On Tue, 5 Jul 2022 at 19:14, Peter Delevoryas <pe...@pjd.dev> wrote: > > Signed-off-by: Peter Delevoryas <pe...@pjd.dev>
Reviewed-by: Joel Stanley <j...@jms.id.au> > --- > docs/system/arm/aspeed.rst | 48 ++++++++++++++++++++++++++++++++++++++ > 1 file changed, 48 insertions(+) > > diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst > index 5d0a7865d3..b233191b67 100644 > --- a/docs/system/arm/aspeed.rst > +++ b/docs/system/arm/aspeed.rst > @@ -136,6 +136,54 @@ AST1030 SoC based machines : > > - ``ast1030-evb`` Aspeed AST1030 Evaluation board (Cortex-M4F) > > +Facebook Yosemite v3.5 Platform and CraterLake Server (``fby35``) > +================================================================== > + > +Facebook has a series of multi-node compute server designs named > +Yosemite. The most recent version released was > +`Yosemite v3 > <https://www.opencompute.org/documents/ocp-yosemite-v3-platform-design-specification-1v16-pdf>`. > + > +Yosemite v3.5 is an iteration on this design, and is very similar: there's a > +baseboard with a BMC, and 4 server slots. The new server board design termed > +"CraterLake" includes a Bridge IC (BIC), with room for expansion boards to > +include various compute accelerators (video, inferencing, etc). At the > moment, > +only the first server slot's BIC is included. > + > +Yosemite v3.5 is itself a sled which fits into a 40U chassis, and 3 sleds > +can be fit into a chassis. See `here > <https://www.opencompute.org/products/423/wiwynn-yosemite-v3-server>` > +for an example. > + > +In this generation, the BMC is an AST2600 and each BIC is an AST1030. The BMC > +runs `OpenBMC <https://github.com/facebook/openbmc>`, and the BIC runs > +`OpenBIC <https://github.com/facebook/openbic>`. > + > +Firmware images can be retrieved from the Github releases or built from the > +source code, see the README's for instructions on that. This image uses the > +"fby35" machine recipe from OpenBMC, and the "yv35-cl" target from OpenBIC. > +Some reference images can also be found here: > + > +.. code-block:: bash > + > + $ wget > https://github.com/facebook/openbmc/releases/download/openbmc-e2294ff5d31d/fby35.mtd > + $ wget > https://github.com/peterdelevoryas/OpenBIC/releases/download/oby35-cl-2022.13.01/Y35BCL.elf > + > +Since this machine has multiple SoC's, each with their own serial console, > the > +recommended way to run it is to allocate a pseudoterminal for each serial > +console and let the monitor use stdio. Also, starting in a paused state is > +useful because it allows you to attach to the pseudoterminals before the boot > +process starts. > + > +.. code-block:: bash > + > + $ qemu-system-arm -machine fby35 \ > + -drive file=fby35.mtd,format=raw,if=mtd \ > + -device loader,file=Y35BCL.elf,addr=0,cpu-num=2 \ I came across a quirk of the qemu commandline when testing. -drive knows how to expand ~ in a path, but -device loader does not. Something for someone to look into on a rainy day! eg: $ build/qemu-system-arm -M fby35 -drive file=~/tmp/fby35.mtd,format=raw,if=mtd -device loader,file=~/tmp/Y35BCL.elf,addr=0,cpu-num=2 -serial pty -serial pty -serial mon:stdio -display none -S char device redirected to /dev/pts/3 (label serial0) char device redirected to /dev/pts/5 (label serial1) qemu-system-arm: warning: Aspeed iBT has no chardev backend ~/tmp/Y35BCL.elf: No such file or directory qemu-system-arm: -device loader,file=~/tmp/Y35BCL.elf,addr=0,cpu-num=2: Cannot load specified image ~/tmp/Y35BCL.elf loader uses open(2) in load_elf_ram_sym. The call stack for -drive looks like this (using a bad path to make it easier to identify what's going on): #0 __libc_open64 (file=file@entry=0xaaaaac009250 "/home/joel/tmp/fby35.mtda", oflag=oflag@entry=524288) at ../sysdeps/unix/sysv/linux/open64.c:37 #1 0x0000aaaaab3b18bc in open64 (__oflag=524288, __path=0xaaaaac009250 "/home/joel/tmp/fby35.mtda") at /usr/include/aarch64-linux-gnu/bits/fcntl2.h:59 #2 qemu_open_cloexec (mode=0, flags=0, name=0xaaaaac009250 "/home/joel/tmp/fby35.mtda") at ../util/osdep.c:286 #3 qemu_open_internal (name=name@entry=0xaaaaac009250 "/home/joel/tmp/fby35.mtda", flags=flags@entry=0, mode=mode@entry=0, errp=errp@entry=0xffffffffeb70) at ../util/osdep.c:330 #4 0x0000aaaaab3b1f30 in qemu_open (name=name@entry=0xaaaaac009250 "/home/joel/tmp/fby35.mtda", flags=flags@entry=0, errp=errp@entry=0xffffffffeb70) at ../util/osdep.c:360 #5 0x0000aaaaab30d9d8 in raw_open_common (bs=0xaaaaac002c40, options=<optimized out>, bdrv_flags=155650, open_flags=<optimized out>, device=<optimized out>, errp=0xffffffffeb70) at ../block/file-posix.c:680 #6 0x0000aaaaab2a53d0 in bdrv_open_driver (bs=bs@entry=0xaaaaac002c40, drv=drv@entry=0xaaaaabc13250 <bdrv_file>, node_name=<optimized out>, options=options@entry=0xaaaaac008230, open_flags=open_flags@entry=155650, errp=errp@entry=0xffffffffec18) at ../block.c:1625 #7 0x0000aaaaab2a9454 in bdrv_open_common (errp=0xffffffffec18, options=0xaaaaac008230, file=0x0, bs=0xaaaaac002c40) at ../block.c:1922 #8 bdrv_open_inherit (filename=<optimized out>, filename@entry=0xaaaaabff9cd0 "/home/joel/tmp/fby35.mtda", reference=reference@entry=0x0, options=0xaaaaac008230, flags=<optimized out>, flags@entry=0, parent=parent@entry=0xaaaaabffb580, child_class=child_class@entry=0xaaaaab864498 <child_of_bds>, child_role=child_role@entry=19, errp=errp@entry=0xffffffffed48) at ../block.c:3991 #9 0x0000aaaaab2aa35c in bdrv_open_child_bs (filename=filename@entry=0xaaaaabff9cd0 "/home/joel/tmp/fby35.mtda", options=options@entry=0xaaaaac000a50, bdref_key=bdref_key@entry=0xaaaaab573010 "file", parent=parent@entry=0xaaaaabffb580, child_class=child_class@entry=0xaaaaab864498 <child_of_bds>, child_role=child_role@entry=19, allow_none=allow_none@entry=true, errp=errp@entry=0xffffffffed48) at ../block.c:3624 #10 0x0000aaaaab2a98e4 in bdrv_open_inherit (filename=filename@entry=0xaaaaabff9cd0 "/home/joel/tmp/fby35.mtda", reference=reference@entry=0x0, options=0xaaaaac000a50, options@entry=0xaaaaabff8b70, flags=<optimized out>, parent=parent@entry=0x0, child_class=child_class@entry=0x0, child_role=child_role@entry=0, errp=errp@entry=0xaaaaabc62368 <error_fatal>) at ../block.c:3938 #11 0x0000aaaaab2aa758 in bdrv_open (filename=filename@entry=0xaaaaabff9cd0 "/home/joel/tmp/fby35.mtda", reference=reference@entry=0x0, options=options@entry=0xaaaaabff8b70, flags=<optimized out>, errp=errp@entry=0xaaaaabc62368 <error_fatal>) at ../block.c:4086 #12 0x0000aaaaab2c59c8 in blk_new_open (filename=filename@entry=0xaaaaabff9cd0 "/home/joel/tmp/fby35.mtda", reference=reference@entry=0x0, options=options@entry=0xaaaaabff8b70, flags=<optimized out>, errp=errp@entry=0xaaaaabc62368 <error_fatal>) at ../block/block-backend.c:454 #13 0x0000aaaaab2956c8 in blockdev_init (file=file@entry=0xaaaaabff9cd0 "/home/joel/tmp/fby35.mtda", bs_opts=bs_opts@entry=0xaaaaabff8b70, errp=errp@entry=0xaaaaabc62368 <error_fatal>) at ../blockdev.c:592 #14 0x0000aaaaab296884 in drive_new (all_opts=0xaaaaabd1a3b0, block_default_type=<optimized out>, errp=0xaaaaabc62368 <error_fatal>) at ../blockdev.c:981 #15 0x0000aaaaaafea1e8 in drive_init_func (opaque=<optimized out>, opts=<optimized out>, errp=<optimized out>) at ../softmmu/vl.c:648 #16 0x0000aaaaab3c0a74 in qemu_opts_foreach (list=<optimized out>, func=func@entry=0xaaaaaafea1d0 <drive_init_func>, opaque=opaque@entry=0xaaaaabf3eb58, errp=errp@entry=0xaaaaabc62368 <error_fatal>) at ../util/qemu-option.c:1135 #17 0x0000aaaaaafee9d8 in configure_blockdev (bdo_queue=0xaaaaabb866c0 <bdo_queue>, snapshot=0, machine_class=0xaaaaabf3eab0) at ../softmmu/vl.c:707 #18 qemu_create_early_backends () at ../softmmu/vl.c:1882 #19 qemu_init (argc=<optimized out>, argv=0xfffffffff358, envp=envp@entry=0x0) at ../softmmu/vl.c:3502 #20 0x0000aaaaaadb4300 in qemu_main (envp=0x0, argv=<optimized out>, argc=<optimized out>) at ../softmmu/main.c:35 #21 main (argc=<optimized out>, argv=<optimized out>) at ../softmmu/main.c:45 and that was where I lost interest. > + -serial pty -serial pty -serial mon:stdio \ > + -display none -S > + $ screen /dev/tty0 # In a separate TMUX pane, terminal window, etc. > + $ screen /dev/tty1 > + $ (qemu) c # Start the boot process once screen is setup. > + > Supported devices > ----------------- > > -- > 2.37.0 >
