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Cope with changes in the isolinux menus added for auto CPU detection

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Previously, this code was being confused by the re-use/overloading of
existing keywords in the ifcpu64.c module and not producing any menu
entries. Now, explicitly parse the new options and pick out just the
64-bit menus as they're a strict superset of the menus in isolinux.

This may enable some more issues, e.g. people trying to load a 64-bit
kernel on a 32-bit system, but until we get some auto-detection of CPU
in grub there's not much we can do about that. Let's get *something*
working at least.
This commit is contained in:
Steve McIntyre 2015-11-26 00:02:55 +00:00
parent 9d3c82d14d
commit b7938695a1
1 changed files with 27 additions and 0 deletions

27
tools/boot/stretch/parse_isolinux
View File

@ -33,6 +33,8 @@ my @menu_number = (1,0,0,0,0);
my @menu_title = ('', '', '', '', '');
my $menudepth = 0;
my $pre = "";
my $in_ifcpu = 0;
my $amd64_label = "";
my %menu;
sub parse_file {
@ -48,6 +50,31 @@ sub parse_file {
chomp $line;
if ($line =~ /^\s*include\ (.*\.cfg)/) {
parse_file($1);
} elsif ($line =~ /label archdetect/) {
# We don't have support for arch detection in Grub, so only
# show the amd64 options
$in_ifcpu = 1;
} elsif ($line =~ /kernel (.*c32)/) {
# This tells us that the matching "append" data will have
# the label we need to look for. Ugh!
if ($1 =~ /ifcpu64/) {
$in_ifcpu = 2;
}
} elsif ($line =~ /^\s*label (.*)/ && $1 =~ /$amd64_label/) {
$in_ifcpu = 3;
} elsif ($line =~ /^\s*append\ (.*\.cfg)/) {
if ($in_ifcpu == 3) {
parse_file($1);
$in_ifcpu = 1;
}
} elsif ($line =~ /append (.*)$/ && $in_ifcpu == 2) {
# Parse out the first entry - that's what we want to use
# as a label elsewhere. Ugh!
my @list = split(/ /, $1);
$amd64_label = $list[0];
$in_ifcpu = 1;
} elsif ($line =~ /default archdetect/) {
$in_ifcpu = 0;
} else {
push(@lines, $line);
}