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| author | David Howells <dhowells@redhat.com> | 2008-04-10 16:11:00 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-10 13:41:29 -0700 |
| commit | ed9b949f55bc8a6bb6083ce0eddb53d06aee302a (patch) | |
| tree | 03c7005beb1611028c13a34766f87da848b13859 /arch/frv | |
| parent | e31c243f984628d02f045dc4b622f1e2827860dc (diff) | |
| download | linux-ed9b949f55bc8a6bb6083ce0eddb53d06aee302a.tar.gz linux-ed9b949f55bc8a6bb6083ce0eddb53d06aee302a.tar.xz | |
FRV: Make NOMMU-mode work with base addresses other than 0xC0000000 [try #2]
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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/frv')
| -rw-r--r-- | arch/frv/kernel/head.inc | 2 | ||||
| -rw-r--r-- | 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 d424cd2eb213..bff66628b99a 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 b5275fa9cd0d..b06668670fcc 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 |