Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / arch / x86 / prefix / efiprefix.c

diff --git a/qemu/roms/ipxe/src/arch/x86/prefix/efiprefix.c b/qemu/roms/ipxe/src/arch/x86/prefix/efiprefix.c
new file mode 100644 (file)
index 0000000..b0bf99c
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86/prefix/efiprefix.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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; either version 2 of the
+ * License, or any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdlib.h>
+#include <errno.h>
+#include <ipxe/device.h>
+#include <ipxe/efi/efi.h>
+#include <ipxe/efi/efi_driver.h>
+#include <ipxe/efi/efi_snp.h>
+#include <ipxe/efi/efi_autoboot.h>
+
+/**
+ * EFI entry point
+ *
+ * @v image_handle     Image handle
+ * @v systab           System table
+ * @ret efirc          EFI return status code
+ */
+EFI_STATUS EFIAPI _efi_start ( EFI_HANDLE image_handle,
+                              EFI_SYSTEM_TABLE *systab ) {
+       EFI_STATUS efirc;
+       int rc;
+
+       /* Initialise EFI environment */
+       if ( ( efirc = efi_init ( image_handle, systab ) ) != 0 )
+               goto err_init;
+
+       /* Record autoboot device (if any) */
+       efi_set_autoboot();
+
+       /* Claim SNP devices for use by iPXE */
+       efi_snp_claim();
+
+       /* Call to main() */
+       if ( ( rc = main() ) != 0 ) {
+               efirc = EFIRC ( rc );
+               goto err_main;
+       }
+
+ err_main:
+       efi_snp_release();
+       efi_loaded_image->Unload ( image_handle );
+       efi_driver_reconnect_all();
+ err_init:
+       return efirc;
+}
+
+/**
+ * Probe EFI root bus
+ *
+ * @v rootdev          EFI root device
+ */
+static int efi_probe ( struct root_device *rootdev __unused ) {
+
+       return efi_driver_connect_all();
+}
+
+/**
+ * Remove EFI root bus
+ *
+ * @v rootdev          EFI root device
+ */
+static void efi_remove ( struct root_device *rootdev __unused ) {
+
+       efi_driver_disconnect_all();
+}
+
+/** EFI root device driver */
+static struct root_driver efi_root_driver = {
+       .probe = efi_probe,
+       .remove = efi_remove,
+};
+
+/** EFI root device */
+struct root_device efi_root_device __root_device = {
+       .dev = { .name = "EFI" },
+       .driver = &efi_root_driver,
+};