mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
make the generated code easrier to understand
This commit is contained in:
Li-Ta Lo
parent
0d4ad53574
commit
2ddaff8a80
1 changed files with 88 additions and 87 deletions
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@ -1,6 +1,6 @@
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/* getpir.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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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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@ -22,98 +22,99 @@ unsigned short ts;
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int calc_checksum() {
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long sum=0,i,j;
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u8 *addr,sum2=0,data;
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long sum=0,i,j;
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u8 *addr,sum2=0,data;
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addr= (u8 *) &rt;
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for (i=0;i<sizeof(struct irq_routing_table);i++) sum2 += addr[i];
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for (i=0;i<ts;i++) {
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addr= (u8 *) &se_arr[i];
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for (j=0;j<sizeof(struct irq_info);j++) sum2+=addr[j];
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}
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return(sum2);
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addr= (u8 *) &rt;
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for (i=0;i<sizeof(struct irq_routing_table);i++) sum2 += addr[i];
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for (i=0;i<ts;i++) {
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addr= (u8 *) &se_arr[i];
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for (j=0;j<sizeof(struct irq_info);j++) sum2+=addr[j];
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}
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return(sum2);
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}
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main () {
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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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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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if (getuid()) { perror("Run me as root, I need access to /dev/mem"); exit(1);}
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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",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",rt.version,rt.size);
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if (rt.version!=PIRQ_VERS) {printf("Invalid version\n");valid=0;}
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if (rt.size<32) {printf(" Invalid table size\n"); valid=0;}
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if (rt.size%16) {printf (" Invalid table size (not a multiple of 16)\n"); valid=0;}
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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=fread(&se_arr[i],1,16,fmem);
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count=count+rcount;
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if (getuid()) { perror("Run me as root, I need access to /dev/mem"); exit(1);}
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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",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",rt.version,rt.size);
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if (rt.version!=PIRQ_VERS) {printf("Invalid version\n");valid=0;}
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if (rt.size<32) {printf(" Invalid table size\n"); valid=0;}
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if (rt.size%16) {printf (" Invalid table size (not a multiple of 16)\n"); valid=0;}
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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=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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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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if (!calc_checksum()) printf("Checksum is ok!\n");
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printf("Closing memory\n");
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fclose(fmem);
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} while (rcount>0);
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if (!calc_checksum()) 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) {printf ("No table for you...\n");return(0);}
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if (!print) {printf ("No table for you...\n");return(0);}
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printf("Creating irq_tables.c .....\n");
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fpir=fopen("irq_tables.c","w");
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if (!fpir) {printf("Failed creating file!\n");exit(2);}
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printf("Creating irq_tables.c .....\n");
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fpir=fopen("irq_tables.c","w");
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if (!fpir) {printf("Failed creating file!\n");exit(2);}
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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",ts,ts);
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fprintf(fpir,"\t%#x, /* Where the interrupt router lies (bus) */\n",rt.rtr_bus);
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fprintf(fpir,"\t%#x, /* Where the interrupt router lies (dev) */\n",rt.rtr_devfn);
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fprintf(fpir,"\t%#x, /* IRQs devoted exclusively to PCI usage */\n",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",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",rt.checksum);
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fprintf(fpir,"\t{\n");
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for (i=0;i<ts;i++) {
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fprintf(fpir,"\t\t{%#x,(%#x<<3)|%#x, {{%#x, %#x}, {%#x, %#x}, {%#x, %#x}, {%#x, %#x}}, %#x, %#x},\n",
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se_arr[i].bus, se_arr[i].devfn>>3, se_arr[i].devfn&7,
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se_arr[i].irq[0].link, 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, se_arr[i].irq[2].bitmap,
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se_arr[i].irq[3].link, 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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fclose(fpir);
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printf("Done, you can move the file to the LinuxBios tree now.\n");
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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",ts,ts);
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fprintf(fpir,"\t0x%02x, /* Where the interrupt router lies (bus) */\n",rt.rtr_bus);
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fprintf(fpir,"\t(0x%02x<<3)|0x%01x, /* Where the interrupt router lies (dev) */\n",rt.rtr_devfn>>3, rt.rtr_devfn&7);
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fprintf(fpir,"\t%#x, /* IRQs devoted exclusively to PCI usage */\n",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",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",rt.checksum);
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fprintf(fpir,"\t{\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, se_arr[i].devfn&7,
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se_arr[i].irq[0].link, 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, se_arr[i].irq[2].bitmap,
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se_arr[i].irq[3].link, 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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fclose(fpir);
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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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