Function dump_console

util/cbmem/cbmem.c:735–842

dump the cbmem console */

/* dump the cbmem console */
static void dump_console(enum console_print_type type, int max_loglevel, int print_unknown_logs)
{
	const struct cbmem_console *console_p;
	char *console_c;
	size_t size, cursor, previous;

	if (!cbmem_drv_get_cbmem_entry(CBMEM_ID_CONSOLE, (uint8_t **)&console_p, NULL, NULL))
		die("CBMEM console not found.\n");

	cursor = console_p->cursor & CBMC_CURSOR_MASK;
	if (!(console_p->cursor & CBMC_OVERFLOW) && cursor < console_p->size)
		size = cursor;
	else
		size = console_p->size;

	console_c = malloc(size + 1);
	if (!console_c) {
		free((uint8_t *)console_p);
		die("Not enough memory for console.\n");
	}
	console_c[size] = '\0';

	if (console_p->cursor & CBMC_OVERFLOW) {
		if (cursor >= size) {
			printf("cbmem: ERROR: CBMEM console struct is illegal, "
			       "output may be corrupt or out of order!\n\n");
			cursor = 0;
		}
		memcpy(console_c, console_p->body + cursor, size - cursor);
		memcpy(console_c + size - cursor, console_p->body, cursor);
	} else {
		memcpy(console_c, console_p->body, size);
	}

	/* Slight memory corruption may occur between reboots and give us a few
	   unprintable characters like '\0'. Replace them with '?' on output. */
	for (cursor = 0; cursor < size; cursor++)
		if (!isprint(console_c[cursor]) && !isspace(console_c[cursor])
		    && !BIOS_LOG_IS_MARKER(console_c[cursor]))
			console_c[cursor] = '?';

	/* We detect the reboot cutoff by looking for a bootblock, romstage or
	   ramstage banner, in that order (to account for platforms without
	   CONFIG_BOOTBLOCK_CONSOLE and/or CONFIG_EARLY_CONSOLE). Once we find
	   a banner, store the last two matches for that stage and stop. */
	cursor = previous = 0;
	if (type != CONSOLE_PRINT_FULL) {
#define BANNER_REGEX(stage) \
		"\n\n.?coreboot-[^\n]* " stage " starting.*\\.\\.\\.\n"
#define OVERFLOW_REGEX(stage) "\n.?\\*\\*\\* Pre-CBMEM " stage " console overflow"
		const char *regex[] = { BANNER_REGEX("verstage-before-bootblock"),
					BANNER_REGEX("bootblock"),
					BANNER_REGEX("verstage"),
					OVERFLOW_REGEX("romstage"),
					BANNER_REGEX("romstage"),
					OVERFLOW_REGEX("ramstage"),
					BANNER_REGEX("ramstage") };