diff options
| -rw-r--r-- | arch/arm/cpu/arm926ejs/at91/cpu.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm926ejs/at91/cpu.c b/arch/arm/cpu/arm926ejs/at91/cpu.c index 087fe95..5e30f1d 100644 --- a/arch/arm/cpu/arm926ejs/at91/cpu.c +++ b/arch/arm/cpu/arm926ejs/at91/cpu.c @@ -27,6 +27,7 @@ #include <asm/arch/hardware.h> #include <asm/arch/at91_pmc.h> +#include <asm/arch/at91_pit.h> #include <asm/arch/at91_gpbr.h> #include <asm/arch/clk.h> #include <asm/arch/io.h> @@ -40,6 +41,21 @@ int arch_cpu_init(void) return at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK); } +void arch_preboot_os(void) +{ + ulong cpiv; + at91_pit_t *pit = (at91_pit_t *) AT91_PIT_BASE; + + cpiv = AT91_PIT_MR_PIV_MASK(readl(&pit->piir)); + + /* + * Disable PITC + * Add 0x1000 to current counter to stop it faster + * without waiting for wrapping back to 0 + */ + writel(cpiv + 0x1000, &pit->mr); +} + #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo(void) { |