diff options
Diffstat (limited to 'drivers/firmware/efi/libstub/screen_info.c')
| -rw-r--r-- | drivers/firmware/efi/libstub/screen_info.c | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/drivers/firmware/efi/libstub/screen_info.c b/drivers/firmware/efi/libstub/screen_info.c deleted file mode 100644 index 5d3a1e32d177..000000000000 --- a/drivers/firmware/efi/libstub/screen_info.c +++ /dev/null @@ -1,53 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -#include <linux/efi.h> -#include <linux/screen_info.h> - -#include <asm/efi.h> - -#include "efistub.h" - -/* - * There are two ways of populating the core kernel's struct screen_info via the stub: - * - using a configuration table, like below, which relies on the EFI init code - * to locate the table and copy the contents; - * - by linking directly to the core kernel's copy of the global symbol. - * - * The latter is preferred because it makes the EFIFB earlycon available very - * early, but it only works if the EFI stub is part of the core kernel image - * itself. The zboot decompressor can only use the configuration table - * approach. - */ - -static efi_guid_t screen_info_guid = LINUX_EFI_SCREEN_INFO_TABLE_GUID; - -struct screen_info *__alloc_screen_info(void) -{ - struct screen_info *si; - efi_status_t status; - - status = efi_bs_call(allocate_pool, EFI_ACPI_RECLAIM_MEMORY, - sizeof(*si), (void **)&si); - - if (status != EFI_SUCCESS) - return NULL; - - memset(si, 0, sizeof(*si)); - - status = efi_bs_call(install_configuration_table, - &screen_info_guid, si); - if (status == EFI_SUCCESS) - return si; - - efi_bs_call(free_pool, si); - return NULL; -} - -void free_screen_info(struct screen_info *si) -{ - if (!si) - return; - - efi_bs_call(install_configuration_table, &screen_info_guid, NULL); - efi_bs_call(free_pool, si); -} |
