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| author | Zang Roy-r61911 <tie-fei.zang@freescale.com> | 2006-12-20 11:01:00 +0800 |
|---|---|---|
| committer | Andrew Fleming-AFLEMING <afleming@freescale.com> | 2007-04-23 19:58:27 -0500 |
| commit | 63247a5acd58032e6cf33f525bc3923b467bac88 (patch) | |
| tree | d962daa227037cfe8011f5c90965ceb6838a4e21 /cpu/mpc85xx | |
| parent | 0b1934ba12fd408fcc3b8bd9f4b04864c42a42bf (diff) | |
| download | u-boot-imx-63247a5acd58032e6cf33f525bc3923b467bac88.zip u-boot-imx-63247a5acd58032e6cf33f525bc3923b467bac88.tar.gz u-boot-imx-63247a5acd58032e6cf33f525bc3923b467bac88.tar.bz2 | |
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 <swarthout@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Diffstat (limited to 'cpu/mpc85xx')
| -rw-r--r-- | cpu/mpc85xx/start.S | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S index f96a4c3..20c7ebc 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 |