CVS commit: src/sys/arch/evbarm

["matthew green" <mrg%netbsd.org@localhost>]

Module Name:    src
Committed By:   mrg
Date:           Sun Feb  5 22:42:39 UTC 2023

Modified Files:
        src/sys/arch/evbarm/evbarm: autoconf.c
        src/sys/arch/evbarm/fdt: fdt_machdep.c
        src/sys/arch/evbarm/include: types.h

Log Message:
fix root detection on evbarm when raid is involved

there are several problems solved in this change:
- lots of work was re-done when we already have determined the
  device booted from, so several new early returns introduced
  if booted_device has been set
- due to the lack of cpu_bootconf(), raidframe softroot would
  override "root=xxx" on the boot command line (note that
  platforms that use eg, device_register() to detect the boot
  device are not affected by this issue as they find the
  boot device much earlier.)
- in the new cpu_bootconf(), switch the order of the platform
  boot-config with the set_root_device() call.  this avoids a
  problem where "root=xxx" is checked after automated methods,
  and is thus ignored.
- in fdt_detect_root_device(), remove the code to add "root=xxx""
  string to the boot_args[] that would be later parsed by the
  set_root_device() call, and simply set booted_device and, for
  mbr installs, booted_partition directly.  also, for any
  successful call, perform an early return.
- define __HAVE_CPU_BOOTCONF so early boot calls cpu_bootconf().

tested on:
- rockpro64 booting from emmc, sata (big, and little endian)
- rockpro64 loading kernel from msdos partition
- rockpro64 booting from network (fails to auto-detect, with or
  without this change)
- quartz64 booting from nvme
- lx2k booting from nvme

XXX: pullup-10


To generate a diff of this commit:
cvs rdiff -u -r1.23 -r1.24 src/sys/arch/evbarm/evbarm/autoconf.c
cvs rdiff -u -r1.99 -r1.100 src/sys/arch/evbarm/fdt/fdt_machdep.c
cvs rdiff -u -r1.15 -r1.16 src/sys/arch/evbarm/include/types.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.