Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / nds32 / include / asm / system.h

diff --git a/qemu/roms/u-boot/arch/nds32/include/asm/system.h b/qemu/roms/u-boot/arch/nds32/include/asm/system.h
new file mode 100644 (file)
index 0000000..007e66b
--- /dev/null
+++ b/qemu/roms/u-boot/arch/nds32/include/asm/system.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef __ASM_NDS_SYSTEM_H
+#define __ASM_NDS_SYSTEM_H
+
+/*
+ * Interrupt configuring macros.
+ */
+
+extern int irq_flags;
+
+#define local_irq_enable() \
+       __asm__ __volatile__ ( \
+               "mfsr   %0, $psw\n\t" \
+               "andi   %0, %0, 0x1\n\t" \
+               "setgie.e\n\t" \
+               : \
+               : "r" (irq_flags) \
+       )
+
+#define local_irq_disable() \
+       do { \
+               int __tmp_dummy; \
+               __asm__ __volatile__ ( \
+                       "mfsr   %0, $psw\n\t" \
+                       "andi   %0, %0, 0x1\n\t" \
+                       "setgie.d\n\t" \
+                       "dsb\n\t" \
+                       : "=r" (__tmp_dummy) \
+               ); \
+       } while (0)
+
+#define local_irq_save(x) \
+       __asm__ __volatile__ ( \
+               "mfsr   %0, $psw\n\t" \
+               "andi   %0, %0, 0x1\n\t" \
+               "setgie.d\n\t" \
+               "dsb\n\t" \
+               : "=&r" (x) \
+       )
+
+#define local_save_flags(x) \
+       __asm__ __volatile__ ( \
+               "mfsr   %0, $psw\n\t" \
+               "andi   %0, %0, 0x1\n\t" \
+               "setgie.e\n\t" \
+               "setgie.d\n\t" \
+               : "=r" (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")
+
+#endif /* __ASM_NDS_SYSTEM_H */