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/*
* doff.h
*
* DSP-BIOS Bridge driver support functions for TI OMAP processors.
*
* Structures & definitions used for dynamically loaded modules file format.
* This format is a reformatted version of COFF. It optimizes the layout for
* the dynamic loader.
*
* .dof files, when viewed as a sequence of 32-bit integers, look the same
* on big-endian and little-endian machines.
*
* Copyright (C) 2005-2006 Texas Instruments, Inc.
*
* This package is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef _DOFF_H
#define _DOFF_H
#define BYTE_RESHUFFLE_VALUE 0x00010203
/* DOFF file header containing fields categorizing the remainder of the file */
struct doff_filehdr_t {
/* string table size, including filename, in bytes */
u32 df_strtab_size;
/* entry point if one exists */
u32 df_entrypt;
/* identifies byte ordering of file;
* always set to BYTE_RESHUFFLE_VALUE */
u32 df_byte_reshuffle;
/* Size of the string table up to and including the last section name */
/* Size includes the name of the COFF file also */
u32 df_scn_name_size;
#ifndef _BIG_ENDIAN
/* number of symbols */
u16 df_no_syms;
/* length in bytes of the longest string, including terminating NULL */
/* excludes the name of the file */
u16 df_max_str_len;
/* total number of sections including no-load ones */
u16 df_no_scns;
/* number of sections containing target code allocated or downloaded */
u16 df_target_scns;
/* unique id for dll file format & version */
u16 df_doff_version;
/* identifies ISA */
u16 df_target_id;
/* useful file flags */
u16 df_flags;
/* section reference for entry point, N_UNDEF for none, */
/* N_ABS for absolute address */
s16 df_entry_secn;
#else
/* length of the longest string, including terminating NULL */
u16 df_max_str_len;
/* number of symbols */
u16 df_no_syms;
/* number of sections containing target code allocated or downloaded */
u16 df_target_scns;
/* total number of sections including no-load ones */
u16 df_no_scns;
/* identifies ISA */
u16 df_target_id;
/* unique id for dll file format & version */
u16 df_doff_version;
/* section reference for entry point, N_UNDEF for none, */
/* N_ABS for absolute address */
s16 df_entry_secn;
/* useful file flags */
u16 df_flags;
#endif
/* checksum for file header record */
u32 df_checksum;
};
/* flags in the df_flags field */
#define DF_LITTLE 0x100
#define DF_BIG 0x200
#define DF_BYTE_ORDER (DF_LITTLE | DF_BIG)
/* Supported processors */
#define TMS470_ID 0x97
#define LEAD_ID 0x98
#define TMS32060_ID 0x99
#define LEAD3_ID 0x9c
/* Primary processor for loading */
#if TMS32060
#define TARGET_ID TMS32060_ID
#endif
/* Verification record containing values used to test integrity of the bits */
struct doff_verify_rec_t {
/* time and date stamp */
u32 dv_timdat;
/* checksum for all section records */
u32 dv_scn_rec_checksum;
/* checksum for string table */
u32 dv_str_tab_checksum;
/* checksum for symbol table */
u32 dv_sym_tab_checksum;
/* checksum for verification record */
u32 dv_verify_rec_checksum;
};
/* String table is an array of null-terminated strings. The first entry is
* the filename, which is added by DLLcreate. No new structure definitions
* are required.
*/
/* Section Records including information on the corresponding image packets */
/*
* !!WARNING!!
*
* This structure is expected to match in form ldr_section_info in
* dynamic_loader.h
*/
struct doff_scnhdr_t {
s32 ds_offset; /* offset into string table of name */
s32 ds_paddr; /* RUN address, in target AU */
s32 ds_vaddr; /* LOAD address, in target AU */
s32 ds_size; /* section size, in target AU */
#ifndef _BIG_ENDIAN
u16 ds_page; /* memory page id */
u16 ds_flags; /* section flags */
#else
u16 ds_flags; /* section flags */
u16 ds_page; /* memory page id */
#endif
u32 ds_first_pkt_offset;
/* Absolute byte offset into the file */
/* where the first image record resides */
s32 ds_nipacks; /* number of image packets */
};
/* Symbol table entry */
struct doff_syment_t {
s32 dn_offset; /* offset into string table of name */
s32 dn_value; /* value of symbol */
#ifndef _BIG_ENDIAN
s16 dn_scnum; /* section number */
s16 dn_sclass; /* storage class */
#else
s16 dn_sclass; /* storage class */
s16 dn_scnum; /* section number, 1-based */
#endif
};
/* special values for dn_scnum */
#define DN_UNDEF 0 /* undefined symbol */
#define DN_ABS (-1) /* value of symbol is absolute */
/* special values for dn_sclass */
#define DN_EXT 2
#define DN_STATLAB 20
#define DN_EXTLAB 21
/* Default value of image bits in packet */
/* Configurable by user on the command line */
#define IMAGE_PACKET_SIZE 1024
/* An image packet contains a chunk of data from a section along with */
/* information necessary for its processing. */
struct image_packet_t {
s32 num_relocs; /* number of relocations for */
/* this packet */
s32 packet_size; /* number of bytes in array */
/* "bits" occupied by */
/* valid data. Could be */
/* < IMAGE_PACKET_SIZE to */
/* prevent splitting a */
/* relocation across packets. */
/* Last packet of a section */
/* will most likely contain */
/* < IMAGE_PACKET_SIZE bytes */
/* of valid data */
s32 img_chksum; /* Checksum for image packet */
/* and the corresponding */
/* relocation records */
u8 *img_data; /* Actual data in section */
};
/* The relocation structure definition matches the COFF version. Offsets */
/* however are relative to the image packet base not the section base. */
struct reloc_record_t {
s32 vaddr;
/* expressed in target AUs */
union {
struct {
#ifndef _BIG_ENDIAN
u8 _offset; /* bit offset of rel fld */
u8 _fieldsz; /* size of rel fld */
u8 _wordsz; /* # bytes containing rel fld */
u8 _dum1;
u16 _dum2;
u16 _type;
#else
unsigned _dum1:8;
unsigned _wordsz:8; /* # bytes containing rel fld */
unsigned _fieldsz:8; /* size of rel fld */
unsigned _offset:8; /* bit offset of rel fld */
u16 _type;
u16 _dum2;
#endif
} _r_field;
struct {
u32 _spc; /* image packet relative PC */
#ifndef _BIG_ENDIAN
u16 _dum;
u16 _type; /* relocation type */
#else
u16 _type; /* relocation type */
u16 _dum;
#endif
} _r_spc;
struct {
u32 _uval; /* constant value */
#ifndef _BIG_ENDIAN
u16 _dum;
u16 _type; /* relocation type */
#else
u16 _type; /* relocation type */
u16 _dum;
#endif
} _r_uval;
struct {
s32 _symndx; /* 32-bit sym tbl index */
#ifndef _BIG_ENDIAN
u16 _disp; /* extra addr encode data */
u16 _type; /* relocation type */
#else
u16 _type; /* relocation type */
u16 _disp; /* extra addr encode data */
#endif
} _r_sym;
} _u_reloc;
};
/* abbreviations for convenience */
#ifndef TYPE
#define TYPE _u_reloc._r_sym._type
#define UVAL _u_reloc._r_uval._uval
#define SYMNDX _u_reloc._r_sym._symndx
#define OFFSET _u_reloc._r_field._offset
#define FIELDSZ _u_reloc._r_field._fieldsz
#define WORDSZ _u_reloc._r_field._wordsz
#define R_DISP _u_reloc._r_sym._disp
#endif
/**************************************************************************** */
/* */
/* Important DOFF macros used for file processing */
/* */
/**************************************************************************** */
/* DOFF Versions */
#define DOFF0 0
/* Return the address/size >= to addr that is at a 32-bit boundary */
/* This assumes that a byte is 8 bits */
#define DOFF_ALIGN(addr) (((addr) + 3) & ~3UL)
/**************************************************************************** */
/* */
/* The DOFF section header flags field is laid out as follows: */
/* */
/* Bits 0-3 : Section Type */
/* Bit 4 : Set when section requires target memory to be allocated by DL */
/* Bit 5 : Set when section requires downloading */
/* Bits 8-11: Alignment, same as COFF */
/* */
/**************************************************************************** */
/* Enum for DOFF section types (bits 0-3 of flag): See dynamic_loader.h */
#define DS_SECTION_TYPE_MASK 0xF
/* DS_ALLOCATE indicates whether a section needs space on the target */
#define DS_ALLOCATE_MASK 0x10
/* DS_DOWNLOAD indicates that the loader needs to copy bits */
#define DS_DOWNLOAD_MASK 0x20
/* Section alignment requirement in AUs */
#define DS_ALIGNMENT_SHIFT 8
static inline bool dload_check_type(struct doff_scnhdr_t *sptr, u32 flag)
{
return (sptr->ds_flags & DS_SECTION_TYPE_MASK) == flag;
}
static inline bool ds_needs_allocation(struct doff_scnhdr_t *sptr)
{
return sptr->ds_flags & DS_ALLOCATE_MASK;
}
static inline bool ds_needs_download(struct doff_scnhdr_t *sptr)
{
return sptr->ds_flags & DS_DOWNLOAD_MASK;
}
static inline int ds_alignment(u16 ds_flags)
{
return 1 << ((ds_flags >> DS_ALIGNMENT_SHIFT) & DS_SECTION_TYPE_MASK);
}
#endif /* _DOFF_H */
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