drm/nouveau/secboot: add lazy-bootstrap flag

When the PMU firmware is present, the falcons it manages need to have
the lazy-bootstrap flag of their WPR header set so the ACR does not boot
them. Add support for this.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c
index d4f0423..421cf78 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c
@@ -241,6 +241,10 @@ acr_r352_ls_img_fill_headers(struct acr_r352 *acr,
        whdr->bootstrap_owner = acr->base.boot_falcon;
        whdr->status = LSF_IMAGE_STATUS_COPY;
 
+       /* Skip bootstrapping falcons started by someone else than ACR */
+       if (acr->lazy_bootstrap & BIT(_img->falcon_id))
+               whdr->lazy_bootstrap = 1;
+
        /* Align, save off, and include an LSB header size */
        offset = ALIGN(offset, LSF_LSB_HEADER_ALIGN);
        whdr->lsb_offset = offset;

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.h b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.h
index f335dce..ad5923b 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.h
@@ -223,6 +223,9 @@ struct acr_r352 {
        /* Firmware already loaded? */
        bool firmware_ok;
 
+       /* Falcons to lazy-bootstrap */
+       u32 lazy_bootstrap;
+
        /* To keep track of the state of all managed falcons */
        enum {
                /* In non-secure state, no firmware loaded, no privileges*/