sevki
c9e1dba412
setup CI/CD for kernel development - added CodeQL for code scanning - every pr is built as an image and is available for 30days on https://oklinux.dev - tagged and released on github for now Signed-off-by: sevki <s@sevki.io>
41 lines
533 B
ArmAsm
41 lines
533 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* This file contains miscellaneous low-level functions for PPC 44x.
|
|
* Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
|
|
*/
|
|
|
|
#include <asm/reg.h>
|
|
#include <asm/ppc_asm.h>
|
|
|
|
.text
|
|
|
|
/*
|
|
* Do an IO access in AS1
|
|
*/
|
|
_GLOBAL(as1_readb)
|
|
mfmsr r7
|
|
ori r0,r7,MSR_DS
|
|
sync
|
|
mtmsr r0
|
|
sync
|
|
isync
|
|
lbz r3,0(r3)
|
|
sync
|
|
mtmsr r7
|
|
sync
|
|
isync
|
|
blr
|
|
|
|
_GLOBAL(as1_writeb)
|
|
mfmsr r7
|
|
ori r0,r7,MSR_DS
|
|
sync
|
|
mtmsr r0
|
|
sync
|
|
isync
|
|
stb r3,0(r4)
|
|
sync
|
|
mtmsr r7
|
|
sync
|
|
isync
|
|
blr
|