Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 255 insertions, 0 deletions

diff --git a/src/bldprogs/biossums.c b/src/bldprogs/biossums.c
new file mode 100644
index 00000000..871c55ae
--- /dev/null
+++ b/src/bldprogs/biossums.c
@@ -0,0 +1,255 @@
+/* $Id: biossums.c $ */
+/** @file
+ * Tool for modifying a BIOS image to write the BIOS checksum.
+ */
+
+/*
+ * Copyright (C) 2006-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program 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, in version 3 of the
+ * License.
+ *
+ * This program 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 this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <errno.h>
+#ifndef RT_OS_WINDOWS
+# include <unistd.h> /* unlink */
+#endif
+
+typedef unsigned char uint8_t;
+
+static uint8_t abBios[64*1024];
+static FILE *g_pIn = NULL;
+static FILE *g_pOut = NULL;
+static const char *g_pszOutFile = NULL;
+static const char *g_argv0;
+
+/**
+ * Find where the filename starts in the given path.
+ */
+static const char *name(const char *pszPath)
+{
+    const char *psz = strrchr(pszPath, '/');
+#if defined(_MSC_VER) || defined(__OS2__)
+    const char *psz2 = strrchr(pszPath, '\\');
+    if (!psz2)
+        psz2 = strrchr(pszPath, ':');
+    if (psz2 && (!psz || psz2 > psz))
+        psz = psz2;
+#endif
+    return psz ? psz + 1 : pszPath;
+}
+
+/**
+ * Report an error.
+ */
+static int fatal(const char *pszFormat, ...)
+{
+    va_list va;
+
+    fprintf(stderr, "%s: ", name(g_argv0));
+
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+
+    /* clean up */
+    if (g_pIn)
+        fclose(g_pIn);
+    if (g_pOut)
+        fclose(g_pOut);
+    if (g_pszOutFile)
+        unlink(g_pszOutFile);
+
+    return 1;
+}
+
+/**
+ * Calculate the checksum.
+ */
+static uint8_t calculateChecksum(uint8_t *pb, size_t cb, size_t iChecksum)
+{
+    uint8_t u8Sum = 0;
+    size_t  i;
+
+    for (i = 0; i < cb; i++)
+        if (i != iChecksum)
+            u8Sum += pb[i];
+
+    return -u8Sum;
+}
+
+/**
+ * Find a header in the binary.
+ *
+ * @param   pb        Where to search for the signature
+ * @param   cb        Size of the search area
+ * @param   pbHeader  Pointer to the start of the signature
+ * @returns           0 if signature was not found, 1 if found or
+ *                    2 if more than one signature was found */
+static int searchHeader(uint8_t *pb, size_t cb, const char *pszHeader, uint8_t **pbHeader)
+{
+    int          fFound = 0;
+    unsigned int i;
+    size_t       cbSignature = strlen(pszHeader);
+
+    for (i = 0; i < cb; i += 16)
+        if (!memcmp(pb + i, pszHeader, cbSignature))
+        {
+            if (fFound++)
+                return 2;
+            *pbHeader = pb + i;
+        }
+
+    return fFound;
+}
+
+int main(int argc, char **argv)
+{
+    FILE    *pIn, *pOut;
+    size_t  cbIn, cbOut;
+    int     fAdapterBios = 0;
+
+    g_argv0 = argv[0];
+
+    if (argc != 3)
+        return fatal("Input file name and output file name required.\n");
+
+    pIn = g_pIn = fopen(argv[1], "rb");
+    if (!pIn)
+        return fatal("Error opening '%s' for reading (%s).\n", argv[1], strerror(errno));
+
+    pOut = g_pOut = fopen(argv[2], "wb");
+    if (!pOut)
+        return fatal("Error opening '%s' for writing (%s).\n", argv[2], strerror(errno));
+    g_pszOutFile = argv[2];
+
+    /* safety precaution (aka. complete paranoia :-) */
+    memset(abBios, 0, sizeof(abBios));
+
+    cbIn = fread(abBios, 1, sizeof(abBios), pIn);
+    if (ferror(pIn))
+        return fatal("Error reading from '%s' (%s).\n", argv[1], strerror(errno));
+    g_pIn = NULL;
+    fclose(pIn);
+
+    fAdapterBios = abBios[0] == 0x55 && abBios[1] == 0xaa;
+
+    /* align size to page size */
+    if ((cbIn % 4096) != 0)
+        cbIn = (cbIn + 4095) & ~4095;
+
+    if (!fAdapterBios && cbIn != 64*1024)
+        return fatal("Size of system BIOS is not 64KB!\n");
+
+    if (fAdapterBios)
+    {
+        /* adapter BIOS */
+
+        /* set the length indicator */
+        abBios[2] = (uint8_t)(cbIn / 512);
+    }
+    else
+    {
+        /* system BIOS */
+        size_t  cbChecksum;
+        uint8_t u8Checksum;
+        uint8_t *pbHeader;
+
+        /* Set the BIOS32 header checksum. */
+        switch (searchHeader(abBios, cbIn, "_32_", &pbHeader))
+        {
+            case 0:
+                return fatal("No BIOS32 header not found!\n");
+            case 2:
+                return fatal("More than one BIOS32 header found!\n");
+            case 1:
+                cbChecksum = (size_t)pbHeader[9] * 16;
+                u8Checksum = calculateChecksum(pbHeader, cbChecksum, 10);
+                pbHeader[10] = u8Checksum;
+                break;
+        }
+
+        /* Set the PIR header checksum according to PCI IRQ Routing table
+         * specification version 1.0, Microsoft Corporation, 1996 */
+        switch (searchHeader(abBios, cbIn, "$PIR", &pbHeader))
+        {
+            case 0:
+                return fatal("No PCI IRQ routing table found!\n");
+            case 2:
+                return fatal("More than one PCI IRQ routing table found!\n");
+            case 1:
+                cbChecksum = (size_t)pbHeader[6] + (size_t)pbHeader[7] * 256;
+                u8Checksum = calculateChecksum(pbHeader, cbChecksum, 31);
+                pbHeader[31] = u8Checksum;
+                break;
+        }
+
+        /* Set the SMBIOS header checksum according to System Management BIOS
+         * Reference Specification Version 2.5, DSP0134. */
+        switch (searchHeader(abBios, cbIn, "_SM_", &pbHeader))
+        {
+            case 0:
+                return fatal("No SMBIOS header found!\n");
+            case 2:
+                return fatal("More than one SMBIOS header found!\n");
+            case 1:
+                /* at first fix the DMI header starting at SMBIOS header offset 16 */
+                u8Checksum = calculateChecksum(pbHeader+16, 15, 5);
+                pbHeader[21] = u8Checksum;
+
+                /* now fix the checksum of the whole SMBIOS header */
+                cbChecksum = (size_t)pbHeader[5];
+                u8Checksum = calculateChecksum(pbHeader, cbChecksum, 4);
+                pbHeader[4] = u8Checksum;
+                break;
+        }
+
+        /* If there is a VPD table, adjust its checksum. */
+        switch (searchHeader(abBios, cbIn, "\xAA\x55VPD", &pbHeader))
+        {
+            case 0:
+                break;  /* VPD is optional */
+            case 2:
+                return fatal("More than one VPD header found!\n");
+            case 1:
+                cbChecksum = (size_t)pbHeader[5];
+                if (cbChecksum < 0x30)
+                    return fatal("VPD size too small!\n");
+                u8Checksum = calculateChecksum(pbHeader, cbChecksum, cbChecksum - 1);
+                pbHeader[cbChecksum - 1] = u8Checksum;
+                break;
+        }
+    }
+
+    /* set the BIOS checksum */
+    abBios[cbIn-1] = calculateChecksum(abBios, cbIn, cbIn - 1);
+
+    cbOut = fwrite(abBios, 1, cbIn, pOut);
+    if (ferror(pOut))
+        return fatal("Error writing to '%s' (%s).\n", g_pszOutFile, strerror(errno));
+    g_pOut = NULL;
+    if (fclose(pOut))
+        return fatal("Error closing '%s' (%s).\n", g_pszOutFile, strerror(errno));
+
+    return 0;
+}
+