Subject: [PATCH] fw-cfg: QEMU_FW_CFG

Targets VMAware check: QEMU_FW_CFG

The fw_cfg device signature, which names QEMU literally.

Applies to QEMU v11.1.1. Apply from the source root with:
    patch -p1 < 04-fw-cfg.patch

---
diff --git a/hw/i386/fw_cfg.c b/hw/i386/fw_cfg.c
index 5903994..e5fddbc 100644
--- a/hw/i386/fw_cfg.c
+++ b/hw/i386/fw_cfg.c
@@ -77,7 +77,7 @@ void fw_cfg_build_smbios(PCMachineState *pcms, FWCfgState *fw_cfg,
 
     if (pcmc->smbios_defaults) {
         /* These values are guest ABI, do not change */
-        smbios_set_defaults("QEMU", mc->desc, mc->name);
+        smbios_set_defaults("Unknown", mc->desc, mc->name);
     }
 
     /* tell smbios about cpuid version and features */
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index b057d87..a253fe8 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -56,7 +56,7 @@
 #define FW_CFG_DMA_CTL_SELECT  0x08
 #define FW_CFG_DMA_CTL_WRITE   0x10
 
-#define FW_CFG_DMA_SIGNATURE 0x51454d5520434647ULL /* "QEMU CFG" */
+#define FW_CFG_DMA_SIGNATURE 0x51434f4d20434647ULL /* "QCOM CFG" */
 
 struct FWCfgEntry {
     uint32_t len;
@@ -1002,7 +1002,7 @@ static void fw_cfg_common_realize(DeviceState *dev, Error **errp)
         return;
     }
 
-    fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4);
+    fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4); // "QEMU"
     fw_cfg_add_bytes(s, FW_CFG_UUID, &qemu_uuid, 16);
     fw_cfg_add_i16(s, FW_CFG_NOGRAPHIC, (uint16_t)!machine->enable_graphics);
     fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)(machine->boot_config.has_menu && machine->boot_config.menu));
diff --git a/include/standard-headers/linux/qemu_fw_cfg.h b/include/standard-headers/linux/qemu_fw_cfg.h
index cb93f66..0527126 100644
--- a/include/standard-headers/linux/qemu_fw_cfg.h
+++ b/include/standard-headers/linux/qemu_fw_cfg.h
@@ -71,7 +71,7 @@ struct fw_cfg_file {
 #define FW_CFG_DMA_CTL_SELECT	0x08
 #define FW_CFG_DMA_CTL_WRITE	0x10
 
-#define FW_CFG_DMA_SIGNATURE    0x51454d5520434647ULL /* "QEMU CFG" */
+#define FW_CFG_DMA_SIGNATURE    0x51434f4d20434647ULL /* "QCOM CFG" */
 
 /* Control as first field allows for different structures selected by this
  * field, which might be useful in the future