| /* |
| * 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 <ctype.h> |
| #include <die.h> |
| #include <endian.h> |
| #include <ipchksum.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdarg.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <arch/types.h> |
| #include <arch/io.h> |
| #include <arch/virtual.h> |
| #include <sysinfo.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])) |
| |
| 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); |
| /** @} */ |
| |
| /** |
| * @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 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 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); |
| |
| #endif |