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- Don't touch real segments until after booting.

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- Hang function isn't too useful.

svn path=/trunk/; revision=30348
This commit is contained in:
Art Yerkes 2007-11-11 03:19:17 +00:00
parent a8f9ec7c2a
commit 0eb32850f0
1 changed files with 18 additions and 16 deletions
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34
reactos/lib/ppcmmu/mmuobject.c
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@ -59,7 +59,7 @@ typedef struct _MmuVsidInfo {
MmuFreePage *FreeList;
// Pages are allocated one by one until NextPage == RamSize >> PPC_PAGE_SHIFT
// Then we take only from the free list
int Clock = 0, TreeAlloc = 0, GdbAttach = 0;
int Clock = 0, TreeAlloc = 0, GdbAttach = 0, Booted = 0, Vsid[16];
paddr_t RamSize, FirstUsablePage, NextPage;
MmuVsidTree *NextTreePage = 0;
MmuFreeTree *FreeTree;
@ -112,7 +112,7 @@ int _mmumain(int action, void *arg1, void *arg2, void *arg3, void *tf)
case 0xa:
case 0xc:
case 0x20:
if (!callback[action](action,trap_frame)) hang(action, trap_frame);
if (!callback[action](action,trap_frame)) TakeException(action, trap_frame);
break;
/* MMU Functions */
@ -241,21 +241,10 @@ int ignore(int trapCode, ppc_trap_frame_t *trap)
return 1;
}
int hang(int trapCode, ppc_trap_frame_t *trap)
{
if (!GdbAttach)
{
GdbAttach = 1;
SerialSetUp(0, (void *)0x800003f8, 9600);
}
while(1) SerialInterrupt(trapCode, trap);
return 1;
}
int fpenable(int trapCode, ppc_trap_frame_t *trap)
{
/* Turn on FP */
trap->srr0 |= 8192;
trap->srr1 |= 8192;
return 1;
}
@ -286,7 +275,7 @@ void initme()
/* Default to hang on unknown exception */
for(i = 0; i < 30; i++)
{
callback[i] = hang;
callback[i] = TakeException;
if (i != 1) /* Preserve reset handler */
copy_trap_handler(i);
}
@ -569,8 +558,10 @@ void mmusetvsid(int start, int end, int vsid)
{
s_vsid = (vsid << 4) | (i & 15);
sr = (GetSR(i) & ~PPC_VSID_MASK) | s_vsid;
SetSR(i, sr);
if (Booted)
SetSR(i, sr);
Segs[i] = findvsid(s_vsid);
Vsid[i] = s_vsid;
}
}
@ -595,6 +586,17 @@ int ptegreload(ppc_trap_frame_t *frame, vaddr_t addr)
void callkernel(void *fun_ptr, void *arg)
{
int i;
Booted = 1;
for (i = 0; i < 16; i++)
{
// Patch up the vsid map. We shouldn't muck with these until we're
// booted.
mmusetvsid(i, i+1, Vsid[i]);
}
void (*fun)(void *) = fun_ptr;
__asm__("mfmsr 3\n\t"
"ori 3,3,0x30\n\t"