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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2000 Ollie Lo, Silicon Integrated Systems
* Copyright (C) 2000,2008 Ronald G. Minnich <rminnich@gmail.com>
* Copyright (C) 2001 Eric Biederman
* Copyright (C) 2002 Andrew Ip
*
* 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 <types.h>
#include <string.h>
#include <lar.h>
#include <console.h>
#include <device/device.h>
#include <tables.h>
#include <pirq_routing.h>
static void check_pirq_routing_table(struct irq_routing_table *rt)
{
u8 *addr = (u8 *)rt;
u8 sum=0;
int i;
printk(BIOS_INFO, "Checking IRQ routing table consistency...\n");
for (i = 0; i < rt->size; i++)
sum += addr[i];
printk(BIOS_DEBUG, "%s() - irq_routing_table located at: 0x%p\n",
__FUNCTION__, addr);
sum = rt->checksum - sum;
if (sum != rt->checksum) {
printk(BIOS_WARNING, "%s:%6d:%s() - "
"checksum is: 0x%02x but should be: 0x%02x\n",
__FILE__, __LINE__, __FUNCTION__, rt->checksum, sum);
rt->checksum = sum;
}
if (rt->signature != PIRQ_SIGNATURE || rt->version != PIRQ_VERSION ||
rt->size % 16 ) {
printk(BIOS_WARNING, "%s:%6d:%s() - "
"Interrupt Routing Table not valid\n",
__FILE__, __LINE__, __FUNCTION__);
return;
}
sum = 0;
for (i=0; i<rt->size; i++)
sum += addr[i];
if (sum) {
printk(BIOS_WARNING, "%s:%6d:%s() - "
"checksum error in irq routing table\n",
__FILE__, __LINE__, __FUNCTION__);
}
printk(BIOS_INFO, "done.\n");
}
static int verify_copy_pirq_routing_table(unsigned long addr)
{
int i;
u8 *rt_orig, *rt_curr;
rt_curr = (u8*)addr;
rt_orig = (u8*)&intel_irq_routing_table;
printk(BIOS_INFO, "Verifing copy of IRQ routing tables at 0x%lux...", addr);
for (i = 0; i < intel_irq_routing_table.size; i++) {
if (*(rt_curr + i) != *(rt_orig + i)) {
printk(BIOS_INFO, "failed\n");
return -1;
}
}
printk(BIOS_INFO, "done\n");
check_pirq_routing_table((struct irq_routing_table *)addr);
return 0;
}
unsigned long copy_pirq_routing_table(unsigned long addr)
{
/* Align the table to be 16 byte aligned. */
addr += 15;
addr &= ~15;
/* This table must be betweeen 0xf0000 & 0x100000 */
printk(BIOS_INFO, "Copying IRQ routing tables to 0x%lux...", addr);
memcpy((void *)addr, &intel_irq_routing_table, intel_irq_routing_table.size);
printk(BIOS_INFO, "done.\n");
verify_copy_pirq_routing_table(addr);
return addr + intel_irq_routing_table.size;
}
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