From: wdenk <wdenk>
Date: Tue, 28 May 2002 22:57:05 +0000 (+0000)
Subject: * Add new RAM configurations to LWMON board
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=47c310bfc99ef5bcac336551f2c6ceb320a1b02e;p=users%2Frw%2Fppcboot.git

* Add new RAM configurations to LWMON board

* Fix "loadaddr" setting in TFTP code  (initialize  from  environment
  var if available).

* Patch by Marius Gröger, 28 May 2002
  (and Andrew May, 2 Apr 2002):
  Add CONFIG_EXTRA_ENV_SETTINGS configuration option
---

diff --git a/CHANGELOG b/CHANGELOG
index 54aaaa6..9ba61e0 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -14,6 +14,18 @@
 Modifications for 1.1.6:
 ======================================================================
 
+* Add new RAM configurations to LWMON board
+
+* Fix "loadaddr" setting in TFTP code  (initialize  from  environment
+  var if available).
+
+* Patch by Marius Gröger, 28 May 2002
+  (and Andrew May, 2 Apr 2002):
+  Add CONFIG_EXTRA_ENV_SETTINGS configuration option
+
+* Patch by Stefan Roese, 16 May 2002:
+  Fix I2C initialization
+
 * Patch by Wolfgang Grandegger, 15 May 2002:
   Add "filesize" support for "loadb" and "loads" commands
 
diff --git a/README b/README
index da65145..bdb8a43 100644
--- a/README
+++ b/README
@@ -317,7 +317,7 @@ The following options need to be configured:
 		Only needed when CONFIG_BOOTDELAY is enabled;
 		define a command string that is automatically executed
 		when no character is read on the console interface
-		withing "Boot Delay" after reset.
+		within "Boot Delay" after reset.
 
 		CONFIG_BOOTARGS
 		This can be used to pass arguments to the bootm command.
@@ -804,6 +804,31 @@ The following options need to be configured:
 		of the backslashes before semicolons and special
 		symbols.
 
+- Default Environment
+		CONFIG_EXTRA_ENV_SETTINGS
+
+                Define this to contain any number of null terminated
+                strings (variable = value pairs) that will be part of
+                the default enviroment compiled into the boot image.
+                For example, place something like this in your
+                board's config file:
+
+		#define CONFIG_EXTRA_ENV_SETTINGS \
+			"myvar1=value1\0" \
+			"myvar2=value2\0"
+
+                Warning: This method is based on knowledge about the
+                internal format how the environment is stored by the
+                PPCBoot code. This is NOT an official, expoerted
+                interface! Although it is unlikely that this format
+                will change soon, there is no guarantee either.
+		You better know what you are doing here.
+
+                Note: overly (ab)use of the default environment is
+                discouraged. Make sure to check other ways to preset
+                the environment like the autoscript function or the
+                boot command first.
+
 
 Configuration Settings:
 -----------------------
diff --git a/board/lwmon/lwmon.c b/board/lwmon/lwmon.c
index b7e184b..5348983 100644
--- a/board/lwmon/lwmon.c
+++ b/board/lwmon/lwmon.c
@@ -45,6 +45,7 @@ static long int dram_size (long int, long int *, long int);
  */
 const uint sdram_table[] =
 {
+#if defined(CFG_MEMORY_75) || defined(CFG_MEMORY_8E)
 	/*
 	 * Single Read. (Offset 0 in UPM RAM)
 	 */
@@ -91,6 +92,57 @@ const uint sdram_table[] =
 	 */
 	0x7FFFFC07, /* last */
 		    0xFFFFFCFF, 0xFFFFFCFF, 0xFFFFFCFF,
+#endif
+#ifdef CFG_MEMORY_7E
+	/*
+	 * Single Read. (Offset 0 in UPM RAM)
+	 */
+	0x0E2DBC04, 0x11AF7C04, 0xEFBAFC00, 0x1FF5FC47, /* last */
+	_NOT_USED_,
+	/*
+	 * SDRAM Initialization (offset 5 in UPM RAM)
+	 *
+         * This is no UPM entry point. The following definition uses
+         * the remaining space to establish an initialization
+         * sequence, which is executed by a RUN command.
+	 *
+	 */
+		    0x1FF5FC34, 0xEFEABC34, 0x1FB57C35, /* last */
+	/*
+	 * Burst Read. (Offset 8 in UPM RAM)
+	 */
+	0x0E2DBC04, 0x10AF7C04, 0xF0AFFC00, 0xF0AFFC00,
+	0xF1AFFC00, 0xEFBAFC00, 0x1FF5FC47, /* last */
+				 	    _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Single Write. (Offset 18 in UPM RAM)
+	 */
+	0x0E29BC04, 0x01B27C04, 0x1FF5FC47, /* last */
+					    _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Burst Write. (Offset 20 in UPM RAM)
+	 */
+	0x0E29BC04, 0x10A77C00, 0xF0AFFC00, 0xF0AFFC00,
+	0xE1BAFC04, 0x1FF5FC47, /* last */
+			        _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Refresh  (Offset 30 in UPM RAM)
+	 */
+	0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC84, 0xFFFFFC07, /* last */
+				_NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Exception. (Offset 3c in UPM RAM)
+	 */
+	0x7FFFFC07, /* last */
+		    0xFFFFFCFF, 0xFFFFFCFF, 0xFFFFFCFF,
+#endif
 };
 
 /* ------------------------------------------------------------------------- */
@@ -115,6 +167,7 @@ initdram (int board_type)
     volatile immap_t     *immr  = (immap_t *)CFG_IMMR;
     volatile memctl8xx_t *memctl = &immr->im_memctl;
     long int size_b0;
+    long int size8, size9;
     int i;
 
     /*
@@ -125,7 +178,7 @@ initdram (int board_type)
     memctl->memc_mptpr = CFG_MPTPR;
 
     /* burst length=4, burst type=sequential, CAS latency=2 */
-    memctl->memc_mar = 0x00000088;
+    memctl->memc_mar = CFG_MAR;
 
     /*
      * Map controller bank 3 to the SDRAM bank at preliminary address.
@@ -134,7 +187,7 @@ initdram (int board_type)
     memctl->memc_br3 = CFG_BR3_PRELIM;
 
     /* initialize memory address register */
-    memctl->memc_mamr = CFG_MAMR;	/* refresh not enabled yet */
+    memctl->memc_mamr = CFG_MAMR_8COL;	/* refresh not enabled yet */
 
     /* mode initialization (offset 5) */
     udelay(200);	/* 0x80006105 */
@@ -164,10 +217,27 @@ initdram (int board_type)
 
     /*
      * Check Bank 0 Memory Size for re-configuration
+     *
+     * try 8 column mode
      */
-    size_b0 = dram_size (CFG_MAMR, (ulong *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
+    size8 = dram_size (CFG_MAMR_8COL, (ulong *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
+
+    udelay (1000);
 
-    memctl->memc_mamr = CFG_MAMR | MAMR_PTBE;
+    /*
+     * try 9 column mode
+     */
+    size9 = dram_size (CFG_MAMR_9COL, (ulong *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
+
+    if (size8 < size9) {		/* leave configuration at 9 columns	*/
+	size_b0 = size9;
+	memctl->memc_mamr = CFG_MAMR_9COL | MAMR_PTBE;
+	udelay(500);
+    } else {				/* back to 8 columns			*/
+	size_b0 = size8;
+	memctl->memc_mamr = CFG_MAMR_8COL | MAMR_PTBE;
+	udelay(500);
+    }
 
     /*
      * Final mapping:
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 546804a..36565ce 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -86,6 +86,7 @@ int do_bootelf( cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[] );
 image_header_t header;
 
 ulong load_addr = CFG_LOAD_ADDR;		/* Default Load Address */
+
 int do_bootm (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
 {
 	ulong	iflag;
diff --git a/common/cmd_eeprom.c b/common/cmd_eeprom.c
index 11a868d..fc73c83 100644
--- a/common/cmd_eeprom.c
+++ b/common/cmd_eeprom.c
@@ -342,12 +342,11 @@ int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cn
 
 void eeprom_init  (void)
 {
-#if defined(CONFIG_8xx) || defined(CONFIG_8260)
-# if defined(CONFIG_SPI)
+#if defined(CONFIG_SPI)
 	spi_init_f ();
-# else
+#endif
+#if defined(CONFIG_HARD_I2C)
 	i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
-# endif
 #endif
 }
 /*-----------------------------------------------------------------------
diff --git a/common/cmd_net.c b/common/cmd_net.c
index ac5ed27..c92a0eb 100644
--- a/common/cmd_net.c
+++ b/common/cmd_net.c
@@ -103,6 +103,11 @@ netboot_common (int proto, cmd_tbl_t *cmdtp, bd_t *bd, int argc, char *argv[])
 	int   rcode = 0;
 	int   size;
 
+	/* pre-set load_addr */
+	if ((s = getenv("loadaddr")) != NULL) {
+		load_addr = simple_strtoul(s, NULL, 16);
+	}
+
 	switch (argc) {
 	case 1:
 		break;
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index d7a58db..29dde3a 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -228,6 +228,9 @@ static uchar default_environment[] = {
 #ifdef  CONFIG_CLOCKS_IN_MHZ
 	"clocks_in_mhz=1\0"
 #endif
+#ifdef  CONFIG_EXTRA_ENV_SETTINGS
+	CONFIG_EXTRA_ENV_SETTINGS
+#endif	  
 	"\0"
 };
 
diff --git a/common/environment.c b/common/environment.c
index 638c334..e652eac 100644
--- a/common/environment.c
+++ b/common/environment.c
@@ -186,6 +186,9 @@ env_t environment __PPCENV__ = {
 #ifdef	CONFIG_CLOCKS_IN_MHZ
 	"clocks_in_mhz=" "1"				"\0"
 #endif
+#ifdef  CONFIG_EXTRA_ENV_SETTINGS
+	CONFIG_EXTRA_ENV_SETTINGS
+#endif	  
 	"\0"		/* Term. env_t.data with 2 NULLs */
 	}
 };
diff --git a/include/config_lwmon.h b/include/config_lwmon.h
index d9899f3..9dc6a71 100644
--- a/include/config_lwmon.h
+++ b/include/config_lwmon.h
@@ -130,6 +130,7 @@
 #define CONFIG_COMMANDS	     ( (CONFIG_CMD_DFL & ~CFG_CMD_NET) | \
 				CFG_CMD_DATE	| \
 				CFG_CMD_I2C	| \
+				CFG_CMD_EEPROM	| \
 				CFG_CMD_IDE	| \
 				CFG_CMD_BSP	)
 #else
@@ -137,6 +138,7 @@
 				CFG_CMD_DHCP	| \
 				CFG_CMD_DATE	| \
 				CFG_CMD_I2C	| \
+				CFG_CMD_EEPROM	| \
 				CFG_CMD_IDE	| \
 				CFG_CMD_BSP	)
 #endif
@@ -468,6 +470,10 @@
 			 TOUCHPNL_TIMING )
 #define CFG_BR5_PRELIM	((TOUCHPNL_BASE & BR_BA_MSK) | BR_PS_32 | BR_V )
 
+#define CFG_MEMORY_75		1
+#undef CFG_MEMORY_7E
+#undef CFG_MEMORY_8E
+
 /*
  * Memory Periodic Timer Prescaler
  */
@@ -479,7 +485,13 @@
  * MAMR settings for SDRAM
  */
 
-#define CFG_MAMR	0x80802114
+#define CFG_MAMR_8COL	0x80802114
+#define CFG_MAMR_9COL	0x80902114
+
+/*
+ * MAR setting for SDRAM
+ */
+#define CFG_MAR		0x00000088
 
 /*
  * Internal Definitions