mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
fcf66e3605
and seems to be working. Signed-off-by: Corey Osgood <corey.osgood@gmail.com> Acked-by: Myles Watson <mylesgw@gmail.com> git-svn-id: svn://coreboot.org/repository/coreboot-v3@1164 f3766cd6-281f-0410-b1cd-43a5c92072e9
109 lines
3 KiB
C
109 lines
3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2000 Ollie Lo, Silicon Integrated Systems
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* Copyright (C) 2000,2008 Ronald G. Minnich <rminnich@gmail.com>
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* Copyright (C) 2001 Eric Biederman
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* Copyright (C) 2002 Andrew Ip
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <types.h>
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#include <string.h>
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#include <lar.h>
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#include <console.h>
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#include <device/device.h>
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#include <tables.h>
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#include <arch/x86/pirq_routing.h>
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static void check_pirq_routing_table(struct irq_routing_table *rt)
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{
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u8 *addr = (u8 *)rt;
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u8 sum=0;
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int i;
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printk(BIOS_INFO, "Checking IRQ routing table consistency...\n");
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for (i = 0; i < rt->size; i++)
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sum += addr[i];
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printk(BIOS_DEBUG, "%s() - irq_routing_table located at: 0x%p\n",
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__func__, addr);
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sum = rt->checksum - sum;
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if (sum != rt->checksum) {
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printk(BIOS_WARNING, "%s:%6d:%s() - "
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"checksum is: 0x%02x but should be: 0x%02x\n",
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__FILE__, __LINE__, __func__, rt->checksum, sum);
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rt->checksum = sum;
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}
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if (rt->signature != PIRQ_SIGNATURE || rt->version != PIRQ_VERSION ||
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rt->size % 16 ) {
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printk(BIOS_WARNING, "%s:%6d:%s() - "
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"Interrupt Routing Table not valid\n",
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__FILE__, __LINE__, __func__);
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return;
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}
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sum = 0;
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for (i=0; i<rt->size; i++)
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sum += addr[i];
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if (sum) {
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printk(BIOS_WARNING, "%s:%6d:%s() - "
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"checksum error in irq routing table\n",
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__FILE__, __LINE__, __func__);
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}
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printk(BIOS_INFO, "done.\n");
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}
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static int verify_copy_pirq_routing_table(unsigned long addr)
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{
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int i;
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u8 *rt_orig, *rt_curr;
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rt_curr = (u8*)addr;
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rt_orig = (u8*)&intel_irq_routing_table;
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printk(BIOS_INFO, "Verifing copy of IRQ routing tables at 0x%lux...", addr);
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for (i = 0; i < intel_irq_routing_table.size; i++) {
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if (*(rt_curr + i) != *(rt_orig + i)) {
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printk(BIOS_INFO, "failed\n");
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return -1;
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}
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}
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printk(BIOS_INFO, "done\n");
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check_pirq_routing_table((struct irq_routing_table *)addr);
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return 0;
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}
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unsigned long copy_pirq_routing_table(unsigned long addr)
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{
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/* Align the table to be 16 byte aligned. */
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addr += 15;
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addr &= ~15;
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/* This table must be betweeen 0xf0000 & 0x100000 */
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printk(BIOS_INFO, "Copying IRQ routing tables to 0x%lux...", addr);
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memcpy((void *)addr, &intel_irq_routing_table, intel_irq_routing_table.size);
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printk(BIOS_INFO, "done.\n");
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verify_copy_pirq_routing_table(addr);
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return addr + intel_irq_routing_table.size;
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}
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