blob: 2213555adbc8fb5fbe2bc7a1c29eab3e01f08f32 [file] [log] [blame]
#ifndef __COMMON_H
#define __COMMON_H
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) Hewlett-Packard (Paul Bame) paul_bame@hp.com
*/
#define PALOMAGIC "PALO"
#define PALOVERSION "2.01"
#ifndef __ASSEMBLY__
#define __KERNEL_STRICT_NAMES /* fixes build on SUSE 10 (kernel 2.6.1[2|3]) */
#if !(defined(__hpux__) || defined(__hpux))
# include <sys/cdefs.h> /* useful macros */
# include <byteswap.h>
#endif
#include <stdarg.h>
/* Swap bytes in 32 bit value. */
#define __palo_bswap_constant_32(x) \
((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
#if defined(__linux__)
# include <asm/byteorder.h>
#elif defined(__hpux__) || defined(__hpux)
/* HP-UX is always big endian */
# define __be64_to_cpu(x) (x)
# define __be32_to_cpu(x) (x)
# define __be16_to_cpu(x) (x)
# define __le32_to_cpu(x) __palo_bswap_constant_32(x)
# define __le16_to_cpu(x) le16toh(x)
# define __cpu_to_be32(x) (x)
#else /* BSD and similiar */
# include <endian.h>
# define __be64_to_cpu(x) be64toh(x)
# define __be32_to_cpu(x) be32toh(x)
# define __be16_to_cpu(x) be16toh(x)
# define __le32_to_cpu(x) le32toh(x)
# define __le16_to_cpu(x) le16toh(x)
# define __cpu_to_be32(x) htobe32(x)
#endif
#include "part.h"
#if defined(IPL_LOADER)
void *pa_memcpy(void *dest, const void *src, unsigned n);
#else
# include <string.h>
# define pa_memcpy memcpy
#endif
/* Newer versions of linux-kernel-headers provide a sanitized swab.h
* which uses GLIBC provided functionality, and dump the kernel provided
* ones. Include <byteswap.h> above, and provide compatibility #define's
* to work around this.
*/
#ifndef __swab64
#define __swab64(x) bswap_64(x)
#endif /* __swab64 */
#ifndef __swab32
#define __swab32(x) bswap_32(x)
#endif /* __swab32 */
#ifndef __swab16
#define __swab16(x) bswap_16(x)
#endif /* __swab16 */
/* size of I/O block used in HP firmware */
#define FW_BLOCKSIZE 2048
#define GB (1024 * 1024 * 1024)
/* assume kernel will always be loaded into the "lower" physical memory */
#define PHYS(virtual) ((virtual) & 0x0fffffff)
/* This struct is placed at the start of the boot loader executable. The
* "magic" number is the assembly-language branch needed to skip over the
* rest of the structure. This structure is manipulated by the program
* which creates and updates boot media (palo). It must stay 256 bytes
* in length!
*
* kern_sz = 0 or rd_sz = 0 means no kern or ramdisk respectively.
*/
#define PALOHDRVERSION 5
#define PFLAG_INSTALL 0x1
#define PFLAG_EXT2 0x2
#define CMDLINELEN 1024 /* max length of command line */
struct firstblock
{
unsigned char lifmagic0; /* 0x80 */
unsigned char lifmagic1; /* 0x00 */
char palomagic[5]; /* PALO */
unsigned char version;
int kern32_offset; /* seek() here to begin loading kernel */
int kern32_sz; /* # bytes to load */
int rd_offset; /* seek() here to begin loading ramdisk */
int rd_sz; /* # bytes in ramdisk */
char cmdline_old[128]; /* OLD: Up to 127 bytes of text plus a \0 */
unsigned char pad1[0xf0 - 8 - 9 * sizeof (int) - 128];
int kern32_native_sz; /* 32bit kernel: uncompressed file size */
int kern64_native_sz; /* 64bit kernel: uncompressed file size */
unsigned int flags;
int kern64_offset;
int kern64_sz;
int ipl_addr; /* offset 0xf0 */
int ipl_size;
int ipl_entry;
/* offset 0x1be */
unsigned char pad2[0x1be - (0xf0 + 3 * sizeof (int))];
struct partition part[4];
/* offset 0x1fe */
unsigned char dosmagic[2]; /* 0x55, 0xaa */
unsigned char pad4[1024 - 0x200];
char cmdline[CMDLINELEN];/* max 1023 bytes of text plus a \0 */
};
/* we use this so that we can do without the ctype library */
#define is_digit(c) ((c) >= '0' && (c) <= '9')
struct diskpartition
{
/* in honor of the MBR scheme, these are in 512-byte sectors */
unsigned start;
/* length == 0 means nothing's here */
unsigned length;
unsigned char id;
};
#define MAXPARTS 16
int seekread(int fd, char *buf, unsigned nbytes, unsigned devaddr);
#define STRUCTWRITE(f, data, where) seekwrite((f), (char *)&data, sizeof data, (where))
#define STRUCTREAD(f, data, where) seekread((f), (char *)&data, sizeof data, (where))
#define GZIP_STRUCTREAD(loadable, f, data, where) \
(loadable->uncompressed_data) ? \
( pa_memcpy(&data, &loadable->uncompressed_data[where], sizeof data), (sizeof data) ) \
: \
seekread((f), (char *)&data, sizeof data, (where))
/* diskpart.c */
extern int is_extended(int id);
extern int load_partitions(int bootdev, struct diskpartition *mptab, int maxparts);
extern void print_ptab(struct diskpartition *mptab, int maxparts);
extern void print_ptab_pretty(struct diskpartition *mptab, int maxparts);
#endif /* __ASSEMBLY__ */
#endif /* __COMMON_H */