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Diffstat (limited to 'arch/arm/mvebu-common/timer.c')
-rw-r--r--arch/arm/mvebu-common/timer.c90
1 files changed, 40 insertions, 50 deletions
diff --git a/arch/arm/mvebu-common/timer.c b/arch/arm/mvebu-common/timer.c
index b7aa645..40c4bc2 100644
--- a/arch/arm/mvebu-common/timer.c
+++ b/arch/arm/mvebu-common/timer.c
@@ -9,73 +9,66 @@
#include <asm/io.h>
#include <asm/arch/soc.h>
-#define UBOOT_CNTR 0 /* counter to use for uboot timer */
-
-/* Timer reload and current value registers */
-struct kwtmr_val {
- u32 reload; /* Timer reload reg */
- u32 val; /* Timer value reg */
-};
-
-/* Timer registers */
-struct kwtmr_registers {
- u32 ctrl; /* Timer control reg */
- u32 pad[3];
- struct kwtmr_val tmr[2];
- u32 wdt_reload;
- u32 wdt_val;
-};
-
-struct kwtmr_registers *kwtmr_regs = (struct kwtmr_registers *)KW_TIMER_BASE;
+#define UBOOT_CNTR 0 /* counter to use for U-Boot timer */
/*
* ARM Timers Registers Map
*/
-#define CNTMR_CTRL_REG &kwtmr_regs->ctrl
-#define CNTMR_RELOAD_REG(tmrnum) &kwtmr_regs->tmr[tmrnum].reload
-#define CNTMR_VAL_REG(tmrnum) &kwtmr_regs->tmr[tmrnum].val
+#define CNTMR_CTRL_REG &tmr_regs->ctrl
+#define CNTMR_RELOAD_REG(tmrnum) &tmr_regs->tmr[tmrnum].reload
+#define CNTMR_VAL_REG(tmrnum) &tmr_regs->tmr[tmrnum].val
/*
* ARM Timers Control Register
* CPU_TIMERS_CTRL_REG (CTCR)
*/
#define CTCR_ARM_TIMER_EN_OFFS(cntr) (cntr * 2)
-#define CTCR_ARM_TIMER_EN_MASK(cntr) (1 << CTCR_ARM_TIMER_EN_OFFS)
#define CTCR_ARM_TIMER_EN(cntr) (1 << CTCR_ARM_TIMER_EN_OFFS(cntr))
-#define CTCR_ARM_TIMER_DIS(cntr) (0 << CTCR_ARM_TIMER_EN_OFFS(cntr))
#define CTCR_ARM_TIMER_AUTO_OFFS(cntr) ((cntr * 2) + 1)
-#define CTCR_ARM_TIMER_AUTO_MASK(cntr) (1 << 1)
#define CTCR_ARM_TIMER_AUTO_EN(cntr) (1 << CTCR_ARM_TIMER_AUTO_OFFS(cntr))
-#define CTCR_ARM_TIMER_AUTO_DIS(cntr) (0 << CTCR_ARM_TIMER_AUTO_OFFS(cntr))
-/*
- * ARM Timer\Watchdog Reload Register
- * CNTMR_RELOAD_REG (TRR)
- */
-#define TRG_ARM_TIMER_REL_OFFS 0
-#define TRG_ARM_TIMER_REL_MASK 0xffffffff
+/* Only Armada XP have the 25MHz enable bit (Kirkwood doesn't) */
+#if defined(CONFIG_ARMADA_XP)
+#define CTCR_ARM_TIMER_25MHZ_OFFS(cntr) (cntr + 11)
+#define CTCR_ARM_TIMER_25MHZ(cntr) (1 << CTCR_ARM_TIMER_25MHZ_OFFS(cntr))
+#else
+#define CTCR_ARM_TIMER_25MHZ(cntr) 0
+#endif
-/*
- * ARM Timer\Watchdog Register
- * CNTMR_VAL_REG (TVRG)
- */
-#define TVR_ARM_TIMER_OFFS 0
-#define TVR_ARM_TIMER_MASK 0xffffffff
-#define TVR_ARM_TIMER_MAX 0xffffffff
#define TIMER_LOAD_VAL 0xffffffff
-#define READ_TIMER (readl(CNTMR_VAL_REG(UBOOT_CNTR)) / \
- (CONFIG_SYS_TCLK / 1000))
+#define timestamp gd->arch.tbl
+#define lastdec gd->arch.lastinc
+
+/* Timer reload and current value registers */
+struct kwtmr_val {
+ u32 reload; /* Timer reload reg */
+ u32 val; /* Timer value reg */
+};
+
+/* Timer registers */
+struct kwtmr_registers {
+ u32 ctrl; /* Timer control reg */
+ u32 pad[3];
+ struct kwtmr_val tmr[4];
+ u32 wdt_reload;
+ u32 wdt_val;
+};
DECLARE_GLOBAL_DATA_PTR;
-#define timestamp gd->arch.tbl
-#define lastdec gd->arch.lastinc
+static struct kwtmr_registers *tmr_regs =
+ (struct kwtmr_registers *)MVEBU_TIMER_BASE;
+
+static inline ulong read_timer(void)
+{
+ return readl(CNTMR_VAL_REG(UBOOT_CNTR)) / (CONFIG_SYS_TCLK / 1000);
+}
ulong get_timer_masked(void)
{
- ulong now = READ_TIMER;
+ ulong now = read_timer();
if (lastdec >= now) {
/* normal mode */
@@ -119,20 +112,17 @@ void __udelay(unsigned long usec)
*/
int timer_init(void)
{
- unsigned int cntmrctrl;
-
/* load value into timer */
writel(TIMER_LOAD_VAL, CNTMR_RELOAD_REG(UBOOT_CNTR));
writel(TIMER_LOAD_VAL, CNTMR_VAL_REG(UBOOT_CNTR));
/* enable timer in auto reload mode */
- cntmrctrl = readl(CNTMR_CTRL_REG);
- cntmrctrl |= CTCR_ARM_TIMER_EN(UBOOT_CNTR);
- cntmrctrl |= CTCR_ARM_TIMER_AUTO_EN(UBOOT_CNTR);
- writel(cntmrctrl, CNTMR_CTRL_REG);
+ clrsetbits_le32(CNTMR_CTRL_REG, CTCR_ARM_TIMER_25MHZ(UBOOT_CNTR),
+ CTCR_ARM_TIMER_EN(UBOOT_CNTR) |
+ CTCR_ARM_TIMER_AUTO_EN(UBOOT_CNTR));
/* init the timestamp and lastdec value */
- lastdec = READ_TIMER;
+ lastdec = read_timer();
timestamp = 0;
return 0;