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authorMichal Simek <monstr@monstr.eu>2009-03-27 14:25:37 +0100
committerMichal Simek <monstr@monstr.eu>2009-03-27 14:25:37 +0100
commit4511ec153afd132da9f4308e7db394820eb52129 (patch)
tree4930333220379143a2844138e254dda61d916f6a /arch
parent6a3cece5e5e7e7c0fde769d7cf065fb8aef6e54e (diff)
microblaze_v8: system.h processor.h
Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch')
-rw-r--r--arch/microblaze/include/asm/processor.h93
-rw-r--r--arch/microblaze/include/asm/system.h91
2 files changed, 184 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
new file mode 100644
index 00000000000..d8e15434ba2
--- /dev/null
+++ b/arch/microblaze/include/asm/processor.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2008 Michal Simek
+ * Copyright (C) 2008 PetaLogix
+ * 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_PROCESSOR_H
+#define _ASM_MICROBLAZE_PROCESSOR_H
+
+#include <asm/ptrace.h>
+#include <asm/setup.h>
+#include <asm/registers.h>
+#include <asm/segment.h>
+
+# ifndef __ASSEMBLY__
+/* from kernel/cpu/mb.c */
+extern const struct seq_operations cpuinfo_op;
+
+# define cpu_relax() barrier()
+# define cpu_sleep() do {} while (0)
+# define prepare_to_copy(tsk) do {} while (0)
+
+# endif /* __ASSEMBLY__ */
+
+/*
+ * User space process size: memory size
+ *
+ * TASK_SIZE on MMU cpu is usually 1GB. However, on no-MMU arch, both
+ * user processes and the kernel is on the same memory region. They
+ * both share the memory space and that is limited by the amount of
+ * physical memory. thus, we set TASK_SIZE == amount of total memory.
+ */
+# define TASK_SIZE (0x81000000 - 0x80000000)
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+# define current_text_addr() ({ __label__ _l; _l: &&_l; })
+
+/*
+ * This decides where the kernel will search for a free chunk of vm
+ * space during mmap's. We won't be using it
+ */
+# define TASK_UNMAPPED_BASE 0
+
+/* definition in include/linux/sched.h */
+struct task_struct;
+
+/* thread_struct is gone. use thread_info instead. */
+struct thread_struct { };
+# define INIT_THREAD { }
+
+/* Do necessary setup to start up a newly executed thread. */
+static inline void start_thread(struct pt_regs *regs,
+ unsigned long pc,
+ unsigned long usp)
+{
+ regs->pc = pc;
+ regs->r1 = usp;
+ regs->kernel_mode = 0;
+}
+
+/* Free all resources held by a thread. */
+static inline void release_thread(struct task_struct *dead_task)
+{
+}
+
+/* Free all resources held by a thread. */
+static inline void exit_thread(void)
+{
+}
+
+extern unsigned long thread_saved_pc(struct task_struct *t);
+
+extern unsigned long get_wchan(struct task_struct *p);
+
+/*
+ * create a kernel thread without removing it from tasklists
+ */
+extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
+
+# define task_pt_regs(tsk) \
+ (((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
+
+# define KSTK_EIP(tsk) (0)
+# define KSTK_ESP(tsk) (0)
+
+#endif /* _ASM_MICROBLAZE_PROCESSOR_H */
diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h
new file mode 100644
index 00000000000..c4e308850b5
--- /dev/null
+++ b/arch/microblaze/include/asm/system.h
@@ -0,0 +1,91 @@
+/*
+ * 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>
+
+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 show_trace(struct task_struct *task, unsigned long *stack);
+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);
+
+#ifdef CONFIG_DEBUG_FS
+extern struct dentry *of_debugfs_root;
+#endif
+
+#define arch_align_stack(x) (x)
+
+#endif /* _ASM_MICROBLAZE_SYSTEM_H */