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v2 survivability breadcrumbs introduces a new mode called SPI Flash Descriptor Override mode (FDO). This is enabled by PCODE when MEI itself fails and firmware cannot be updated via MEI using igsc. This mode provides the ability to update the firmware directly via SPI driver. Xe KMD initializes the nvm aux driver if FDO mode is enabled. Userspace should check FDO mode entry in survivability info sysfs before using the SPI driver to update firmware. /sys/bus/pci/devices/<device>/survivability_info/fdo_mode v2 also supports survivability mode for critical boot errors. Signed-off-by: Riana Tauro <riana.tauro@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patch.msgid.link/20251208084539.3652902-6-riana.tauro@intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>