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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pm_wakeup.S (596B)

      1/* SPDX-License-Identifier: GPL-2.0
      2 *
      3 * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
      4 */
      5
      6#include <linux/linkage.h>
      7#include <cpu/mmu_context.h>
      8
      9/*
     10 * Kernel mode register usage:
     11 *	k0	scratch
     12 *	k1	scratch
     13 * For more details, please have a look at entry.S
     14 */
     15
     16#define k0	r0
     17#define k1	r1
     18
     19ENTRY(wakeup_start)
     20! clear STBY bit
     21	mov	#-126, k1
     22   	and	#127, k0
     23	mov.b	k0, @k1
     24! enable refresh
     25	mov.l	5f, k1
     26	mov.w	6f, k0
     27  	mov.w	k0, @k1
     28! jump to handler
     29	mov.l	4f, k1
     30	jmp	@k1
     31	 nop
     32
     33	.align	2
     344:	.long	handle_interrupt
     355:	.long	0xffffff68
     366:	.word	0x0524
     37
     38ENTRY(wakeup_end)
     39	nop