diff options
Diffstat (limited to 'qemu/roms/u-boot/arch/nds32/cpu/n1213/ag102/watchdog.S')
| -rw-r--r-- | qemu/roms/u-boot/arch/nds32/cpu/n1213/ag102/watchdog.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/nds32/cpu/n1213/ag102/watchdog.S b/qemu/roms/u-boot/arch/nds32/cpu/n1213/ag102/watchdog.S new file mode 100644 index 000000000..8f450af13 --- /dev/null +++ b/qemu/roms/u-boot/arch/nds32/cpu/n1213/ag102/watchdog.S @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm/arch-ag102/ag102.h> +#include <linux/linkage.h> + +.text + +#ifndef CONFIG_SKIP_TRUNOFF_WATCHDOG +ENTRY(turnoff_watchdog) + +#define WD_CR 0xC +#define WD_ENABLE 0x1 + + ! Turn off the watchdog, according to Faraday FTWDT010 spec + li $p0, (CONFIG_FTWDT010_BASE+WD_CR) ! Get the addr of WD CR + lwi $p1, [$p0] ! Get the config of WD + andi $p1, $p1, 0x1f ! Wipe out useless bits + li $r0, ~WD_ENABLE + and $p1, $p1, $r0 ! Set WD disable + sw $p1, [$p0] ! Write back to WD CR + + ! Disable Interrupts by clear GIE in $PSW reg + setgie.d + + ret + +ENDPROC(turnoff_watchdog) +#endif |