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From: Julien Grall <julien@xen.org>
To: Elliott Mitchell <ehem+xen@m5p.com>,
	Masami Hiramatsu <masami.hiramatsu@linaro.org>
Cc: xen-devel@lists.xenproject.org,
	Alex Benn??e <alex.bennee@linaro.org>,
	bertrand.marquis@arm.com, andre.przywara@arm.com,
	Julien Grall <jgrall@amazon.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	George Dunlap <george.dunlap@citrix.com>,
	Ian Jackson <iwj@xenproject.org>, Jan Beulich <jbeulich@suse.com>,
	Wei Liu <wl@xen.org>, Roger Pau Monn?? <roger.pau@citrix.com>
Subject: Re: [PATCH 0/4] xen/arm: Unbreak ACPI
Date: Fri, 9 Oct 2020 10:39:26 +0100
Message-ID: <f0976c17-ad36-847b-7868-f6bb13948368@xen.org> (raw)
In-Reply-To: <20201008183904.GA56716@mattapan.m5p.com>

Hello,

On 08/10/2020 19:39, Elliott Mitchell wrote:
> On Mon, Sep 28, 2020 at 03:47:52PM +0900, Masami Hiramatsu wrote:
>> This made progress with my Xen boot on DeveloperBox (
>> https://www.96boards.org/product/developerbox/ ) with ACPI.
> 
> Adding your patch on top of Julien Grall's patch appears to push the Xen
> boot of my target device (Raspberry PI 4B with Tianocore) further.  Still
> yet to see any output attributable to the Domain 0 kernel though.
> 
> (XEN) *** LOADING DOMAIN 0 ***
> (XEN) Loading d0 kernel from boot module @ 0000000032234000
> (XEN) Loading ramdisk from boot module @ 0000000031747000
> (XEN) Allocating 1:1 mappings totalling 2048MB for dom0:
> (XEN) BANK[0] 0x00000020000000-0x00000030000000 (256MB)
> (XEN) BANK[1] 0x00000040000000-0x000000b0000000 (1792MB)
> (XEN) Grant table range: 0x000000315f3000-0x00000031633000
> (XEN) Allocating PPI 16 for event channel interrupt
> (XEN) Loading zImage from 0000000032234000 to 0000000020080000-0000000021359200
> (XEN) Loading d0 initrd from 0000000031747000 to 0x0000000028200000-0x0000000028cebfe4
> (XEN) Loading d0 DTB to 0x0000000028000000-0x0000000028000273
> (XEN) Initial low memory virq threshold set at 0x4000 pages.
> (XEN) Scrubbing Free RAM in background
> (XEN) Std. Loglevel: All
> (XEN) Guest Loglevel: All
> (XEN) *** Serial input to DOM0 (type 'CTRL-a' three times to switch input)
> (XEN) Freed 396kB init memory.
> 
> The line, "Loading d0 DTB to 0x0000000028000000-0x0000000028000273" seems
> rather suspicious as I would expect Domain 0 to see ACPI tables, not a
> device tree.

This is normal, we are creating a small device-tree to pass some 
information to dom0 (such as the ACPI tables, command line, initrd).

> 
> Your (Masami Hiramatsu) patch seems plausible, but things haven't
> progressed enough for me to endorse it.  Looks like something closer to
> the core of ACPI still needs further work, Julien Grall?

I didn't go very far during my testing because QEMU is providing ACPI 
5.1 (Xen only supports 6.0+ so far).

For your log above, Xen finished to boot and now dom0 should start 
booting. The lack of console output may be because of a crash in Linux 
during earlyboot.

Do you have the early console enabled Linux? This can be done by adding 
earlycon=xenboot on the Linux command line.

Cheers,

-- 
Julien Grall


  reply index

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-26 20:55 Julien Grall
2020-09-26 20:55 ` [PATCH 1/4] xen/acpi: Rework acpi_os_map_memory() and acpi_os_unmap_memory() Julien Grall
2020-09-28  8:18   ` Jan Beulich
2020-09-28  9:58     ` Julien Grall
2020-09-28 10:09       ` Jan Beulich
2020-09-28 10:39         ` Julien Grall
2020-10-10  9:49           ` Julien Grall
2020-10-10 10:04             ` Julien Grall
2020-09-29 11:10   ` Rahul Singh
2020-10-01  0:06   ` Stefano Stabellini
2020-10-01 15:09     ` Julien Grall
2020-09-26 20:55 ` [PATCH 2/4] xen/arm: acpi: The fixmap area should always be cleared during failure/unmap Julien Grall
2020-09-29 11:13   ` Rahul Singh
2020-10-01  0:30   ` Stefano Stabellini
2020-10-01 15:14     ` Julien Grall
2020-09-26 20:55 ` [PATCH 3/4] xen/arm: Check if the platform is not using ACPI before initializing Dom0less Julien Grall
2020-09-29 11:17   ` Rahul Singh
2020-09-30 23:26   ` Stefano Stabellini
2020-09-26 20:55 ` [PATCH 4/4] xen/arm: Introduce fw_unreserved_regions() and use it Julien Grall
2020-09-30 23:40   ` Stefano Stabellini
2020-10-01 15:34     ` Julien Grall
2020-09-27  1:47 ` [PATCH 0/4] xen/arm: Unbreak ACPI Elliott Mitchell
2020-09-29 15:28   ` Elliott Mitchell
2020-09-28  6:47 ` Masami Hiramatsu
2020-09-28 13:00   ` Masami Hiramatsu
2020-10-16 22:33     ` Xen-ARM EFI/ACPI problems (was: Re: [PATCH 0/4] xen/arm: Unbreak ACPI) Elliott Mitchell
2020-10-17  5:12       ` Elliott Mitchell
2020-10-08 18:39   ` [PATCH 0/4] xen/arm: Unbreak ACPI Elliott Mitchell
2020-10-09  9:39     ` Julien Grall [this message]
2020-10-09 14:22       ` Elliott Mitchell
2020-10-09 18:15         ` Julien Grall
2020-10-09 22:36           ` Elliott Mitchell
2020-10-09 21:49   ` Elliott Mitchell
2020-10-10 11:02   ` Julien Grall
2020-10-12 19:02     ` Stefano Stabellini
2020-10-12 21:34       ` Elliott Mitchell
2020-10-14  1:06         ` Stefano Stabellini
2020-10-14  1:37           ` Elliott Mitchell
2020-10-14 17:47             ` Julien Grall
2020-10-15 18:00               ` Stefano Stabellini
2020-10-14 17:44       ` Julien Grall
2020-09-29 11:10 ` Rahul Singh
2020-09-29 15:29 ` Alex Bennée
2020-09-29 17:07   ` Julien Grall
2020-09-29 21:11     ` Alex Bennée
2020-09-29 23:39       ` André Przywara
2020-09-30  8:51         ` Alex Bennée
2020-09-30 10:35         ` Julien Grall
2020-09-30  9:42       ` Julien Grall
2020-09-30 10:38         ` Alex Bennée
2020-09-30 11:10           ` Julien Grall

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