sravan/system76-coreboot
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Jeremy Jackson wrote:

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I'm guessing nobody has tried compiling it with 64bit userspace?

Patch makes it compile cleanly and stops a "SEGV instead of working"
issue.

I also added a few checks for errors on system calls.

Signed-off-by: Jeremy Jackson <jerj@coplanar.net>

Reworked and
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2602 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Jeremy Jackson
2007-04-11 18:44:42 +00:00
committed by Stefan Reinauer
parent 4880353e03
commit 46d65e85a1
8 changed files with 130 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
util/getpir/getpir.c
View File

@@ -1,14 +1,28 @@
/* getpir.c : This software is released under GPL
For Linuxbios use only
Aug 26 2001 , Nikolai Vladychevski, <niko@isl.net.mx>
*/
* For LinuxBIOS use only
* Aug 26 2001 , Nikolai Vladychevski, <niko@isl.net.mx>
* 2007.04.09 Jeremy Jackson <jerj@coplanar.net>
* updated for amd64 and general 64 bit portability
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <arch/pirq_routing.h>
#include "pirq_routing.h"
#include "checksum.h"
#include "code_gen.h"
#define O_RDONLY 0x00
#if defined (__sun) && (defined(__i386) || defined(__amd64))
# define MEM_DEV "/dev/xsvc"
#else
# define MEM_DEV "/dev/mem"
#endif
static struct irq_routing_table *probe_table(int fd_mem)
{
@@ -18,40 +32,53 @@ static struct irq_routing_table *probe_table(int fd_mem)
ptr = mmap(0, 0x10000, PROT_READ, MAP_SHARED,
fd_mem, (off_t) 0xf0000);
if (ptr == MAP_FAILED) {
perror("Mapping system memory failed: ");
exit(1);
}
rt = (struct irq_routing_table *) memmem(ptr, 0xFFFF, signature, 4);
if (rt != NULL) {
printf("Found PCI IRQ Routing table signature at 0x%04x of system memory\n",
(char *) rt - ptr + 0xf0000);
printf("Found PCI IRQ routing table signature at %p.\n",
(void *)((char *)rt - ptr + 0xf0000));
} else {
printf("No PCI IRQ Routing table signature in the memory\n");
printf("No PCI IRQ routing table signature found.\n");
exit(1);
}
return rt;
}
main()
int main(void)
{
int fd_mem;
struct irq_routing_table *rt;
if (getuid()) {
perror("Run me as root, I need access to /dev/mem");
fprintf(stderr, "Run me as root, I need access to " MEM_DEV ".\n");
}
fd_mem = open(MEM_DEV, O_RDONLY);
if (fd_mem < 0) {
perror("Could not open " MEM_DEV ":");
exit(1);
}
fd_mem = open("/dev/mem", O_RDONLY);
printf("Probing PIRQ table in memory\n");
printf("Probing PIRQ table in memory.\n");
rt = probe_table(fd_mem);
printf("Validating..\n");
printf("Validating... ");
if (!calc_checksum(rt))
printf("Checksum is ok!\n");
printf("checksum is ok.\n");
else
printf("checksum is wrong.\n");
printf("Creating irq_tables.c .....\n");
printf("Creating irq_tables.c ...\n");
code_gen("irq_tables.c", rt);
close(fd_mem);
printf("Done, you can move the file to the LinuxBios tree now.\n");
printf("Done, you can move the file to the LinuxBIOS tree now.\n");
return 0;
}