Blame SOURCES/kvm-i440fx-test-verify-firmware-under-4G-and-1M-both-bio.patch

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From 473a279de264f7d56a41ac77aa9db4d783733f34 Mon Sep 17 00:00:00 2001
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From: Laszlo Ersek <lersek@redhat.com>
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Date: Sat, 11 Jan 2014 18:00:07 +0100
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Subject: [PATCH 17/22] i440fx-test: verify firmware under 4G and 1M, both -bios and -pflash
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RH-Author: Laszlo Ersek <lersek@redhat.com>
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Message-id: <1389463208-6278-18-git-send-email-lersek@redhat.com>
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Patchwork-id: 56631
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O-Subject: [RHEL-7.0 qemu-kvm PATCH 17/18] i440fx-test: verify firmware under 4G and 1M, both -bios and -pflash
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Bugzilla: 1032346
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Amos Kong <akong@redhat.com>
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RH-Acked-by: Andrew Jones <drjones@redhat.com>
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Check whether the firmware is not hidden by other memory regions.
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Qemu is started in paused mode: it shouldn't try to interpret generated
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garbage.
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Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 3bcc77ae9935c8c3d10f63492af81f1d7d99d492)
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---
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 tests/i440fx-test.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++----
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 1 file changed, 75 insertions(+), 6 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 tests/i440fx-test.c |   81 +++++++++++++++++++++++++++++++++++++++++++++++----
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 1 files changed, 75 insertions(+), 6 deletions(-)
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diff --git a/tests/i440fx-test.c b/tests/i440fx-test.c
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index b6e0cd3..fa3e3d6 100644
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--- a/tests/i440fx-test.c
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+++ b/tests/i440fx-test.c
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@@ -35,6 +35,11 @@ typedef struct TestData
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     int num_cpus;
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 } TestData;
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+typedef struct FirmwareTestFixture {
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+    /* decides whether we're testing -bios or -pflash */
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+    bool is_bios;
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+} FirmwareTestFixture;
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+
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 static QPCIBus *test_start_get_bus(const TestData *s)
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 {
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     char *cmdline;
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@@ -278,6 +283,7 @@ static void test_i440fx_pam(gconstpointer opaque)
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 }
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 #define BLOB_SIZE ((size_t)65536)
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+#define ISA_BIOS_MAXSZ ((size_t)(128 * 1024))
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 /* Create a blob file, and return its absolute pathname as a dynamically
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  * allocated string.
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@@ -326,23 +332,86 @@ static char *create_blob_file(void)
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     return ret == -1 ? NULL : pathname;
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 }
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-int main(int argc, char **argv)
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+static void test_i440fx_firmware(FirmwareTestFixture *fixture,
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+                                 gconstpointer user_data)
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 {
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-    char *fw_pathname;
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-    TestData data;
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-    int ret;
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-
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-    g_test_init(&argc, &argv, NULL);
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+    char *fw_pathname, *cmdline;
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+    uint8_t *buf;
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+    size_t i, isa_bios_size;
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     fw_pathname = create_blob_file();
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     g_assert(fw_pathname != NULL);
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+
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+    /* Better hope the user didn't put metacharacters in TMPDIR and co. */
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+    cmdline = g_strdup_printf("-S %s %s",
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+                              fixture->is_bios ? "-bios" : "-pflash",
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+                              fw_pathname);
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+    g_test_message("qemu cmdline: %s", cmdline);
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+    qtest_start(cmdline);
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+    g_free(cmdline);
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+
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+    /* Qemu has loaded the firmware (because qtest_start() only returns after
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+     * the QMP handshake completes). We must unlink the firmware blob right
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+     * here, because any assertion firing below would leak it in the
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+     * filesystem. This is also the reason why we recreate the blob every time
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+     * this function is invoked.
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+     */
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     unlink(fw_pathname);
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     g_free(fw_pathname);
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+    /* check below 4G */
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+    buf = g_malloc0(BLOB_SIZE);
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+    memread(0x100000000ULL - BLOB_SIZE, buf, BLOB_SIZE);
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+    for (i = 0; i < BLOB_SIZE; ++i) {
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+        g_assert_cmphex(buf[i], ==, (uint8_t)i);
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+    }
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+
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+    /* check in ISA space too */
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+    memset(buf, 0, BLOB_SIZE);
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+    isa_bios_size = ISA_BIOS_MAXSZ < BLOB_SIZE ? ISA_BIOS_MAXSZ : BLOB_SIZE;
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+    memread(0x100000 - isa_bios_size, buf, isa_bios_size);
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+    for (i = 0; i < isa_bios_size; ++i) {
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+        g_assert_cmphex(buf[i], ==,
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+                        (uint8_t)((BLOB_SIZE - isa_bios_size) + i));
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+    }
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+
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+    g_free(buf);
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+    qtest_end();
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+}
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+
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+static void add_firmware_test(const char *testpath,
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+                              void (*setup_fixture)(FirmwareTestFixture *f,
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+                                                    gconstpointer test_data))
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+{
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+    g_test_add(testpath, FirmwareTestFixture, NULL, setup_fixture,
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+               test_i440fx_firmware, NULL);
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+}
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+
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+static void request_bios(FirmwareTestFixture *fixture,
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+                         gconstpointer user_data)
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+{
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+    fixture->is_bios = true;
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+}
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+
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+static void request_pflash(FirmwareTestFixture *fixture,
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+                           gconstpointer user_data)
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+{
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+    fixture->is_bios = false;
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+}
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+
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+int main(int argc, char **argv)
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+{
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+    TestData data;
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+    int ret;
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+
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+    g_test_init(&argc, &argv, NULL);
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+
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     data.num_cpus = 1;
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     g_test_add_data_func("/i440fx/defaults", &data, test_i440fx_defaults);
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     g_test_add_data_func("/i440fx/pam", &data, test_i440fx_pam);
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+    add_firmware_test("/i440fx/firmware/bios", request_bios);
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+    add_firmware_test("/i440fx/firmware/pflash", request_pflash);
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     ret = g_test_run();
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     return ret;
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-- 
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1.7.1
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