From 9a038702b1fc6ab867ebd3d6652ac3c7d04d6fff Mon Sep 17 00:00:00 2001 From: Arthur Hanson Rasmusson Date: Thu, 1 Oct 2026 01:06:14 -0400 Subject: gsp-phys: stage 3c FWSEC via VBIOS BIT image plus failure recovery --- kernel/gsp_phys_fwsec.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 kernel/gsp_phys_fwsec.h (limited to 'kernel/gsp_phys_fwsec.h') diff --git a/kernel/gsp_phys_fwsec.h b/kernel/gsp_phys_fwsec.h new file mode 100644 index 0000000..8e9d71d --- /dev/null +++ b/kernel/gsp_phys_fwsec.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef GSP_PHYS_FWSEC_H +#define GSP_PHYS_FWSEC_H + +#include +#include +#include + +#include "gsp_phys_boot.h" + +/* + * Real-GSP boot stage 3c: the FWSEC secure-verification run that carves + * WPR2/FRTS on the claimed physical GPU, plus the teardown path that removes + * WPR2 again before the device is handed back to the distribution driver. + * + * The stage is disabled by default (gsp_phys_fwsec=N); claim must be enabled + * too (gsp_phys_gpu=1 + gsp_phys_hazard_ack=1) and the boot layout (stage 3b) + * must have succeeded. Every step logs its register reads; failures abort and + * the recovery path is attempted immediately. + */ + +bool gsp_phys_fwsec_enabled(void); + +int gsp_phys_fwsec_run(struct gsp_phys_boot *boot, struct pci_dev *pdev, + void __iomem *bar0); + +/* + * Prepare the device for hand-back. If a FWSEC run programmed WPR2, run the + * teardown (FWSEC-SB + booter unload) while the module still owns BAR0. + * Returns nonzero when WPR2 could not be torn down: the caller must then + * refuse to rebind the distribution driver and keep the power-domain locks. + */ +int gsp_phys_fwsec_release(struct gsp_phys_boot *boot, struct pci_dev *pdev, + void __iomem *bar0); + +#endif /* GSP_PHYS_FWSEC_H */ -- cgit v1.2.3