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The intent is to create a simple rule of thumb where arguments
are given beginning with those that relate to the device's physical
attributes, such as flash chip size, continuing with arguments
on how to use the hardware (e.g. display mode), and ending with
anything else.
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T400 (and variants) can now be built with either SeaBIOS or GRUB
as default payloads, e.g.:
'./libreboot build coreboot t400 textmode 16mb seabios'
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These configurations are intended to be read and supplied to make as
command-line arguments and override those defined in the config at
projects/coreboot/configs/{corebootfb,textmode}/config
For now, these configs do nothing--subsequent commits will add this
overriding functionality.
T400 Coreboot ROMs can be built with
'./libreboot build coreboot t400 corebootfb 8mb', for example, though
the last argument specifying flash chip size does nothing currently.
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The corebootfb ROM will use Coreboot's framebuffer for display while
the textmode ROM will use the legacy VGA text mode which is necessary
for payloads such as Memtest86+.
Options (and their values) changed in the new corebootfb config:
#CONFIG_VGA_TEXT_FRAMEBUFFER is not set
CONFIG_GENERIC_LINEAR_FRAMEBUFFER=y
CONFIG_LINEAR_FRAMEBUFFER=y
T400 Coreboot ROMs can now be built with
'./libreboot build coreboot t400 corebootfb' or
'./libreboot build coreboot t400 textmode', respectively.
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