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[Qemu-devel] [RFC 0/7] fw_cfg dma interface
From: |
Marc Marí |
Subject: |
[Qemu-devel] [RFC 0/7] fw_cfg dma interface |
Date: |
Tue, 21 Jul 2015 18:03:39 +0200 |
Work done by Gerd Hoffmann for ARM. Extended to be used in x86 platforms
These patches, with the support in SeaBIOS (patches in the SeaBIOS
mailing list) make the Linux kernel setup and boot approximately 10x
faster.
TODO:
* Optimizations. For example, use memcpy instead of a loop if the
transaction is big
* Is 0xfef00000 a good address? Is there any better address? Is it
possible to not make it hardcoded (and can be read by the BIOS)?
* Maybe have both DMA and IO interfaces enabled, to improve
compatibility?
Gabriel L. Somlo (1):
fw_cfg: document fw_cfg_modify_iXX() update functions
Gerd Hoffmann (4):
fw_cfg dma interface
fw_cfg dma: adapt to vmstate changes
enable fw_cfg dma for arm virt
fw_cfg file sort
Marc Marí (2):
Add offset register to fw_cfg DMA interface
fw_cfg DMA for x86
docs/specs/fw_cfg.txt | 52 ++++++++++++
hw/arm/virt.c | 11 ++-
hw/i386/pc.c | 21 ++++-
hw/i386/pc_piix.c | 25 +++++-
hw/i386/pc_q35.c | 26 +++++-
hw/nvram/fw_cfg.c | 199 +++++++++++++++++++++++++++++++++++++++++++---
include/hw/i386/pc.h | 1 +
include/hw/nvram/fw_cfg.h | 5 +-
8 files changed, 318 insertions(+), 22 deletions(-)
--
2.4.3