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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
| commit | cf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch) | |
| tree | 757a3d280760c654767631cab5ad8af2d86d1848 /lib/build_OID_registry | |
| download | linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip | |
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij:
"Core changes:
- Use the non-blocking mux_state_try_select() in the generic MUX pin
control back-end
- Free pin maps on pinctrl_generic_to_map() failure in the core
helpers
New hardware pin control:
- Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC
(this is for the low power audio, LPASS = Low Power Audio SubSystem
portions)
- Upboard support on top of the Intel pin controller
- Apple T6030 and T6031 support (just compatible strings)
- Samsung Exynos 8855 SoC
- Mediatek MT6858 SoC
- Rockchip RK3308B and RV1106 SoCs
- Airoha EN7523 and AN7563 SoCs
Improvements:
- Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable
- Qualcomm improvements on top of the Qualcomm PDC (power domain
controller) irqchip improvements from tglx:s tree
- Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups
- The NPCM8xx driver has been put into shape fixing many pin and
group definitions
- Some non-urgent Tegra 264 pin assignments are fixed up
- Some non-urgent fixups to Airoha AN7581 and AN7583 registers and
pin assignments, missing features etc"
* tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits)
dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema
pinctrl: meson: sync some modify from A4
pinctrl: meson: a4: Add input enable pin configuration
pinctrl: realtek: rtd1625: remove unused group name spdif_sel
pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13
dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema
Revert "Merge branch 'ib-rsk7204' into devel"
pinctrl: rockchip: Add RV1106 pinctrl support
dt-bindings: pinctrl: rockchip: Add RV1106 compatible
pinctrl: rockchip: Decode drive strength in the get function
pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable
pinctrl: airoha: add support of an7563 SoC
dt-bindings: pinctrl: airoha: add support of an7563 pin controller
pinctrl: airoha: try to find chip scu node by phandle first
pinctrl: airoha: add support of en7523 SoC
dt-bindings: pinctrl: airoha: add support of en7523 pin controller
pinctrl: airoha: an7583: add support for olt pinmux
pinctrl: airoha: an7583: add support for pon_alt pinmux
pinctrl: airoha: an7583: add support for npu_uart pinmux
dt-bindings: pinctrl: airoha: an7583: add missed features
...
Diffstat (limited to 'lib/build_OID_registry')
| -rwxr-xr-x | lib/build_OID_registry | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/lib/build_OID_registry b/lib/build_OID_registry new file mode 100755 index 000000000..30493ac19 --- /dev/null +++ b/lib/build_OID_registry @@ -0,0 +1,218 @@ +#!/usr/bin/perl -w +# SPDX-License-Identifier: GPL-2.0-or-later +# +# Build a static ASN.1 Object Identified (OID) registry +# +# Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. +# Written by David Howells (dhowells@redhat.com) +# + +use strict; +use Cwd qw(abs_path); + +my @names = (); +my @oids = (); + +if ($#ARGV != 1) { + print STDERR "Format: ", $0, " <in-h-file> <out-c-file>\n"; + exit(2); +} + +my $abs_srctree = abs_path($ENV{'srctree'}); + +# +# Open the file to read from +# +open IN_FILE, "<$ARGV[0]" || die; +while (<IN_FILE>) { + chomp; + if (m!\s+OID_([a-zA-z][a-zA-Z0-9_]+),\s+/[*]\s+([012][.0-9]*)\s+[*]/!) { + push @names, $1; + push @oids, $2; + } +} +close IN_FILE || die; + +# +# Open the files to write into +# +open C_FILE, ">$ARGV[1]" or die; +print C_FILE "/*\n"; +my $scriptname = $0; +$scriptname =~ s#^\Q$abs_srctree/\E##; +print C_FILE " * Automatically generated by ", $scriptname, ". Do not edit\n"; +print C_FILE " */\n"; + +# +# Split the data up into separate lists and also determine the lengths of the +# encoded data arrays. +# +my @indices = (); +my @lengths = (); +my $total_length = 0; + +for (my $i = 0; $i <= $#names; $i++) { + my $name = $names[$i]; + my $oid = $oids[$i]; + + my @components = split(/[.]/, $oid); + + # Determine the encoded length of this OID + my $size = $#components; + for (my $loop = 2; $loop <= $#components; $loop++) { + $ENV{'BC_LINE_LENGTH'} = "0"; + my $c = `echo "ibase=10; obase=2; $components[$loop]" | bc`; + chomp($c); + + # We will base128 encode the number + my $tmp = length($c) - 1; + $tmp = int($tmp / 7); + $size += $tmp; + } + push @lengths, $size; + push @indices, $total_length; + $total_length += $size; +} + +# +# Emit the look-up-by-OID index table +# +print C_FILE "\n"; +if ($total_length <= 255) { + print C_FILE "static const unsigned char oid_index[OID__NR + 1] = {\n"; +} else { + print C_FILE "static const unsigned short oid_index[OID__NR + 1] = {\n"; +} +for (my $i = 0; $i <= $#names; $i++) { + print C_FILE "\t[OID_", $names[$i], "] = ", $indices[$i], ",\n" +} +print C_FILE "\t[OID__NR] = ", $total_length, "\n"; +print C_FILE "};\n"; + +# +# Encode the OIDs +# +my @encoded_oids = (); + +for (my $i = 0; $i <= $#names; $i++) { + my @octets = (); + + my @components = split(/[.]/, $oids[$i]); + + push @octets, $components[0] * 40 + $components[1]; + + for (my $loop = 2; $loop <= $#components; $loop++) { + # get the base 2 representation of the component + $ENV{'BC_LINE_LENGTH'} = "0"; + my $c = `echo "ibase=10; obase=2; $components[$loop]" | bc`; + chomp($c); + + my $tmp = length($c) - 1; + $tmp = int($tmp / 7); + + # zero pad upto length multiple of 7 + $c = substr("0000000", 0, ($tmp + 1) * 7 - length($c)).$c; + + # Base128 encode the number + for (my $j = 0; $j < $tmp; $j++) { + my $b = oct("0b".substr($c, $j * 7, 7)); + + push @octets, $b | 0x80; + } + push @octets, oct("0b".substr($c, $tmp * 7, 7)); + } + + push @encoded_oids, \@octets; +} + +# +# Create a hash value for each OID +# +my @hash_values = (); +for (my $i = 0; $i <= $#names; $i++) { + my @octets = @{$encoded_oids[$i]}; + + my $hash = $#octets; + foreach (@octets) { + $hash += $_ * 33; + } + + $hash = ($hash >> 24) ^ ($hash >> 16) ^ ($hash >> 8) ^ ($hash); + + push @hash_values, $hash & 0xff; +} + +# +# Emit the OID data +# +print C_FILE "\n"; +print C_FILE "static const unsigned char oid_data[", $total_length, "] = {\n"; +for (my $i = 0; $i <= $#names; $i++) { + my @octets = @{$encoded_oids[$i]}; + print C_FILE "\t"; + print C_FILE $_, ", " foreach (@octets); + print C_FILE "\t// ", $names[$i]; + print C_FILE "\n"; +} +print C_FILE "};\n"; + +# +# Build the search index table (ordered by length then hash then content) +# +my @index_table = ( 0 .. $#names ); + +@index_table = sort { + my @octets_a = @{$encoded_oids[$a]}; + my @octets_b = @{$encoded_oids[$b]}; + + return $hash_values[$a] <=> $hash_values[$b] + if ($hash_values[$a] != $hash_values[$b]); + return $#octets_a <=> $#octets_b + if ($#octets_a != $#octets_b); + for (my $i = $#octets_a; $i >= 0; $i--) { + return $octets_a[$i] <=> $octets_b[$i] + if ($octets_a[$i] != $octets_b[$i]); + } + return 0; + +} @index_table; + +# +# Emit the search index and hash value table +# +print C_FILE "\n"; +print C_FILE "static const struct {\n"; +print C_FILE "\tunsigned char hash;\n"; +if ($#names <= 255) { + print C_FILE "\tenum OID oid : 8;\n"; +} else { + print C_FILE "\tenum OID oid : 16;\n"; +} +print C_FILE "} oid_search_table[OID__NR] = {\n"; +for (my $i = 0; $i <= $#names; $i++) { + my @octets = @{$encoded_oids[$index_table[$i]]}; + printf(C_FILE "\t[%3u] = { %3u, OID_%-35s }, // ", + $i, + $hash_values[$index_table[$i]], + $names[$index_table[$i]]); + printf C_FILE "%02x", $_ foreach (@octets); + print C_FILE "\n"; +} +print C_FILE "};\n"; + +# +# Emit the OID debugging name table +# +#print C_FILE "\n"; +#print C_FILE "const char *const oid_name_table[OID__NR + 1] = {\n"; +# +#for (my $i = 0; $i <= $#names; $i++) { +# print C_FILE "\t\"", $names[$i], "\",\n" +#} +#print C_FILE "\t\"Unknown-OID\"\n"; +#print C_FILE "};\n"; + +# +# Polish off +# +close C_FILE or die; |
