added boot script files to repository

1 files changed, 193 insertions, 0 deletions

diff --git a/u-boot/common/cmd_itest.c b/u-boot/common/cmd_itest.c
new file mode 100644
index 0000000..2a238a4
--- /dev/null
+++ b/u-boot/common/cmd_itest.c
@@ -0,0 +1,193 @@
+/*
+ * (C) Copyright 2003
+ * Tait Electronics Limited, Christchurch, New Zealand
+ *
+ * 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
+ */
+
+/*
+ * This file provides a shell like 'test' function to return
+ * true/false from an integer or string compare of two memory
+ * locations or a location and a scalar/literal.
+ * A few parts were lifted from bash 'test' command
+ */
+
+#include <common.h>
+#include <config.h>
+#include <command.h>
+
+#define EQ	0
+#define NE	1
+#define LT	2
+#define GT	3
+#define LE	4
+#define GE	5
+
+struct op_tbl_s {
+	char	*op;		/* operator string */
+	int	opcode;		/* internal representation of opcode */
+};
+
+typedef struct op_tbl_s op_tbl_t;
+
+static const op_tbl_t op_table [] = {
+	{ "-lt", LT },
+	{ "<"  , LT },
+	{ "-gt", GT },
+	{ ">"  , GT },
+	{ "-eq", EQ },
+	{ "==" , EQ },
+	{ "-ne", NE },
+	{ "!=" , NE },
+	{ "<>" , NE },
+	{ "-ge", GE },
+	{ ">=" , GE },
+	{ "-le", LE },
+	{ "<=" , LE },
+};
+
+static long evalexp(char *s, int w)
+{
+	long l = 0;
+	long *p;
+
+	/* if the parameter starts with a * then assume is a pointer to the value we want */
+	if (s[0] == '*') {
+		p = (long *)simple_strtoul(&s[1], NULL, 16);
+		switch (w) {
+		case 1: return((long)(*(unsigned char *)p));
+		case 2: return((long)(*(unsigned short *)p));
+		case 4: return(*p);
+		}
+	} else {
+		l = simple_strtoul(s, NULL, 16);
+	}
+
+	return (l & ((1 << (w * 8)) - 1));
+}
+
+static char * evalstr(char *s)
+{
+	/* if the parameter starts with a * then assume a string pointer else its a literal */
+	if (s[0] == '*') {
+		return (char *)simple_strtoul(&s[1], NULL, 16);
+	} else {
+		return s;
+	}
+}
+
+static int stringcomp(char *s, char *t, int op)
+{
+	int p;
+	char *l, *r;
+
+	l = evalstr(s);
+	r = evalstr(t);
+
+	p = strcmp(l, r);
+	switch (op) {
+	case EQ: return (p == 0);
+	case NE: return (p != 0);
+	case LT: return (p < 0);
+	case GT: return (p > 0);
+	case LE: return (p <= 0);
+	case GE: return (p >= 0);
+	}
+	return (0);
+}
+
+static int arithcomp (char *s, char *t, int op, int w)
+{
+	long l, r;
+
+	l = evalexp (s, w);
+	r = evalexp (t, w);
+
+	switch (op) {
+	case EQ: return (l == r);
+	case NE: return (l != r);
+	case LT: return (l < r);
+	case GT: return (l > r);
+	case LE: return (l <= r);
+	case GE: return (l >= r);
+	}
+	return (0);
+}
+
+int binary_test (char *op, char *arg1, char *arg2, int w)
+{
+	int len, i;
+	const op_tbl_t *optp;
+
+	len = strlen(op);
+
+	for (optp = (op_tbl_t *)&op_table, i = 0;
+	     i < ARRAY_SIZE(op_table);
+	     optp++, i++) {
+
+		if ((strncmp (op, optp->op, len) == 0) && (len == strlen (optp->op))) {
+			if (w == 0) {
+				return (stringcomp(arg1, arg2, optp->opcode));
+			} else {
+				return (arithcomp (arg1, arg2, optp->opcode, w));
+			}
+		}
+	}
+
+	printf("Unknown operator '%s'\n", op);
+	return 0;	/* op code not found */
+}
+
+/* command line interface to the shell test */
+int do_itest ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] )
+{
+	int	value, w;
+
+	/* Validate arguments */
+	if ((argc != 4))
+		return cmd_usage(cmdtp);
+
+	/* Check for a data width specification.
+	 * Defaults to long (4) if no specification.
+	 * Uses -2 as 'width' for .s (string) so as not to upset existing code
+	 */
+	switch (w = cmd_get_data_size(argv[0], 4)) {
+	case 1:
+	case 2:
+	case 4:
+		value = binary_test (argv[2], argv[1], argv[3], w);
+		break;
+	case -2:
+		value = binary_test (argv[2], argv[1], argv[3], 0);
+		break;
+	case -1:
+	default:
+		puts("Invalid data width specifier\n");
+		value = 0;
+		break;
+	}
+
+	return !value;
+}
+
+U_BOOT_CMD(
+	itest, 4, 0, do_itest,
+	"return true/false on integer compare",
+	"[.b, .w, .l, .s] [*]value1 <op> [*]value2"
+);