Just basic support, so we get a shell on mini-uart and SD
working and can boot a Linux kernel with all cores usable.
Needs more work for USB and Ethernet, but I'll leave that
to others now that the initial hurdle is overcome.
I tested this series on Raspberry Pi 3b (both 32-bit and newly
added 64-bit support) and Raspberry Pi 4b (both 32/64-bit).
v1 -> v2:
- add new common barebox-raspberry-pi.img that includes all
enabled DTs. The old approach with barebox-dt-2nd.img proved
inadequate, because VideoCore applied overlays to barebox DT,
when they were needed for the kernel and it made support
for Raspberry Pi kernel (with different bindings) harder.
- Use mailbox in PBL to determine which DT to use
- Use compressed DTBs
- fix breakage for existing 64-bit platforms due to
how CPU/SYS_SUPPORTS_64BIT_KERNEL was mishandled
- fix /env/boot/rpi for 64-bit
- replace ns16550 driver hack with DT hack
Boot log:
>Deep probe supported due to raspberrypi,4-model-b
Switch to console [cs0]
barebox 2022.05.0-00152-g628da31493e4 #14 Wed Jun 8 22:35:07 CEST 2022
Board: Raspberry Pi 4 Model B
Deep probe supported due to raspberrypi,4-model-b
reserved-memory: region /memreserve 0x00000000-0x00000fff
WARNING: dwc2 fe980000.usb@xxxxxxxxxxx: dwc2_core_reset: Timeout!
Waiting for Core Soft Reset
ERROR: dwc2 fe980000.usb@xxxxxxxxxxx: probe failed: Connection timed out
WARNING: bcm2835_mci fe340000.mmc@xxxxxxxxxxx: Failed to get 'vmmc'
regulator (ignored).
bcm2835_mci fe340000.mmc@xxxxxxxxxxx: registered as mci0
malloc space: 0x1d87f1e0 -> 0x3b0fe3bf (size 472.5 MiB)
mci0: detected SD card version 2.0
mci0: registered disk0
environment load /boot/barebox.env: No such file or directory
Maybe you have to create the partition.
Ahmad Fatoum (20):
ARM64: asm: implement read_cpuid_id()
dma: add dma_sync nop stubs for PBL
ARM: rpi: move bcm2835_add_device_sdram() into header
ARM: rpi: support PBL use of mbox
ARM: rpi: split out mbox helpers to share code with PBL
ARM: rpi: switch to ARM_USE_COMPRESSED_DTB
ARM: rpi: add generic Raspberry Pi image
ARM: rpi: support FDT in x0 for 64bit configurations
serial: ns16550: rpi: remove ungating now done by proper clk driver
ARM: cpu: prevent recursive dependencies via CPU_SUPPORTS_64BIT_KERNEL
ARM: cpu: remove unnecessary CONFIG_SYS_SUPPORTS_64BIT_KERNEL
ARM: cpu: remove unused SYS_SUPPORTS_32BIT_KERNEL
ARM: rpi: add Raspberry Pi 3 64-bit build support
ARM: rpi: rpi3: disallow MMU_EARLY && 64BIT
clk: rpi: add Raspberry Pi 4 support
clocksource: bcm2835: bump below architeced timer for AArch64
ARM: rpi: add Raspberry Pi 4 support
ARM: rpi: add debug_ll support for Raspberry Pi 4
doc: bcm283x: reference newer firmware
ARM: rpi: use correct kernel8.img as name for 64-bit
Uwe Kleine-König (1):
mci: bcm2835: add bcm2711-emmc2 (Rpi4) support
Documentation/boards/bcm2835.rst | 17 ++-
arch/arm/Kconfig | 10 +-
arch/arm/boards/raspberry-pi/Makefile | 1 +
arch/arm/boards/raspberry-pi/lowlevel.c | 129 +++++++++++++++---
arch/arm/boards/raspberry-pi/lowlevel.h | 5 +
arch/arm/boards/raspberry-pi/mbox-helpers.c | 73 ++++++++++
arch/arm/boards/raspberry-pi/rpi-common.c | 129 ++++++------------
arch/arm/configs/rpi_v8a_defconfig | 111 +++++++++++++++
arch/arm/cpu/Kconfig | 7 -
arch/arm/dts/Makefile | 1 +
arch/arm/dts/bcm2711-rpi-4.dts | 18 +++
arch/arm/include/asm/cputype.h | 22 ++-
arch/arm/include/asm/system_info.h | 6 +
arch/arm/mach-bcm283x/Kconfig | 29 +++-
arch/arm/mach-bcm283x/Makefile | 2 +-
arch/arm/mach-bcm283x/core.c | 57 ++++----
arch/arm/mach-bcm283x/include/mach/core.h | 23 ++--
arch/arm/mach-bcm283x/include/mach/debug_ll.h | 26 ++++
arch/arm/mach-bcm283x/include/mach/mbox.h | 4 +
arch/arm/mach-bcm283x/include/mach/platform.h | 5 +-
arch/arm/mach-bcm283x/mbox.c | 26 ++--
arch/arm/mach-imx/Kconfig | 2 +-
arch/arm/mach-layerscape/Kconfig | 2 +-
arch/arm/mach-rockchip/Kconfig | 2 +-
common/Kconfig | 7 +
drivers/clk/clk-rpi.c | 42 ++++--
drivers/clocksource/bcm2835.c | 3 +-
drivers/mci/mci-bcm2835.c | 4 +-
drivers/serial/serial_ns16550.c | 4 -
images/Makefile.bcm283x | 10 ++
include/dma.h | 19 +++
31 files changed, 593 insertions(+), 203 deletions(-)
create mode 100644 arch/arm/boards/raspberry-pi/mbox-helpers.c
create mode 100644 arch/arm/configs/rpi_v8a_defconfig
create mode 100644 arch/arm/dts/bcm2711-rpi-4.dts
--
2.30.2
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