From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- arch/powerpc/platforms/44x/misc_44x.S | 46 +++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 arch/powerpc/platforms/44x/misc_44x.S (limited to 'arch/powerpc/platforms/44x/misc_44x.S') diff --git a/arch/powerpc/platforms/44x/misc_44x.S b/arch/powerpc/platforms/44x/misc_44x.S new file mode 100644 index 00000000..dc12b800 --- /dev/null +++ b/arch/powerpc/platforms/44x/misc_44x.S @@ -0,0 +1,46 @@ +/* + * This file contains miscellaneous low-level functions for PPC 44x. + * Copyright 2007 David Gibson , IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +#include +#include + + .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 -- cgit v1.3.1