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u-boot/arch/arm/mach-stm32/soc.c

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0+
board: Add stm32h7 SoC, discovery and evaluation boards support This patch adds support for stm32h7 soc family, stm32h743 discovery and evaluation boards. For more information about STM32H7 series, please visit: http://www.st.com/en/microcontrollers/stm32h7-series.html Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-13 16:00:12 +00:00
/*
stm32: fix STMicroelectronics copyright Uniformize STMicroelectronics copyrights headers for STM32 related code. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-10-23 07:53:58 +00:00
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
* Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics.
board: Add stm32h7 SoC, discovery and evaluation boards support This patch adds support for stm32h7 soc family, stm32h743 discovery and evaluation boards. For more information about STM32H7 series, please visit: http://www.st.com/en/microcontrollers/stm32h7-series.html Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-13 16:00:12 +00:00
*/
#include <common.h>
#include <asm/io.h>
arm: v7R: Add support for MPU The Memory Protection Unit(MPU) allows to partition memory into regions and set individual protection attributes for each region. In absence of MPU a default map[1] will take effect. Add support for configuring MPU on Cortex-R, by reusing the existing support for Cortex-M processor. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0460d/I1002400.html Tested-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2018-04-26 12:51:30 +00:00
#include <asm/armv7_mpu.h>
board: Add stm32h7 SoC, discovery and evaluation boards support This patch adds support for stm32h7 soc family, stm32h743 discovery and evaluation boards. For more information about STM32H7 series, please visit: http://www.st.com/en/microcontrollers/stm32h7-series.html Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-13 16:00:12 +00:00
int arch_cpu_init(void)
{
int i;
struct mpu_region_config stm32_region_config[] = {
/*
mach-stm32: Use default memory map as background region On linux kernel side, on STM32F7 and STM32H7 SoCs, DMA requires uncachable regions. These regions are defined in DT. Since kernel linux v4.15, on ARMv7-M Cortex, kernel is able to configure MPU regions depending on DT settings. As kernel is able to configure MPU, this allows to remove MPU region settings in bootloader. On Cortex M processors, MPU allows to use a default memory map. (see B3.5.4 MPU Control Register, MPU_CTRL in https://developer.arm.com/products/architecture/m-profile/docs/ddi0403/latest/armv7-m-architecture-reference-manual) Use the default memory map as background region for all STM32 SoCs family with an additional MPU region corresponding to the SDRAM area. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-02-28 16:15:00 +00:00
* Make SDRAM area cacheable & executable.
board: Add stm32h7 SoC, discovery and evaluation boards support This patch adds support for stm32h7 soc family, stm32h743 discovery and evaluation boards. For more information about STM32H7 series, please visit: http://www.st.com/en/microcontrollers/stm32h7-series.html Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-13 16:00:12 +00:00
*/
mach-stm32: Use default memory map as background region On linux kernel side, on STM32F7 and STM32H7 SoCs, DMA requires uncachable regions. These regions are defined in DT. Since kernel linux v4.15, on ARMv7-M Cortex, kernel is able to configure MPU regions depending on DT settings. As kernel is able to configure MPU, this allows to remove MPU region settings in bootloader. On Cortex M processors, MPU allows to use a default memory map. (see B3.5.4 MPU Control Register, MPU_CTRL in https://developer.arm.com/products/architecture/m-profile/docs/ddi0403/latest/armv7-m-architecture-reference-manual) Use the default memory map as background region for all STM32 SoCs family with an additional MPU region corresponding to the SDRAM area. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-02-28 16:15:00 +00:00
#if defined(CONFIG_STM32F4)
board: Add stm32h7 SoC, discovery and evaluation boards support This patch adds support for stm32h7 soc family, stm32h743 discovery and evaluation boards. For more information about STM32H7 series, please visit: http://www.st.com/en/microcontrollers/stm32h7-series.html Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-13 16:00:12 +00:00
{ 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
mach-stm32: Use default memory map as background region On linux kernel side, on STM32F7 and STM32H7 SoCs, DMA requires uncachable regions. These regions are defined in DT. Since kernel linux v4.15, on ARMv7-M Cortex, kernel is able to configure MPU regions depending on DT settings. As kernel is able to configure MPU, this allows to remove MPU region settings in bootloader. On Cortex M processors, MPU allows to use a default memory map. (see B3.5.4 MPU Control Register, MPU_CTRL in https://developer.arm.com/products/architecture/m-profile/docs/ddi0403/latest/armv7-m-architecture-reference-manual) Use the default memory map as background region for all STM32 SoCs family with an additional MPU region corresponding to the SDRAM area. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-02-28 16:15:00 +00:00
O_I_WB_RD_WR_ALLOC, REGION_16MB },
#endif
board: Add stm32h7 SoC, discovery and evaluation boards support This patch adds support for stm32h7 soc family, stm32h743 discovery and evaluation boards. For more information about STM32H7 series, please visit: http://www.st.com/en/microcontrollers/stm32h7-series.html Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-13 16:00:12 +00:00
mach-stm32: Use default memory map as background region On linux kernel side, on STM32F7 and STM32H7 SoCs, DMA requires uncachable regions. These regions are defined in DT. Since kernel linux v4.15, on ARMv7-M Cortex, kernel is able to configure MPU regions depending on DT settings. As kernel is able to configure MPU, this allows to remove MPU region settings in bootloader. On Cortex M processors, MPU allows to use a default memory map. (see B3.5.4 MPU Control Register, MPU_CTRL in https://developer.arm.com/products/architecture/m-profile/docs/ddi0403/latest/armv7-m-architecture-reference-manual) Use the default memory map as background region for all STM32 SoCs family with an additional MPU region corresponding to the SDRAM area. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-02-28 16:15:00 +00:00
#if defined(CONFIG_STM32F7)
{ 0xC0000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
O_I_WB_RD_WR_ALLOC, REGION_16MB },
#endif
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 <patrice.chotard@st.com> Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
2017-11-16 07:59:21 +00:00
mach-stm32: Use default memory map as background region On linux kernel side, on STM32F7 and STM32H7 SoCs, DMA requires uncachable regions. These regions are defined in DT. Since kernel linux v4.15, on ARMv7-M Cortex, kernel is able to configure MPU regions depending on DT settings. As kernel is able to configure MPU, this allows to remove MPU region settings in bootloader. On Cortex M processors, MPU allows to use a default memory map. (see B3.5.4 MPU Control Register, MPU_CTRL in https://developer.arm.com/products/architecture/m-profile/docs/ddi0403/latest/armv7-m-architecture-reference-manual) Use the default memory map as background region for all STM32 SoCs family with an additional MPU region corresponding to the SDRAM area. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-02-28 16:15:00 +00:00
#if defined(CONFIG_STM32H7)
{ 0xD0000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
O_I_WB_RD_WR_ALLOC, REGION_32MB },
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 <patrice.chotard@st.com> Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
2017-11-16 07:59:21 +00:00
#endif
board: Add stm32h7 SoC, discovery and evaluation boards support This patch adds support for stm32h7 soc family, stm32h743 discovery and evaluation boards. For more information about STM32H7 series, please visit: http://www.st.com/en/microcontrollers/stm32h7-series.html Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-13 16:00:12 +00:00
};
disable_mpu();
for (i = 0; i < ARRAY_SIZE(stm32_region_config); i++)
mpu_config(&stm32_region_config[i]);
enable_mpu();
return 0;
}
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