fcd55f7500
Several BIOSes (including most IBM BIOSes and many virtual machine BIOSes) do not provide detectable PnP support, but will use the BEV entry point for a PnP option ROM. On these semi-PnP BIOSes, iPXE will respond to the absence of detectable PnP support by hooking INT19, which disrupts the boot order. BIOSes that genuinely require hooking INT19 seem to be very rare nowadays. It may therefore be preferable to assume that the absence of detectable PnP support indicates a semi-PnP BIOS rather than a non-PnP BIOS. Change the default behaviour so that INT19 will never be hooked unless the compile-time option NONPNP_HOOK_INT19 is enabled. Leave the redundant PnP detection routine in-place to allow for debugging via the ROM banner line. Signed-off-by: Michael Brown <mcb30@ipxe.org> |
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| .. | ||
| defaults | ||
| local | ||
| .gitignore | ||
| config_ethernet.c | ||
| config_fc.c | ||
| config_infiniband.c | ||
| config_net80211.c | ||
| config_romprefix.c | ||
| config.c | ||
| console.h | ||
| defaults.h | ||
| general.h | ||
| ioapi.h | ||
| isa.h | ||
| nap.h | ||
| sanboot.h | ||
| serial.h | ||
| sideband.h | ||
| timer.h | ||
| umalloc.h | ||