From c729fb258a49943a1a63b3b466f5db02fab6c336 Mon Sep 17 00:00:00 2001 From: Patrice Chotard Date: Thu, 16 Nov 2017 08:59:21 +0100 Subject: [PATCH] mach-stm32: Factorize MPU's region config for STM32 SoCs MPU's region setup can be factorized between STM32F4/F7/H7 SoCs family and used a common MPU's region config. Only one exception for STM32H7 which doesn't have device area located at 0xA000 0000. For STM32F4, configure_clocks() need to be moved from arch_cpu_init() to board_early_init_f(). Signed-off-by: Patrice Chotard Reviewed-by: Vikas Manocha --- arch/arm/mach-stm32/Makefile | 3 +- arch/arm/mach-stm32/{stm32h7 => }/soc.c | 25 +++++----- arch/arm/mach-stm32/stm32f4/Makefile | 2 +- arch/arm/mach-stm32/stm32f4/soc.c | 41 ---------------- arch/arm/mach-stm32/stm32f7/Makefile | 2 +- arch/arm/mach-stm32/stm32f7/soc.c | 49 ------------------- arch/arm/mach-stm32/stm32h7/Makefile | 8 --- .../stm32f429-discovery/stm32f429-discovery.c | 2 + 8 files changed, 16 insertions(+), 116 deletions(-) rename arch/arm/mach-stm32/{stm32h7 => }/soc.c (75%) delete mode 100644 arch/arm/mach-stm32/stm32f4/soc.c delete mode 100644 arch/arm/mach-stm32/stm32f7/soc.c delete mode 100644 arch/arm/mach-stm32/stm32h7/Makefile diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile index 0f5ac37168..c2806af69b 100644 --- a/arch/arm/mach-stm32/Makefile +++ b/arch/arm/mach-stm32/Makefile @@ -4,7 +4,6 @@ # # SPDX-License-Identifier: GPL-2.0+ # - +obj-y += soc.o obj-$(CONFIG_STM32F4) += stm32f4/ obj-$(CONFIG_STM32F7) += stm32f7/ -obj-$(CONFIG_STM32H7) += stm32h7/ diff --git a/arch/arm/mach-stm32/stm32h7/soc.c b/arch/arm/mach-stm32/soc.c similarity index 75% rename from arch/arm/mach-stm32/stm32h7/soc.c rename to arch/arm/mach-stm32/soc.c index 692dbcc04a..df20d547c5 100644 --- a/arch/arm/mach-stm32/stm32h7/soc.c +++ b/arch/arm/mach-stm32/soc.c @@ -9,11 +9,6 @@ #include #include -u32 get_cpu_rev(void) -{ - return 0; -} - int arch_cpu_init(void) { int i; @@ -30,11 +25,11 @@ int arch_cpu_init(void) { 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW, O_I_WB_RD_WR_ALLOC, REGION_4GB }, - /* Code area, executable & strongly ordered */ - { 0xD0000000, REGION_1, XN_EN, PRIV_RW_USR_RW, - STRONG_ORDER, REGION_8MB }, + /* armv7m code area */ + { 0x00000000, REGION_1, XN_DIS, PRIV_RW_USR_RW, + STRONG_ORDER, REGION_512MB }, - /* Device area in all H7 : Not executable */ + /* Device area : Not executable */ { 0x40000000, REGION_2, XN_EN, PRIV_RW_USR_RW, DEVICE_NON_SHARED, REGION_512MB }, @@ -42,8 +37,14 @@ int arch_cpu_init(void) * Armv7m fixed configuration: strongly ordered & not * executable, not cacheable */ - { 0xE0000000, REGION_4, XN_EN, PRIV_RW_USR_RW, + { 0xE0000000, REGION_3, XN_EN, PRIV_RW_USR_RW, STRONG_ORDER, REGION_512MB }, + +#if !defined(CONFIG_STM32H7) + /* Device area : Not executable */ + { 0xA0000000, REGION_4, XN_EN, PRIV_RW_USR_RW, + DEVICE_NON_SHARED, REGION_512MB }, +#endif }; disable_mpu(); @@ -53,7 +54,3 @@ int arch_cpu_init(void) return 0; } - -void s_init(void) -{ -} diff --git a/arch/arm/mach-stm32/stm32f4/Makefile b/arch/arm/mach-stm32/stm32f4/Makefile index 020e78370c..63db820030 100644 --- a/arch/arm/mach-stm32/stm32f4/Makefile +++ b/arch/arm/mach-stm32/stm32f4/Makefile @@ -8,4 +8,4 @@ # SPDX-License-Identifier: GPL-2.0+ # -obj-y += soc.o clock.o timer.o +obj-y += clock.o timer.o diff --git a/arch/arm/mach-stm32/stm32f4/soc.c b/arch/arm/mach-stm32/stm32f4/soc.c deleted file mode 100644 index 9eb655a681..0000000000 --- a/arch/arm/mach-stm32/stm32f4/soc.c +++ /dev/null @@ -1,41 +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) -{ - struct mpu_region_config stm32_region_config[] = { - { 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW, - STRONG_ORDER, REGION_4GB }, - }; - int i; - - configure_clocks(); - /* - * Configure the memory protection unit (MPU) to allow full access to - * the whole 4GB address space. - */ - disable_mpu(); - for (i = 0; i < ARRAY_SIZE(stm32_region_config); i++) - mpu_config(&stm32_region_config[i]); - enable_mpu(); - - return 0; -} - -void s_init(void) -{ -} diff --git a/arch/arm/mach-stm32/stm32f7/Makefile b/arch/arm/mach-stm32/stm32f7/Makefile index 6696b267fe..8132c13234 100644 --- a/arch/arm/mach-stm32/stm32f7/Makefile +++ b/arch/arm/mach-stm32/stm32f7/Makefile @@ -5,4 +5,4 @@ # SPDX-License-Identifier: GPL-2.0+ # -obj-y += timer.o soc.o +obj-y += timer.o diff --git a/arch/arm/mach-stm32/stm32f7/soc.c b/arch/arm/mach-stm32/stm32f7/soc.c deleted file mode 100644 index a960cc1cbf..0000000000 --- a/arch/arm/mach-stm32/stm32f7/soc.c +++ /dev/null @@ -1,49 +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) -{ - int i; - - struct mpu_region_config stm32_region_config[] = { - { 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW, - O_I_WB_RD_WR_ALLOC, REGION_4GB }, - - { 0x00000000, REGION_1, XN_DIS, PRIV_RW_USR_RW, - STRONG_ORDER, REGION_512MB }, - - { 0x40000000, REGION_2, XN_EN, PRIV_RW_USR_RW, - DEVICE_NON_SHARED, REGION_512MB }, - - { 0xA0000000, REGION_3, XN_EN, PRIV_RW_USR_RW, - DEVICE_NON_SHARED, REGION_512MB }, - - { 0xE0000000, REGION_4, XN_EN, PRIV_RW_USR_RW, - STRONG_ORDER, REGION_512MB }, - }; - - disable_mpu(); - for (i = 0; i < ARRAY_SIZE(stm32_region_config); i++) - mpu_config(&stm32_region_config[i]); - enable_mpu(); - - return 0; -} - -void s_init(void) -{ -} diff --git a/arch/arm/mach-stm32/stm32h7/Makefile b/arch/arm/mach-stm32/stm32h7/Makefile deleted file mode 100644 index cba2e3be1c..0000000000 --- a/arch/arm/mach-stm32/stm32h7/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# -# Copyright (C) 2017, STMicroelectronics - All Rights Reserved -# Author(s): Patrice CHOTARD, for STMicroelectronics. -# -# SPDX-License-Identifier: GPL-2.0+ -# - -obj-y += soc.o diff --git a/board/st/stm32f429-discovery/stm32f429-discovery.c b/board/st/stm32f429-discovery/stm32f429-discovery.c index 6f19a0563d..1c34a8efe1 100644 --- a/board/st/stm32f429-discovery/stm32f429-discovery.c +++ b/board/st/stm32f429-discovery/stm32f429-discovery.c @@ -294,6 +294,8 @@ int board_early_init_f(void) { int res; + configure_clocks(); + res = uart_setup_gpio(); if (res) return res; -- 2.39.5