Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / blackfin / include / asm / system.h

diff --git a/qemu/roms/u-boot/arch/blackfin/include/asm/system.h b/qemu/roms/u-boot/arch/blackfin/include/asm/system.h
new file mode 100644 (file)
index 0000000..5a7e8ed
--- /dev/null
+++ b/qemu/roms/u-boot/arch/blackfin/include/asm/system.h
@@ -0,0 +1,107 @@
+/*
+ * U-boot - system.h
+ *
+ * Copyright (c) 2005-2007 Analog Devices Inc.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef _BLACKFIN_SYSTEM_H
+#define _BLACKFIN_SYSTEM_H
+
+/*
+ * Interrupt configuring macros.
+ */
+
+extern int irq_flags;
+
+#define local_irq_enable() \
+       __asm__ __volatile__ ( \
+               "sti %0;" \
+               : \
+               : "d" (irq_flags) \
+       )
+
+#define local_irq_disable() \
+       do { \
+               int __tmp_dummy; \
+               __asm__ __volatile__ ( \
+                       "cli %0;" \
+                       : "=d" (__tmp_dummy) \
+               ); \
+       } while (0)
+
+# define local_irq_save(x) \
+       __asm__ __volatile__ ( \
+               "cli %0;" \
+               : "=&d" (x) \
+       )
+
+#define local_save_flags(x) \
+       __asm__ __volatile__ ( \
+               "cli %0;" \
+               "sti %0;" \
+               : "=d" (x) \
+       )
+
+#define irqs_enabled_from_flags(x) ((x) != 0x1f)
+
+#define local_irq_restore(x) \
+       do { \
+               if (irqs_enabled_from_flags(x)) \
+                       local_irq_enable(); \
+       } while (0)
+
+/*
+ * Force strict CPU ordering.
+ */
+#define nop()                  asm volatile ("nop;\n\t"::)
+#define mb()                   asm volatile (""   : : :"memory")
+#define rmb()                  asm volatile (""   : : :"memory")
+#define wmb()                  asm volatile (""   : : :"memory")
+#define set_rmb(var, value)    do { xchg(&var, value); } while (0)
+#define set_mb(var, value)     set_rmb(var, value)
+#define set_wmb(var, value)    do { var = value; wmb(); } while (0)
+
+#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+
+struct __xchg_dummy {
+       unsigned long a[100];
+};
+#define __xg(x) ((volatile struct __xchg_dummy *)(x))
+
+static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
+                                  int size)
+{
+       unsigned long tmp = 0;
+       unsigned long flags = 0;
+
+       local_irq_save(flags);
+
+       switch (size) {
+       case 1:
+               __asm__ __volatile__
+                       ("%0 = b%2 (z);\n\t"
+                        "b%2 = %1;\n\t"
+                        : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
+               break;
+       case 2:
+               __asm__ __volatile__
+                       ("%0 = w%2 (z);\n\t"
+                        "w%2 = %1;\n\t"
+                        : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
+               break;
+       case 4:
+               __asm__ __volatile__
+                       ("%0 = %2;\n\t"
+                        "%2 = %1;\n\t"
+                        : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
+               break;
+       }
+       local_irq_restore(flags);
+       return tmp;
+}
+
+void bfin_reset_boot_spi_cs(unsigned short pin);
+
+#endif /* _BLACKFIN_SYSTEM_H */