[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/bsp/lk/platform/omap3/timer.c b/src/bsp/lk/platform/omap3/timer.c
new file mode 100644
index 0000000..37cac3a
--- /dev/null
+++ b/src/bsp/lk/platform/omap3/timer.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2008 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <sys/types.h>
+#include <err.h>
+#include <reg.h>
+#include <debug.h>
+#include <kernel/thread.h>
+#include <platform.h>
+#include <platform/interrupts.h>
+#include <platform/timer.h>
+#include <platform/omap3.h>
+#include "platform_p.h"
+
+static lk_time_t tick_interval;
+static platform_timer_callback t_callback;
+static void *callback_arg;
+
+/* timer 2 */
+static const ulong timer_base = OMAP34XX_GPT2;
+
+#define TIMER_TICK_RATE 32768
+
+#define TIMER_REG(reg) *REG32(timer_base + (reg))
+
+status_t platform_set_periodic_timer(platform_timer_callback callback, void *arg, lk_time_t interval)
+{
+ spin_lock_saved_state_t statep;
+ arch_interrupt_save(&statep, SPIN_LOCK_FLAG_IRQ);
+
+ t_callback = callback;
+ callback_arg = arg;
+ tick_interval = interval;
+ uint32_t ticks_per_interval = (uint64_t)interval * TIMER_TICK_RATE / 1000; // interval is in ms
+
+ TIMER_REG(TCLR) = 0; // stop the timer
+ TIMER_REG(TLDR) = -ticks_per_interval;
+ TIMER_REG(TTGR) = 1;
+ TIMER_REG(TIER) = 0x2;
+ TIMER_REG(TCLR) = 0x3; // autoreload, start
+
+ unmask_interrupt(GPT2_IRQ);
+
+ arch_interrupt_restore(statep, SPIN_LOCK_FLAG_IRQ);
+
+ return NO_ERROR;
+}
+
+lk_time_t current_time(void)
+{
+ uint32_t delta_ticks;
+ uint32_t delta_ticks2;
+
+retry:
+ delta_ticks = *REG32(TIMER32K_CR);
+ delta_ticks2 = *REG32(TIMER32K_CR);
+ if (delta_ticks2 != delta_ticks)
+ goto retry;
+
+ uint64_t longtime = delta_ticks * 1000ULL / 32768ULL;
+
+ return (lk_time_t)longtime;
+}
+
+lk_bigtime_t current_time_hires(void)
+{
+ uint32_t delta_ticks;
+ uint32_t delta_ticks2;
+
+retry:
+ delta_ticks = *REG32(TIMER32K_CR);
+ delta_ticks2 = *REG32(TIMER32K_CR);
+ if (delta_ticks2 != delta_ticks)
+ goto retry;
+
+ uint64_t longtime = delta_ticks * 1000000ULL / 32768ULL;
+
+ return (lk_bigtime_t)longtime;
+}
+static enum handler_return os_timer_tick(void *arg)
+{
+ TIMER_REG(TISR) = TIMER_REG(TISR);
+
+ return t_callback(callback_arg, current_time());
+}
+
+void platform_init_timer(void)
+{
+ /* GPT2 */
+ RMWREG32(CM_CLKSEL_PER, 0, 1, 1);
+ RMWREG32(CM_ICLKEN_PER, 3, 1, 1);
+ RMWREG32(CM_FCLKEN_PER, 3, 1, 1);
+
+ // reset the GP timer
+ TIMER_REG(TIOCP_CFG) = 0x2;
+ while ((TIMER_REG(TISTAT) & 1) == 0)
+ ;
+
+ // set GPT2-9 clock inputs over to 32k
+ *REG32(CM_CLKSEL_PER) = 0;
+
+ // disable ints
+ TIMER_REG(TIER) = 0;
+ TIMER_REG(TISR) = 0x7; // clear any pending bits
+
+ // XXX make sure 32K timer is running
+
+ register_int_handler(GPT2_IRQ, &os_timer_tick, NULL);
+}
+
+void platform_halt_timers(void)
+{
+ TIMER_REG(TCLR) = 0;
+}
+