[people/ms/u-boot.git] / doc / README.mpc8315erdb

Freescale MPC8315ERDB Board
-----------------------------------------

1.	Board Switches and Jumpers

	S3 is used to set CONFIG_SYS_RESET_SOURCE.

	To boot the image at 0xFE000000 in NOR flash, use these DIP
	switch settings for S3 S4:

	+------+	+------+
	|      |	| **** |
	| **** |	|      |
	+------+ ON	+------+ ON
	  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:

	0x0000_0000	0x07ff_ffff	DDR		 128M
	0x8000_0000	0x8fff_ffff	PCI MEM		 256M
	0x9000_0000	0x9fff_ffff	PCI_MMIO	 256M
	0xe000_0000	0xe00f_ffff	IMMR		 1M
	0xe030_0000	0xe03f_ffff	PCI IO		 1M
	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:

	include/configs/MPC8315ERDB.h

	CONFIG_MPC83xx		MPC83xx family
	CONFIG_MPC831x		MPC831x specific
	CONFIG_MPC8315		MPC8315 specific
	CONFIG_MPC8315ERDB	MPC8315ERDB board specific

4.	Compilation

	Assuming you're using BASH (or similar) as your shell:

	export CROSS_COMPILE=your-cross-compiler-prefix-
	make distclean
	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

	cp.b 40000 fe000000 xxxx
	protect on all

	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
	properly (including ipaddr, serverip, gatewayip (if needed),
	netmask, ethaddr, eth1addr, rootpath (if using NFS root),
	fdtfile, and bootfile).

	Then, do one of the following, depending on whether you
	want an NFS root or a ramdisk root:

	=>run nfsboot
	or
	=>run ramboot

6	Notes

	The console baudrate for MPC8315ERDB is 115200bps.
Commit	Line	Data
8bd522ce DL	1	Freescale MPC8315ERDB Board
	2	-----------------------------------------
	3
	4	1. Board Switches and Jumpers
	5
6d0f6bcf	6	S3 is used to set CONFIG_SYS_RESET_SOURCE.
8bd522ce DL	7
8bd522ce DL	8	To boot the image at 0xFE000000 in NOR flash, use these DIP
be5a7190	9	switch settings for S3 S4:
8bd522ce DL	10
	11	+------+ +------+
	12	\| \| \| **** \|
	13	\| **** \| \| \|
	14	+------+ ON +------+ ON
	15	4321 4321
	16	(where the '*' indicates the position of the tab of the switch.)
	17
2e95004d AV	18	To boot the image at the beginning of NAND flash, use these
	19	DIP switch settings for S3 S4:
	20
	21	+------+ +------+
	22	\| * \| \| *** \|
	23	\| *** \| \| * \|
	24	+------+ ON +------+ ON
	25	4321 4321
	26	(where the '*' indicates the position of the tab of the switch.)
	27
	28	When booting from NAND, use u-boot-nand.bin, not u-boot.bin.
	29
8bd522ce DL	30	2. Memory Map
	31	The memory map looks like this:
	32
	33	0x0000_0000 0x07ff_ffff DDR 128M
	34	0x8000_0000 0x8fff_ffff PCI MEM 256M
	35	0x9000_0000 0x9fff_ffff PCI_MMIO 256M
	36	0xe000_0000 0xe00f_ffff IMMR 1M
	37	0xe030_0000 0xe03f_ffff PCI IO 1M
	38	0xe060_0000 0xe060_7fff NAND FLASH (CS1) 32K
	39	0xfe00_0000 0xfe7f_ffff NOR FLASH (CS0) 8M
	40
2e95004d AV	41	When booting from NAND, NAND flash is CS0 and NOR flash
	42	is CS1.
	43
8bd522ce DL	44	3. Definitions
	45
	46	3.1 Explanation of NEW definitions in:
	47
	48	include/configs/MPC8315ERDB.h
	49
	50	CONFIG_MPC83xx MPC83xx family
	51	CONFIG_MPC831x MPC831x specific
	52	CONFIG_MPC8315 MPC8315 specific
	53	CONFIG_MPC8315ERDB MPC8315ERDB board specific
	54
	55	4. Compilation
	56
	57	Assuming you're using BASH (or similar) as your shell:
	58
	59	export CROSS_COMPILE=your-cross-compiler-prefix-
	60	make distclean
2e95004d	61	make MPC8315ERDB_config (or MPC8315ERDB_NAND_config for u-boot-nand.bin)
8bd522ce DL	62	make all
	63
	64	5. Downloading and Flashing Images
	65
	66	5.1 Reflash U-boot Image using U-boot
	67
2e95004d AV	68	NOR flash:
2e95004d AV	69
8bd522ce DL	70	tftp 40000 u-boot.bin
	71	protect off all
	72	erase fe000000 fe1fffff
	73
	74	cp.b 40000 fe000000 xxxx
	75	protect on all
	76
	77	You have to supply the correct byte count with 'xxxx'
	78	from the TFTP result log.
	79
2e95004d AV	80	NAND flash:
	81
	82	=>tftpboot $loadaddr <filename>
	83	=>nand erase 0 0x80000
	84	=>nand write $loadaddr 0 0x80000
	85
	86	...where 0x80000 is the filesize rounded up to
	87	the next 0x20000 increment.
	88
8bd522ce DL	89	5.2 Downloading and Booting Linux Kernel
	90
	91	Ensure that all networking-related environment variables are set
	92	properly (including ipaddr, serverip, gatewayip (if needed),
	93	netmask, ethaddr, eth1addr, rootpath (if using NFS root),
	94	fdtfile, and bootfile).
	95
	96	Then, do one of the following, depending on whether you
	97	want an NFS root or a ramdisk root:
	98
	99	=>run nfsboot
	100	or
	101	=>run ramboot
	102
	103	6 Notes
	104
8bd522ce	105	The console baudrate for MPC8315ERDB is 115200bps.