opensbi: Added

opensbi/README

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+The goal of the OpenSBI project is to provide an open-source reference
+implementation of the RISC-V SBI specifications for platform-specific
+firmwares executing in M-mode. An OpenSBI implementation can be easily
+extended by RISC-V platform and system-on-chip vendors to fit a
+particular hardware configuration.

opensbi/opensbi.SlackBuild

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+#!/bin/bash
+
+# Slackware build script for opensbi
+
+# Copyright 2026  Eugene Wissner, Mannheim, Germany
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=opensbi
+VERSION=${VERSION:-1.8.1}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+
+ARCH=noarch
+
+# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
+# the name of the created package would be, and then exit. This information
+# could be useful to other scripts.
+if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
+  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
+  exit 0
+fi
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION-rv-bin
+tar xvf $CWD/$PRGNAM-$VERSION-rv-bin.tar.xz
+cd $PRGNAM-$VERSION-rv-bin
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+mkdir -p $PKG/usr/share/opensbi
+mv share/opensbi/ilp32 share/opensbi/lp64 $PKG/usr/share/opensbi/
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a \
+  share/opensbi/docs/refman.pdf \
+  $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE

opensbi/opensbi.info

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+PRGNAM="opensbi"
+VERSION="1.8.1"
+HOMEPAGE="https://github.com/riscv-software-src/opensbi"
+DOWNLOAD="https://github.com/riscv-software-src/opensbi/releases/download/v1.8.1/opensbi-1.8.1-rv-bin.tar.xz"
+MD5SUM="af18d0efaa01bdd4bba7205a65b490c7"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="Eugene Wissner"
+EMAIL="belka@caraus.de"

opensbi/slack-desc

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+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description. Line
+# up the first '|' above the ':' following the base package name, and the '|'
+# on the right side marks the last column you can put a character in. You must
+# make exactly 11 lines for the formatting to be correct. It's also
+# customary to leave one space after the ':'.
+
+       |-----handy-ruler------------------------------------------------------|
+opensbi: opensbi (RISC-V Open Source Supervisor Binary Interface)
+opensbi:
+opensbi: The goal of the OpenSBI project is to provide an open-source reference
+opensbi: implementation of the RISC-V SBI specifications for platform-specific
+opensbi: firmwares executing in M-mode. An OpenSBI implementation can be easily
+opensbi: extended by RISC-V platform and system-on-chip vendors to fit a
+opensbi: particular hardware configuration.
+opensbi:
+opensbi:
+opensbi:
+opensbi: