Hello Kyösti Mälkki, Aaron Durbin, Subrata Banik, Jeremy Soller, Shelley Chen, build bot (Jenkins), Patrick Georgi, Furquan Shaikh, Lean Sheng Tan, Philipp Deppenwiese, Nico Huber, Martin Roth,
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/36221
to look at the new patch set (#9).
Change subject: Add configurable ramstage support for minimal PCI scanning ......................................................................
Add configurable ramstage support for minimal PCI scanning
This CL has changes that allow us to enable a configurable ramstage, and one change that allows us to minimize PCI scanning. Minimal scanning is a frequently requested feature.
To enable it, we add two new variables to src/Kconfig CONFIGURABLE_RAMSTAGE is the overall variable controlling other options for minimizing the ramstage.
MINIMAL_PCI_SCANNING is how we indicate we wish to enable minimal PCI scanning.
Some devices must be scanned in all cases, such as 0:0.0.
To indicate which devices we must scan, we add a new mandatory keyword to sconfig
It is used in place of on, off, or hidden, and indicates a device is enabled and mandatory. Mandatory devices are always scanned. When MINIMAL_PCI_SCANNING is enabled, ONLY mandatory devices are scanned.
We further add support in src/device/pci_device.c to manage both MINIMAL_PCI_SCANNING and mandatory devices.
Finally, to show how this works in practice, we add mandatory keywords to 3 devices on the qemu-q35.
This is tested and working on the qemu-q35 target.
Change-Id: I2073d9f8e9297c2b02530821ebb634ea2a5c758e Signed-off-by: Ronald G. Minnich rminnich@gmail.com --- M src/Kconfig M src/device/pci_device.c M src/include/device/device.h M src/mainboard/emulation/qemu-q35/devicetree.cb M util/sconfig/lex.yy.c_shipped M util/sconfig/main.c M util/sconfig/sconfig.h M util/sconfig/sconfig.l M util/sconfig/sconfig.tab.c_shipped M util/sconfig/sconfig.tab.h_shipped M util/sconfig/sconfig.y 11 files changed, 385 insertions(+), 353 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/21/36221/9