diff options
Diffstat (limited to 'cpu/arm926ejs/at91sam9/timer.c')
| -rw-r--r-- | cpu/arm926ejs/at91sam9/timer.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/cpu/arm926ejs/at91sam9/timer.c b/cpu/arm926ejs/at91sam9/timer.c index 79c135f..4e79466 100644 --- a/cpu/arm926ejs/at91sam9/timer.c +++ b/cpu/arm926ejs/at91sam9/timer.c @@ -24,22 +24,24 @@ #include <common.h> #include <asm/arch/hardware.h> +#include <asm/arch/at91_pit.h> +#include <asm/arch/at91_pmc.h> +#include <asm/arch/at91_rstc.h> +#include <asm/arch/io.h> /* * We're using the AT91CAP9/SAM9 PITC in 32 bit mode, by * setting the 20 bit counter period to its maximum (0xfffff). */ #define TIMER_LOAD_VAL 0xfffff -#define READ_RESET_TIMER (AT91C_BASE_PITC->PITC_PIVR) -#define READ_TIMER (AT91C_BASE_PITC->PITC_PIIR) +#define READ_RESET_TIMER at91_sys_read(AT91_PIT_PIVR) +#define READ_TIMER at91_sys_read(AT91_PIT_PIIR) #define TIMER_FREQ (AT91C_MASTER_CLOCK << 4) #define TICKS_TO_USEC(ticks) ((ticks) / 6) ulong get_timer_masked(void); ulong resettime; -AT91PS_PITC p_pitc; - /* nothing really to do with interrupts, just starts up a counter. */ int timer_init(void) { @@ -47,13 +49,10 @@ int timer_init(void) * Enable PITC Clock * The clock is already enabled for system controller in boot */ - AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_SYS; + at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS); /* Enable PITC */ - AT91C_BASE_PITC->PITC_PIMR = AT91C_PITC_PITEN; - - /* Load PITC_PIMR with the right timer value */ - AT91C_BASE_PITC->PITC_PIMR |= TIMER_LOAD_VAL; + at91_sys_write(AT91_PIT_MR, TIMER_LOAD_VAL | AT91_PIT_PITEN); reset_timer_masked(); @@ -67,6 +66,7 @@ int timer_init(void) static inline ulong get_timer_raw(void) { ulong now = READ_TIMER; + if (now >= resettime) return now - resettime; else @@ -129,6 +129,7 @@ unsigned long long get_ticks(void) ulong get_tbclk(void) { ulong tbclk; + tbclk = CFG_HZ; return tbclk; } @@ -139,9 +140,9 @@ ulong get_tbclk(void) void reset_cpu(ulong ignored) { /* this is the way Linux does it */ - AT91C_BASE_RSTC->RSTC_RCR = (0xA5 << 24) | - AT91C_RSTC_PROCRST | - AT91C_RSTC_PERRST; + at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | + AT91_RSTC_PROCRST | + AT91_RSTC_PERRST); while (1); /* Never reached */ |