microcodeIntel: 20180312 -> 20180807

pkgs/os-specific/linux/microcode/intel-microcode2ucode.c

@@ -1,154 +0,0 @@
-/*
- * 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;
-}

pkgs/os-specific/linux/microcode/intel.nix

@@ -1,27 +1,26 @@
-{ stdenv, fetchurl, libarchive }:
+{ stdenv, fetchurl, libarchive, iucode-tool }:
 
 stdenv.mkDerivation rec {
   name = "microcode-intel-${version}";
-  version = "20180312";
+  version = "20180807";
 
   src = fetchurl {
-    url = "https://downloadmirror.intel.com/27591/eng/microcode-${version}.tgz";
-    sha256 = "0yg7q5blcqgq8jyjxhn9n48rxws77ylqzyn4kn10l6yzwan1yf0b";
+    url = "https://downloadmirror.intel.com/28039/eng/microcode-${version}.tgz";
+    sha256 = "0h4ygwx5brnrjz8v47aikrwhf0q3jhizxmzcii4bdjg64zffiy99";
   };
 
-  buildInputs = [ libarchive ];
+  nativeBuildInputs = [ iucode-tool libarchive ];
 
   sourceRoot = ".";
 
-  buildPhase = ''
-    gcc -O2 -Wall -o intel-microcode2ucode ${./intel-microcode2ucode.c}
-    ./intel-microcode2ucode microcode.dat
-  '';
-
   installPhase = ''
+    runHook preInstall
+
     mkdir -p $out kernel/x86/microcode
-    mv microcode.bin kernel/x86/microcode/GenuineIntel.bin
+    iucode_tool -w kernel/x86/microcode/GenuineIntel.bin intel-ucode/
     echo kernel/x86/microcode/GenuineIntel.bin | bsdcpio -o -H newc -R 0:0 > $out/intel-ucode.img
+
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {