sh: Provide common CPU headers, prune the SH-2 and SH-2A directories.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

13 files changed, 23 insertions, 210 deletions

diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index fb3b65ed2910..fafc01236f6a 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -91,7 +91,6 @@ LDFLAGS_vmlinux		+= --defsym 'jiffies=jiffies_64+4'
 LDFLAGS                 += -EB
 endif
 
-
 head-y                  := arch/sh/kernel/init_task.o
 head-$(CONFIG_SUPERH32) += arch/sh/kernel/head_32.o
 head-$(CONFIG_SUPERH64) += arch/sh/kernel/head_64.o
@@ -134,11 +133,22 @@ endif
 # Companion chips
 core-$(CONFIG_HD6446X_SERIES)   += arch/sh/cchips/hd6446x/
 
-cpuincdir-$(CONFIG_CPU_SH2)     := cpu-sh2
-cpuincdir-$(CONFIG_CPU_SH2A)    := cpu-sh2a
-cpuincdir-$(CONFIG_CPU_SH3)     := cpu-sh3
-cpuincdir-$(CONFIG_CPU_SH4)     := cpu-sh4
-cpuincdir-$(CONFIG_CPU_SH5)     := cpu-sh5
+#
+# CPU header paths
+#
+# These are ordered by optimization level. A CPU family that is a subset
+# of another (ie, SH-2A / SH-2), is picked up first, with increasing
+# levels of genericness if nothing more suitable is situated in the
+# hierarchy.
+#
+# As an example, in order of preference, SH-2A > SH-2 > common definitions.
+#
+cpuincdir-$(CONFIG_CPU_SH2A)    += cpu-sh2a
+cpuincdir-$(CONFIG_CPU_SH2)     += cpu-sh2
+cpuincdir-$(CONFIG_CPU_SH3)     += cpu-sh3
+cpuincdir-$(CONFIG_CPU_SH4)     += cpu-sh4
+cpuincdir-$(CONFIG_CPU_SH5)     += cpu-sh5
+cpuincdir-y                     += cpu-common   # Must be last
 
 libs-$(CONFIG_SUPERH32)         := arch/sh/lib/ $(libs-y)
 libs-$(CONFIG_SUPERH64)         := arch/sh/lib64/ $(libs-y)
@@ -149,8 +159,8 @@ drivers-$(CONFIG_OPROFILE)	+= arch/sh/oprofile/
 
 boot := arch/sh/boot
 
-cflags-y        += -Iarch/sh/include/$(cpuincdir-y)
-cflags-y        += $(foreach d, $(machdir-y), -Iarch/sh/include/$(d))
+cflags-y        += $(foreach d, $(cpuincdir-y), -Iarch/sh/include/$(d)) \
+                   $(foreach d, $(machdir-y), -Iarch/sh/include/$(d))
 
 KBUILD_CFLAGS           += -pipe $(cflags-y)
 KBUILD_CPPFLAGS         += $(cflags-y)
diff --git a/arch/sh/include/cpu-sh2/cpu/addrspace.h b/arch/sh/include/cpu-common/cpu/addrspace.h
index 2b9ab93efa4e..2b9ab93efa4e 100644
--- a/arch/sh/include/cpu-sh2/cpu/addrspace.h
+++ b/arch/sh/include/cpu-common/cpu/addrspace.h
diff --git a/arch/sh/include/cpu-sh2a/cpu/cacheflush.h b/arch/sh/include/cpu-common/cpu/cacheflush.h
index 2979efb26de3..c3db00b73605 100644
--- a/arch/sh/include/cpu-sh2a/cpu/cacheflush.h
+++ b/arch/sh/include/cpu-common/cpu/cacheflush.h
@@ -10,7 +10,7 @@
 #ifndef __ASM_CPU_SH2_CACHEFLUSH_H
 #define __ASM_CPU_SH2_CACHEFLUSH_H
 
-/* 
+/*
  * Cache flushing:
  *
  *  - flush_cache_all() flushes entire cache
@@ -40,5 +40,5 @@
 #define flush_cache_sigtramp(vaddr)             do { } while (0)
 
 #define p3_cache_init()                         do { } while (0)
-#endif /* __ASM_CPU_SH2_CACHEFLUSH_H */
 
+#endif /* __ASM_CPU_SH2_CACHEFLUSH_H */
diff --git a/arch/sh/include/cpu-sh2/cpu/mmu_context.h b/arch/sh/include/cpu-common/cpu/mmu_context.h
index beeb299e01ec..beeb299e01ec 100644
--- a/arch/sh/include/cpu-sh2/cpu/mmu_context.h
+++ b/arch/sh/include/cpu-common/cpu/mmu_context.h
diff --git a/arch/sh/include/cpu-sh2/cpu/sigcontext.h b/arch/sh/include/cpu-common/cpu/sigcontext.h
index fe5c15dd6e87..fe5c15dd6e87 100644
--- a/arch/sh/include/cpu-sh2/cpu/sigcontext.h
+++ b/arch/sh/include/cpu-common/cpu/sigcontext.h
diff --git a/arch/sh/include/cpu-sh2/cpu/timer.h b/arch/sh/include/cpu-common/cpu/timer.h
index a39c241e8195..a39c241e8195 100644
--- a/arch/sh/include/cpu-sh2/cpu/timer.h
+++ b/arch/sh/include/cpu-common/cpu/timer.h
diff --git a/arch/sh/include/cpu-sh2/cpu/cacheflush.h b/arch/sh/include/cpu-sh2/cpu/cacheflush.h
deleted file mode 100644
index 2979efb26de3..000000000000
--- a/arch/sh/include/cpu-sh2/cpu/cacheflush.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * include/asm-sh/cpu-sh2/cacheflush.h
- *
- * Copyright (C) 2003 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASM_CPU_SH2_CACHEFLUSH_H
-#define __ASM_CPU_SH2_CACHEFLUSH_H
-
-/* 
- * Cache flushing:
- *
- *  - flush_cache_all() flushes entire cache
- *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
- *  - flush_cache_dup mm(mm) handles cache flushing when forking
- *  - flush_cache_page(mm, vmaddr, pfn) flushes a single page
- *  - flush_cache_range(vma, start, end) flushes a range of pages
- *
- *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
- *  - flush_icache_range(start, end) flushes(invalidates) a range for icache
- *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
- *
- *  Caches are indexed (effectively) by physical address on SH-2, so
- *  we don't need them.
- */
-#define flush_cache_all()                       do { } while (0)
-#define flush_cache_mm(mm)                      do { } while (0)
-#define flush_cache_dup_mm(mm)                  do { } while (0)
-#define flush_cache_range(vma, start, end)      do { } while (0)
-#define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
-#define flush_dcache_page(page)                 do { } while (0)
-#define flush_dcache_mmap_lock(mapping)         do { } while (0)
-#define flush_dcache_mmap_unlock(mapping)       do { } while (0)
-#define flush_icache_range(start, end)          do { } while (0)
-#define flush_icache_page(vma,pg)               do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
-#define flush_cache_sigtramp(vaddr)             do { } while (0)
-
-#define p3_cache_init()                         do { } while (0)
-#endif /* __ASM_CPU_SH2_CACHEFLUSH_H */
-
diff --git a/arch/sh/include/cpu-sh2a/cpu/addrspace.h b/arch/sh/include/cpu-sh2a/cpu/addrspace.h
deleted file mode 100644
index 795ddd6856a3..000000000000
--- a/arch/sh/include/cpu-sh2a/cpu/addrspace.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef __ASM_SH_CPU_SH2A_ADDRSPACE_H
-#define __ASM_SH_CPU_SH2A_ADDRSPACE_H
-
-#define P0SEG           0x00000000
-#define P1SEG           0x00000000
-#define P2SEG           0x20000000
-#define P3SEG           0x00000000
-#define P4SEG           0x80000000
-
-#endif /* __ASM_SH_CPU_SH2A_ADDRSPACE_H */
diff --git a/arch/sh/include/cpu-sh2a/cpu/dma.h b/arch/sh/include/cpu-sh2a/cpu/dma.h
index d66b43cdc637..27a13ef4fdfc 100644
--- a/arch/sh/include/cpu-sh2a/cpu/dma.h
+++ b/arch/sh/include/cpu-sh2a/cpu/dma.h
@@ -1,23 +1 @@
-/*
- * Definitions for the SH-2 DMAC.
- *
- * Copyright (C) 2003  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASM_CPU_SH2_DMA_H
-#define __ASM_CPU_SH2_DMA_H
-
-#define SH_MAX_DMA_CHANNELS     2
-
-#define SAR     ((unsigned long[]){ 0xffffff80, 0xffffff90 })
-#define DAR     ((unsigned long[]){ 0xffffff84, 0xffffff94 })
-#define DMATCR  ((unsigned long[]){ 0xffffff88, 0xffffff98 })
-#define CHCR    ((unsigned long[]){ 0xfffffffc, 0xffffff9c })
-
-#define DMAOR   0xffffffb0
-
-#endif /* __ASM_CPU_SH2_DMA_H */
-
+#include <cpu-sh2/cpu/dma.h>
diff --git a/arch/sh/include/cpu-sh2a/cpu/mmu_context.h b/arch/sh/include/cpu-sh2a/cpu/mmu_context.h
deleted file mode 100644
index beeb299e01ec..000000000000
--- a/arch/sh/include/cpu-sh2a/cpu/mmu_context.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * include/asm-sh/cpu-sh2/mmu_context.h
- *
- * Copyright (C) 2003  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASM_CPU_SH2_MMU_CONTEXT_H
-#define __ASM_CPU_SH2_MMU_CONTEXT_H
-
-/* No MMU */
-
-#endif /* __ASM_CPU_SH2_MMU_CONTEXT_H */
-
diff --git a/arch/sh/include/cpu-sh2a/cpu/timer.h b/arch/sh/include/cpu-sh2a/cpu/timer.h
deleted file mode 100644
index a39c241e8195..000000000000
--- a/arch/sh/include/cpu-sh2a/cpu/timer.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __ASM_CPU_SH2_TIMER_H
-#define __ASM_CPU_SH2_TIMER_H
-
-/* Nothing needed yet */
-
-#endif /* __ASM_CPU_SH2_TIMER_H */
diff --git a/arch/sh/include/cpu-sh2a/cpu/ubc.h b/arch/sh/include/cpu-sh2a/cpu/ubc.h
index ba0e87f19c7a..8ce2fc1cf625 100644
--- a/arch/sh/include/cpu-sh2a/cpu/ubc.h
+++ b/arch/sh/include/cpu-sh2a/cpu/ubc.h
@@ -1,32 +1 @@
-/*
- * include/asm-sh/cpu-sh2/ubc.h
- *
- * Copyright (C) 2003 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASM_CPU_SH2_UBC_H
-#define __ASM_CPU_SH2_UBC_H
-
-#define UBC_BARA                0xffffff40
-#define UBC_BAMRA               0xffffff44
-#define UBC_BBRA                0xffffff48
-#define UBC_BARB                0xffffff60
-#define UBC_BAMRB               0xffffff64
-#define UBC_BBRB                0xffffff68
-#define UBC_BDRB                0xffffff70
-#define UBC_BDMRB               0xffffff74
-#define UBC_BRCR                0xffffff78
-
-/*
- * We don't have any ASID changes to make in the UBC on the SH-2.
- *
- * Make these purposely invalid to track misuse.
- */
-#define UBC_BASRA               0x00000000
-#define UBC_BASRB               0x00000000
-
-#endif /* __ASM_CPU_SH2_UBC_H */
-
+#include <cpu-sh2/cpu/ubc.h>
diff --git a/arch/sh/include/cpu-sh2a/cpu/watchdog.h b/arch/sh/include/cpu-sh2a/cpu/watchdog.h
index 393161c9c6d0..e7e8259e468c 100644
--- a/arch/sh/include/cpu-sh2a/cpu/watchdog.h
+++ b/arch/sh/include/cpu-sh2a/cpu/watchdog.h
@@ -1,69 +1 @@
-/*
- * include/asm-sh/cpu-sh2/watchdog.h
- *
- * Copyright (C) 2002, 2003 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASM_CPU_SH2_WATCHDOG_H
-#define __ASM_CPU_SH2_WATCHDOG_H
-
-/*
- * More SH-2 brilliance .. its not good enough that we can't read
- * and write the same sizes to WTCNT, now we have to read and write
- * with different sizes at different addresses for WTCNT _and_ RSTCSR.
- *
- * At least on the bright side no one has managed to screw over WTCSR
- * in this fashion .. yet.
- */
-/* Register definitions */
-#define WTCNT           0xfffffe80
-#define WTCSR           0xfffffe80
-#define RSTCSR          0xfffffe82
-
-#define WTCNT_R         (WTCNT + 1)
-#define RSTCSR_R        (RSTCSR + 1)
-
-/* Bit definitions */
-#define WTCSR_IOVF      0x80
-#define WTCSR_WT        0x40
-#define WTCSR_TME       0x20
-#define WTCSR_RSTS      0x00
-
-#define RSTCSR_RSTS     0x20
-
-/**
- *      sh_wdt_read_rstcsr - Read from Reset Control/Status Register
- *
- *      Reads back the RSTCSR value.
- */
-static inline __u8 sh_wdt_read_rstcsr(void)
-{
-        /*
-         * Same read/write brain-damage as for WTCNT here..
-         */
-        return ctrl_inb(RSTCSR_R);
-}
-
-/**
- *      sh_wdt_write_csr - Write to Reset Control/Status Register
- *
- *      @val: Value to write
- *
- *      Writes the given value @val to the lower byte of the control/status
- *      register. The upper byte is set manually on each write.
- */
-static inline void sh_wdt_write_rstcsr(__u8 val)
-{
-        /*
-         * Note: Due to the brain-damaged nature of this register,
-         * we can't presently touch the WOVF bit, since the upper byte
-         * has to be swapped for this. So just leave it alone..
-         */
-        ctrl_outw((WTCNT_HIGH << 8) | (__u16)val, RSTCSR);
-}
-
-#endif /* __ASM_CPU_SH2_WATCHDOG_H */
-
+#include <cpu-sh2/cpu/watchdog.h>