[PATCH] powerpc: Enable additional BAT registers in setup_745x_specifics()
From: Gerhard Pircher <hidden>
Date: 2009-06-06 21:19:19
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Currently the kernel expects the additional four IBAT and DBAT registers to be available, but doesn't enable these registers on 745x CPUs, which have them disabled after reset. Thus set the HIGH_BAT_EN bit in HID0 register, if the corresponding MMU feature is defined. Signed-off-by: Gerhard Pircher <redacted> --- arch/powerpc/kernel/cpu_setup_6xx.S | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/cpu_setup_6xx.S b/arch/powerpc/kernel/cpu_setup_6xx.S
index 54f767e..1e9949e 100644
--- a/arch/powerpc/kernel/cpu_setup_6xx.S
+++ b/arch/powerpc/kernel/cpu_setup_6xx.S@@ -239,6 +239,9 @@ END_FTR_SECTION_IFSET(CPU_FTR_L3CR) ori r11,r11,HID0_SGE | HID0_FOLD | HID0_BHTE ori r11,r11,HID0_LRSTK | HID0_BTIC oris r11,r11,HID0_DPM@h +BEGIN_MMU_FTR_SECTION + oris r11,r11,HID0_HIGH_BAT@h +END_MMU_FTR_SECTION_IFSET(MMU_FTR_USE_HIGH_BATS) BEGIN_FTR_SECTION xori r11,r11,HID0_BTIC END_FTR_SECTION_IFSET(CPU_FTR_NO_BTIC)
--
1.5.6.5
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