63 lines
2.1 KiB
Plaintext
63 lines
2.1 KiB
Plaintext
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******************** WARNING ********************
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The compiled U-Boot binary is intended for NAND flash only!
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It won't work for NOR and will brick that bootloader!
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Also don't go playing around with different U-boot versions or flash targets
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unless you've got the necessary hardware and/or know-how to unbrick your kit.
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2014.01 is known good for NAND.
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******************** WARNING ********************
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You'll need to program the files created by buildroot into the flash.
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The fast way is to tftp transfer the files via one of the network interfaces.
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Alternatively you can transfer the files via serial console with an Ymodem
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file transfer from your terminal program by using a "loady" command
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from the u-boot prompt instead of the "tftp ..." commands stated below.
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Beware that serial console file transfers are quite slow!
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Remember to set the MPC8315ERDB switches to NAND boot if you want to use
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your newly built U-Boot.
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1. Program the new U-Boot binary to NAND flash (optional)
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If you don't feel confident upgrading your bootloader then don't do it,
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it's unnecessary most of the time.
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=> tftp $loadaddr u-boot-nand.bin
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=> nand erase 0 0x80000
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=> nand write $loadaddr 0 0x80000 $filesize
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2. Program the kernel to NAND flash
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=> tftp $loadaddr uImage
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=> nand erase 0x100000 0x1e0000
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=> nand write $loadaddr 0x100000 0x1e0000
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3. Program the DTB to NAND flash
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=> tftp $loadaddr mpc8315erdb.dtb
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=> nand erase 0x2e0000 0x20000
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=> nand write $loadaddr 0x2e0000 0x20000
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4. Program the root filesystem to NAND flash
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=> tftp $loadaddr rootfs.jffs2
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=> nand erase 0x400000 0x1c00000
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=> nand write $loadaddr 0x400000 $filesize
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5. Booting your new system
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=> setenv nandboot 'setenv bootargs root=/dev/mtdblock3 rootfstype=jffs2 console=$consoledev,$baudrate;nand read $fdtaddr 0x2e0000 0x20000;nand read $loadaddr 0x100000 0x1e0000;bootm $loadaddr - $fdtaddr'
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If you want to set this boot option as default:
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=> setenv bootcmd 'run nandboot'
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=> saveenv
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...or for a single boot:
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=> run nandboot
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You can login with user "root".
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