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Diffstat (limited to 'board/freescale/mpc8315erdb/readme.txt')
-rw-r--r-- | board/freescale/mpc8315erdb/readme.txt | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/board/freescale/mpc8315erdb/readme.txt b/board/freescale/mpc8315erdb/readme.txt new file mode 100644 index 0000000000..91e58e4d4a --- /dev/null +++ b/board/freescale/mpc8315erdb/readme.txt @@ -0,0 +1,62 @@ + +******************** WARNING ******************** +The compiled U-Boot binary is intended for NAND flash only! +It won't work for NOR and will brick that bootloader! + +Also don't go playing around with different U-boot versions or flash targets +unless you've got the necessary hardware and/or know-how to unbrick your kit. + +2012.10 is known good for NAND. +******************** WARNING ******************** + +You'll need to program the files created by buildroot into the flash. +The fast way is to tftp transfer the files via one of the network interfaces. + +Alternatively you can transfer the files via serial console with an Ymodem +file transfer from your terminal program by using a "loady" command +from the u-boot prompt instead of the "tftp ..." commands stated below. +Beware that serial console file transfers are quite slow! + +Remember to set the MPC8315ERDB switches to NAND boot if you want to use +your newly built U-Boot. + +1. Program the new U-Boot binary to NAND flash (optional) + If you don't feel confident upgrading your bootloader then don't do it, + it's unnecessary most of the time. + + => tftp $loadaddr u-boot-nand.bin + => nand erase 0 0x80000 + => nand write $loadaddr 0 0x80000 $filesize + +2. Program the kernel to NAND flash + + => tftp $loadaddr uImage + => nand erase 0x100000 0x1e0000 + => nand write $loadaddr 0x100000 0x1e0000 + +3. Program the DTB to NAND flash + + => tftp $loadaddr mpc8315erdb.dtb + => nand erase 0x2e0000 0x20000 + => nand write $loadaddr 0x2e0000 0x20000 + +4. Program the root filesystem to NAND flash + + => tftp $loadaddr rootfs.jffs2 + => nand erase 0x400000 0x1c00000 + => nand write $loadaddr 0x400000 $filesize + +5. Booting your new system + + => setenv nandboot 'setenv bootargs root=/dev/mtdblock3 rootfstype=jffs2 console=$consoledev,$baudrate;nand read $fdtaddr 0x2e0000 0x20000;nand read $loadaddr 0x100000 0x1e0000;bootm $loadaddr - $fdtaddr' + + If you want to set this boot option as default: + + => setenv bootcmd 'run nandboot' + => saveenv + + ...or for a single boot: + + => run nandboot + + You can login with user "root". |