628c3bb40e
Add basic boot, setup and reset routines for LoongArch. Now, LoongArch machines use UEFI-based firmware. The firmware passes configuration information to the kernel via ACPI and DMI/SMBIOS. Currently an existing interface between the kernel and the bootloader is implemented. Kernel gets 2 values from the bootloader, passed in registers a0 and a1; a0 is an "EFI boot flag" distinguishing UEFI and non-UEFI firmware, while a1 is a pointer to an FDT with systable, memmap, cmdline and initrd information. The standard UEFI boot protocol (EFISTUB) will be added later. Cc: linux-efi@vger.kernel.org Cc: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: WANG Xuerui <git@xen0n.name> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Co-developed-by: Yun Liu <liuyun@loongson.cn> Signed-off-by: Yun Liu <liuyun@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
21 lines
566 B
C
21 lines
566 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#ifndef _LOONGARCH_SETUP_H
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#define _LOONGARCH_SETUP_H
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#include <linux/types.h>
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#include <uapi/asm/setup.h>
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#define VECSIZE 0x200
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extern unsigned long eentry;
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extern unsigned long tlbrentry;
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extern void cpu_cache_init(void);
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extern void per_cpu_trap_init(int cpu);
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extern void set_handler(unsigned long offset, void *addr, unsigned long len);
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extern void set_merr_handler(unsigned long offset, void *addr, unsigned long len);
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#endif /* __SETUP_H */
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