upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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81 lines
2.0 KiB
81 lines
2.0 KiB
16 years ago
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Sheldon Instruments SIMPC8313 Board
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-----------------------------------------
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1. Board Switches and Jumpers
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S2 is used to set CFG_RESET_SOURCE.
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To boot the image in Large page NAND flash, use these DIP
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switch settings for S2:
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+----------+ ON
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| * * **** |
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| * * |
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+----------+
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12345678
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To boot the image in Small page NAND flash, use these DIP
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switch settings for S2:
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+----------+ ON
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| *** **** |
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| * |
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+----------+
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12345678
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(where the '*' indicates the position of the tab of the switch.)
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2. Memory Map
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The memory map looks like this:
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0x0000_0000 0x1fff_ffff DDR 512M
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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 (CS0) 32K
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or
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0xe280_0000 0xe281_ffff NAND FLASH (CS0) 128K
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0xff00_0000 0xff00_7fff FPGA (CS1) 1M
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3. 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 SIMPC8313_LP_config
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(or make SIMPC8313_SP_config, depending on the page size
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of your NAND flash)
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make
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4. Downloading and Flashing Images
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4.1 Reflash U-boot Image using U-boot
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=>run update_uboot
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You may want to try
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=>tftp $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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if the new u-boot doesn't boot, you can plug the board into
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your PCI slot and with the supplied driver and sample app
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you can reburn a working u-boot.
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4.2 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, fdtfile, and bootfile).
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=>tftp $loadaddr uImage
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=>nand write $loadaddr kernel $filesize
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=>tftp $loadaddr $fdtfile
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=>nand write $loadaddr 7e0000 1800
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=>boot
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5 Notes
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The console baudrate for SIMPC8313 is 115200bps.
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