summaryrefslogtreecommitdiffstats
path: root/arch/sh/mm/nommu.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 09:43:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 09:43:09 -0700
commit515b696b282f856c3ad1679ccd658120faa387d0 (patch)
treed9d7c1185c396617f128ca23463062308d11393b /arch/sh/mm/nommu.c
parentfa877c71e2136bd682b45022c96d5e073ced9f58 (diff)
parent064a16dc41be879d12bd5de5d2f9d38d890e0ee7 (diff)
downloadlinux-515b696b282f856c3ad1679ccd658120faa387d0.tar.bz2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (262 commits) sh: mach-ecovec24: Add user debug switch support sh: Kill off unused se_skipped in alignment trap notification code. sh: Wire up HAVE_SYSCALL_TRACEPOINTS. video: sh_mobile_lcdcfb: use both register sets for display panning video: sh_mobile_lcdcfb: implement display panning sh: Fix up sh7705 flush_dcache_page() build. sh: kfr2r09: document the PLL/FLL <-> RF relationship. sh: mach-ecovec24: need asm/clock.h. sh: mach-ecovec24: deassert usb irq on boot. sh: Add KEYSC support for EcoVec24 sh: add kycr2_delay for sh_keysc sh: cpufreq: Include CPU id in info messages. sh: multi-evt support for SH-X3 proto CPU. sh: clkfwk: remove bogus set_bus_parent() from SH7709. sh: Fix the indication point of the liquid crystal of AP-325RXA(AP3300) sh: Add EcoVec24 romImage defconfig sh: USB disable process is needed if romImage boot for EcoVec24 sh: EcoVec24: add HIZA setting for LED sh: EcoVec24: write MAC address in boot sh: Add romImage support for EcoVec24 ...
Diffstat (limited to 'arch/sh/mm/nommu.c')
-rw-r--r--arch/sh/mm/nommu.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/arch/sh/mm/nommu.c b/arch/sh/mm/nommu.c
new file mode 100644
index 000000000000..ac16c05917ef
--- /dev/null
+++ b/arch/sh/mm/nommu.c
@@ -0,0 +1,96 @@
+/*
+ * arch/sh/mm/nommu.c
+ *
+ * Various helper routines and stubs for MMUless SH.
+ *
+ * Copyright (C) 2002 - 2009 Paul Mundt
+ *
+ * Released under the terms of the GNU GPL v2.0.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <asm/pgtable.h>
+#include <asm/tlbflush.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+
+/*
+ * Nothing too terribly exciting here ..
+ */
+void copy_page(void *to, void *from)
+{
+ memcpy(to, from, PAGE_SIZE);
+}
+
+__kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n)
+{
+ memcpy(to, from, n);
+ return 0;
+}
+
+__kernel_size_t __clear_user(void *to, __kernel_size_t n)
+{
+ memset(to, 0, n);
+ return 0;
+}
+
+void local_flush_tlb_all(void)
+{
+ BUG();
+}
+
+void local_flush_tlb_mm(struct mm_struct *mm)
+{
+ BUG();
+}
+
+void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end)
+{
+ BUG();
+}
+
+void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
+{
+ BUG();
+}
+
+void local_flush_tlb_one(unsigned long asid, unsigned long page)
+{
+ BUG();
+}
+
+void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+ BUG();
+}
+
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+{
+}
+
+void __init kmap_coherent_init(void)
+{
+}
+
+void *kmap_coherent(struct page *page, unsigned long addr)
+{
+ BUG();
+ return NULL;
+}
+
+void kunmap_coherent(void *kvaddr)
+{
+ BUG();
+}
+
+void __init page_table_range_init(unsigned long start, unsigned long end,
+ pgd_t *pgd_base)
+{
+}
+
+void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
+{
+}