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/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Console output module for Chrome EC */
#include "console.h"
#include "uart.h"
#include "util.h"
/* Default to all channels active */
#ifndef CC_DEFAULT
#define CC_DEFAULT CC_ALL
#endif
static uint32_t channel_mask = CC_DEFAULT;
static uint32_t channel_mask_saved = CC_DEFAULT;
/*
* List of channel names; must match enum console_channel.
*
* We could do something fancy and macro-y with this like ec.tasklist, so that
* the channel name list and console_channel enum come from the same header
* file. That's clever, but I'm not convinced it's more readable or
* maintainable than the two simple lists we have now.
*
* We could also try to get clever with #ifdefs or board-specific lists of
* channel names, so that for example boards without port80 support don't waste
* binary size on the channel name string for "port80". Pruning the channel
* list might also become more important if we have >32 channels - for example,
* if we decide to replace enum console_channel with enum module_id.
*/
static const char * const channel_names[] = {
"command",
"accel",
"charger",
"chipset",
"clock",
"dma",
"events",
"gpio",
"hostcmd",
"i2c",
"keyboard",
"keyscan",
"lightbar",
"lpc",
"motionsense",
"port80",
"pwm",
"spi",
"switch",
"system",
"task",
"thermal",
"usbcharge",
"vboot",
"hook",
};
BUILD_ASSERT(ARRAY_SIZE(channel_names) == CC_CHANNEL_COUNT);
/*****************************************************************************/
/* Channel-based console output */
int cputs(enum console_channel channel, const char *outstr)
{
/* Filter out inactive channels */
if (!(CC_MASK(channel) & channel_mask))
return EC_SUCCESS;
return uart_puts(outstr);
}
int cprintf(enum console_channel channel, const char *format, ...)
{
int rv;
va_list args;
/* Filter out inactive channels */
if (!(CC_MASK(channel) & channel_mask))
return EC_SUCCESS;
va_start(args, format);
rv = uart_vprintf(format, args);
va_end(args);
return rv;
}
void cflush(void)
{
uart_flush_output();
}
/*****************************************************************************/
/* Console commands */
/* Set active channels */
static int command_ch(int argc, char **argv)
{
int i;
char *e;
/* If one arg, save / restore, or set the mask */
if (argc == 2) {
if (strcasecmp(argv[1], "save") == 0) {
channel_mask_saved = channel_mask;
return EC_SUCCESS;
} else if (strcasecmp(argv[1], "restore") == 0) {
channel_mask = channel_mask_saved;
return EC_SUCCESS;
} else {
/* Set the mask */
int m = strtoi(argv[1], &e, 0);
if (*e)
return EC_ERROR_PARAM1;
/* No disabling the command output channel */
channel_mask = m | CC_MASK(CC_COMMAND);
return EC_SUCCESS;
}
}
/* Print the list of channels */
ccputs(" # Mask E Channel\n");
for (i = 0; i < CC_CHANNEL_COUNT; i++) {
ccprintf("%2d %08x %c %s\n",
i, CC_MASK(i),
(channel_mask & CC_MASK(i)) ? '*' : ' ',
channel_names[i]);
cflush();
}
return EC_SUCCESS;
};
DECLARE_CONSOLE_COMMAND(chan, command_ch,
"[ save | restore | <mask> ]",
"Save, restore, get or set console channel mask",
NULL);
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