From 9c2255c66c20cd90f39cc08c1220d93222d5d580 Mon Sep 17 00:00:00 2001 From: Nikolay Petukhov Date: Sat, 29 Mar 2008 16:59:27 +0000 Subject: Now coreboot performs IRQ routing for some boards. You can see this by executing commands like this: grep -r pci_assign_irqs coreboot/src/* This basically AMD/LX based boards: pcengines/alix1c, digitallogic/msm800sev, artecgroup/dbe61, amd/norwich, amd/db800. Also for AMD/GX1 based boards need a patch [http://www.pengutronix.de/software/ptxdist/temporary-src/references/geode-5530.patch] for the right IRQ setup. AMD/GX1 based boards is: advantech/pcm-5820, asi/mb_5blmp, axus/tc320, bcom/winnet100, eaglelion/5bcm, iei/nova4899r, iei/juki-511p. I have two ideas. 1. Delete duplicate code from AMD/LX based boards. 2. Add IRQ routing for AMD/GX1 boards in coreboot. The pirq.patch for IRQ routing logically consist from of two parts: First part of pirq.patch independent from type chipsets and assign IRQ for ever PCI device. It part based on AMD/LX write_pirq_routing_table() function. Second part of pirq.patch depends of type chipset and set PIRQx lines in interrupt router. This part supports only CS5530/5536 interrupt routers. IRQ routing functionality is included through PIRQ_ROUTE in Config.lb. Tested on iei/juki-511p(cs5530a), iei/pcisa-lx(cs5536) and also on TeleVideo TC7020, see http://www.coreboot.org/pipermail/coreboot/2007-December/027973.html. Signed-off-by: Nikolay Petukhov Acked-by: Uwe Hermann git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3196 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/southbridge/amd/cs5530/Config.lb | 1 + src/southbridge/amd/cs5530/cs5530_pirq.c | 39 ++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) create mode 100644 src/southbridge/amd/cs5530/cs5530_pirq.c (limited to 'src/southbridge/amd/cs5530') diff --git a/src/southbridge/amd/cs5530/Config.lb b/src/southbridge/amd/cs5530/Config.lb index 8028f756b3..9a3ae5feb3 100644 --- a/src/southbridge/amd/cs5530/Config.lb +++ b/src/southbridge/amd/cs5530/Config.lb @@ -23,3 +23,4 @@ driver cs5530.o driver cs5530_isa.o driver cs5530_ide.o driver cs5530_vga.o +driver cs5530_pirq.o diff --git a/src/southbridge/amd/cs5530/cs5530_pirq.c b/src/southbridge/amd/cs5530/cs5530_pirq.c new file mode 100644 index 0000000000..edae7c9ab6 --- /dev/null +++ b/src/southbridge/amd/cs5530/cs5530_pirq.c @@ -0,0 +1,39 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Nikolay Petukhov + * + * 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 + +#if (PIRQ_ROUTE==1 && HAVE_PIRQ_TABLE==1) +void pirq_assign_irqs(const unsigned char pIntAtoD[4]) +{ + device_t pdev; + + pdev = dev_find_device(PCI_VENDOR_ID_CYRIX, + PCI_DEVICE_ID_CYRIX_5530_LEGACY, 0); + + if (pdev) { + pci_write_config8(pdev, 0x5c, (pIntAtoD[1] << 4 | pIntAtoD[0])); + pci_write_config8(pdev, 0x5d, (pIntAtoD[3] << 4 | pIntAtoD[2])); + } +} +#endif -- cgit v1.2.3