wil6210: boot loader

Introduce boot loader. Instead of the operational firmware,
very small boot loader is burned to the on-board flash. Boot loader
initializes hardware upon reset, and prepares for low power mode.
Boot loader reports MAC address and detects radio chip connected.

Driver loads firmware only when bringing up interface. All information
required to set up network interface, most important is MAC address,
reported by the boot loader

The firmware composed of 2 files:
- wil6210.fw - firmware itself (compiled code + data)
- wil6210.board - board file (various board and radio dependent
  calibrations and parameters)

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/wil6210/wil6210.h

@@ -29,7 +29,8 @@ extern unsigned short rx_ring_overflow_thrsh;
 extern int agg_wsize;
 
 #define WIL_NAME "wil6210"
-#define WIL_FW_NAME "wil6210.fw"
+#define WIL_FW_NAME "wil6210.fw" /* code */
+#define WIL_FW2_NAME "wil6210.board" /* board & radio parameters */
 
 #define WIL_MAX_BUS_REQUEST_KBPS 800000 /* ~6.1Gbps */
 
@@ -120,6 +121,16 @@ struct RGF_ICR {
 	u32 IMC; /* Mask Clear, write 1 to clear */
 } __packed;
 
+struct RGF_BL {
+	u32 ready;		/* 0x880A3C bit [0] */
+#define BIT_BL_READY	BIT(0)
+	u32 version;		/* 0x880A40 version of the BL struct */
+	u32 rf_type;		/* 0x880A44 ID of the connected RF */
+	u32 baseband_type;	/* 0x880A48 ID of the baseband */
+	u8  mac_address[ETH_ALEN]; /* 0x880A4C permanent MAC */
+	u8 pad[2];
+} __packed;
+
 /* registers - FW addresses */
 #define RGF_USER_USAGE_1		(0x880004)
 #define RGF_USER_USAGE_6		(0x880018)
@@ -130,6 +141,7 @@ struct RGF_ICR {
 #define RGF_USER_MAC_CPU_0		(0x8801fc)
 	#define BIT_USER_MAC_CPU_MAN_RST	BIT(1) /* mac_cpu_man_rst */
 #define RGF_USER_USER_SCRATCH_PAD	(0x8802bc)
+#define RGF_USER_BL			(0x880A3C) /* Boot Loader */
 #define RGF_USER_FW_REV_ID		(0x880a8c) /* chip revision */
 #define RGF_USER_CLKS_CTL_0		(0x880abc)
 	#define BIT_USER_CLKS_CAR_AHB_SW_SEL	BIT(1) /* ref clk/PLL */
@@ -658,7 +670,7 @@ int wil_if_add(struct wil6210_priv *wil);
 void wil_if_remove(struct wil6210_priv *wil);
 int wil_priv_init(struct wil6210_priv *wil);
 void wil_priv_deinit(struct wil6210_priv *wil);
-int wil_reset(struct wil6210_priv *wil);
+int wil_reset(struct wil6210_priv *wil, bool no_fw);
 void wil_fw_error_recovery(struct wil6210_priv *wil);
 void wil_set_recovery_state(struct wil6210_priv *wil, int state);
 int wil_up(struct wil6210_priv *wil);