cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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entry.S (665B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * purgatory: Runs between two kernels
      4 *
      5 * Copyright (C) 2022 Huawei Technologies Co, Ltd.
      6 *
      7 * Author: Li Zhengyu (lizhengyu3@huawei.com)
      8 *
      9 */
     10
     11.macro	size, sym:req
     12	.size \sym, . - \sym
     13.endm
     14
     15.text
     16
     17.globl purgatory_start
     18purgatory_start:
     19
     20	lla	sp, .Lstack
     21	mv	s0, a0	/* The hartid of the current hart */
     22	mv	s1, a1	/* Phys address of the FDT image */
     23
     24	jal	purgatory
     25
     26	/* Start new image. */
     27	mv	a0, s0
     28	mv	a1, s1
     29	ld	a2, riscv_kernel_entry
     30	jr	a2
     31
     32size purgatory_start
     33
     34.align 4
     35	.rept	256
     36	.quad	0
     37	.endr
     38.Lstack:
     39
     40.data
     41
     42.globl riscv_kernel_entry
     43riscv_kernel_entry:
     44	.quad	0
     45size riscv_kernel_entry
     46
     47.end