From 0a61ee880ceecfa8e3ac12774c4424a73c0ba91d Mon Sep 17 00:00:00 2001 From: Vikas Manocha Date: Fri, 15 Jan 2016 17:49:06 -0800 Subject: stm32: move stm32 specific code to mach-stm32 This patch moves stm32 sources at one place, with this armv7m now contains only generic stuff. Signed-off-by: Vikas Manocha diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 33c8411..876a620 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -702,8 +702,8 @@ config ARCH_UNIPHIER Support for UniPhier SoC family developed by Socionext Inc. (formerly, System LSI Business Division of Panasonic Corporation) -config TARGET_STM32F429_DISCOVERY - bool "Support STM32F429 Discovery" +config STM32 + bool "Support STM32" select CPU_V7M select DM select DM_SERIAL @@ -762,6 +762,8 @@ source "arch/arm/mach-s5pc1xx/Kconfig" source "arch/arm/mach-socfpga/Kconfig" +source "arch/arm/mach-stm32/Kconfig" + source "arch/arm/mach-tegra/Kconfig" source "arch/arm/mach-uniphier/Kconfig" @@ -836,7 +838,6 @@ source "board/spear/spear310/Kconfig" source "board/spear/spear320/Kconfig" source "board/spear/spear600/Kconfig" source "board/spear/x600/Kconfig" -source "board/st/stm32f429-discovery/Kconfig" source "board/st/stv0991/Kconfig" source "board/sunxi/Kconfig" source "board/syteco/zmx25/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 3d15673..cd7d880 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -56,6 +56,7 @@ machine-$(CONFIG_ORION5X) += orion5x machine-$(CONFIG_ARCH_S5PC1XX) += s5pc1xx machine-$(CONFIG_ARCH_SOCFPGA) += socfpga machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip +machine-$(CONFIG_STM32) += stm32 machine-$(CONFIG_TEGRA) += tegra machine-$(CONFIG_ARCH_UNIPHIER) += uniphier machine-$(CONFIG_ARCH_ZYNQ) += zynq diff --git a/arch/arm/cpu/armv7m/Makefile b/arch/arm/cpu/armv7m/Makefile index 93a1956..aff60e8 100644 --- a/arch/arm/cpu/armv7m/Makefile +++ b/arch/arm/cpu/armv7m/Makefile @@ -7,6 +7,3 @@ extra-y := start.o obj-y += cpu.o - -obj-$(CONFIG_STM32F1) += stm32f1/ -obj-$(CONFIG_STM32F4) += stm32f4/ diff --git a/arch/arm/cpu/armv7m/stm32f1/Makefile b/arch/arm/cpu/armv7m/stm32f1/Makefile deleted file mode 100644 index e2081db..0000000 --- a/arch/arm/cpu/armv7m/stm32f1/Makefile +++ /dev/null @@ -1,14 +0,0 @@ -# -# (C) Copyright 2000-2006 -# Wolfgang Denk, DENX Software Engineering, wd@denx.de. -# -# (C) Copyright 2015 -# Kamil Lulko, -# -# Copyright 2015 ATS Advanced Telematics Systems GmbH -# Copyright 2015 Konsulko Group, Matt Porter -# -# SPDX-License-Identifier: GPL-2.0+ -# - -obj-y += soc.o clock.o timer.o flash.o diff --git a/arch/arm/cpu/armv7m/stm32f1/clock.c b/arch/arm/cpu/armv7m/stm32f1/clock.c deleted file mode 100644 index 2820848..0000000 --- a/arch/arm/cpu/armv7m/stm32f1/clock.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * Copyright 2015 ATS Advanced Telematics Systems GmbH - * Copyright 2015 Konsulko Group, Matt Porter - * - * (C) Copyright 2014 - * STMicroelectronics - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include - -#define RCC_CR_HSION (1 << 0) -#define RCC_CR_HSEON (1 << 16) -#define RCC_CR_HSERDY (1 << 17) -#define RCC_CR_HSEBYP (1 << 18) -#define RCC_CR_CSSON (1 << 19) -#define RCC_CR_PLLON (1 << 24) -#define RCC_CR_PLLRDY (1 << 25) - -#define RCC_CFGR_PLLMUL_MASK 0x3C0000 -#define RCC_CFGR_PLLMUL_SHIFT 18 -#define RCC_CFGR_PLLSRC_HSE (1 << 16) - -#define RCC_CFGR_AHB_PSC_MASK 0xF0 -#define RCC_CFGR_APB1_PSC_MASK 0x700 -#define RCC_CFGR_APB2_PSC_MASK 0x3800 -#define RCC_CFGR_SW0 (1 << 0) -#define RCC_CFGR_SW1 (1 << 1) -#define RCC_CFGR_SW_MASK 0x3 -#define RCC_CFGR_SW_HSI 0 -#define RCC_CFGR_SW_HSE RCC_CFGR_SW0 -#define RCC_CFGR_SW_PLL RCC_CFGR_SW1 -#define RCC_CFGR_SWS0 (1 << 2) -#define RCC_CFGR_SWS1 (1 << 3) -#define RCC_CFGR_SWS_MASK 0xC -#define RCC_CFGR_SWS_HSI 0 -#define RCC_CFGR_SWS_HSE RCC_CFGR_SWS0 -#define RCC_CFGR_SWS_PLL RCC_CFGR_SWS1 -#define RCC_CFGR_HPRE_SHIFT 4 -#define RCC_CFGR_PPRE1_SHIFT 8 -#define RCC_CFGR_PPRE2_SHIFT 11 - -#define RCC_APB1ENR_PWREN (1 << 28) - -#define PWR_CR_VOS0 (1 << 14) -#define PWR_CR_VOS1 (1 << 15) -#define PWR_CR_VOS_MASK 0xC000 -#define PWR_CR_VOS_SCALE_MODE_1 (PWR_CR_VOS0 | PWR_CR_VOS1) -#define PWR_CR_VOS_SCALE_MODE_2 (PWR_CR_VOS1) -#define PWR_CR_VOS_SCALE_MODE_3 (PWR_CR_VOS0) - -#define FLASH_ACR_WS(n) n -#define FLASH_ACR_PRFTEN (1 << 8) -#define FLASH_ACR_ICEN (1 << 9) -#define FLASH_ACR_DCEN (1 << 10) - -struct psc { - u8 ahb_psc; - u8 apb1_psc; - u8 apb2_psc; -}; - -#define AHB_PSC_1 0 -#define AHB_PSC_2 0x8 -#define AHB_PSC_4 0x9 -#define AHB_PSC_8 0xA -#define AHB_PSC_16 0xB -#define AHB_PSC_64 0xC -#define AHB_PSC_128 0xD -#define AHB_PSC_256 0xE -#define AHB_PSC_512 0xF - -#define APB_PSC_1 0 -#define APB_PSC_2 0x4 -#define APB_PSC_4 0x5 -#define APB_PSC_8 0x6 -#define APB_PSC_16 0x7 - -#if !defined(CONFIG_STM32_HSE_HZ) -#error "CONFIG_STM32_HSE_HZ not defined!" -#else -#if (CONFIG_STM32_HSE_HZ == 8000000) -#define RCC_CFGR_PLLMUL_CFG 0x7 -struct psc psc_hse = { - .ahb_psc = AHB_PSC_1, - .apb1_psc = APB_PSC_2, - .apb2_psc = APB_PSC_1 -}; -#else -#error "No PLL/Prescaler configuration for given CONFIG_STM32_HSE_HZ exists" -#endif -#endif - -int configure_clocks(void) -{ - /* Reset RCC configuration */ - setbits_le32(&STM32_RCC->cr, RCC_CR_HSION); - writel(0, &STM32_RCC->cfgr); /* Reset CFGR */ - clrbits_le32(&STM32_RCC->cr, (RCC_CR_HSEON | RCC_CR_CSSON - | RCC_CR_PLLON)); - clrbits_le32(&STM32_RCC->cr, RCC_CR_HSEBYP); - writel(0, &STM32_RCC->cir); /* Disable all interrupts */ - - /* Configure for HSE+PLL operation */ - setbits_le32(&STM32_RCC->cr, RCC_CR_HSEON); - while (!(readl(&STM32_RCC->cr) & RCC_CR_HSERDY)) - ; - - /* Enable high performance mode, System frequency up to 168 MHz */ - setbits_le32(&STM32_RCC->apb1enr, RCC_APB1ENR_PWREN); - writel(PWR_CR_VOS_SCALE_MODE_1, &STM32_PWR->cr); - - setbits_le32(&STM32_RCC->cfgr, - RCC_CFGR_PLLMUL_CFG << RCC_CFGR_PLLMUL_SHIFT); - setbits_le32(&STM32_RCC->cfgr, RCC_CFGR_PLLSRC_HSE); - setbits_le32(&STM32_RCC->cfgr, (( - psc_hse.ahb_psc << RCC_CFGR_HPRE_SHIFT) - | (psc_hse.apb1_psc << RCC_CFGR_PPRE1_SHIFT) - | (psc_hse.apb2_psc << RCC_CFGR_PPRE2_SHIFT))); - - setbits_le32(&STM32_RCC->cr, RCC_CR_PLLON); - - while (!(readl(&STM32_RCC->cr) & RCC_CR_PLLRDY)) - ; - - /* 5 wait states, Prefetch enabled, D-Cache enabled, I-Cache enabled */ - writel(FLASH_ACR_WS(5) | FLASH_ACR_PRFTEN | FLASH_ACR_ICEN - | FLASH_ACR_DCEN, &STM32_FLASH->acr); - - clrbits_le32(&STM32_RCC->cfgr, (RCC_CFGR_SW0 | RCC_CFGR_SW1)); - setbits_le32(&STM32_RCC->cfgr, RCC_CFGR_SW_PLL); - - while ((readl(&STM32_RCC->cfgr) & RCC_CFGR_SWS_MASK) != - RCC_CFGR_SWS_PLL) - ; - - return 0; -} - -unsigned long clock_get(enum clock clck) -{ - u32 sysclk = 0; - u32 shift = 0; - /* PLL table lookups for clock computation */ - u8 pll_mul_table[16] = { - 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16 - }; - /* Prescaler table lookups for clock computation */ - u8 ahb_psc_table[16] = { - 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9 - }; - u8 apb_psc_table[8] = { - 0, 0, 0, 0, 1, 2, 3, 4 - }; - - if ((readl(&STM32_RCC->cfgr) & RCC_CFGR_SWS_MASK) == - RCC_CFGR_SWS_PLL) { - u16 pll; - pll = ((readl(&STM32_RCC->cfgr) & RCC_CFGR_PLLMUL_MASK) - >> RCC_CFGR_PLLMUL_SHIFT); - sysclk = CONFIG_STM32_HSE_HZ * pll_mul_table[pll]; - } - - switch (clck) { - case CLOCK_CORE: - return sysclk; - break; - case CLOCK_AHB: - shift = ahb_psc_table[( - (readl(&STM32_RCC->cfgr) & RCC_CFGR_AHB_PSC_MASK) - >> RCC_CFGR_HPRE_SHIFT)]; - return sysclk >>= shift; - break; - case CLOCK_APB1: - shift = apb_psc_table[( - (readl(&STM32_RCC->cfgr) & RCC_CFGR_APB1_PSC_MASK) - >> RCC_CFGR_PPRE1_SHIFT)]; - return sysclk >>= shift; - break; - case CLOCK_APB2: - shift = apb_psc_table[( - (readl(&STM32_RCC->cfgr) & RCC_CFGR_APB2_PSC_MASK) - >> RCC_CFGR_PPRE2_SHIFT)]; - return sysclk >>= shift; - break; - default: - return 0; - break; - } -} diff --git a/arch/arm/cpu/armv7m/stm32f1/flash.c b/arch/arm/cpu/armv7m/stm32f1/flash.c deleted file mode 100644 index 7d41f63..0000000 --- a/arch/arm/cpu/armv7m/stm32f1/flash.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * Copyright 2015 ATS Advanced Telematics Systems GmbH - * Copyright 2015 Konsulko Group, Matt Porter - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include - -#define STM32_FLASH_KEY1 0x45670123 -#define STM32_FLASH_KEY2 0xcdef89ab - -#define STM32_NUM_BANKS 2 -#define STM32_MAX_BANK 0x200 - -flash_info_t flash_info[STM32_NUM_BANKS]; -static struct stm32_flash_bank_regs *flash_bank[STM32_NUM_BANKS]; - -static void stm32f1_flash_lock(u8 bank, u8 lock) -{ - if (lock) { - setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_LOCK); - } else { - writel(STM32_FLASH_KEY1, &flash_bank[bank]->keyr); - writel(STM32_FLASH_KEY2, &flash_bank[bank]->keyr); - } -} - -/* Only XL devices are supported (2 KiB sector size) */ -unsigned long flash_init(void) -{ - u8 i, banks; - u16 j, size; - - /* Set up accessors for XL devices with wonky register layout */ - flash_bank[0] = (struct stm32_flash_bank_regs *)&STM32_FLASH->keyr; - flash_bank[1] = (struct stm32_flash_bank_regs *)&STM32_FLASH->keyr2; - - /* - * Get total flash size (in KiB) and configure number of banks - * present and sector count per bank. - */ - size = readw(&STM32_DES->flash_size); - if (size <= STM32_MAX_BANK) { - banks = 1; - flash_info[0].sector_count = size >> 1; - } else if (size > STM32_MAX_BANK) { - banks = 2; - flash_info[0].sector_count = STM32_MAX_BANK >> 1; - flash_info[1].sector_count = (size - STM32_MAX_BANK) >> 1; - } - - /* Configure start/size for all sectors */ - for (i = 0; i < banks; i++) { - flash_info[i].flash_id = FLASH_STM32F1; - flash_info[i].start[0] = CONFIG_SYS_FLASH_BASE + (i << 19); - flash_info[i].size = 2048; - for (j = 1; (j < flash_info[i].sector_count); j++) { - flash_info[i].start[j] = flash_info[i].start[j - 1] - + 2048; - flash_info[i].size += 2048; - } - } - - return size << 10; -} - -void flash_print_info(flash_info_t *info) -{ - int i; - - if (info->flash_id == FLASH_UNKNOWN) { - printf("Missing or unknown FLASH type\n"); - return; - } else if (info->flash_id == FLASH_STM32F1) { - printf("STM32F1 Embedded Flash\n"); - } - - printf(" Size: %ld MB in %d Sectors\n", - info->size >> 10, info->sector_count); - - printf(" Sector Start Addresses:"); - for (i = 0; i < info->sector_count; ++i) { - if ((i % 5) == 0) - printf("\n "); - printf(" %08lX%s", - info->start[i], - info->protect[i] ? " (RO)" : " "); - } - printf("\n"); - return; -} - -int flash_erase(flash_info_t *info, int first, int last) -{ - u8 bank = 0xff; - int i; - - for (i = 0; i < STM32_NUM_BANKS; i++) { - if (info == &flash_info[i]) { - bank = i; - break; - } - } - if (bank == 0xff) - return -1; - - stm32f1_flash_lock(bank, 0); - - for (i = first; i <= last; i++) { - while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY) - ; - - setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PER); - - writel(info->start[i], &flash_bank[bank]->ar); - - setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_STRT); - - while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY) - ; - } - - clrbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PER); - - stm32f1_flash_lock(bank, 1); - - return 0; -} - -int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) -{ - ulong i; - u8 bank = 0xff; - - if (addr & 1) { - printf("Flash address must be half word aligned\n"); - return -1; - } - - if (cnt & 1) { - printf("Flash length must be half word aligned\n"); - return -1; - } - - for (i = 0; i < 2; i++) { - if (info == &flash_info[i]) { - bank = i; - break; - } - } - - if (bank == 0xff) - return -1; - - while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY) - ; - - stm32f1_flash_lock(bank, 0); - - setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PG); - - /* STM32F1 requires half word writes */ - for (i = 0; i < cnt >> 1; i++) { - *(u16 *)(addr + i * 2) = ((u16 *)src)[i]; - while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY) - ; - } - - clrbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PG); - - stm32f1_flash_lock(bank, 1); - - return 0; -} diff --git a/arch/arm/cpu/armv7m/stm32f1/soc.c b/arch/arm/cpu/armv7m/stm32f1/soc.c deleted file mode 100644 index 4438621..0000000 --- a/arch/arm/cpu/armv7m/stm32f1/soc.c +++ /dev/null @@ -1,36 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * Copyright 2015 ATS Advanced Telematics Systems GmbH - * Copyright 2015 Konsulko Group, Matt Porter - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include - -u32 get_cpu_rev(void) -{ - return 0; -} - -int arch_cpu_init(void) -{ - configure_clocks(); - - /* - * Configure the memory protection unit (MPU) to allow full access to - * the whole 4GB address space. - */ - writel(0, &V7M_MPU->rnr); - writel(0, &V7M_MPU->rbar); - writel((V7M_MPU_RASR_AP_RW_RW | V7M_MPU_RASR_SIZE_4GB - | V7M_MPU_RASR_EN), &V7M_MPU->rasr); - writel(V7M_MPU_CTRL_ENABLE | V7M_MPU_CTRL_HFNMIENA, &V7M_MPU->ctrl); - - return 0; -} diff --git a/arch/arm/cpu/armv7m/stm32f1/timer.c b/arch/arm/cpu/armv7m/stm32f1/timer.c deleted file mode 100644 index 6a26198..0000000 --- a/arch/arm/cpu/armv7m/stm32f1/timer.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * Copyright 2015 ATS Advanced Telematics Systems GmbH - * Copyright 2015 Konsulko Group, Matt Porter - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#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); - - if (clock_get(CLOCK_AHB) == clock_get(CLOCK_APB1)) - writel((clock_get(CLOCK_APB1) / CONFIG_SYS_HZ_CLOCK) - 1, - &tim->psc); - else - writel(((clock_get(CLOCK_APB1) * 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/cpu/armv7m/stm32f4/Makefile b/arch/arm/cpu/armv7m/stm32f4/Makefile deleted file mode 100644 index 42d01db..0000000 --- a/arch/arm/cpu/armv7m/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 += soc.o clock.o timer.o flash.o diff --git a/arch/arm/cpu/armv7m/stm32f4/clock.c b/arch/arm/cpu/armv7m/stm32f4/clock.c deleted file mode 100644 index 3deb17a..0000000 --- a/arch/arm/cpu/armv7m/stm32f4/clock.c +++ /dev/null @@ -1,223 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * (C) Copyright 2014 - * STMicroelectronics - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include - -#define RCC_CR_HSION (1 << 0) -#define RCC_CR_HSEON (1 << 16) -#define RCC_CR_HSERDY (1 << 17) -#define RCC_CR_HSEBYP (1 << 18) -#define RCC_CR_CSSON (1 << 19) -#define RCC_CR_PLLON (1 << 24) -#define RCC_CR_PLLRDY (1 << 25) - -#define RCC_PLLCFGR_PLLM_MASK 0x3F -#define RCC_PLLCFGR_PLLN_MASK 0x7FC0 -#define RCC_PLLCFGR_PLLP_MASK 0x30000 -#define RCC_PLLCFGR_PLLQ_MASK 0xF000000 -#define RCC_PLLCFGR_PLLSRC (1 << 22) -#define RCC_PLLCFGR_PLLN_SHIFT 6 -#define RCC_PLLCFGR_PLLP_SHIFT 16 -#define RCC_PLLCFGR_PLLQ_SHIFT 24 - -#define RCC_CFGR_AHB_PSC_MASK 0xF0 -#define RCC_CFGR_APB1_PSC_MASK 0x1C00 -#define RCC_CFGR_APB2_PSC_MASK 0xE000 -#define RCC_CFGR_SW0 (1 << 0) -#define RCC_CFGR_SW1 (1 << 1) -#define RCC_CFGR_SW_MASK 0x3 -#define RCC_CFGR_SW_HSI 0 -#define RCC_CFGR_SW_HSE RCC_CFGR_SW0 -#define RCC_CFGR_SW_PLL RCC_CFGR_SW1 -#define RCC_CFGR_SWS0 (1 << 2) -#define RCC_CFGR_SWS1 (1 << 3) -#define RCC_CFGR_SWS_MASK 0xC -#define RCC_CFGR_SWS_HSI 0 -#define RCC_CFGR_SWS_HSE RCC_CFGR_SWS0 -#define RCC_CFGR_SWS_PLL RCC_CFGR_SWS1 -#define RCC_CFGR_HPRE_SHIFT 4 -#define RCC_CFGR_PPRE1_SHIFT 10 -#define RCC_CFGR_PPRE2_SHIFT 13 - -#define RCC_APB1ENR_PWREN (1 << 28) - -#define PWR_CR_VOS0 (1 << 14) -#define PWR_CR_VOS1 (1 << 15) -#define PWR_CR_VOS_MASK 0xC000 -#define PWR_CR_VOS_SCALE_MODE_1 (PWR_CR_VOS0 | PWR_CR_VOS1) -#define PWR_CR_VOS_SCALE_MODE_2 (PWR_CR_VOS1) -#define PWR_CR_VOS_SCALE_MODE_3 (PWR_CR_VOS0) - -#define FLASH_ACR_WS(n) n -#define FLASH_ACR_PRFTEN (1 << 8) -#define FLASH_ACR_ICEN (1 << 9) -#define FLASH_ACR_DCEN (1 << 10) - -struct pll_psc { - u8 pll_m; - u16 pll_n; - u8 pll_p; - u8 pll_q; - u8 ahb_psc; - u8 apb1_psc; - u8 apb2_psc; -}; - -#define AHB_PSC_1 0 -#define AHB_PSC_2 0x8 -#define AHB_PSC_4 0x9 -#define AHB_PSC_8 0xA -#define AHB_PSC_16 0xB -#define AHB_PSC_64 0xC -#define AHB_PSC_128 0xD -#define AHB_PSC_256 0xE -#define AHB_PSC_512 0xF - -#define APB_PSC_1 0 -#define APB_PSC_2 0x4 -#define APB_PSC_4 0x5 -#define APB_PSC_8 0x6 -#define APB_PSC_16 0x7 - -#if !defined(CONFIG_STM32_HSE_HZ) -#error "CONFIG_STM32_HSE_HZ not defined!" -#else -#if (CONFIG_STM32_HSE_HZ == 8000000) -#if (CONFIG_SYS_CLK_FREQ == 180000000) -/* 180 MHz */ -struct pll_psc sys_pll_psc = { - .pll_m = 8, - .pll_n = 360, - .pll_p = 2, - .pll_q = 8, - .ahb_psc = AHB_PSC_1, - .apb1_psc = APB_PSC_4, - .apb2_psc = APB_PSC_2 -}; -#else -/* default 168 MHz */ -struct pll_psc sys_pll_psc = { - .pll_m = 8, - .pll_n = 336, - .pll_p = 2, - .pll_q = 7, - .ahb_psc = AHB_PSC_1, - .apb1_psc = APB_PSC_4, - .apb2_psc = APB_PSC_2 -}; -#endif -#else -#error "No PLL/Prescaler configuration for given CONFIG_STM32_HSE_HZ exists" -#endif -#endif - -int configure_clocks(void) -{ - /* Reset RCC configuration */ - setbits_le32(&STM32_RCC->cr, RCC_CR_HSION); - writel(0, &STM32_RCC->cfgr); /* Reset CFGR */ - clrbits_le32(&STM32_RCC->cr, (RCC_CR_HSEON | RCC_CR_CSSON - | RCC_CR_PLLON)); - writel(0x24003010, &STM32_RCC->pllcfgr); /* Reset value from RM */ - clrbits_le32(&STM32_RCC->cr, RCC_CR_HSEBYP); - writel(0, &STM32_RCC->cir); /* Disable all interrupts */ - - /* Configure for HSE+PLL operation */ - setbits_le32(&STM32_RCC->cr, RCC_CR_HSEON); - while (!(readl(&STM32_RCC->cr) & RCC_CR_HSERDY)) - ; - - /* Enable high performance mode, System frequency up to 180 MHz */ - setbits_le32(&STM32_RCC->apb1enr, RCC_APB1ENR_PWREN); - writel(PWR_CR_VOS_SCALE_MODE_1, &STM32_PWR->cr); - - setbits_le32(&STM32_RCC->cfgr, (( - sys_pll_psc.ahb_psc << RCC_CFGR_HPRE_SHIFT) - | (sys_pll_psc.apb1_psc << RCC_CFGR_PPRE1_SHIFT) - | (sys_pll_psc.apb2_psc << RCC_CFGR_PPRE2_SHIFT))); - - writel(sys_pll_psc.pll_m - | (sys_pll_psc.pll_n << RCC_PLLCFGR_PLLN_SHIFT) - | (((sys_pll_psc.pll_p >> 1) - 1) << RCC_PLLCFGR_PLLP_SHIFT) - | (sys_pll_psc.pll_q << RCC_PLLCFGR_PLLQ_SHIFT), - &STM32_RCC->pllcfgr); - setbits_le32(&STM32_RCC->pllcfgr, RCC_PLLCFGR_PLLSRC); - - setbits_le32(&STM32_RCC->cr, RCC_CR_PLLON); - - while (!(readl(&STM32_RCC->cr) & RCC_CR_PLLRDY)) - ; - - /* 5 wait states, Prefetch enabled, D-Cache enabled, I-Cache enabled */ - writel(FLASH_ACR_WS(5) | FLASH_ACR_PRFTEN | FLASH_ACR_ICEN - | FLASH_ACR_DCEN, &STM32_FLASH->acr); - - clrbits_le32(&STM32_RCC->cfgr, (RCC_CFGR_SW0 | RCC_CFGR_SW1)); - setbits_le32(&STM32_RCC->cfgr, RCC_CFGR_SW_PLL); - - while ((readl(&STM32_RCC->cfgr) & RCC_CFGR_SWS_MASK) != - RCC_CFGR_SWS_PLL) - ; - - return 0; -} - -unsigned long clock_get(enum clock clck) -{ - u32 sysclk = 0; - u32 shift = 0; - /* Prescaler table lookups for clock computation */ - u8 ahb_psc_table[16] = { - 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9 - }; - u8 apb_psc_table[8] = { - 0, 0, 0, 0, 1, 2, 3, 4 - }; - - if ((readl(&STM32_RCC->cfgr) & RCC_CFGR_SWS_MASK) == - RCC_CFGR_SWS_PLL) { - u16 pllm, plln, pllp; - pllm = (readl(&STM32_RCC->pllcfgr) & RCC_PLLCFGR_PLLM_MASK); - plln = ((readl(&STM32_RCC->pllcfgr) & RCC_PLLCFGR_PLLN_MASK) - >> RCC_PLLCFGR_PLLN_SHIFT); - pllp = ((((readl(&STM32_RCC->pllcfgr) & RCC_PLLCFGR_PLLP_MASK) - >> RCC_PLLCFGR_PLLP_SHIFT) + 1) << 1); - sysclk = ((CONFIG_STM32_HSE_HZ / pllm) * plln) / pllp; - } - - switch (clck) { - case CLOCK_CORE: - return sysclk; - break; - case CLOCK_AHB: - shift = ahb_psc_table[( - (readl(&STM32_RCC->cfgr) & RCC_CFGR_AHB_PSC_MASK) - >> RCC_CFGR_HPRE_SHIFT)]; - return sysclk >>= shift; - break; - case CLOCK_APB1: - shift = apb_psc_table[( - (readl(&STM32_RCC->cfgr) & RCC_CFGR_APB1_PSC_MASK) - >> RCC_CFGR_PPRE1_SHIFT)]; - return sysclk >>= shift; - break; - case CLOCK_APB2: - shift = apb_psc_table[( - (readl(&STM32_RCC->cfgr) & RCC_CFGR_APB2_PSC_MASK) - >> RCC_CFGR_PPRE2_SHIFT)]; - return sysclk >>= shift; - break; - default: - return 0; - break; - } -} diff --git a/arch/arm/cpu/armv7m/stm32f4/flash.c b/arch/arm/cpu/armv7m/stm32f4/flash.c deleted file mode 100644 index a379f47..0000000 --- a/arch/arm/cpu/armv7m/stm32f4/flash.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include - -#define STM32_FLASH_KEY1 0x45670123 -#define STM32_FLASH_KEY2 0xCDEF89AB - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - -const u32 sect_sz_kb[CONFIG_SYS_MAX_FLASH_SECT] = { - [0 ... 3] = 16 * 1024, - [4] = 64 * 1024, - [5 ... 11] = 128 * 1024 -}; - -static void stm32f4_flash_lock(u8 lock) -{ - if (lock) { - setbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_LOCK); - } else { - writel(STM32_FLASH_KEY1, &STM32_FLASH->key); - writel(STM32_FLASH_KEY2, &STM32_FLASH->key); - } -} - -unsigned long flash_init(void) -{ - unsigned long total_size = 0; - u8 i, j; - - for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { - flash_info[i].flash_id = FLASH_STM32F4; - flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT; - flash_info[i].start[0] = CONFIG_SYS_FLASH_BASE + (i << 20); - flash_info[i].size = sect_sz_kb[0]; - for (j = 1; j < CONFIG_SYS_MAX_FLASH_SECT; j++) { - flash_info[i].start[j] = flash_info[i].start[j - 1] - + (sect_sz_kb[j - 1]); - flash_info[i].size += sect_sz_kb[j]; - } - total_size += flash_info[i].size; - } - - return total_size; -} - -void flash_print_info(flash_info_t *info) -{ - int i; - - if (info->flash_id == FLASH_UNKNOWN) { - printf("missing or unknown FLASH type\n"); - return; - } else if (info->flash_id == FLASH_STM32F4) { - printf("STM32F4 Embedded Flash\n"); - } - - printf(" Size: %ld MB in %d Sectors\n", - info->size >> 20, info->sector_count); - - printf(" Sector Start Addresses:"); - for (i = 0; i < info->sector_count; ++i) { - if ((i % 5) == 0) - printf("\n "); - printf(" %08lX%s", - info->start[i], - info->protect[i] ? " (RO)" : " "); - } - printf("\n"); - return; -} - -int flash_erase(flash_info_t *info, int first, int last) -{ - u8 bank = 0xFF; - int i; - - for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { - if (info == &flash_info[i]) { - bank = i; - break; - } - } - if (bank == 0xFF) - return -1; - - stm32f4_flash_lock(0); - - for (i = first; i <= last; i++) { - while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) - ; - - /* clear old sector number before writing a new one */ - clrbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_SNB_MASK); - - if (bank == 0) { - setbits_le32(&STM32_FLASH->cr, - (i << STM32_FLASH_CR_SNB_OFFSET)); - } else if (bank == 1) { - setbits_le32(&STM32_FLASH->cr, - ((0x10 | i) << STM32_FLASH_CR_SNB_OFFSET)); - } else { - stm32f4_flash_lock(1); - return -1; - } - setbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_SER); - setbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_STRT); - - while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) - ; - - clrbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_SER); - } - - stm32f4_flash_lock(1); - return 0; -} - -int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) -{ - ulong i; - - while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) - ; - - stm32f4_flash_lock(0); - - setbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_PG); - /* To make things simple use byte writes only */ - for (i = 0; i < cnt; i++) { - *(uchar *)(addr + i) = src[i]; - while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) - ; - } - clrbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_PG); - stm32f4_flash_lock(1); - - return 0; -} diff --git a/arch/arm/cpu/armv7m/stm32f4/soc.c b/arch/arm/cpu/armv7m/stm32f4/soc.c deleted file mode 100644 index b5d06db..0000000 --- a/arch/arm/cpu/armv7m/stm32f4/soc.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include - -u32 get_cpu_rev(void) -{ - return 0; -} - -int arch_cpu_init(void) -{ - configure_clocks(); - - /* - * Configure the memory protection unit (MPU) to allow full access to - * the whole 4GB address space. - */ - writel(0, &V7M_MPU->rnr); - writel(0, &V7M_MPU->rbar); - writel((V7M_MPU_RASR_AP_RW_RW | V7M_MPU_RASR_SIZE_4GB - | V7M_MPU_RASR_EN), &V7M_MPU->rasr); - writel(V7M_MPU_CTRL_ENABLE | V7M_MPU_CTRL_HFNMIENA, &V7M_MPU->ctrl); - - return 0; -} - -void s_init(void) -{ -} diff --git a/arch/arm/cpu/armv7m/stm32f4/timer.c b/arch/arm/cpu/armv7m/stm32f4/timer.c deleted file mode 100644 index 1dee190..0000000 --- a/arch/arm/cpu/armv7m/stm32f4/timer.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * (C) Copyright 2015 - * Kamil Lulko, - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#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); - - if (clock_get(CLOCK_AHB) == clock_get(CLOCK_APB1)) - writel((clock_get(CLOCK_APB1) / CONFIG_SYS_HZ_CLOCK) - 1, - &tim->psc); - else - writel(((clock_get(CLOCK_APB1) * 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/Kconfig b/arch/arm/mach-stm32/Kconfig new file mode 100644 index 0000000..7dbeb04 --- /dev/null +++ b/arch/arm/mach-stm32/Kconfig @@ -0,0 +1,12 @@ +if STM32 + +config STM32F4 + bool "stm32f4 family" + +config STM32F1 + bool "stm32f1 family" + +source "arch/arm/mach-stm32/stm32f4/Kconfig" +source "arch/arm/mach-stm32/stm32f1/Kconfig" + +endif diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile new file mode 100644 index 0000000..ea06034 --- /dev/null +++ b/arch/arm/mach-stm32/Makefile @@ -0,0 +1,9 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-$(CONFIG_STM32F1) += stm32f1/ +obj-$(CONFIG_STM32F4) += stm32f4/ diff --git a/arch/arm/mach-stm32/stm32f1/Kconfig b/arch/arm/mach-stm32/stm32f1/Kconfig new file mode 100644 index 0000000..f627fd2 --- /dev/null +++ b/arch/arm/mach-stm32/stm32f1/Kconfig @@ -0,0 +1,3 @@ +if STM32F1 + +endif diff --git a/arch/arm/mach-stm32/stm32f1/Makefile b/arch/arm/mach-stm32/stm32f1/Makefile new file mode 100644 index 0000000..e2081db --- /dev/null +++ b/arch/arm/mach-stm32/stm32f1/Makefile @@ -0,0 +1,14 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# (C) Copyright 2015 +# Kamil Lulko, +# +# Copyright 2015 ATS Advanced Telematics Systems GmbH +# Copyright 2015 Konsulko Group, Matt Porter +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += soc.o clock.o timer.o flash.o diff --git a/arch/arm/mach-stm32/stm32f1/clock.c b/arch/arm/mach-stm32/stm32f1/clock.c new file mode 100644 index 0000000..2820848 --- /dev/null +++ b/arch/arm/mach-stm32/stm32f1/clock.c @@ -0,0 +1,196 @@ +/* + * (C) Copyright 2015 + * Kamil Lulko, + * + * Copyright 2015 ATS Advanced Telematics Systems GmbH + * Copyright 2015 Konsulko Group, Matt Porter + * + * (C) Copyright 2014 + * STMicroelectronics + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#define RCC_CR_HSION (1 << 0) +#define RCC_CR_HSEON (1 << 16) +#define RCC_CR_HSERDY (1 << 17) +#define RCC_CR_HSEBYP (1 << 18) +#define RCC_CR_CSSON (1 << 19) +#define RCC_CR_PLLON (1 << 24) +#define RCC_CR_PLLRDY (1 << 25) + +#define RCC_CFGR_PLLMUL_MASK 0x3C0000 +#define RCC_CFGR_PLLMUL_SHIFT 18 +#define RCC_CFGR_PLLSRC_HSE (1 << 16) + +#define RCC_CFGR_AHB_PSC_MASK 0xF0 +#define RCC_CFGR_APB1_PSC_MASK 0x700 +#define RCC_CFGR_APB2_PSC_MASK 0x3800 +#define RCC_CFGR_SW0 (1 << 0) +#define RCC_CFGR_SW1 (1 << 1) +#define RCC_CFGR_SW_MASK 0x3 +#define RCC_CFGR_SW_HSI 0 +#define RCC_CFGR_SW_HSE RCC_CFGR_SW0 +#define RCC_CFGR_SW_PLL RCC_CFGR_SW1 +#define RCC_CFGR_SWS0 (1 << 2) +#define RCC_CFGR_SWS1 (1 << 3) +#define RCC_CFGR_SWS_MASK 0xC +#define RCC_CFGR_SWS_HSI 0 +#define RCC_CFGR_SWS_HSE RCC_CFGR_SWS0 +#define RCC_CFGR_SWS_PLL RCC_CFGR_SWS1 +#define RCC_CFGR_HPRE_SHIFT 4 +#define RCC_CFGR_PPRE1_SHIFT 8 +#define RCC_CFGR_PPRE2_SHIFT 11 + +#define RCC_APB1ENR_PWREN (1 << 28) + +#define PWR_CR_VOS0 (1 << 14) +#define PWR_CR_VOS1 (1 << 15) +#define PWR_CR_VOS_MASK 0xC000 +#define PWR_CR_VOS_SCALE_MODE_1 (PWR_CR_VOS0 | PWR_CR_VOS1) +#define PWR_CR_VOS_SCALE_MODE_2 (PWR_CR_VOS1) +#define PWR_CR_VOS_SCALE_MODE_3 (PWR_CR_VOS0) + +#define FLASH_ACR_WS(n) n +#define FLASH_ACR_PRFTEN (1 << 8) +#define FLASH_ACR_ICEN (1 << 9) +#define FLASH_ACR_DCEN (1 << 10) + +struct psc { + u8 ahb_psc; + u8 apb1_psc; + u8 apb2_psc; +}; + +#define AHB_PSC_1 0 +#define AHB_PSC_2 0x8 +#define AHB_PSC_4 0x9 +#define AHB_PSC_8 0xA +#define AHB_PSC_16 0xB +#define AHB_PSC_64 0xC +#define AHB_PSC_128 0xD +#define AHB_PSC_256 0xE +#define AHB_PSC_512 0xF + +#define APB_PSC_1 0 +#define APB_PSC_2 0x4 +#define APB_PSC_4 0x5 +#define APB_PSC_8 0x6 +#define APB_PSC_16 0x7 + +#if !defined(CONFIG_STM32_HSE_HZ) +#error "CONFIG_STM32_HSE_HZ not defined!" +#else +#if (CONFIG_STM32_HSE_HZ == 8000000) +#define RCC_CFGR_PLLMUL_CFG 0x7 +struct psc psc_hse = { + .ahb_psc = AHB_PSC_1, + .apb1_psc = APB_PSC_2, + .apb2_psc = APB_PSC_1 +}; +#else +#error "No PLL/Prescaler configuration for given CONFIG_STM32_HSE_HZ exists" +#endif +#endif + +int configure_clocks(void) +{ + /* Reset RCC configuration */ + setbits_le32(&STM32_RCC->cr, RCC_CR_HSION); + writel(0, &STM32_RCC->cfgr); /* Reset CFGR */ + clrbits_le32(&STM32_RCC->cr, (RCC_CR_HSEON | RCC_CR_CSSON + | RCC_CR_PLLON)); + clrbits_le32(&STM32_RCC->cr, RCC_CR_HSEBYP); + writel(0, &STM32_RCC->cir); /* Disable all interrupts */ + + /* Configure for HSE+PLL operation */ + setbits_le32(&STM32_RCC->cr, RCC_CR_HSEON); + while (!(readl(&STM32_RCC->cr) & RCC_CR_HSERDY)) + ; + + /* Enable high performance mode, System frequency up to 168 MHz */ + setbits_le32(&STM32_RCC->apb1enr, RCC_APB1ENR_PWREN); + writel(PWR_CR_VOS_SCALE_MODE_1, &STM32_PWR->cr); + + setbits_le32(&STM32_RCC->cfgr, + RCC_CFGR_PLLMUL_CFG << RCC_CFGR_PLLMUL_SHIFT); + setbits_le32(&STM32_RCC->cfgr, RCC_CFGR_PLLSRC_HSE); + setbits_le32(&STM32_RCC->cfgr, (( + psc_hse.ahb_psc << RCC_CFGR_HPRE_SHIFT) + | (psc_hse.apb1_psc << RCC_CFGR_PPRE1_SHIFT) + | (psc_hse.apb2_psc << RCC_CFGR_PPRE2_SHIFT))); + + setbits_le32(&STM32_RCC->cr, RCC_CR_PLLON); + + while (!(readl(&STM32_RCC->cr) & RCC_CR_PLLRDY)) + ; + + /* 5 wait states, Prefetch enabled, D-Cache enabled, I-Cache enabled */ + writel(FLASH_ACR_WS(5) | FLASH_ACR_PRFTEN | FLASH_ACR_ICEN + | FLASH_ACR_DCEN, &STM32_FLASH->acr); + + clrbits_le32(&STM32_RCC->cfgr, (RCC_CFGR_SW0 | RCC_CFGR_SW1)); + setbits_le32(&STM32_RCC->cfgr, RCC_CFGR_SW_PLL); + + while ((readl(&STM32_RCC->cfgr) & RCC_CFGR_SWS_MASK) != + RCC_CFGR_SWS_PLL) + ; + + return 0; +} + +unsigned long clock_get(enum clock clck) +{ + u32 sysclk = 0; + u32 shift = 0; + /* PLL table lookups for clock computation */ + u8 pll_mul_table[16] = { + 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16 + }; + /* Prescaler table lookups for clock computation */ + u8 ahb_psc_table[16] = { + 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9 + }; + u8 apb_psc_table[8] = { + 0, 0, 0, 0, 1, 2, 3, 4 + }; + + if ((readl(&STM32_RCC->cfgr) & RCC_CFGR_SWS_MASK) == + RCC_CFGR_SWS_PLL) { + u16 pll; + pll = ((readl(&STM32_RCC->cfgr) & RCC_CFGR_PLLMUL_MASK) + >> RCC_CFGR_PLLMUL_SHIFT); + sysclk = CONFIG_STM32_HSE_HZ * pll_mul_table[pll]; + } + + switch (clck) { + case CLOCK_CORE: + return sysclk; + break; + case CLOCK_AHB: + shift = ahb_psc_table[( + (readl(&STM32_RCC->cfgr) & RCC_CFGR_AHB_PSC_MASK) + >> RCC_CFGR_HPRE_SHIFT)]; + return sysclk >>= shift; + break; + case CLOCK_APB1: + shift = apb_psc_table[( + (readl(&STM32_RCC->cfgr) & RCC_CFGR_APB1_PSC_MASK) + >> RCC_CFGR_PPRE1_SHIFT)]; + return sysclk >>= shift; + break; + case CLOCK_APB2: + shift = apb_psc_table[( + (readl(&STM32_RCC->cfgr) & RCC_CFGR_APB2_PSC_MASK) + >> RCC_CFGR_PPRE2_SHIFT)]; + return sysclk >>= shift; + break; + default: + return 0; + break; + } +} diff --git a/arch/arm/mach-stm32/stm32f1/flash.c b/arch/arm/mach-stm32/stm32f1/flash.c new file mode 100644 index 0000000..7d41f63 --- /dev/null +++ b/arch/arm/mach-stm32/stm32f1/flash.c @@ -0,0 +1,180 @@ +/* + * (C) Copyright 2015 + * Kamil Lulko, + * + * Copyright 2015 ATS Advanced Telematics Systems GmbH + * Copyright 2015 Konsulko Group, Matt Porter + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#define STM32_FLASH_KEY1 0x45670123 +#define STM32_FLASH_KEY2 0xcdef89ab + +#define STM32_NUM_BANKS 2 +#define STM32_MAX_BANK 0x200 + +flash_info_t flash_info[STM32_NUM_BANKS]; +static struct stm32_flash_bank_regs *flash_bank[STM32_NUM_BANKS]; + +static void stm32f1_flash_lock(u8 bank, u8 lock) +{ + if (lock) { + setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_LOCK); + } else { + writel(STM32_FLASH_KEY1, &flash_bank[bank]->keyr); + writel(STM32_FLASH_KEY2, &flash_bank[bank]->keyr); + } +} + +/* Only XL devices are supported (2 KiB sector size) */ +unsigned long flash_init(void) +{ + u8 i, banks; + u16 j, size; + + /* Set up accessors for XL devices with wonky register layout */ + flash_bank[0] = (struct stm32_flash_bank_regs *)&STM32_FLASH->keyr; + flash_bank[1] = (struct stm32_flash_bank_regs *)&STM32_FLASH->keyr2; + + /* + * Get total flash size (in KiB) and configure number of banks + * present and sector count per bank. + */ + size = readw(&STM32_DES->flash_size); + if (size <= STM32_MAX_BANK) { + banks = 1; + flash_info[0].sector_count = size >> 1; + } else if (size > STM32_MAX_BANK) { + banks = 2; + flash_info[0].sector_count = STM32_MAX_BANK >> 1; + flash_info[1].sector_count = (size - STM32_MAX_BANK) >> 1; + } + + /* Configure start/size for all sectors */ + for (i = 0; i < banks; i++) { + flash_info[i].flash_id = FLASH_STM32F1; + flash_info[i].start[0] = CONFIG_SYS_FLASH_BASE + (i << 19); + flash_info[i].size = 2048; + for (j = 1; (j < flash_info[i].sector_count); j++) { + flash_info[i].start[j] = flash_info[i].start[j - 1] + + 2048; + flash_info[i].size += 2048; + } + } + + return size << 10; +} + +void flash_print_info(flash_info_t *info) +{ + int i; + + if (info->flash_id == FLASH_UNKNOWN) { + printf("Missing or unknown FLASH type\n"); + return; + } else if (info->flash_id == FLASH_STM32F1) { + printf("STM32F1 Embedded Flash\n"); + } + + printf(" Size: %ld MB in %d Sectors\n", + info->size >> 10, info->sector_count); + + printf(" Sector Start Addresses:"); + for (i = 0; i < info->sector_count; ++i) { + if ((i % 5) == 0) + printf("\n "); + printf(" %08lX%s", + info->start[i], + info->protect[i] ? " (RO)" : " "); + } + printf("\n"); + return; +} + +int flash_erase(flash_info_t *info, int first, int last) +{ + u8 bank = 0xff; + int i; + + for (i = 0; i < STM32_NUM_BANKS; i++) { + if (info == &flash_info[i]) { + bank = i; + break; + } + } + if (bank == 0xff) + return -1; + + stm32f1_flash_lock(bank, 0); + + for (i = first; i <= last; i++) { + while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY) + ; + + setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PER); + + writel(info->start[i], &flash_bank[bank]->ar); + + setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_STRT); + + while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY) + ; + } + + clrbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PER); + + stm32f1_flash_lock(bank, 1); + + return 0; +} + +int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) +{ + ulong i; + u8 bank = 0xff; + + if (addr & 1) { + printf("Flash address must be half word aligned\n"); + return -1; + } + + if (cnt & 1) { + printf("Flash length must be half word aligned\n"); + return -1; + } + + for (i = 0; i < 2; i++) { + if (info == &flash_info[i]) { + bank = i; + break; + } + } + + if (bank == 0xff) + return -1; + + while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY) + ; + + stm32f1_flash_lock(bank, 0); + + setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PG); + + /* STM32F1 requires half word writes */ + for (i = 0; i < cnt >> 1; i++) { + *(u16 *)(addr + i * 2) = ((u16 *)src)[i]; + while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY) + ; + } + + clrbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PG); + + stm32f1_flash_lock(bank, 1); + + return 0; +} diff --git a/arch/arm/mach-stm32/stm32f1/soc.c b/arch/arm/mach-stm32/stm32f1/soc.c new file mode 100644 index 0000000..4438621 --- /dev/null +++ b/arch/arm/mach-stm32/stm32f1/soc.c @@ -0,0 +1,36 @@ +/* + * (C) Copyright 2015 + * Kamil Lulko, + * + * Copyright 2015 ATS Advanced Telematics Systems GmbH + * Copyright 2015 Konsulko Group, Matt Porter + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +u32 get_cpu_rev(void) +{ + return 0; +} + +int arch_cpu_init(void) +{ + configure_clocks(); + + /* + * Configure the memory protection unit (MPU) to allow full access to + * the whole 4GB address space. + */ + writel(0, &V7M_MPU->rnr); + writel(0, &V7M_MPU->rbar); + writel((V7M_MPU_RASR_AP_RW_RW | V7M_MPU_RASR_SIZE_4GB + | V7M_MPU_RASR_EN), &V7M_MPU->rasr); + writel(V7M_MPU_CTRL_ENABLE | V7M_MPU_CTRL_HFNMIENA, &V7M_MPU->ctrl); + + return 0; +} diff --git a/arch/arm/mach-stm32/stm32f1/timer.c b/arch/arm/mach-stm32/stm32f1/timer.c new file mode 100644 index 0000000..6a26198 --- /dev/null +++ b/arch/arm/mach-stm32/stm32f1/timer.c @@ -0,0 +1,121 @@ +/* + * (C) Copyright 2015 + * Kamil Lulko, + * + * Copyright 2015 ATS Advanced Telematics Systems GmbH + * Copyright 2015 Konsulko Group, Matt Porter + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#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); + + if (clock_get(CLOCK_AHB) == clock_get(CLOCK_APB1)) + writel((clock_get(CLOCK_APB1) / CONFIG_SYS_HZ_CLOCK) - 1, + &tim->psc); + else + writel(((clock_get(CLOCK_APB1) * 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/stm32f4/Kconfig b/arch/arm/mach-stm32/stm32f4/Kconfig new file mode 100644 index 0000000..a63619e --- /dev/null +++ b/arch/arm/mach-stm32/stm32f4/Kconfig @@ -0,0 +1,8 @@ +if STM32F4 + +config TARGET_STM32F429_DISCOVERY + bool "STM32F429 Discovery board" + +source "board/st/stm32f429-discovery/Kconfig" + +endif diff --git a/arch/arm/mach-stm32/stm32f4/Makefile b/arch/arm/mach-stm32/stm32f4/Makefile new file mode 100644 index 0000000..42d01db --- /dev/null +++ b/arch/arm/mach-stm32/stm32f4/Makefile @@ -0,0 +1,11 @@ +# +# (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 += soc.o clock.o timer.o flash.o diff --git a/arch/arm/mach-stm32/stm32f4/clock.c b/arch/arm/mach-stm32/stm32f4/clock.c new file mode 100644 index 0000000..3deb17a --- /dev/null +++ b/arch/arm/mach-stm32/stm32f4/clock.c @@ -0,0 +1,223 @@ +/* + * (C) Copyright 2015 + * Kamil Lulko, + * + * (C) Copyright 2014 + * STMicroelectronics + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#define RCC_CR_HSION (1 << 0) +#define RCC_CR_HSEON (1 << 16) +#define RCC_CR_HSERDY (1 << 17) +#define RCC_CR_HSEBYP (1 << 18) +#define RCC_CR_CSSON (1 << 19) +#define RCC_CR_PLLON (1 << 24) +#define RCC_CR_PLLRDY (1 << 25) + +#define RCC_PLLCFGR_PLLM_MASK 0x3F +#define RCC_PLLCFGR_PLLN_MASK 0x7FC0 +#define RCC_PLLCFGR_PLLP_MASK 0x30000 +#define RCC_PLLCFGR_PLLQ_MASK 0xF000000 +#define RCC_PLLCFGR_PLLSRC (1 << 22) +#define RCC_PLLCFGR_PLLN_SHIFT 6 +#define RCC_PLLCFGR_PLLP_SHIFT 16 +#define RCC_PLLCFGR_PLLQ_SHIFT 24 + +#define RCC_CFGR_AHB_PSC_MASK 0xF0 +#define RCC_CFGR_APB1_PSC_MASK 0x1C00 +#define RCC_CFGR_APB2_PSC_MASK 0xE000 +#define RCC_CFGR_SW0 (1 << 0) +#define RCC_CFGR_SW1 (1 << 1) +#define RCC_CFGR_SW_MASK 0x3 +#define RCC_CFGR_SW_HSI 0 +#define RCC_CFGR_SW_HSE RCC_CFGR_SW0 +#define RCC_CFGR_SW_PLL RCC_CFGR_SW1 +#define RCC_CFGR_SWS0 (1 << 2) +#define RCC_CFGR_SWS1 (1 << 3) +#define RCC_CFGR_SWS_MASK 0xC +#define RCC_CFGR_SWS_HSI 0 +#define RCC_CFGR_SWS_HSE RCC_CFGR_SWS0 +#define RCC_CFGR_SWS_PLL RCC_CFGR_SWS1 +#define RCC_CFGR_HPRE_SHIFT 4 +#define RCC_CFGR_PPRE1_SHIFT 10 +#define RCC_CFGR_PPRE2_SHIFT 13 + +#define RCC_APB1ENR_PWREN (1 << 28) + +#define PWR_CR_VOS0 (1 << 14) +#define PWR_CR_VOS1 (1 << 15) +#define PWR_CR_VOS_MASK 0xC000 +#define PWR_CR_VOS_SCALE_MODE_1 (PWR_CR_VOS0 | PWR_CR_VOS1) +#define PWR_CR_VOS_SCALE_MODE_2 (PWR_CR_VOS1) +#define PWR_CR_VOS_SCALE_MODE_3 (PWR_CR_VOS0) + +#define FLASH_ACR_WS(n) n +#define FLASH_ACR_PRFTEN (1 << 8) +#define FLASH_ACR_ICEN (1 << 9) +#define FLASH_ACR_DCEN (1 << 10) + +struct pll_psc { + u8 pll_m; + u16 pll_n; + u8 pll_p; + u8 pll_q; + u8 ahb_psc; + u8 apb1_psc; + u8 apb2_psc; +}; + +#define AHB_PSC_1 0 +#define AHB_PSC_2 0x8 +#define AHB_PSC_4 0x9 +#define AHB_PSC_8 0xA +#define AHB_PSC_16 0xB +#define AHB_PSC_64 0xC +#define AHB_PSC_128 0xD +#define AHB_PSC_256 0xE +#define AHB_PSC_512 0xF + +#define APB_PSC_1 0 +#define APB_PSC_2 0x4 +#define APB_PSC_4 0x5 +#define APB_PSC_8 0x6 +#define APB_PSC_16 0x7 + +#if !defined(CONFIG_STM32_HSE_HZ) +#error "CONFIG_STM32_HSE_HZ not defined!" +#else +#if (CONFIG_STM32_HSE_HZ == 8000000) +#if (CONFIG_SYS_CLK_FREQ == 180000000) +/* 180 MHz */ +struct pll_psc sys_pll_psc = { + .pll_m = 8, + .pll_n = 360, + .pll_p = 2, + .pll_q = 8, + .ahb_psc = AHB_PSC_1, + .apb1_psc = APB_PSC_4, + .apb2_psc = APB_PSC_2 +}; +#else +/* default 168 MHz */ +struct pll_psc sys_pll_psc = { + .pll_m = 8, + .pll_n = 336, + .pll_p = 2, + .pll_q = 7, + .ahb_psc = AHB_PSC_1, + .apb1_psc = APB_PSC_4, + .apb2_psc = APB_PSC_2 +}; +#endif +#else +#error "No PLL/Prescaler configuration for given CONFIG_STM32_HSE_HZ exists" +#endif +#endif + +int configure_clocks(void) +{ + /* Reset RCC configuration */ + setbits_le32(&STM32_RCC->cr, RCC_CR_HSION); + writel(0, &STM32_RCC->cfgr); /* Reset CFGR */ + clrbits_le32(&STM32_RCC->cr, (RCC_CR_HSEON | RCC_CR_CSSON + | RCC_CR_PLLON)); + writel(0x24003010, &STM32_RCC->pllcfgr); /* Reset value from RM */ + clrbits_le32(&STM32_RCC->cr, RCC_CR_HSEBYP); + writel(0, &STM32_RCC->cir); /* Disable all interrupts */ + + /* Configure for HSE+PLL operation */ + setbits_le32(&STM32_RCC->cr, RCC_CR_HSEON); + while (!(readl(&STM32_RCC->cr) & RCC_CR_HSERDY)) + ; + + /* Enable high performance mode, System frequency up to 180 MHz */ + setbits_le32(&STM32_RCC->apb1enr, RCC_APB1ENR_PWREN); + writel(PWR_CR_VOS_SCALE_MODE_1, &STM32_PWR->cr); + + setbits_le32(&STM32_RCC->cfgr, (( + sys_pll_psc.ahb_psc << RCC_CFGR_HPRE_SHIFT) + | (sys_pll_psc.apb1_psc << RCC_CFGR_PPRE1_SHIFT) + | (sys_pll_psc.apb2_psc << RCC_CFGR_PPRE2_SHIFT))); + + writel(sys_pll_psc.pll_m + | (sys_pll_psc.pll_n << RCC_PLLCFGR_PLLN_SHIFT) + | (((sys_pll_psc.pll_p >> 1) - 1) << RCC_PLLCFGR_PLLP_SHIFT) + | (sys_pll_psc.pll_q << RCC_PLLCFGR_PLLQ_SHIFT), + &STM32_RCC->pllcfgr); + setbits_le32(&STM32_RCC->pllcfgr, RCC_PLLCFGR_PLLSRC); + + setbits_le32(&STM32_RCC->cr, RCC_CR_PLLON); + + while (!(readl(&STM32_RCC->cr) & RCC_CR_PLLRDY)) + ; + + /* 5 wait states, Prefetch enabled, D-Cache enabled, I-Cache enabled */ + writel(FLASH_ACR_WS(5) | FLASH_ACR_PRFTEN | FLASH_ACR_ICEN + | FLASH_ACR_DCEN, &STM32_FLASH->acr); + + clrbits_le32(&STM32_RCC->cfgr, (RCC_CFGR_SW0 | RCC_CFGR_SW1)); + setbits_le32(&STM32_RCC->cfgr, RCC_CFGR_SW_PLL); + + while ((readl(&STM32_RCC->cfgr) & RCC_CFGR_SWS_MASK) != + RCC_CFGR_SWS_PLL) + ; + + return 0; +} + +unsigned long clock_get(enum clock clck) +{ + u32 sysclk = 0; + u32 shift = 0; + /* Prescaler table lookups for clock computation */ + u8 ahb_psc_table[16] = { + 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9 + }; + u8 apb_psc_table[8] = { + 0, 0, 0, 0, 1, 2, 3, 4 + }; + + if ((readl(&STM32_RCC->cfgr) & RCC_CFGR_SWS_MASK) == + RCC_CFGR_SWS_PLL) { + u16 pllm, plln, pllp; + pllm = (readl(&STM32_RCC->pllcfgr) & RCC_PLLCFGR_PLLM_MASK); + plln = ((readl(&STM32_RCC->pllcfgr) & RCC_PLLCFGR_PLLN_MASK) + >> RCC_PLLCFGR_PLLN_SHIFT); + pllp = ((((readl(&STM32_RCC->pllcfgr) & RCC_PLLCFGR_PLLP_MASK) + >> RCC_PLLCFGR_PLLP_SHIFT) + 1) << 1); + sysclk = ((CONFIG_STM32_HSE_HZ / pllm) * plln) / pllp; + } + + switch (clck) { + case CLOCK_CORE: + return sysclk; + break; + case CLOCK_AHB: + shift = ahb_psc_table[( + (readl(&STM32_RCC->cfgr) & RCC_CFGR_AHB_PSC_MASK) + >> RCC_CFGR_HPRE_SHIFT)]; + return sysclk >>= shift; + break; + case CLOCK_APB1: + shift = apb_psc_table[( + (readl(&STM32_RCC->cfgr) & RCC_CFGR_APB1_PSC_MASK) + >> RCC_CFGR_PPRE1_SHIFT)]; + return sysclk >>= shift; + break; + case CLOCK_APB2: + shift = apb_psc_table[( + (readl(&STM32_RCC->cfgr) & RCC_CFGR_APB2_PSC_MASK) + >> RCC_CFGR_PPRE2_SHIFT)]; + return sysclk >>= shift; + break; + default: + return 0; + break; + } +} diff --git a/arch/arm/mach-stm32/stm32f4/flash.c b/arch/arm/mach-stm32/stm32f4/flash.c new file mode 100644 index 0000000..a379f47 --- /dev/null +++ b/arch/arm/mach-stm32/stm32f4/flash.c @@ -0,0 +1,146 @@ +/* + * (C) Copyright 2015 + * Kamil Lulko, + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#define STM32_FLASH_KEY1 0x45670123 +#define STM32_FLASH_KEY2 0xCDEF89AB + +flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; + +const u32 sect_sz_kb[CONFIG_SYS_MAX_FLASH_SECT] = { + [0 ... 3] = 16 * 1024, + [4] = 64 * 1024, + [5 ... 11] = 128 * 1024 +}; + +static void stm32f4_flash_lock(u8 lock) +{ + if (lock) { + setbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_LOCK); + } else { + writel(STM32_FLASH_KEY1, &STM32_FLASH->key); + writel(STM32_FLASH_KEY2, &STM32_FLASH->key); + } +} + +unsigned long flash_init(void) +{ + unsigned long total_size = 0; + u8 i, j; + + for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { + flash_info[i].flash_id = FLASH_STM32F4; + flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT; + flash_info[i].start[0] = CONFIG_SYS_FLASH_BASE + (i << 20); + flash_info[i].size = sect_sz_kb[0]; + for (j = 1; j < CONFIG_SYS_MAX_FLASH_SECT; j++) { + flash_info[i].start[j] = flash_info[i].start[j - 1] + + (sect_sz_kb[j - 1]); + flash_info[i].size += sect_sz_kb[j]; + } + total_size += flash_info[i].size; + } + + return total_size; +} + +void flash_print_info(flash_info_t *info) +{ + int i; + + if (info->flash_id == FLASH_UNKNOWN) { + printf("missing or unknown FLASH type\n"); + return; + } else if (info->flash_id == FLASH_STM32F4) { + printf("STM32F4 Embedded Flash\n"); + } + + printf(" Size: %ld MB in %d Sectors\n", + info->size >> 20, info->sector_count); + + printf(" Sector Start Addresses:"); + for (i = 0; i < info->sector_count; ++i) { + if ((i % 5) == 0) + printf("\n "); + printf(" %08lX%s", + info->start[i], + info->protect[i] ? " (RO)" : " "); + } + printf("\n"); + return; +} + +int flash_erase(flash_info_t *info, int first, int last) +{ + u8 bank = 0xFF; + int i; + + for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { + if (info == &flash_info[i]) { + bank = i; + break; + } + } + if (bank == 0xFF) + return -1; + + stm32f4_flash_lock(0); + + for (i = first; i <= last; i++) { + while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) + ; + + /* clear old sector number before writing a new one */ + clrbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_SNB_MASK); + + if (bank == 0) { + setbits_le32(&STM32_FLASH->cr, + (i << STM32_FLASH_CR_SNB_OFFSET)); + } else if (bank == 1) { + setbits_le32(&STM32_FLASH->cr, + ((0x10 | i) << STM32_FLASH_CR_SNB_OFFSET)); + } else { + stm32f4_flash_lock(1); + return -1; + } + setbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_SER); + setbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_STRT); + + while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) + ; + + clrbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_SER); + } + + stm32f4_flash_lock(1); + return 0; +} + +int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) +{ + ulong i; + + while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) + ; + + stm32f4_flash_lock(0); + + setbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_PG); + /* To make things simple use byte writes only */ + for (i = 0; i < cnt; i++) { + *(uchar *)(addr + i) = src[i]; + while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) + ; + } + clrbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_PG); + stm32f4_flash_lock(1); + + return 0; +} diff --git a/arch/arm/mach-stm32/stm32f4/soc.c b/arch/arm/mach-stm32/stm32f4/soc.c new file mode 100644 index 0000000..b5d06db --- /dev/null +++ b/arch/arm/mach-stm32/stm32f4/soc.c @@ -0,0 +1,37 @@ +/* + * (C) Copyright 2015 + * Kamil Lulko, + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +u32 get_cpu_rev(void) +{ + return 0; +} + +int arch_cpu_init(void) +{ + configure_clocks(); + + /* + * Configure the memory protection unit (MPU) to allow full access to + * the whole 4GB address space. + */ + writel(0, &V7M_MPU->rnr); + writel(0, &V7M_MPU->rbar); + writel((V7M_MPU_RASR_AP_RW_RW | V7M_MPU_RASR_SIZE_4GB + | V7M_MPU_RASR_EN), &V7M_MPU->rasr); + writel(V7M_MPU_CTRL_ENABLE | V7M_MPU_CTRL_HFNMIENA, &V7M_MPU->ctrl); + + return 0; +} + +void s_init(void) +{ +} diff --git a/arch/arm/mach-stm32/stm32f4/timer.c b/arch/arm/mach-stm32/stm32f4/timer.c new file mode 100644 index 0000000..1dee190 --- /dev/null +++ b/arch/arm/mach-stm32/stm32f4/timer.c @@ -0,0 +1,118 @@ +/* + * (C) Copyright 2015 + * Kamil Lulko, + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#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); + + if (clock_get(CLOCK_AHB) == clock_get(CLOCK_APB1)) + writel((clock_get(CLOCK_APB1) / CONFIG_SYS_HZ_CLOCK) - 1, + &tim->psc); + else + writel(((clock_get(CLOCK_APB1) * 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/configs/stm32f429-discovery_defconfig b/configs/stm32f429-discovery_defconfig index 7512457..fb330e2 100644 --- a/configs/stm32f429-discovery_defconfig +++ b/configs/stm32f429-discovery_defconfig @@ -1,4 +1,6 @@ CONFIG_ARM=y +CONFIG_STM32=y +CONFIG_STM32F4=y CONFIG_TARGET_STM32F429_DISCOVERY=y CONFIG_SYS_PROMPT="U-Boot > " # CONFIG_CMD_SETEXPR is not set diff --git a/include/configs/stm32f429-discovery.h b/include/configs/stm32f429-discovery.h index 3e80861..85d492d 100644 --- a/include/configs/stm32f429-discovery.h +++ b/include/configs/stm32f429-discovery.h @@ -8,7 +8,6 @@ #ifndef __CONFIG_H #define __CONFIG_H -#define CONFIG_STM32F4 #define CONFIG_SYS_THUMB_BUILD #define CONFIG_STM32F4DISCOVERY -- cgit v0.10.2