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Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/core

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More EFI updates for v5.7

 - Incorporate a stable branch with the EFI pieces of Hans's work on
   loading device firmware from EFI boot service memory regions

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2020-03-08 08:59:47 +01:00
parent c98a76eabb f0df68d5ba
commit 3be5f0d286
8 changed files with 264 additions and 0 deletions
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7
include/linux/efi.h
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@@ -775,6 +775,7 @@ extern int __init efi_setup_pcdp_console(char *);
#define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
#define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */
#define EFI_MEM_NO_SOFT_RESERVE 11 /* Is the kernel configured to ignore soft reservations? */
#define EFI_PRESERVE_BS_REGIONS 12 /* Are EFI boot-services memory segments available? */
#ifdef CONFIG_EFI
/*
@@ -1097,6 +1098,12 @@ static inline void
efi_enable_reset_attack_mitigation(void) { }
#endif
#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
void efi_check_for_embedded_firmwares(void);
#else
static inline void efi_check_for_embedded_firmwares(void) { }
#endif
efi_status_t efi_random_get_seed(void);
void efi_retrieve_tpm2_eventlog(void);

41
include/linux/efi_embedded_fw.h Normal file
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@@ -0,0 +1,41 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_EFI_EMBEDDED_FW_H
#define _LINUX_EFI_EMBEDDED_FW_H
#include <linux/list.h>
#include <linux/mod_devicetable.h>
#define EFI_EMBEDDED_FW_PREFIX_LEN 8
/*
* This struct and efi_embedded_fw_list are private to the efi-embedded fw
* implementation they are in this header for use by lib/test_firmware.c only!
*/
struct efi_embedded_fw {
struct list_head list;
const char *name;
const u8 *data;
size_t length;
};
extern struct list_head efi_embedded_fw_list;
/**
* struct efi_embedded_fw_desc - This struct is used by the EFI embedded-fw
* code to search for embedded firmwares.
*
* @name: Name to register the firmware with if found
* @prefix: First 8 bytes of the firmware
* @length: Length of the firmware in bytes including prefix
* @sha256: SHA256 of the firmware
*/
struct efi_embedded_fw_desc {
const char *name;
u8 prefix[EFI_EMBEDDED_FW_PREFIX_LEN];
u32 length;
u8 sha256[32];
};
int efi_get_embedded_fw(const char *name, const u8 **dat, size_t *sz);
#endif