All,
This is my first time submitting a patch to SeaBIOS for
review/inclusion; I assume this list is the correct initial contact?
I have run into several situations where it is neccessary to execute
only the relevant option ROMs contained in CBFS while ignoring any
option ROM binary code present on PCI/PCIe devices; e.g. when the option
ROM provided by the manufacturer is buggy but a FOSS replacement is
available that works properly.
This patch adds an option to only execute option ROMs contained in CBFS.
Tested on ASUS KFSN4-DRE with iPXE ROMs built in to CBFS; with this
option set the on-board network ROMs were ignored while the iPXE ROMs
executed normally.
--
Timothy Pearson
Raptor Engineering
+1 (415) 727-8645
http://www.raptorengineeringinc.com
diff --git a/src/Kconfig b/src/Kconfig
index 45ca59c..988bbb9 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -355,6 +355,17 @@ menu "BIOS interfaces"
default y
help
Support finding and running option roms during POST.
+ config CBFS_OPTIONROMS_ONLY
+ depends on OPTIONROMS
+ bool "Only execute option ROMs stored in CBFS"
+ default "n"
+ help
+ Only execute option ROMs that are stored in CBFS.
+ Do not scan PCI bus for option ROMs. This is useful
+ if one or more of your PCI devices crash/hang SeaBIOS
+ when executing their option ROMs, but you need to use
+ one or more option ROMs (such as SeaVGABIOS) that were
+ loaded into CBFS.
config OPTIONROMS_DEPLOYED
depends on OPTIONROMS && QEMU
bool "Option roms are already at 0xc0000-0xf0000"
diff --git a/src/optionroms.c b/src/optionroms.c
index 93d9d2f..fbcb6ca 100644
--- a/src/optionroms.c
+++ b/src/optionroms.c
@@ -253,6 +253,9 @@ copy_rom(struct rom_header *rom)
static struct rom_header *
map_pcirom(struct pci_device *pci)
{
+ if (CONFIG_CBFS_OPTIONROMS_ONLY)
+ return NULL;
+
u16 bdf = pci->bdf;
dprintf(6, "Attempting to map option rom on dev %02x:%02x.%x\n"
, pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf));
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