bootstage: Add bootstage command

Now that there are a few features, add a bootstage command to access them.

bootstage report - prints a report
bootstage stash/unstash - stashes bootstage records in memory, reads them back

Signed-off-by: Simon Glass <sjg@chromium.org>

README

@@ -2384,6 +2384,10 @@ The following options need to be configured:
 		 29,916,167 26,005,792  bootm_start
 		 30,361,327    445,160  start_kernel
 
+		CONFIG_CMD_BOOTSTAGE
+		Add a 'bootstage' command which supports printing a report
+		and un/stashing of bootstage data.
+
 		CONFIG_BOOTSTAGE_FDT
 		Stash the bootstage information in the FDT. A root 'bootstage'
 		node is created with each bootstage id as a child. Each child

common/Makefile

@@ -69,6 +69,7 @@ COBJS-$(CONFIG_CMD_BDI) += cmd_bdinfo.o
 COBJS-$(CONFIG_CMD_BEDBUG) += bedbug.o cmd_bedbug.o
 COBJS-$(CONFIG_CMD_BMP) += cmd_bmp.o
 COBJS-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o
+COBJS-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o
 COBJS-$(CONFIG_CMD_CACHE) += cmd_cache.o
 COBJS-$(CONFIG_CMD_CONSOLE) += cmd_console.o
 COBJS-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o

common/cmd_bootstage.c

@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2012, Google Inc. All rights reserved.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#ifndef CONFIG_BOOTSTAGE_STASH
+#define CONFIG_BOOTSTAGE_STASH		-1UL
+#define CONFIG_BOOTSTAGE_STASH_SIZE	-1
+#endif
+
+static int do_bootstage_report(cmd_tbl_t *cmdtp, int flag, int argc,
+			       char * const argv[])
+{
+	bootstage_report();
+
+	return 0;
+}
+
+static int get_base_size(int argc, char * const argv[], ulong *basep,
+			 ulong *sizep)
+{
+	char *endp;
+
+	*basep = CONFIG_BOOTSTAGE_STASH;
+	*sizep = CONFIG_BOOTSTAGE_STASH_SIZE;
+	if (argc < 2)
+		return 0;
+	*basep = simple_strtoul(argv[1], &endp, 16);
+	if (*argv[1] == 0 || *endp != 0)
+		return -1;
+	if (argc == 2)
+		return 0;
+	*sizep = simple_strtoul(argv[2], &endp, 16);
+	if (*argv[2] == 0 || *endp != 0)
+		return -1;
+
+	return 0;
+}
+
+static int do_bootstage_stash(cmd_tbl_t *cmdtp, int flag, int argc,
+			      char * const argv[])
+{
+	ulong base, size;
+	int ret;
+
+	if (get_base_size(argc, argv, &base, &size))
+		return CMD_RET_USAGE;
+	if (base == -1UL) {
+		printf("No bootstage stash area defined\n");
+		return 1;
+	}
+
+	if (0 == strcmp(argv[0], "stash"))
+		ret = bootstage_stash((void *)base, size);
+	else
+		ret = bootstage_unstash((void *)base, size);
+	if (ret)
+		return 1;
+
+	return 0;
+}
+
+static cmd_tbl_t cmd_bootstage_sub[] = {
+	U_BOOT_CMD_MKENT(report, 2, 1, do_bootstage_report, "", ""),
+	U_BOOT_CMD_MKENT(stash, 4, 0, do_bootstage_stash, "", ""),
+	U_BOOT_CMD_MKENT(unstash, 4, 0, do_bootstage_stash, "", ""),
+};
+
+/*
+ * Process a bootstage sub-command
+ */
+static int do_boostage(cmd_tbl_t *cmdtp, int flag, int argc,
+		       char * const argv[])
+{
+	cmd_tbl_t *c;
+
+	/* Strip off leading 'bootstage' command argument */
+	argc--;
+	argv++;
+
+	c = find_cmd_tbl(argv[0], cmd_bootstage_sub,
+			 ARRAY_SIZE(cmd_bootstage_sub));
+
+	if (c)
+		return c->cmd(cmdtp, flag, argc, argv);
+	else
+		return CMD_RET_USAGE;
+}
+
+
+U_BOOT_CMD(bootstage, 4, 1, do_boostage,
+	"Boot stage command",
+	" - check boot progress and timing\n"
+	"report                      - Print a report\n"
+	"stash [<start> [<size>]]    - Stash data into memory\n"
+	"unstash [<start> [<size>]]  - Unstash data from memory"
+);