Cosmetic changes to comments and README files
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@ -255,10 +255,28 @@ Booting NuttX from an SD card
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These are the steps to get U-Boot booting from SD Card:
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$ git clone https://github.com/yuq/u-boot-sunxi.git
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$ cd u-boot-sunxi
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$ make pcduino CROSS_COMPILE=arm-none-eabi-
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$ sudo dd if=./spl/sunxi-spl.bin of=/dev/sdb bs=1024 seek=8
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$ sudo dd if=nuttx.bin of=/dev/sdb bs=1024 seek=32
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1. Get the U-Boot sources for the pcDuino
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$ git clone https://github.com/yuq/u-boot-sunxi.git
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2. Build U-Boot. We really only want the SPL program; this builds
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the whole thing:
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$ cd u-boot-sunxi
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$ make pcduino CROSS_COMPILE=arm-none-eabi-
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NOTES:
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a. You may need to use a different tool prefix for the CROSS_COMPILE=
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value, depending upon what toolchain you have installed and upon
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which platform your are working.
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b. When I try this on Cygwin, I get a make failure that is, apparently,
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due to some script incompatibility.
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3. Insert a FLASH stick. Use dmesg to get the name of the new USB
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device. Make sure that it is not mounted, then (assuming that the
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USB device is /dev/sdb):
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$ sudo dd if=./spl/sunxi-spl.bin of=/dev/sdb bs=1024 seek=8
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$ sudo dd if=nuttx.bin of=/dev/sdb bs=1024 seek=32
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Reference: https://www.olimex.com/wiki/Bare_Metal_programming_A13#Stand_alone_program_running_with_uboot
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