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-rw-r--r--arch/arm/cpu/arm926ejs/pantheon/timer.c201
1 files changed, 0 insertions, 201 deletions
diff --git a/arch/arm/cpu/arm926ejs/pantheon/timer.c b/arch/arm/cpu/arm926ejs/pantheon/timer.c
deleted file mode 100644
index 6382d3b..0000000
--- a/arch/arm/cpu/arm926ejs/pantheon/timer.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- * (C) Copyright 2011
- * Marvell Semiconductor <www.marvell.com>
- * Written-by: Lei Wen <leiwen@marvell.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/arch/cpu.h>
-#include <asm/arch/pantheon.h>
-
-/*
- * Timer registers
- * Refer 6.2.9 in Datasheet
- */
-struct panthtmr_registers {
- u32 clk_ctrl; /* Timer clk control reg */
- u32 match[9]; /* Timer match registers */
- u32 count[3]; /* Timer count registers */
- u32 status[3];
- u32 ie[3];
- u32 preload[3]; /* Timer preload value */
- u32 preload_ctrl[3];
- u32 wdt_match_en;
- u32 wdt_match_r;
- u32 wdt_val;
- u32 wdt_sts;
- u32 icr[3];
- u32 wdt_icr;
- u32 cer; /* Timer count enable reg */
- u32 cmr;
- u32 ilr[3];
- u32 wcr;
- u32 wfar;
- u32 wsar;
- u32 cvwr[3];
-};
-
-#define TIMER 0 /* Use TIMER 0 */
-/* Each timer has 3 match registers */
-#define MATCH_CMP(x) ((3 * TIMER) + x)
-#define TIMER_LOAD_VAL 0xffffffff
-#define COUNT_RD_REQ 0x1
-
-DECLARE_GLOBAL_DATA_PTR;
-/* Using gd->arch.tbu from timestamp and gd->arch.tbl for lastdec */
-
-/*
- * For preventing risk of instability in reading counter value,
- * first set read request to register cvwr and then read same
- * register after it captures counter value.
- */
-ulong read_timer(void)
-{
- struct panthtmr_registers *panthtimers =
- (struct panthtmr_registers *) PANTHEON_TIMER_BASE;
- volatile int loop=100;
- ulong val;
-
- writel(COUNT_RD_REQ, &panthtimers->cvwr);
- while (loop--)
- val = readl(&panthtimers->cvwr);
-
- /*
- * This stop gcc complain and prevent loop mistake init to 0
- */
- val = readl(&panthtimers->cvwr);
-
- return val;
-}
-
-ulong get_timer_masked(void)
-{
- ulong now = read_timer();
-
- if (now >= gd->arch.tbl) {
- /* normal mode */
- gd->arch.tbu += now - gd->arch.tbl;
- } else {
- /* we have an overflow ... */
- gd->arch.tbu += now + TIMER_LOAD_VAL - gd->arch.tbl;
- }
- gd->arch.tbl = now;
-
- return gd->arch.tbu;
-}
-
-ulong get_timer(ulong base)
-{
- return ((get_timer_masked() / (CONFIG_SYS_HZ_CLOCK / 1000)) -
- base);
-}
-
-void __udelay(unsigned long usec)
-{
- ulong delayticks;
- ulong endtime;
-
- delayticks = (usec * (CONFIG_SYS_HZ_CLOCK / 1000000));
- endtime = get_timer_masked() + delayticks;
-
- while (get_timer_masked() < endtime)
- ;
-}
-
-/*
- * init the Timer
- */
-int timer_init(void)
-{
- struct panthapb_registers *apb1clkres =
- (struct panthapb_registers *) PANTHEON_APBC_BASE;
- struct panthtmr_registers *panthtimers =
- (struct panthtmr_registers *) PANTHEON_TIMER_BASE;
-
- /* Enable Timer clock at 3.25 MHZ */
- writel(APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3), &apb1clkres->timers);
-
- /* load value into timer */
- writel(0x0, &panthtimers->clk_ctrl);
- /* Use Timer 0 Match Resiger 0 */
- writel(TIMER_LOAD_VAL, &panthtimers->match[MATCH_CMP(0)]);
- /* Preload value is 0 */
- writel(0x0, &panthtimers->preload[TIMER]);
- /* Enable match comparator 0 for Timer 0 */
- writel(0x1, &panthtimers->preload_ctrl[TIMER]);
-
- /* Enable timer 0 */
- writel(0x1, &panthtimers->cer);
- /* init the gd->arch.tbu and gd->arch.tbl value */
- gd->arch.tbl = read_timer();
- gd->arch.tbu = 0;
-
- return 0;
-}
-
-#define MPMU_APRR_WDTR (1<<4)
-#define TMR_WFAR 0xbaba /* WDT Register First key */
-#define TMP_WSAR 0xeb10 /* WDT Register Second key */
-
-/*
- * This function uses internal Watchdog Timer
- * based reset mechanism.
- * Steps to write watchdog registers (protected access)
- * 1. Write key value to TMR_WFAR reg.
- * 2. Write key value to TMP_WSAR reg.
- * 3. Perform write operation.
- */
-void reset_cpu (unsigned long ignored)
-{
- struct panthmpmu_registers *mpmu =
- (struct panthmpmu_registers *) PANTHEON_MPMU_BASE;
- struct panthtmr_registers *panthtimers =
- (struct panthtmr_registers *) PANTHEON_WD_TIMER_BASE;
- u32 val;
-
- /* negate hardware reset to the WDT after system reset */
- val = readl(&mpmu->aprr);
- val = val | MPMU_APRR_WDTR;
- writel(val, &mpmu->aprr);
-
- /* reset/enable WDT clock */
- writel(APBC_APBCLK, &mpmu->wdtpcr);
-
- /* clear previous WDT status */
- writel(TMR_WFAR, &panthtimers->wfar);
- writel(TMP_WSAR, &panthtimers->wsar);
- writel(0, &panthtimers->wdt_sts);
-
- /* set match counter */
- writel(TMR_WFAR, &panthtimers->wfar);
- writel(TMP_WSAR, &panthtimers->wsar);
- writel(0xf, &panthtimers->wdt_match_r);
-
- /* enable WDT reset */
- writel(TMR_WFAR, &panthtimers->wfar);
- writel(TMP_WSAR, &panthtimers->wsar);
- writel(0x3, &panthtimers->wdt_match_en);
-
- /*enable functional WDT clock */
- writel(APBC_APBCLK | APBC_FNCLK, &mpmu->wdtpcr);
-}
-
-/*
- * This function is derived from PowerPC code (read timebase as long long).
- * On ARM it just returns the timer value.
- */
-unsigned long long get_ticks(void)
-{
- return get_timer(0);
-}
-
-/*
- * This function is derived from PowerPC code (timebase clock frequency).
- * On ARM it returns the number of timer ticks per second.
- */
-ulong get_tbclk (void)
-{
- return (ulong)CONFIG_SYS_HZ;
-}