0e5e358063
Currently, the serial console is hardcoded to ttyS0 in the bootloader element. This is a challenge for users that want to build images for some baremetal servers. Supermicro servers, for example, use ttyS1 for the serial over lan interface. This patch adds a new environment variable DIB_BOOTLOADER_SERIAL_CONSOLE that can be set to override the default. Change-Id: Ie8173be8690ac0b7164ce9e5b66d3c1c18f844d6
22 lines
819 B
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22 lines
819 B
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==========
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bootloader
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==========
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Installs ``grub[2]`` on boot partition on the system. In case GRUB2 is
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not available in the system, a fallback to Extlinux will happen. It's
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also possible to enforce the use of Extlinux by exporting a
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``DIB_EXTLINUX`` variable to the environment.
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Arguments
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=========
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* ``DIB_GRUB_TIMEOUT`` sets the ``grub`` menu timeout. It defaults to
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5 seconds. Set this to 0 (no timeout) for fast boot times.
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* ``DIB_BOOTLOADER_DEFAULT_CMDLINE`` sets parameters that are appended
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to the ``GRUB_CMDLINE_LINUX_DEFAULT`` values in ``grub.cfg``
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configuration. It defaults to ``nofb nomodeset vga=normal``.
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* ``DIB_BOOTLOADER_SERIAL_CONSOLE`` sets the serial device to be
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used as a console. It defaults to ``hvc0`` for PowerPC,
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``ttyAMA0,115200`` for ARM64, otherwise ``ttyS0,115200``.
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