TQM85xx: Support for Spansion 'N' type flashes added

The 'N' type Spansion flashes (S29GLxxxN series) have bigger sectors,
than the formerly used 'M' types (S29GLxxxM series), so the flash layout
needs to be changed -> new start address of the environment. The macro
definition CONFIG_TQM_FLASH_N_TYPE is undefined by default and must be
defined for boards with 'N' type flashes.

Signed-off-by: Martin Krause <martin.krause@tqs.de>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

include/configs/TQM85xx.h

@@ -108,6 +108,13 @@
 #define CONFIG_DDR_DEFAULT_CL	30		/* CAS latency 3	*/
 #endif /* CONFIG_TQM8541 || CONFIG_TQM8555 */
 
+/*
+ * Old TQM85xx boards have 'M' type Spansion Flashes from the S29GLxxxM
+ * series while new boards have 'N' type Flashes from the S29GLxxxN
+ * series, which have bigger sectors: 2 x 128 instead of 2 x 64 KB.
+ */
+#undef CONFIG_TQM_FLASH_N_TYPE
+
 /*
  * Flash on the Local Bus
  */
@@ -151,7 +158,7 @@
 #define CFG_INIT_SP_OFFSET	CFG_GBL_DATA_OFFSET
 
 #define CFG_MONITOR_LEN		(256 * 1024)	/* Reserve 256kB for Mon */
-#define CFG_MALLOC_LEN		(128 * 1024)	/* Reserved for malloc	*/
+#define CFG_MALLOC_LEN		(256 * 1024)	/* Reserved for malloc	*/
 
 /* Serial Port */
 #if defined(CONFIG_TQM8560)
@@ -351,10 +358,15 @@
  * Environment
  */
 #define CFG_ENV_IS_IN_FLASH	1
-#define CFG_ENV_ADDR		(CFG_MONITOR_BASE - 0x20000)
-#define CFG_ENV_SECT_SIZE	0x20000	/* 128K(one sector) for env	*/
+
+#ifdef CONFIG_TQM_FLASH_N_TYPE
+#define CFG_ENV_SECT_SIZE	0x40000 /* 256K (one sector) for env	*/
+#else /* !CONFIG_TQM_FLASH_N_TYPE */
+#define CFG_ENV_SECT_SIZE	0x20000 /* 128K (one sector) for env	*/
+#endif /* CONFIG_TQM_FLASH_N_TYPE */
+#define CFG_ENV_ADDR		(CFG_MONITOR_BASE - CFG_ENV_SECT_SIZE)
 #define CFG_ENV_SIZE		0x2000
-#define CFG_ENV_ADDR_REDUND	(CFG_ENV_ADDR-CFG_ENV_SECT_SIZE)
+#define CFG_ENV_ADDR_REDUND	(CFG_ENV_ADDR - CFG_ENV_SECT_SIZE)
 #define CFG_ENV_SIZE_REDUND	(CFG_ENV_SIZE)
 
 #define CONFIG_LOADS_ECHO	1	/* echo on for serial download	*/