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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-02 16:11:49 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-02 16:11:49 +1000
commitc9b59da130b4430910e02a80816f317534cd5e53 (patch)
tree57746ca282cac8b398147807b7e107a5260015b1 /arch/powerpc/platforms
parent9f5494b797eb334f3aba5894a0b5b34d332a3149 (diff)
parent4ee7084eb11e00eb02dc8435fd18273a61ffa9bf (diff)
Merge commit 'kumar/kumar-mmu'
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/Kconfig.cputype17
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 7f651273386..439c5ba34ec 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -50,6 +50,7 @@ config 44x
select PPC_UDBG_16550
select 4xx_SOC
select PPC_PCI_CHOICE
+ select PHYS_64BIT
config E200
bool "Freescale e200"
@@ -128,18 +129,20 @@ config FSL_EMB_PERFMON
config PTE_64BIT
bool
- depends on 44x || E500
- default y if 44x
- default y if E500 && PHYS_64BIT
+ depends on 44x || E500 || PPC_86xx
+ default y if PHYS_64BIT
config PHYS_64BIT
- bool 'Large physical address support' if E500
- depends on 44x || E500
+ bool 'Large physical address support' if E500 || PPC_86xx
+ depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
select RESOURCES_64BIT
- default y if 44x
---help---
This option enables kernel support for larger than 32-bit physical
- addresses. This features is not be available on all e500 cores.
+ addresses. This feature may not be available on all cores.
+
+ If you have more than 3.5GB of RAM or so, you also need to enable
+ SWIOTLB under Kernel Options for this to work. The actual number
+ is platform-dependent.
If in doubt, say N here.