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32x: drc: mmap dram+rom for direct dereference

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@851 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz 2010-01-02 21:03:04 +00:00
parent 5ff8efa9e5
commit 997b2e4ff9
1 changed files with 19 additions and 0 deletions
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19
linux/plat.c
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@ -4,6 +4,7 @@
#include <sys/time.h> #include <sys/time.h>
#include <time.h> #include <time.h>
#include <unistd.h> #include <unistd.h>
#include <sys/mman.h>
#include "../common/plat.h" #include "../common/plat.h"
@ -108,3 +109,21 @@ int plat_wait_event(int *fds_hnds, int count, int timeout_ms)
return ret; return ret;
} }
void *plat_mmap(unsigned long addr, size_t size)
{
void *req, *ret;
req = (void *)addr;
ret = mmap(req, size, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0);
if (ret == MAP_FAILED)
return NULL;
if (ret != req)
printf("warning: mmaped to %p, requested %p\n", ret, req);
return ret;
}
void plat_munmap(void *ptr, size_t size)
{
munmap(ptr, size);
}