From 63247a5acd58032e6cf33f525bc3923b467bac88 Mon Sep 17 00:00:00 2001 From: Zang Roy-r61911 Date: Wed, 20 Dec 2006 11:01:00 +0800 Subject: u-boot: v2: Remove the fixed TLB and LAW entrynubmer Remove the fixed TLB and LAW entry nubmer. Use actually TLB and LAW entry number to control the loop. This can reduce the potential risk for the 85xx processor increasing its TLB adn LAW entry number. Signed-off-by: Swarthout Edward Signed-off-by: Roy Zang --- cpu/mpc85xx/start.S | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) (limited to 'cpu') diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S index f96a4c3f8b..20c7ebc723 100644 --- a/cpu/mpc85xx/start.S +++ b/cpu/mpc85xx/start.S @@ -251,13 +251,10 @@ _start_e500: */ bl tlb1_entry mr r5,r0 - li r1,0x0020 /* max 16 TLB1 plus some TLB0 entries */ - mtctr r1 lwzu r4,0(r5) /* how many TLB1 entries we actually use */ + mtctr r4 -0: cmpwi r4,0 - beq 1f - lwzu r0,4(r5) +0: lwzu r0,4(r5) lwzu r1,4(r5) lwzu r2,4(r5) lwzu r3,4(r5) @@ -269,7 +266,6 @@ _start_e500: msync tlbwe isync - addi r4,r4,-1 bdnz 0b 1: @@ -301,20 +297,16 @@ _start_e500: bl law_entry mr r6,r0 - li r1,0x0007 /* 8 LAWs, but reserve one for boot-over-rio-or-pci */ - mtctr r1 lwzu r5,0(r6) /* how many windows we actually use */ + mtctr r5 li r2,0x0c28 /* the first pair is reserved for boot-over-rio-or-pci */ li r1,0x0c30 -0: cmpwi r5,0 - beq 1f - lwzu r4,4(r6) +0: lwzu r4,4(r6) lwzu r3,4(r6) stwx r4,r7,r2 stwx r3,r7,r1 - addi r5,r5,-1 addi r2,r2,0x0020 addi r1,r1,0x0020 bdnz 0b -- cgit v1.2.1