filesystem support

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1403 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

3 files changed, 561 insertions, 0 deletions

diff --git a/src/include/fs/fs.h b/src/include/fs/fs.h
new file mode 100644
index 0000000000..b23a1b5158
--- /dev/null
+++ b/src/include/fs/fs.h
@@ -0,0 +1,222 @@
+/* GRUB compatibility header */
+
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1999,2000,2001,2003   Free Software Foundation, Inc.
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <fs/vfs.h>
+
+/* This disables some portion of code */
+#define STAGE1_5 1
+
+static inline int 
+substring (const char *s1, const char *s2)
+{
+  while (*s1 == *s2)
+    {
+      /* The strings match exactly. */
+      if (! *(s1++))
+	return 0;
+      s2 ++;
+    }
+
+  /* S1 is a substring of S2. */
+  if (*s1 == 0)
+    return -1;
+
+  /* S1 isn't a substring. */
+  return 1;
+}
+
+#define MAXINT 0x7fffffff
+
+/* This is only used by fsys_* to determine if it's hard disk. If it is,
+ * they try to guess filesystem type by partition type. I guess it is 
+ * not necessory, so hardcoded to 0 (first floppy) --ts1 */
+#define current_drive 0
+
+/* Ditto */
+#define current_slice 0
+
+extern unsigned long part_start;
+extern unsigned long part_length;
+extern int filepos;
+extern int filemax;
+extern int fsmax;
+
+/* Error codes (descriptions are in common.c) */
+typedef enum
+{
+  ERR_NONE = 0,
+  ERR_BAD_FILENAME,
+  ERR_BAD_FILETYPE,
+  ERR_BAD_GZIP_DATA,
+  ERR_BAD_GZIP_HEADER,
+  ERR_BAD_PART_TABLE,
+  ERR_BAD_VERSION,
+  ERR_BELOW_1MB,
+  ERR_BOOT_COMMAND,
+  ERR_BOOT_FAILURE,
+  ERR_BOOT_FEATURES,
+  ERR_DEV_FORMAT,
+  ERR_DEV_VALUES,
+  ERR_EXEC_FORMAT,
+  ERR_FILELENGTH,
+  ERR_FILE_NOT_FOUND,
+  ERR_FSYS_CORRUPT,
+  ERR_FSYS_MOUNT,
+  ERR_GEOM,
+  ERR_NEED_LX_KERNEL,
+  ERR_NEED_MB_KERNEL,
+  ERR_NO_DISK,
+  ERR_NO_PART,
+  ERR_NUMBER_PARSING,
+  ERR_OUTSIDE_PART,
+  ERR_READ,
+  ERR_SYMLINK_LOOP,
+  ERR_UNRECOGNIZED,
+  ERR_WONT_FIT,
+  ERR_WRITE,
+  ERR_BAD_ARGUMENT,
+  ERR_UNALIGNED,
+  ERR_PRIVILEGED,
+  ERR_DEV_NEED_INIT,
+  ERR_NO_DISK_SPACE,
+  ERR_NUMBER_OVERFLOW,
+
+  MAX_ERR_NUM
+} fs_error_t;
+
+extern fs_error_t errnum;
+
+/* instrumentation variables */
+/* (Not used in FILO) */
+extern void (*disk_read_hook) (int, int, int);
+extern void (*disk_read_func) (int, int, int);
+
+#define FSYS_BUFLEN 0x8000
+extern char FSYS_BUF[FSYS_BUFLEN];
+
+#define print_possibilities 0
+
+#define SECTOR_SIZE 512
+#define SECTOR_BITS 9
+
+#ifdef CONFIG_FS_FAT
+int fat_mount (void);
+int fat_read (char *buf, int len);
+int fat_dir (char *dirname);
+#endif
+
+#if CONFIG_FS_EXT2 == 1
+int ext2fs_mount (void);
+int ext2fs_read (char *buf, int len);
+int ext2fs_dir (char *dirname);
+#endif
+
+#ifdef CONFIG_FS_MINIX
+int minix_mount (void);
+int minix_read (char *buf, int len);
+int minix_dir (char *dirname);
+#endif
+
+#ifdef CONFIG_FS_REISERFS
+int reiserfs_mount (void);
+int reiserfs_read (char *buf, int len);
+int reiserfs_dir (char *dirname);
+int reiserfs_embed (int *start_sector, int needed_sectors);
+#endif
+
+#ifdef CONFIG_FS_JFS
+int jfs_mount (void);
+int jfs_read (char *buf, int len);
+int jfs_dir (char *dirname);
+int jfs_embed (int *start_sector, int needed_sectors);
+#endif
+
+#ifdef CONFIG_FS_XFS
+int xfs_mount (void);
+int xfs_read (char *buf, int len);
+int xfs_dir (char *dirname);
+#endif
+
+#if CONFIG_FS_ISO9660 == 1
+int iso9660_mount (void);
+int iso9660_read (char *buf, int len);
+int iso9660_dir (char *dirname);
+#endif
+
+/* This is not a flag actually, but used as if it were a flag.  */
+#define PC_SLICE_TYPE_HIDDEN_FLAG	0x10
+
+#define PC_SLICE_TYPE_NONE         	0
+#define PC_SLICE_TYPE_FAT12        	1
+#define PC_SLICE_TYPE_FAT16_LT32M  	4
+#define PC_SLICE_TYPE_EXTENDED     	5
+#define PC_SLICE_TYPE_FAT16_GT32M  	6
+#define PC_SLICE_TYPE_FAT32		0xb
+#define PC_SLICE_TYPE_FAT32_LBA		0xc
+#define PC_SLICE_TYPE_FAT16_LBA		0xe
+#define PC_SLICE_TYPE_WIN95_EXTENDED	0xf
+#define PC_SLICE_TYPE_EZD        	0x55
+#define PC_SLICE_TYPE_MINIX		0x80
+#define PC_SLICE_TYPE_LINUX_MINIX	0x81
+#define PC_SLICE_TYPE_EXT2FS       	0x83
+#define PC_SLICE_TYPE_LINUX_EXTENDED	0x85
+#define PC_SLICE_TYPE_VSTAFS		0x9e
+#define PC_SLICE_TYPE_DELL_UTIL		0xde
+#define PC_SLICE_TYPE_LINUX_RAID	0xfd
+
+/* For convinience.  */
+/* Check if TYPE is a FAT partition type. Clear the hidden flag before
+   the check, to allow the user to mount a hidden partition in GRUB.  */
+#define IS_PC_SLICE_TYPE_FAT(type)	\
+  ({ int _type = (type) & ~PC_SLICE_TYPE_HIDDEN_FLAG; \
+     _type == PC_SLICE_TYPE_FAT12 \
+     || _type == PC_SLICE_TYPE_FAT16_LT32M \
+     || _type == PC_SLICE_TYPE_FAT16_GT32M \
+     || _type == PC_SLICE_TYPE_FAT16_LBA \
+     || _type == PC_SLICE_TYPE_FAT32 \
+     || _type == PC_SLICE_TYPE_FAT32_LBA \
+     || _type == PC_SLICE_TYPE_DELL_UTIL; })
+
+#define IS_PC_SLICE_TYPE_MINIX(type) \
+  (((type) == PC_SLICE_TYPE_MINIX)	\
+   || ((type) == PC_SLICE_TYPE_LINUX_MINIX))
+
+#define IS_PC_SLICE_TYPE_BSD_WITH_FS(type,fs) 0
+
+/* possible values for the *BSD-style partition type */
+#define	FS_UNUSED	0	/* unused */
+#define	FS_SWAP		1	/* swap */
+#define	FS_V6		2	/* Sixth Edition */
+#define	FS_V7		3	/* Seventh Edition */
+#define	FS_SYSV		4	/* System V */
+#define	FS_V71K		5	/* V7 with 1K blocks (4.1, 2.9) */
+#define	FS_V8		6	/* Eighth Edition, 4K blocks */
+#define	FS_BSDFFS	7	/* 4.2BSD fast file system */
+#define	FS_MSDOS	8	/* MSDOS file system */
+#define	FS_BSDLFS	9	/* 4.4BSD log-structured file system */
+#define	FS_OTHER	10	/* in use, but unknown/unsupported */
+#define	FS_HPFS		11	/* OS/2 high-performance file system */
+#define	FS_ISO9660	12	/* ISO 9660, normally CD-ROM */
+#define	FS_BOOT		13	/* partition contains bootstrap */
+#define	FS_ADOS		14	/* AmigaDOS fast file system */
+#define	FS_HFS		15	/* Macintosh HFS */
+#define	FS_FILECORE	16	/* Acorn Filecore Filing System */
+#define	FS_EXT2FS	17	/* Linux Extended 2 file system */
diff --git a/src/include/fs/iso9660.h b/src/include/fs/iso9660.h
new file mode 100644
index 0000000000..1c76800eb8
--- /dev/null
+++ b/src/include/fs/iso9660.h
@@ -0,0 +1,310 @@
+#ifndef _ISO9660_H
+#define _ISO9660_H
+
+/*
+ * The isofs filesystem constants/structures
+ */
+
+/* This part borrowed from the bsd386 isofs */
+#define ISODCL(from, to) (to - from + 1)
+
+struct iso_volume_descriptor {
+	char type[ISODCL(1,1)]; /* 711 */
+	char id[ISODCL(2,6)];
+	char version[ISODCL(7,7)];
+	char data[ISODCL(8,2048)];
+};
+
+#define ISO_SECTOR_BITS              (11)
+#define ISO_SECTOR_SIZE              (1<<ISO_SECTOR_BITS)
+
+#define ISO_REGULAR     1       /* regular file */
+#define ISO_DIRECTORY   2       /* directory    */
+#define ISO_OTHER       0       /* other file (with Rock Ridge) */
+
+#define RR_FLAG_PX      0x01    /* have POSIX file attributes */
+#define RR_FLAG_NM      0x08    /* have alternate file name   */
+
+/* POSIX file attributes for Rock Ridge extensions */
+#define POSIX_S_IFMT    0xF000
+#define POSIX_S_IFREG   0x8000
+#define POSIX_S_IFDIR   0x4000
+
+/* volume descriptor types */
+#define ISO_VD_PRIMARY 1
+#define ISO_VD_SUPPLEMENTARY 2
+#define ISO_VD_END 255
+
+#define ISO_STANDARD_ID "CD001"
+
+struct iso_primary_descriptor {
+	char type			[ISODCL (  1,   1)]; /* 711 */
+	char id				[ISODCL (  2,   6)];
+	char version			[ISODCL (  7,   7)]; /* 711 */
+	char unused1			[ISODCL (  8,   8)];
+	char system_id			[ISODCL (  9,  40)]; /* achars */
+	char volume_id			[ISODCL ( 41,  72)]; /* dchars */
+	char unused2			[ISODCL ( 73,  80)];
+	char volume_space_size		[ISODCL ( 81,  88)]; /* 733 */
+	char unused3			[ISODCL ( 89, 120)];
+	char volume_set_size		[ISODCL (121, 124)]; /* 723 */
+	char volume_sequence_number	[ISODCL (125, 128)]; /* 723 */
+	char logical_block_size		[ISODCL (129, 132)]; /* 723 */
+	char path_table_size		[ISODCL (133, 140)]; /* 733 */
+	char type_l_path_table		[ISODCL (141, 144)]; /* 731 */
+	char opt_type_l_path_table	[ISODCL (145, 148)]; /* 731 */
+	char type_m_path_table		[ISODCL (149, 152)]; /* 732 */
+	char opt_type_m_path_table	[ISODCL (153, 156)]; /* 732 */
+	char root_directory_record	[ISODCL (157, 190)]; /* 9.1 */
+	char volume_set_id		[ISODCL (191, 318)]; /* dchars */
+	char publisher_id		[ISODCL (319, 446)]; /* achars */
+	char preparer_id		[ISODCL (447, 574)]; /* achars */
+	char application_id		[ISODCL (575, 702)]; /* achars */
+	char copyright_file_id		[ISODCL (703, 739)]; /* 7.5 dchars */
+	char abstract_file_id		[ISODCL (740, 776)]; /* 7.5 dchars */
+	char bibliographic_file_id	[ISODCL (777, 813)]; /* 7.5 dchars */
+	char creation_date		[ISODCL (814, 830)]; /* 8.4.26.1 */
+	char modification_date		[ISODCL (831, 847)]; /* 8.4.26.1 */
+	char expiration_date		[ISODCL (848, 864)]; /* 8.4.26.1 */
+	char effective_date		[ISODCL (865, 881)]; /* 8.4.26.1 */
+	char file_structure_version	[ISODCL (882, 882)]; /* 711 */
+	char unused4			[ISODCL (883, 883)];
+	char application_data		[ISODCL (884, 1395)];
+	char unused5			[ISODCL (1396, 2048)];
+};
+
+/* Almost the same as the primary descriptor but two fields are specified */
+struct iso_supplementary_descriptor {
+	char type			[ISODCL (  1,   1)]; /* 711 */
+	char id				[ISODCL (  2,   6)];
+	char version			[ISODCL (  7,   7)]; /* 711 */
+	char flags			[ISODCL (  8,   8)]; /* 853 */
+	char system_id			[ISODCL (  9,  40)]; /* achars */
+	char volume_id			[ISODCL ( 41,  72)]; /* dchars */
+	char unused2			[ISODCL ( 73,  80)];
+	char volume_space_size		[ISODCL ( 81,  88)]; /* 733 */
+	char escape			[ISODCL ( 89, 120)]; /* 856 */
+	char volume_set_size		[ISODCL (121, 124)]; /* 723 */
+	char volume_sequence_number	[ISODCL (125, 128)]; /* 723 */
+	char logical_block_size		[ISODCL (129, 132)]; /* 723 */
+	char path_table_size		[ISODCL (133, 140)]; /* 733 */
+	char type_l_path_table		[ISODCL (141, 144)]; /* 731 */
+	char opt_type_l_path_table	[ISODCL (145, 148)]; /* 731 */
+	char type_m_path_table		[ISODCL (149, 152)]; /* 732 */
+	char opt_type_m_path_table	[ISODCL (153, 156)]; /* 732 */
+	char root_directory_record	[ISODCL (157, 190)]; /* 9.1 */
+	char volume_set_id		[ISODCL (191, 318)]; /* dchars */
+	char publisher_id		[ISODCL (319, 446)]; /* achars */
+	char preparer_id		[ISODCL (447, 574)]; /* achars */
+	char application_id		[ISODCL (575, 702)]; /* achars */
+	char copyright_file_id		[ISODCL (703, 739)]; /* 7.5 dchars */
+	char abstract_file_id		[ISODCL (740, 776)]; /* 7.5 dchars */
+	char bibliographic_file_id	[ISODCL (777, 813)]; /* 7.5 dchars */
+	char creation_date		[ISODCL (814, 830)]; /* 8.4.26.1 */
+	char modification_date		[ISODCL (831, 847)]; /* 8.4.26.1 */
+	char expiration_date		[ISODCL (848, 864)]; /* 8.4.26.1 */
+	char effective_date		[ISODCL (865, 881)]; /* 8.4.26.1 */
+	char file_structure_version	[ISODCL (882, 882)]; /* 711 */
+	char unused4			[ISODCL (883, 883)];
+	char application_data		[ISODCL (884, 1395)];
+	char unused5			[ISODCL (1396, 2048)];
+};
+
+
+#define HS_STANDARD_ID "CDROM"
+
+struct  hs_volume_descriptor {
+	char foo			[ISODCL (  1,   8)]; /* 733 */
+	char type			[ISODCL (  9,   9)]; /* 711 */
+	char id				[ISODCL ( 10,  14)];
+	char version			[ISODCL ( 15,  15)]; /* 711 */
+	char data[ISODCL(16,2048)];
+};
+
+
+struct hs_primary_descriptor {
+	char foo			[ISODCL (  1,   8)]; /* 733 */
+	char type			[ISODCL (  9,   9)]; /* 711 */
+	char id				[ISODCL ( 10,  14)];
+	char version			[ISODCL ( 15,  15)]; /* 711 */
+	char unused1			[ISODCL ( 16,  16)]; /* 711 */
+	char system_id			[ISODCL ( 17,  48)]; /* achars */
+	char volume_id			[ISODCL ( 49,  80)]; /* dchars */
+	char unused2			[ISODCL ( 81,  88)]; /* 733 */
+	char volume_space_size		[ISODCL ( 89,  96)]; /* 733 */
+	char unused3			[ISODCL ( 97, 128)]; /* 733 */
+	char volume_set_size		[ISODCL (129, 132)]; /* 723 */
+	char volume_sequence_number	[ISODCL (133, 136)]; /* 723 */
+	char logical_block_size		[ISODCL (137, 140)]; /* 723 */
+	char path_table_size		[ISODCL (141, 148)]; /* 733 */
+	char type_l_path_table		[ISODCL (149, 152)]; /* 731 */
+	char unused4			[ISODCL (153, 180)]; /* 733 */
+	char root_directory_record	[ISODCL (181, 214)]; /* 9.1 */
+};
+
+/* We use this to help us look up the parent inode numbers. */
+
+struct iso_path_table{
+	unsigned char  name_len[2];	/* 721 */
+	char extent[4];		/* 731 */
+	char  parent[2];	/* 721 */
+	char name[0];
+} __attribute__((packed));
+
+/* high sierra is identical to iso, except that the date is only 6 bytes, and
+   there is an extra reserved byte after the flags */
+
+struct iso_directory_record {
+	char length			[ISODCL (1, 1)]; /* 711 */
+	char ext_attr_length		[ISODCL (2, 2)]; /* 711 */
+	char extent			[ISODCL (3, 10)]; /* 733 */
+	char size			[ISODCL (11, 18)]; /* 733 */
+	char date			[ISODCL (19, 25)]; /* 7 by 711 */
+	char flags			[ISODCL (26, 26)];
+	char file_unit_size		[ISODCL (27, 27)]; /* 711 */
+	char interleave			[ISODCL (28, 28)]; /* 711 */
+	char volume_sequence_number	[ISODCL (29, 32)]; /* 723 */
+	unsigned char name_len		[ISODCL (33, 33)]; /* 711 */
+	char name			[0];
+} __attribute__((packed));
+
+struct SU_SP{
+  unsigned char magic[2];
+  unsigned char skip;
+} __attribute__((packed));
+
+struct SU_CE{
+  char extent[8];
+  char offset[8];
+  char size[8];
+};
+
+struct SU_ER{
+  unsigned char len_id;
+  unsigned char len_des;
+  unsigned char len_src;
+  unsigned char ext_ver;
+  char data[0];
+} __attribute__((packed));
+
+struct RR_RR{
+  char flags[1];
+} __attribute__((packed));
+
+struct RR_PX{
+  char mode[8];
+  char n_links[8];
+  char uid[8];
+  char gid[8];
+};
+
+struct RR_PN{
+  char dev_high[8];
+  char dev_low[8];
+};
+
+
+struct SL_component{
+  unsigned char flags;
+  unsigned char len;
+  char text[0];
+} __attribute__((packed));
+
+struct RR_SL{
+  unsigned char flags;
+  struct SL_component link;
+} __attribute__((packed));
+
+struct RR_NM{
+  unsigned char flags;
+  char name[0];
+} __attribute__((packed));
+
+struct RR_CL{
+  char location[8];
+};
+
+struct RR_PL{
+  char location[8];
+};
+
+struct stamp{
+  char time[7];
+} __attribute__((packed));
+
+struct RR_TF{
+  char flags;
+  struct stamp times[0];  /* Variable number of these beasts */
+} __attribute__((packed));
+
+/* Linux-specific extension for transparent decompression */
+struct RR_ZF{
+  char algorithm[2];
+  char parms[2];
+  char real_size[8];
+};
+
+struct rock_ridge{
+  char signature[2];
+  unsigned char len;
+  unsigned char version;
+  union{
+    struct SU_SP SP;
+    struct SU_CE CE;
+    struct SU_ER ER;
+    struct RR_RR RR;
+    struct RR_PX PX;
+    struct RR_PN PN;
+    struct RR_SL SL;
+    struct RR_NM NM;
+    struct RR_CL CL;
+    struct RR_PL PL;
+    struct RR_TF TF;
+    struct RR_ZF ZF;
+  } u;
+};
+
+typedef union RR_ptr {
+        struct rock_ridge *rr;
+        char              *ptr;
+        int                i;
+} RR_ptr_t;
+
+#include <arch/byteorder.h>
+
+static inline int isonum_711(char *p)
+{
+	unsigned char x = *(unsigned char *)p;
+	return x;
+}
+static inline int isonum_712(char *p)
+{
+	return *(char *)p;
+}
+static inline int isonum_721(char *p)
+{
+	return le16_to_cpu(*(unsigned short *)p);
+}
+static inline int isonum_722(char *p)
+{
+	return be16_to_cpu(*(unsigned short *)p);
+}
+static inline int isonum_723(char *p)
+{
+	/* Ignore bigendian datum due to broken mastering programs */
+	return le16_to_cpu(*(unsigned short *)p);
+}
+static inline int isonum_731(char *p)
+{
+	return le32_to_cpu(*(unsigned int *)p);
+}
+static inline int isonum_732(char *p)
+{
+	return be32_to_cpu(*(unsigned int *)p);
+}
+static inline int isonum_733(char *p)
+{
+	/* Ignore bigendian datum due to broken mastering programs */
+	return le32_to_cpu(*(unsigned int *)p);
+}
+#endif /* _ISO9660_H */
diff --git a/src/include/fs/vfs.h b/src/include/fs/vfs.h
new file mode 100644
index 0000000000..4040566f65
--- /dev/null
+++ b/src/include/fs/vfs.h
@@ -0,0 +1,29 @@
+#ifndef _VFS_H
+#define _VFS_H
+
+#include <stdint.h>
+
+#define DISK_IDE 1
+#define DISK_MEM 2
+
+int devopen(const char *name, int *reopen);
+int devread(unsigned long sector, unsigned long byte_offset,
+	unsigned long byte_len, void *buf);
+
+int file_open(const char *filename);
+int file_read(void *buf, unsigned long len);
+int file_seek(unsigned long offset);
+unsigned long file_pos(void);
+unsigned long file_size(void);
+
+#define PARTITION_UNKNOWN 0xbad6a7
+
+#ifdef CONFIG_FS_ELTORITO
+int open_eltorito_image(int part, unsigned long *start, unsigned long *length);
+#else
+# define open_eltorito_image(x,y,z) PARTITION_UNKNOWN
+#endif
+
+extern int using_devsize;
+
+#endif /* _VFS_H */