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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/cmd/terminal.c
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/cmd/terminal.c')
-rw-r--r--roms/u-boot/cmd/terminal.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/roms/u-boot/cmd/terminal.c b/roms/u-boot/cmd/terminal.c
new file mode 100644
index 000000000..9e32a4191
--- /dev/null
+++ b/roms/u-boot/cmd/terminal.c
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2007 OpenMoko, Inc.
+ * Written by Harald Welte <laforge@openmoko.org>
+ */
+
+/*
+ * Boot support
+ */
+#include <common.h>
+#include <command.h>
+#include <stdio_dev.h>
+#include <serial.h>
+
+int do_terminal(struct cmd_tbl *cmd, int flag, int argc, char *const argv[])
+{
+ int last_tilde = 0;
+ struct stdio_dev *dev = NULL;
+
+ if (argc < 1)
+ return -1;
+
+ /* Scan for selected output/input device */
+ dev = stdio_get_by_name(argv[1]);
+ if (!dev)
+ return -1;
+
+ if (IS_ENABLED(CONFIG_SERIAL))
+ serial_reinit_all();
+
+ printf("Entering terminal mode for port %s\n", dev->name);
+ puts("Use '~.' to leave the terminal and get back to u-boot\n");
+
+ while (1) {
+ int c;
+
+ /* read from console and display on serial port */
+ if (stdio_devices[0]->tstc(stdio_devices[0])) {
+ c = stdio_devices[0]->getc(stdio_devices[0]);
+ if (last_tilde == 1) {
+ if (c == '.') {
+ putc(c);
+ putc('\n');
+ break;
+ } else {
+ last_tilde = 0;
+ /* write the delayed tilde */
+ dev->putc(dev, '~');
+ /* fall-through to print current
+ * character */
+ }
+ }
+ if (c == '~') {
+ last_tilde = 1;
+ puts("[u-boot]");
+ putc(c);
+ }
+ dev->putc(dev, c);
+ }
+
+ /* read from serial port and display on console */
+ if (dev->tstc(dev)) {
+ c = dev->getc(dev);
+ putc(c);
+ }
+ }
+ return 0;
+}
+
+
+/***************************************************/
+
+U_BOOT_CMD(
+ terminal, 3, 1, do_terminal,
+ "start terminal emulator",
+ ""
+);