bsps: Move clock drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

1 files changed, 55 insertions, 0 deletions

diff --git a/bsps/nios2/nios2_iss/clock/clock.c b/bsps/nios2/nios2_iss/clock/clock.c
new file mode 100644
index 0000000000..0ec0a71c71
--- /dev/null
+++ b/bsps/nios2/nios2_iss/clock/clock.c
@@ -0,0 +1,55 @@
+/*
+ * Use SYS_CLK as system clock
+ *
+ * Copyright (c) 2005-2006 Kolja Waschk, rtemsdev/ixo.de
+ */
+
+#include <rtems.h>
+#include <bsp.h>
+
+#define CLOCK_REGS ((altera_avalon_timer_regs*)NIOS2_IO_BASE(CLOCK_BASE))
+
+/*
+ * Periodic interval timer interrupt handler
+ */
+#define Clock_driver_support_at_tick() \
+  do { CLOCK_REGS->status = 0; } while(0)
+
+/*
+ * Attach clock interrupt handler
+ */
+#define Clock_driver_support_install_isr(_new) \
+  set_vector(_new, CLOCK_VECTOR, 1)
+
+/*
+ * Turn off the clock
+ */
+#define Clock_driver_support_shutdown_hardware() \
+  do { \
+    CLOCK_REGS->control = ALTERA_AVALON_TIMER_CONTROL_STOP_MSK; \
+  } while (0)
+
+/*
+ * Set up the clock hardware
+ */
+static void Clock_driver_support_initialize_hardware(void)
+{
+  uint32_t period;
+
+  CLOCK_REGS->control = ALTERA_AVALON_TIMER_CONTROL_STOP_MSK;
+
+  period = (CLOCK_FREQ/1000000L)*rtems_configuration_get_microseconds_per_tick() - 1;
+  CLOCK_REGS->period_hi = period >> 16;
+  CLOCK_REGS->period_lo = period & 0xFFFF;
+
+  CLOCK_REGS->control = ALTERA_AVALON_TIMER_CONTROL_ITO_MSK  |
+                        ALTERA_AVALON_TIMER_CONTROL_CONT_MSK |
+                        ALTERA_AVALON_TIMER_CONTROL_START_MSK;
+
+  NIOS2_IENABLE(1 << CLOCK_VECTOR);
+}
+
+#define CLOCK_DRIVER_USE_DUMMY_TIMECOUNTER
+
+#include "../../../shared/dev/clock/clockimpl.h"
+