ARM: DRA7: AMxx: Make sure that the SPL always reads the configuration EEPROM

The bootrom may corrupt the area of SRAM used to store the ti_common_eeprom
structure. This patch makes sure that it's always read after a reset, even
if a valid MAGIC number is found in the SRAM.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

board/ti/common/board_detect.c

@@ -123,8 +123,10 @@ int __maybe_unused ti_i2c_eeprom_am_get(int bus_addr, int dev_addr)
 	struct ti_common_eeprom *ep;
 
 	ep = TI_EEPROM_DATA;
+#ifndef CONFIG_SPL_BUILD
 	if (ep->header == TI_EEPROM_HEADER_MAGIC)
-		goto already_read;
+		return 0; /* EEPROM has already been read */
+#endif
 
 	/* Initialize with a known bad marker for i2c fails.. */
 	ep->header = TI_DEAD_EEPROM_MAGIC;
@@ -157,7 +159,6 @@ int __maybe_unused ti_i2c_eeprom_am_get(int bus_addr, int dev_addr)
 	memcpy(ep->mac_addr, am_ep.mac_addr,
 	       TI_EEPROM_HDR_NO_OF_MAC_ADDR * TI_EEPROM_HDR_ETH_ALEN);
 
-already_read:
 	return 0;
 }
 
@@ -168,8 +169,10 @@ int __maybe_unused ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr)
 	struct ti_common_eeprom *ep;
 
 	ep = TI_EEPROM_DATA;
+#ifndef CONFIG_SPL_BUILD
 	if (ep->header == DRA7_EEPROM_HEADER_MAGIC)
-		goto already_read;
+		return 0; /* EEPROM has already been read */
+#endif
 
 	/* Initialize with a known bad marker for i2c fails.. */
 	ep->header = TI_DEAD_EEPROM_MAGIC;
@@ -202,7 +205,6 @@ int __maybe_unused ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr)
 	strlcpy(ep->config, dra7_ep.config, TI_EEPROM_HDR_CONFIG_LEN + 1);
 	ti_eeprom_string_cleanup(ep->config);
 
-already_read:
 	return 0;
 }