From: Ben Warren <[email protected]>
This patch set adds the capability to write to QEMU across the DMA link and
adds a higher-level command to allocate a fw_cfg file and write its address
back to another, writeable fw_cfg file.
The initial use case is for Windows VM
Generation ID, where QEMU needs to change the contents of fw_cfg
data at runtime, while still having BIOS allocate and manage the memory.
v1->v2: separated patch into two functional units
changed so writes only occur over the DMA interface
fixed coding style
removed change to romfile struct definition (removed new write_back
method)
Ben Warren (2):
QEMU DMA: Add DMA write capability
QEMU fw_cfg: Add command to write back address of file
src/fw/paravirt.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
src/fw/paravirt.h | 3 +++
src/fw/romfile_loader.c | 38 ++++++++++++++++++++++++++++++++++++++
src/fw/romfile_loader.h | 23 ++++++++++++++++++++---
4 files changed, 110 insertions(+), 3 deletions(-)
--
2.7.4
_______________________________________________
SeaBIOS mailing list
[email protected]
https://www.coreboot.org/mailman/listinfo/seabios
