Re: zynqmpbif - sample

Jorge Ramirez-Ortiz, Foundries
2021-07-13T14:00:14Z

On 13/07/21, Jorge Ramirez-Ortiz, Foundries wrote:
> On 13/07/21, Michal Simek wrote:
> >
> >
> > On 7/13/21 11:25 AM, Jorge Ramirez-Ortiz, Foundries wrote:
> > > On 13/07/21, Jorge Ramirez-Ortiz, Foundries wrote:
> > >> On 13/07/21, Michal Simek wrote:
> > >>> Hi,
> > >>>
> > >>> On 7/12/21 7:40 PM, Jorge Ramirez-Ortiz, Foundries wrote:
> > >>>> hi Michal,
> > >>>>
> > >>>> Would you have some sample/reference code to generate a SPL boot image
> > >>>> using zynqmpbif instead of zynqmpimage? I cant find any documentation
> > >>>> and I see no option to enable it (I was expecting to find some config
> > >>>> in Makefile.spl but I see none).
> > >>>>
> > >>>> What is the expected way of building these images?
> > >>>
> > >>> Alex implemented it for Xilinx bif format after origin zynqmpimage
> > >>> format. But usage is just like this.
> > >>>
> > >>> [u-boot](debian-sent)$ ./tools/mkimage -T zynqmpbif -d /tmp/bif
> > >>> /tmp/boot.bin
> > >>> Image Type : Xilinx ZynqMP Boot Image support
> > >>> Image Offset : 0x000009c0
> > >>> Image Size : 147216 bytes (147216 bytes packed)
> > >>> PMUFW Size : 129792 bytes (129792 bytes packed)
> > >>> Image Load : 0xfffc0000
> > >>> Checksum : 0xfd15d661
> > >>> [u-boot](debian-sent)$ cat /tmp/bif
> > >>> image : {
> > >>> [pmufw_image, load=0xffdc0000] /mnt/disk/u-boot-bins/zynqmp/pmu.elf
> > >>> [destination_cpu=a53-0, load=0xfffc0000, bootloader] spl/u-boot-spl.bin
> > >>> }
> > >>
> > >> awesome, exactly what I needed to start with.
> > >
> > > So I can boot using the steps you mentioned above.
> > >
> > > But shouldnt the same bif work with bootgen?
> > >
> > > ****** Xilinx Bootgen v2019.2
> > > **** Build date : Oct 23 2019-22:59:42
> > > ** Copyright 1986-2019 Xilinx, Inc. All Rights Reserved.
> > >
> > > [TRACE] : Command Line parsing started
> > > [TRACE] : Command: -arch zynqmp -image ./bif -w -o bootbif.bin -log trace
> > > [INFO] : Command line parsing completed successfully
> > > [TRACE] : BIF File: ./bif
> > > [TRACE] : BIF file parsing started
> > > [TRACE] : Setting PMU FW Image file as pmu.elf
> > > [INFO] : BIF file parsing completed successfully
> > > [INFO] : Parsing Partition Data to Image
> > > [INFO] : Building image - image
> > > [INFO] : Building the Partition Header Table
> > > [INFO] : After build
> > > -- Dump of Binary Image ----
> > > 00000000 Len: 000008b8 Res: 00000000 "BootHeader"
> > > 00000000 Len: 00000040 Res: 00000000 "ImageHeaderTable"
> > > 00000000 Len: 00000024 Res: 00000800 "ImageHeader u-boot-spl.bin"
> > > 00000000 Len: 00000040 Res: 00000000 "PartitionHeader u-boot-spl.bin.0"
> > > 00000000 Len: 00000040 Res: 000016c0 "PartitionHeader Null"
> > > 00000000 Len: 00020574 Res: 00000000 "u-boot-spl.bin.0"
> > > -- End of Dump
> > > [INFO] : After align
> > > -- Dump of Binary Image ----
> > > 00000000 Len: 000008b8 Res: 00000000 "BootHeader"
> > > 000008c0 Len: 00000040 Res: 00000000 "ImageHeaderTable"
> > > 00000900 Len: 00000024 Res: 00000800 "ImageHeader u-boot-spl.bin"
> > > 00001100 Len: 00000040 Res: 00000000 "PartitionHeader u-boot-spl.bin.0"
> > > 00001140 Len: 00000040 Res: 000016c0 "PartitionHeader Null"
> > > 00002800 Len: 00020574 Res: 00000000 "u-boot-spl.bin.0"
> > > -- End of Dump
> > > [INFO] : Partition Information:
> > > [INFO] : Image: u-boot-spl.bin
> > > [INFO] : Partition 0: u-boot-spl.bin.0, Size: 132467
> > > [INFO] : After Link
> > > -- Dump of Binary Image ----
> > > 00000000 Len: 000008b8 Res: 00000000 "BootHeader"
> > > 000008c0 Len: 00000040 Res: 00000000 "ImageHeaderTable"
> > > 00000900 Len: 00000024 Res: 00000800 "ImageHeader u-boot-spl.bin"
> > > 00001100 Len: 00000040 Res: 00000000 "PartitionHeader u-boot-spl.bin.0"
> > > 00001140 Len: 00000040 Res: 000016c0 "PartitionHeader Null"
> > > 00002800 Len: 00020574 Res: 00000000 "u-boot-spl.bin.0"
> > > -- End of Dump
> > >
> > >
> > > however when I boot and inspect the processor state, xsdb returns "APU
> > > L2 cache is held in reset"
> > >
> > > Since the functionality to support RSA authentication is missing from
> > > mkimage (I'll have to add that), I would first like to see it
> > > functional with SPL using bootgen.
> > >
> > > However the same bif doesnt even boot - is this to be expected?
> > >
> > > also the layouts generated from the bif using mkimage and bootgen are
> > > completely different (it seems that naively I expected them to be the
> > > same); is there any information on the different layouts used for the
> > > bootrom?
> >
> >
> > I tested it and it works fine for me. Take a look at the code what
> > exactly is
> >
> > [u-boot]$ cat /tmp/bif
> > image : {
> > [pmufw_image] /mnt/disk/u-boot-bins/zynqmp/pmu.bin
> > [destination_cpu=a53-0, load=0xfffc0000, bootloader]
> > spl/u-boot-spl-align.bin
> > }
> >
> > Didn't try the latest bootgen but format is changing over years but none
> > is updating this tool. Feel free to take a look at it.
>
> weird, I can not boot the bin when using bootgen 2019 nor 2021.
>
> please can you send me the output of the following command so I can compare?
> vivado@trex:~/deploy/bootgen_bif$ bootgen -read boot.bin
>
> also, are you booting from QSPI?
>
> thanks a lot!

just for reference:

$ cat bif
the_ROM_image:
{
[pmufw_image, load=0xffdc0000] pmu.elf
[destination_cpu=a53-1, load=0xfffc0000, bootloader] u-boot-spl-align.bin
}

BOOTGEN
========

$./bootgen -arch zynqmp -image ./bif -w -o bootbif.bin

will generate this image:

$ ./bootgen -read bootbif.bin

****** Xilinx Bootgen v2021.1
**** Build date : Jun 18 2021-09:23:50
** Copyright 1986-2021 Xilinx, Inc. All Rights Reserved.

--------------------------------------------------------------------------------
BOOT HEADER
--------------------------------------------------------------------------------
boot_vectors (0x00) : 0x1400000014000000140000001400000014000000140000001400000014000000
width_detection (0x20) : 0xaa995566
image_id (0x24) : 0x584c4e58
encryption_keystore (0x28) : 0x00000000
header_version (0x2c) : 0x00000000
fsbl_sourceoffset (0x30) : 0x00002800
fsbl_length (0x34) : 0x00000000
fsbl_load_address (0x38) : 0x00000000
fsbl_exec_address (0x3C) : 0x00000000
fsbl_total_length (0x40) : 0x00000000
qspi_config-word (0x44) : 0x00000800
checksum (0x48) : 0xfd1a2c41
iht_offset (0x98) : 0x000008c0
pht_offset (0x9c) : 0x00001100
--------------------------------------------------------------------------------
IMAGE HEADER TABLE
--------------------------------------------------------------------------------
version (0x00) : 0x01020000 total_images (0x04) : 0x00000001
pht_offset (0x08) : 0x00001100 ih_offset (0x0c) : 0x00000900
hdr_ac_offset (0x10) : 0x00000000
--------------------------------------------------------------------------------
IMAGE HEADER (u-boot-spl-align.bin)
--------------------------------------------------------------------------------
next_ih(W) (0x00) : 0x00000000
next_pht(W) (0x04) : 0x00000440
total_partitions (0x08) : 0x00000000
total_partitions (0x0c) : 0x00000001
name (0x10) : u-boot-spl-align.bin
--------------------------------------------------------------------------------
PARTITION HEADER TABLE (u-boot-spl-align.bin.0)
--------------------------------------------------------------------------------
encrypted_length (0x00) : 0x0000815d unencrypted_length (0x04) : 0x0000815d
total_length (0x08) : 0x0000815d load_addr (0x0c) : 0x00000000
exec_addr (0x10) : 0x00000000 partition_offset (0x14) : 0x00000000
attributes (0x18) : 0xfffc0000 section_count (0x1C) : 0x00000000
checksum_offset (0x20) : 0x00000a00 iht_offset (0x24) : 0x00000216
ac_offset (0x28) : 0x00000001 checksum (0x3c) : 0x00026d91
attribute list -
trustzone [non-secure] el [el-0]
exec_state [aarch-64] dest_device [none]
encryption [no] core [none]
--------------------------------------------------------------------------------
AUTHENTICATION CERTIFICATE (u-boot-spl-align.bin.0)
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

which will NOT boot (the fsbl information in the bootheader seems a
source of concern but I dont know...hence why I was asking before
about the one it worked for you)

MKIMAGE
========

Using mkimage - as you indicated- we can generate an image that will
boot from QSPI

./mkimage -T zynqmpbif -d bif bootbif.bin

Image Type : Xilinx ZynqMP Boot Image support
Image Offset : 0x000009c0
Image Size : 132468 bytes (132468 bytes packed)
PMUFW Size : 129792 bytes (129792 bytes packed)
Image Load : 0xfffc0000
Checksum : 0xfd164999

But the bin image is NOT readable by bootgen

jramirez@trex bootgen_bif (master *%)$ ./bootgen -read bootbif.bin

****** Xilinx Bootgen v2021.1
**** Build date : Jun 18 2021-09:23:50
** Copyright 1986-2021 Xilinx, Inc. All Rights Reserved.

[ERROR] : Error reading Image header

So both utilities do generate different bootheaders and layouts.

The layout that doesnt boot - the one generated with bootgen - is the one documented in
https://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_2/ug1283-bootgen-user-guide.pdf

And the one that does work - using a boot header not readable by bootgen!-
is not documented anywhere AFAIK.

I am confused at this point.

Is there any public information about the bootrom?
does the above information make sense to you?

>
> >
> > Thanks,
> > Michal
> >