406 lines
9.5 KiB
C
406 lines
9.5 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2008 Advanced Micro Devices, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/** @mainpage
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* @section intro Introduction
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* libpayload is a small BSD-licensed static library (a lightweight
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* implementation of common and useful functions) intended to be used
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* as a basis for coreboot payloads.
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*
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* @section example Example
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* Here is an example of a very simple payload:
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* @include sample/hello.c
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*
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*/
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#ifndef _LIBPAYLOAD_H
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#define _LIBPAYLOAD_H
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#include <stddef.h>
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#include <arch/types.h>
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#include <arch/io.h>
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#include <arch/virtual.h>
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#include <sysinfo.h>
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#include <stdarg.h>
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#include <lar.h>
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#include <pci.h>
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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#define LITTLE_ENDIAN 1234
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#define BIG_ENDIAN 4321
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#define EXIT_SUCCESS 0
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#define EXIT_FAILURE 1
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#define RAND_MAX 0x7fffffff
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/* Payload information parameters - these are used to pass information
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* to the entity loading the payload
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* Usage: PAYLOAD_INFO(key, value)
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* Example: PAYLOAD_INFO(name, "CoreInfo!")
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*/
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#define _pstruct(key) __pinfo_ ##key
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#define PAYLOAD_INFO(key, value) \
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static const char _pstruct(key)[] \
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__attribute__((__used__)) \
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__attribute__((section(".note.pinfo"),unused)) = #key "=" value
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/* Some NVRAM byte definitions */
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#define NVRAM_RTC_SECONDS 0
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#define NVRAM_RTC_MINUTES 2
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#define NVRAM_RTC_HOURS 4
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#define NVRAM_RTC_DAY 7
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#define NVRAM_RTC_MONTH 8
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#define NVRAM_RTC_YEAR 9
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#define NVRAM_RTC_FREQ_SELECT 10
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#define NVRAM_RTC_UIP 0x80
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/**
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* @defgroup nvram NVRAM and RTC functions
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* @{
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*/
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struct tm {
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int tm_sec;
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int tm_min;
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int tm_hour;
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int tm_mday;
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int tm_mon;
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int tm_year;
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int tm_wday;
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int tm_yday;
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int tm_isdst;
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};
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u8 nvram_read(u8 addr);
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void nvram_write(u8 val, u8 addr);
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int nvram_updating(void);
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void rtc_read_clock(struct tm *tm);
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/** @} */
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/**
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* @defgroup input Device functions
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* @{ @}
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*/
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/**
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* @defgroup keyboard Keyboard functions
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* @ingroup input
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* @{
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*/
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void keyboard_init(void);
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int keyboard_havechar(void);
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unsigned char keyboard_get_scancode(void);
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int keyboard_getchar(void);
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/** @} */
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/**
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* @defgroup serial Serial functions
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* @ingroup input
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* @{
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*/
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void serial_init(void);
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void serial_putchar(unsigned char c);
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int serial_havechar(void);
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int serial_getchar(void);
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void serial_clear(void);
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void serial_start_bold(void);
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void serial_end_bold(void);
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void serial_start_altcharset(void);
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void serial_end_altcharset(void);
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void serial_set_cursor(int y, int x);
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/** @} */
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/**
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* @defgroup speaker Speaker functions
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* @ingroup input
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* @{
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*/
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void speaker_enable(u16 freq);
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void speaker_disable(void);
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void speaker_tone(u16 freq, unsigned int duration);
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/** @} */
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/**
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* @defgroup video Video functions
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* @ingroup input
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* @{
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*/
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int video_console_init(void);
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void video_console_putchar(unsigned int ch);
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void video_console_putc(u8 row, u8 col, unsigned int ch);
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void video_console_clear(void);
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void video_console_cursor_enable(int state);
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void video_console_get_cursor(unsigned int *x, unsigned int *y, unsigned int *en);
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void video_console_set_cursor(unsigned int cursorx, unsigned int cursory);
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/** @} */
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/* drivers/option.c */
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int get_option(void *dest, char *name);
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/**
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* @defgroup console Console functions
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* @{
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*/
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void console_init(void);
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int putchar(int c);
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int puts(const char *s);
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int havekey(void);
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int getchar(void);
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int getchar_timeout(int *ms);
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extern int last_putchar;
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#define havechar havekey
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/** @} */
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/**
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* @defgroup ctype Character Type Functions
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* @{
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*/
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int isalnum(int c);
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int isalpha(int c);
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int isascii(int c);
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int isblank(int c);
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int iscntrl(int c);
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int isdigit(int c);
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int isgraph(int c);
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int islower(int c);
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int isprint(int c);
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int ispunct(int c);
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int isspace(int c);
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int isupper(int c);
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int isxdigit(int c);
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int tolower(int c);
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int toupper(int c);
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/** @} */
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/**
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* @defgroup ipchecksum IP Checksum Functions
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* @{
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*/
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unsigned short ipchksum(const void *ptr, unsigned long nbytes);
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/** @} */
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/**
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* @defgroup malloc Memory Allocation Functions
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* @{
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*/
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void free(void *ptr);
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void *malloc(size_t size);
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void *calloc(size_t nmemb, size_t size);
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void *realloc(void *ptr, size_t size);
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/** @} */
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/**
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* @defgroup exec Execution Functions
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* @{
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*/
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int exec(long addr, int argc, char **argv);
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/** @} */
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/**
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* @defgroup misc Misc Functions
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* @{
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*/
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int bcd2dec(int b);
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int dec2bcd(int d);
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int abs(int j);
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long int labs(long int j);
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long long int llabs(long long int j);
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u8 bin2hex(u8 b);
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u8 hex2bin(u8 h);
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/** @} */
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/**
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* @defgroup memory Memory Manipulation Functions
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* @{
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*/
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void *memset(void *s, int c, size_t n);
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void *memcpy(void *dst, const void *src, size_t n);
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void *memmove(void *dst, const void *src, size_t n);
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int memcmp(const void *s1, const void *s2, size_t len);
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/** @} */
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/**
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* @defgroup printf Print Functions
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* @{
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*/
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int snprintf(char *str, size_t size, const char *fmt, ...);
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int sprintf(char *str, const char *fmt, ...);
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int vsnprintf(char *str, size_t size, const char *fmt, va_list ap);
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int vsprintf(char *str, const char *fmt, va_list ap);
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int printf(const char *fmt, ...);
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int vprintf(const char *fmt, va_list ap);
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/** @} */
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/**
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* @defgroup rand Random Number Generator Functions
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* @{
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*/
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int rand_r(unsigned int *seed);
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int rand(void);
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void srand(unsigned int seed);
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/** @} */
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/**
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* @defgroup hash Hashing Functions
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* @{
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*/
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#define SHA1_BLOCK_LENGTH 64
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#define SHA1_DIGEST_LENGTH 20
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typedef struct {
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u32 state[5];
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u64 count;
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u8 buffer[SHA1_BLOCK_LENGTH];
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} SHA1_CTX;
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void SHA1Init(SHA1_CTX *context);
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void SHA1Transform(u32 state[5], const u8 buffer[SHA1_BLOCK_LENGTH]);
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void SHA1Update(SHA1_CTX *context, const u8 *data, size_t len);
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void SHA1Final(u8 digest[SHA1_DIGEST_LENGTH], SHA1_CTX *context);
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u8 *sha1(const u8 *data, size_t len, u8 *buf);
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/** @} */
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/**
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* @defgroup string String Functions
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* @{
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*/
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size_t strnlen(const char *str, size_t maxlen);
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size_t strlen(const char *str);
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int strcmp(const char *s1, const char *s2);
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int strncmp(const char *s1, const char *s2, size_t maxlen);
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char *strncpy(char *d, const char *s, size_t n);
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char *strcpy(char *d, const char *s);
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char *strncat(char *d, const char *s, size_t n);
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char *strchr(const char *s, int c);
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char *strdup(const char *s);
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char *strstr(const char *h, const char *n);
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/** @} */
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/**
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* @defgroup time Time Functions
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* @{
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*/
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struct timeval {
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time_t tv_sec;
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suseconds_t tv_usec;
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};
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int gettimeofday(struct timeval *tv, void *tz);
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/** @} */
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/**
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* @defgroup lar LAR Functions
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* @{
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*/
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struct LAR {
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void * start;
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int cindex;
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int count;
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int alloc;
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int eof;
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void **headers;
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};
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struct larent {
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u8 name[LAR_MAX_PATHLEN];
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};
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struct larstat {
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u32 len;
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u32 reallen;
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u32 checksum;
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u32 compchecksum;
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u32 offset;
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u32 compression;
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u64 entry;
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u64 loadaddress;
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};
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struct LFILE {
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struct LAR *lar;
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struct lar_header *header;
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u32 size;
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void *start;
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u32 offset;
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};
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struct LAR *openlar(void *addr);
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int closelar(struct LAR *lar);
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struct larent *readlar(struct LAR *lar);
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void rewindlar(struct LAR *lar);
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int larstat(struct LAR *lar, const char *path, struct larstat *buf);
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void *larfptr(struct LAR *lar, const char *filename);
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int lfverify(struct LAR *lar, const char *filename);
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struct LFILE * lfopen(struct LAR *lar, const char *filename);
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int lfread(void *ptr, size_t size, size_t nmemb, struct LFILE *stream);
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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int lfseek(struct LFILE *stream, long offset, int whence);
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int lfclose(struct LFILE *file);
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/** @} */
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/**
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* @defgroup arch Architecture Specific Functions
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* @{
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*/
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int get_coreboot_info(struct sysinfo_t *info);
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void lib_get_sysinfo(void);
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/* Timer functions - defined by each architecture. */
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unsigned int get_cpu_speed(void);
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void ndelay(unsigned int n);
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void udelay(unsigned int n);
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void mdelay(unsigned int n);
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void delay(unsigned int n);
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#define abort() halt()
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void halt(void) __attribute__ ((noreturn));
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void fatal(const char* msg) __attribute__ ((noreturn));
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/** @} */
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/**
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* @defgroup readline Readline Functions
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* @{
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*/
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char * readline(const char * prompt);
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int getline(char *buffer, int len);
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/** @} */
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#endif
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