seperate checksum and code generating code.
use mmap instead of file io git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1504 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Li-Ta Lo
parent
815a803164
commit
6463ae7f1b
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@ -5,20 +5,25 @@ LINUXBIOSROOT=../..
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INCLUDEPATH=$(LINUXBIOSROOT)/src/arch/i386/include
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INCLUDE2=$(LINUXBIOSROOT)/src/include
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getpir: getpir.c
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gcc -o getpir -I$(INCLUDEPATH) -I$(INCLUDE2) getpir.c
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getpir: getpir.c checksum.o code_gen.o
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gcc -o getpir -I$(INCLUDEPATH) -I$(INCLUDE2) getpir.c checksum.o code_gen.o
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code_gen.o: code_gen.c
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gcc -c -I$(INCLUDEPATH) -I$(INCLUDE2) code_gen.c
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all: getpir checkpir
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checkpir: checkpir.c irq_tables.o
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gcc -o checkpir -I$(INCLUDEPATH) -I$(INCLUDE2) irq_tables.o checkpir.c
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checkpir: checkpir.c checksum.o irq_tables.o
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gcc -o checkpir -I$(INCLUDEPATH) -I$(INCLUDE2) irq_tables.o checksum.o checkpir.c
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checksum.o: checksum.c
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gcc -c -I$(INCLUDEPATH) -I$(INCLUDE2) checksum.c
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irq_tables.o: irq_tables.c
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gcc -c -I$(INCLUDEPATH) -I$(INCLUDE2) irq_tables.c
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clean:
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rm -f irq_tables.o getpir checkpir *~
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rm -f getpir checkpir *.o *~
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cleantable:
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rm -f irq_table.o
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@ -4,24 +4,12 @@
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*/
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#include <stdio.h>
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#include <device/pci.h>
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#include <arch/pirq_routing.h>
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struct irq_info se_arr[50];
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#include "checksum.h"
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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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@ -0,0 +1,14 @@
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#include <arch/pirq_routing.h>
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#include "checksum.h"
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int calc_checksum(struct irq_routing_table *rt)
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{
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long i;
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uint8_t *addr, sum = 0;
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addr = (uint8_t *) rt;
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for (i = 0; i < rt->size; i++)
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sum += addr[i];
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return (sum);
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}
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@ -0,0 +1,6 @@
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#ifndef __CHECKSUM_H__
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#define __CHECKSUM_H__
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extern int calc_checksum(struct irq_routing_table *rt);
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#endif /* __CHECKSUN_H__ */
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@ -0,0 +1,55 @@
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#include <stdio.h>
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#include <arch/pirq_routing.h>
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static char *preamble[] = {
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"/* This file was generated by getpir.c, do not modify! \n (but if you do, please run checkpir on it to verify)\n",
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" * Contains the IRQ Routing Table dumped directly from your memory, which BIOS sets up\n",
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" *\n",
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" * Documentation at : http://www.microsoft.com/hwdev/busbios/PCIIRQ.HTM\n*/\n\n",
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"#include <arch/pirq_routing.h>\n\n",
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"const struct irq_routing_table intel_irq_routing_table = {\n",
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"\tPIRQ_SIGNATURE, /* u32 signature */\n",
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"\tPIRQ_VERSION, /* u16 version */\n",
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0
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};
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void code_gen(FILE * fpir, struct irq_routing_table *rt)
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{
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char **code = preamble;
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struct irq_info *se_arr = (struct irq_info *) ((char *) rt + 32);
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int i, ts = (rt->size - 32) / 16;
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while (*code)
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fprintf(fpir, "%s", *code++);
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fprintf(fpir, "\t32+16*%d, /* there can be total %d devices on the bus */\n",
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ts, ts);
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fprintf(fpir, "\t0x%02x, /* Where the interrupt router lies (bus) */\n",
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rt->rtr_bus);
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fprintf(fpir, "\t(0x%02x<<3)|0x%01x, /* Where the interrupt router lies (dev) */\n",
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rt->rtr_devfn >> 3, rt->rtr_devfn & 7);
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fprintf(fpir, "\t%#x, /* IRQs devoted exclusively to PCI usage */\n",
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rt->exclusive_irqs);
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fprintf(fpir, "\t%#x, /* Vendor */\n", rt->rtr_vendor);
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fprintf(fpir, "\t%#x, /* Device */\n", rt->rtr_device);
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fprintf(fpir, "\t%#x, /* Crap (miniport) */\n",
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rt->miniport_data);
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fprintf(fpir, "\t{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */\n");
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fprintf(fpir, "\t%#x, /* u8 checksum , this hase to set to some value that would give 0 after the sum of all bytes for this structure (including checksum) */\n",
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rt->checksum);
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fprintf(fpir, "\t{\n");
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fprintf(fpir, "\t\t/* bus, dev|fn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu */\n");
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for (i = 0; i < ts; i++) {
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fprintf(fpir, "\t\t{0x%02x,(0x%02x<<3)|0x%01x, {{0x%02x, 0x%04x}, {0x%02x, 0x%04x}, {0x%02x, 0x%04x}, {0x%02x, 0x0%04x}}, 0x%x, 0x%x},\n",
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(se_arr+i)->bus, (se_arr+i)->devfn >> 3,
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(se_arr+i)->devfn & 7, (se_arr+i)->irq[0].link,
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(se_arr+i)->irq[0].bitmap, (se_arr+i)->irq[1].link,
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(se_arr+i)->irq[1].bitmap, (se_arr+i)->irq[2].link,
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(se_arr+i)->irq[2].bitmap, (se_arr+i)->irq[3].link,
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(se_arr+i)->irq[3].bitmap, (se_arr+i)->slot,
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(se_arr+i)->rfu);
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}
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fprintf(fpir, "\t}\n");
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fprintf(fpir, "};\n");
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}
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@ -4,101 +4,50 @@
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*/
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#include <stdio.h>
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#include <sys/mman.h>
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#include <device/pci.h>
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#include <arch/pirq_routing.h>
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struct irq_info se_arr[50];
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struct irq_routing_table rt;
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unsigned short ts;
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#define O_RDONLY 0x00
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int calc_checksum()
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static struct irq_routing_table *probe_table(int fd_mem)
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{
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long sum = 0, i, j;
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uint8_t *addr, sum2 = 0, data;
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char *ptr, signature[] = "$PIR";
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struct irq_routing_table *rt;
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addr = (uint8_t *) & rt;
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for (i = 0; i < sizeof(struct irq_routing_table); i++)
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sum2 += addr[i];
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for (i = 0; i < ts; i++) {
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addr = (uint8_t *) & se_arr[i];
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for (j = 0; j < sizeof(struct irq_info); j++)
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sum2 += addr[j];
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ptr = mmap(0, 0x10000, PROT_READ, MAP_SHARED,
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fd_mem, (off_t) 0xf0000);
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rt = (struct irq_routing_table *) memmem(ptr, 0xFFFF, signature, 4);
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if (rt != NULL) {
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printf("Found PCI IRQ Routing table signature at 0x%04x of system memory\n",
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(char *) rt - ptr + 0xf0000);
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} else {
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printf("No PCI IRQ Routing table signature in the memory\n");
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exit(1);
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}
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return (sum2);
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return rt;
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}
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main()
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{
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FILE *fmem, *fpir;
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size_t rcount = 0;
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unsigned long b, p, pir = PIRQ_SIGNATURE;
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unsigned long count;
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int i, valid = 1, print = 0;
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char cksum = 0;
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unsigned char *ptr;
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int fd_mem;
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FILE *fpir;
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struct irq_routing_table *rt;
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if (getuid()) {
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perror("Run me as root, I need access to /dev/mem");
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exit(1);
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}
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fd_mem = open("/dev/mem", O_RDONLY);
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printf("Opening memory...\n");
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fmem = fopen("/dev/mem", "r");
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do {
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rcount = fread(&b, 1, 4, fmem);
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if (rcount > 0) {
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if (b == pir) {
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valid = 1;
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printf("Found PCI IRQ Routing table signature at %x bytes from top of the memory\nValidating../\n",
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count);
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rt.signature = PIRQ_SIGNATURE;
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ptr = (char *) &rt;
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ptr = ptr + 4; // signature was read, advance 4 bytes
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rcount = fread(ptr, 1, sizeof(struct irq_routing_table) - 4, fmem);
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count = count + rcount;
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printf("Version is:%d Table size:%d\n",
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rt.version, rt.size);
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if (rt.version != PIRQ_VERSION) {
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printf("Invalid version\n");
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valid = 0;
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}
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if (rt.size < 32) {
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printf(" Invalid table size\n");
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valid = 0;
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}
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if (rt.size % 16) {
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printf(" Invalid table size (not a multiple of 16)\n");
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valid = 0;
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}
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if (valid) {
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// read slot entries
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ts = (rt.size - 32) / 16;
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printf("Reading %d slot entries...\n", ts);
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for (i = 0; i < ts; i++) {
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rcount =
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fread(&se_arr[i], 1, 16, fmem);
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count = count + rcount;
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}
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print = 1;
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break;
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}
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} else {
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count = count + rcount;
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}
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}
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} while (rcount > 0);
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printf("Probing PIRQ table in memory\n");
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rt = probe_table(fd_mem);
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if (!calc_checksum())
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printf("Validating..\n");
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if (!calc_checksum(rt))
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printf("Checksum is ok!\n");
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printf("Closing memory\n");
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fclose(fmem);
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if (!print) {
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printf("No table for you...\n");
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return (0);
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}
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printf("Creating irq_tables.c .....\n");
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fpir = fopen("irq_tables.c", "w");
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@ -106,43 +55,10 @@ main()
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printf("Failed creating file!\n");
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exit(2);
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}
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fprintf(fpir, "/* This file was generated by getpir.c, do not modify! \n (but if you do, please run checkpir on it to verify)\n");
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fprintf(fpir, " Contains the IRQ Routing Table dumped directly from your memory , wich BIOS sets up\n\n");
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fprintf(fpir, " Documentation at : http://www.microsoft.com/hwdev/busbios/PCIIRQ.HTM\n*/\n\n");
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fprintf(fpir, "#include <arch/pirq_routing.h>\n\n");
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fprintf(fpir, "const struct irq_routing_table intel_irq_routing_table = {\n");
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fprintf(fpir, "\tPIRQ_SIGNATURE, /* u32 signature */\n");
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fprintf(fpir, "\tPIRQ_VERSION, /* u16 version */\n");
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fprintf(fpir, "\t32+16*%d, /* there can be total %d devices on the bus */\n",
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ts, ts);
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fprintf(fpir, "\t0x%02x, /* Where the interrupt router lies (bus) */\n",
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rt.rtr_bus);
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fprintf(fpir, "\t(0x%02x<<3)|0x%01x, /* Where the interrupt router lies (dev) */\n",
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rt.rtr_devfn >> 3, rt.rtr_devfn & 7);
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fprintf(fpir, "\t%#x, /* IRQs devoted exclusively to PCI usage */\n",
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rt.exclusive_irqs);
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fprintf(fpir, "\t%#x, /* Vendor */\n", rt.rtr_vendor);
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fprintf(fpir, "\t%#x, /* Device */\n", rt.rtr_device);
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fprintf(fpir, "\t%#x, /* Crap (miniport) */\n",
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rt.miniport_data);
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fprintf(fpir, "\t{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */\n");
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fprintf(fpir, "\t%#x, /* u8 checksum , this hase to set to some value that would give 0 after the sum of all bytes for this structure (including checksum) */\n",
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rt.checksum);
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fprintf(fpir, "\t{\n");
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fprintf(fpir, "\t\t/* bus, dev|fn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu */\n");
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for (i = 0; i < ts; i++) {
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fprintf(fpir, "\t\t{0x%02x,(0x%02x<<3)|0x%01x, {{0x%02x, 0x%04x}, {0x%02x, 0x%04x}, {0x%02x, 0x%04x}, {0x%02x, 0x0%04x}}, 0x%x, 0x%x},\n",
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se_arr[i].bus, se_arr[i].devfn >> 3,
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se_arr[i].devfn & 7, se_arr[i].irq[0].link,
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se_arr[i].irq[0].bitmap, se_arr[i].irq[1].link,
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se_arr[i].irq[1].bitmap, se_arr[i].irq[2].link,
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se_arr[i].irq[2].bitmap, se_arr[i].irq[3].link,
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se_arr[i].irq[3].bitmap, se_arr[i].slot,
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se_arr[i].rfu);
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}
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fprintf(fpir, "\t}\n");
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fprintf(fpir, "};\n");
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code_gen(fpir, rt);
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fclose(fpir);
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close(fd_mem);
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printf("Done, you can move the file to the LinuxBios tree now.\n");
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}
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