* Patch by Rune Torgersen, 4 Jun 2003:

add large memory support for MPC8266ADS board

* Patch by Richard Woodruff, 19 June 03:
  - Enabled standard u-boot device abstraction for ARM
  - Enabled console device for ARM
  - Initilized bi_baudrate for ARM

* Patch by Bill Hargen, 23 Apr 2003:
  fix byte order for 824x I2C addresses (write op)

CHANGELOG

@@ -2,6 +2,17 @@
 Changes since U-Boot 0.3.1:
 ======================================================================
 
+* Patch by Rune Torgersen, 4 Jun 2003:
+  add large memory support for MPC8266ADS board
+  
+* Patch by Richard Woodruff, 19 June 03:
+  - Enabled standard u-boot device abstraction for ARM
+  - Enabled console device for ARM
+  - Initilized bi_baudrate for ARM
+
+* Patch by Bill Hargen, 23 Apr 2003:
+  fix byte order for 824x I2C addresses (write op)
+
 * Patch by Murray Jensen, 20 Jun 2003:
   - hymod update
   - cleanup (especially for gcc-3.x compilers)

board/mpc8266ads/mpc8266ads.c

@@ -46,7 +46,7 @@
  *   PSDMR_BUFCMD adds a clock
  *   0            no extra clock
  */
-#define CONFIG_PBI		0
+#define CONFIG_PBI		PSDMR_PBI
 #define PESSIMISTIC_SDRAM	0
 #define EAMUX			0	/* EST requires EAMUX */
 #define BUFCMD			0
@@ -379,6 +379,25 @@ long int initdram(int board_type)
 
 
     sdram_size = 1 << (rows + cols + banks + width);
+    /* hack for high density memory (512MB per CS) */
+    /* !!!!! Will ONLY work with Page Based Interleave !!!!!
+             ( PSDMR[PBI] = 1 ) 
+    */
+    /* mamory actually has 11 column addresses, but the memory controller 
+       doesn't really care. 
+       the calculations that follow will however move the rows so that 
+       they are muxed one bit off if you use 11 bit columns. 
+       The solution is to tell the memory controller the correct size of the memory
+       but change the number of columns to 10 afterwards.
+       The 11th column addre will still be mucxed correctly onto the bus.
+
+       Also be aware that the MPC8266ADS board Rev B has not connected 
+       Row addres 13 to anything.
+
+       The fix is to connect ADD16 (from U37-47) to SADDR12 (U28-126)
+    */
+    if (cols > 10)
+	    cols = 10;
 
 #if(CONFIG_PBI == 0)	/* bank-based interleaving */
     rowst = ((32 - 6) - (rows + cols + width)) * 2;

common/devices.c

@@ -160,14 +160,16 @@ int devices_init (void)
 {
 	DECLARE_GLOBAL_DATA_PTR;
 
-	int i;
+#ifndef CONFIG_ARM     /* already relocated for current ARM implementation */
 	ulong relocation_offset = gd->reloc_off;
+	int i;
 
 	/* relocate device name pointers */
 	for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
 		stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
 						relocation_offset);
 	}
+#endif
 
 	/* Initialize the list */
 	devlist = ListCreate (sizeof (device_t));

cpu/mpc824x/drivers/i2c/i2c1.c

@@ -1193,14 +1193,17 @@ int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len)
 int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len)
 {
 	I2CStatus status;
-	unsigned char dummy_buffer[I2C_RXTX_LEN + 2];
+	uchar dummy_buffer[I2C_RXTX_LEN + 2];
+	uchar *p;
 	int i;
 
-	dummy_buffer[0] = addr & 0xFF;
-	if (alen == 2)
-		dummy_buffer[1] = (addr >> 8) & 0xFF;
-	for (i = 0; i < len; i++)
-		dummy_buffer[i + alen] = buffer[i];
+	p = dummy_buffer;
+	/* fill in address in big endian order */
+	for (i=0; i<alen; ++i)
+		*p++ = (addr >> (i * 8)) & 0xFF;
+	/* fill in data */
+	for (i=0; i<len; ++i)
+		*p++ = *buffer;
 
 	status = I2C_do_buffer (0, I2C_MASTER_XMIT, chip, alen + len,
 				dummy_buffer, I2C_STOP, 1, I2C_NO_RESTART);

lib_arm/board.c

@@ -27,7 +27,9 @@
 
 #include <common.h>
 #include <command.h>
+#include <malloc.h>
 #include <devices.h>
+#include <syscall.h>
 #include <version.h>
 #include <net.h>
 
@@ -101,8 +103,7 @@ static int init_baudrate (void)
 
 	uchar tmp[64];	/* long enough for environment variables */
 	int i = getenv_r ("baudrate", tmp, sizeof (tmp));
-
-	gd->baudrate = (i > 0)
+	gd->bd->bi_baudrate = gd->baudrate = (i > 0)
 			? (int) simple_strtoul (tmp, NULL, 10)
 			: CONFIG_BAUDRATE;
 
@@ -186,6 +187,7 @@ init_fnc_t *init_sequence[] = {
 	env_init,		/* initialize environment */
 	init_baudrate,		/* initialze baudrate settings */
 	serial_init,		/* serial communications setup */
+	console_init_f,		/* stage 1 init of console */
 	display_banner,		/* say that we are here */
 	dram_init,		/* configure available RAM banks */
 	display_dram_config,
@@ -283,6 +285,15 @@ void start_armboot (void)
 		}
 	}
 
+	devices_init ();      /* get the devices list going. */
+
+	/* Syscalls are not implemented for ARM. But allocating
+	 * this allows the console_init routines to work without #ifdefs
+	 */
+	syscall_tbl = (void **) malloc (NR_SYSCALLS * sizeof (void *));
+
+	console_init_r ();	/* fully init console as a device */
+
 #if defined(CONFIG_MISC_INIT_R)
 	/* miscellaneous platform dependent initialisations */
 	misc_init_r ();