388 lines
11 KiB
C
388 lines
11 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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/**
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* @mainpage
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*
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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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#ifndef _LIBPAYLOAD_H
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#define _LIBPAYLOAD_H
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#include <libpayload-config.h>
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#include <ctype.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.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 <pci.h>
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#ifdef CONFIG_LAR
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#include <lar.h>
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#endif
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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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#define MAX_ARGC_COUNT 10
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/*
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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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/**
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* @defgroup nvram NVRAM and RTC functions
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* @{
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*/
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#define NVRAM_RTC_SECONDS 0 /**< RTC Seconds offset in CMOS */
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#define NVRAM_RTC_MINUTES 2 /**< RTC Minutes offset in CMOS */
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#define NVRAM_RTC_HOURS 4 /**< RTC Hours offset in CMOS */
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#define NVRAM_RTC_DAY 7 /**< RTC Days offset in CMOS */
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#define NVRAM_RTC_MONTH 8 /**< RTC Month offset in CMOS */
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#define NVRAM_RTC_YEAR 9 /**< RTC Year offset in CMOS */
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#define NVRAM_RTC_FREQ_SELECT 10 /**< RTC Update Status Register */
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#define NVRAM_RTC_UIP 0x80
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/** Broken down time structure */
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struct tm {
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int tm_sec; /**< Number of seconds after the minute */
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int tm_min; /**< Number of minutes after the hour */
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int tm_hour; /**< Number of hours past midnight */
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int tm_mday; /**< The day of the month */
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int tm_mon; /**< The month of the year */
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int tm_year; /**< The number of years since 1900 */
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int tm_wday; /**< The day of the week */
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int tm_yday; /**< The number of days since January 1 */
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int tm_isdst; /**< A flag indicating daylight savings time */
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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 usb USB functions
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* @{
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*/
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int usb_initialize(void);
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int usbhid_havechar(void);
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int usbhid_getchar(void);
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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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extern void (*reset_handler)(void);
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int add_reset_handler(void (*new_handler)(void));
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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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int keyboard_set_layout(char *country);
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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_hardware_init(int port, int speed, int word_bits, int parity, int stop_bits);
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void serial_putchar(unsigned int 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_reverse(void);
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void serial_end_reverse(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_color(short fg, short bg);
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void serial_cursor_enable(int state);
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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(unsigned 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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struct console_input_driver;
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struct console_input_driver {
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struct console_input_driver *next;
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int (*havekey) (void);
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int (*getchar) (void);
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};
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struct console_output_driver;
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struct console_output_driver {
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struct console_output_driver *next;
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void (*putchar) (unsigned int);
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};
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void console_add_output_driver(struct console_output_driver *out);
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void console_add_input_driver(struct console_input_driver *in);
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#define havechar havekey
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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 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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void fatal(const char *msg) __attribute__ ((noreturn));
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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 time Time functions
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* @{
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*/
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/** System time structure */
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struct timeval {
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time_t tv_sec; /**< Seconds */
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suseconds_t tv_usec; /**< Microseconds */
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};
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int gettimeofday(struct timeval *tv, void *tz);
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/** @} */
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#ifdef CONFIG_LAR
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/**
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* @defgroup lar LAR functions
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* @{
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*/
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/** LAR file header */
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struct LAR {
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void *start; /**< Location of the LAR in memory */
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int cindex; /**< Next file to return in readlar() */
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int count; /**< Number of entries in the header cache */
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int alloc; /**< Number of slots in the header cache */
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int eof; /**< Last entry in the header cache */
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void **headers; /**< Pointer to the header cache */
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};
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/** A structure representing the next LAR entry */
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struct larent {
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u8 name[LAR_MAX_PATHLEN]; /**< The name of the next LAR entry */
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};
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/** A structure containing information about a LAR file */
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struct larstat {
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u32 len; /**< Length of the file in the LAR */
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u32 reallen; /**< Length of the uncompressed file */
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u32 checksum; /**< Checksum of the uncompressed file */
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u32 compchecksum; /**< Checksum of the compressed file in the LAR */
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u32 offset; /**< Offset of the file in the LAR */
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u32 compression; /**< Compression type of the file */
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u64 entry; /**< Entry point of the file for executables */
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u64 loadaddress; /**< Address in memory to put the uncompressed file */
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};
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/** A structure representing a LAR file */
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struct LFILE {
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struct LAR *lar; /**< Pointer to the LAR struct */
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struct lar_header *header; /**< Pointer to the header struct */
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u32 size; /**< Size of the file */
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void *start; /**< Start of the file in memory */
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u32 offset; /**< Offset of the file in the LAR */
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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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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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#endif
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/**
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* @defgroup info System information functions
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* This module contains functions that return information about the system
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* @{
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*/
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int sysinfo_have_multiboot(unsigned long *addr);
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/** @} */
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/**
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* @defgroup arch Architecture specific functions
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* This module contains global architecture specific functions.
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* All architectures are expected to define these 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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int get_multiboot_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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/**
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* @defgroup readline Readline functions
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* This interface provides a simple implementation of the standard readline()
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* and getline() functions. They read a line of input from the console.
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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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