summaryrefslogtreecommitdiffstats
path: root/board/freescale/mpc8315erdb/readme.txt
diff options
context:
space:
mode:
Diffstat (limited to 'board/freescale/mpc8315erdb/readme.txt')
-rw-r--r--board/freescale/mpc8315erdb/readme.txt62
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".
OpenPOWER on IntegriCloud