9be0790d19
This adds support for bhnd_nvram_val_convert_init() and bhnd_nvram_val_convert_new(), which may be used to perform value format-aware encoding of an NVRAM value to a new target format/type. This will be used to simplify converting to/from serialized format-specific NVRAM value representations to common external representations. Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D8757
413 lines
14 KiB
C
413 lines
14 KiB
C
/*-
|
|
* Copyright (c) 2015-2016 Landon Fuller <landonf@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
|
|
* redistribution must be conditioned upon including a substantially
|
|
* similar Disclaimer requirement for further binary redistribution.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
|
|
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
|
|
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
* THE POSSIBILITY OF SUCH DAMAGES.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _BHND_NVRAM_BHND_NVRAM_PRIVATE_H_
|
|
#define _BHND_NVRAM_BHND_NVRAM_PRIVATE_H_
|
|
|
|
/*
|
|
* Private BHND NVRAM definitions.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
|
|
#ifdef _KERNEL
|
|
#include <sys/malloc.h>
|
|
|
|
#include <machine/stdarg.h>
|
|
#else
|
|
#include <stdarg.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#endif
|
|
|
|
#include "bhnd_nvram.h"
|
|
#include "bhnd_nvram_value.h"
|
|
|
|
/*
|
|
* bhnd_nvram_crc8() lookup table.
|
|
*/
|
|
extern const uint8_t bhnd_nvram_crc8_tab[];
|
|
|
|
/* Forward declarations */
|
|
struct bhnd_nvram_vardefn;
|
|
|
|
#ifdef _KERNEL
|
|
|
|
MALLOC_DECLARE(M_BHND_NVRAM);
|
|
|
|
#define bhnd_nv_isupper(c) isupper(c)
|
|
#define bhnd_nv_islower(c) islower(c)
|
|
#define bhnd_nv_isalpha(c) isalpha(c)
|
|
#define bhnd_nv_isprint(c) isprint(c)
|
|
#define bhnd_nv_isspace(c) isspace(c)
|
|
#define bhnd_nv_isdigit(c) isdigit(c)
|
|
#define bhnd_nv_isxdigit(c) isxdigit(c)
|
|
#define bhnd_nv_toupper(c) toupper(c)
|
|
|
|
#define bhnd_nv_malloc(size) malloc((size), M_BHND_NVRAM, M_WAITOK)
|
|
#define bhnd_nv_calloc(n, size) malloc((n) * (size), M_BHND_NVRAM, \
|
|
M_WAITOK | M_ZERO)
|
|
#define bhnd_nv_reallocf(buf, size) reallocf((buf), (size), M_BHND_NVRAM, \
|
|
M_WAITOK)
|
|
#define bhnd_nv_free(buf) free((buf), M_BHND_NVRAM)
|
|
#define bhnd_nv_strdup(str) strdup(str, M_BHND_NVRAM)
|
|
#define bhnd_nv_strndup(str, len) strndup(str, len, M_BHND_NVRAM)
|
|
|
|
#ifdef INVARIANTS
|
|
#define BHND_NV_INVARIANTS
|
|
#endif
|
|
|
|
#define BHND_NV_ASSERT(expr, ...) KASSERT(expr, __VA_ARGS__)
|
|
|
|
#define BHND_NV_VERBOSE (bootverbose)
|
|
#define BHND_NV_PANIC(...) panic(__VA_ARGS__)
|
|
#define BHND_NV_LOG(fmt, ...) \
|
|
printf("%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
|
|
|
|
#define bhnd_nv_ummax(a, b) ummax((a), (b))
|
|
#define bhnd_nv_ummin(a, b) ummin((a), (b))
|
|
|
|
#else /* !_KERNEL */
|
|
|
|
#include <assert.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
/* ASCII-specific ctype variants that work consistently regardless
|
|
* of current locale */
|
|
#define bhnd_nv_isupper(c) ((c) >= 'A' && (c) <= 'Z')
|
|
#define bhnd_nv_islower(c) ((c) >= 'a' && (c) <= 'z')
|
|
#define bhnd_nv_isalpha(c) (bhnd_nv_isupper(c) || bhnd_nv_islower(c))
|
|
#define bhnd_nv_isprint(c) ((c) >= ' ' && (c) <= '~')
|
|
#define bhnd_nv_isspace(c) ((c) == ' ' || ((c) >= '\t' && (c) <= '\r'))
|
|
#define bhnd_nv_isdigit(c) isdigit(c)
|
|
#define bhnd_nv_isxdigit(c) isxdigit(c)
|
|
#define bhnd_nv_toupper(c) ((c) - \
|
|
(('a' - 'A') * ((c) >= 'a' && (c) <= 'z')))
|
|
|
|
#define bhnd_nv_malloc(size) malloc((size))
|
|
#define bhnd_nv_calloc(n, size) calloc((n), (size))
|
|
#define bhnd_nv_reallocf(buf, size) reallocf((buf), (size))
|
|
#define bhnd_nv_free(buf) free((buf))
|
|
#define bhnd_nv_strdup(str) strdup(str)
|
|
#define bhnd_nv_strndup(str, len) strndup(str, len)
|
|
|
|
#ifndef NDEBUG
|
|
#define BHND_NV_INVARIANTS
|
|
#endif
|
|
|
|
#define BHND_NV_ASSERT(expr, ...) assert(expr)
|
|
|
|
#define BHND_NV_VERBOSE (0)
|
|
#define BHND_NV_PANIC(fmt, ...) do { \
|
|
fprintf(stderr, "panic: " fmt "\n", ##__VA_ARGS__); \
|
|
abort(); \
|
|
} while(0)
|
|
#define BHND_NV_LOG(fmt, ...) \
|
|
fprintf(stderr, "%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
|
|
|
|
static inline uintmax_t
|
|
bhnd_nv_ummax(uintmax_t a, uintmax_t b)
|
|
{
|
|
return (a > b ? a : b);
|
|
}
|
|
|
|
static inline uintmax_t
|
|
bhnd_nv_ummin(uintmax_t a, uintmax_t b)
|
|
{
|
|
|
|
return (a < b ? a : b);
|
|
}
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#ifdef BHND_NV_VERBOSE
|
|
#define BHND_NV_DEBUG(...) BHND_NV_LOG(__VA_ARGS__)
|
|
#else /* !BHND_NV_VERBOSE */
|
|
#define BHND_NV_DEBUG(...)
|
|
#endif /* BHND_NV_VERBOSE */
|
|
|
|
/* Limit a size_t value to a suitable range for use as a printf string field
|
|
* width */
|
|
#define BHND_NV_PRINT_WIDTH(_len) \
|
|
((_len) > (INT_MAX) ? (INT_MAX) : (int)(_len))
|
|
|
|
int bhnd_nvram_value_coerce(const void *inp,
|
|
size_t ilen, bhnd_nvram_type itype,
|
|
void *outp, size_t *olen,
|
|
bhnd_nvram_type otype);
|
|
|
|
int bhnd_nvram_value_check_aligned(const void *inp,
|
|
size_t ilen, bhnd_nvram_type itype);
|
|
|
|
int bhnd_nvram_value_nelem(const void *inp,
|
|
size_t ilen, bhnd_nvram_type itype,
|
|
size_t *nelem);
|
|
|
|
size_t bhnd_nvram_value_size(const void *inp,
|
|
size_t ilen, bhnd_nvram_type itype,
|
|
size_t nelem);
|
|
|
|
int bhnd_nvram_value_printf(const char *fmt,
|
|
const void *inp, size_t ilen,
|
|
bhnd_nvram_type itype, char *outp,
|
|
size_t *olen, ...);
|
|
int bhnd_nvram_value_vprintf(const char *fmt,
|
|
const void *inp, size_t ilen,
|
|
bhnd_nvram_type itype, char *outp,
|
|
size_t *olen, va_list ap);
|
|
|
|
const void *bhnd_nvram_value_array_next(const void *inp,
|
|
size_t ilen, bhnd_nvram_type itype,
|
|
const void *prev, size_t *olen);
|
|
|
|
const struct bhnd_nvram_vardefn *bhnd_nvram_find_vardefn(const char *varname);
|
|
const struct bhnd_nvram_vardefn *bhnd_nvram_get_vardefn(size_t id);
|
|
size_t bhnd_nvram_get_vardefn_id(
|
|
const struct bhnd_nvram_vardefn *defn);
|
|
|
|
int bhnd_nvram_parse_int(const char *s,
|
|
size_t maxlen, u_int base, size_t *nbytes,
|
|
void *outp, size_t *olen,
|
|
bhnd_nvram_type otype);
|
|
|
|
int bhnd_nvram_parse_env(const char *env,
|
|
size_t env_len, char delim,
|
|
const char **name, size_t *name_len,
|
|
const char **value, size_t *value_len);
|
|
|
|
size_t bhnd_nvram_parse_field(const char **inp,
|
|
size_t ilen, char delim);
|
|
size_t bhnd_nvram_trim_field(const char **inp,
|
|
size_t ilen, char delim);
|
|
|
|
bool bhnd_nvram_validate_name(const char *name,
|
|
size_t name_len);
|
|
|
|
/**
|
|
* Calculate CRC-8 over @p buf using the Broadcom SPROM/NVRAM CRC-8
|
|
* polynomial.
|
|
*
|
|
* @param buf input buffer
|
|
* @param size buffer size
|
|
* @param crc last computed crc, or BHND_NVRAM_CRC8_INITIAL
|
|
*/
|
|
static inline uint8_t
|
|
bhnd_nvram_crc8(const void *buf, size_t size, uint8_t crc)
|
|
{
|
|
const uint8_t *p = (const uint8_t *)buf;
|
|
while (size--)
|
|
crc = bhnd_nvram_crc8_tab[(crc ^ *p++)];
|
|
|
|
return (crc);
|
|
}
|
|
|
|
#define BHND_NVRAM_CRC8_INITIAL 0xFF /**< Initial bhnd_nvram_crc8 value */
|
|
#define BHND_NVRAM_CRC8_VALID 0x9F /**< Valid CRC-8 checksum */
|
|
|
|
/** NVRAM variable flags */
|
|
enum {
|
|
BHND_NVRAM_VF_MFGINT = 1<<0, /**< mfg-internal variable; should not
|
|
be externally visible */
|
|
BHND_NVRAM_VF_IGNALL1 = 1<<1 /**< hide variable if its value has all
|
|
bits set. */
|
|
};
|
|
|
|
/**
|
|
* SPROM layout flags
|
|
*/
|
|
enum {
|
|
/**
|
|
* SPROM layout does not have magic identification value.
|
|
*
|
|
* This applies to SPROM revisions 1-3, where the actual
|
|
* layout must be determined by looking for a matching sromrev
|
|
* at the expected offset, and then verifying the CRC to ensure
|
|
* that the match was not a false positive.
|
|
*/
|
|
SPROM_LAYOUT_MAGIC_NONE = (1<<0),
|
|
};
|
|
|
|
/** NVRAM variable definition */
|
|
struct bhnd_nvram_vardefn {
|
|
const char *name; /**< variable name */
|
|
const char *desc; /**< human readable description,
|
|
or NULL */
|
|
const char *help; /**< human readable help text,
|
|
or NULL */
|
|
bhnd_nvram_type type; /**< variable type */
|
|
uint8_t nelem; /**< element count, or 1 if not
|
|
an array-typed variable */
|
|
const bhnd_nvram_val_fmt *fmt; /**< value format, or NULL */
|
|
uint32_t flags; /**< flags (BHND_NVRAM_VF_*) */
|
|
};
|
|
|
|
/*
|
|
* NVRAM variable definitions generated from nvram_map.
|
|
*/
|
|
extern const struct bhnd_nvram_vardefn bhnd_nvram_vardefns[];
|
|
extern const size_t bhnd_nvram_num_vardefns;
|
|
|
|
/**
|
|
* SPROM layout descriptor.
|
|
*/
|
|
struct bhnd_sprom_layout {
|
|
size_t size; /**< SPROM image size, in bytes */
|
|
uint8_t rev; /**< SPROM revision */
|
|
uint8_t flags; /**< layout flags (SPROM_LAYOUT_*) */
|
|
size_t srev_offset; /**< offset to SROM revision */
|
|
size_t magic_offset; /**< offset to magic value */
|
|
uint16_t magic_value; /**< expected magic value */
|
|
const uint8_t *bindings; /**< SPROM binding opcode table */
|
|
size_t bindings_size; /**< SPROM binding opcode table size */
|
|
uint16_t num_vars; /**< total number of variables defined
|
|
for this layout by the binding
|
|
table */
|
|
};
|
|
|
|
/*
|
|
* SPROM layout descriptions generated from nvram_map.
|
|
*/
|
|
extern const struct bhnd_sprom_layout bhnd_sprom_layouts[];
|
|
extern const size_t bhnd_sprom_num_layouts;
|
|
|
|
/*
|
|
* SPROM binding opcodes.
|
|
*
|
|
* Most opcodes are provided with two variants:
|
|
*
|
|
* - Standard: The opcode's data directly follows the opcode. The data type
|
|
* (SPROM_OPCODE_DATA_*) is encoded in the opcode immediate (IMM).
|
|
* - Immediate: The opcode's data is encoded directly in the opcode immediate
|
|
* (IMM).
|
|
*/
|
|
#define SPROM_OPC_MASK 0xF0 /**< operation mask */
|
|
#define SPROM_IMM_MASK 0x0F /**< immediate value mask */
|
|
#define SPROM_IMM_MAX SPROM_IMM_MASK
|
|
#define SPROM_OP_DATA_U8 0x00 /**< data is u8 */
|
|
#define SPROM_OP_DATA_U8_SCALED 0x01 /**< data is u8; multiply by
|
|
type width */
|
|
#define SPROM_OP_DATA_U16 0x02 /**< data is u16-le */
|
|
#define SPROM_OP_DATA_U32 0x03 /**< data is u32-le */
|
|
#define SPROM_OP_DATA_I8 0x04 /**< data is i8 */
|
|
#define SPROM_OPCODE_EXT 0x00 /**< extended opcodes defined
|
|
in IMM */
|
|
#define SPROM_OPCODE_EOF 0x00 /**< marks end of opcode
|
|
stream */
|
|
#define SPROM_OPCODE_NELEM 0x01 /**< variable array element
|
|
count follows as U8 */
|
|
#define SPROM_OPCODE_VAR_END 0x02 /**< marks end of variable
|
|
definition */
|
|
#define SPROM_OPCODE_TYPE 0x03 /**< input type follows as U8
|
|
(see BHND_NVRAM_TYPE_*) */
|
|
#define SPROM_OPCODE_VAR_IMM 0x10 /**< variable ID (imm) */
|
|
#define SPROM_OPCODE_VAR_REL_IMM 0x20 /**< relative variable ID
|
|
(last ID + imm) */
|
|
#define SPROM_OPCODE_VAR 0x30 /**< variable ID */
|
|
#define SPROM_OPCODE_REV_IMM 0x40 /**< revision range (imm) */
|
|
#define SPROM_OPCODE_REV_RANGE 0x50 /**< revision range (8-bit range)*/
|
|
#define SPROM_OP_REV_RANGE_MAX 0x0F /**< maximum representable SROM
|
|
revision */
|
|
#define SPROM_OP_REV_START_MASK 0xF0
|
|
#define SPROM_OP_REV_START_SHIFT 4
|
|
#define SPROM_OP_REV_END_MASK 0x0F
|
|
#define SPROM_OP_REV_END_SHIFT 0
|
|
#define SPROM_OPCODE_MASK_IMM 0x60 /**< value mask (imm) */
|
|
#define SPROM_OPCODE_MASK 0x70 /**< value mask */
|
|
#define SPROM_OPCODE_SHIFT_IMM 0x80 /**< value shift (unsigned
|
|
imm, multipled by 2) */
|
|
#define SPROM_OPCODE_SHIFT 0x90 /**< value shift */
|
|
#define SPROM_OPCODE_OFFSET_REL_IMM 0xA0 /**< relative input offset
|
|
(last offset +
|
|
(imm * type width)) */
|
|
#define SPROM_OPCODE_OFFSET 0xB0 /**< input offset */
|
|
#define SPROM_OPCODE_TYPE_IMM 0xC0 /**< input type (imm,
|
|
see BHND_NVRAM_TYPE_*) */
|
|
#define SPROM_OPCODE_DO_BIND 0xD0 /**< bind current value,
|
|
advance input/output
|
|
offsets as per IMM */
|
|
#define SPROM_OP_BIND_SKIP_IN_MASK 0x03 /**< the number of input
|
|
elements to advance after
|
|
the bind */
|
|
#define SPROM_OP_BIND_SKIP_IN_SHIFT 0
|
|
#define SPROM_OP_BIND_SKIP_IN_SIGN (1<<2) /**< SKIP_IN sign bit */
|
|
#define SPROM_OP_BIND_SKIP_OUT_MASK 0x08 /**< the number of output
|
|
elements to advance after
|
|
the bind */
|
|
#define SPROM_OP_BIND_SKIP_OUT_SHIFT 3
|
|
#define SPROM_OPCODE_DO_BINDN_IMM 0xE0 /**< bind IMM times, advancing
|
|
input/output offsets by one
|
|
element each time */
|
|
#define SPROM_OPCODE_DO_BINDN 0xF0 /**< bind N times, advancing
|
|
input/output offsets as per
|
|
SPROM_OP_BIND_SKIP_IN/SPROM_OP_BIND_SKIP_OUT
|
|
IMM values. The U8 element
|
|
count follows. */
|
|
|
|
/** Evaluates to true if opcode is an extended opcode */
|
|
#define SPROM_OPCODE_IS_EXT(_opcode) \
|
|
(((_opcode) & SPROM_OPC_MASK) == SPROM_OPCODE_EXT)
|
|
|
|
/** Return the opcode constant for a simple or extended opcode */
|
|
#define SPROM_OPCODE_OP(_opcode) \
|
|
(SPROM_OPCODE_IS_EXT(_opcode) ? (_opcode) : ((_opcode) & SPROM_OPC_MASK))
|
|
|
|
/** Return the opcode immediate for a simple opcode, or zero if this is
|
|
* an extended opcode */
|
|
#define SPROM_OPCODE_IMM(_opcode) \
|
|
(SPROM_OPCODE_IS_EXT(_opcode) ? 0 : ((_opcode) & SPROM_IMM_MASK))
|
|
|
|
/** Evaluates to true if the given opcode produces an implicit
|
|
* SPROM_OPCODE_VAR_END instruction for any open variable */
|
|
#define SPROM_OP_IS_IMPLICIT_VAR_END(_opcode) \
|
|
(((_opcode) == SPROM_OPCODE_VAR_IMM) || \
|
|
((_opcode) == SPROM_OPCODE_VAR_REL_IMM) || \
|
|
((_opcode) == SPROM_OPCODE_VAR) || \
|
|
((_opcode) == SPROM_OPCODE_REV_IMM) || \
|
|
((_opcode) == SPROM_OPCODE_REV_RANGE))
|
|
|
|
/** Evaluates to true if the given opcode is either an explicit
|
|
* SPROM_OPCODE_VAR_END instruction, or is an opcode that produces an
|
|
* implicit terminatation of any open variable */
|
|
#define SPROM_OP_IS_VAR_END(_opcode) \
|
|
(((_opcode) == SPROM_OPCODE_VAR_END) || \
|
|
SPROM_OP_IS_IMPLICIT_VAR_END(_opcode))
|
|
|
|
/** maximum representable immediate value */
|
|
#define SPROM_OP_IMM_MAX SPROM_IMM_MASK
|
|
|
|
/** maximum representable SROM revision */
|
|
#define SPROM_OP_REV_MAX MAX(SPROM_OP_REV_RANGE_MAX, SPROM_IMM_MAX)
|
|
|
|
#endif /* _BHND_NVRAM_BHND_NVRAM_PRIVATE_H_ */
|