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powerpc: Enable additional BAT registers in setup_745x_specifics()

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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 <gerhard_pircher@gmx.net>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Gerhard Pircher 2009-06-06 11:12:36 +00:00 committed by Kumar Gala
parent b7d66c88c9
commit f1f8b4948d
1 changed files with 3 additions and 0 deletions
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arch/powerpc/kernel/cpu_setup_6xx.S
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@ -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)