1 files changed, 85 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/arm/cpu/pxa/timer.c b/qemu/roms/u-boot/arch/arm/cpu/pxa/timer.c
new file mode 100644
index 000000000..c4717de6a
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/pxa/timer.c
@@ -0,0 +1,85 @@
+/*
+ * Marvell PXA2xx/3xx timer driver
+ *
+ * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/io.h>
+#include <common.h>
+#include <div64.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define	TIMER_LOAD_VAL	0xffffffff
+
+#define	timestamp	(gd->arch.tbl)
+#define	lastinc		(gd->arch.lastinc)
+
+#if defined(CONFIG_CPU_PXA27X) || defined(CONFIG_CPU_MONAHANS)
+#define	TIMER_FREQ_HZ	3250000
+#elif defined(CONFIG_CPU_PXA25X)
+#define	TIMER_FREQ_HZ	3686400
+#else
+#error "Timer frequency unknown - please config PXA CPU type"
+#endif
+
+static unsigned long long tick_to_time(unsigned long long tick)
+{
+	return lldiv(tick * CONFIG_SYS_HZ, TIMER_FREQ_HZ);
+}
+
+static unsigned long long us_to_tick(unsigned long long us)
+{
+	return lldiv(us * TIMER_FREQ_HZ, 1000000);
+}
+
+int timer_init(void)
+{
+	writel(0, OSCR);
+	return 0;
+}
+
+unsigned long long get_ticks(void)
+{
+	/* Current tick value */
+	uint32_t now = readl(OSCR);
+
+	if (now >= lastinc) {
+		/*
+		 * Normal mode (non roll)
+		 * Move stamp forward with absolute diff ticks
+		 */
+		timestamp += (now - lastinc);
+	} else {
+		/* We have rollover of incrementer */
+		timestamp += (TIMER_LOAD_VAL - lastinc) + now;
+	}
+
+	lastinc = now;
+	return timestamp;
+}
+
+ulong get_timer(ulong base)
+{
+	return tick_to_time(get_ticks()) - base;
+}
+
+void __udelay(unsigned long usec)
+{
+	unsigned long long tmp;
+	ulong tmo;
+
+	tmo = us_to_tick(usec);
+	tmp = get_ticks() + tmo;	/* get current timestamp */
+
+	while (get_ticks() < tmp)	/* loop till event */
+		 /*NOP*/;
+}
+
+ulong get_tbclk(void)
+{
+	return TIMER_FREQ_HZ;
+}