[RFC PATCH 2/4] scripts: add get_console_base.pl
From: Łukasz Stelmach <l.stelmach@samsung.com>
Date: 2020-01-30 12:43:07
Also in:
linux-samsung-soc, lkml
Read UART base address from dtb for compile time configuration. Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com> --- scripts/get_console_base.pl | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100755 scripts/get_console_base.pl
diff --git scripts/get_console_base.pl scripts/get_console_base.pl
new file mode 100755
index 000000000000..c707ee37a19f
--- /dev/null
+++ scripts/get_console_base.pl@@ -0,0 +1,26 @@ +#!/usr/bin/perl -w + +use strict; +use File::Basename; +use File::Spec::Functions; + +my $DTB=$ARGV[0]; +die "$0: DTB file not found: $DTB" unless (-f $DTB); + +my $scripts_dir=dirname($0); +my $fdtget=catfile($scripts_dir, 'dtc', 'fdtget'); + +my $stdout_path=`$fdtget -ts "$DTB" /chosen stdout-path`; +chomp $stdout_path; + +if ($stdout_path =~ m#([^/][^:]*)(?::.*)#) { + $stdout_path=`$fdtget -ts "$DTB" /aliases $1`; + chomp $stdout_path; +} + +my $reg = `$fdtget -tx "$DTB" $stdout_path reg`; +unless ($reg =~ m/^([[:xdigit:]]+)/) { + die "Base address not found"; +} +$reg = $1; +print "0x$reg\n";
--
2.20.1
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