From 7916f4cef62bf032af86368a9df45db833d09b79 Mon Sep 17 00:00:00 2001 From: Kyösti Mälkki Date: Thu, 9 Feb 2012 16:07:41 +0200 Subject: AMD Geode cpus: apply un-written naming rules MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Kconfig directives to select chip drivers for compile literally match the chip directory names capitalized and underscored. Rename directories and Kconfig as follows: model_lx -> geode_lx model_gx1 -> geode_gx1 model_gx2 -> geode_gx2 Change-Id: Ib8bf1e758b88f9efed1cf8b11c76b796388e7147 Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/613 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/cpu/amd/geode_lx/cpubug.c | 91 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 src/cpu/amd/geode_lx/cpubug.c (limited to 'src/cpu/amd/geode_lx/cpubug.c') diff --git a/src/cpu/amd/geode_lx/cpubug.c b/src/cpu/amd/geode_lx/cpubug.c new file mode 100644 index 0000000000..e3b6e511ee --- /dev/null +++ b/src/cpu/amd/geode_lx/cpubug.c @@ -0,0 +1,91 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2006 Indrek Kruusa + * Copyright (C) 2006 Ronald G. Minnich + * Copyright (C) 2007 Advanced Micro Devices, Inc. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/************************************************************************** + * + * pcideadlock + * + * Bugtool #465 and #609 + * PCI cache deadlock + * There is also fix code in cache and PCI functions. This bug is very is pervasive. + * + **************************************************************************/ +static void pcideadlock(void) +{ + msr_t msr; + + /* + * forces serialization of all load misses. Setting this bit prevents the + * DM pipe from backing up if a read request has to be held up waiting + * for PCI writes to complete. + */ + msr = rdmsr(CPU_DM_CONFIG0); + msr.lo |= DM_CONFIG0_LOWER_MISSER_SET; + wrmsr(CPU_DM_CONFIG0, msr); + + /* write serialize memory hole to PCI. Need to unWS when something is + * shadowed regardless of cachablility. + */ + msr.lo = 0x021212121; + msr.hi = 0x021212121; + wrmsr(CPU_RCONF_A0_BF, msr); + wrmsr(CPU_RCONF_C0_DF, msr); + wrmsr(CPU_RCONF_E0_FF, msr); +} + +/****************************************************************************/ +/***/ +/** DisableMemoryReorder*/ +/***/ +/** PBZ 3659:*/ +/** The MC reordered transactions incorrectly and breaks coherency.*/ +/** Disable reording and take a potential performance hit.*/ +/** This is safe to do here and not in MC init since there is nothing*/ +/** to maintain coherency with and the cache is not enabled yet.*/ +/***/ +/****************************************************************************/ +static void disablememoryreadorder(void) +{ + msr_t msr; + + msr = rdmsr(MC_CF8F_DATA); + msr.hi |= CF8F_UPPER_REORDER_DIS_SET; + wrmsr(MC_CF8F_DATA, msr); +} + +/* For cpu version C3. Should be the only released version */ +void cpubug(void) +{ + pcideadlock(); + disablememoryreadorder(); + printk(BIOS_DEBUG, "Done cpubug fixes \n"); +} -- cgit v1.2.3