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Date:      Mon, 18 Dec 2023 10:44:20 -0800
From:      Mark Millard <marklmi@yahoo.com>
To:        Harry <freebsd@omnilan.de>
Cc:        freebsd-arm <freebsd-arm@freebsd.org>
Subject:   Re: u-boot-nanopi-r5c [Was: Re: 14-BETA5 panic on rk3566]
Message-ID:  <6DCACFA0-0377-4D6F-804A-CF5CEC8918DB@yahoo.com>
In-Reply-To: <04c04e63-cfe2-4fa6-b6c3-615b6ae8a3d6@omnilan.de>
References:  <2CE509A2-AECF-4562-A080-589AC7888F21@edc.ro> <20231012184430.952dd9d5a26c97ee225c9e77@bidouilliste.com> <5211ad65-5289-4776-b839-7c681de77bf4@omnilan.de> <20231215165640.78bab647c883368b8fc9c34e@bidouilliste.com> <04c04e63-cfe2-4fa6-b6c3-615b6ae8a3d6@omnilan.de>

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On Dec 18, 2023, at 10:22, Harry <freebsd@omnilan.de> wrote:
>=20
> On 12/15/23 16:56, Emmanuel Vadot wrote:
>> U-Boot also doesn't support the DRAM controller so we also need an
>> external blob from rkbin.
>> That's the main reason I haven't done ports for u-boot on rk356x so
>> one have to compile u-boot themselve.
>> It can be simply done like any other u-boot targets and only needs =
two
>> env variable :
>> export BL31=3D/path/to/rkbin/bin/rk35/rk3568_bl31_v1.43.elf
>> export
>> ROCKCHIP_TPL=3D/path/to/rkbin/bin/rk35/rk3568_ddr_1560MHz_v1.18.bin
>=20
> Thanks! I'm happy that - besides the ddr_CLOCK - it matches what I =
came up with so far :-)
> I'm trying to understand what happens with the help of this:
> http://opensource.rock-chips.com/wiki_Boot_option
> The attached diff (updates sysutils/linux-rkbin =
(g20190719->g20230726), sysutils/u-boot-master (2020.07->2023.10) and =
adds sysutils/u-boot-nanopi-r5c)
> allows me to build u-boot, supposedly supporting R5C(rk3568).
> After putting these onto SD-card with
> dd =
if=3D/.chroot/build.FreeBSD-14/usr/local/share/u-boot/u-boot-nanopi-r5c/id=
bloader.img of=3D/dev/da1 seek=3D8 bs=3D4k conv=3Dsync
> dd =
if=3D/.chroot/build.FreeBSD-14/usr/local/share/u-boot/u-boot-nanopi-r5c/u-=
boot.itb of=3D/dev/da1 seek=3D2048 bs=3D4k conv=3Dsync
> my nanopi-R5C boots from eMMC instead of SD.
> I downloaded a NANOPI-R5C_EFI.itb elsewhere.
> I can get the TianoCore port booting...
> But I'm missing the part, where ubldr, the FreeBSD post-u-boot-loader, =
is supposed to take over - and how...
> I simply created a freebsd-ufs partition and put /boot along with a =
loader.conf onto it, which works using the foreign TianoCore port, but =
not my newly created u-boot.
>=20
> What am I missung after dd'ing?
> Any hints appreciated!

FYI: ubldr is no longer part of the standard/typical way of booting =
these days,
at least for armv7 (and aarch64):

=
https://cgit.freebsd.org/ports/commit/sysutils/u-boot-master?id=3D0d6e5081=
eb00

reports (back in mid-2021):

QUOTE
author Emmanuel Vadot <manu@FreeBSD.org> 2021-05-11 18:27:14 +0000
committer Emmanuel Vadot <manu@FreeBSD.org> 2021-05-11 20:22:54 +0000
commit 0d6e5081eb0080c4703f1c5cc69c34f38d9149b7 (patch)
. . .
sysutils/u-boot-*: Remove ubldr support
We have been using loader.efi on armv7 for a long time now. Remove =
support for booting with ubldr and the needed patches that were never =
upstreamed. While here add CONFIG_EFI_GRUB_ARM32_WORKAROUND=3Dy in the =
Fragment as it's needed to have the cache flushed for us when loader.efi =
is started.
END QUOTE

Any documentation indicating sny ubldr involvement likely predates that
change.

> -harry
>=20
> P.S.: sysutils/u-boot-nanopi-r5c/Makefile is wrong in the diff =
attached, the I used the commented nanopi-r5c-rk3568_defconfig! =
evb-rk3568_defconfig is a leftover...
>=20
> <FE-r5c_ports.diff.xz>



=3D=3D=3D
Mark Millard
marklmi at yahoo.com




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