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-rw-r--r--examples/standalone/timer.c333
1 files changed, 0 insertions, 333 deletions
diff --git a/examples/standalone/timer.c b/examples/standalone/timer.c
deleted file mode 100644
index dbd5c16f97..0000000000
--- a/examples/standalone/timer.c
+++ /dev/null
@@ -1,333 +0,0 @@
-/*
- * (C) Copyright 2000
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <commproc.h>
-#include <mpc8xx_irq.h>
-#include <exports.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#undef DEBUG
-
-#define TIMER_PERIOD 1000000 /* 1 second clock */
-
-static void timer_handler (void *arg);
-
-
-/* Access functions for the Machine State Register */
-static __inline__ unsigned long get_msr(void)
-{
- unsigned long msr;
-
- asm volatile("mfmsr %0" : "=r" (msr) :);
- return msr;
-}
-
-static __inline__ void set_msr(unsigned long msr)
-{
- asm volatile("mtmsr %0" : : "r" (msr));
-}
-
-/*
- * Definitions to access the CPM Timer registers
- * See 8xx_immap.h for Internal Memory Map layout,
- * and commproc.h for CPM Interrupt vectors (aka "IRQ"s)
- */
-
-typedef struct tid_8xx_cpmtimer_s {
- int cpm_vec; /* CPM Interrupt Vector for this timer */
- ushort *tgcrp; /* Pointer to Timer Global Config Reg. */
- ushort *tmrp; /* Pointer to Timer Mode Register */
- ushort *trrp; /* Pointer to Timer Reference Register */
- ushort *tcrp; /* Pointer to Timer Capture Register */
- ushort *tcnp; /* Pointer to Timer Counter Register */
- ushort *terp; /* Pointer to Timer Event Register */
-} tid_8xx_cpmtimer_t;
-
-#ifndef CLOCKRATE
-# define CLOCKRATE 64
-#endif
-
-#define CPMT_CLOCK_DIV 16
-#define CPMT_MAX_PRESCALER 256
-#define CPMT_MAX_REFERENCE 65535 /* max. unsigned short */
-
-#define CPMT_MAX_TICKS (CPMT_MAX_REFERENCE * CPMT_MAX_PRESCALER)
-#define CPMT_MAX_TICKS_WITH_DIV (CPMT_MAX_REFERENCE * CPMT_MAX_PRESCALER * CPMT_CLOCK_DIV)
-#define CPMT_MAX_INTERVAL (CPMT_MAX_TICKS_WITH_DIV / CLOCKRATE)
-
-/* For now: always use max. prescaler value */
-#define CPMT_PRESCALER (CPMT_MAX_PRESCALER)
-
-/* CPM Timer Event Register Bits */
-#define CPMT_EVENT_CAP 0x0001 /* Capture Event */
-#define CPMT_EVENT_REF 0x0002 /* Reference Counter Event */
-
-/* CPM Timer Global Config Register */
-#define CPMT_GCR_RST 0x0001 /* Reset Timer */
-#define CPMT_GCR_STP 0x0002 /* Stop Timer */
-#define CPMT_GCR_FRZ 0x0004 /* Freeze Timer */
-#define CPMT_GCR_GM_CAS 0x0008 /* Gate Mode / Cascade Timers */
-#define CPMT_GCR_MASK (CPMT_GCR_RST|CPMT_GCR_STP|CPMT_GCR_FRZ|CPMT_GCR_GM_CAS)
-
-/* CPM Timer Mode register */
-#define CPMT_MR_GE 0x0001 /* Gate Enable */
-#define CPMT_MR_ICLK_CASC 0x0000 /* Clock internally cascaded */
-#define CPMT_MR_ICLK_CLK 0x0002 /* Clock = system clock */
-#define CPMT_MR_ICLK_CLKDIV 0x0004 /* Clock = system clock / 16 */
-#define CPMT_MR_ICLK_TIN 0x0006 /* Clock = TINx signal */
-#define CPMT_MR_FRR 0x0008 /* Free Run / Restart */
-#define CPMT_MR_ORI 0x0010 /* Out. Reference Interrupt En. */
-#define CPMT_MR_OM 0x0020 /* Output Mode */
-#define CPMT_MR_CE_DIS 0x0000 /* Capture/Interrupt disabled */
-#define CPMT_MR_CE_RISE 0x0040 /* Capt./Interr. on rising TIN */
-#define CPMT_MR_CE_FALL 0x0080 /* Capt./Interr. on falling TIN */
-#define CPMT_MR_CE_ANY 0x00C0 /* Capt./Interr. on any TIN edge*/
-
-
-/*
- * which CPM timer to use - index starts at 0 (= timer 1)
- */
-#define TID_TIMER_ID 0 /* use CPM timer 1 */
-
-void setPeriod (tid_8xx_cpmtimer_t *hwp, ulong interval);
-
-static const char usage[] = "\n[q, b, e, ?] ";
-
-int timer (int argc, char * const argv[])
-{
- cpmtimer8xx_t *cpmtimerp; /* Pointer to the CPM Timer structure */
- tid_8xx_cpmtimer_t hw;
- tid_8xx_cpmtimer_t *hwp = &hw;
- int c;
- int running;
-
- app_startup(argv);
-
- /* Pointer to CPM Timer structure */
- cpmtimerp = &((immap_t *) gd->bd->bi_immr_base)->im_cpmtimer;
-
- printf ("TIMERS=0x%x\n", (unsigned) cpmtimerp);
-
- /* Initialize pointers depending on which timer we use */
- switch (TID_TIMER_ID) {
- case 0:
- hwp->tmrp = &(cpmtimerp->cpmt_tmr1);
- hwp->trrp = &(cpmtimerp->cpmt_trr1);
- hwp->tcrp = &(cpmtimerp->cpmt_tcr1);
- hwp->tcnp = &(cpmtimerp->cpmt_tcn1);
- hwp->terp = &(cpmtimerp->cpmt_ter1);
- hwp->cpm_vec = CPMVEC_TIMER1;
- break;
- case 1:
- hwp->tmrp = &(cpmtimerp->cpmt_tmr2);
- hwp->trrp = &(cpmtimerp->cpmt_trr2);
- hwp->tcrp = &(cpmtimerp->cpmt_tcr2);
- hwp->tcnp = &(cpmtimerp->cpmt_tcn2);
- hwp->terp = &(cpmtimerp->cpmt_ter2);
- hwp->cpm_vec = CPMVEC_TIMER2;
- break;
- case 2:
- hwp->tmrp = &(cpmtimerp->cpmt_tmr3);
- hwp->trrp = &(cpmtimerp->cpmt_trr3);
- hwp->tcrp = &(cpmtimerp->cpmt_tcr3);
- hwp->tcnp = &(cpmtimerp->cpmt_tcn3);
- hwp->terp = &(cpmtimerp->cpmt_ter3);
- hwp->cpm_vec = CPMVEC_TIMER3;
- break;
- case 3:
- hwp->tmrp = &(cpmtimerp->cpmt_tmr4);
- hwp->trrp = &(cpmtimerp->cpmt_trr4);
- hwp->tcrp = &(cpmtimerp->cpmt_tcr4);
- hwp->tcnp = &(cpmtimerp->cpmt_tcn4);
- hwp->terp = &(cpmtimerp->cpmt_ter4);
- hwp->cpm_vec = CPMVEC_TIMER4;
- break;
- }
-
- hwp->tgcrp = &cpmtimerp->cpmt_tgcr;
-
- printf ("Using timer %d\n"
- "tgcr @ 0x%x, tmr @ 0x%x, trr @ 0x%x,"
- " tcr @ 0x%x, tcn @ 0x%x, ter @ 0x%x\n",
- TID_TIMER_ID + 1,
- (unsigned) hwp->tgcrp,
- (unsigned) hwp->tmrp,
- (unsigned) hwp->trrp,
- (unsigned) hwp->tcrp,
- (unsigned) hwp->tcnp,
- (unsigned) hwp->terp
- );
-
- /* reset timer */
- *hwp->tgcrp &= ~(CPMT_GCR_MASK << TID_TIMER_ID);
-
- /* clear all events */
- *hwp->terp = (CPMT_EVENT_CAP | CPMT_EVENT_REF);
-
- puts(usage);
- running = 0;
- while ((c = getc()) != 'q') {
- if (c == 'b') {
-
- setPeriod (hwp, TIMER_PERIOD); /* Set period and start ticking */
-
- /* Install interrupt handler (enable timer in CIMR) */
- install_hdlr (hwp->cpm_vec, timer_handler, hwp);
-
- printf ("Enabling timer\n");
-
- /* enable timer */
- *hwp->tgcrp |= (CPMT_GCR_RST << TID_TIMER_ID);
- running = 1;
-
-#ifdef DEBUG
- printf ("tgcr=0x%x, tmr=0x%x, trr=0x%x,"
- " tcr=0x%x, tcn=0x%x, ter=0x%x\n",
- *hwp->tgcrp, *hwp->tmrp, *hwp->trrp,
- *hwp->tcrp, *hwp->tcnp, *hwp->terp
- );
-#endif
- } else if (c == 'e') {
-
- printf ("Stopping timer\n");
-
- *hwp->tgcrp &= ~(CPMT_GCR_MASK << TID_TIMER_ID);
- running = 0;
-
-#ifdef DEBUG
- printf ("tgcr=0x%x, tmr=0x%x, trr=0x%x,"
- " tcr=0x%x, tcn=0x%x, ter=0x%x\n",
- *hwp->tgcrp, *hwp->tmrp, *hwp->trrp,
- *hwp->tcrp, *hwp->tcnp, *hwp->terp
- );
-#endif
- /* Uninstall interrupt handler */
- free_hdlr (hwp->cpm_vec);
-
- } else if (c == '?') {
-#ifdef DEBUG
- cpic8xx_t *cpm_icp = &((immap_t *) gd->bd->bi_immr_base)->im_cpic;
- sysconf8xx_t *siup = &((immap_t *) gd->bd->bi_immr_base)->im_siu_conf;
-#endif
-
- printf ("\ntgcr=0x%x, tmr=0x%x, trr=0x%x,"
- " tcr=0x%x, tcn=0x%x, ter=0x%x\n",
- *hwp->tgcrp, *hwp->tmrp, *hwp->trrp,
- *hwp->tcrp, *hwp->tcnp, *hwp->terp
- );
-#ifdef DEBUG
- printf ("SIUMCR=0x%08lx, SYPCR=0x%08lx,"
- " SIMASK=0x%08lx, SIPEND=0x%08lx\n",
- siup->sc_siumcr,
- siup->sc_sypcr,
- siup->sc_simask,
- siup->sc_sipend
- );
-
- printf ("CIMR=0x%08lx, CICR=0x%08lx, CIPR=0x%08lx\n",
- cpm_icp->cpic_cimr,
- cpm_icp->cpic_cicr,
- cpm_icp->cpic_cipr
- );
-#endif
- } else {
- printf ("\nEnter: q - quit, b - start timer, e - stop timer, ? - get status\n");
- }
- puts(usage);
- }
- if (running) {
- printf ("Stopping timer\n");
- *hwp->tgcrp &= ~(CPMT_GCR_MASK << TID_TIMER_ID);
- free_hdlr (hwp->cpm_vec);
- }
-
- return (0);
-}
-
-
-/* Set period in microseconds and start.
- * Truncate to maximum period if more than this is requested - but warn about it.
- */
-
-void setPeriod (tid_8xx_cpmtimer_t *hwp, ulong interval)
-{
- unsigned short prescaler;
- unsigned long ticks;
-
- printf ("Set interval %ld us\n", interval);
-
- /* Warn if requesting longer period than possible */
- if (interval > CPMT_MAX_INTERVAL) {
- printf ("Truncate interval %ld to maximum (%d)\n",
- interval, CPMT_MAX_INTERVAL);
- interval = CPMT_MAX_INTERVAL;
- }
- /*
- * Check if we want to use clock divider:
- * Since the reference counter can be incremented only in integer steps,
- * we try to keep it as big as possible to allow the resulting period to be
- * as precise as possible.
- */
- /* prescaler, enable interrupt, restart after ref count is reached */
- prescaler = (ushort) ((CPMT_PRESCALER - 1) << 8) |
- CPMT_MR_ORI |
- CPMT_MR_FRR;
-
- ticks = ((ulong) CLOCKRATE * interval);
-
- if (ticks > CPMT_MAX_TICKS) {
- ticks /= CPMT_CLOCK_DIV;
- prescaler |= CPMT_MR_ICLK_CLKDIV; /* use system clock divided by 16 */
- } else {
- prescaler |= CPMT_MR_ICLK_CLK; /* use system clock without divider */
- }
-
-#ifdef DEBUG
- printf ("clock/%d, prescale factor %d, reference %ld, ticks %ld\n",
- (ticks > CPMT_MAX_TICKS) ? CPMT_CLOCK_DIV : 1,
- CPMT_PRESCALER,
- (ticks / CPMT_PRESCALER),
- ticks
- );
-#endif
-
- /* set prescaler register */
- *hwp->tmrp = prescaler;
-
- /* clear timer counter */
- *hwp->tcnp = 0;
-
- /* set reference register */
- *hwp->trrp = (unsigned short) (ticks / CPMT_PRESCALER);
-
-#ifdef DEBUG
- printf ("tgcr=0x%x, tmr=0x%x, trr=0x%x,"
- " tcr=0x%x, tcn=0x%x, ter=0x%x\n",
- *hwp->tgcrp, *hwp->tmrp, *hwp->trrp,
- *hwp->tcrp, *hwp->tcnp, *hwp->terp
- );
-#endif
-}
-
-/*
- * Handler for CPMVEC_TIMER1 interrupt
- */
-static
-void timer_handler (void *arg)
-{
- tid_8xx_cpmtimer_t *hwp = (tid_8xx_cpmtimer_t *)arg;
-
- /* printf ("** TER1=%04x ** ", *hwp->terp); */
-
- /* just for demonstration */
- printf (".");
-
- /* clear all possible events: Ref. and Cap. */
- *hwp->terp = (CPMT_EVENT_CAP | CPMT_EVENT_REF);
-}
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