entry.S

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * purgatory: Runs between two kernels
 *
 * Copyright (C) 2022 Huawei Technologies Co, Ltd.
 *
 * Author: Li Zhengyu ([email protected])
 *
 */
#include <asm/asm.h>
#include <linux/linkage.h>

.text

.align	2
SYM_CODE_START(purgatory_start)

	lla	sp, .Lstack
	mv	s0, a0	/* The hartid of the current hart */
	mv	s1, a1	/* Phys address of the FDT image */

	jal	purgatory

	/* Start new image. */
	mv	a0, s0
	mv	a1, s1
	ld	a2, riscv_kernel_entry
	jr	a2
SYM_CODE_END(purgatory_start)

.align 4
	.rept	256
	.quad	0
	.endr
.Lstack:

.data

.align LGREG
SYM_DATA(riscv_kernel_entry, .quad 0)

.end