From f3b267b3a229e328bf765ffbb8cb2af382bbfa63 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Wed, 27 Jan 2016 04:47:55 +0100
Subject: [PATCH] hush: Add rudimentary support for PS1 and PS2
Add trivial support for changing the U-Boot command prompt string
by setting PS1 and PS2 environment variables. Only static variables
are supported.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
README | 8 ++++++++
common/cli_hush.c | 10 ++++++++++
2 files changed, 18 insertions(+)
diff --git a/README b/README
index 83d2874851c..2492364b6d5 100644
--- a/README
+++ b/README
@@ -2905,6 +2905,14 @@ CBFS (Coreboot Filesystem) support
Enable editing and History functions for interactive
command line input operations
+- Command Line PS1/PS2 support:
+ CONFIG_CMDLINE_PS_SUPPORT
+
+ Enable support for changing the command prompt string
+ at run-time. Only static string is supported so far.
+ The string is obtained from environment variables PS1
+ and PS2.
+
- Default Environment:
CONFIG_EXTRA_ENV_SETTINGS
diff --git a/common/cli_hush.c b/common/cli_hush.c
index cbaf22e9129..00861e2d9e4 100644
--- a/common/cli_hush.c
+++ b/common/cli_hush.c
@@ -978,12 +978,22 @@ static inline void setup_prompt_string(int promptmode, char **prompt_str)
static int uboot_cli_readline(struct in_str *i)
{
char *prompt;
+ char __maybe_unused *ps_prompt = NULL;
if (i->promptmode == 1)
prompt = CONFIG_SYS_PROMPT;
else
prompt = CONFIG_SYS_PROMPT_HUSH_PS2;
+#ifdef CONFIG_CMDLINE_PS_SUPPORT
+ if (i->promptmode == 1)
+ ps_prompt = getenv("PS1");
+ else
+ ps_prompt = getenv("PS2");
+ if (ps_prompt)
+ prompt = ps_prompt;
+#endif
+
return cli_readline(prompt);
}
#endif
--
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