From: Patrice Chotard Date: Wed, 7 Feb 2018 09:44:50 +0000 (+0100) Subject: board: stm32: switch to DM STM32 timer X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=aa5e3e22f4d6;p=u-boot.git board: stm32: switch to DM STM32 timer 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 --- diff --git a/arch/arm/include/asm/arch-stm32f4/stm32.h b/arch/arm/include/asm/arch-stm32f4/stm32.h index 0449fceced..763b18cb54 100644 --- a/arch/arm/include/asm/arch-stm32f4/stm32.h +++ b/arch/arm/include/asm/arch-stm32f4/stm32.h @@ -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] = { diff --git a/arch/arm/include/asm/arch-stm32f4/stm32_defs.h b/arch/arm/include/asm/arch-stm32f4/stm32_defs.h deleted file mode 100644 index 9a967ac38a..0000000000 --- a/arch/arm/include/asm/arch-stm32f4/stm32_defs.h +++ /dev/null @@ -1,15 +0,0 @@ -/* - * Copyright (C) 2016, STMicroelectronics - All Rights Reserved - * Author(s): Vikas Manocha, for STMicroelectronics. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#ifndef __STM32_DEFS_H__ -#define __STM32_DEFS_H__ -#include - -int clock_setup(enum periph_clock); - -#endif - diff --git a/arch/arm/include/asm/arch-stm32f7/gpt.h b/arch/arm/include/asm/arch-stm32f7/gpt.h deleted file mode 100644 index b43dc612c8..0000000000 --- a/arch/arm/include/asm/arch-stm32f7/gpt.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Copyright (C) 2016, STMicroelectronics - All Rights Reserved - * Author(s): Vikas Manocha, for STMicroelectronics. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#ifndef _STM32_GPT_H -#define _STM32_GPT_H - -#include - -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 diff --git a/arch/arm/include/asm/arch-stm32f7/stm32.h b/arch/arm/include/asm/arch-stm32f7/stm32.h index f54e6f1955..40df891426 100644 --- a/arch/arm/include/asm/arch-stm32f7/stm32.h +++ b/arch/arm/include/asm/arch-stm32f7/stm32.h @@ -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 */ diff --git a/arch/arm/include/asm/arch-stm32f7/stm32_defs.h b/arch/arm/include/asm/arch-stm32f7/stm32_defs.h deleted file mode 100644 index 9a967ac38a..0000000000 --- a/arch/arm/include/asm/arch-stm32f7/stm32_defs.h +++ /dev/null @@ -1,15 +0,0 @@ -/* - * Copyright (C) 2016, STMicroelectronics - All Rights Reserved - * Author(s): Vikas Manocha, for STMicroelectronics. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#ifndef __STM32_DEFS_H__ -#define __STM32_DEFS_H__ -#include - -int clock_setup(enum periph_clock); - -#endif - diff --git a/arch/arm/include/asm/arch-stm32f7/stm32_periph.h b/arch/arm/include/asm/arch-stm32f7/stm32_periph.h index 7b8f66a034..38d4ade13d 100644 --- a/arch/arm/include/asm/arch-stm32f7/stm32_periph.h +++ b/arch/arm/include/asm/arch-stm32f7/stm32_periph.h @@ -20,8 +20,4 @@ enum periph_id { PERIPH_ID_QUADSPI = 92, }; -enum periph_clock { - TIMER2_CLOCK_CFG, -}; - #endif /* __ASM_ARM_ARCH_PERIPH_H */ diff --git a/arch/arm/mach-stm32/Kconfig b/arch/arm/mach-stm32/Kconfig index f79b1a2c70..13532843fb 100644 --- a/arch/arm/mach-stm32/Kconfig +++ b/arch/arm/mach-stm32/Kconfig @@ -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" diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile index c2806af69b..d0f2a96b9f 100644 --- a/arch/arm/mach-stm32/Makefile +++ b/arch/arm/mach-stm32/Makefile @@ -5,5 +5,3 @@ # SPDX-License-Identifier: GPL-2.0+ # obj-y += soc.o -obj-$(CONFIG_STM32F4) += stm32f4/ -obj-$(CONFIG_STM32F7) += stm32f7/ diff --git a/arch/arm/mach-stm32/stm32f4/Makefile b/arch/arm/mach-stm32/stm32f4/Makefile deleted file mode 100644 index 86c81bbe44..0000000000 --- a/arch/arm/mach-stm32/stm32f4/Makefile +++ /dev/null @@ -1,11 +0,0 @@ -# -# (C) Copyright 2000-2006 -# Wolfgang Denk, DENX Software Engineering, wd@denx.de. -# -# (C) Copyright 2015 -# Kamil Lulko, -# -# SPDX-License-Identifier: GPL-2.0+ -# - -obj-y += timer.o diff --git a/arch/arm/mach-stm32/stm32f4/timer.c b/arch/arm/mach-stm32/stm32f4/timer.c deleted file mode 100644 index 00b1d4abda..0000000000 --- a/arch/arm/mach-stm32/stm32f4/timer.c +++ /dev/null @@ -1,115 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include - -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; -} diff --git a/arch/arm/mach-stm32/stm32f7/Makefile b/arch/arm/mach-stm32/stm32f7/Makefile deleted file mode 100644 index 8132c13234..0000000000 --- a/arch/arm/mach-stm32/stm32f7/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# -# Copyright (C) 2016, STMicroelectronics - All Rights Reserved -# Author(s): Vikas Manocha, for STMicroelectronics. -# -# SPDX-License-Identifier: GPL-2.0+ -# - -obj-y += timer.o diff --git a/arch/arm/mach-stm32/stm32f7/timer.c b/arch/arm/mach-stm32/stm32f7/timer.c deleted file mode 100644 index 69d37a7c70..0000000000 --- a/arch/arm/mach-stm32/stm32f7/timer.c +++ /dev/null @@ -1,113 +0,0 @@ -/* - * Copyright (C) 2016, STMicroelectronics - All Rights Reserved - * Author(s): Vikas Manocha, for STMicroelectronics. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include -#include - -#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; -} diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c index 8da70281f9..ec39468fb8 100644 --- a/board/st/stm32f746-disco/stm32f746-disco.c +++ b/board/st/stm32f746-disco/stm32f746-disco.c @@ -14,7 +14,6 @@ #include #include #include -#include #include #include diff --git a/drivers/clk/clk_stm32f.c b/drivers/clk/clk_stm32f.c index bde31607cf..f1f02995d9 100644 --- a/drivers/clk/clk_stm32f.c +++ b/drivers/clk/clk_stm32f.c @@ -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; diff --git a/drivers/spi/stm32_qspi.c b/drivers/spi/stm32_qspi.c index ef2b64ec5f..558708a4a7 100644 --- a/drivers/spi/stm32_qspi.c +++ b/drivers/spi/stm32_qspi.c @@ -16,7 +16,6 @@ #include #include #include -#include #include DECLARE_GLOBAL_DATA_PTR; diff --git a/include/configs/stm32h743-disco.h b/include/configs/stm32h743-disco.h index aa2871d669..d6d35472ff 100644 --- a/include/configs/stm32h743-disco.h +++ b/include/configs/stm32h743-disco.h @@ -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 diff --git a/include/configs/stm32h743-eval.h b/include/configs/stm32h743-eval.h index aa2871d669..d6d35472ff 100644 --- a/include/configs/stm32h743-eval.h +++ b/include/configs/stm32h743-eval.h @@ -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