[src/trunk]: src UPDATING: More details on bootloader update needed for >=9.9...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f3f2a7cc3dc5
branches:  trunk
changeset: 371773:f3f2a7cc3dc5
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sat Oct 08 08:21:56 2022 +0000

description:
UPDATING: More details on bootloader update needed for >=9.99.100.

diffstat:

 UPDATING |  32 ++++++++++++++++++++++++++------
 1 files changed, 26 insertions(+), 6 deletions(-)

diffs (47 lines):

diff -r 3122dac2adf0 -r f3f2a7cc3dc5 UPDATING
--- a/UPDATING  Sat Oct 08 07:27:03 2022 +0000
+++ b/UPDATING  Sat Oct 08 08:21:56 2022 +0000
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.332 2022/09/21 22:01:56 gutteridge Exp $
+$NetBSD: UPDATING,v 1.333 2022/10/08 08:21:56 riastradh Exp $
 
 This file (UPDATING) is intended to be a brief reference to recent
 changes that might cause problems in the build process, and a guide for
@@ -21,12 +21,32 @@
 
 20220921:
        Since the kernel version was bumped to 9.99.100, the bootloader
-       must be updated on x86 and efiboot platforms in order to load
-       modules.
+       must be updated on x86 or EFI boot platforms in order to load
+       modules from boot.cfg(5) or interactively at the bootloader
+       prompt.
+
+       The kernel can still load modules at runtime, with modload(8)
+       or modules.conf(5), with no bootloader update.  This will not
+       affect release branches because it only applies to patch
+       numbers >=100.
 
-       The kernel can still load modules at runtime with no bootloader
-       update.  This will not affect release branches because it only
-       applies to patch numbers >=100.
+       On x86 (i386 or amd64) with BIOS boot, this requires copying a
+       new /usr/mdec/boot to /boot.  You can build this in the destdir
+       by running `$TOOLDIR/bin/nbmake-$ARCH dependall install' in
+       sys/arch/i386/stand.
+
+       On platforms with EFI boot (including x86 with EFI boot), this
+       requires copying a new /usr/mdec/boot*.efi to the EFI/BOOT/
+       directory on the EFI system partition.  The boot*.efi file is:
+
+       aarch64 bootaa64.efi
+       amd64   bootx64.efi
+       arm     bootarm.efi     (32-bit arm)
+       i386    bootx32.efi
+
+       You can build this in the destdir by running
+       `$TOOLDIR/bin/nbmake-$ARCH dependall install' in
+       sys/stand/efiboot/boot*.
 
 20220821:
        Support for building extsrc/ has been deprecated.