qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Alistair Francis <alistair.francis@xilinx.com>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, armbru@redhat.com,
	alistair.francis@xilinx.com, crosthwaitepeter@gmail.com,
	cov@codeaurora.org, pbonzini@redhat.com, afaerber@suse.de
Subject: [Qemu-devel] [PATCH v3 0/2]  Add a generic loader
Date: Fri, 19 Feb 2016 12:40:28 -0800	[thread overview]
Message-ID: <cover.1455913505.git.alistair.francis@xilinx.com> (raw)

This work is based on the original work by Li Guang with extra
features added by Peter C and myself.

The idea of this loader is to allow the user to load multiple images
or values into QEMU at startup.

Memory values can be loaded like this: -device loader,addr=0xfd1a0104,data=0x8000000e,data-len=4

Images can be loaded like this: -device loader,file=./images/u-boot.elf,cpu=0

This can be useful and we use it a lot in Xilinx to load multiple images
into a machine at creation (ATF, Kernel and DTB for example).

It can also be used to set registers.

The limiation for arch is based off settting the ELF_ARCH macro.

The reset patch is required otherwise the reset will never be registered
and the loader can't change the PC in the case of images.

V2:
 - Add an entry to the maintainers file
 - Add some documentation
 - Perform bounds checking on the data_len
 - Register and unregister the reset in the realise/unrealise
Changes since RFC:
 - Add support for BE


Alistair Francis (2):
  generic-loader: Add a generic loader
  docs: Add a generic loader explanation document

 MAINTAINERS                      |   6 ++
 default-configs/arm-softmmu.mak  |   1 +
 docs/generic-loader.txt          |  21 ++++++
 hw/misc/Makefile.objs            |   2 +
 hw/misc/generic-loader.c         | 143 +++++++++++++++++++++++++++++++++++++++
 include/hw/misc/generic-loader.h |  50 ++++++++++++++
 6 files changed, 223 insertions(+)
 create mode 100644 docs/generic-loader.txt
 create mode 100644 hw/misc/generic-loader.c
 create mode 100644 include/hw/misc/generic-loader.h

-- 
2.5.0

             reply	other threads:[~2016-02-19 20:43 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-19 20:40 Alistair Francis [this message]
2016-02-19 20:40 ` [Qemu-devel] [PATCH v3 1/2] generic-loader: Add a generic loader Alistair Francis
2016-02-26 16:22   ` Peter Maydell
2016-03-01 23:56     ` Alistair Francis
2016-03-02  0:07       ` Peter Maydell
2016-03-02  1:07         ` Alistair Francis
2016-02-19 20:40 ` [Qemu-devel] [PATCH v3 2/2] docs: Add a generic loader explanation document Alistair Francis
2016-02-26 15:59   ` Peter Maydell
2016-02-29 23:05     ` Alistair Francis

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=cover.1455913505.git.alistair.francis@xilinx.com \
    --to=alistair.francis@xilinx.com \
    --cc=afaerber@suse.de \
    --cc=armbru@redhat.com \
    --cc=cov@codeaurora.org \
    --cc=crosthwaitepeter@gmail.com \
    --cc=pbonzini@redhat.com \
    --cc=peter.maydell@linaro.org \
    --cc=qemu-devel@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).