From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/cmd/io.c | 124 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 124 insertions(+)
create mode 100644 roms/u-boot/cmd/io.c
(limited to 'roms/u-boot/cmd/io.c')
diff --git a/roms/u-boot/cmd/io.c b/roms/u-boot/cmd/io.c
new file mode 100644
index 000000000..c7e964153
--- /dev/null
+++ b/roms/u-boot/cmd/io.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ */
+
+/*
+ * IO space access commands.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+
+/* Display values from last command */
+static ulong last_addr, last_size;
+static ulong last_length = 0x40;
+static ulong base_address;
+
+#define DISP_LINE_LEN 16
+
+/*
+ * IO Display
+ *
+ * Syntax:
+ * iod{.b, .w, .l} {addr}
+ */
+int do_io_iod(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ ulong addr, length, bytes;
+ u8 buf[DISP_LINE_LEN];
+ int size, todo;
+
+ /*
+ * We use the last specified parameters, unless new ones are
+ * entered.
+ */
+ addr = last_addr;
+ size = last_size;
+ length = last_length;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ if ((flag & CMD_FLAG_REPEAT) == 0) {
+ /*
+ * New command specified. Check for a size specification.
+ * Defaults to long if no or incorrect specification.
+ */
+ size = cmd_get_data_size(argv[0], 4);
+ if (size < 0)
+ return 1;
+
+ /* Address is specified since argc > 1 */
+ addr = simple_strtoul(argv[1], NULL, 16);
+ addr += base_address;
+
+ /*
+ * If another parameter, it is the length to display.
+ * Length is the number of objects, not number of bytes.
+ */
+ if (argc > 2)
+ length = simple_strtoul(argv[2], NULL, 16);
+ }
+
+ bytes = size * length;
+
+ /* Print the lines */
+ for (; bytes > 0; addr += todo) {
+ u8 *ptr = buf;
+ int i;
+
+ todo = min(bytes, (ulong)DISP_LINE_LEN);
+ for (i = 0; i < todo; i += size, ptr += size) {
+ if (size == 4)
+ *(u32 *)ptr = inl(addr + i);
+ else if (size == 2)
+ *(u16 *)ptr = inw(addr + i);
+ else
+ *ptr = inb(addr + i);
+ }
+ print_buffer(addr, buf, size, todo / size,
+ DISP_LINE_LEN / size);
+ bytes -= todo;
+ }
+
+ last_addr = addr;
+ last_length = length;
+ last_size = size;
+
+ return 0;
+}
+
+int do_io_iow(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ ulong addr, val;
+ int size;
+
+ 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, 3, 1, do_io_iod,
+ "IO space display", "[.b, .w, .l] address");
+
+U_BOOT_CMD(iow, 3, 0, do_io_iow,
+ "IO space modify",
+ "[.b, .w, .l] address value");
--
cgit