intel-ucode: add package

packages/linux-firmware/intel-ucode/package.mk

@@ -0,0 +1,54 @@
+################################################################################
+#      This file is part of LibreELEC - https://libreelec.tv
+#      Copyright (C) 2016 Team LibreELEC
+#
+#  LibreELEC is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  LibreELEC is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with LibreELEC.  If not, see <http://www.gnu.org/licenses/>.
+################################################################################
+
+PKG_NAME="intel-ucode"
+PKG_VERSION="20160714"
+PKG_REV="1"
+PKG_ARCH="x86_64"
+PKG_LICENSE="other"
+PKG_SITE="https://downloadcenter.intel.com/search?keyword=linux+microcode"
+PKG_URL="https://downloadmirror.intel.com/26156/eng/microcode-${PKG_VERSION}.tgz"
+PKG_DEPENDS_TARGET="toolchain intel-ucode:host"
+PKG_PRIORITY="optional"
+PKG_SECTION="linux-firmware"
+PKG_SHORTDESC="intel-ucode: Intel CPU microcodes"
+PKG_LONGDESC="intel-ucode: Intel CPU microcodes"
+
+PKG_IS_ADDON="no"
+PKG_AUTORECONF="no"
+
+unpack() {
+  mkdir -p $ROOT/$PKG_BUILD
+  tar xf $SOURCES/$PKG_NAME/$PKG_NAME-$PKG_VERSION.tgz -C $ROOT/$PKG_BUILD
+}
+
+make_host() {
+  $CC $CFLAGS -o intel-microcode2ucode intel-microcode2ucode.c
+}
+
+makeinstall_host() {
+  cp intel-microcode2ucode $ROOT/$TOOLCHAIN/bin/
+}
+
+make_target() {
+  intel-microcode2ucode ./microcode.dat
+}
+
+makeinstall_target() {
+  :
+}

packages/linux-firmware/intel-ucode/sources/intel-microcode2ucode.c

@@ -0,0 +1,154 @@
+/*
+ * Convert Intel microcode.dat into a single binary microcode.bin file
+ *
+ * Based on code by Kay Sievers <kay.sievers@vrfy.org>
+ * Changed to create a single file by Thomas Bächler <thomas@archlinux.org>
+ */
+
+
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <inttypes.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+struct microcode_header_intel {
+	unsigned int hdrver;
+	unsigned int rev;
+	unsigned int date;
+	unsigned int sig;
+	unsigned int cksum;
+	unsigned int ldrver;
+	unsigned int pf;
+	unsigned int datasize;
+	unsigned int totalsize;
+	unsigned int reserved[3];
+};
+
+union mcbuf {
+	struct microcode_header_intel hdr;
+	unsigned int i[0];
+	char c[0];
+};
+
+int main(int argc, char *argv[])
+{
+	const char *filename = "/lib/firmware/microcode.dat";
+	FILE *f;
+	char line[LINE_MAX];
+	char buf[4000000];
+	union mcbuf *mc;
+	size_t bufsize, count, start;
+	int rc = EXIT_SUCCESS;
+
+	if (argv[1] != NULL)
+		filename = argv[1];
+
+	count = 0;
+	mc = (union mcbuf *) buf;
+	f = fopen(filename, "re");
+	if (f == NULL) {
+		printf("open %s: %m\n", filename);
+		rc = EXIT_FAILURE;
+		goto out;
+	}
+
+	while (fgets(line, sizeof(line), f) != NULL) {
+		if (sscanf(line, "%x, %x, %x, %x",
+		    &mc->i[count],
+		    &mc->i[count + 1],
+		    &mc->i[count + 2],
+		    &mc->i[count + 3]) != 4)
+			continue;
+		count += 4;
+	}
+	fclose(f);
+
+	bufsize = count * sizeof(int);
+	printf("%s: %lu(%luk) bytes, %zu integers\n",
+	       filename,
+	       bufsize,
+	       bufsize / 1024,
+	       count);
+
+	if (bufsize < sizeof(struct microcode_header_intel))
+		goto out;
+
+	f = fopen("microcode.bin", "we");
+	if (f == NULL) {
+		printf("open microcode.bin: %m\n");
+		rc = EXIT_FAILURE;
+		goto out;
+	}
+
+	start = 0;
+	for (;;) {
+		size_t size;
+		unsigned int family, model, stepping;
+		unsigned int year, month, day;
+
+		mc = (union mcbuf *) &buf[start];
+
+		if (mc->hdr.totalsize)
+			size = mc->hdr.totalsize;
+		else
+			size = 2000 + sizeof(struct microcode_header_intel);
+
+		if (mc->hdr.ldrver != 1 || mc->hdr.hdrver != 1) {
+			printf("unknown version/format:\n");
+			rc = EXIT_FAILURE;
+			break;
+		}
+
+		/*
+		 *  0- 3 stepping
+		 *  4- 7 model
+		 *  8-11 family
+		 * 12-13 type
+		 * 16-19 extended model
+		 * 20-27 extended family
+		 */
+		family = (mc->hdr.sig >> 8) & 0xf;
+		if (family == 0xf)
+			family += (mc->hdr.sig >> 20) & 0xff;
+		model = (mc->hdr.sig >> 4) & 0x0f;
+		if (family == 0x06)
+			model += ((mc->hdr.sig >> 16) & 0x0f) << 4;
+		stepping = mc->hdr.sig & 0x0f;
+
+		year = mc->hdr.date & 0xffff;
+		month = mc->hdr.date >> 24;
+		day = (mc->hdr.date >> 16) & 0xff;
+
+		printf("\n");
+		printf("signature: 0x%02x\n", mc->hdr.sig);
+		printf("flags:     0x%02x\n", mc->hdr.pf);
+		printf("revision:  0x%02x\n", mc->hdr.rev);
+		printf("date:      %04x-%02x-%02x\n", year, month, day);
+		printf("size:      %zu\n", size);
+
+		if (fwrite(mc, size, 1, f) != 1) {
+			printf("write microcode.bin: %m\n");
+			rc = EXIT_FAILURE;
+			goto out;
+		}
+
+		start += size;
+		if (start >= bufsize)
+			break;
+	}
+	fclose(f);
+	printf("\n");
+out:
+	return rc;
+}