bcm63xx/u-boot/arch/arm/cpu/armv7m, branch master

CONFIG_SPL_SYS_[DI]CACHE_OFF: add

2019-05-18T12:15:35Z

While converting CONFIG_SYS_[DI]CACHE_OFF to Kconfig, there are instances where these configuration items are conditional on SPL. This commit adds SPL variants of these configuration items, uses CONFIG_IS_ENABLED(), and updates the configurations as required. Acked-by: Alexey Brodkin Signed-off-by: Trevor Woerner [trini: Make the default depend on the setting for full U-Boot, update more zynq hardware] Signed-off-by: Tom Rini

arm: armv7m: Clean up some thumb / compiler flag options

2018-05-23T17:03:42Z

- The correct way to build with thumb mode is to select SYS_THUMB_BUILD - We should be setting -march=armv7-m in arch/arm/Makefile not the sub-config.mk file. Signed-off-by: Tom Rini

arm: v7R: Add support for MPU

2018-05-07T19:53:29Z

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 Signed-off-by: Lokesh Vutla Reviewed-by: Tom Rini

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12Z

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

armv7m: disable icache before linux booting

2018-04-10T15:52:16Z

Similarly to ARMV7, on ARMV7M instruction cache memory needs to be disabled before running linux kernel to avoid kernel to be stuck. Signed-off-by: Patrice Chotard

mach-stm32: Use default memory map as background region

2018-03-14T01:45:37Z

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

stm32: fix STMicroelectronics copyright

2017-11-06T14:51:01Z

Uniformize STMicroelectronics copyrights headers for STM32 related code. Signed-off-by: Patrice Chotard

armv7m: mpu_config add missing break

2017-08-13T19:17:28Z

For DEVICE_NON_SHARED the newly assigned value of attr is overwritten due to a missing break. The problem was indicated by cppcheck. Signed-off-by: Heinrich Schuchardt

armv7m: Fix larger builds

2017-06-05T18:13:14Z

The branch instruction only has an 11-bit relative target address, which is sometimes not enough. Signed-off-by: Phil Edworthy

armv7m: add MPU configuration support

2017-05-12T12:37:06Z

Cortex-M archs support option memory protection unit (MPU). MPU is used to set the memory types, attributes, access permissions for different regions, cache policies of the device. e.g. using MPU it is possible to configure memory region as device memory or strongly ordered, memory attributes like execute never, cache policies like write-back or write-through. Signed-off-by: Vikas Manocha