drm/nouveau/secboot: add support for SEC LS firmware

Support running a message queue firmware on SEC.
Signed-off-by: NAlexandre Courbot <acourbot@nvidia.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvkm/engine/falcon.h

@@ -10,6 +10,7 @@ enum nvkm_falcon_dmaidx {
 	FALCON_DMAIDX_PHYS_VID		= 2,
 	FALCON_DMAIDX_PHYS_SYS_COH	= 3,
 	FALCON_DMAIDX_PHYS_SYS_NCOH	= 4,
+	FALCON_SEC2_DMAIDX_UCODE	= 6,
 };
 
 struct nvkm_falcon {

drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r361.c

@@ -25,6 +25,7 @@
 #include <engine/falcon.h>
 #include <core/msgqueue.h>
 #include <subdev/pmu.h>
+#include <engine/sec2.h>
 
 /**
  * struct acr_r361_flcn_bl_desc - DMEM bootloader descriptor
@@ -169,6 +170,46 @@ acr_r361_ls_pmu_func = {
 	.post_run = acr_ls_pmu_post_run,
 };
 
+static void
+acr_r361_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_r361_pmu_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->dma_idx = FALCON_SEC2_DMAIDX_UCODE;
+	desc->code_dma_base = u64_to_flcn64(addr_code);
+	desc->total_code_size = pdesc->app_size;
+	desc->code_size_to_load = 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->overlay_dma_base = u64_to_flcn64(addr_code);
+	desc->argc = 1;
+	/* args are stored at the beginning of EMEM */
+	desc->argv = 0x01000000;
+}
+
+const struct acr_r352_ls_func
+acr_r361_ls_sec2_func = {
+	.load = acr_ls_ucode_load_sec2,
+	.generate_bl_desc = acr_r361_generate_sec2_bl_desc,
+	.bl_desc_size = sizeof(struct acr_r361_pmu_bl_desc),
+	.post_run = acr_ls_sec2_post_run,
+};
+
+
 const struct acr_r352_func
 acr_r361_func = {
 	.fixup_hs_desc = acr_r352_fixup_hs_desc,
@@ -181,6 +222,7 @@ acr_r361_func = {
 		[NVKM_SECBOOT_FALCON_FECS] = &acr_r361_ls_fecs_func,
 		[NVKM_SECBOOT_FALCON_GPCCS] = &acr_r361_ls_gpccs_func,
 		[NVKM_SECBOOT_FALCON_PMU] = &acr_r361_ls_pmu_func,
+		[NVKM_SECBOOT_FALCON_SEC2] = &acr_r361_ls_sec2_func,
 	},
 };
 

drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode.h

@@ -151,5 +151,7 @@ int acr_ls_ucode_load_fecs(const struct nvkm_subdev *, struct ls_ucode_img *);
 int acr_ls_ucode_load_gpccs(const struct nvkm_subdev *, struct ls_ucode_img *);
 int acr_ls_ucode_load_pmu(const struct nvkm_subdev *, struct ls_ucode_img *);
 void acr_ls_pmu_post_run(const struct nvkm_acr *, const struct nvkm_secboot *);
+int acr_ls_ucode_load_sec2(const struct nvkm_subdev *, struct ls_ucode_img *);
+void acr_ls_sec2_post_run(const struct nvkm_acr *, const struct nvkm_secboot *);
 
 #endif

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

@@ -27,6 +27,7 @@
 #include <core/firmware.h>
 #include <core/msgqueue.h>
 #include <subdev/pmu.h>
+#include <engine/sec2.h>
 
 /**
  * acr_ls_ucode_load_msgqueue - load and prepare a ucode img for a msgqueue fw
@@ -115,3 +116,34 @@ acr_ls_pmu_post_run(const struct nvkm_acr *acr, const struct nvkm_secboot *sb)
 
 	acr_ls_msgqueue_post_run(pmu->queue, pmu->falcon, addr_args);
 }
+
+int
+acr_ls_ucode_load_sec2(const struct nvkm_subdev *subdev,
+		       struct ls_ucode_img *img)
+{
+	struct nvkm_sec2 *sec = subdev->device->sec2;
+	int ret;
+
+	ret = acr_ls_ucode_load_msgqueue(subdev, "sec2", img);
+	if (ret)
+		return ret;
+
+	/* Allocate the PMU queue corresponding to the FW version */
+	ret = nvkm_msgqueue_new(img->ucode_desc.app_version, sec->falcon,
+				&sec->queue);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+void
+acr_ls_sec2_post_run(const struct nvkm_acr *acr, const struct nvkm_secboot *sb)
+{
+	struct nvkm_device *device = sb->subdev.device;
+	struct nvkm_sec2 *sec = device->sec2;
+	/* on SEC arguments are always at the beginning of EMEM */
+	u32 addr_args = 0x01000000;
+
+	acr_ls_msgqueue_post_run(sec->queue, sec->falcon, addr_args);
+}