diff options
Diffstat (limited to 'arch/arm/mach-pxa/reset_source.c')
| -rw-r--r-- | arch/arm/mach-pxa/reset_source.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/reset_source.c b/arch/arm/mach-pxa/reset_source.c new file mode 100644 index 0000000000..a90584b1a6 --- /dev/null +++ b/arch/arm/mach-pxa/reset_source.c @@ -0,0 +1,41 @@ +/* + * (C) Copyright 2014 Robert Jarzmik <robert.jarzmik@free.fr> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <common.h> +#include <init.h> +#include <reset_source.h> +#include <mach/pxa-regs.h> + +static int pxa_detect_reset_source(void) +{ + u32 reg = RCSR; + + /* + * Order is important, as many bits can be set together + */ + if (reg & RCSR_GPR) + reset_source_set(RESET_RST); + else if (reg & RCSR_WDR) + reset_source_set(RESET_WDG); + else if (reg & RCSR_HWR) + reset_source_set(RESET_POR); + else if (reg & RCSR_SMR) + reset_source_set(RESET_WKE); + else + reset_source_set(RESET_UKWN); + + return 0; +} + +device_initcall(pxa_detect_reset_source); |