From ed9b949f55bc8a6bb6083ce0eddb53d06aee302a Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 10 Apr 2008 16:11:00 +0100 Subject: [PATCH] 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 Signed-off-by: Linus Torvalds --- arch/frv/kernel/head.inc | 2 +- arch/frv/kernel/switch_to.S | 7 ------- 2 files changed, 1 insertion(+), 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 -- 2.20.1