diff options
Diffstat (limited to 'arch/sparc/cpu/leon2/cpu_init.c')
| -rw-r--r-- | arch/sparc/cpu/leon2/cpu_init.c | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/arch/sparc/cpu/leon2/cpu_init.c b/arch/sparc/cpu/leon2/cpu_init.c index 5630b09..b4d91e5 100644 --- a/arch/sparc/cpu/leon2/cpu_init.c +++ b/arch/sparc/cpu/leon2/cpu_init.c @@ -10,6 +10,7 @@ #include <common.h> #include <asm/asi.h> #include <asm/leon.h> +#include <asm/io.h> #include <config.h> @@ -54,6 +55,9 @@ void cpu_init_f(void) #else leon2->PIO_Interrupt = 0; #endif + + /* disable timers */ + leon2->Timer_Control_1 = leon2->Timer_Control_2 = 0; } int arch_cpu_init(void) @@ -66,17 +70,11 @@ int arch_cpu_init(void) } /* - * initialize higher level parts of CPU like time base and timers + * initialize higher level parts of CPU */ int cpu_init_r(void) { - LEON2_regs *leon2 = (LEON2_regs *) LEON2_PREGS; - - /* initialize prescaler common to all timers to 1MHz */ - leon2->Scaler_Counter = leon2->Scaler_Reload = - (((CONFIG_SYS_CLK_FREQ / 1000) + 500) / 1000) - 1; - - return (0); + return 0; } /* Uses Timer 0 to get accurate @@ -106,11 +104,6 @@ int timer_interrupt_init_cpu(void) return LEON2_TIMER1_IRQNO; } -ulong get_tbclk(void) -{ - return TIMER_BASE_CLK; -} - /* * This function is intended for SHORT delays only. */ @@ -125,3 +118,21 @@ unsigned long cpu_ticks2usec(unsigned long ticks) { return ticks * US_PER_TICK; } + +int timer_init(void) +{ + LEON2_regs *leon2 = (LEON2_regs *)LEON2_PREGS; + + /* initialize prescaler common to all timers to 1MHz */ + leon2->Scaler_Counter = leon2->Scaler_Reload = + (((CONFIG_SYS_CLK_FREQ / 1000) + 500) / 1000) - 1; + + /* SYS_HZ ticks per second */ + leon2->Timer_Counter_1 = 0; + leon2->Timer_Reload_1 = (CONFIG_SYS_TIMER_RATE / CONFIG_SYS_HZ) - 1; + leon2->Timer_Control_1 = LEON2_TIMER_CTRL_EN | LEON2_TIMER_CTRL_RS | + LEON2_TIMER_CTRL_LD; + + CONFIG_SYS_TIMER_COUNTER = (void *)&leon2->Timer_Counter_1; + return 0; +} |