diff options
| author | Anton Vorontsov | 2009-11-24 20:12:12 +0300 |
|---|---|---|
| committer | Kim Phillips | 2010-01-07 18:33:52 -0600 |
| commit | 2e95004deb6e33e33bf1b8a92a38cd2115bac4c2 (patch) | |
| tree | f36761ada7fdf6663643aba5fdab3411409d2f5e /doc | |
| parent | 6ca9da4d42aeb43df5ef29f7d0518009df583b2f (diff) | |
mpc83xx: Add NAND boot support for MPC8315E-RDB boards
The core support for NAND booting is there already, so this patch
is pretty straightforward.
There is one trick though: top level Makefile expects nand_spl to
be in nand_spl/board/$(BOARDDIR), but we can fully reuse the code
from mpc8313erdb boards, and so to not duplicate the code we just
symlink nand_spl/board/freescale/mpc8315erdb to mpc8313erdb.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
o silence make during ln echo
o update documentation
o and avoid:
$ ./MAKEALL MPC8315ERDB_NAND
Configuring for MPC8315ERDB board...
sdram.o: In function `fixed_sdram':
/home/r1aaha/git/u-boot/nand_spl/board/freescale/mpc8313erdb/sdram.c:72: undefined reference to `udelay'
by renaming udelay -> __udelay in the spirit of commit
3eb90bad651fab39cffba750ec4421a9c01d60e7 "Generic udelay() with watchdog
support".
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.mpc8315erdb | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/doc/README.mpc8315erdb b/doc/README.mpc8315erdb index 7d476d0018a..b32132d0533 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. |