RPi4B: emmc2bus dma-range handling does not track the boot-time-FDT (u-boot based booting)

[Mark Millard]

On 2020-Oct-9, at 17:17, Klaus Cucinauomo <maciphone2 at googlemail.com> wrote:



>> Am 09.10.2020 um 23:25 schrieb Mark Millard <marklmi at yahoo.com>:
>> 
>> FreeBSD imports lots of linux-dts material that it does not put
>> to use. Only some of the imported material is used.
>> 
>> release/arm64/RPI3.conf indicates use of:
>> (There is not RPi4 release yet.)
>> 
>> DTB_DIR="/usr/local/share/rpi-firmware"
>> DTB="bcm2709-rpi-2-b.dtb bcm2710-rpi-3-b.dtb bcm2710-rpi-3-b-plus.dtb bcm2711-rpi-4-b.dtb"
>> . . .
>> EMBEDDEDPORTS="sysutils/u-boot-rpi3 sysutils/rpi-firmware"
>> . . .
>>       UBOOT_DIR="/usr/local/share/u-boot/u-boot-rpi3“
>> ………….
>> 
>> It is not using sys/gnu/dts/arm64/broadcom/ material.
> 
> 
> ah, `forgot to mention  :
> [dtb = DeviceTree-Blob == compiled dts(DeviceTreeSource)]
> So the dtb`s you mention are compiled off of the dts.
> So I GUESS ;-) that  sys/gnu/dts/arm64/broadcom/  isn’t a dead unused directory …

Look at the sysutils/rpi-firmware port that creates and
fills in /usr/local/share/rpi-firmware/ with the .dtb
files that are copied by the above procedure.

It makes no use of sys/gnu/dts/arm64/broadcom/ at all.

Instead it does things like the following in its Makefile:

USE_GITHUB=     yes

GH_ACCOUNT=     raspberrypi
(I omit a 2nd account that is also listed.)
GH_PROJECT=     firmware
(I omit a 2nd project that is also listed.)
FW_TAG=         2042453
. . .
GH_TAGNAME=     ${FW_TAG}
(I omit a 2nd TAGNAME that is also listed.)

and in its distinfo it has:

TIMESTAMP = 1596906388
SHA256 (raspberrypi-firmware-1.20200723.g20200723-2042453_GH0.tar.gz) = a90ce74236fa04cbb11232c077a1271afdeefb5b0af417a88076c4948e569cd4
SIZE (raspberrypi-firmware-1.20200723.g20200723-2042453_GH0.tar.gz) = 186178244
(I omit a 2nd  file that is also listed.)

So it gets a .tar.gz from github that supplies the material,
in a already compiled/built form as it turns out.

No use is made of FreeBSD's sys/gnu/dts/arm64/broadcom/ by this technique.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)