shell: introduce part create command

Makefile

@@ -20,6 +20,7 @@ obj-y += source/bitset.o
 obj-y += source/main.o
 obj-y += source/shell/cmd.o
 obj-y += source/shell/flash.o
+obj-y += source/shell/part.o
 
 obj-y += source/core/flash.o
 

include/shell.h

@@ -6,5 +6,7 @@ struct cmd {
 };
 
 void do_flash_cmd(const char *line);
+void do_part_cmd(const char *line);
+
 void cmd_exec(struct cmd *cmds, const char *line);
 void cmd_loop(const char *s);

source/shell/cmd.c

@@ -6,6 +6,7 @@
 
 struct cmd main_cmds[] = {
 	{ "flash", do_flash_cmd },
+	{ "part", do_part_cmd },
 	{ NULL, NULL },
 };
 

source/shell/part.c

@@ -0,0 +1,42 @@
+#include <ctype.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <errno.h>
+
+#include <flash.h>
+#include <macros.h>
+#include <shell.h>
+
+#include <fs/part.h>
+
+static void do_part_create(const char *s);
+
+static struct cmd part_cmds[] = {
+	{ "create", do_part_create },
+	{ NULL, NULL },
+};
+
+extern struct flash_dev *flash;
+
+static void do_part_create(const char *s)
+{
+	(void)s;
+
+	if (!flash) {
+		fprintf(stderr, "error: no flash device probed.\n");
+		return;
+	}
+
+	if (part_create(flash) != 0) {
+		fprintf(stderr, "error: unable to create partition table.\n");
+		return;
+	}
+}
+
+void do_part_cmd(const char *line)
+{
+	cmd_exec(part_cmds, line);
+}