mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 07:34:31 +00:00
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
/*
|
||
|
|
* Defines APIs that allow an OS to interact with UEFI firmware to query
|
||
|
|
* information about the boot hart ID.
|
||
|
|
*
|
||
|
|
* Copyright (c) 2022, Ventana Micro Systems Inc
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define LOG_CATEGORY LOGC_EFI
|
||
|
|
#include <common.h>
|
||
|
|
#include <efi_loader.h>
|
||
|
|
#include <efi_variable.h>
|
||
|
|
#include <log.h>
|
||
|
|
#include <asm/global_data.h>
|
||
|
|
#include <efi_riscv.h>
|
||
|
|
|
||
|
|
DECLARE_GLOBAL_DATA_PTR;
|
||
|
|
|
||
|
|
static const efi_guid_t efi_guid_riscv_boot_protocol = RISCV_EFI_BOOT_PROTOCOL_GUID;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* efi_riscv_get_boot_hartid() - return boot hart ID
|
||
|
|
* @this: RISCV_EFI_BOOT_PROTOCOL instance
|
||
|
|
* @boot_hartid: caller allocated memory to return boot hart id
|
||
|
|
* Return: status code
|
||
|
|
*/
|
||
|
|
static efi_status_t EFIAPI
|
||
|
|
efi_riscv_get_boot_hartid(struct riscv_efi_boot_protocol *this,
|
||
|
|
efi_uintn_t *boot_hartid)
|
||
|
|
{
|
||
|
|
EFI_ENTRY("%p, %p", this, boot_hartid);
|
||
|
|
|
||
|
|
if (this != &riscv_efi_boot_prot || !boot_hartid)
|
||
|
|
return EFI_INVALID_PARAMETER;
|
||
|
|
|
||
|
|
*boot_hartid = gd->arch.boot_hart;
|
||
|
|
|
||
|
|
return EFI_EXIT(EFI_SUCCESS);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct riscv_efi_boot_protocol riscv_efi_boot_prot = {
|
||
|
|
.revision = RISCV_EFI_BOOT_PROTOCOL_REVISION,
|
||
|
|
.get_boot_hartid = efi_riscv_get_boot_hartid
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* efi_riscv_register() - register RISCV_EFI_BOOT_PROTOCOL
|
||
|
|
*
|
||
|
|
* Return: status code
|
||
|
|
*/
|
||
|
|
efi_status_t efi_riscv_register(void)
|
||
|
|
{
|
||
|
|
efi_status_t ret = EFI_SUCCESS;
|
||
|
|
|
||
|
|
ret = efi_add_protocol(efi_root, &efi_guid_riscv_boot_protocol,
|
||
|
|
(void *)&riscv_efi_boot_prot);
|
||
|
|
if (ret != EFI_SUCCESS)
|
||
|
|
log_err("Cannot install RISCV_EFI_BOOT_PROTOCOL\n");
|
||
|
|
return ret;
|
||
|
|
}
|