gsp-phys: decode the real FB size for the boot layout (stage 3b-prime)

1 files changed, 6 insertions, 3 deletions

diff --git a/kernel/gsp_phys_boot.h b/kernel/gsp_phys_boot.h
index 8ab203a..3f6ad6e 100644
--- a/kernel/gsp_phys_boot.h
+++ b/kernel/gsp_phys_boot.h
@@ -8,8 +8,10 @@
 /*
  * Real-GSP boot bring-up stage 3b: boot-argument DMA memory and the computed
  * WPR/FB layout. Allocated and filled by gsp_phys_boot.c while the module owns
- * the physical GPU. Stage 3b writes no device registers; the WPR metadata page
- * is filled in host memory only, ready for the later FWSEC/booter stages.
+ * the physical GPU. Stage 3b writes no device registers; the only device
+ * access is a read-only sample of the video-memory-size register in BAR0, and
+ * the WPR metadata page is filled in host memory only, ready for the later
+ * FWSEC/booter stages.
  */
 struct gsp_phys_boot {
 	bool initialized;
@@ -46,7 +48,8 @@ struct gsp_phys_boot {
 
 bool gsp_phys_layout_enabled(void);
 int gsp_phys_boot_layout_init(struct gsp_phys_boot *boot, struct pci_dev *pdev,
-			      u64 fw_image_size, resource_size_t usable_fb_size);
+			      void __iomem *bar0, u64 fw_image_size,
+			      resource_size_t bar1_len);
 void gsp_phys_boot_layout_fini(struct gsp_phys_boot *boot, struct pci_dev *pdev);
 
 #endif /* GSP_PHYS_BOOT_H */