415 lines
12 KiB
C
415 lines
12 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 <libpayload-config.h>
|
|
#include <cbgfx.h>
|
|
#include <ctype.h>
|
|
#include <die.h>
|
|
#include <endian.h>
|
|
#include <fmap_serialized.h>
|
|
#include <ipchksum.h>
|
|
#include <kconfig.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <arch/types.h>
|
|
#include <arch/io.h>
|
|
#include <arch/virtual.h>
|
|
#include <sysinfo.h>
|
|
#include <pci.h>
|
|
#include <archive.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]))
|
|
|
|
static inline u32 div_round_up(u32 n, u32 d) { return (n + d - 1) / d; }
|
|
|
|
#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 storage driver functions
|
|
* @{
|
|
*/
|
|
void storage_initialize(void);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup usb USB functions
|
|
* @{
|
|
*/
|
|
int usb_initialize(void);
|
|
int usb_exit (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);
|
|
void keyboard_disconnect(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_console_init(void);
|
|
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_init(void);
|
|
int video_console_init(void);
|
|
void video_get_rows_cols(unsigned int *rows, unsigned int *cols);
|
|
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);
|
|
/*
|
|
* print characters on video console with colors. note that there is a size
|
|
* restriction for the internal buffer. so, output string can be truncated.
|
|
*/
|
|
enum video_printf_align {
|
|
VIDEO_PRINTF_ALIGN_KEEP = 0,
|
|
VIDEO_PRINTF_ALIGN_LEFT,
|
|
VIDEO_PRINTF_ALIGN_CENTER,
|
|
VIDEO_PRINTF_ALIGN_RIGHT,
|
|
};
|
|
void video_printf(int foreground, int background, enum video_printf_align align,
|
|
const char *fmt, ...);
|
|
/** @} */
|
|
|
|
/**
|
|
* @defgroup cbmem_console CBMEM memory console.
|
|
* @ingroup input
|
|
* @{
|
|
*/
|
|
void cbmem_console_init(void);
|
|
void cbmem_console_write(const void *buffer, size_t count);
|
|
/** @} */
|
|
|
|
/* drivers/option.c */
|
|
struct nvram_accessor {
|
|
u8 (*read)(u8 reg);
|
|
void (*write)(u8 val, u8 reg);
|
|
};
|
|
|
|
extern u8 *mem_accessor_base;
|
|
extern struct nvram_accessor *use_nvram, *use_mem;
|
|
|
|
struct cb_cmos_option_table *get_system_option_table(void);
|
|
int options_checksum_valid(const struct nvram_accessor *nvram);
|
|
void fix_options_checksum_with(const struct nvram_accessor *nvram);
|
|
void fix_options_checksum(void);
|
|
|
|
struct cb_cmos_entries *first_cmos_entry(struct cb_cmos_option_table *option_table);
|
|
struct cb_cmos_entries *next_cmos_entry(struct cb_cmos_entries *cur);
|
|
|
|
struct cb_cmos_enums *first_cmos_enum(struct cb_cmos_option_table *option_table);
|
|
struct cb_cmos_enums *next_cmos_enum(struct cb_cmos_enums *cmos_enum);
|
|
struct cb_cmos_enums *first_cmos_enum_of_id(struct cb_cmos_option_table *option_table, int id);
|
|
struct cb_cmos_enums *next_cmos_enum_of_id(struct cb_cmos_enums *cmos_enum, int id);
|
|
|
|
int get_option_with(const struct nvram_accessor *nvram, struct cb_cmos_option_table *option_table, void *dest, const char *name);
|
|
int get_option_from(struct cb_cmos_option_table *option_table, void *dest, const char *name);
|
|
int get_option(void *dest, const char *name);
|
|
int set_option_with(const struct nvram_accessor *nvram, struct cb_cmos_option_table *option_table, const void *value, const char *name);
|
|
int set_option(const void *value, const char *name);
|
|
int get_option_as_string(const struct nvram_accessor *nvram, struct cb_cmos_option_table *option_table, char **dest, const char *name);
|
|
int set_option_from_string(const struct nvram_accessor *nvram, struct cb_cmos_option_table *option_table, const char *value, const char *name);
|
|
|
|
/**
|
|
* @defgroup console Console functions
|
|
* @{
|
|
*/
|
|
typedef enum {
|
|
CONSOLE_INPUT_TYPE_UNKNOWN = 0,
|
|
CONSOLE_INPUT_TYPE_USB,
|
|
} console_input_type;
|
|
|
|
void console_init(void);
|
|
void console_write(const void *buffer, size_t count);
|
|
int putchar(unsigned int c);
|
|
int puts(const char *s);
|
|
int havekey(void);
|
|
int getchar(void);
|
|
int getchar_timeout(int *ms);
|
|
console_input_type last_key_input_type(void);
|
|
|
|
extern int last_putchar;
|
|
|
|
struct console_input_driver;
|
|
struct console_input_driver {
|
|
struct console_input_driver *next;
|
|
int (*havekey) (void);
|
|
int (*getchar) (void);
|
|
console_input_type input_type;
|
|
};
|
|
|
|
struct console_output_driver;
|
|
struct console_output_driver {
|
|
struct console_output_driver *next;
|
|
void (*putchar) (unsigned int);
|
|
void (*write) (const void *, size_t);
|
|
};
|
|
|
|
void console_add_output_driver(struct console_output_driver *out);
|
|
void console_add_input_driver(struct console_input_driver *in);
|
|
int console_remove_output_driver(void *function);
|
|
|
|
#define havechar havekey
|
|
/** @} */
|
|
|
|
|
|
/**
|
|
* @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 hexdump(const void *memory, size_t length);
|
|
void fatal(const char *msg) __attribute__ ((noreturn));
|
|
|
|
/* Count Leading Zeroes: clz(0) == 32, clz(0xf) == 28, clz(1 << 31) == 0 */
|
|
static inline int clz(u32 x) { return x ? __builtin_clz(x) : sizeof(x) * 8; }
|
|
/* Integer binary logarithm (rounding down): log2(0) == -1, log2(5) == 2 */
|
|
static inline int log2(u32 x) { return sizeof(x) * 8 - clz(x) - 1; }
|
|
/* Find First Set: __ffs(0xf) == 0, __ffs(0) == -1, __ffs(1 << 31) == 31 */
|
|
static inline int __ffs(u32 x) { return log2(x & (u32)(-(s32)x)); }
|
|
/** @} */
|
|
|
|
|
|
/**
|
|
* @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 SHA1Pad(SHA1_CTX *context);
|
|
void SHA1Final(u8 digest[SHA1_DIGEST_LENGTH], SHA1_CTX *context);
|
|
u8 *sha1(const u8 *data, size_t len, u8 *buf);
|
|
/** @} */
|
|
|
|
/**
|
|
* @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 *get_cb_header_ptr(void);
|
|
|
|
int lib_get_sysinfo(void);
|
|
void lib_sysinfo_get_memranges(struct memrange **ranges,
|
|
uint64_t *nranges);
|
|
|
|
/* Timer functions. */
|
|
/* Defined by each architecture. */
|
|
unsigned int get_cpu_speed(void);
|
|
uint64_t timer_hz(void);
|
|
uint64_t timer_raw_value(void);
|
|
uint64_t timer_us(uint64_t base);
|
|
/* Generic. */
|
|
void ndelay(unsigned int n);
|
|
void udelay(unsigned int n);
|
|
void mdelay(unsigned int n);
|
|
void delay(unsigned int n);
|
|
|
|
/**
|
|
* @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);
|
|
/** @} */
|
|
|
|
/* Defined in arch/${ARCH}/selfboot.c */
|
|
void selfboot(void *entry);
|
|
|
|
/* Enter remote GDB mode. Will initialize connection if not already up. */
|
|
void gdb_enter(void);
|
|
/* Disconnect existing GDB connection if one exists. */
|
|
void gdb_exit(s8 exit_status);
|
|
|
|
/* look for area "name" in "fmap", setting offset and size to describe it.
|
|
Returns 0 on success, < 0 on error. */
|
|
int fmap_region_by_name(const uint32_t fmap_offset, const char * const name,
|
|
uint32_t * const offset, uint32_t * const size);
|
|
#endif
|