1 files changed, 106 insertions, 0 deletions

diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h
new file mode 100644
index 00000000000..e6a2284571d
--- /dev/null
+++ b/arch/microblaze/include/asm/system.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * 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_MICROBLAZE_SYSTEM_H
+#define _ASM_MICROBLAZE_SYSTEM_H
+
+#include <asm/registers.h>
+#include <asm/setup.h>
+#include <asm/irqflags.h>
+#include <asm/cache.h>
+
+#include <asm-generic/cmpxchg.h>
+#include <asm-generic/cmpxchg-local.h>
+
+#define __ARCH_WANT_INTERRUPTS_ON_CTXSW
+
+struct task_struct;
+struct thread_info;
+
+extern struct task_struct *_switch_to(struct thread_info *prev,
+                                        struct thread_info *next);
+
+#define switch_to(prev, next, last)                                     \
+        do {                                                            \
+                (last) = _switch_to(task_thread_info(prev),             \
+                                        task_thread_info(next));        \
+        } while (0)
+
+#define smp_read_barrier_depends()      do {} while (0)
+#define read_barrier_depends()          do {} while (0)
+
+#define nop()                   asm volatile ("nop")
+#define mb()                    barrier()
+#define rmb()                   mb()
+#define wmb()                   mb()
+#define set_mb(var, value)      do { var = value; mb(); } while (0)
+#define set_wmb(var, value)     do { var = value; wmb(); } while (0)
+
+#define smp_mb()                mb()
+#define smp_rmb()               rmb()
+#define smp_wmb()               wmb()
+
+void __bad_xchg(volatile void *ptr, int size);
+
+static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
+                                                                int size)
+{
+        unsigned long ret;
+        unsigned long flags;
+
+        switch (size) {
+        case 1:
+                local_irq_save(flags);
+                ret = *(volatile unsigned char *)ptr;
+                *(volatile unsigned char *)ptr = x;
+                local_irq_restore(flags);
+                break;
+
+        case 4:
+                local_irq_save(flags);
+                ret = *(volatile unsigned long *)ptr;
+                *(volatile unsigned long *)ptr = x;
+                local_irq_restore(flags);
+                break;
+        default:
+                __bad_xchg(ptr, size), ret = 0;
+                break;
+        }
+
+        return ret;
+}
+
+void disable_hlt(void);
+void enable_hlt(void);
+void default_idle(void);
+
+#define xchg(ptr, x) \
+        ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+
+void free_init_pages(char *what, unsigned long begin, unsigned long end);
+void free_initmem(void);
+extern char *klimit;
+extern void ret_from_fork(void);
+
+extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);
+extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
+
+#ifdef CONFIG_DEBUG_FS
+extern struct dentry *of_debugfs_root;
+#endif
+
+#define arch_align_stack(x) (x)
+
+/*
+ * MicroBlaze doesn't handle unaligned accesses in hardware.
+ *
+ * Based on this we force the IP header alignment in network drivers.
+ */
+#define NET_IP_ALIGN    2
+
+#endif /* _ASM_MICROBLAZE_SYSTEM_H */