X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=doc%2FREADME.mpc8315erdb;h=b32132d0533eba9a5004cc9341008be6ff9e5f73;hb=d59772eb755ccc32b279a6164ada93878ba4838c;hp=7d476d0018a7903ed74ddac7dbe06085cfe815f1;hpb=6d0f6bcf337c5261c08fabe12982178c2c489d76;p=u-boot

diff --git a/doc/README.mpc8315erdb b/doc/README.mpc8315erdb
index 7d476d0018..b32132d053 100644
--- a/doc/README.mpc8315erdb
+++ b/doc/README.mpc8315erdb
@@ -15,6 +15,18 @@ Freescale MPC8315ERDB Board
 	  4321		  4321
 	(where the '*' indicates the position of the tab of the switch.)
 
+	To boot the image at the beginning of NAND flash, use these
+	DIP switch settings for S3 S4:
+
+	+------+	+------+
+	| *    |	|  *** |
+	|  *** |	| *    |
+	+------+ ON	+------+ ON
+	  4321		  4321
+	(where the '*' indicates the position of the tab of the switch.)
+
+	When booting from NAND, use u-boot-nand.bin, not u-boot.bin.
+
 2.	Memory Map
 	The memory map looks like this:
 
@@ -26,6 +38,9 @@ Freescale MPC8315ERDB Board
 	0xe060_0000	0xe060_7fff	NAND FLASH (CS1) 32K
 	0xfe00_0000	0xfe7f_ffff	NOR FLASH (CS0)	 8M
 
+	When booting from NAND, NAND flash is CS0 and NOR flash
+	is CS1.
+
 3.	Definitions
 
 3.1	Explanation of NEW definitions in:
@@ -43,13 +58,15 @@ Freescale MPC8315ERDB Board
 
 	export CROSS_COMPILE=your-cross-compiler-prefix-
 	make distclean
-	make MPC8315ERDB_config
+	make MPC8315ERDB_config (or MPC8315ERDB_NAND_config for u-boot-nand.bin)
 	make all
 
 5.	Downloading and Flashing Images
 
 5.1	Reflash U-boot Image using U-boot
 
+	NOR flash:
+
 	tftp 40000 u-boot.bin
 	protect off all
 	erase fe000000 fe1fffff
@@ -60,6 +77,15 @@ Freescale MPC8315ERDB Board
 	You have to supply the correct byte count with 'xxxx'
 	from the TFTP result log.
 
+	NAND flash:
+
+	=>tftpboot $loadaddr <filename>
+	=>nand erase 0 0x80000
+	=>nand write $loadaddr 0 0x80000
+
+	...where 0x80000 is the filesize rounded up to
+	the next 0x20000 increment.
+
 5.2	Downloading and Booting Linux Kernel
 
 	Ensure that all networking-related environment variables are set
@@ -76,5 +102,4 @@ Freescale MPC8315ERDB Board
 
 6	Notes
 
-	Booting from NAND flash is not yet supported.
 	The console baudrate for MPC8315ERDB is 115200bps.