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-rw-r--r--disk/Makefile2
-rw-r--r--disk/part.c28
-rw-r--r--disk/part_amiga.c399
-rw-r--r--disk/part_amiga.h157
-rw-r--r--disk/part_dos.h6
-rw-r--r--disk/part_iso.c1
-rw-r--r--disk/part_mac.h3
7 files changed, 594 insertions, 2 deletions
diff --git a/disk/Makefile b/disk/Makefile
index 7b80174f5..39677f1e2 100644
--- a/disk/Makefile
+++ b/disk/Makefile
@@ -27,7 +27,7 @@ include $(TOPDIR)/config.mk
LIB = libdisk.a
-OBJS = part.o part_mac.o part_dos.o part_iso.o
+OBJS = part.o part_mac.o part_dos.o part_iso.o part_amiga.o
all: $(LIB)
diff --git a/disk/part.c b/disk/part.c
index 99fe0db9f..70511ca06 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -106,7 +106,8 @@ void dev_print (block_dev_desc_t *dev_desc)
#if defined(CONFIG_MAC_PARTITION) || \
defined(CONFIG_DOS_PARTITION) || \
- defined(CONFIG_ISO_PARTITION)
+ defined(CONFIG_ISO_PARTITION) || \
+ defined(CONFIG_AMIGA_PARTITION)
void init_part (block_dev_desc_t * dev_desc)
{
@@ -130,6 +131,13 @@ void init_part (block_dev_desc_t * dev_desc)
return;
}
#endif
+
+#ifdef CONFIG_AMIGA_PARTITION
+ if (test_part_amiga(dev_desc) == 0) {
+ dev_desc->part_type = PART_TYPE_AMIGA;
+ return;
+ }
+#endif
}
@@ -162,6 +170,16 @@ int get_partition_info (block_dev_desc_t *dev_desc, int part, disk_partition_t *
}
break;
#endif
+
+#ifdef CONFIG_AMIGA_PARTITION
+ case PART_TYPE_AMIGA:
+ if (get_partition_info_amiga(dev_desc, part, info) == 0)
+ {
+ PRINTF ("## Valid Amiga partition found ##\n");
+ return (0);
+ }
+ break;
+#endif
default:
break;
}
@@ -215,6 +233,14 @@ void print_part (block_dev_desc_t * dev_desc)
print_part_iso (dev_desc);
return;
#endif
+
+#ifdef CONFIG_AMIGA_PARTITION
+ case PART_TYPE_AMIGA:
+ PRINTF ("## Testing for a valid Amiga partition ##\n");
+ print_part_header ("AMIGA", dev_desc);
+ print_part_amiga (dev_desc);
+ return;
+#endif
}
puts ("## Unknown partition table\n");
}
diff --git a/disk/part_amiga.c b/disk/part_amiga.c
new file mode 100644
index 000000000..aafbcd84c
--- /dev/null
+++ b/disk/part_amiga.c
@@ -0,0 +1,399 @@
+/*
+ * (C) Copyright 2001
+ * Hans-Joerg Frieden, Hyperion Entertainment
+ * Hans-JoergF@hyperion-entertainment.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 (at your option) 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <common.h>
+#include <command.h>
+#include <ide.h>
+#include <cmd_disk.h>
+#include "part_amiga.h"
+
+#if ((CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI)) && defined(CONFIG_AMIGA_PARTITION)
+
+#undef AMIGA_DEBUG
+
+#ifdef AMIGA_DEBUG
+#define PRINTF(fmt, args...) printf(fmt ,##args)
+#else
+#define PRINTF(fmt, args...)
+#endif
+
+struct block_header
+{
+ u32 id;
+ u32 summed_longs;
+ s32 chk_sum;
+};
+
+static unsigned char block_buffer[DEFAULT_SECTOR_SIZE];
+static struct rigid_disk_block rdb = {0};
+static struct bootcode_block bootcode = {0};
+
+/*
+ * Copy a bcpl to a c string
+ */
+static void bcpl_strcpy(char *to, char *from)
+{
+ int len = *from++;
+
+ while (len)
+ {
+ *to++ = *from++;
+ len--;
+ }
+ *to = 0;
+}
+
+/*
+ * Print a BCPL String. BCPL strings start with a byte with the length
+ * of the string, and don't contain a terminating nul character
+ */
+static void bstr_print(char *string)
+{
+ int len = *string++;
+ char buffer[256];
+ int i;
+
+ i = 0;
+ while (len)
+ {
+ buffer[i++] = *string++;
+ len--;
+ }
+
+ buffer[i] = 0;
+ printf("%-10s", buffer);
+}
+
+/*
+ * Sum a block. The checksum of a block must end up at zero
+ * to be valid. The chk_sum field is selected so that adding
+ * it yields zero.
+ */
+int sum_block(struct block_header *header)
+{
+ s32 *block = (s32 *)header;
+ u32 i;
+ s32 sum = 0;
+
+ for (i = 0; i < header->summed_longs; i++)
+ sum += *block++;
+
+ return (sum != 0);
+}
+
+/*
+ * Print an AmigaOS disk type. Disk types are a four-byte identifier
+ * describing the file system. They are usually written as a three-letter
+ * word followed by a backslash and a version number. For example,
+ * DOS\0 would be the original file system. SFS\0 would be SmartFileSystem.
+ * DOS\1 is FFS.
+ */
+static void print_disk_type(u32 disk_type)
+{
+ char buffer[6];
+ buffer[0] = (disk_type & 0xFF000000)>>24;
+ buffer[1] = (disk_type & 0x00FF0000)>>16;
+ buffer[2] = (disk_type & 0x0000FF00)>>8;
+ buffer[3] = '\\';
+ buffer[4] = (disk_type & 0x000000FF) + '0';
+ buffer[5] = 0;
+ printf("%s", buffer);
+}
+
+/*
+ * Print the info contained within the given partition block
+ */
+static void print_part_info(struct partition_block *p)
+{
+ struct amiga_part_geometry *g;
+
+ g = (struct amiga_part_geometry *)&(p->environment);
+
+ bstr_print(p->drive_name);
+ printf("%6d\t%6d\t",
+ g->low_cyl * g->block_per_track * g->surfaces ,
+ (g->high_cyl - g->low_cyl + 1) * g->block_per_track * g->surfaces - 1);
+ print_disk_type(g->dos_type);
+ printf("\t%5d\n", g->boot_priority);
+}
+
+/*
+ * Search for the Rigid Disk Block. The rigid disk block is required
+ * to be within the first 16 blocks of a drive, needs to have
+ * the ID AMIGA_ID_RDISK ('RDSK') and needs to have a valid
+ * sum-to-zero checksum
+ */
+struct rigid_disk_block *get_rdisk(block_dev_desc_t *dev_desc)
+{
+ int i;
+ int limit;
+ char *s;
+
+ s = getenv("amiga_scanlimit");
+ if (s)
+ limit = atoi(s);
+ else
+ limit = AMIGA_BLOCK_LIMIT;
+
+ for (i=0; i<limit; i++)
+ {
+ ulong res = dev_desc->block_read(dev_desc->dev, i, 1,
+ (ulong *)block_buffer);
+ if (res == 1)
+ {
+ struct rigid_disk_block *trdb = (struct rigid_disk_block *)block_buffer;
+ if (trdb->id == AMIGA_ID_RDISK)
+ {
+ PRINTF("Rigid disk block suspect at %d, checking checksum\n",i);
+ if (sum_block((struct block_header *)block_buffer) == 0)
+ {
+ PRINTF("FOUND\n");
+ memcpy(&rdb, trdb, sizeof(struct rigid_disk_block));
+ return (struct rigid_disk_block *)&rdb;
+ }
+ }
+ }
+ }
+ PRINTF("Done scanning, no RDB found\n");
+ return NULL;
+}
+
+/*
+ * Search for boot code
+ * Again, the first boot block must be located somewhere in the first 16 blocks, or rooted in the
+ * Ridgid disk block
+ */
+
+struct bootcode_block *get_bootcode(block_dev_desc_t *dev_desc)
+{
+ int i;
+ int limit;
+ char *s;
+
+ s = getenv("amiga_scanlimit");
+ if (s)
+ limit = atoi(s);
+ else
+ limit = AMIGA_BLOCK_LIMIT;
+
+ PRINTF("Scanning for BOOT from 0 to %d\n", limit);
+
+ for (i = 0; i < limit; i++)
+ {
+ ulong res = dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)block_buffer);
+ if (res == 1)
+ {
+ struct bootcode_block *boot = (struct bootcode_block *)block_buffer;
+ if (boot->id == AMIGA_ID_BOOT)
+ {
+ PRINTF("BOOT block at %d, checking checksum\n", i);
+ if (sum_block((struct block_header *)block_buffer) == 0)
+ {
+ PRINTF("Found valid bootcode block\n");
+ memcpy(&bootcode, boot, sizeof(struct bootcode_block));
+ return &bootcode;
+ }
+ }
+ }
+ }
+
+ PRINTF("No boot code found on disk\n");
+ return 0;
+}
+
+/*
+ * Test if the given partition has an Amiga partition table/Rigid
+ * Disk block
+ */
+int test_part_amiga(block_dev_desc_t *dev_desc)
+{
+ struct rigid_disk_block *rdb;
+ struct bootcode_block *bootcode;
+
+ PRINTF("test_part_amiga: Testing for an Amiga RDB partition\n");
+
+ rdb = get_rdisk(dev_desc);
+ if (rdb)
+ {
+ bootcode = get_bootcode(dev_desc);
+ if (bootcode)
+ PRINTF("test_part_amiga: bootable Amiga disk\n");
+ else
+ PRINTF("test_part_amiga: non-bootable Amiga disk\n");
+
+ return 0;
+ }
+ else
+ {
+ PRINTF("test_part_amiga: no RDB found\n");
+ return -1;
+ }
+
+}
+
+/*
+ * Find partition number partnum on the given drive.
+ */
+static struct partition_block *find_partition(block_dev_desc_t *dev_desc, int partnum)
+{
+ struct rigid_disk_block *rdb;
+ struct partition_block *p;
+ u32 block;
+
+ PRINTF("Trying to find partition block %d\n", partnum);
+ rdb = get_rdisk(dev_desc);
+ if (!rdb)
+ {
+ PRINTF("find_partition: no rdb found\n");
+ return NULL;
+ }
+
+ PRINTF("find_partition: Scanning partition list\n");
+
+ block = rdb->partition_list;
+ PRINTF("find_partition: partition list at 0x%x\n", block);
+
+ while (block != 0xFFFFFFFF)
+ {
+ ulong res = dev_desc->block_read(dev_desc->dev, block, 1,
+ (ulong *)block_buffer);
+ if (res == 1)
+ {
+ p = (struct partition_block *)block_buffer;
+ if (p->id == AMIGA_ID_PART)
+ {
+ PRINTF("PART block suspect at 0x%x, checking checksum\n",block);
+ if (sum_block((struct block_header *)p) == 0)
+ {
+ if (partnum == 0) break;
+ else
+ {
+ partnum--;
+ block = p->next;
+ }
+ }
+ } else block = 0xFFFFFFFF;
+ } else block = 0xFFFFFFFF;
+ }
+
+ if (block == 0xFFFFFFFF)
+ {
+ PRINTF("PART block not found\n");
+ return NULL;
+ }
+
+ return (struct partition_block *)block_buffer;
+}
+
+/*
+ * Get info about a partition
+ */
+int get_partition_info_amiga (block_dev_desc_t *dev_desc, int part, disk_partition_t *info)
+{
+ struct partition_block *p = find_partition(dev_desc, part-1);
+ struct amiga_part_geometry *g;
+ u32 disk_type;
+
+ if (!p) return -1;
+
+ g = (struct amiga_part_geometry *)&(p->environment);
+ info->start = g->low_cyl * g->block_per_track * g->surfaces;
+ info->size = (g->high_cyl - g->low_cyl + 1) * g->block_per_track * g->surfaces - 1;
+ info->blksz = rdb.block_bytes;
+ bcpl_strcpy(info->name, p->drive_name);
+
+
+ disk_type = g->dos_type;
+
+ info->type[0] = (disk_type & 0xFF000000)>>24;
+ info->type[1] = (disk_type & 0x00FF0000)>>16;
+ info->type[2] = (disk_type & 0x0000FF00)>>8;
+ info->type[3] = '\\';
+ info->type[4] = (disk_type & 0x000000FF) + '0';
+ info->type[5] = 0;
+
+ return 0;
+}
+
+void print_part_amiga (block_dev_desc_t *dev_desc)
+{
+ struct rigid_disk_block *rdb;
+ struct bootcode_block *boot;
+ struct partition_block *p;
+ u32 block;
+ int i = 1;
+
+ rdb = get_rdisk(dev_desc);
+ if (!rdb)
+ {
+ PRINTF("print_part_amiga: no rdb found\n");
+ return;
+ }
+
+ PRINTF("print_part_amiga: Scanning partition list\n");
+
+ block = rdb->partition_list;
+ PRINTF("print_part_amiga: partition list at 0x%x\n", block);
+
+ printf("Summary: DiskBlockSize: %d\n"
+ " Cylinders : %d\n"
+ " Sectors/Track: %d\n"
+ " Heads : %d\n\n",
+ rdb->block_bytes, rdb->cylinders, rdb->sectors,
+ rdb->heads);
+
+ printf(" First Num. \n"
+ "Nr. Part. Name Block Block Type Boot Priority\n");
+
+ while (block != 0xFFFFFFFF)
+ {
+ ulong res;
+
+ PRINTF("Trying to load block #0x%X\n", block);
+
+ res = dev_desc->block_read(dev_desc->dev, block, 1,
+ (ulong *)block_buffer);
+ if (res == 1)
+ {
+ p = (struct partition_block *)block_buffer;
+ if (p->id == AMIGA_ID_PART)
+ {
+ PRINTF("PART block suspect at 0x%x, checking checksum\n",block);
+ if (sum_block((struct block_header *)p) == 0)
+ {
+ printf("%-4d ", i); i++;
+ print_part_info(p);
+ block = p->next;
+ }
+ } else block = 0xFFFFFFFF;
+ } else block = 0xFFFFFFFF;
+ }
+
+ boot = get_bootcode(dev_desc);
+ if (boot)
+ {
+ printf("Disk is bootable\n");
+ }
+}
+
+#endif
diff --git a/disk/part_amiga.h b/disk/part_amiga.h
new file mode 100644
index 000000000..9e59be9fa
--- /dev/null
+++ b/disk/part_amiga.h
@@ -0,0 +1,157 @@
+/*
+ * (C) Copyright 2000
+ * Hans-Joerg Frieden, Hyperion Entertainment
+ * Hans-JoergF@hyperion-entertainment.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 (at your option) 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _DISK_PART_AMIGA_H
+#define _DISK_PART_AMIGA_H
+#include <common.h>
+
+#ifdef CONFIG_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_ */
diff --git a/disk/part_dos.h b/disk/part_dos.h
index 1a5c3777b..cc3fa81d7 100644
--- a/disk/part_dos.h
+++ b/disk/part_dos.h
@@ -25,7 +25,13 @@
#define _DISK_PART_DOS_H
+#ifdef CONFIG_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 DOS_PART_TBL_OFFSET 0x1be
#define DOS_PART_MAGIC_OFFSET 0x1fe
diff --git a/disk/part_iso.c b/disk/part_iso.c
index a98539da4..72259274c 100644
--- a/disk/part_iso.c
+++ b/disk/part_iso.c
@@ -97,6 +97,7 @@ int get_partition_info_iso_verb(block_dev_desc_t * dev_desc, int part_num, disk_
info->blksz=ppr->secsize_BE; /* assuming same block size for all entries */
PRINTF(" Lastsect:%08lx\n",lastsect);
for(i=blkaddr;i<lastsect;i++) {
+ PRINTF("Reading block %d\n", i);
if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *) tmpbuf) != 1)
return (-1);
if(ppr->desctype==0x00)
diff --git a/disk/part_mac.h b/disk/part_mac.h
index 0340fe8fe..fb1edac56 100644
--- a/disk/part_mac.h
+++ b/disk/part_mac.h
@@ -89,6 +89,9 @@ typedef struct mac_partition {
__u32 boot_cksum; /* boot code checksum */
uchar processor[16]; /* Type of Processor */
__u16 part_pad[188]; /* reserved */
+#ifdef CONFIG_ISO_PARTITION
+ uchar iso_dummy[2048];/* Reservere enough room for an ISO partition block to fit */
+#endif
} mac_partition_t;
#define MAC_STATUS_BOOTABLE 8 /* partition is bootable */