Re: RPI5 status?

[Denis Ovsienko <denis%ovsienko.info@localhost>]

>   what's up with RPI5?

Hello Greg.

RPI5 hadrware design has replaced some essential pieces with new ones,
which are not backward compatible, so it seems each OS will have to do
the usual rounds through bootloaders, DeviceTree files, OS kernel and
drivers, and the userspace, as before.  Currently I see only the most
recent RaspiOS and Ubuntu 23.10 in shape for RPI5.  If NetBSD 10
release is about to freeze anytime soon, the only practicable move may
be to make it clear in the installation notes that it does not support
RPI5.

Let me suggest to resolve the unfinished business with RPI4 support in
NetBSD 10, in that the image does not boot by default (see my recent
thread).

For reference, this is what RPI5 serial console says about the NetBSD
10.0RC1 image that boots on RPI4B (after the manual firmware updates, as
discussed):

Boot mode: SD (01) order f4
SD HOST: 200000000 CTL0: 0x00800000 BUS: 400000 Hz actual: 390625 HZ div: 512 (256) status: 0x1fff0000 delay: 276
SD HOST: 200000000 CTL0: 0x00800f00 BUS: 400000 Hz actual: 390625 HZ div: 512 (256) status: 0x1fff0000 delay: 276
OCR c0ff8000 [9]
CID: 009f5449534436344761384802bf0168
CSD: 400e00325b590001cf9f7f800a400000
SD: bus-width: 4 spec: 2 SCR: 0x02058487 0x01006432
SD HOST: 200000000 CTL0: 0x00800f04 BUS: 50000000 Hz actual: 50000000 HZ div: 4 (2) status: 0x1fff0000 delay: 2
MBR: 0x00008000,  163840 type: 0x0c
MBR: 0x00000000,       0 type: 0x00
MBR: 0x00000000,       0 type: 0x00
MBR: 0x00000001,   32767 type: 0xee
Trying partition: 0
type: 32 lba: 32768 'NetBSD  ' ' NETBSD     ' clusters 81269 (2)
rsc 32 fat-sectors 635 root dir cluster 2 sectors 0 entries 0
FAT32 clusters 81269
[sdcard] autoboot.txt not found
Trying partition: 0
type: 32 lba: 32768 'NetBSD  ' ' NETBSD     ' clusters 81269 (2)
rsc 32 fat-sectors 635 root dir cluster 2 sectors 0 entries 0
FAT32 clusters 81269
Read config.txt bytes      155 hnd 0x58cb
[sdcard] pieeprom.upd not found
usb_max_current_enable default 0 max-current 5000
[sdcard] dtb/broadcom/bcm2712-rpi-5-b.dtb not found
Device-tree file "dtb/broadcom/bcm2712-rpi-5-b.dtb" not found.

The installed operating system (OS) does not indicate support for Raspberry Pi 5
Update the OS or set os_check=0 in config.txt to skip this check.

-- 
    Denis Ovsienko