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authorAllen Martin <amartin@nvidia.com>2012-12-19 13:02:36 -0800
committerAllen Martin <amartin@nvidia.com>2012-12-19 13:02:36 -0800
commita098cf41fdb2a6607c675f7fe4f3164617c9367e (patch)
treeb37acb36f65909e6f74cc537d73efd883a1485a6 /common/cmd_io.c
parentb8a7c467960ffb4d5a5e1eef5f7783fb6f594542 (diff)
parent095728803eedfce850a2f85828f79500cb09979e (diff)
Merge remote-tracking branch 'u-boot/master' into u-boot-arm-merged
Conflicts: README arch/arm/cpu/armv7/exynos/clock.c board/samsung/universal_c210/universal.c drivers/misc/Makefile drivers/power/power_fsl.c include/configs/mx35pdk.h include/configs/mx53loco.h include/configs/seaboard.h
Diffstat (limited to 'common/cmd_io.c')
-rw-r--r--common/cmd_io.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/common/cmd_io.c b/common/cmd_io.c
new file mode 100644
index 0000000000..6450cb576b
--- /dev/null
+++ b/common/cmd_io.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ *
+ * 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
+ */
+
+/*
+ * IO space access commands.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+
+/*
+ * IO Display
+ *
+ * Syntax:
+ * iod{.b, .w, .l} {addr}
+ */
+int do_io_iod(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+ ulong addr;
+ int size;
+
+ if (argc != 2)
+ return CMD_RET_USAGE;
+
+ size = cmd_get_data_size(argv[0], 4);
+ if (size < 0)
+ return 1;
+
+ addr = simple_strtoul(argv[1], NULL, 16);
+
+ printf("%04x: ", (u16) addr);
+
+ if (size == 4)
+ printf("%08x\n", inl(addr));
+ else if (size == 2)
+ printf("%04x\n", inw(addr));
+ else
+ printf("%02x\n", inb(addr));
+
+ return 0;
+}
+
+int do_io_iow(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+ ulong addr, size, val;
+
+ if (argc != 3)
+ return CMD_RET_USAGE;
+
+ size = cmd_get_data_size(argv[0], 4);
+ if (size < 0)
+ return 1;
+
+ addr = simple_strtoul(argv[1], NULL, 16);
+ val = simple_strtoul(argv[2], NULL, 16);
+
+ if (size == 4)
+ outl((u32) val, addr);
+ else if (size == 2)
+ outw((u16) val, addr);
+ else
+ outb((u8) val, addr);
+
+ return 0;
+}
+
+/**************************************************/
+U_BOOT_CMD(iod, 2, 0, do_io_iod,
+ "IO space display", "[.b, .w, .l] address [# of objects]");
+
+U_BOOT_CMD(iow, 3, 0, do_io_iow,
+ "IO space modify (auto-incrementing address)",
+ "[.b, .w, .l] address");