0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached
*/
+#if 1
+void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed);
+void plat_munmap(void *ptr, size_t size);
+#else
+#define plat_mmap(addr, size, need_exec, is_fixed) \
+ mmap((void *)addr, size, PROT_WRITE | PROT_READ, \
+ MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0)
+#define plat_munmap munmap
+#endif
+
int psxMemInit() {
int i;
memset(psxMemRLUT, 0, 0x10000 * sizeof(void *));
memset(psxMemWLUT, 0, 0x10000 * sizeof(void *));
- psxM = mmap((void *)0x80000000, 0x00220000,
- PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ psxM = plat_mmap(0x80000000, 0x00210000, 0, 1);
+#ifndef RAM_FIXED
+ if (psxM == MAP_FAILED)
+ psxM = mmap((void *)0x70000000, 0x00210000,
+ PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
+#endif
+ if (psxM == MAP_FAILED) {
+ SysMessage(_("mapping main RAM failed"));
+ return -1;
+ }
psxP = &psxM[0x200000];
- psxH = &psxM[0x210000];
+ psxH = mmap((void *)0x1f800000, 0x00010000,
+ PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
- psxR = mmap((void *)0x9fc00000, 0x80000,
+ psxR = mmap((void *)0x1fc00000, 0x80000,
PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (psxMemRLUT == NULL || psxMemWLUT == NULL ||
- psxM != (void *)0x80000000 || psxR != (void *)0x9fc00000 ||
- psxP == NULL || psxH == NULL) {
+ psxR == MAP_FAILED ||
+ psxP == NULL || psxH != (void *)0x1f800000) {
SysMessage(_("Error allocating memory!"));
return -1;
}
}
void psxMemShutdown() {
- munmap(psxM, 0x00220000);
+ plat_munmap(psxM, 0x00210000);
+ munmap(psxH, 0x1f800000);
munmap(psxR, 0x80000);
free(psxMemRLUT);