[PATCH v2 0/3] rpi5: initial support

[Dmitry Malkin]

These patches bring initial boot support for RPI5. Without it the
latest master fails with the message:
> DRAM:  mbox: Timeout waiting for response
> bcm2835: Could not query ARM memory size

With those patches and rpi_arm64_defconfig (with disabled
CONFIG_VIDEO_BCM2835) I'm able to get a working u-boot prompt (over
serial). FDT comes from firmware (EEPROM).

> U-Boot 2024.01-rc3-00003
>
> DRAM:  1016 MiB (effective 8 GiB)
> mbox: Header response code invalid
> bcm2835: Could not query board revision
> FDT model : Raspberry Pi 5 Model B Rev 1.0
> Core:  14 devices, 7 uclasses, devicetree: board
> MMC:
> Loading Environment from FAT... ** Bad device specification mmc 0 **
> In:    serial,usbkbd
> Out:   serial,vidconsole
> Err:   serial,vidconsole
> Net:   No ethernet found.
> starting USB...
> No working controllers found
> Hit any key to stop autoboot:  0
> No working controllers found
> No ethernet found.
> No ethernet found.
> U-Boot>

These patches are based on v2024.01-rc3 and tested with RPI5 8GB.

Known issues:
* CONFIG_VIDEO_BCM2835 doesn't work.
* MBOX get board revision (0x10002) doesn't work (the response status
is 0x8000_0001). Looks like a number of tags doesn't work anymore
(board/serial/MAC) but could be fetched from FW FDT.

v2:
  explicitly set .data section for rpi_bcm283x_mbox_addr due to relocation issue
  update memory map with VPU range
  add a patch to get human readable model from FW FDT

Dmitry Malkin (3):
  rpi5: add initial memory map for bcm2712
  rpi5: add alternative way to get MBOX address via FDT node
  rpi5: get_board is no longer works. Print model name from FW FDT

 arch/arm/mach-bcm283x/include/mach/base.h |  1 +
 arch/arm/mach-bcm283x/include/mach/mbox.h |  4 +--
 arch/arm/mach-bcm283x/init.c              | 40 ++++++++++++++++++++++-
 board/raspberrypi/rpi/rpi.c               |  6 ++++
 4 files changed, 48 insertions(+), 3 deletions(-)

-- 
2.40.1