tg3: Add 5720 NVRAM decoding

The 5720 implements its own NVRAM pin strapping scheme.  This patch adds
the required support.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 45605f2..169a6ce 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -1827,6 +1827,38 @@
 #define  FLASH_5717VENDOR_ATMEL_45USPT	 0x03400000
 #define  FLASH_5717VENDOR_ST_25USPT	 0x03400002
 #define  FLASH_5717VENDOR_ST_45USPT	 0x03400001
+#define  FLASH_5720_EEPROM_HD		 0x00000001
+#define  FLASH_5720_EEPROM_LD		 0x00000003
+#define  FLASH_5720VENDOR_M_ATMEL_DB011D 0x01000000
+#define  FLASH_5720VENDOR_M_ATMEL_DB021D 0x01000002
+#define  FLASH_5720VENDOR_M_ATMEL_DB041D 0x01000001
+#define  FLASH_5720VENDOR_M_ATMEL_DB081D 0x01000003
+#define  FLASH_5720VENDOR_M_ST_M25PE10	 0x02000000
+#define  FLASH_5720VENDOR_M_ST_M25PE20	 0x02000002
+#define  FLASH_5720VENDOR_M_ST_M25PE40	 0x02000001
+#define  FLASH_5720VENDOR_M_ST_M25PE80	 0x02000003
+#define  FLASH_5720VENDOR_M_ST_M45PE10	 0x03000000
+#define  FLASH_5720VENDOR_M_ST_M45PE20	 0x03000002
+#define  FLASH_5720VENDOR_M_ST_M45PE40	 0x03000001
+#define  FLASH_5720VENDOR_M_ST_M45PE80	 0x03000003
+#define  FLASH_5720VENDOR_A_ATMEL_DB011B 0x01800000
+#define  FLASH_5720VENDOR_A_ATMEL_DB021B 0x01800002
+#define  FLASH_5720VENDOR_A_ATMEL_DB041B 0x01800001
+#define  FLASH_5720VENDOR_A_ATMEL_DB011D 0x01c00000
+#define  FLASH_5720VENDOR_A_ATMEL_DB021D 0x01c00002
+#define  FLASH_5720VENDOR_A_ATMEL_DB041D 0x01c00001
+#define  FLASH_5720VENDOR_A_ATMEL_DB081D 0x01c00003
+#define  FLASH_5720VENDOR_A_ST_M25PE10	 0x02800000
+#define  FLASH_5720VENDOR_A_ST_M25PE20	 0x02800002
+#define  FLASH_5720VENDOR_A_ST_M25PE40	 0x02800001
+#define  FLASH_5720VENDOR_A_ST_M25PE80	 0x02800003
+#define  FLASH_5720VENDOR_A_ST_M45PE10	 0x02c00000
+#define  FLASH_5720VENDOR_A_ST_M45PE20	 0x02c00002
+#define  FLASH_5720VENDOR_A_ST_M45PE40	 0x02c00001
+#define  FLASH_5720VENDOR_A_ST_M45PE80	 0x02c00003
+#define  FLASH_5720VENDOR_ATMEL_45USPT	 0x03c00000
+#define  FLASH_5720VENDOR_ST_25USPT	 0x03c00002
+#define  FLASH_5720VENDOR_ST_45USPT	 0x03c00001
 #define  NVRAM_CFG1_5752PAGE_SIZE_MASK	 0x70000000
 #define  FLASH_5752PAGE_SIZE_256	 0x00000000
 #define  FLASH_5752PAGE_SIZE_512	 0x10000000
@@ -3060,6 +3092,7 @@
 
 	int				nvram_lock_cnt;
 	u32				nvram_size;
+#define TG3_NVRAM_SIZE_2KB		0x00000800
 #define TG3_NVRAM_SIZE_64KB		0x00010000
 #define TG3_NVRAM_SIZE_128KB		0x00020000
 #define TG3_NVRAM_SIZE_256KB		0x00040000
@@ -3075,6 +3108,9 @@
 #define JEDEC_SAIFUN			0x4f
 #define JEDEC_SST			0xbf
 
+#define ATMEL_AT24C02_CHIP_SIZE		TG3_NVRAM_SIZE_2KB
+#define ATMEL_AT24C02_PAGE_SIZE		(8)
+
 #define ATMEL_AT24C64_CHIP_SIZE		TG3_NVRAM_SIZE_64KB
 #define ATMEL_AT24C64_PAGE_SIZE		(32)