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Remove cache flush, 256Mb 1:1 BAT mapping, and BAT clearing. This doesn't

Browse Source 
work on a G5 (no BAT registers) or on PearPC (dBAT3 used for mapping
the framebuffer and BATs not re-inited on OpenFirmware calls).

 It also hid a number of bugs.
This commit is contained in:
Peter Grehan 2004-07-08 06:13:05 +00:00
parent 057589c485
commit 79c8d45fce
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=131785
2 changed files with 0 additions and 90 deletions
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45
sys/boot/powerpc/loader/start.c
View File

@ -38,15 +38,6 @@ __FBSDID("$FreeBSD$");
void startup(void *, int, int (*)(void *), char *, int);
#ifdef XCOFF_GLUE
asm(" \n\
.text \n\
.globl _entry \n\
_entry: \n\
.long _start,0,0 \n\
");
#endif
__asm(" \n\
.data \n\
stack: \n\
@ -55,46 +46,10 @@ stack: \n\
.text \n\
.globl _start \n\
_start: \n\
li %r8,0 \n\
li %r9,0x100 \n\
mtctr %r9 \n\
1: \n\
dcbf %r0,%r8 \n\
icbi %r0,%r8 \n\
addi %r8,%r8,0x20 \n\
bdnz 1b \n\
sync \n\
isync \n\
\n\
lis %r1,stack@ha \n\
addi %r1,%r1,stack@l \n\
addi %r1,%r1,8192 \n\
\n\
mfmsr %r8 \n\
li %r0,0 \n\
mtmsr %r0 \n\
isync \n\
\n\
mtibatu 0,%r0 \n\
mtibatu 1,%r0 \n\
mtibatu 2,%r0 \n\
mtibatu 3,%r0 \n\
mtdbatu 0,%r0 \n\
mtdbatu 1,%r0 \n\
mtdbatu 2,%r0 \n\
mtdbatu 3,%r0 \n\
\n\
li %r9,0x12 /* BATL(0, BAT_M, BAT_PP_RW) */ \n\
mtibatl 0,%r9 \n\
mtdbatl 0,%r9 \n\
li %r9,0x1ffe /* BATU(0, BAT_BL_256M, BAT_Vs) */ \n\
mtibatu 0,%r9 \n\
mtdbatu 0,%r9 \n\
isync \n\
\n\
mtmsr %r8 \n\
isync \n\
\n\
b startup \n\
");

45
sys/boot/powerpc/ofw/start.c
View File

@ -38,15 +38,6 @@ __FBSDID("$FreeBSD$");
void startup(void *, int, int (*)(void *), char *, int);
#ifdef XCOFF_GLUE
asm(" \n\
.text \n\
.globl _entry \n\
_entry: \n\
.long _start,0,0 \n\
");
#endif
__asm(" \n\
.data \n\
stack: \n\
@ -55,46 +46,10 @@ stack: \n\
.text \n\
.globl _start \n\
_start: \n\
li %r8,0 \n\
li %r9,0x100 \n\
mtctr %r9 \n\
1: \n\
dcbf %r0,%r8 \n\
icbi %r0,%r8 \n\
addi %r8,%r8,0x20 \n\
bdnz 1b \n\
sync \n\
isync \n\
\n\
lis %r1,stack@ha \n\
addi %r1,%r1,stack@l \n\
addi %r1,%r1,8192 \n\
\n\
mfmsr %r8 \n\
li %r0,0 \n\
mtmsr %r0 \n\
isync \n\
\n\
mtibatu 0,%r0 \n\
mtibatu 1,%r0 \n\
mtibatu 2,%r0 \n\
mtibatu 3,%r0 \n\
mtdbatu 0,%r0 \n\
mtdbatu 1,%r0 \n\
mtdbatu 2,%r0 \n\
mtdbatu 3,%r0 \n\
\n\
li %r9,0x12 /* BATL(0, BAT_M, BAT_PP_RW) */ \n\
mtibatl 0,%r9 \n\
mtdbatl 0,%r9 \n\
li %r9,0x1ffe /* BATU(0, BAT_BL_256M, BAT_Vs) */ \n\
mtibatu 0,%r9 \n\
mtdbatu 0,%r9 \n\
isync \n\
\n\
mtmsr %r8 \n\
isync \n\
\n\
b startup \n\
");