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refactoring for Wiz port; random cleanups

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@703 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-07-15 16:13:43 +00:00
parent 9c0d458840
commit d572cbad98
18 changed files with 531 additions and 492 deletions
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78
gp2x/soc.c Normal file
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#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include "soc.h"
#include "../common/emu.h"
gp2x_soc_t gp2x_soc = -1;
gp2x_soc_t soc_detect(void)
{
volatile unsigned short *memregs;
volatile unsigned int *memregl;
int pollux_chipname[0x30/4 + 1];
char *pollux_chipname_c = (char *)pollux_chipname;
gp2x_soc_t ret = -1;
int memdev;
int i;
memdev = open("/dev/mem", O_RDONLY);
if (memdev == -1)
{
perror("open(/dev/mem)");
return -1;
}
memregs = mmap(0, 0x20000, PROT_READ, MAP_SHARED, memdev, 0xc0000000);
if (memregs == MAP_FAILED)
{
perror("mmap(memregs)");
close(memdev);
return -1;
}
memregl = (volatile void *)memregs;
if (memregs[0x1836>>1] == 0x2330)
{
printf("looks like this is MMSP2\n");
ret = SOCID_MMSP2;
goto out;
}
/* perform word reads. Byte reads might also work,
* but we don't want to play with that. */
for (i = 0; i < 0x30; i += 4)
{
pollux_chipname[i >> 2] = memregl[(0x1f810 + i) >> 2];
}
pollux_chipname_c[0x30] = 0;
for (i = 0; i < 0x30; i++)
{
unsigned char c = pollux_chipname_c[i];
if (c < 0x20 || c > 0x7f)
goto not_pollux_like;
}
printf("found pollux-like id: \"%s\"\n", pollux_chipname_c);
if (strncmp(pollux_chipname_c, "MAGICEYES-LEAPFROG-LF1000", 25) ||
strncmp(pollux_chipname_c, "MAGICEYES-POLLUX", 16))
{
ret = SOCID_POLLUX;
goto out;
}
not_pollux_like:
out:
munmap((void *)memregs, 0x20000);
close(memdev);
gp2x_soc = ret;
return ret;
}