By using the common timer functions for mvebu/kirkwood we can get rid of quite a lot of code.
Signed-off-by: Stefan Roese sr@denx.de Cc: Luka Perkov luka.perkov@sartura.hr Cc: Simon Guinot simon.guinot@sequanux.org Cc: Valentin Longchamp valentin.longchamp@keymile.com --- arch/arm/mach-kirkwood/include/mach/config.h | 5 + arch/arm/mach-mvebu/include/mach/config.h | 5 + arch/arm/mach-mvebu/timer.c | 136 +++------------------------ 3 files changed, 22 insertions(+), 124 deletions(-)
diff --git a/arch/arm/mach-kirkwood/include/mach/config.h b/arch/arm/mach-kirkwood/include/mach/config.h index d049395..0c4309f 100644 --- a/arch/arm/mach-kirkwood/include/mach/config.h +++ b/arch/arm/mach-kirkwood/include/mach/config.h @@ -135,4 +135,9 @@ #define CONFIG_SYS_I2C_SPEED 100000 #endif
+/* Use common timer */ +#define CONFIG_SYS_TIMER_COUNTS_DOWN +#define CONFIG_SYS_TIMER_COUNTER (MVEBU_TIMER_BASE + 0x14) +#define CONFIG_SYS_TIMER_RATE CONFIG_SYS_TCLK + #endif /* _KW_CONFIG_H */ diff --git a/arch/arm/mach-mvebu/include/mach/config.h b/arch/arm/mach-mvebu/include/mach/config.h index 1d49cab..3281d90 100644 --- a/arch/arm/mach-mvebu/include/mach/config.h +++ b/arch/arm/mach-mvebu/include/mach/config.h @@ -85,6 +85,11 @@ #define CONFIG_SYS_I2C_SPEED 100000 #endif
+/* Use common timer */ +#define CONFIG_SYS_TIMER_COUNTS_DOWN +#define CONFIG_SYS_TIMER_COUNTER (MVEBU_TIMER_BASE + 0x14) +#define CONFIG_SYS_TIMER_RATE 25000000 + /* Common SPL configuration */ #ifndef CONFIG_SPL_LDSCRIPT #define CONFIG_SPL_LDSCRIPT "arch/arm/mach-mvebu/u-boot-spl.lds" diff --git a/arch/arm/mach-mvebu/timer.c b/arch/arm/mach-mvebu/timer.c index 5449a89..aef2df2 100644 --- a/arch/arm/mach-mvebu/timer.c +++ b/arch/arm/mach-mvebu/timer.c @@ -2,6 +2,8 @@ * Copyright (C) Marvell International Ltd. and its affiliates * Written-by: Prafulla Wadaskar prafulla@marvell.com * + * Copyright (C) 2015 Stefan Roese sr@denx.de + * * SPDX-License-Identifier: GPL-2.0+ */
@@ -9,108 +11,14 @@ #include <asm/io.h> #include <asm/arch/soc.h>
-#define UBOOT_CNTR 0 /* counter to use for U-Boot timer */ - -/* - * ARM Timers Registers Map - */ -#define CNTMR_CTRL_REG &tmr_regs->ctrl -#define CNTMR_RELOAD_REG(tmrnum) &tmr_regs->tmr[tmrnum].reload -#define CNTMR_VAL_REG(tmrnum) &tmr_regs->tmr[tmrnum].val - -/* - * ARM Timers Control Register - * CPU_TIMERS_CTRL_REG (CTCR) - */ -#define CTCR_ARM_TIMER_EN_OFFS(cntr) (cntr * 2) -#define CTCR_ARM_TIMER_EN(cntr) (1 << CTCR_ARM_TIMER_EN_OFFS(cntr)) - -#define CTCR_ARM_TIMER_AUTO_OFFS(cntr) ((cntr * 2) + 1) -#define CTCR_ARM_TIMER_AUTO_EN(cntr) (1 << CTCR_ARM_TIMER_AUTO_OFFS(cntr)) - -/* Only Armada XP have the 25MHz enable bit (Kirkwood doesn't) */ -#if defined(CONFIG_ARMADA_XP) -#define CTCR_ARM_TIMER_25MHZ_OFFS(cntr) (cntr + 11) -#define CTCR_ARM_TIMER_25MHZ(cntr) (1 << CTCR_ARM_TIMER_25MHZ_OFFS(cntr)) -#else -#define CTCR_ARM_TIMER_25MHZ(cntr) 0 -#endif - -#define TIMER_LOAD_VAL 0xffffffff - -#define timestamp gd->arch.tbl -#define lastdec gd->arch.lastinc - -static int init_done __attribute__((section(".data"))) = 0; - -/* Timer reload and current value registers */ -struct kwtmr_val { - u32 reload; /* Timer reload reg */ - u32 val; /* Timer value reg */ -}; - -/* Timer registers */ -struct kwtmr_registers { - u32 ctrl; /* Timer control reg */ - u32 pad[3]; - struct kwtmr_val tmr[4]; - u32 wdt_reload; - u32 wdt_val; -}; - DECLARE_GLOBAL_DATA_PTR;
-static struct kwtmr_registers *tmr_regs = - (struct kwtmr_registers *)MVEBU_TIMER_BASE; - -static inline ulong read_timer(void) -{ - return readl(CNTMR_VAL_REG(UBOOT_CNTR)) / (CONFIG_SYS_TCLK / 1000); -} - -ulong get_timer_masked(void) -{ - ulong now = read_timer(); - - if (lastdec >= now) { - /* normal mode */ - timestamp += lastdec - now; - } else { - /* we have an overflow ... */ - timestamp += lastdec + - (TIMER_LOAD_VAL / (CONFIG_SYS_TCLK / 1000)) - now; - } - lastdec = now; +#define TIMER_LOAD_VAL 0xffffffff
- return timestamp; -} - -ulong get_timer(ulong base) -{ - return get_timer_masked() - base; -} - -void __udelay(unsigned long usec) -{ - uint current; - ulong delayticks; - - current = readl(CNTMR_VAL_REG(UBOOT_CNTR)); - delayticks = (usec * (CONFIG_SYS_TCLK / 1000000)); - - if (current < delayticks) { - delayticks -= current; - while (readl(CNTMR_VAL_REG(UBOOT_CNTR)) < current) ; - while ((TIMER_LOAD_VAL - delayticks) < - readl(CNTMR_VAL_REG(UBOOT_CNTR))) ; - } else { - while (readl(CNTMR_VAL_REG(UBOOT_CNTR)) > - (current - delayticks)) ; - } -} +static int init_done __attribute__((section(".data"))) = 0;
/* - * init the counter + * Timer initialization */ int timer_init(void) { @@ -120,35 +28,15 @@ int timer_init(void) init_done = 1;
/* load value into timer */ - writel(TIMER_LOAD_VAL, CNTMR_RELOAD_REG(UBOOT_CNTR)); - writel(TIMER_LOAD_VAL, CNTMR_VAL_REG(UBOOT_CNTR)); + writel(TIMER_LOAD_VAL, MVEBU_TIMER_BASE + 0x10); + writel(TIMER_LOAD_VAL, MVEBU_TIMER_BASE + 0x14);
+#if defined(CONFIG_ARMADA_XP) + /* On Armada XP / 38x ..., the 25MHz clock source needs to be enabled */ + setbits_le32(MVEBU_TIMER_BASE + 0x00, BIT(11)); +#endif /* enable timer in auto reload mode */ - clrsetbits_le32(CNTMR_CTRL_REG, CTCR_ARM_TIMER_25MHZ(UBOOT_CNTR), - CTCR_ARM_TIMER_EN(UBOOT_CNTR) | - CTCR_ARM_TIMER_AUTO_EN(UBOOT_CNTR)); - - /* init the timestamp and lastdec value */ - lastdec = read_timer(); - timestamp = 0; + setbits_le32(MVEBU_TIMER_BASE + 0x00, 0x3);
return 0; } - -/* - * 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; -}