Patches by Stephan Linz, 30 Jan 2004:

1: - board/altera/common/flash.c:flash_erase():
     o allow interrupts befor get_timer() call
     o check-up each erased sector and avoid unexpected timeouts
   - board/altera/dk1c20/dk1s10.c:board_early_init_f():
     o enclose sevenseg_set() in cpp condition
   - remove the ASMI configuration for DK1S10_standard_32 (never present)
   - fix some typed in mistakes in the NIOS documentation
2: - split DK1C20 configuration into several header files:
     o two new files for each NIOS CPU description
     o U-Boot related part is remaining in DK1C20.h
3: - split DK1S10 configuration into several header files:
     o two new files for each NIOS CPU description
     o U-Boot related part is remaining in DK1S10.h
4: - Add support for the Microtronix Linux Development Kit
     NIOS CPU configuration at the Altera Nios Development Kit,
     Stratix Edition (DK-1S10)
5: - Add documentation for the Altera Nios Development Kit,
     Stratix Edition (DK-1S10)
6: - Add support for the Nios Serial Peripharel Interface (SPI)
     (master only)
7: - Add support for the common U-Boot SPI framework at
     RTC driver DS1306

1 files changed, 76 insertions, 276 deletions

diff --git a/include/configs/DK1S10.h b/include/configs/DK1S10.h
index bd7ded5..835c7a2 100644
--- a/include/configs/DK1S10.h
+++ b/include/configs/DK1S10.h
@@ -24,264 +24,19 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
-/*
- * NIOS CPU configuration.
+/***********************************************************************
+ * Include the whole NIOS CPU configuration.
  *
- * Here we must define CPU dependencies. Any unsupported option have to
- * be defined with zero, example CPU without data cache / OCI:
+ * !!! HAVE TO BE HERE !!! DON'T MOVE THIS PART !!!
  *
- *	#define	CFG_NIOS_CPU_ICACHE	4096
- *	#define	CFG_NIOS_CPU_DCACHE	0
- *	#define	CFG_NIOS_CPU_OCI_BASE	0
- *	#define	CFG_NIOS_CPU_OCI_SIZE	0
- */
+ ***********************************************************************/
 
 #if	defined(CONFIG_NIOS_SAFE_32)
-
-/* TODO */
-
+#include <configs/DK1S10_safe_32.h>
 #elif	defined(CONFIG_NIOS_STANDARD_32)
-
-/* CPU core */
-#define	CFG_NIOS_CPU_CLK	50000000	/* NIOS CPU clock	*/
-#define	CFG_NIOS_CPU_ICACHE	(4 * 1024)	/* instruction cache	*/
-#define	CFG_NIOS_CPU_DCACHE	(4 * 1024)	/* data cache		*/
-#define	CFG_NIOS_CPU_REG_NUMS	256		/* number of register	*/
-#define	CFG_NIOS_CPU_MUL	0		/* 16x16 MUL:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_MSTEP	1		/* 16x16 MSTEP:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_STACK	0x008fff00	/* stack top	addr	*/
-#define	CFG_NIOS_CPU_VEC_BASE	0x008fff00	/* IRQ vectors	addr	*/
-#define	CFG_NIOS_CPU_VEC_SIZE	256		/*		size	*/
-#define	CFG_NIOS_CPU_VEC_NUMS	64		/*		numbers	*/
-#define	CFG_NIOS_CPU_RST_VECT	0x00920000	/* RESET vector	addr	*/
-#define	CFG_NIOS_CPU_DBG_CORE	0		/* CPU debug:	no(0)	*/
-						/*		yes(1)	*/
-
-/* on-chip extensions */
-#define	CFG_NIOS_CPU_RAM_BASE	0x00900000	/* on chip RAM	addr	*/
-#define	CFG_NIOS_CPU_RAM_SIZE	(64 * 1024)	/* 64 KB	size	*/
-
-#define	CFG_NIOS_CPU_ROM_BASE	0x00920000	/* on chip ROM	addr	*/
-#define	CFG_NIOS_CPU_ROM_SIZE	(2 * 1024)	/*  2 KB	size	*/
-
-#define	CFG_NIOS_CPU_OCI_BASE	0x00920800	/* OCI core	addr	*/
-#define	CFG_NIOS_CPU_OCI_SIZE	256		/*		size	*/
-
-/* timer */
-#define	CFG_NIOS_CPU_TIMER_NUMS	2		/* number of timer	*/
-
-#define	CFG_NIOS_CPU_TIMER0	0x00920940	/* TIMER0	addr	*/
-#define	CFG_NIOS_CPU_TIMER0_IRQ	16		/*		IRQ	*/
-#define	CFG_NIOS_CPU_TIMER0_PER	1000		/*  periode	usec	*/
-#define	CFG_NIOS_CPU_TIMER0_AR	0		/*  always run:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_TIMER0_FP	0		/*  fixed per:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_TIMER0_SS	1		/*  snaphot:	no(0)	*/
-						/*		yes(1)	*/
-
-#define	CFG_NIOS_CPU_TIMER1	0x009209e0	/* TIMER1	addr	*/
-#define	CFG_NIOS_CPU_TIMER1_IRQ	50		/*		IRQ	*/
-#define	CFG_NIOS_CPU_TIMER1_PER	10000		/*  periode	usec	*/
-#define	CFG_NIOS_CPU_TIMER1_AR	1		/*  always run:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_TIMER1_FP	1		/*  fixed per:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_TIMER1_SS	0		/*  snaphot:	no(0)	*/
-						/*		yes(1)	*/
-
-/* serial i/o */
-#define	CFG_NIOS_CPU_UART_NUMS	1		/* number of uarts	*/
-
-#define	CFG_NIOS_CPU_UART0	0x00920900	/* UART0	addr	*/
-#define	CFG_NIOS_CPU_UART0_IRQ	25		/*		IRQ	*/
-#define	CFG_NIOS_CPU_UART0_BR	115200		/*  baudrate	var(0)	*/
-#define	CFG_NIOS_CPU_UART0_DB	8		/*  data bit		*/
-#define	CFG_NIOS_CPU_UART0_SB	1		/*  stop bit		*/
-#define	CFG_NIOS_CPU_UART0_PA	0		/*  parity	none(0)	*/
-						/*		odd(1)	*/
-						/*		even(2)	*/
-#define	CFG_NIOS_CPU_UART0_HS	0		/*  handshake:	no(0)	*/
-						/*		crts(1)	*/
-#define	CFG_NIOS_CPU_UART0_EOP	0		/*  eop reg:	no(0)	*/
-						/*		yes(1)	*/
-
-/* parallel i/o */
-#define	CFG_NIOS_CPU_PIO_NUMS	8		/* number of parports	*/
-
-#define	CFG_NIOS_CPU_PIO0	0x00920960	/* PIO0		addr	*/
-#define	CFG_NIOS_CPU_PIO0_IRQ	40		/*		IRQ	*/
-#define	CFG_NIOS_CPU_PIO0_BITS	4		/*  number  of  bits	*/
-#define	CFG_NIOS_CPU_PIO0_TYPE	2		/*  io type:	tris(0)	*/
-						/*		out(1)	*/
-						/*		in(2)	*/
-#define	CFG_NIOS_CPU_PIO0_CAP	1		/*  capture:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_PIO0_EDGE	3		/*  edge type:	none(0)	*/
-						/*		fall(1)	*/
-						/*		rise(2)	*/
-						/*		any(3)	*/
-#define	CFG_NIOS_CPU_PIO0_ITYPE	2		/*  IRQ type:	none(0)	*/
-						/*		level(1)*/
-						/*		edge(2)	*/
-
-#define	CFG_NIOS_CPU_PIO1	0x00920970	/* PIO1		addr	*/
-#undef	CFG_NIOS_CPU_PIO1_IRQ			/*		w/o IRQ	*/
-#define	CFG_NIOS_CPU_PIO1_BITS	11		/*  number  of  bits	*/
-#define	CFG_NIOS_CPU_PIO1_TYPE	0		/*  io type:	tris(0)	*/
-						/*		out(1)	*/
-						/*		in(2)	*/
-#define	CFG_NIOS_CPU_PIO1_CAP	0		/*  capture:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_PIO1_EDGE	0		/*  edge type:	none(0)	*/
-						/*		fall(1)	*/
-						/*		rise(2)	*/
-						/*		any(3)	*/
-#define	CFG_NIOS_CPU_PIO1_ITYPE	0		/*  IRQ type:	none(0)	*/
-						/*		level(1)*/
-						/*		edge(2)	*/
-
-#define	CFG_NIOS_CPU_PIO2	0x00920980	/* PIO2		addr	*/
-#undef	CFG_NIOS_CPU_PIO2_IRQ			/*		w/o IRQ	*/
-#define	CFG_NIOS_CPU_PIO2_BITS	8		/*  number  of  bits	*/
-#define	CFG_NIOS_CPU_PIO2_TYPE	1		/*  io type:	tris(0)	*/
-						/*		out(1)	*/
-						/*		in(2)	*/
-#define	CFG_NIOS_CPU_PIO2_CAP	0		/*  capture:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_PIO2_EDGE	0		/*  edge type:	none(0)	*/
-						/*		fall(1)	*/
-						/*		rise(2)	*/
-						/*		any(3)	*/
-#define	CFG_NIOS_CPU_PIO2_ITYPE	0		/*  IRQ type:	none(0)	*/
-						/*		level(1)*/
-						/*		edge(2)	*/
-
-#define	CFG_NIOS_CPU_PIO3	0x00920990	/* PIO3		addr	*/
-#undef	CFG_NIOS_CPU_PIO3_IRQ			/*		w/o IRQ	*/
-#define	CFG_NIOS_CPU_PIO3_BITS	16		/*  number  of  bits	*/
-#define	CFG_NIOS_CPU_PIO3_TYPE	1		/*  io type:	tris(0)	*/
-						/*		out(1)	*/
-						/*		in(2)	*/
-#define	CFG_NIOS_CPU_PIO3_CAP	0		/*  capture:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_PIO3_EDGE	0		/*  edge type:	none(0)	*/
-						/*		fall(1)	*/
-						/*		rise(2)	*/
-						/*		any(3)	*/
-#define	CFG_NIOS_CPU_PIO3_ITYPE	0		/*  IRQ type:	none(0)	*/
-						/*		level(1)*/
-						/*		edge(2)	*/
-
-#define	CFG_NIOS_CPU_PIO4	0x009209a0	/* PIO4		addr	*/
-#undef	CFG_NIOS_CPU_PIO4_IRQ			/*		w/o IRQ	*/
-#define	CFG_NIOS_CPU_PIO4_BITS	1		/*  number  of  bits	*/
-#define	CFG_NIOS_CPU_PIO4_TYPE	0		/*  io type:	tris(0)	*/
-						/*		out(1)	*/
-						/*		in(2)	*/
-#define	CFG_NIOS_CPU_PIO4_CAP	0		/*  capture:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_PIO4_EDGE	0		/*  edge type:	none(0)	*/
-						/*		fall(1)	*/
-						/*		rise(2)	*/
-						/*		any(3)	*/
-#define	CFG_NIOS_CPU_PIO4_ITYPE	0		/*  IRQ type:	none(0)	*/
-						/*		level(1)*/
-						/*		edge(2)	*/
-
-#define	CFG_NIOS_CPU_PIO5	0x009209b0	/* PIO5		addr	*/
-#define	CFG_NIOS_CPU_PIO5_IRQ	35		/*		IRQ	*/
-#define	CFG_NIOS_CPU_PIO5_BITS	1		/*  number  of  bits	*/
-#define	CFG_NIOS_CPU_PIO5_TYPE	2		/*  io type:	tris(0)	*/
-						/*		out(1)	*/
-						/*		in(2)	*/
-#define	CFG_NIOS_CPU_PIO5_CAP	1		/*  capture:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_PIO5_EDGE	3		/*  edge type:	none(0)	*/
-						/*		fall(1)	*/
-						/*		rise(2)	*/
-						/*		any(3)	*/
-#define	CFG_NIOS_CPU_PIO5_ITYPE	2		/*  IRQ type:	none(0)	*/
-						/*		level(1)*/
-						/*		edge(2)	*/
-
-#define	CFG_NIOS_CPU_PIO6	0x009209c0	/* PIO6		addr	*/
-#undef	CFG_NIOS_CPU_PIO6_IRQ			/*		w/o IRQ	*/
-#define	CFG_NIOS_CPU_PIO6_BITS	1		/*  number  of  bits	*/
-#define	CFG_NIOS_CPU_PIO6_TYPE	1		/*  io type:	tris(0)	*/
-						/*		out(1)	*/
-						/*		in(2)	*/
-#define	CFG_NIOS_CPU_PIO6_CAP	0		/*  capture:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_PIO6_EDGE	0		/*  edge type:	none(0)	*/
-						/*		fall(1)	*/
-						/*		rise(2)	*/
-						/*		any(3)	*/
-#define	CFG_NIOS_CPU_PIO6_ITYPE	0		/*  IRQ type:	none(0)	*/
-						/*		level(1)*/
-						/*		edge(2)	*/
-
-#define	CFG_NIOS_CPU_PIO7	0x009209d0	/* PIO7		addr	*/
-#undef	CFG_NIOS_CPU_PIO7_IRQ			/*		w/o IRQ	*/
-#define	CFG_NIOS_CPU_PIO7_BITS	1		/*  number  of  bits	*/
-#define	CFG_NIOS_CPU_PIO7_TYPE	1		/*  io type:	tris(0)	*/
-						/*		out(1)	*/
-						/*		in(2)	*/
-#define	CFG_NIOS_CPU_PIO7_CAP	0		/*  capture:	no(0)	*/
-						/*		yes(1)	*/
-#define	CFG_NIOS_CPU_PIO7_EDGE	0		/*  edge type:	none(0)	*/
-						/*		fall(1)	*/
-						/*		rise(2)	*/
-						/*		any(3)	*/
-#define	CFG_NIOS_CPU_PIO7_ITYPE	0		/*  IRQ type:	none(0)	*/
-						/*		level(1)*/
-						/*		edge(2)	*/
-
-/* IDE i/f */
-#define	CFG_NIOS_CPU_IDE_NUMS	1		/* number of IDE contr.	*/
-#define	CFG_NIOS_CPU_IDE0	0x00920a00	/* IDE0		addr	*/
-
-/* active serial memory i/f */
-#define	CFG_NIOS_CPU_ASMI_NUMS	1		/* number of ASMI	*/
-#define	CFG_NIOS_CPU_ASMI0	0x00920b00	/* ASMI0	addr	*/
-#define	CFG_NIOS_CPU_ASMI0_IRQ	45		/*		IRQ	*/
-
-/* memory accessibility */
-#define	CFG_NIOS_CPU_SRAM_BASE	0x00800000	/* board SRAM	addr	*/
-#define	CFG_NIOS_CPU_SRAM_SIZE	(1024 * 1024)	/*  1 MB	size	*/
-
-#define	CFG_NIOS_CPU_SDRAM_BASE	0x01000000	/* board SDRAM	addr	*/
-#define	CFG_NIOS_CPU_SDRAM_SIZE	(16*1024*1024)	/* 16 MB	size	*/
-
-#define	CFG_NIOS_CPU_FLASH_BASE	0x00000000	/* board Flash	addr	*/
-#define	CFG_NIOS_CPU_FLASH_SIZE	(8*1024*1024)	/*  8 MB	size	*/
-
-/* LAN */
-#define	CFG_NIOS_CPU_LAN_NUMS	1		/* number of LAN i/f	*/
-
-#define	CFG_NIOS_CPU_LAN0_BASE	0x00910000	/* LAN0		addr	*/
-#define	CFG_NIOS_CPU_LAN0_OFFS	0x0300		/*		offset	*/
-#define	CFG_NIOS_CPU_LAN0_IRQ	30		/*		IRQ	*/
-#define	CFG_NIOS_CPU_LAN0_BUSW	32		/*	        buswidth*/
-#define	CFG_NIOS_CPU_LAN0_TYPE	0		/*	smc91111(0)	*/
-						/*	cs8900(1)	*/
-						/* ex:	alteramac(2)	*/
-
-/* symbolic redefinition (undef, if not present) */
-#define	CFG_NIOS_CPU_USER_TIMER		0	/* TIMER0: users choice	*/
-#define	CFG_NIOS_CPU_TICK_TIMER		1	/* TIMER1: tick (needed)*/
-
-#define	CFG_NIOS_CPU_BUTTON_PIO		0	/* PIO0: buttons	*/
-#define	CFG_NIOS_CPU_LCD_PIO		1	/* PIO1: ASCII LCD	*/
-#define	CFG_NIOS_CPU_LED_PIO		2	/* PIO2: LED bar	*/
-#define	CFG_NIOS_CPU_SEVENSEG_PIO	3	/* PIO3: 7-seg. display	*/
-#define	CFG_NIOS_CPU_RECONF_PIO		4	/* PIO4: reconf pin	*/
-#define	CFG_NIOS_CPU_CFPRESENT_PIO	5	/* PIO5: CF present IRQ	*/
-#define	CFG_NIOS_CPU_CFPOWER_PIO	6	/* PIO6: CF power/sw.	*/
-#define	CFG_NIOS_CPU_CFATASEL_PIO	7	/* PIO7: CF ATA select	*/
-
+#include <configs/DK1S10_standard_32.h>
+#elif	defined(CONFIG_NIOS_MTX_LDK_20)
+#include <configs/DK1S10_mtx_ldk_20.h>
 #else
 #error *** CFG_ERROR: you have to setup right NIOS CPU configuration
 #endif
@@ -308,8 +63,18 @@
 #error *** CFG_ERROR: you have to setup any SDRAM in NIOS CPU config
 #endif
 
-#define CFG_SRAM_BASE		CFG_NIOS_CPU_SRAM_BASE
-#define CFG_SRAM_SIZE		CFG_NIOS_CPU_SRAM_SIZE
+#if	defined(CFG_NIOS_CPU_SRAM_BASE) && defined(CFG_NIOS_CPU_SRAM_SIZE)
+
+#define	CFG_SRAM_BASE		CFG_NIOS_CPU_SRAM_BASE
+#define	CFG_SRAM_SIZE		CFG_NIOS_CPU_SRAM_SIZE
+
+#else
+
+#undef	CFG_SRAM_BASE
+#undef	CFG_SRAM_SIZE
+
+#endif
+
 #define CFG_VECT_BASE		CFG_NIOS_CPU_VEC_BASE
 
 /*------------------------------------------------------------------------
@@ -355,7 +120,15 @@
 #if	(CFG_NIOS_CPU_FLASH_SIZE != 0)
 
 #define	CFG_ENV_IS_IN_FLASH	1		/* Environment in flash */
+
+#if	defined(CONFIG_NIOS_STANDARD_32)
 #define CFG_ENV_ADDR		CFG_FLASH_BASE	/* Mem addr of env	*/
+#elif	defined(CONFIG_NIOS_MTX_LDK_20)
+#define CFG_ENV_ADDR		(CFG_FLASH_BASE + CFG_MONITOR_LEN)
+#else
+#error *** CFG_ERROR: you have to setup the environment base address CFG_ENV_ADDR
+#endif
+
 #define CFG_ENV_SIZE		(64 * 1024)	/* 64 KByte (1 sector)	*/
 #define CONFIG_ENV_OVERWRITE			/* Serial/eth change Ok */
 
@@ -388,11 +161,18 @@
  * TIMER FOR TIMEBASE -- Nios doesn't have the equivalent of ppc  PIT,
  * so an avalon bus timer is required.
  *----------------------------------------------------------------------*/
-#if	(CFG_NIOS_CPU_TIMER_NUMS != 0)
+#if	(CFG_NIOS_CPU_TIMER_NUMS != 0) && defined(CFG_NIOS_CPU_TICK_TIMER)
 
 #if	(CFG_NIOS_CPU_TICK_TIMER == 0)
 
-#error *** CFG_ERROR: tick timer at TIMER0 not supported, expand your config.h
+#define CFG_NIOS_TMRBASE	CFG_NIOS_CPU_TIMER0 /* TIMER0 as tick	*/
+#define CFG_NIOS_TMRIRQ		CFG_NIOS_CPU_TIMER0_IRQ
+
+#if	(CFG_NIOS_CPU_TIMER0_PER >= CFG_HZ)
+#define CFG_NIOS_TMRMS		(CFG_NIOS_CPU_TIMER0_PER / CFG_HZ)
+#else
+#error *** CFG_ERROR: you have to use a timer periode of more than CFG_HZ
+#endif
 
 #elif	(CFG_NIOS_CPU_TICK_TIMER == 1)
 
@@ -418,9 +198,6 @@
 
 #if	(CFG_NIOS_CPU_LAN0_TYPE == 0)		/* LAN91C111		*/
 
-	/****************************************************/
-	/* !!! LAN91C111 works for NIOS with patch only !!! */
-	/****************************************************/
 #define	CONFIG_DRIVER_SMC91111			/* Using SMC91c111	*/
 #undef	CONFIG_SMC91111_EXT_PHY			/* Internal PHY		*/
 #define	CONFIG_SMC91111_BASE	(CFG_NIOS_CPU_LAN0_BASE + CFG_NIOS_CPU_LAN0_OFFS)
@@ -463,7 +240,7 @@
 /*------------------------------------------------------------------------
  * STATUS LEDs
  *----------------------------------------------------------------------*/
-#if	(CFG_NIOS_CPU_PIO_NUMS != 0)
+#if	(CFG_NIOS_CPU_PIO_NUMS != 0) && defined(CFG_NIOS_CPU_LED_PIO)
 
 #if	(CFG_NIOS_CPU_LED_PIO == 0)
 
@@ -553,19 +330,19 @@
 /*------------------------------------------------------------------------
  * SEVEN SEGMENT LED DISPLAY
  *----------------------------------------------------------------------*/
-#if	(CFG_NIOS_CPU_PIO_NUMS != 0)
+#if	(CFG_NIOS_CPU_PIO_NUMS != 0) && defined(CFG_NIOS_CPU_SEVENSEG_PIO)
 
 #if	(CFG_NIOS_CPU_SEVENSEG_PIO == 0)
 
-#error *** CFG_ERROR: status LEDs at PIO0 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO0 not supported, expand your config.h
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 1)
 
-#error *** CFG_ERROR: status LEDs at PIO1 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO1 not supported, expand your config.h
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 2)
 
-#error *** CFG_ERROR: status LEDs at PIO2 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO2 not supported, expand your config.h
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 3)
 
@@ -581,27 +358,27 @@
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 4)
 
-#error *** CFG_ERROR: status LEDs at PIO4 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO4 not supported, expand your config.h
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 5)
 
-#error *** CFG_ERROR: status LEDs at PIO5 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO5 not supported, expand your config.h
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 6)
 
-#error *** CFG_ERROR: status LEDs at PIO6 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO6 not supported, expand your config.h
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 7)
 
-#error *** CFG_ERROR: status LEDs at PIO7 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO7 not supported, expand your config.h
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 8)
 
-#error *** CFG_ERROR: status LEDs at PIO8 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO8 not supported, expand your config.h
 
 #elif	(CFG_NIOS_CPU_SEVENSEG_PIO == 9)
 
-#error *** CFG_ERROR: status LEDs at PIO9 not supported, expand your config.h
+#error *** CFG_ERROR: seven segment display at PIO9 not supported, expand your config.h
 
 #else
 #error *** CFG_ERROR: you have to set CFG_NIOS_CPU_SEVENSEG_PIO in right case
@@ -692,17 +469,40 @@
 #define	CFG_MAXARGS		16	    /* max number of command args*/
 #define CFG_BARGSIZE		CFG_CBSIZE  /* Boot Argument Buffer Size */
 
+/* Default load address	*/
 #if	(CFG_SRAM_SIZE != 0)
-#define	CFG_LOAD_ADDR		CFG_SRAM_BASE	/* Default load address	*/
+
+/* default in SRAM */
+#define	CFG_LOAD_ADDR		CFG_SRAM_BASE
+
+#elif	(CFG_SDRAM_SIZE != 0)
+
+/* default in SDRAM */
+#if	(CFG_SDRAM_BASE == CFG_NIOS_CPU_VEC_BASE)
+#define	CFG_LOAD_ADDR		(CFG_SDRAM_BASE + CFG_NIOS_CPU_VEC_SIZE)
+#else
+#define	CFG_LOAD_ADDR		CFG_SDRAM_BASE
+#endif
+
 #else
-#undef	CFG_LOAD_ADDR
+#undef	CFG_LOAD_ADDR		/* force error break */
 #endif
 
+
+/* MEM test area */
 #if	(CFG_SDRAM_SIZE != 0)
-#define	CFG_MEMTEST_START	CFG_SDRAM_BASE	/* SDRAM til stack area */
-#define	CFG_MEMTEST_END		(CFG_INIT_SP - (1024 * 1024)) /* 1MB stack */
+
+/* SDRAM begin to stack area (1MB stack) */
+#if	(CFG_SDRAM_BASE == CFG_NIOS_CPU_VEC_BASE)
+#define	CFG_MEMTEST_START	(CFG_SDRAM_BASE + CFG_NIOS_CPU_VEC_SIZE)
+#define	CFG_MEMTEST_END		(CFG_INIT_SP - (1024 * 1024))
+#else
+#define	CFG_MEMTEST_START	CFG_SDRAM_BASE
+#define	CFG_MEMTEST_END		(CFG_INIT_SP - (1024 * 1024))
+#endif
+
 #else
-#undef	CFG_MEMTEST_START
+#undef	CFG_MEMTEST_START	/* force error break */
 #undef	CFG_MEMTEST_END
 #endif