Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / avr32 / lib / interrupts.c

diff --git a/qemu/roms/u-boot/arch/avr32/lib/interrupts.c b/qemu/roms/u-boot/arch/avr32/lib/interrupts.c
new file mode 100644 (file)
index 0000000..bacb2d1
--- /dev/null
+++ b/qemu/roms/u-boot/arch/avr32/lib/interrupts.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+#include <common.h>
+
+#include <asm/sysreg.h>
+
+void enable_interrupts(void)
+{
+       asm volatile("csrf      %0" : : "n"(SYSREG_GM_OFFSET));
+}
+
+int disable_interrupts(void)
+{
+       unsigned long sr;
+
+       sr = sysreg_read(SR);
+       asm volatile("ssrf      %0" : : "n"(SYSREG_GM_OFFSET));
+
+#ifdef CONFIG_AT32UC3A0xxx
+       /* Two NOPs are required after masking interrupts on the
+        * AT32UC3A0512ES. See errata 41.4.5.5. */
+       asm("nop");
+       asm("nop");
+#endif
+
+       return !SYSREG_BFEXT(GM, sr);
+}