sh: Kill off the special uncached section and fixmap.

Now that cached_to_uncached works as advertized in 32-bit mode and we're
never going to be able to map < 16MB anyways, there's no need for the
special uncached section. Kill it off.

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

15 files changed, 20 insertions, 39 deletions

diff --git a/arch/sh/include/asm/fixmap.h b/arch/sh/include/asm/fixmap.h
index 38a1de8..17b22b6c 100644
--- a/arch/sh/include/asm/fixmap.h
+++ b/arch/sh/include/asm/fixmap.h
@@ -55,11 +55,12 @@ enum fixed_addresses {
 #define FIX_N_COLOURS 8
 	FIX_CMAP_BEGIN,
 	FIX_CMAP_END = FIX_CMAP_BEGIN + (FIX_N_COLOURS * NR_CPUS) - 1,
-	FIX_UNCACHED,
+
 #ifdef CONFIG_HIGHMEM
 	FIX_KMAP_BEGIN,	/* reserved pte's for temporary kernel mappings */
 	FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
 #endif
+
 	/*
 	 * FIX_IOREMAP entries are useful for mapping physical address
 	 * space before ioremap() is useable, e.g. really early in boot
@@ -68,6 +69,7 @@ enum fixed_addresses {
 #define FIX_N_IOREMAPS	32
 	FIX_IOREMAP_BEGIN,
 	FIX_IOREMAP_END = FIX_IOREMAP_BEGIN + FIX_N_IOREMAPS,
+
 	__end_of_fixed_addresses
 };
 
diff --git a/arch/sh/include/asm/system_32.h b/arch/sh/include/asm/system_32.h
index 34bd2ba..51296b3 100644
--- a/arch/sh/include/asm/system_32.h
+++ b/arch/sh/include/asm/system_32.h
@@ -145,9 +145,6 @@ do {								\
 		__restore_dsp(prev);				\
 } while (0)
 
-#define __uses_jump_to_uncached \
-	noinline __attribute__ ((__section__ (".uncached.text")))
-
 /*
  * Jump to uncached area.
  * When handling TLB or caches, we need to do it from an uncached area.
diff --git a/arch/sh/include/asm/system_64.h b/arch/sh/include/asm/system_64.h
index 604ba78..3391bb6 100644
--- a/arch/sh/include/asm/system_64.h
+++ b/arch/sh/include/asm/system_64.h
@@ -33,8 +33,6 @@ do {								\
 			      &next->thread);			\
 } while (0)
 
-#define __uses_jump_to_uncached
-
 #define jump_to_uncached()	do { } while (0)
 #define back_to_cached()	do { } while (0)
 
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c
index a5bb055..05a7d2a 100644
--- a/arch/sh/kernel/cpu/init.c
+++ b/arch/sh/kernel/cpu/init.c
@@ -98,7 +98,7 @@ static void __init expmask_init(void)
 #endif
 
 /* 2nd-level cache init */
-void __uses_jump_to_uncached __attribute__ ((weak)) l2_cache_init(void)
+void __attribute__ ((weak)) l2_cache_init(void)
 {
 }
 
@@ -106,7 +106,7 @@ void __uses_jump_to_uncached __attribute__ ((weak)) l2_cache_init(void)
  * Generic first-level cache init
  */
 #ifdef CONFIG_SUPERH32
-static void __uses_jump_to_uncached cache_init(void)
+static void cache_init(void)
 {
 	unsigned long ccr, flags;
 
diff --git a/arch/sh/kernel/cpu/sh3/probe.c b/arch/sh/kernel/cpu/sh3/probe.c
index f9c7df6..c2db657 100644
--- a/arch/sh/kernel/cpu/sh3/probe.c
+++ b/arch/sh/kernel/cpu/sh3/probe.c
@@ -16,7 +16,7 @@
 #include <asm/cache.h>
 #include <asm/io.h>
 
-int __uses_jump_to_uncached detect_cpu_and_cache_system(void)
+int detect_cpu_and_cache_system(void)
 {
 	unsigned long addr0, addr1, data0, data1, data2, data3;
 
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7723.c b/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
index 772b926..9d42625 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
@@ -592,7 +592,8 @@ void __init plat_early_device_setup(void)
 #define RAMCR_CACHE_L2FC	0x0002
 #define RAMCR_CACHE_L2E		0x0001
 #define L2_CACHE_ENABLE		(RAMCR_CACHE_L2E|RAMCR_CACHE_L2FC)
-void __uses_jump_to_uncached l2_cache_init(void)
+
+void l2_cache_init(void)
 {
 	/* Enable L2 cache */
 	ctrl_outl(L2_CACHE_ENABLE, RAMCR);
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7724.c b/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
index d32f96c..578e9f8 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
@@ -714,7 +714,8 @@ void __init plat_early_device_setup(void)
 #define RAMCR_CACHE_L2FC	0x0002
 #define RAMCR_CACHE_L2E		0x0001
 #define L2_CACHE_ENABLE		(RAMCR_CACHE_L2E|RAMCR_CACHE_L2FC)
-void __uses_jump_to_uncached l2_cache_init(void)
+
+void l2_cache_init(void)
 {
 	/* Enable L2 cache */
 	ctrl_outl(L2_CACHE_ENABLE, RAMCR);
diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S
index 9e5a587..93e9b25 100644
--- a/arch/sh/kernel/vmlinux.lds.S
+++ b/arch/sh/kernel/vmlinux.lds.S
@@ -53,18 +53,6 @@ SECTIONS
 
 	NOTES
 	RO_DATA(PAGE_SIZE)
-
-	/*
-	 * Code which must be executed uncached and the associated data
-	 */
-	. = ALIGN(PAGE_SIZE);
-	.uncached : AT(ADDR(.uncached) - LOAD_OFFSET) {
-		__uncached_start = .;
-		*(.uncached.text)
-		*(.uncached.data)
-		__uncached_end = .;
-	}
-
 	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 
 	_edata = .;			/* End of data section */
diff --git a/arch/sh/mm/cache-debugfs.c b/arch/sh/mm/cache-debugfs.c
index 5ba067b..48ce82e 100644
--- a/arch/sh/mm/cache-debugfs.c
+++ b/arch/sh/mm/cache-debugfs.c
@@ -22,8 +22,7 @@ enum cache_type {
 	CACHE_TYPE_UNIFIED,
 };
 
-static int __uses_jump_to_uncached cache_seq_show(struct seq_file *file,
-						  void *iter)
+static int cache_seq_show(struct seq_file *file, void *iter)
 {
 	unsigned int cache_type = (unsigned int)file->private;
 	struct cache_info *cache;
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index a2301da..87115b3 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -36,7 +36,7 @@ static void __flush_cache_one(unsigned long addr, unsigned long phys,
  * Called from kernel/module.c:sys_init_module and routine for a.out format,
  * signal handler code and kprobes code
  */
-static void __uses_jump_to_uncached sh4_flush_icache_range(void *args)
+static void sh4_flush_icache_range(void *args)
 {
 	struct flusher_data *data = args;
 	unsigned long start, end;
@@ -124,7 +124,7 @@ static void sh4_flush_dcache_page(void *arg)
 }
 
 /* TODO: Selective icache invalidation through IC address array.. */
-static void __uses_jump_to_uncached flush_icache_all(void)
+static void flush_icache_all(void)
 {
 	unsigned long flags, ccr;
 
diff --git a/arch/sh/mm/cache-sh7705.c b/arch/sh/mm/cache-sh7705.c
index f527fb7..870293e 100644
--- a/arch/sh/mm/cache-sh7705.c
+++ b/arch/sh/mm/cache-sh7705.c
@@ -78,7 +78,7 @@ static void sh7705_flush_icache_range(void *args)
 /*
  * Writeback&Invalidate the D-cache of the page
  */
-static void __uses_jump_to_uncached __flush_dcache_page(unsigned long phys)
+static void __flush_dcache_page(unsigned long phys)
 {
 	unsigned long ways, waysize, addrstart;
 	unsigned long flags;
@@ -144,7 +144,7 @@ static void sh7705_flush_dcache_page(void *arg)
 		__flush_dcache_page(__pa(page_address(page)));
 }
 
-static void __uses_jump_to_uncached sh7705_flush_cache_all(void *args)
+static void sh7705_flush_cache_all(void *args)
 {
 	unsigned long flags;
 
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index a28ff63..dffa6c7 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -211,9 +211,6 @@ void __init paging_init(void)
 	}
 
 	free_area_init_nodes(max_zone_pfns);
-
-	/* Set up the uncached fixmap */
-	set_fixmap_nocache(FIX_UNCACHED, __pa(&__uncached_start));
 }
 
 /*
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index d318fa6..3d5eece 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -127,14 +127,14 @@ static void __set_pmb_entry(unsigned long vpn, unsigned long ppn,
 	ctrl_outl(ppn | flags | PMB_V, mk_pmb_data(pos));
 }
 
-static void __uses_jump_to_uncached set_pmb_entry(struct pmb_entry *pmbe)
+static void set_pmb_entry(struct pmb_entry *pmbe)
 {
 	jump_to_uncached();
 	__set_pmb_entry(pmbe->vpn, pmbe->ppn, pmbe->flags, pmbe->entry);
 	back_to_cached();
 }
 
-static void __uses_jump_to_uncached clear_pmb_entry(struct pmb_entry *pmbe)
+static void clear_pmb_entry(struct pmb_entry *pmbe)
 {
 	unsigned int entry = pmbe->entry;
 	unsigned long addr;
@@ -364,7 +364,7 @@ static inline int pmb_apply_legacy_mappings(void)
 }
 #endif
 
-int __uses_jump_to_uncached pmb_init(void)
+int pmb_init(void)
 {
 	int i;
 	unsigned long addr, data;
diff --git a/arch/sh/mm/tlb-pteaex.c b/arch/sh/mm/tlb-pteaex.c
index 409b7c2..32dc674 100644
--- a/arch/sh/mm/tlb-pteaex.c
+++ b/arch/sh/mm/tlb-pteaex.c
@@ -68,8 +68,7 @@ void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
  * in extended mode, the legacy 8-bit ASID field in address array 1 has
  * undefined behaviour.
  */
-void __uses_jump_to_uncached local_flush_tlb_one(unsigned long asid,
-						 unsigned long page)
+void local_flush_tlb_one(unsigned long asid, unsigned long page)
 {
 	jump_to_uncached();
 	__raw_writel(page, MMU_UTLB_ADDRESS_ARRAY | MMU_PAGE_ASSOC_BIT);
diff --git a/arch/sh/mm/tlb-sh4.c b/arch/sh/mm/tlb-sh4.c
index 8cf550e..624c1da 100644
--- a/arch/sh/mm/tlb-sh4.c
+++ b/arch/sh/mm/tlb-sh4.c
@@ -64,8 +64,7 @@ void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
 	local_irq_restore(flags);
 }
 
-void __uses_jump_to_uncached local_flush_tlb_one(unsigned long asid,
-						 unsigned long page)
+void local_flush_tlb_one(unsigned long asid, unsigned long page)
 {
 	unsigned long addr, data;