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sh: CONFIG_PMB doesn't mean the MMU is in 32bit mode 

CONFIG_PMB will eventually allow the MMU to be switched between 29-bit
and 32-bit mode dynamically at runtime.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Matt Fleming 2009-10-06 21:22:26 +00:00 committed by Paul Mundt
parent 1f69b6af91
commit b336f124b1
2 changed files with 1 additions and 3 deletions
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2
arch/sh/kernel/head_32.S
View File

@ -33,7 +33,7 @@ ENTRY(empty_zero_page)
.long 1 /* LOADER_TYPE */ .long 1 /* LOADER_TYPE */
.long 0x00000000 /* INITRD_START */ .long 0x00000000 /* INITRD_START */
.long 0x00000000 /* INITRD_SIZE */ .long 0x00000000 /* INITRD_SIZE */
#ifdef CONFIG_32BIT #if defined(CONFIG_32BIT) && defined(CONFIG_PMB_FIXED)
.long 0x53453f00 + 32 /* "SE?" = 32 bit */ .long 0x53453f00 + 32 /* "SE?" = 32 bit */
#else #else
.long 0x53453f00 + 29 /* "SE?" = 29 bit */ .long 0x53453f00 + 29 /* "SE?" = 29 bit */

2
arch/sh/mm/Kconfig
View File

@ -83,7 +83,6 @@ config 32BIT
config PMB_ENABLE config PMB_ENABLE
bool "Support 32-bit physical addressing through PMB" bool "Support 32-bit physical addressing through PMB"
depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7757 || CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785) depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7757 || CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
select 32BIT
default y default y
help help
If you say Y here, physical addressing will be extended to If you say Y here, physical addressing will be extended to
@ -98,7 +97,6 @@ choice
config PMB config PMB
bool "PMB" bool "PMB"
depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7757 || CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785) depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7757 || CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
select 32BIT
help help
If you say Y here, physical addressing will be extended to If you say Y here, physical addressing will be extended to
32-bits through the SH-4A PMB. If this is not set, legacy 32-bits through the SH-4A PMB. If this is not set, legacy