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| author | Nick Spence <nick.spence@freescale.com> | 2008-08-28 14:09:11 -0700 |
|---|---|---|
| committer | Kim Phillips <kim.phillips@freescale.com> | 2008-09-03 16:06:51 -0500 |
| commit | ade50c7fa1b16ef98be17e9c3ae286aecf4f5605 (patch) | |
| tree | 4b9533cbea8331453998f3d421015cf717755d35 /cpu/mpc83xx/start.S | |
| parent | d9fe88173cb4f7d293796ffe10c7a0d3d426d8f9 (diff) | |
| download | u-boot-imx-ade50c7fa1b16ef98be17e9c3ae286aecf4f5605.zip u-boot-imx-ade50c7fa1b16ef98be17e9c3ae286aecf4f5605.tar.gz u-boot-imx-ade50c7fa1b16ef98be17e9c3ae286aecf4f5605.tar.bz2 | |
mpc83xx: use r4 instead of r2 in lock_ram_in_cache and unlock_ram_in_cache
This is needed in unlock_ram_in_cache() because it is called from C and
will corrupt the small data area anchor that is kept in R2.
lock_ram_in_cache() is modified similarly as good coding practice, but
is not called from C.
Signed-off-by: Nick Spence <nick.spence@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Diffstat (limited to 'cpu/mpc83xx/start.S')
| -rw-r--r-- | cpu/mpc83xx/start.S | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/cpu/mpc83xx/start.S b/cpu/mpc83xx/start.S index 16ed494..75ad36c 100644 --- a/cpu/mpc83xx/start.S +++ b/cpu/mpc83xx/start.S @@ -1060,9 +1060,9 @@ lock_ram_in_cache: */ lis r3, (CFG_INIT_RAM_ADDR & ~31)@h ori r3, r3, (CFG_INIT_RAM_ADDR & ~31)@l - li r2, ((CFG_INIT_RAM_END & ~31) + \ + li r4, ((CFG_INIT_RAM_END & ~31) + \ (CFG_INIT_RAM_ADDR & 31) + 31) / 32 - mtctr r2 + mtctr r4 1: dcbz r0, r3 addi r3, r3, 32 @@ -1082,8 +1082,9 @@ unlock_ram_in_cache: /* invalidate the INIT_RAM section */ lis r3, (CFG_INIT_RAM_ADDR & ~31)@h ori r3, r3, (CFG_INIT_RAM_ADDR & ~31)@l - li r2,512 - mtctr r2 + li r4, ((CFG_INIT_RAM_END & ~31) + \ + (CFG_INIT_RAM_ADDR & 31) + 31) / 32 + mtctr r4 1: icbi r0, r3 dcbi r0, r3 addi r3, r3, 32 |