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https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* checkpir.c : This software is released under GPL
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For Linuxbios use only
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Aug 26 2001 , Nikolai Vladychevski, <niko@isl.net.mx>
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include "pci.h"
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#include "pirq_routing.h"
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#include "types.h"
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#include "kmalloc.h"
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#define PIRQ_SIGNATURE (('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
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#define PIRQ_VERS 0x0100
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//extern struct irq_routing_table intel_irq_routing_table;
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struct irq_info se_arr[50];
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struct irq_routing_table *rt;
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int calc_checksum(struct irq_routing_table *rt) {
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long sum=0,i;
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u8 *addr,sum2=0;
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addr= (u8 *) rt;
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for (i=0;i<rt->size;i++) sum2 += addr[i];
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return(sum2);
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}
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main () {
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u8 sum,newsum;
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rt=(struct irq_routing_table*) &intel_irq_routing_table;
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sum=calc_checksum(rt);
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printf("Validating checksum, file: irq_tables.c that was in ./ at compile time...\n");
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printf("(no other tests are done)\n");
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if (!sum) { printf("Checksum for IRQ Routing table is ok. You can use it in LinuxBios now\n"); }
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else {
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newsum=rt->checksum-sum;
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printf("BAD CHECKSUM for IRQ Routing table !!!!\n");
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printf("If you want to make it valid, change the checksum to: %#x\n",newsum);
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}
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}
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