471 lines
13 KiB
C
471 lines
13 KiB
C
/*
|
|
* This file is part of the libpayload project.
|
|
*
|
|
* Copyright (C) 2008 Advanced Micro Devices, Inc.
|
|
*
|
|
* 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.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* @mainpage
|
|
*
|
|
* @section intro Introduction
|
|
* libpayload is a small BSD-licensed static library (a lightweight
|
|
* implementation of common and useful functions) intended to be used
|
|
* as a basis for coreboot payloads.
|
|
*
|
|
* @section example Example
|
|
* Here is an example of a very simple payload:
|
|
* @include sample/hello.c
|
|
*/
|
|
|
|
#ifndef _LIBPAYLOAD_H
|
|
#define _LIBPAYLOAD_H
|
|
|
|
#include <stddef.h>
|
|
#include <arch/types.h>
|
|
#include <arch/io.h>
|
|
#include <arch/virtual.h>
|
|
#include <sysinfo.h>
|
|
#include <stdarg.h>
|
|
#include <lar.h>
|
|
#include <pci.h>
|
|
|
|
#define MIN(a,b) ((a) < (b) ? (a) : (b))
|
|
#define MAX(a,b) ((a) > (b) ? (a) : (b))
|
|
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
|
|
|
|
#define LITTLE_ENDIAN 1234
|
|
#define BIG_ENDIAN 4321
|
|
|
|
#define EXIT_SUCCESS 0
|
|
#define EXIT_FAILURE 1
|
|
|
|
#define RAND_MAX 0x7fffffff
|
|
|
|
#define MAX_ARGC_COUNT 10
|
|
|
|
/*
|
|
* Payload information parameters - these are used to pass information
|
|
* to the entity loading the payload.
|
|
* Usage: PAYLOAD_INFO(key, value)
|
|
* Example: PAYLOAD_INFO(name, "CoreInfo!")
|
|
*/
|
|
#define _pstruct(key) __pinfo_ ##key
|
|
#define PAYLOAD_INFO(key, value) \
|
|
static const char _pstruct(key)[] \
|
|
__attribute__((__used__)) \
|
|
__attribute__((section(".note.pinfo"),unused)) = #key "=" value
|
|
|
|
/**
|
|
* @defgroup nvram NVRAM and RTC functions
|
|
* @{
|
|
*/
|
|
|
|
#define NVRAM_RTC_SECONDS 0 /**< RTC Seconds offset in CMOS */
|
|
#define NVRAM_RTC_MINUTES 2 /**< RTC Minutes offset in CMOS */
|
|
#define NVRAM_RTC_HOURS 4 /**< RTC Hours offset in CMOS */
|
|
#define NVRAM_RTC_DAY 7 /**< RTC Days offset in CMOS */
|
|
#define NVRAM_RTC_MONTH 8 /**< RTC Month offset in CMOS */
|
|
#define NVRAM_RTC_YEAR 9 /**< RTC Year offset in CMOS */
|
|
#define NVRAM_RTC_FREQ_SELECT 10 /**< RTC Update Status Register */
|
|
#define NVRAM_RTC_UIP 0x80
|
|
|
|
/** Broken down time structure */
|
|
struct tm {
|
|
int tm_sec; /**< Number of seconds after the minute */
|
|
int tm_min; /**< Number of minutes after the hour */
|
|
int tm_hour; /**< Number of hours past midnight */
|
|
int tm_mday; /**< The day of the month */
|
|
int tm_mon; /**< The month of the year */
|
|
int tm_year; /**< The number of years since 1900 */
|
|
int tm_wday; /**< The day of the week */
|
|
int tm_yday; /**< The number of days since January 1 */
|
|
int tm_isdst; /**< A flag indicating daylight savings time */
|
|
};
|
|
|
|
u8 nvram_read(u8 addr);
|
|
void nvram_write(u8 val, u8 addr);
|
|
int nvram_updating(void);
|
|
void rtc_read_clock(struct tm *tm);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup usb USB functions
|
|
* @{
|
|
*/
|
|
int usb_initialize(void);
|
|
int usbhid_havechar(void);
|
|
int usbhid_getchar(void);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup input Device functions
|
|
* @{ @}
|
|
*/
|
|
|
|
extern void (*reset_handler)(void);
|
|
int add_reset_handler(void (*new_handler)(void));
|
|
|
|
/**
|
|
* @defgroup keyboard Keyboard functions
|
|
* @ingroup input
|
|
* @{
|
|
*/
|
|
void keyboard_init(void);
|
|
int keyboard_havechar(void);
|
|
unsigned char keyboard_get_scancode(void);
|
|
int keyboard_getchar(void);
|
|
int keyboard_set_layout(char *country);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup serial Serial functions
|
|
* @ingroup input
|
|
* @{
|
|
*/
|
|
void serial_init(void);
|
|
void serial_hardware_init(int port, int speed, int word_bits, int parity, int stop_bits);
|
|
void serial_putchar(unsigned int c);
|
|
int serial_havechar(void);
|
|
int serial_getchar(void);
|
|
void serial_clear(void);
|
|
void serial_start_bold(void);
|
|
void serial_end_bold(void);
|
|
void serial_start_reverse(void);
|
|
void serial_end_reverse(void);
|
|
void serial_start_altcharset(void);
|
|
void serial_end_altcharset(void);
|
|
void serial_set_color(short fg, short bg);
|
|
void serial_cursor_enable(int state);
|
|
void serial_set_cursor(int y, int x);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup speaker Speaker functions
|
|
* @ingroup input
|
|
* @{
|
|
*/
|
|
void speaker_enable(u16 freq);
|
|
void speaker_disable(void);
|
|
void speaker_tone(u16 freq, unsigned int duration);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup video Video functions
|
|
* @ingroup input
|
|
* @{
|
|
*/
|
|
int video_console_init(void);
|
|
void video_console_putchar(unsigned int ch);
|
|
void video_console_putc(u8 row, u8 col, unsigned int ch);
|
|
void video_console_clear(void);
|
|
void video_console_cursor_enable(int state);
|
|
void video_console_get_cursor(unsigned int *x, unsigned int *y, unsigned int *en);
|
|
void video_console_set_cursor(unsigned int cursorx, unsigned int cursory);
|
|
/** @} */
|
|
|
|
/* drivers/option.c */
|
|
int get_option(void *dest, char *name);
|
|
|
|
/**
|
|
* @defgroup console Console functions
|
|
* @{
|
|
*/
|
|
void console_init(void);
|
|
int putchar(unsigned int c);
|
|
int puts(const char *s);
|
|
int havekey(void);
|
|
int getchar(void);
|
|
int getchar_timeout(int *ms);
|
|
|
|
extern int last_putchar;
|
|
|
|
struct console_input_driver;
|
|
struct console_input_driver {
|
|
struct console_input_driver *next;
|
|
int (*havekey) (void);
|
|
int (*getchar) (void);
|
|
};
|
|
|
|
struct console_output_driver;
|
|
struct console_output_driver {
|
|
struct console_output_driver *next;
|
|
void (*putchar) (unsigned int);
|
|
};
|
|
|
|
void console_add_output_driver(struct console_output_driver *out);
|
|
void console_add_input_driver(struct console_input_driver *in);
|
|
|
|
#define havechar havekey
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup ctype Character type functions
|
|
* @{
|
|
*/
|
|
int isalnum(int c);
|
|
int isalpha(int c);
|
|
int isascii(int c);
|
|
int isblank(int c);
|
|
int iscntrl(int c);
|
|
int isdigit(int c);
|
|
int isgraph(int c);
|
|
int islower(int c);
|
|
int isprint(int c);
|
|
int ispunct(int c);
|
|
int isspace(int c);
|
|
int isupper(int c);
|
|
int isxdigit(int c);
|
|
int tolower(int c);
|
|
int toupper(int c);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup ipchecksum IP checksum functions
|
|
* @{
|
|
*/
|
|
unsigned short ipchksum(const void *ptr, unsigned long nbytes);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup malloc Memory allocation functions
|
|
* @{
|
|
*/
|
|
void free(void *ptr);
|
|
void *malloc(size_t size);
|
|
void *calloc(size_t nmemb, size_t size);
|
|
void *realloc(void *ptr, size_t size);
|
|
void *memalign(size_t align, size_t size);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup exec Execution functions
|
|
* @{
|
|
*/
|
|
int exec(long addr, int argc, char **argv);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup misc Misc functions
|
|
* @{
|
|
*/
|
|
int bcd2dec(int b);
|
|
int dec2bcd(int d);
|
|
int abs(int j);
|
|
long int labs(long int j);
|
|
long long int llabs(long long int j);
|
|
u8 bin2hex(u8 b);
|
|
u8 hex2bin(u8 h);
|
|
void fatal(const char *msg) __attribute__ ((noreturn));
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup memory Memory manipulation functions
|
|
* @{
|
|
*/
|
|
void *memset(void *s, int c, size_t n);
|
|
void *memcpy(void *dst, const void *src, size_t n);
|
|
void *memmove(void *dst, const void *src, size_t n);
|
|
int memcmp(const void *s1, const void *s2, size_t len);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup printf Print functions
|
|
* @{
|
|
*/
|
|
int snprintf(char *str, size_t size, const char *fmt, ...);
|
|
int sprintf(char *str, const char *fmt, ...);
|
|
int vsnprintf(char *str, size_t size, const char *fmt, va_list ap);
|
|
int vsprintf(char *str, const char *fmt, va_list ap);
|
|
int printf(const char *fmt, ...);
|
|
int vprintf(const char *fmt, va_list ap);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup rand Random number generator functions
|
|
* @{
|
|
*/
|
|
int rand_r(unsigned int *seed);
|
|
int rand(void);
|
|
void srand(unsigned int seed);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup hash Hashing functions
|
|
* @{
|
|
*/
|
|
#define SHA1_BLOCK_LENGTH 64
|
|
#define SHA1_DIGEST_LENGTH 20
|
|
typedef struct {
|
|
u32 state[5];
|
|
u64 count;
|
|
u8 buffer[SHA1_BLOCK_LENGTH];
|
|
} SHA1_CTX;
|
|
void SHA1Init(SHA1_CTX *context);
|
|
void SHA1Transform(u32 state[5], const u8 buffer[SHA1_BLOCK_LENGTH]);
|
|
void SHA1Update(SHA1_CTX *context, const u8 *data, size_t len);
|
|
void SHA1Final(u8 digest[SHA1_DIGEST_LENGTH], SHA1_CTX *context);
|
|
u8 *sha1(const u8 *data, size_t len, u8 *buf);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup string String functions
|
|
* @{
|
|
*/
|
|
size_t strnlen(const char *str, size_t maxlen);
|
|
size_t strlen(const char *str);
|
|
int strcmp(const char *s1, const char *s2);
|
|
int strncmp(const char *s1, const char *s2, size_t maxlen);
|
|
char *strncpy(char *d, const char *s, size_t n);
|
|
char *strcpy(char *d, const char *s);
|
|
char *strncat(char *d, const char *s, size_t n);
|
|
char *strchr(const char *s, int c);
|
|
char *strdup(const char *s);
|
|
char *strstr(const char *h, const char *n);
|
|
char *strsep(char **stringp, const char *delim);
|
|
unsigned int strtoul(const char *s, char **nptr, int base);
|
|
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup time Time functions
|
|
* @{
|
|
*/
|
|
|
|
/** System time structure */
|
|
struct timeval {
|
|
time_t tv_sec; /**< Seconds */
|
|
suseconds_t tv_usec; /**< Microseconds */
|
|
};
|
|
|
|
int gettimeofday(struct timeval *tv, void *tz);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup lar LAR functions
|
|
* @{
|
|
*/
|
|
|
|
/** LAR file header */
|
|
struct LAR {
|
|
void *start; /**< Location of the LAR in memory */
|
|
int cindex; /**< Next file to return in readlar() */
|
|
int count; /**< Number of entries in the header cache */
|
|
int alloc; /**< Number of slots in the header cache */
|
|
int eof; /**< Last entry in the header cache */
|
|
void **headers; /**< Pointer to the header cache */
|
|
};
|
|
|
|
/** A structure representing the next LAR entry */
|
|
struct larent {
|
|
u8 name[LAR_MAX_PATHLEN]; /**< The name of the next LAR entry */
|
|
};
|
|
|
|
/** A structure containing information about a LAR file */
|
|
struct larstat {
|
|
u32 len; /**< Length of the file in the LAR */
|
|
u32 reallen; /**< Length of the uncompressed file */
|
|
u32 checksum; /**< Checksum of the uncompressed file */
|
|
u32 compchecksum; /**< Checksum of the compressed file in the LAR */
|
|
u32 offset; /**< Offset of the file in the LAR */
|
|
u32 compression; /**< Compression type of the file */
|
|
u64 entry; /**< Entry point of the file for executables */
|
|
u64 loadaddress; /**< Address in memory to put the uncompressed file */
|
|
};
|
|
|
|
/** A structure representing a LAR file */
|
|
struct LFILE {
|
|
struct LAR *lar; /**< Pointer to the LAR struct */
|
|
struct lar_header *header; /**< Pointer to the header struct */
|
|
u32 size; /**< Size of the file */
|
|
void *start; /**< Start of the file in memory */
|
|
u32 offset; /**< Offset of the file in the LAR */
|
|
};
|
|
|
|
struct LAR *openlar(void *addr);
|
|
int closelar(struct LAR *lar);
|
|
struct larent *readlar(struct LAR *lar);
|
|
void rewindlar(struct LAR *lar);
|
|
int larstat(struct LAR *lar, const char *path, struct larstat *buf);
|
|
void *larfptr(struct LAR *lar, const char *filename);
|
|
int lfverify(struct LAR *lar, const char *filename);
|
|
struct LFILE *lfopen(struct LAR *lar, const char *filename);
|
|
int lfread(void *ptr, size_t size, size_t nmemb, struct LFILE *stream);
|
|
|
|
#define SEEK_SET 0 /**< The seek offset is absolute. */
|
|
#define SEEK_CUR 1 /**< The seek offset is against the current position. */
|
|
#define SEEK_END 2 /**< The seek offset is against the end of the file. */
|
|
|
|
int lfseek(struct LFILE *stream, long offset, int whence);
|
|
int lfclose(struct LFILE *file);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup info System information functions
|
|
* This module contains functions that return information about the system
|
|
* @{
|
|
*/
|
|
|
|
int sysinfo_have_multiboot(unsigned long *addr);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup arch Architecture specific functions
|
|
* This module contains global architecture specific functions.
|
|
* All architectures are expected to define these functions.
|
|
* @{
|
|
*/
|
|
int get_coreboot_info(struct sysinfo_t *info);
|
|
int get_multiboot_info(struct sysinfo_t *info);
|
|
|
|
void lib_get_sysinfo(void);
|
|
|
|
/* Timer functions - defined by each architecture. */
|
|
unsigned int get_cpu_speed(void);
|
|
void ndelay(unsigned int n);
|
|
void udelay(unsigned int n);
|
|
void mdelay(unsigned int n);
|
|
void delay(unsigned int n);
|
|
|
|
#define abort() halt() /**< Alias for the halt() function */
|
|
|
|
/**
|
|
* Stop execution and halt the processor (this function does not return).
|
|
*/
|
|
void halt(void) __attribute__ ((noreturn));
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup readline Readline functions
|
|
* This interface provides a simple implementation of the standard readline()
|
|
* and getline() functions. They read a line of input from the console.
|
|
* @{
|
|
*/
|
|
char *readline(const char *prompt);
|
|
int getline(char *buffer, int len);
|
|
/** @} */
|
|
|
|
#endif
|