49 lines
1.1 KiB
C
49 lines
1.1 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 <device/pci.h>
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#include <pirq_routing.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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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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{
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long sum = 0, i;
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uint8_t *addr, sum2 = 0;
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addr = (uint8_t *) rt;
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for (i = 0; i < rt->size; i++)
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sum2 += addr[i];
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return (sum2);
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}
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main()
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{
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uint8_t 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) {
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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",
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newsum);
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}
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}
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