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Add 68040 MMU support

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This commit is contained in:
Laurent Vivier 2004-03-06 01:10:31 +00:00
parent 9b2dcff01f
commit 3329589705
1 changed files with 22 additions and 10 deletions
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32
second/main.c
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@ -24,6 +24,9 @@ extern char _kernel_end;
extern char _KERNEL_SIZE;
extern void enter_kernel030(unsigned long addr, unsigned long size, unsigned long dest);
extern char end_enter_kernel030;
extern void enter_kernel040(unsigned long addr, unsigned long size, unsigned long dest);
extern char end_enter_kernel040;
#define PAGE_SHIFT 12
#define PAGE_SIZE (1UL << PAGE_SHIFT)
@ -46,6 +49,8 @@ int main(int argc, char** argv)
unsigned long start_mem;
unsigned long aligned_size;
unsigned long aligned_addr;
unsigned long enter_kernel;
unsigned long end_enter_kernel;
#endif
printf("Early Macintosh Image LoadEr\n");
@ -129,23 +134,30 @@ int main(int argc, char** argv)
/* where is mapped my boot function ? */
ret = logical2physical( (unsigned long)enter_kernel030,
(unsigned long*)&entry);
if ( (ret == 0) &&
((unsigned long)enter_kernel030 != (unsigned long)entry) )
if (mmu_type == gestalt68040MMU)
{
enter_kernel = (unsigned long)enter_kernel030;
end_enter_kernel = (unsigned long)&end_enter_kernel030;
}
else
{
enter_kernel = (unsigned long)enter_kernel040;
end_enter_kernel = (unsigned long)&end_enter_kernel040;
}
ret = logical2physical(enter_kernel, (unsigned long*)&entry);
if ( (ret == 0) && (enter_kernel != (unsigned long)entry) )
{
extern char end_enter_kernel030;
unsigned long logi;
unsigned long size = (unsigned long)&end_enter_kernel030 -
(unsigned long)&enter_kernel030;
unsigned long size = end_enter_kernel - enter_kernel;
logi = console_get_video();
ret = logical2physical(logi, (unsigned long*)&entry);
memcpy((char*)logi, &enter_kernel030, size);
memcpy((char*)entry, &enter_kernel030, size);
memcpy((char*)logi, (char*)enter_kernel, size);
memcpy((char*)entry, (char*)enter_kernel, size);
}