mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-08 05:43:53 +00:00
8953568a2d
According to Platform Initialization (PI) Specification [1] and
discussion on edk2 mailing list [2],
StandaloneMm shouldn't create Hob but it should be passed from TF-A.
IOW, TF-A should pass boot information via HOB list to initialise
StandaloneMm properly.
And this HOB lists could be delivered via
- SPM_MM: Transfer List according to the firmware handoff spec[3]
- FF-A v1.1 >= : FF-A boot protocol.
This patch introduces a TF-A HOB creation library and
some of definitions which StandaloneMm requires to boot.
Link: https://uefi.org/sites/default/files/resources/PI_Spec_1_6.pdf [1]
Link: https://edk2.groups.io/g/devel/topic/103675962#114283 [2]
Link: https://github.com/FirmwareHandoff/firmware_handoff [3]
Signed-off-by: Levi Yun <yeoreum.yun@arm.com>
Change-Id: I5e0838adce487110206998a8b79bc3adca922cec
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#ifndef MMRAM_H
|
|
#define MMRAM_H
|
|
|
|
#include <lib/hob/efi_types.h>
|
|
|
|
/**
|
|
* MMRAM states and capabilities
|
|
* See UEFI Platform Initialization Specification Version 1.8, IV-5.3.5
|
|
*/
|
|
#define EFI_MMRAM_OPEN U(0x00000001)
|
|
#define EFI_MMRAM_CLOSED U(0x00000002)
|
|
#define EFI_MMRAM_LOCKED U(0x00000004)
|
|
#define EFI_CACHEABLE U(0x00000008)
|
|
#define EFI_ALLOCATED U(0x00000010)
|
|
#define EFI_NEEDS_TESTING U(0x00000020)
|
|
#define EFI_NEEDS_ECC_INITIALIZATION U(0x00000040)
|
|
|
|
#define EFI_SMRAM_OPEN EFI_MMRAM_OPEN
|
|
#define EFI_SMRAM_CLOSED EFI_MMRAM_CLOSED
|
|
#define EFI_SMRAM_LOCKED EFI_MMRAM_LOCKED
|
|
|
|
struct efi_mmram_descriptor {
|
|
efi_physical_address_t physical_start;
|
|
efi_physical_address_t cpu_start;
|
|
uint64_t physical_size;
|
|
uint64_t region_state;
|
|
};
|
|
|
|
/**
|
|
* MMRAM block descriptor
|
|
* This definition comes from
|
|
* https://github.com/tianocore/edk2/blob/master/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h
|
|
*/
|
|
struct efi_mmram_hob_descriptor_block {
|
|
uint32_t number_of_mm_reserved_regions;
|
|
struct efi_mmram_descriptor descriptor[];
|
|
};
|
|
|
|
#endif /* MMRAM_H */
|