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| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/arch/avr32/lib/interrupts.c | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/u-boot/arch/avr32/lib/interrupts.c')
| -rw-r--r-- | roms/u-boot/arch/avr32/lib/interrupts.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/roms/u-boot/arch/avr32/lib/interrupts.c b/roms/u-boot/arch/avr32/lib/interrupts.c new file mode 100644 index 00000000..bacb2d18 --- /dev/null +++ b/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); +} |