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-rw-r--r--common/cmd_fat.c231
1 files changed, 231 insertions, 0 deletions
diff --git a/common/cmd_fat.c b/common/cmd_fat.c
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--- /dev/null
+++ b/common/cmd_fat.c
@@ -0,0 +1,231 @@
+/*
+ * (C) Copyright 2002
+ * Richard Jones, rjones@nexus-tech.net
+ *
+ * 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
+ */
+
+/*
+ * Boot support
+ */
+#include <common.h>
+#include <command.h>
+#include <cmd_boot.h>
+#include <cmd_autoscript.h>
+#include <s_record.h>
+#include <net.h>
+#include <ata.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_FAT)
+
+#undef DEBUG
+
+#include <fat.h>
+
+extern block_dev_desc_t *ide_get_dev (int dev);
+
+int do_fat_fsload (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ long size;
+ unsigned long offset;
+ unsigned long count;
+
+ if (argc < 3) {
+ printf ("usage:fatload <filename> <addr> [bytes]\n");
+ return (0);
+ }
+
+ offset = simple_strtoul (argv[2], NULL, 16);
+ if (argc == 4)
+ count = simple_strtoul (argv[3], NULL, 16);
+ else
+ count = 0;
+
+ size = file_fat_read (argv[1], (unsigned char *) offset, count);
+
+ printf ("%ld bytes read\n", size);
+
+ return size;
+}
+
+int do_fat_ls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ char *filename = "/";
+ int ret;
+
+ if (argc == 2)
+ ret = file_fat_ls (argv[1]);
+ else
+ ret = file_fat_ls (filename);
+
+ return (ret);
+}
+
+int do_fat_fsinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int ret;
+
+ ret = 0;
+
+ printf ("FAT info: %d\n", file_fat_detectfs ());
+
+ return (ret);
+}
+
+#ifdef NOT_IMPLEMENTED_YET
+/* find first device whose first partition is a DOS filesystem */
+int find_fat_partition (void)
+{
+ int i, j;
+ block_dev_desc_t *dev_desc;
+ unsigned char *part_table;
+ unsigned char buffer[ATA_BLOCKSIZE];
+
+ for (i = 0; i < CFG_IDE_MAXDEVICE; i++) {
+ dev_desc = ide_get_dev (i);
+ if (!dev_desc) {
+ debug ("couldn't get ide device!\n");
+ return (-1);
+ }
+ if (dev_desc->part_type == PART_TYPE_DOS) {
+ if (dev_desc->
+ block_read (dev_desc->dev, 0, 1, (ulong *) buffer) != 1) {
+ debug ("can't perform block_read!\n");
+ return (-1);
+ }
+ part_table = &buffer[0x1be]; /* start with partition #4 */
+ for (j = 0; j < 4; j++) {
+ if ((part_table[4] == 1 || /* 12-bit FAT */
+ part_table[4] == 4 || /* 16-bit FAT */
+ part_table[4] == 6) && /* > 32Meg part */
+ part_table[0] == 0x80) { /* bootable? */
+ curr_dev = i;
+ part_offset = part_table[11];
+ part_offset <<= 8;
+ part_offset |= part_table[10];
+ part_offset <<= 8;
+ part_offset |= part_table[9];
+ part_offset <<= 8;
+ part_offset |= part_table[8];
+ debug ("found partition start at %ld\n", part_offset);
+ return (0);
+ }
+ part_table += 16;
+ }
+ }
+ }
+
+ debug ("no valid devices found!\n");
+ return (-1);
+}
+
+int
+do_fat_dump (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
+{
+ __u8 block[1024];
+ int ret;
+ int bknum;
+
+ ret = 0;
+
+ if (argc != 2) {
+ printf ("needs an argument!\n");
+ return (0);
+ }
+
+ bknum = simple_strtoul (argv[1], NULL, 10);
+
+ if (disk_read (0, bknum, block) != 0) {
+ printf ("Error: reading block\n");
+ return -1;
+ }
+ printf ("FAT dump: %d\n", bknum);
+ hexdump (512, block);
+
+ return (ret);
+}
+
+int disk_read (__u32 startblock, __u32 getsize, __u8 *bufptr)
+{
+ ulong tot;
+ block_dev_desc_t *dev_desc;
+
+ if (curr_dev < 0) {
+ if (find_fat_partition () != 0)
+ return (-1);
+ }
+
+ dev_desc = ide_get_dev (curr_dev);
+ if (!dev_desc) {
+ debug ("couldn't get ide device\n");
+ return (-1);
+ }
+
+ tot = dev_desc->block_read (0, startblock + part_offset,
+ getsize, (ulong *) bufptr);
+
+ /* should we do this here?
+ flush_cache ((ulong)buf, cnt*ide_dev_desc[device].blksz);
+ */
+
+ if (tot == getsize)
+ return (0);
+
+ debug ("unable to read from device!\n");
+
+ return (-1);
+}
+
+
+static int isprint (unsigned char ch)
+{
+ if (ch >= 32 && ch < 127)
+ return (1);
+
+ return (0);
+}
+
+
+void hexdump (int cnt, unsigned char *data)
+{
+ int i;
+ int run;
+ int offset;
+
+ offset = 0;
+ while (cnt) {
+ printf ("%04X : ", offset);
+ if (cnt >= 16)
+ run = 16;
+ else
+ run = cnt;
+ cnt -= run;
+ for (i = 0; i < run; i++)
+ printf ("%02X ", (unsigned int) data[i]);
+ printf (": ");
+ for (i = 0; i < run; i++)
+ printf ("%c", isprint (data[i]) ? data[i] : '.');
+ printf ("\n");
+ data = &data[16];
+ offset += run;
+ }
+}
+#endif /* NOT_IMPLEMENTED_YET */
+
+#endif /* CFG_CMD_FAT */