Merge remote-tracking branch 'remotes/kraxel/tags/pull-fw_cfg-20150610-1' into staging

fw_cfg: drop write support, qemu cmdline support, bugfixes.
bios-tables-test: fix smbios test.

# gpg: Signature made Wed Jun 10 07:29:53 2015 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-fw_cfg-20150610-1:
  bios-tables-test: handle false-positive smbios signature matches
  fw_cfg: insert fw_cfg file blobs via qemu cmdline
  fw_cfg: prohibit insertion of duplicate fw_cfg file names
  fw_cfg: prevent selector key conflict
  fw_cfg: remove support for guest-side data writes
  fw_cfg: fix FW_CFG_BOOT_DEVICE update on ppc and sparc
  fw_cfg: add fw_cfg_modify_i16 (update) method
  QemuOpts: increase number of vm_config_groups

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 44 insertions, 32 deletions

diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
index 7e85dc45e3..0de1742d7d 100644
--- a/tests/bios-tables-test.c
+++ b/tests/bios-tables-test.c
@@ -599,35 +599,15 @@ static void test_acpi_asl(test_data *data)
     free_test_data(&exp_data);
 }
 
-static void test_smbios_ep_address(test_data *data)
-{
-    uint32_t off;
-
-    /* find smbios entry point structure */
-    for (off = 0xf0000; off < 0x100000; off += 0x10) {
-        uint8_t sig[] = "_SM_";
-        int i;
-
-        for (i = 0; i < sizeof sig - 1; ++i) {
-            sig[i] = readb(off + i);
-        }
-
-        if (!memcmp(sig, "_SM_", sizeof sig)) {
-            break;
-        }
-    }
-
-    g_assert_cmphex(off, <, 0x100000);
-    data->smbios_ep_addr = off;
-}
-
-static void test_smbios_ep_table(test_data *data)
+static bool smbios_ep_table_ok(test_data *data)
 {
     struct smbios_entry_point *ep_table = &data->smbios_ep_table;
     uint32_t addr = data->smbios_ep_addr;
 
     ACPI_READ_ARRAY(ep_table->anchor_string, addr);
-    g_assert(!memcmp(ep_table->anchor_string, "_SM_", 4));
+    if (memcmp(ep_table->anchor_string, "_SM_", 4)) {
+        return false;
+    }
     ACPI_READ_FIELD(ep_table->checksum, addr);
     ACPI_READ_FIELD(ep_table->length, addr);
     ACPI_READ_FIELD(ep_table->smbios_major_version, addr);
@@ -636,17 +616,50 @@ static void test_smbios_ep_table(test_data *data)
     ACPI_READ_FIELD(ep_table->entry_point_revision, addr);
     ACPI_READ_ARRAY(ep_table->formatted_area, addr);
     ACPI_READ_ARRAY(ep_table->intermediate_anchor_string, addr);
-    g_assert(!memcmp(ep_table->intermediate_anchor_string, "_DMI_", 5));
+    if (memcmp(ep_table->intermediate_anchor_string, "_DMI_", 5)) {
+        return false;
+    }
     ACPI_READ_FIELD(ep_table->intermediate_checksum, addr);
     ACPI_READ_FIELD(ep_table->structure_table_length, addr);
-    g_assert_cmpuint(ep_table->structure_table_length, >, 0);
+    if (ep_table->structure_table_length == 0) {
+        return false;
+    }
     ACPI_READ_FIELD(ep_table->structure_table_address, addr);
     ACPI_READ_FIELD(ep_table->number_of_structures, addr);
-    g_assert_cmpuint(ep_table->number_of_structures, >, 0);
+    if (ep_table->number_of_structures == 0) {
+        return false;
+    }
     ACPI_READ_FIELD(ep_table->smbios_bcd_revision, addr);
-    g_assert(!acpi_checksum((uint8_t *)ep_table, sizeof *ep_table));
-    g_assert(!acpi_checksum((uint8_t *)ep_table + 0x10,
-                            sizeof *ep_table - 0x10));
+    if (acpi_checksum((uint8_t *)ep_table, sizeof *ep_table) ||
+        acpi_checksum((uint8_t *)ep_table + 0x10, sizeof *ep_table - 0x10)) {
+        return false;
+    }
+    return true;
+}
+
+static void test_smbios_entry_point(test_data *data)
+{
+    uint32_t off;
+
+    /* find smbios entry point structure */
+    for (off = 0xf0000; off < 0x100000; off += 0x10) {
+        uint8_t sig[] = "_SM_";
+        int i;
+
+        for (i = 0; i < sizeof sig - 1; ++i) {
+            sig[i] = readb(off + i);
+        }
+
+        if (!memcmp(sig, "_SM_", sizeof sig)) {
+            /* signature match, but is this a valid entry point? */
+            data->smbios_ep_addr = off;
+            if (smbios_ep_table_ok(data)) {
+                break;
+            }
+        }
+    }
+
+    g_assert_cmphex(off, <, 0x100000);
 }
 
 static inline bool smbios_single_instance(uint8_t type)
@@ -767,8 +780,7 @@ static void test_acpi_one(const char *params, test_data *data)
         }
     }
 
-    test_smbios_ep_address(data);
-    test_smbios_ep_table(data);
+    test_smbios_entry_point(data);
     test_smbios_structs(data);
 
     qtest_quit(global_qtest);