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Increase BUILD_MIN_BIOSTABLE for large roms

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BUILD_MIN_BIOSTABLE reserves space in the f-segment.  Some data
structures -- for example disk drives known to seabios -- must be
stored there, so the space available here limits the number of
devices seabios is able to manage.

This patch sets BUILD_MIN_BIOSTABLE to 8k for bios images being 256k or
larger in size.  32bit code is moved off in that case, so we have more
room in the f-segment then.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann
2021-04-16 08:57:02 +02:00
parent 81433aa8a1
commit 7292e4a0a8
1 changed files with 4 additions and 0 deletions
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4
scripts/layoutrom.py
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@ -651,6 +651,10 @@ def main():
# Read kconfig config file
config = scanconfig(cfgfile)
# larger roms have more room in the f-segment due to moving out 32bit code
if config.get('CONFIG_ROM_SIZE') >= 256:
BUILD_MIN_BIOSTABLE = 8192
# Figure out which sections to keep.
allsections = info16[0] + info32seg[0] + info32flat[0]
symbols = {'16': info16[1], '32seg': info32seg[1], '32flat': info32flat[1]}