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Add CONFIG_LTO to use GCC Link-Time Optimizations to try to reduce the flash footprint of the firmware. Add additional protection to some functions/data to avoid removal by the linker when their usage is not obvious. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=none TEST=make buildall (with and without LTO enable on all boards) Change-Id: I586b8c1eda4592b416c85383b65153c1d5ab0059 Reviewed-on: https://chromium-review.googlesource.com/271291 Trybot-Ready: Vincent Palatin <vpalatin@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Alec Berg <alecaberg@chromium.org> Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
149 lines
4.1 KiB
C
149 lines
4.1 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Debug console for Chrome EC */
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#ifndef __CROS_EC_CONSOLE_H
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#define __CROS_EC_CONSOLE_H
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#include "common.h"
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/* Console command; used by DECLARE_CONSOLE_COMMAND macro. */
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struct console_command {
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/* Command name. Case-insensitive. */
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const char *name;
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/* Handler for the command. argv[0] will be the command name. */
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int (*handler)(int argc, char **argv);
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#ifdef CONFIG_CONSOLE_CMDHELP
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/* Description of args */
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const char *argdesc;
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/* Short help for command */
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const char *shorthelp;
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#endif
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};
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/* Console channels */
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enum console_channel {
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CC_COMMAND = 0, /* Console command (interactive I/O). Use this only
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* inside a console command routine. */
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CC_ACCEL,
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CC_CHARGER,
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CC_CHIPSET,
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CC_CLOCK,
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CC_DMA,
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CC_EVENTS,
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CC_GESTURE,
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CC_GPIO,
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CC_HOSTCMD,
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CC_I2C,
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CC_KEYBOARD,
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CC_KEYSCAN,
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CC_LIDANGLE,
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CC_LIGHTBAR,
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CC_LPC,
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CC_MOTION_LID,
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CC_MOTION_SENSE,
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CC_PD_HOST_CMD,
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CC_PORT80,
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CC_PWM,
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CC_SPI,
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CC_SWITCH,
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CC_SYSTEM,
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CC_TASK,
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CC_THERMAL,
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CC_USB,
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CC_USBCHARGE,
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CC_USBPD,
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CC_VBOOT,
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CC_HOOK,
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/* Channel count; not itself a channel */
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CC_CHANNEL_COUNT
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};
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/* Mask in channel_mask for a particular channel */
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#define CC_MASK(channel) (1UL << (channel))
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/* Mask to use to enable all channels */
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#define CC_ALL 0xffffffffUL
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/**
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* Put a string to the console channel.
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*
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* @param channel Output chanel
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* @param outstr String to write
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*
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* @return non-zero if output was truncated.
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*/
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int cputs(enum console_channel channel, const char *outstr);
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/**
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* Print formatted output to the console channel.
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*
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* @param channel Output chanel
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* @param format Format string; see printf.h for valid formatting codes
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*
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* @return non-zero if output was truncated.
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*/
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int cprintf(enum console_channel channel, const char *format, ...);
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/**
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* Print formatted output with timestamp. This is like:
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* cprintf(channel, "[%T " + format + "]\n", ...)
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*
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* @param channel Output channel
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* @param format Format string; see printf.h for valid formatting codes
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*
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* @return non-zero if output was truncated.
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*/
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int cprints(enum console_channel channel, const char *format, ...);
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/**
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* Flush the console output for all channels.
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*/
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void cflush(void);
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/* Convenience macros for printing to the command channel.
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*
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* Modules may define similar macros in their .c files for their own use; it is
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* recommended those module-specific macros be named CPUTS and CPRINTF. */
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#define ccputs(outstr) cputs(CC_COMMAND, outstr)
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/* gcc allows variable arg lists in macros; see
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* http://gcc.gnu.org/onlinedocs/gcc/Variadic-Macros.html */
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#define ccprintf(format, args...) cprintf(CC_COMMAND, format, ## args)
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#define ccprints(format, args...) cprints(CC_COMMAND, format, ## args)
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/**
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* Called by UART when a line of input is pending.
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*/
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void console_has_input(void);
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/**
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* Register a console command handler.
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*
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* @param name Command name; must not be the beginning of another
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* existing command name. Note this is NOT in quotes
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* so it can be concatenated to form a struct name.
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* @param routine Command handling routine, of the form
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* int handler(int argc, char **argv)
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* @param argdesc String describing arguments to command; NULL if none.
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* @param shorthelp String with one-line description of command.
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* @param longhelp String with long description of command.
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*/
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#ifdef CONFIG_CONSOLE_CMDHELP
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#define DECLARE_CONSOLE_COMMAND(name, routine, argdesc, shorthelp, longhelp) \
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static const char __con_cmd_label_##name[] = #name; \
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const struct console_command __keep __con_cmd_##name \
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__attribute__((section(".rodata.cmds." #name))) \
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= {__con_cmd_label_##name, routine, argdesc, shorthelp}
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#else
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#define DECLARE_CONSOLE_COMMAND(name, routine, argdesc, shorthelp, longhelp) \
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static const char __con_cmd_label_##name[] = #name; \
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const struct console_command __keep __con_cmd_##name \
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__attribute__((section(".rodata.cmds." #name))) \
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= {__con_cmd_label_##name, routine}
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#endif
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#endif /* __CROS_EC_CONSOLE_H */
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