summaryrefslogtreecommitdiffstats
path: root/c/src/lib/libbsp/powerpc/mpc55xxevb/clock/clock-config.c
diff options
context:
space:
mode:
Diffstat (limited to 'c/src/lib/libbsp/powerpc/mpc55xxevb/clock/clock-config.c')
-rw-r--r--c/src/lib/libbsp/powerpc/mpc55xxevb/clock/clock-config.c257
1 files changed, 0 insertions, 257 deletions
diff --git a/c/src/lib/libbsp/powerpc/mpc55xxevb/clock/clock-config.c b/c/src/lib/libbsp/powerpc/mpc55xxevb/clock/clock-config.c
deleted file mode 100644
index c712d80745..0000000000
--- a/c/src/lib/libbsp/powerpc/mpc55xxevb/clock/clock-config.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/**
- * @file
- *
- * @ingroup mpc55xx
- *
- * @brief Clock driver configuration.
- */
-
-/*
- * Copyright (c) 2009-2013 embedded brains GmbH. All rights reserved.
- *
- * embedded brains GmbH
- * Dornierstr. 4
- * 82178 Puchheim
- * Germany
- * <rtems@embedded-brains.de>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#include <bsp.h>
-#include <bsp/fatal.h>
-#include <bsp/irq.h>
-
-#include <mpc55xx/regs.h>
-
-#include <rtems/timecounter.h>
-
-void Clock_isr(void *arg);
-
-static rtems_timecounter_simple mpc55xx_tc;
-
-#if defined(MPC55XX_CLOCK_EMIOS_CHANNEL)
-
-#include <mpc55xx/emios.h>
-
-static uint32_t mpc55xx_tc_get(rtems_timecounter_simple *tc)
-{
- return EMIOS.CH [MPC55XX_CLOCK_EMIOS_CHANNEL].CCNTR.R;
-}
-
-static bool mpc55xx_tc_is_pending(rtems_timecounter_simple *tc)
-{
- return EMIOS.CH [MPC55XX_CLOCK_EMIOS_CHANNEL].CSR.B.FLAG != 0;
-}
-
-static uint32_t mpc55xx_tc_get_timecount(struct timecounter *tc)
-{
- return rtems_timecounter_simple_upcounter_get(
- tc,
- mpc55xx_tc_get,
- mpc55xx_tc_is_pending
- );
-}
-
-static void mpc55xx_tc_at_tick(rtems_timecounter_simple *tc)
-{
- union EMIOS_CSR_tag csr = MPC55XX_ZERO_FLAGS;
- csr.B.FLAG = 1;
- EMIOS.CH [MPC55XX_CLOCK_EMIOS_CHANNEL].CSR.R = csr.R;
-}
-
-static void mpc55xx_tc_tick(void)
-{
- rtems_timecounter_simple_upcounter_tick(
- &mpc55xx_tc,
- mpc55xx_tc_get,
- mpc55xx_tc_at_tick
- );
-}
-
-static void mpc55xx_clock_handler_install(rtems_isr_entry isr)
-{
- rtems_status_code sc = RTEMS_SUCCESSFUL;
-
- sc = mpc55xx_interrupt_handler_install(
- MPC55XX_IRQ_EMIOS(MPC55XX_CLOCK_EMIOS_CHANNEL),
- "clock",
- RTEMS_INTERRUPT_UNIQUE,
- MPC55XX_INTC_MIN_PRIORITY,
- (rtems_interrupt_handler) isr,
- NULL
- );
- if (sc != RTEMS_SUCCESSFUL) {
- bsp_fatal(MPC55XX_FATAL_CLOCK_EMIOS_IRQ_INSTALL);
- }
-}
-
-static void mpc55xx_clock_initialize(void)
-{
- volatile struct EMIOS_CH_tag *regs = &EMIOS.CH [MPC55XX_CLOCK_EMIOS_CHANNEL];
- union EMIOS_CCR_tag ccr = MPC55XX_ZERO_FLAGS;
- union EMIOS_CSR_tag csr = MPC55XX_ZERO_FLAGS;
- unsigned prescaler = mpc55xx_emios_global_prescaler();
- uint64_t reference_clock = bsp_clock_speed;
- uint64_t us_per_tick = rtems_configuration_get_microseconds_per_tick();
- uint64_t interval = (reference_clock * us_per_tick) / 1000000;
-
- /* Apply prescaler */
- if (prescaler > 0) {
- interval /= (uint64_t) prescaler;
- } else {
- bsp_fatal(MPC55XX_FATAL_CLOCK_EMIOS_PRESCALER);
- }
-
- /* Check interval */
- if (interval == 0 || interval > MPC55XX_EMIOS_VALUE_MAX) {
- bsp_fatal(MPC55XX_FATAL_CLOCK_EMIOS_INTERVAL);
- }
-
- /* Configure eMIOS channel */
-
- /* Set channel in GPIO mode */
- ccr.B.MODE = MPC55XX_EMIOS_MODE_GPIO_INPUT;
- regs->CCR.R = ccr.R;
-
- /* Clear status flags */
- csr.B.OVR = 1;
- csr.B.OVFL = 1;
- csr.B.FLAG = 1;
- regs->CSR.R = csr.R;
-
- /* Set internal counter start value */
- regs->CCNTR.R = 1;
-
- /* Set timer period */
- regs->CADR.R = (uint32_t) interval - 1;
-
- /* Set control register */
- #if MPC55XX_CHIP_FAMILY == 551
- ccr.B.MODE = MPC55XX_EMIOS_MODE_MCB_UP_INT_CLK;
- #else
- ccr.B.MODE = MPC55XX_EMIOS_MODE_MC_UP_INT_CLK;
- #endif
- ccr.B.UCPREN = 1;
- ccr.B.FEN = 1;
- ccr.B.FREN = 1;
- regs->CCR.R = ccr.R;
-
- rtems_timecounter_simple_install(
- &mpc55xx_tc,
- reference_clock,
- interval,
- mpc55xx_tc_get_timecount
- );
-}
-
-static void mpc55xx_clock_cleanup(void)
-{
- volatile struct EMIOS_CH_tag *regs = &EMIOS.CH [MPC55XX_CLOCK_EMIOS_CHANNEL];
- union EMIOS_CCR_tag ccr = MPC55XX_ZERO_FLAGS;
-
- /* Set channel in GPIO mode */
- ccr.B.MODE = MPC55XX_EMIOS_MODE_GPIO_INPUT;
- regs->CCR.R = ccr.R;
-}
-
-#elif defined(MPC55XX_CLOCK_PIT_CHANNEL)
-
-static uint32_t mpc55xx_tc_get(rtems_timecounter_simple *tc)
-{
- return PIT_RTI.CHANNEL [MPC55XX_CLOCK_PIT_CHANNEL].CVAL.R;
-}
-
-static bool mpc55xx_tc_is_pending(rtems_timecounter_simple *tc)
-{
- return PIT_RTI.CHANNEL [MPC55XX_CLOCK_PIT_CHANNEL].TFLG.B.TIF != 0;
-}
-
-static uint32_t mpc55xx_tc_get_timecount(struct timecounter *tc)
-{
- return rtems_timecounter_simple_downcounter_get(
- tc,
- mpc55xx_tc_get,
- mpc55xx_tc_is_pending
- );
-}
-
-static void mpc55xx_tc_at_tick(rtems_timecounter_simple *tc)
-{
- volatile PIT_RTI_CHANNEL_tag *channel =
- &PIT_RTI.CHANNEL [MPC55XX_CLOCK_PIT_CHANNEL];
- PIT_RTI_TFLG_32B_tag tflg = { .B = { .TIF = 1 } };
-
- channel->TFLG.R = tflg.R;
-}
-
-static void mpc55xx_tc_tick(void)
-{
- rtems_timecounter_simple_downcounter_tick(
- &mpc55xx_tc,
- mpc55xx_tc_get,
- mpc55xx_tc_at_tick
- );
-}
-
-static void mpc55xx_clock_handler_install(rtems_isr_entry isr)
-{
- rtems_status_code sc = RTEMS_SUCCESSFUL;
-
- sc = mpc55xx_interrupt_handler_install(
- MPC55XX_IRQ_PIT_CHANNEL(MPC55XX_CLOCK_PIT_CHANNEL),
- "clock",
- RTEMS_INTERRUPT_UNIQUE,
- MPC55XX_INTC_MIN_PRIORITY,
- (rtems_interrupt_handler) isr,
- NULL
- );
- if (sc != RTEMS_SUCCESSFUL) {
- bsp_fatal(MPC55XX_FATAL_CLOCK_PIT_IRQ_INSTALL);
- }
-}
-
-static void mpc55xx_clock_initialize(void)
-{
- volatile PIT_RTI_CHANNEL_tag *channel =
- &PIT_RTI.CHANNEL [MPC55XX_CLOCK_PIT_CHANNEL];
- uint64_t reference_clock = bsp_clock_speed;
- uint64_t us_per_tick = rtems_configuration_get_microseconds_per_tick();
- uint64_t interval = (reference_clock * us_per_tick) / 1000000;
- PIT_RTI_PITMCR_32B_tag pitmcr = { .B = { .FRZ = 1 } };
- PIT_RTI_TCTRL_32B_tag tctrl = { .B = { .TIE = 1, .TEN = 1 } };
-
- PIT_RTI.PITMCR.R = pitmcr.R;
- channel->LDVAL.R = interval;
- channel->TCTRL.R = tctrl.R;
-
- rtems_timecounter_simple_install(
- &mpc55xx_tc,
- reference_clock,
- interval,
- mpc55xx_tc_get_timecount
- );
-}
-
-static void mpc55xx_clock_cleanup(void)
-{
- volatile PIT_RTI_CHANNEL_tag *channel =
- &PIT_RTI.CHANNEL [MPC55XX_CLOCK_PIT_CHANNEL];
-
- channel->TCTRL.R = 0;
-}
-
-#endif
-
-#define Clock_driver_timecounter_tick() mpc55xx_tc_tick()
-#define Clock_driver_support_initialize_hardware() \
- mpc55xx_clock_initialize()
-#define Clock_driver_support_install_isr(isr) \
- mpc55xx_clock_handler_install(isr)
-#define Clock_driver_support_shutdown_hardware() \
- mpc55xx_clock_cleanup()
-
-/* Include shared source clock driver code */
-#include "../../../../libbsp/shared/clockdrv_shell.h"
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-28 16:58:52 +0000