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-rw-r--r--include/grub/i386/pc/biosdisk.h109
1 files changed, 109 insertions, 0 deletions
diff --git a/include/grub/i386/pc/biosdisk.h b/include/grub/i386/pc/biosdisk.h
new file mode 100644
index 0000000..3d80716
--- /dev/null
+++ b/include/grub/i386/pc/biosdisk.h
@@ -0,0 +1,109 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2002,2005,2007,2008 Free Software Foundation, Inc.
+ *
+ * GRUB 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_BIOSDISK_MACHINE_HEADER
+#define GRUB_BIOSDISK_MACHINE_HEADER 1
+
+#include <grub/symbol.h>
+#include <grub/types.h>
+
+#define GRUB_BIOSDISK_FLAG_LBA 1
+#define GRUB_BIOSDISK_FLAG_CDROM 2
+
+#define GRUB_BIOSDISK_CDTYPE_NO_EMUL 0
+#define GRUB_BIOSDISK_CDTYPE_1_2_M 1
+#define GRUB_BIOSDISK_CDTYPE_1_44_M 2
+#define GRUB_BIOSDISK_CDTYPE_2_88_M 3
+#define GRUB_BIOSDISK_CDTYPE_HARDDISK 4
+
+#define GRUB_BIOSDISK_CDTYPE_MASK 0xF
+
+struct grub_biosdisk_data
+{
+ int drive;
+ unsigned long cylinders;
+ unsigned long heads;
+ unsigned long sectors;
+ unsigned long flags;
+};
+
+/* Drive Parameters. */
+struct grub_biosdisk_drp
+{
+ grub_uint16_t size;
+ grub_uint16_t flags;
+ grub_uint32_t cylinders;
+ grub_uint32_t heads;
+ grub_uint32_t sectors;
+ grub_uint64_t total_sectors;
+ grub_uint16_t bytes_per_sector;
+ /* ver 2.0 or higher */
+
+ union
+ {
+ grub_uint32_t EDD_configuration_parameters;
+
+ /* Pointer to the Device Parameter Table Extension (ver 3.0+). */
+ grub_uint32_t dpte_pointer;
+ };
+
+ /* ver 3.0 or higher */
+ grub_uint16_t signature_dpi;
+ grub_uint8_t length_dpi;
+ grub_uint8_t reserved[3];
+ grub_uint8_t name_of_host_bus[4];
+ grub_uint8_t name_of_interface_type[8];
+ grub_uint8_t interface_path[8];
+ grub_uint8_t device_path[16];
+ grub_uint8_t reserved2;
+ grub_uint8_t checksum;
+
+ /* XXX: This is necessary, because the BIOS of Thinkpad X20
+ writes a garbage to the tail of drive parameters,
+ regardless of a size specified in a caller. */
+ grub_uint8_t dummy[16];
+} GRUB_PACKED;
+
+struct grub_biosdisk_cdrp
+{
+ grub_uint8_t size;
+ grub_uint8_t media_type;
+ grub_uint8_t drive_no;
+ grub_uint8_t controller_no;
+ grub_uint32_t image_lba;
+ grub_uint16_t device_spec;
+ grub_uint16_t cache_seg;
+ grub_uint16_t load_seg;
+ grub_uint16_t length_sec512;
+ grub_uint8_t cylinders;
+ grub_uint8_t sectors;
+ grub_uint8_t heads;
+ grub_uint8_t dummy[16];
+} GRUB_PACKED;
+
+/* Disk Address Packet. */
+struct grub_biosdisk_dap
+{
+ grub_uint8_t length;
+ grub_uint8_t reserved;
+ grub_uint16_t blocks;
+ grub_uint32_t buffer;
+ grub_uint64_t block;
+} GRUB_PACKED;
+
+#endif /* ! GRUB_BIOSDISK_MACHINE_HEADER */