2_OR_LATER );
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <ipxe/umalloc.h>
#include <ipxe/efi/efi.h>
@@ -49,6 +51,7 @@ static userptr_t efi_urealloc ( userptr_t old_ptr, size_t new_size ) {
userptr_t new_ptr = UNOWHERE;
size_t old_size;
EFI_STATUS efirc;
int rc;
/* Allocate new memory if necessary. If allocation fails,
* return without touching the old block.
@@ -59,8 +62,9 @@ static userptr_t efi_urealloc ( userptr_t old_ptr, size_t new_size ) {
EfiBootServicesData,
new_pages,
&phys_addr ) ) != 0 ) {
rc = -EEFI ( efirc );
DBG ( "EFI could not allocate %d pages: %s\n",
new_pages, efi_strerror ( efirc ) );
new_pages, strerror ( rc ) );
return UNULL;
}
assert ( phys_addr != 0 );
@@ -84,8 +88,9 @@ static userptr_t efi_urealloc ( userptr_t old_ptr, size_t new_size ) {
old_pages = ( EFI_SIZE_TO_PAGES ( old_size ) + 1 );
phys_addr = user_to_phys ( old_ptr, -EFI_PAGE_SIZE );
if ( ( efirc = bs->FreePages ( phys_addr, old_pages ) ) != 0 ){
rc = -EEFI ( efirc );
DBG ( "EFI could not free %d pages at %llx: %s\n",
old_pages, phys_addr, efi_strerror ( efirc ) );
old_pages, phys_addr, strerror ( rc ) );
/* Not fatal; we have leaked memory but successfully
* allocated (if asked to do so).
*/