Hi All,
This patchset add support for creating a mapping for the arbitrary physical address at the given virtual address. This is needed to enable support for XHCI USB controller on PCIe bridge on Raspberry Pi 4 board, on which the USB controller's MMIO area 0x600000000 has to be remapped somewhere to fit in 4GiB virtual address space when running in ARM 32bit mode.
This patchset is a continuation of the Raspberry Pi 4 XHCI/PCIe patchset: https://patchwork.ozlabs.org/project/uboot/list/?series=176453 and the following discussion: https://lists.denx.de/pipermail/u-boot/2020-May/411086.html
Best regards Marek Szyprowski Samsung R&D Institute Poland
Changelog:
v3: - fixed broken RPi3 and lack of the identity mapping for map_physmem (for example for the itest command was broken) - added a patch fixing a new build warning
v2: https://lists.denx.de/pipermail/u-boot/2020-May/411765.html - fixed ARM64 build
v1: https://lists.denx.de/pipermail/u-boot/2020-May/411765.html - initial RFC
Patch summary:
Marek Szyprowski (2): arm: provide a function for boards init code to modify MMU virtual-physical map rpi4: add a mapping for the PCIe XHCI controller MMIO registers (ARM 32bit)
Seung-Woo Kim (1): mmc: bcm283x: fix int to pointer cast
arch/arm/include/asm/mmu.h | 8 ++++++++ arch/arm/include/asm/system.h | 11 +++++++++++ arch/arm/lib/cache-cp15.c | 24 ++++++++++++++++++------ arch/arm/mach-bcm283x/Kconfig | 1 + arch/arm/mach-bcm283x/include/mach/base.h | 8 ++++++++ arch/arm/mach-bcm283x/init.c | 20 ++++++++++++++++++++ drivers/mmc/bcm2835_sdhci.c | 2 +- include/configs/rpi.h | 7 +++++++ 8 files changed, 74 insertions(+), 7 deletions(-) create mode 100644 arch/arm/include/asm/mmu.h