GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/disk/part_amiga.h

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+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2000
+ * Hans-Joerg Frieden, Hyperion Entertainment
+ * Hans-JoergF@hyperion-entertainment.com
+ */
+
+#ifndef _DISK_PART_AMIGA_H
+#define _DISK_PART_AMIGA_H
+#include <common.h>
+
+#if CONFIG_IS_ENABLED(ISO_PARTITION)
+/* Make the buffers bigger if ISO partition support is enabled -- CD-ROMS
+   have 2048 byte blocks */
+#define DEFAULT_SECTOR_SIZE   2048
+#else
+#define DEFAULT_SECTOR_SIZE	512
+#endif
+
+
+#define AMIGA_BLOCK_LIMIT 16
+
+/*
+ * Amiga disks have a very open structure. The head for the partition table information
+ * is stored somewhere within the first 16 blocks on disk, and is called the
+ * "RigidDiskBlock".
+ */
+
+struct rigid_disk_block
+{
+    u32 id;
+    u32 summed_longs;
+    s32 chk_sum;
+    u32 host_id;
+    u32 block_bytes;
+    u32 flags;
+    u32 bad_block_list;
+    u32 partition_list;
+    u32 file_sys_header_list;
+    u32 drive_init;
+    u32 bootcode_block;
+    u32 reserved_1[5];
+
+    /* Physical drive geometry */
+    u32 cylinders;
+    u32 sectors;
+    u32 heads;
+    u32 interleave;
+    u32 park;
+    u32 reserved_2[3];
+    u32 write_pre_comp;
+    u32 reduced_write;
+    u32 step_rate;
+    u32 reserved_3[5];
+
+    /* logical drive geometry */
+    u32 rdb_blocks_lo;
+    u32 rdb_blocks_hi;
+    u32 lo_cylinder;
+    u32 hi_cylinder;
+    u32 cyl_blocks;
+    u32 auto_park_seconds;
+    u32 high_rdsk_block;
+    u32 reserved_4;
+
+    char disk_vendor[8];
+    char disk_product[16];
+    char disk_revision[4];
+    char controller_vendor[8];
+    char controller_product[16];
+    char controller_revision[4];
+
+    u32 reserved_5[10];
+};
+
+/*
+ * Each partition on this drive is defined by such a block
+ */
+
+struct partition_block
+{
+    u32 id;
+    u32 summed_longs;
+    s32 chk_sum;
+    u32 host_id;
+    u32 next;
+    u32 flags;
+    u32 reserved_1[2];
+    u32 dev_flags;
+    char drive_name[32];
+    u32 reserved_2[15];
+    u32 environment[17];
+    u32 reserved_3[15];
+};
+
+struct bootcode_block
+{
+    u32   id;
+    u32   summed_longs;
+    s32   chk_sum;
+    u32   host_id;
+    u32   next;
+    u32   load_data[123];
+};
+
+
+#define AMIGA_ID_RDISK                  0x5244534B
+#define AMIGA_ID_PART                   0x50415254
+#define AMIGA_ID_BOOT                   0x424f4f54
+
+/*
+ * The environment array in the partition block
+ * describes the partition
+ */
+
+struct amiga_part_geometry
+{
+    u32 table_size;
+    u32 size_blocks;
+    u32 unused1;
+    u32 surfaces;
+    u32 sector_per_block;
+    u32 block_per_track;
+    u32 reserved;
+    u32 prealloc;
+    u32 interleave;
+    u32 low_cyl;
+    u32 high_cyl;
+    u32 num_buffers;
+    u32 buf_mem_type;
+    u32 max_transfer;
+    u32 mask;
+    s32 boot_priority;
+    u32 dos_type;
+    u32 baud;
+    u32 control;
+    u32 boot_blocks;
+};
+
+#endif /* _DISK_PART_AMIGA_H_ */