drm/nouveau/secboot/r370: implement support for booting LS SEC2 ucode

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Gourav Samaiya <gsamaiya@nvidia.com>

drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r370.c

@@ -65,6 +65,44 @@ acr_r370_ls_gpccs_func = {
 	.lhdr_flags = LSF_FLAG_FORCE_PRIV_LOAD,
 };
 
+static void
+acr_r370_generate_sec2_bl_desc(const struct nvkm_acr *acr,
+			       const struct ls_ucode_img *img, u64 wpr_addr,
+			       void *_desc)
+{
+	const struct ls_ucode_img_desc *pdesc = &img->ucode_desc;
+	const struct nvkm_sec2 *sec = acr->subdev->device->sec2;
+	struct acr_r370_flcn_bl_desc *desc = _desc;
+	u64 base, addr_code, addr_data;
+	u32 addr_args;
+
+	base = wpr_addr + img->ucode_off + pdesc->app_start_offset;
+	/* For some reason we should not add app_resident_code_offset here */
+	addr_code = base;
+	addr_data = base + pdesc->app_resident_data_offset;
+	addr_args = sec->falcon->data.limit;
+	addr_args -= NVKM_MSGQUEUE_CMDLINE_SIZE;
+
+	desc->ctx_dma = FALCON_SEC2_DMAIDX_UCODE;
+	desc->code_dma_base = u64_to_flcn64(addr_code);
+	desc->non_sec_code_off = pdesc->app_resident_code_offset;
+	desc->non_sec_code_size = pdesc->app_resident_code_size;
+	desc->code_entry_point = pdesc->app_imem_entry;
+	desc->data_dma_base = u64_to_flcn64(addr_data);
+	desc->data_size = pdesc->app_resident_data_size;
+	desc->argc = 1;
+	/* args are stored at the beginning of EMEM */
+	desc->argv = 0x01000000;
+}
+
+const struct acr_r352_ls_func
+acr_r370_ls_sec2_func = {
+	.load = acr_ls_ucode_load_sec2,
+	.generate_bl_desc = acr_r370_generate_sec2_bl_desc,
+	.bl_desc_size = sizeof(struct acr_r370_flcn_bl_desc),
+	.post_run = acr_ls_sec2_post_run,
+};
+
 void
 acr_r370_generate_hs_bl_desc(const struct hsf_load_header *hdr, void *_bl_desc,
 			     u64 offset)
@@ -92,6 +130,7 @@ acr_r370_func = {
 	.ls_fill_headers = acr_r367_ls_fill_headers,
 	.ls_write_wpr = acr_r367_ls_write_wpr,
 	.ls_func = {
+		[NVKM_SECBOOT_FALCON_SEC2] = &acr_r370_ls_sec2_func,
 		[NVKM_SECBOOT_FALCON_FECS] = &acr_r370_ls_fecs_func,
 		[NVKM_SECBOOT_FALCON_GPCCS] = &acr_r370_ls_gpccs_func,
 	},