habanalabs: support multiple types of firmwares

The driver now loads the firmware in two stages. For debugging purposes
we need to support situations where only the first stage firmware is
loaded.

Therefore, use a bitmask to determine which F/W is loaded
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

drivers/misc/habanalabs/common/firmware_if.c

@@ -574,6 +574,9 @@ int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg,
 	u32 status;
 	int rc;
 
+	if (!(hdev->fw_loading & FW_TYPE_BOOT_CPU))
+		return 0;
+
 	dev_info(hdev->dev, "Going to wait for device boot (up to %lds)\n",
 		cpu_timeout / USEC_PER_SEC);
 
@@ -631,6 +634,8 @@ int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg,
 		10000,
 		cpu_timeout);
 
+	dev_dbg(hdev->dev, "uboot status = %d\n", status);
+
 	/* Read U-Boot version now in case we will later fail */
 	hdev->asic_funcs->read_device_fw_version(hdev, FW_COMP_UBOOT);
 
@@ -640,8 +645,8 @@ int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg,
 		goto out;
 	}
 
-	if (!hdev->fw_loading) {
-		dev_info(hdev->dev, "Skip loading FW\n");
+	if (!(hdev->fw_loading & FW_TYPE_LINUX)) {
+		dev_info(hdev->dev, "Skip loading Linux F/W\n");
 		goto out;
 	}
 

drivers/misc/habanalabs/common/habanalabs.h

@@ -124,6 +124,18 @@ enum hl_fw_component {
 	FW_COMP_PREBOOT
 };
 
+/**
+ * enum hl_fw_types - F/W types to load
+ * @FW_TYPE_LINUX: Linux image for device CPU
+ * @FW_TYPE_BOOT_CPU: Boot image for device CPU
+ * @FW_TYPE_ALL_TYPES: Mask for all types
+ */
+enum hl_fw_types {
+	FW_TYPE_LINUX = 0x1,
+	FW_TYPE_BOOT_CPU = 0x2,
+	FW_TYPE_ALL_TYPES = (FW_TYPE_LINUX | FW_TYPE_BOOT_CPU)
+};
+
 /**
  * enum hl_queue_type - Supported QUEUE types.
  * @QUEUE_TYPE_NA: queue is not available.
@@ -1709,12 +1721,12 @@ struct hl_device {
 	u8				supports_cb_mapping;
 
 	/* Parameters for bring-up */
+	u64				fw_loading;
 	u8				mmu_enable;
 	u8				mmu_huge_page_opt;
 	u8				cpu_enable;
 	u8				reset_pcilink;
 	u8				cpu_queues_enable;
-	u8				fw_loading;
 	u8				pldm;
 	u8				axi_drain;
 	u8				sram_scrambler_enable;

drivers/misc/habanalabs/common/habanalabs_drv.c

@@ -241,6 +241,7 @@ static void set_driver_behavior_per_device(struct hl_device *hdev)
 	hdev->dram_scrambler_enable = 1;
 	hdev->bmc_enable = 1;
 	hdev->hard_reset_on_fw_events = 1;
+	hdev->fw_loading = FW_TYPE_ALL_TYPES;
 }
 
 /*