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Freescale MPC8313ERDB Board
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1. Board Switches and Jumpers
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S3 is used to set CONFIG_SYS_RESET_SOURCE.
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To boot the image at 0xFE000000 in NOR flash, use these DIP
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switch settings for S3 S4:
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+------+ +------+
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| | | **** |
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| **** | | |
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+------+ ON +------+ ON
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4321 4321
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(where the '*' indicates the position of the tab of the switch.)
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To boot the image at the beginning of NAND flash, use these
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DIP switch settings for S3 S4:
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+------+ +------+
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| * | | *** |
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| *** | | * |
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+------+ ON +------+ ON
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4321 4321
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(where the '*' indicates the position of the tab of the switch.)
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When booting from NAND, use u-boot-nand.bin, not u-boot.bin.
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2. Memory Map
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The memory map looks like this:
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0x0000_0000 0x07ff_ffff DDR 128M
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0x8000_0000 0x8fff_ffff PCI MEM 256M
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0x9000_0000 0x9fff_ffff PCI_MMIO 256M
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0xe000_0000 0xe00f_ffff IMMR 1M
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0xe200_0000 0xe20f_ffff PCI IO 16M
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0xe280_0000 0xe280_7fff NAND FLASH (CS1) 32K
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0xf000_0000 0xf001_ffff VSC7385 (CS2) 128K
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0xfa00_0000 0xfa00_7fff Board Status/ 32K
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LED Control (CS3)
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0xfe00_0000 0xfe7f_ffff NOR FLASH (CS0) 8M
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When booting from NAND, NAND flash is CS0 and NOR flash
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is CS1.
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3. Definitions
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3.1 Explanation of NEW definitions in:
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include/configs/MPC8313ERDB.h
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CONFIG_MPC83xx MPC83xx family
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CONFIG_MPC831x MPC831x specific
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CONFIG_MPC8313ERDB MPC8313ERDB board specific
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4. Compilation
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Assuming you're using BASH (or similar) as your shell:
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export CROSS_COMPILE=your-cross-compiler-prefix-
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make distclean
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make MPC8313ERDB_XXX_config
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(where XXX is:
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33 - 33 MHz oscillator, boot from NOR flash
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66 - 66 MHz oscillator, boot from NOR flash
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NAND_33 - 33 MHz oscillator, boot from NAND flash
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NAND_66 - 66 MHz oscillator, boot from NAND flash)
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make
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5. Downloading and Flashing Images
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5.1 Reflash U-boot Image using U-boot
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NOR flash:
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=>run tftpflash
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You may want to try
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=>tftpboot $loadaddr $uboot
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first, to make sure that the TFTP load will succeed before it
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goes ahead and wipes out your current firmware. And of course,
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have an alternate means of programming the flash available
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if the new u-boot doesn't boot.
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NAND flash:
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=>tftpboot $loadaddr <filename>
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=>nand erase 0 0x80000
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=>nand write $loadaddr 0 0x80000
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...where 0x80000 is the filesize rounded up to
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the next 0x20000 increment.
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5.2 Downloading and Booting Linux Kernel
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Ensure that all networking-related environment variables are set
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properly (including ipaddr, serverip, gatewayip (if needed),
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netmask, ethaddr, eth1addr, rootpath (if using NFS root),
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fdtfile, and bootfile).
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Then, do one of the following, depending on whether you
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want an NFS root or a ramdisk root:
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=>run nfsboot
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or
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=>run ramboot
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6 Notes
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The console baudrate for MPC8313ERDB is 115200bps.
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