Messages in this thread Patch in this message | | | From | David Howells <> | Subject | [PATCH 4/5] FRV: Make NOMMU-mode work with base addresses other than 0xC0000000 [try #2] | Date | Thu, 10 Apr 2008 16:11:00 +0100 |
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From: David Howells <dhowells@redhat.com>
Make NOMMU-mode work with base addresses other than 0xC0000000 by:
(1) Giving the code that sets up the protection registers the right address in __sdram_base. Rather than being hard coded to 0xC0000000, the value of __page_offset is obtained from the linker script.
(2) Eliminate the check in __switch_to() that verifies the current thread info is in the 0xCxxxxxxx region.
Signed-off-by: David Howells <dhowells@redhat.com> ---
arch/frv/kernel/head.inc | 2 +- arch/frv/kernel/switch_to.S | 7 ------- 2 files changed, 1 insertions(+), 8 deletions(-)
diff --git a/arch/frv/kernel/head.inc b/arch/frv/kernel/head.inc index d424cd2..bff6662 100644 --- a/arch/frv/kernel/head.inc +++ b/arch/frv/kernel/head.inc @@ -46,5 +46,5 @@ #ifdef CONFIG_MMU __sdram_base = 0x00000000 /* base address to which SDRAM relocated */ #else -__sdram_base = 0xc0000000 /* base address to which SDRAM relocated */ +__sdram_base = __page_offset /* base address to which SDRAM relocated */ #endif diff --git a/arch/frv/kernel/switch_to.S b/arch/frv/kernel/switch_to.S index b5275fa..b066686 100644 --- a/arch/frv/kernel/switch_to.S +++ b/arch/frv/kernel/switch_to.S @@ -102,13 +102,6 @@ __switch_to: movgs gr14,lr bar - srli gr15,#28,gr5 - subicc gr5,#0xc,gr0,icc0 - beq icc0,#0,111f - break - nop -111: - # jump to __switch_back or ret_from_fork as appropriate # - move prev to GR8 movgs gr4,psr
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