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Diffstat (limited to 'arch/ppc/boot/simple/clear.S')
| -rw-r--r-- | arch/ppc/boot/simple/clear.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/ppc/boot/simple/clear.S b/arch/ppc/boot/simple/clear.S new file mode 100644 index 0000000..95c5647 --- /dev/null +++ b/arch/ppc/boot/simple/clear.S @@ -0,0 +1,19 @@ +/* + * Code to call _setup_L2CR to flus, invalidate and disable the L2, + * and if present, do the same to the L3. + */ + +#define CLEAR_CACHES \ + bl _setup_L2CR; \ + \ + /* If 745x, turn off L3CR as well */ \ + mfspr r8,SPRN_PVR; \ + srwi r8,r8,16; \ + \ + cmpli cr0,r8,0x8000; /* 7450 */ \ + cmpli cr1,r8,0x8001; /* 7455 */ \ + cmpli cr2,r8,0x8002; /* 7457 */ \ + /* Now test if any are true. */ \ + cror 4*cr0+eq,4*cr0+eq,4*cr1+eq; \ + cror 4*cr0+eq,4*cr0+eq,4*cr2+eq; \ + beql _setup_L3CR |