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authorMatthew McClintock <msm@freescale.com>2010-06-29 14:42:07 -0500
committerKumar Gala <galak@kernel.crashing.org>2010-07-11 11:04:08 -0500
commit77154a2026ee5cb2ce05a7d370c16e4c123028e5 (patch)
treeacd8ef9ff3e7d21f9f6deab764d058dbf79f7d7f /arch
parentaf71bcfeaaaad92147922282341d394093a4fc9b (diff)
downloadop-kernel-dev-77154a2026ee5cb2ce05a7d370c16e4c123028e5.zip
op-kernel-dev-77154a2026ee5cb2ce05a7d370c16e4c123028e5.tar.gz
powerpc/fsl-booke: Fix address issue when using relocatable kernels
When booting a relocatable kernel it needs to jump to the correct start address, which for BookE parts is usually unchanged regardless of the physical memory offset. Recent changes cause problems with how we calculate the start address, it was always adding the RMO into the start address which is incorrect. This patch only adds in the RMO offset if we are in the kexec code path, as it needs the RMO to work correctly. Instead of adding the RMO offset in in the common code path, we can just set r6 to the RMO offset in the kexec code path instead of to zero, and finally perform the masking in the common code path Signed-off-by: Matthew McClintock <msm@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/fsl_booke_entry_mapping.S4
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/fsl_booke_entry_mapping.S b/arch/powerpc/kernel/fsl_booke_entry_mapping.S
index beb4d78..a92c79b 100644
--- a/arch/powerpc/kernel/fsl_booke_entry_mapping.S
+++ b/arch/powerpc/kernel/fsl_booke_entry_mapping.S
@@ -205,8 +205,7 @@ next_tlb_setup:
bdnz+ next_tlb_setup
/* 7. Jump to our 1:1 mapping */
- li r6, 0
-
+ mr r6, r25
#else
#error You need to specify the mapping or not use this at all.
#endif
@@ -217,7 +216,6 @@ next_tlb_setup:
1: mflr r9
rlwimi r6,r9,0,20,31
addi r6,r6,(2f - 1b)
- add r6, r6, r25
mtspr SPRN_SRR0,r6
mtspr SPRN_SRR1,r7
rfi /* start execution out of TLB1[0] entry */
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