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Message-Id: <1363299128-8192-4-git-send-email-arnd@arndb.de>
Date: Thu, 14 Mar 2013 23:12:05 +0100
From: Arnd Bergmann <arnd@...db.de>
To: linux-arm-kernel@...r.kernel.org
Cc: patches@...aro.org, Olof Johansson <olof@...om.net>,
linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 3/6] ARM: remove fa526 CPU support
With the Cortina Gemini platform gone, nothing in ARM uses
the Faraday 526 CPU core support any more. There is at least
one other platform using this (Moschip MCS814x), but the
efforts to get that merged into mainline appear to have
stalled.
If someone still needs this code, please speak up now,
otherwise we will remove it now. Of course there is
always the option to revert this patch if we need it
again later.
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
MAINTAINERS | 7 --
arch/arm/Kconfig | 2 +-
arch/arm/Makefile | 1 -
arch/arm/boot/compressed/head.S | 28 -----
arch/arm/include/asm/barrier.h | 6 -
arch/arm/include/asm/glue-cache.h | 8 --
arch/arm/include/asm/glue-proc.h | 9 --
arch/arm/include/asm/page.h | 8 --
arch/arm/include/asm/tlbflush.h | 19 ---
arch/arm/mm/Kconfig | 32 +----
arch/arm/mm/Makefile | 4 -
arch/arm/mm/cache-fa.S | 249 --------------------------------------
arch/arm/mm/copypage-fa.c | 86 -------------
arch/arm/mm/proc-fa526.S | 221 ---------------------------------
arch/arm/mm/tlb-fa.S | 69 -----------
15 files changed, 3 insertions(+), 746 deletions(-)
delete mode 100644 arch/arm/mm/cache-fa.S
delete mode 100644 arch/arm/mm/copypage-fa.c
delete mode 100644 arch/arm/mm/proc-fa526.S
delete mode 100644 arch/arm/mm/tlb-fa.S
diff --git a/MAINTAINERS b/MAINTAINERS
index 4b59496..f23d90f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -813,13 +813,6 @@ S: Maintained
T: topgit git://git.openezx.org/openezx.git
F: arch/arm/mach-pxa/ezx.c
-ARM/FARADAY FA526 PORT
-M: Hans Ulli Kroll <ulli.kroll@...glemail.com>
-L: linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
-S: Maintained
-T: git git://git.berlios.de/gemini-board
-F: arch/arm/mm/*-fa*
-
ARM/FOOTBRIDGE ARCHITECTURE
M: Russell King <linux@....linux.org.uk>
L: linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b62699a..9d2e825 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -980,7 +980,7 @@ menu "Multiple platform selection"
comment "CPU Core family selection"
config ARCH_MULTI_V4
- bool "ARMv4 based platforms (FA526, StrongARM)"
+ bool "ARMv4 based platforms (StrongARM)"
depends on !ARCH_MULTI_V6_V7
select ARCH_MULTI_V4_V5
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 50e755b..b514a0a 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -82,7 +82,6 @@ tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi
-tune-$(CONFIG_CPU_FA526) :=-mtune=arm9tdmi
tune-$(CONFIG_CPU_SA110) :=-mtune=strongarm110
tune-$(CONFIG_CPU_SA1100) :=-mtune=strongarm1100
tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index fe4d9c3..4e985f0 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -726,21 +726,6 @@ __armv7_mmu_cache_on:
mcr p15, 0, r0, c7, c5, 4 @ ISB
mov pc, r12
-__fa526_cache_on:
- mov r12, lr
- mov r6, #CB_BITS | 0x12 @ U
- bl __setup_mmu
- mov r0, #0
- mcr p15, 0, r0, c7, c7, 0 @ Invalidate whole cache
- mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
- mcr p15, 0, r0, c8, c7, 0 @ flush UTLB
- mrc p15, 0, r0, c1, c0, 0 @ read control reg
- orr r0, r0, #0x1000 @ I-cache enable
- bl __common_mmu_cache_on
- mov r0, #0
- mcr p15, 0, r0, c8, c7, 0 @ flush UTLB
- mov pc, r12
-
__common_mmu_cache_on:
#ifndef CONFIG_THUMB2_KERNEL
#ifndef DEBUG
@@ -898,12 +883,6 @@ proc_types:
b __armv5tej_mmu_cache_flush
#endif
- .word 0x66015261 @ FA526
- .word 0xff01fff1
- W(b) __fa526_cache_on
- W(b) __armv4_mmu_cache_off
- W(b) __fa526_cache_flush
-
@ These match on the architecture ID
.word 0x00020000 @ ARMv4T
@@ -1048,13 +1027,6 @@ __armv4_mpu_cache_flush:
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mov pc, lr
-__fa526_cache_flush:
- mov r1, #0
- mcr p15, 0, r1, c7, c14, 0 @ clean and invalidate D cache
- mcr p15, 0, r1, c7, c5, 0 @ flush I cache
- mcr p15, 0, r1, c7, c10, 4 @ drain WB
- mov pc, lr
-
__armv6_mmu_cache_flush:
mov r1, #0
mcr p15, 0, r1, c7, c14, 0 @ clean+invalidate D
diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
index 8dcd9c7..7158a84 100644
--- a/arch/arm/include/asm/barrier.h
+++ b/arch/arm/include/asm/barrier.h
@@ -24,12 +24,6 @@
: : "r" (0) : "memory")
#define dmb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \
: : "r" (0) : "memory")
-#elif defined(CONFIG_CPU_FA526)
-#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \
- : : "r" (0) : "memory")
-#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \
- : : "r" (0) : "memory")
-#define dmb() __asm__ __volatile__ ("" : : : "memory")
#else
#define isb() __asm__ __volatile__ ("" : : : "memory")
#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \
diff --git a/arch/arm/include/asm/glue-cache.h b/arch/arm/include/asm/glue-cache.h
index cca9f15..adc0955 100644
--- a/arch/arm/include/asm/glue-cache.h
+++ b/arch/arm/include/asm/glue-cache.h
@@ -41,14 +41,6 @@
# define MULTI_CACHE 1
#endif
-#if defined(CONFIG_CPU_FA526)
-# ifdef _CACHE
-# define MULTI_CACHE 1
-# else
-# define _CACHE fa
-# endif
-#endif
-
#if defined(CONFIG_CPU_ARM926T)
# ifdef _CACHE
# define MULTI_CACHE 1
diff --git a/arch/arm/include/asm/glue-proc.h b/arch/arm/include/asm/glue-proc.h
index ac1dd54..8e42e0d 100644
--- a/arch/arm/include/asm/glue-proc.h
+++ b/arch/arm/include/asm/glue-proc.h
@@ -77,15 +77,6 @@
# endif
#endif
-#ifdef CONFIG_CPU_FA526
-# ifdef CPU_NAME
-# undef MULTI_CPU
-# define MULTI_CPU
-# else
-# define CPU_NAME cpu_fa526
-# endif
-#endif
-
#ifdef CONFIG_CPU_ARM925T
# ifdef CPU_NAME
# undef MULTI_CPU
diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
index 812a494..15595fa 100644
--- a/arch/arm/include/asm/page.h
+++ b/arch/arm/include/asm/page.h
@@ -67,14 +67,6 @@
# endif
#endif
-#ifdef CONFIG_CPU_COPY_FA
-# ifdef _USER
-# define MULTI_USER 1
-# else
-# define _USER fa
-# endif
-#endif
-
#ifdef CONFIG_CPU_SA1100
# ifdef _USER
# define MULTI_USER 1
diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h
index 4db8c88..7d4a918d 100644
--- a/arch/arm/include/asm/tlbflush.h
+++ b/arch/arm/include/asm/tlbflush.h
@@ -57,7 +57,6 @@
* v4wb - ARMv4 with write buffer without I TLB flush entry instruction
* v4wbi - ARMv4 with write buffer with I TLB flush entry instruction
* fr - Feroceon (v4wbi with non-outer-cacheable page table walks)
- * fa - Faraday (v4 with write buffer with UTLB)
* v6wbi - ARMv6 with write buffer with I TLB flush entry instruction
* v7wbi - identical to v6wbi
*/
@@ -83,22 +82,6 @@
# define v4_always_flags (-1UL)
#endif
-#define fa_tlb_flags (TLB_WB | TLB_DCLEAN | TLB_BARRIER | \
- TLB_V4_U_FULL | TLB_V4_U_PAGE)
-
-#ifdef CONFIG_CPU_TLB_FA
-# define fa_possible_flags fa_tlb_flags
-# define fa_always_flags fa_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB fa
-# endif
-#else
-# define fa_possible_flags 0
-# define fa_always_flags (-1UL)
-#endif
-
#define v4wbi_tlb_flags (TLB_WB | TLB_DCLEAN | \
TLB_V4_I_FULL | TLB_V4_D_FULL | \
TLB_V4_I_PAGE | TLB_V4_D_PAGE)
@@ -293,7 +276,6 @@ extern struct cpu_tlb_fns cpu_tlb;
v4wbi_possible_flags | \
fr_possible_flags | \
v4wb_possible_flags | \
- fa_possible_flags | \
v6wbi_possible_flags | \
v7wbi_possible_flags)
@@ -301,7 +283,6 @@ extern struct cpu_tlb_fns cpu_tlb;
v4wbi_always_flags & \
fr_always_flags & \
v4wb_always_flags & \
- fa_always_flags & \
v6wbi_always_flags & \
v7wbi_always_flags)
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 025d173..aa878d4 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -143,24 +143,6 @@ config CPU_ARM926T
Say Y if you want support for the ARM926T processor.
Otherwise, say N.
-# FA526
-config CPU_FA526
- bool
- select CPU_32v4
- select CPU_ABRT_EV4
- select CPU_CACHE_FA
- select CPU_CACHE_VIVT
- select CPU_COPY_FA if MMU
- select CPU_CP15_MMU
- select CPU_PABRT_LEGACY
- select CPU_TLB_FA if MMU
- help
- The FA526 is a version of the ARMv4 compatible processor with
- Branch Target Buffer, Unified TLB and cache line size 16.
-
- Say Y if you want support for the FA526 processor.
- Otherwise, say N.
-
# ARM940T
config CPU_ARM940T
bool "Support ARM940T processor" if ARCH_INTEGRATOR
@@ -507,9 +489,6 @@ config CPU_COPY_V4WB
config CPU_COPY_FEROCEON
bool
-config CPU_COPY_FA
- bool
-
config CPU_COPY_V6
bool
@@ -535,13 +514,6 @@ config CPU_TLB_FEROCEON
help
Feroceon TLB (v4wbi with non-outer-cachable page table walks).
-config CPU_TLB_FA
- bool
- help
- Faraday ARM FA526 architecture, unified TLB with writeback cache
- and invalidate instruction cache entry. Branch target buffer is
- also supported.
-
config CPU_TLB_V6
bool
@@ -731,7 +703,7 @@ config CPU_DCACHE_SIZE
config CPU_DCACHE_WRITETHROUGH
bool "Force write through D-cache"
- depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_FA526) && !CPU_DCACHE_DISABLE
+ depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020) && !CPU_DCACHE_DISABLE
default y if CPU_ARM925T
help
Say Y here to use the data cache in writethrough mode. Unless you
@@ -746,7 +718,7 @@ config CPU_CACHE_ROUND_ROBIN
config CPU_BPREDICT_DISABLE
bool "Disable branch prediction"
- depends on CPU_ARM1020 || CPU_V6 || CPU_V6K || CPU_MOHAWK || CPU_XSC3 || CPU_V7 || CPU_FA526
+ depends on CPU_ARM1020 || CPU_V6 || CPU_V6K || CPU_MOHAWK || CPU_XSC3 || CPU_V7
help
Say Y here to disable branch prediction. If unsure, say N.
diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile
index 4e333fa..b714ad6 100644
--- a/arch/arm/mm/Makefile
+++ b/arch/arm/mm/Makefile
@@ -39,7 +39,6 @@ obj-$(CONFIG_CPU_CACHE_V4WT) += cache-v4wt.o
obj-$(CONFIG_CPU_CACHE_V4WB) += cache-v4wb.o
obj-$(CONFIG_CPU_CACHE_V6) += cache-v6.o
obj-$(CONFIG_CPU_CACHE_V7) += cache-v7.o
-obj-$(CONFIG_CPU_CACHE_FA) += cache-fa.o
AFLAGS_cache-v6.o :=-Wa,-march=armv6
AFLAGS_cache-v7.o :=-Wa,-march=armv7-a
@@ -51,7 +50,6 @@ obj-$(CONFIG_CPU_COPY_V6) += copypage-v6.o context.o
obj-$(CONFIG_CPU_SA1100) += copypage-v4mc.o
obj-$(CONFIG_CPU_XSCALE) += copypage-xscale.o
obj-$(CONFIG_CPU_XSC3) += copypage-xsc3.o
-obj-$(CONFIG_CPU_COPY_FA) += copypage-fa.o
obj-$(CONFIG_CPU_TLB_V4WT) += tlb-v4.o
obj-$(CONFIG_CPU_TLB_V4WB) += tlb-v4wb.o
@@ -59,7 +57,6 @@ obj-$(CONFIG_CPU_TLB_V4WBI) += tlb-v4wbi.o
obj-$(CONFIG_CPU_TLB_FEROCEON) += tlb-v4wbi.o # reuse v4wbi TLB functions
obj-$(CONFIG_CPU_TLB_V6) += tlb-v6.o
obj-$(CONFIG_CPU_TLB_V7) += tlb-v7.o
-obj-$(CONFIG_CPU_TLB_FA) += tlb-fa.o
AFLAGS_tlb-v6.o :=-Wa,-march=armv6
AFLAGS_tlb-v7.o :=-Wa,-march=armv7-a
@@ -74,7 +71,6 @@ obj-$(CONFIG_CPU_ARM925T) += proc-arm925.o
obj-$(CONFIG_CPU_ARM926T) += proc-arm926.o
obj-$(CONFIG_CPU_ARM940T) += proc-arm940.o
obj-$(CONFIG_CPU_ARM946E) += proc-arm946.o
-obj-$(CONFIG_CPU_FA526) += proc-fa526.o
obj-$(CONFIG_CPU_ARM1020) += proc-arm1020.o
obj-$(CONFIG_CPU_ARM1020E) += proc-arm1020e.o
obj-$(CONFIG_CPU_ARM1022) += proc-arm1022.o
diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S
deleted file mode 100644
index e505bef..0000000
--- a/arch/arm/mm/cache-fa.S
+++ /dev/null
@@ -1,249 +0,0 @@
-/*
- * linux/arch/arm/mm/cache-fa.S
- *
- * Copyright (C) 2005 Faraday Corp.
- * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
- *
- * Based on cache-v4wb.S:
- * Copyright (C) 1997-2002 Russell king
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Processors: FA520 FA526 FA626
- */
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <asm/memory.h>
-#include <asm/page.h>
-
-#include "proc-macros.S"
-
-/*
- * The size of one data cache line.
- */
-#define CACHE_DLINESIZE 16
-
-/*
- * The total size of the data cache.
- */
-#ifdef CONFIG_ARCH_GEMINI
-#define CACHE_DSIZE 8192
-#else
-#define CACHE_DSIZE 16384
-#endif
-
-/* FIXME: put optimal value here. Current one is just estimation */
-#define CACHE_DLIMIT (CACHE_DSIZE * 2)
-
-/*
- * flush_icache_all()
- *
- * Unconditionally clean and invalidate the entire icache.
- */
-ENTRY(fa_flush_icache_all)
- mov r0, #0
- mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache
- mov pc, lr
-ENDPROC(fa_flush_icache_all)
-
-/*
- * flush_user_cache_all()
- *
- * Clean and invalidate all cache entries in a particular address
- * space.
- */
-ENTRY(fa_flush_user_cache_all)
- /* FALLTHROUGH */
-/*
- * flush_kern_cache_all()
- *
- * Clean and invalidate the entire cache.
- */
-ENTRY(fa_flush_kern_cache_all)
- mov ip, #0
- mov r2, #VM_EXEC
-__flush_whole_cache:
- mcr p15, 0, ip, c7, c14, 0 @ clean/invalidate D cache
- tst r2, #VM_EXEC
- mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache
- mcrne p15, 0, ip, c7, c5, 6 @ invalidate BTB
- mcrne p15, 0, ip, c7, c10, 4 @ drain write buffer
- mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush
- mov pc, lr
-
-/*
- * flush_user_cache_range(start, end, flags)
- *
- * Invalidate a range of cache entries in the specified
- * address space.
- *
- * - start - start address (inclusive, page aligned)
- * - end - end address (exclusive, page aligned)
- * - flags - vma_area_struct flags describing address space
- */
-ENTRY(fa_flush_user_cache_range)
- mov ip, #0
- sub r3, r1, r0 @ calculate total size
- cmp r3, #CACHE_DLIMIT @ total size >= limit?
- bhs __flush_whole_cache @ flush whole D cache
-
-1: tst r2, #VM_EXEC
- mcrne p15, 0, r0, c7, c5, 1 @ invalidate I line
- mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry
- add r0, r0, #CACHE_DLINESIZE
- cmp r0, r1
- blo 1b
- tst r2, #VM_EXEC
- mcrne p15, 0, ip, c7, c5, 6 @ invalidate BTB
- mcrne p15, 0, ip, c7, c10, 4 @ data write barrier
- mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush
- mov pc, lr
-
-/*
- * coherent_kern_range(start, end)
- *
- * Ensure coherency between the Icache and the Dcache in the
- * region described by start. If you have non-snooping
- * Harvard caches, you need to implement this function.
- *
- * - start - virtual start address
- * - end - virtual end address
- */
-ENTRY(fa_coherent_kern_range)
- /* fall through */
-
-/*
- * coherent_user_range(start, end)
- *
- * Ensure coherency between the Icache and the Dcache in the
- * region described by start. If you have non-snooping
- * Harvard caches, you need to implement this function.
- *
- * - start - virtual start address
- * - end - virtual end address
- */
-ENTRY(fa_coherent_user_range)
- bic r0, r0, #CACHE_DLINESIZE - 1
-1: mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry
- mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry
- add r0, r0, #CACHE_DLINESIZE
- cmp r0, r1
- blo 1b
- mov r0, #0
- mcr p15, 0, r0, c7, c5, 6 @ invalidate BTB
- mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
- mcr p15, 0, r0, c7, c5, 4 @ prefetch flush
- mov pc, lr
-
-/*
- * flush_kern_dcache_area(void *addr, size_t size)
- *
- * Ensure that the data held in the page kaddr is written back
- * to the page in question.
- *
- * - addr - kernel address
- * - size - size of region
- */
-ENTRY(fa_flush_kern_dcache_area)
- add r1, r0, r1
-1: mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D line
- add r0, r0, #CACHE_DLINESIZE
- cmp r0, r1
- blo 1b
- mov r0, #0
- mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache
- mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
- mov pc, lr
-
-/*
- * dma_inv_range(start, end)
- *
- * Invalidate (discard) the specified virtual address range.
- * May not write back any entries. If 'start' or 'end'
- * are not cache line aligned, those lines must be written
- * back.
- *
- * - start - virtual start address
- * - end - virtual end address
- */
-fa_dma_inv_range:
- tst r0, #CACHE_DLINESIZE - 1
- bic r0, r0, #CACHE_DLINESIZE - 1
- mcrne p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry
- tst r1, #CACHE_DLINESIZE - 1
- bic r1, r1, #CACHE_DLINESIZE - 1
- mcrne p15, 0, r1, c7, c14, 1 @ clean & invalidate D entry
-1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
- add r0, r0, #CACHE_DLINESIZE
- cmp r0, r1
- blo 1b
- mov r0, #0
- mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
- mov pc, lr
-
-/*
- * dma_clean_range(start, end)
- *
- * Clean (write back) the specified virtual address range.
- *
- * - start - virtual start address
- * - end - virtual end address
- */
-fa_dma_clean_range:
- bic r0, r0, #CACHE_DLINESIZE - 1
-1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
- add r0, r0, #CACHE_DLINESIZE
- cmp r0, r1
- blo 1b
- mov r0, #0
- mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
- mov pc, lr
-
-/*
- * dma_flush_range(start,end)
- * - start - virtual start address of region
- * - end - virtual end address of region
- */
-ENTRY(fa_dma_flush_range)
- bic r0, r0, #CACHE_DLINESIZE - 1
-1: mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry
- add r0, r0, #CACHE_DLINESIZE
- cmp r0, r1
- blo 1b
- mov r0, #0
- mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
- mov pc, lr
-
-/*
- * dma_map_area(start, size, dir)
- * - start - kernel virtual start address
- * - size - size of region
- * - dir - DMA direction
- */
-ENTRY(fa_dma_map_area)
- add r1, r1, r0
- cmp r2, #DMA_TO_DEVICE
- beq fa_dma_clean_range
- bcs fa_dma_inv_range
- b fa_dma_flush_range
-ENDPROC(fa_dma_map_area)
-
-/*
- * dma_unmap_area(start, size, dir)
- * - start - kernel virtual start address
- * - size - size of region
- * - dir - DMA direction
- */
-ENTRY(fa_dma_unmap_area)
- mov pc, lr
-ENDPROC(fa_dma_unmap_area)
-
- .globl fa_flush_kern_cache_louis
- .equ fa_flush_kern_cache_louis, fa_flush_kern_cache_all
-
- __INITDATA
-
- @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
- define_cache_functions fa
diff --git a/arch/arm/mm/copypage-fa.c b/arch/arm/mm/copypage-fa.c
deleted file mode 100644
index d130a5e..0000000
--- a/arch/arm/mm/copypage-fa.c
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * linux/arch/arm/lib/copypage-fa.S
- *
- * Copyright (C) 2005 Faraday Corp.
- * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
- *
- * Based on copypage-v4wb.S:
- * Copyright (C) 1995-1999 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/highmem.h>
-
-/*
- * Faraday optimised copy_user_page
- */
-static void __naked
-fa_copy_user_page(void *kto, const void *kfrom)
-{
- asm("\
- stmfd sp!, {r4, lr} @ 2\n\
- mov r2, %0 @ 1\n\
-1: ldmia r1!, {r3, r4, ip, lr} @ 4\n\
- stmia r0, {r3, r4, ip, lr} @ 4\n\
- mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\
- add r0, r0, #16 @ 1\n\
- ldmia r1!, {r3, r4, ip, lr} @ 4\n\
- stmia r0, {r3, r4, ip, lr} @ 4\n\
- mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\
- add r0, r0, #16 @ 1\n\
- subs r2, r2, #1 @ 1\n\
- bne 1b @ 1\n\
- mcr p15, 0, r2, c7, c10, 4 @ 1 drain WB\n\
- ldmfd sp!, {r4, pc} @ 3"
- :
- : "I" (PAGE_SIZE / 32));
-}
-
-void fa_copy_user_highpage(struct page *to, struct page *from,
- unsigned long vaddr, struct vm_area_struct *vma)
-{
- void *kto, *kfrom;
-
- kto = kmap_atomic(to);
- kfrom = kmap_atomic(from);
- fa_copy_user_page(kto, kfrom);
- kunmap_atomic(kfrom);
- kunmap_atomic(kto);
-}
-
-/*
- * Faraday optimised clear_user_page
- *
- * Same story as above.
- */
-void fa_clear_user_highpage(struct page *page, unsigned long vaddr)
-{
- void *ptr, *kaddr = kmap_atomic(page);
- asm volatile("\
- mov r1, %2 @ 1\n\
- mov r2, #0 @ 1\n\
- mov r3, #0 @ 1\n\
- mov ip, #0 @ 1\n\
- mov lr, #0 @ 1\n\
-1: stmia %0, {r2, r3, ip, lr} @ 4\n\
- mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\
- add %0, %0, #16 @ 1\n\
- stmia %0, {r2, r3, ip, lr} @ 4\n\
- mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\
- add %0, %0, #16 @ 1\n\
- subs r1, r1, #1 @ 1\n\
- bne 1b @ 1\n\
- mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB"
- : "=r" (ptr)
- : "0" (kaddr), "I" (PAGE_SIZE / 32)
- : "r1", "r2", "r3", "ip", "lr");
- kunmap_atomic(kaddr);
-}
-
-struct cpu_user_fns fa_user_fns __initdata = {
- .cpu_clear_user_highpage = fa_clear_user_highpage,
- .cpu_copy_user_highpage = fa_copy_user_highpage,
-};
diff --git a/arch/arm/mm/proc-fa526.S b/arch/arm/mm/proc-fa526.S
deleted file mode 100644
index d217e97..0000000
--- a/arch/arm/mm/proc-fa526.S
+++ /dev/null
@@ -1,221 +0,0 @@
-/*
- * linux/arch/arm/mm/proc-fa526.S: MMU functions for FA526
- *
- * Written by : Luke Lee
- * Copyright (C) 2005 Faraday Corp.
- * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- *
- * These are the low level assembler for performing cache and TLB
- * functions on the fa526.
- */
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <asm/assembler.h>
-#include <asm/hwcap.h>
-#include <asm/pgtable-hwdef.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/ptrace.h>
-
-#include "proc-macros.S"
-
-#define CACHE_DLINESIZE 16
-
- .text
-/*
- * cpu_fa526_proc_init()
- */
-ENTRY(cpu_fa526_proc_init)
- mov pc, lr
-
-/*
- * cpu_fa526_proc_fin()
- */
-ENTRY(cpu_fa526_proc_fin)
- mrc p15, 0, r0, c1, c0, 0 @ ctrl register
- bic r0, r0, #0x1000 @ ...i............
- bic r0, r0, #0x000e @ ............wca.
- mcr p15, 0, r0, c1, c0, 0 @ disable caches
- nop
- nop
- mov pc, lr
-
-/*
- * cpu_fa526_reset(loc)
- *
- * Perform a soft reset of the system. Put the CPU into the
- * same state as it would be if it had been reset, and branch
- * to what would be the reset vector.
- *
- * loc: location to jump to for soft reset
- */
- .align 4
- .pushsection .idmap.text, "ax"
-ENTRY(cpu_fa526_reset)
-/* TODO: Use CP8 if possible... */
- mov ip, #0
- mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches
- mcr p15, 0, ip, c7, c10, 4 @ drain WB
-#ifdef CONFIG_MMU
- mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs
-#endif
- mrc p15, 0, ip, c1, c0, 0 @ ctrl register
- bic ip, ip, #0x000f @ ............wcam
- bic ip, ip, #0x1100 @ ...i...s........
- bic ip, ip, #0x0800 @ BTB off
- mcr p15, 0, ip, c1, c0, 0 @ ctrl register
- nop
- nop
- mov pc, r0
-ENDPROC(cpu_fa526_reset)
- .popsection
-
-/*
- * cpu_fa526_do_idle()
- */
- .align 4
-ENTRY(cpu_fa526_do_idle)
- mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt
- mov pc, lr
-
-
-ENTRY(cpu_fa526_dcache_clean_area)
-1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
- add r0, r0, #CACHE_DLINESIZE
- subs r1, r1, #CACHE_DLINESIZE
- bhi 1b
- mcr p15, 0, r0, c7, c10, 4 @ drain WB
- mov pc, lr
-
-/* =============================== PageTable ============================== */
-
-/*
- * cpu_fa526_switch_mm(pgd)
- *
- * Set the translation base pointer to be as described by pgd.
- *
- * pgd: new page tables
- */
- .align 4
-ENTRY(cpu_fa526_switch_mm)
-#ifdef CONFIG_MMU
- mov ip, #0
-#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
- mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache
-#else
- mcr p15, 0, ip, c7, c14, 0 @ clean and invalidate whole D cache
-#endif
- mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
- mcr p15, 0, ip, c7, c5, 6 @ invalidate BTB since mm changed
- mcr p15, 0, ip, c7, c10, 4 @ data write barrier
- mcr p15, 0, ip, c7, c5, 4 @ prefetch flush
- mcr p15, 0, r0, c2, c0, 0 @ load page table pointer
- mcr p15, 0, ip, c8, c7, 0 @ invalidate UTLB
-#endif
- mov pc, lr
-
-/*
- * cpu_fa526_set_pte_ext(ptep, pte, ext)
- *
- * Set a PTE and flush it out
- */
- .align 4
-ENTRY(cpu_fa526_set_pte_ext)
-#ifdef CONFIG_MMU
- armv3_set_pte_ext
- mov r0, r0
- mcr p15, 0, r0, c7, c10, 1 @ clean D entry
- mov r0, #0
- mcr p15, 0, r0, c7, c10, 4 @ drain WB
-#endif
- mov pc, lr
-
- __CPUINIT
-
- .type __fa526_setup, #function
-__fa526_setup:
- /* On return of this routine, r0 must carry correct flags for CFG register */
- mov r0, #0
- mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4
- mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4
-#ifdef CONFIG_MMU
- mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4
-#endif
- mcr p15, 0, r0, c7, c5, 5 @ invalidate IScratchpad RAM
-
- mov r0, #1
- mcr p15, 0, r0, c1, c1, 0 @ turn-on ECR
-
- mov r0, #0
- mcr p15, 0, r0, c7, c5, 6 @ invalidate BTB All
- mcr p15, 0, r0, c7, c10, 4 @ data write barrier
- mcr p15, 0, r0, c7, c5, 4 @ prefetch flush
-
- mov r0, #0x1f @ Domains 0, 1 = manager, 2 = client
- mcr p15, 0, r0, c3, c0 @ load domain access register
-
- mrc p15, 0, r0, c1, c0 @ get control register v4
- ldr r5, fa526_cr1_clear
- bic r0, r0, r5
- ldr r5, fa526_cr1_set
- orr r0, r0, r5
- mov pc, lr
- .size __fa526_setup, . - __fa526_setup
-
- /*
- * .RVI ZFRS BLDP WCAM
- * ..11 1001 .111 1101
- *
- */
- .type fa526_cr1_clear, #object
- .type fa526_cr1_set, #object
-fa526_cr1_clear:
- .word 0x3f3f
-fa526_cr1_set:
- .word 0x397D
-
- __INITDATA
-
- @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
- define_processor_functions fa526, dabort=v4_early_abort, pabort=legacy_pabort
-
- .section ".rodata"
-
- string cpu_arch_name, "armv4"
- string cpu_elf_name, "v4"
- string cpu_fa526_name, "FA526"
-
- .align
-
- .section ".proc.info.init", #alloc, #execinstr
-
- .type __fa526_proc_info,#object
-__fa526_proc_info:
- .long 0x66015261
- .long 0xff01fff1
- .long PMD_TYPE_SECT | \
- PMD_SECT_BUFFERABLE | \
- PMD_SECT_CACHEABLE | \
- PMD_BIT4 | \
- PMD_SECT_AP_WRITE | \
- PMD_SECT_AP_READ
- .long PMD_TYPE_SECT | \
- PMD_BIT4 | \
- PMD_SECT_AP_WRITE | \
- PMD_SECT_AP_READ
- b __fa526_setup
- .long cpu_arch_name
- .long cpu_elf_name
- .long HWCAP_SWP | HWCAP_HALF
- .long cpu_fa526_name
- .long fa526_processor_functions
- .long fa_tlb_fns
- .long fa_user_fns
- .long fa_cache_fns
- .size __fa526_proc_info, . - __fa526_proc_info
diff --git a/arch/arm/mm/tlb-fa.S b/arch/arm/mm/tlb-fa.S
deleted file mode 100644
index d3ddcf9..0000000
--- a/arch/arm/mm/tlb-fa.S
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * linux/arch/arm/mm/tlb-fa.S
- *
- * Copyright (C) 2005 Faraday Corp.
- * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
- *
- * Based on tlb-v4wbi.S:
- * Copyright (C) 1997-2002 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * ARM architecture version 4, Faraday variation.
- * This assume an unified TLBs, with a write buffer, and branch target buffer (BTB)
- *
- * Processors: FA520 FA526 FA626
- */
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <asm/asm-offsets.h>
-#include <asm/tlbflush.h>
-#include "proc-macros.S"
-
-
-/*
- * flush_user_tlb_range(start, end, mm)
- *
- * Invalidate a range of TLB entries in the specified address space.
- *
- * - start - range start address
- * - end - range end address
- * - mm - mm_struct describing address space
- */
- .align 4
-ENTRY(fa_flush_user_tlb_range)
- vma_vm_mm ip, r2
- act_mm r3 @ get current->active_mm
- eors r3, ip, r3 @ == mm ?
- movne pc, lr @ no, we dont do anything
- mov r3, #0
- mcr p15, 0, r3, c7, c10, 4 @ drain WB
- bic r0, r0, #0x0ff
- bic r0, r0, #0xf00
-1: mcr p15, 0, r0, c8, c7, 1 @ invalidate UTLB entry
- add r0, r0, #PAGE_SZ
- cmp r0, r1
- blo 1b
- mcr p15, 0, r3, c7, c10, 4 @ data write barrier
- mov pc, lr
-
-
-ENTRY(fa_flush_kern_tlb_range)
- mov r3, #0
- mcr p15, 0, r3, c7, c10, 4 @ drain WB
- bic r0, r0, #0x0ff
- bic r0, r0, #0xf00
-1: mcr p15, 0, r0, c8, c7, 1 @ invalidate UTLB entry
- add r0, r0, #PAGE_SZ
- cmp r0, r1
- blo 1b
- mcr p15, 0, r3, c7, c10, 4 @ data write barrier
- mcr p15, 0, r3, c7, c5, 4 @ prefetch flush (isb)
- mov pc, lr
-
- __INITDATA
-
- /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */
- define_tlb_functions fa, fa_tlb_flags
--
1.8.1.2
--
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