42 lines
1.7 KiB
ReStructuredText
42 lines
1.7 KiB
ReStructuredText
Texas Instruments OMAP
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======================
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Texas Instruments OMAP SoCs have a two-stage boot process. The first stage is
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known as Xload which only loads the second stage bootloader. barebox can act as
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both the first and the second stage loader. To build as a first stage loader,
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build the \*_xload_defconfig for your board; for second stage, build the normal
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\*_defconfig for your board.
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Bootstrapping a PandaBoard
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--------------------------
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The PandaBoard boots from SD card. The OMAP Boot ROM code loads a file named
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'MLO' on a bootable FAT partition on this card. There are several howtos and
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scripts on the net which describe how to prepare such a card (it needs
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special partitioning). The same procedure can be used for barebox. With such a
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card (assumed to be at /dev/sdc), the following can be used to build and install
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barebox::
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# mount -t fat /dev/sdc1 /mnt
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# make panda_xload_defconfig
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# make
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# cp barebox.bin.ift /mnt/MLO
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# make panda_defconfig
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# make
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# cp barebox.bin /mnt/barebox.bin
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# umount /mnt
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Bootstrapping a BeagleBoard is the same with the corresponding BeagleBoard defconfigs.
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Networking
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----------
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The original BeagleBoard does not have Ethernet (the newer BeagleBoard-xM does),
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but a USB Ethernet dongle can be used for networking. The PandaBoard has an
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integrated USB Ethernet converter which behaves exactly like an external dongle.
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Barebox does not automatically detect USB devices as this would have bad effects
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on boot time when USB is not needed.
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So you have to use the [[commands:usb|usb]] command to trigger USB detection.
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After this a network device should be present which can be used with the normal
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[[commands:dhcp|dhcp]] and [[commands:tftp|tftp]] commands.
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