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board: stm32: switch to DM STM32 timer

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Use available DM stm32_timer driver instead of dedicated
mach-stm32/stm32fx/timer.c.

Remove all defines or files previously used for timer usage in
arch/arm/include/asm/arch-stm32fx and in arch/arm/mach-stm32/stm32fx

Enable DM STM32_TIMER for STM32F4/F7 and H7.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrice Chotard 2018-02-07 10:44:50 +01:00 committed by Tom Rini
parent cd389c03f2
commit aa5e3e22f4
17 changed files with 9 additions and 365 deletions
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3
arch/arm/include/asm/arch-stm32f4/stm32.h
View file

@ -38,9 +38,6 @@ struct stm32_u_id_regs {
#define STM32_U_ID_BASE (STM32_SYSMEM_BASE + 0x7A10)
#define STM32_U_ID ((struct stm32_u_id_regs *)STM32_U_ID_BASE)
#define STM32_RCC_BASE (STM32_AHB1PERIPH_BASE + 0x3800)
#define STM32_RCC ((struct stm32_rcc_regs *)STM32_RCC_BASE)
#define FLASH_CNTL_BASE (STM32_AHB1PERIPH_BASE + 0x3C00)
static const u32 sect_sz_kb[CONFIG_SYS_MAX_FLASH_SECT] = {

15
arch/arm/include/asm/arch-stm32f4/stm32_defs.h
View file

@ -1,15 +0,0 @@
/*
* Copyright (C) 2016, STMicroelectronics - All Rights Reserved
* Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __STM32_DEFS_H__
#define __STM32_DEFS_H__
#include <asm/arch/stm32_periph.h>
int clock_setup(enum periph_clock);
#endif

53
arch/arm/include/asm/arch-stm32f7/gpt.h
View file

@ -1,53 +0,0 @@
/*
* Copyright (C) 2016, STMicroelectronics - All Rights Reserved
* Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _STM32_GPT_H
#define _STM32_GPT_H
#include <asm/arch/stm32.h>
struct gpt_regs {
u32 cr1;
u32 cr2;
u32 smcr;
u32 dier;
u32 sr;
u32 egr;
u32 ccmr1;
u32 ccmr2;
u32 ccer;
u32 cnt;
u32 psc;
u32 arr;
u32 reserved;
u32 ccr1;
u32 ccr2;
u32 ccr3;
u32 ccr4;
u32 reserved1;
u32 dcr;
u32 dmar;
u32 tim2_5_or;
};
struct gpt_regs *const gpt1_regs_ptr =
(struct gpt_regs *)TIM2_BASE;
/* Timer control1 register */
#define GPT_CR1_CEN BIT(0)
#define GPT_MODE_AUTO_RELOAD BIT(7)
/* Auto reload register for free running config */
#define GPT_FREE_RUNNING 0xFFFFFFFF
/* Timer, HZ specific defines */
#define CONFIG_STM32_HZ 1000
/* Timer Event Generation registers */
#define TIM_EGR_UG BIT(0)
#endif

5
arch/arm/include/asm/arch-stm32f7/stm32.h
View file

@ -25,7 +25,6 @@
#define AHB2_PERIPH_BASE (PERIPH_BASE + 0x10000000)
#define AHB3_PERIPH_BASE (PERIPH_BASE + 0x20000000)
#define TIM2_BASE (APB1_PERIPH_BASE + 0x0000)
#define USART2_BASE (APB1_PERIPH_BASE + 0x4400)
#define USART3_BASE (APB1_PERIPH_BASE + 0x4800)
#define PWR_BASE (APB1_PERIPH_BASE + 0x7000)
@ -45,7 +44,6 @@
#define STM32_GPIOI_BASE (AHB1_PERIPH_BASE + 0x2000)
#define STM32_GPIOJ_BASE (AHB1_PERIPH_BASE + 0x2400)
#define STM32_GPIOK_BASE (AHB1_PERIPH_BASE + 0x2800)
#define RCC_BASE (AHB1_PERIPH_BASE + 0x3800)
#define FLASH_CNTL_BASE (AHB1_PERIPH_BASE + 0x3C00)
@ -59,9 +57,6 @@ static const u32 sect_sz_kb[CONFIG_SYS_MAX_FLASH_SECT] = {
#define STM32_BUS_MASK GENMASK(31, 16)
#define STM32_RCC ((struct stm32_rcc_regs *)RCC_BASE)
void stm32_flash_latency_cfg(int latency);
#endif /* _ASM_ARCH_HARDWARE_H */

15
arch/arm/include/asm/arch-stm32f7/stm32_defs.h
View file

@ -1,15 +0,0 @@
/*
* Copyright (C) 2016, STMicroelectronics - All Rights Reserved
* Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __STM32_DEFS_H__
#define __STM32_DEFS_H__
#include <asm/arch/stm32_periph.h>
int clock_setup(enum periph_clock);
#endif

4
arch/arm/include/asm/arch-stm32f7/stm32_periph.h
View file

@ -20,8 +20,4 @@ enum periph_id {
PERIPH_ID_QUADSPI = 92,
};
enum periph_clock {
TIMER2_CLOCK_CFG,
};
#endif /* __ASM_ARM_ARCH_PERIPH_H */

7
arch/arm/mach-stm32/Kconfig
View file

@ -13,6 +13,8 @@ config STM32F4
select STM32_RCC
select STM32_RESET
select STM32_SERIAL
select STM32_TIMER
select TIMER
config STM32F7
bool "stm32f7 family"
@ -27,6 +29,8 @@ config STM32F7
select STM32_RCC
select STM32_RESET
select STM32_SERIAL
select STM32_TIMER
select TIMER
select SUPPORT_SPL
select SPL
select SPL_BOARD_INIT
@ -46,6 +50,7 @@ config STM32F7
select SPL_RAM
select SPL_SERIAL_SUPPORT
select SPL_SYS_MALLOC_SIMPLE
select SPL_TIMER
select SPL_XIP_SUPPORT
config STM32H7
@ -62,7 +67,9 @@ config STM32H7
select STM32_RCC
select STM32_RESET
select STM32_SERIAL
select STM32_TIMER
select SYSCON
select TIMER
source "arch/arm/mach-stm32/stm32f4/Kconfig"
source "arch/arm/mach-stm32/stm32f7/Kconfig"

2
arch/arm/mach-stm32/Makefile
View file

@ -5,5 +5,3 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-y += soc.o
obj-$(CONFIG_STM32F4) += stm32f4/
obj-$(CONFIG_STM32F7) += stm32f7/

11
arch/arm/mach-stm32/stm32f4/Makefile
View file

@ -1,11 +0,0 @@
#
# (C) Copyright 2000-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# (C) Copyright 2015
# Kamil Lulko, <kamil.lulko@gmail.com>
#
# SPDX-License-Identifier: GPL-2.0+
#
obj-y += timer.o

115
arch/arm/mach-stm32/stm32f4/timer.c
View file

@ -1,115 +0,0 @@
/*
* (C) Copyright 2015
* Kamil Lulko, <kamil.lulko@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <stm32_rcc.h>
#include <asm/io.h>
#include <asm/armv7m.h>
#include <asm/arch/stm32.h>
DECLARE_GLOBAL_DATA_PTR;
#define STM32_TIM2_BASE (STM32_APB1PERIPH_BASE + 0x0000)
#define RCC_APB1ENR_TIM2EN (1 << 0)
struct stm32_tim2_5 {
u32 cr1;
u32 cr2;
u32 smcr;
u32 dier;
u32 sr;
u32 egr;
u32 ccmr1;
u32 ccmr2;
u32 ccer;
u32 cnt;
u32 psc;
u32 arr;
u32 reserved1;
u32 ccr1;
u32 ccr2;
u32 ccr3;
u32 ccr4;
u32 reserved2;
u32 dcr;
u32 dmar;
u32 or;
};
#define TIM_CR1_CEN (1 << 0)
#define TIM_EGR_UG (1 << 0)
int timer_init(void)
{
struct stm32_tim2_5 *tim = (struct stm32_tim2_5 *)STM32_TIM2_BASE;
setbits_le32(&STM32_RCC->apb1enr, RCC_APB1ENR_TIM2EN);
writel(((CONFIG_SYS_CLK_FREQ / 2) / CONFIG_SYS_HZ_CLOCK) - 1,
&tim->psc);
writel(0xFFFFFFFF, &tim->arr);
writel(TIM_CR1_CEN, &tim->cr1);
setbits_le32(&tim->egr, TIM_EGR_UG);
gd->arch.tbl = 0;
gd->arch.tbu = 0;
gd->arch.lastinc = 0;
return 0;
}
ulong get_timer(ulong base)
{
return (get_ticks() / (CONFIG_SYS_HZ_CLOCK / CONFIG_SYS_HZ)) - base;
}
unsigned long long get_ticks(void)
{
struct stm32_tim2_5 *tim = (struct stm32_tim2_5 *)STM32_TIM2_BASE;
u32 now;
now = readl(&tim->cnt);
if (now >= gd->arch.lastinc)
gd->arch.tbl += (now - gd->arch.lastinc);
else
gd->arch.tbl += (0xFFFFFFFF - gd->arch.lastinc) + now;
gd->arch.lastinc = now;
return gd->arch.tbl;
}
void reset_timer(void)
{
struct stm32_tim2_5 *tim = (struct stm32_tim2_5 *)STM32_TIM2_BASE;
gd->arch.lastinc = readl(&tim->cnt);
gd->arch.tbl = 0;
}
/* delay x useconds */
void __udelay(ulong usec)
{
unsigned long long start;
start = get_ticks(); /* get current timestamp */
while ((get_ticks() - start) < usec)
; /* loop till time has passed */
}
/*
* 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 CONFIG_SYS_HZ_CLOCK;
}

8
arch/arm/mach-stm32/stm32f7/Makefile
View file

@ -1,8 +0,0 @@
#
# Copyright (C) 2016, STMicroelectronics - All Rights Reserved
# Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
#
# SPDX-License-Identifier: GPL-2.0+
#
obj-y += timer.o

113
arch/arm/mach-stm32/stm32f7/timer.c
View file

@ -1,113 +0,0 @@
/*
* Copyright (C) 2016, STMicroelectronics - All Rights Reserved
* Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <stm32_rcc.h>
#include <asm/io.h>
#include <asm/arch/stm32.h>
#include <asm/arch/stm32_defs.h>
#include <asm/arch/gpt.h>
#define READ_TIMER() (readl(&gpt1_regs_ptr->cnt) & GPT_FREE_RUNNING)
#define GPT_RESOLUTION (CONFIG_SYS_HZ_CLOCK/CONFIG_STM32_HZ)
DECLARE_GLOBAL_DATA_PTR;
#define timestamp gd->arch.tbl
#define lastdec gd->arch.lastinc
int timer_init(void)
{
/* Timer2 clock configuration */
clock_setup(TIMER2_CLOCK_CFG);
/* Stop the timer */
writel(readl(&gpt1_regs_ptr->cr1) & ~GPT_CR1_CEN, &gpt1_regs_ptr->cr1);
writel((CONFIG_SYS_CLK_FREQ / 2 / CONFIG_SYS_HZ_CLOCK) - 1,
&gpt1_regs_ptr->psc);
/* Configure timer for auto-reload */
writel(readl(&gpt1_regs_ptr->cr1) | GPT_MODE_AUTO_RELOAD,
&gpt1_regs_ptr->cr1);
/* load value for free running */
writel(GPT_FREE_RUNNING, &gpt1_regs_ptr->arr);
/* start timer */
writel(readl(&gpt1_regs_ptr->cr1) | GPT_CR1_CEN, &gpt1_regs_ptr->cr1);
writel(readl(&gpt1_regs_ptr->egr) | TIM_EGR_UG, &gpt1_regs_ptr->egr);
/* Reset the timer */
lastdec = READ_TIMER();
timestamp = 0;
return 0;
}
/*
* timer without interrupts
*/
ulong get_timer(ulong base)
{
return (get_timer_masked() / GPT_RESOLUTION) - base;
}
void __udelay(unsigned long usec)
{
ulong tmo;
ulong start = get_timer_masked();
ulong tenudelcnt = CONFIG_SYS_HZ_CLOCK / (1000 * 100);
ulong rndoff;
rndoff = (usec % 10) ? 1 : 0;
/* tenudelcnt timer tick gives 10 microsecconds delay */
tmo = ((usec / 10) + rndoff) * tenudelcnt;
while ((ulong) (get_timer_masked() - start) < tmo)
;
}
ulong get_timer_masked(void)
{
ulong now = READ_TIMER();
if (now >= lastdec) {
/* normal mode */
timestamp += now - lastdec;
} else {
/* we have an overflow ... */
timestamp += now + GPT_FREE_RUNNING - lastdec;
}
lastdec = now;
return timestamp;
}
void udelay_masked(unsigned long usec)
{
return udelay(usec);
}
/*
* 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 CONFIG_STM32_HZ;
}

1
board/st/stm32f746-disco/stm32f746-disco.c
View file

@ -14,7 +14,6 @@
#include <asm/arch/stm32.h>
#include <asm/arch/gpio.h>
#include <asm/arch/stm32_periph.h>
#include <asm/arch/stm32_defs.h>
#include <asm/arch/syscfg.h>
#include <asm/gpio.h>

15
drivers/clk/clk_stm32f.c
View file

@ -87,10 +87,6 @@
#define RCC_APB2ENR_SYSCFGEN BIT(14)
#define RCC_APB2ENR_SAI1EN BIT(22)
enum periph_clock {
TIMER2_CLOCK_CFG,
};
static const struct stm32_clk_info stm32f4_clk_info = {
/* 180 MHz */
.sys_pll_psc = {
@ -438,17 +434,6 @@ static int stm32_clk_enable(struct clk *clk)
return 0;
}
void clock_setup(int peripheral)
{
switch (peripheral) {
case TIMER2_CLOCK_CFG:
setbits_le32(&STM32_RCC->apb1enr, RCC_APB1ENR_TIM2EN);
break;
default:
break;
}
}
static int stm32_clk_probe(struct udevice *dev)
{
struct ofnode_phandle_args args;

1
drivers/spi/stm32_qspi.c
View file

@ -16,7 +16,6 @@
#include <dm.h>
#include <errno.h>
#include <asm/arch/stm32.h>
#include <asm/arch/stm32_defs.h>
#include <clk.h>
DECLARE_GLOBAL_DATA_PTR;

3
include/configs/stm32h743-disco.h
View file

@ -24,8 +24,7 @@
#define CONFIG_ENV_SIZE (8 << 10)
#define CONFIG_SYS_ARCH_TIMER
#define CONFIG_SYS_HZ_CLOCK 250000000
#define CONFIG_SYS_HZ_CLOCK 1000000
#define CONFIG_CMDLINE_TAG
#define CONFIG_SETUP_MEMORY_TAGS

3
include/configs/stm32h743-eval.h
View file

@ -24,8 +24,7 @@
#define CONFIG_ENV_SIZE (8 << 10)
#define CONFIG_SYS_ARCH_TIMER
#define CONFIG_SYS_HZ_CLOCK 250000000
#define CONFIG_SYS_HZ_CLOCK 1000000
#define CONFIG_CMDLINE_TAG
#define CONFIG_SETUP_MEMORY_TAGS