1Freescale MPC8315ERDB Board
2-----------------------------------------
3
41.	Board Switches and Jumpers
5
6	S3 is used to set CONFIG_SYS_RESET_SOURCE.
7
8	To boot the image at 0xFE000000 in NOR flash, use these DIP
9	switch settings for S3 S4:
10
11	+------+	+------+
12	|      |	| **** |
13	| **** |	|      |
14	+------+ ON	+------+ ON
15	  4321		  4321
16	(where the '*' indicates the position of the tab of the switch.)
17
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
302.	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
41	When booting from NAND, NAND flash is CS0 and NOR flash
42	is CS1.
43
443.	Definitions
45
463.1	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
554.	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
61	make MPC8315ERDB_config (or MPC8315ERDB_NAND_config for u-boot-nand.bin)
62	make all
63
645.	Downloading and Flashing Images
65
665.1	Reflash U-Boot Image using U-Boot
67
68	NOR flash:
69
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
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
895.2	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
1036	Notes
104
105	The console baudrate for MPC8315ERDB is 115200bps.
106