[PATCH v2 4/5] board: sl28: support dynamic prompts

[Michael Walle]

Depending on the boot source, set different CLI prompts. This will help
the user to figure out in which mode the bootloader was started. There
are two special modes: failsafe and SDHC boot.

Signed-off-by: Michael Walle <michael at walle.cc>
---
 board/kontron/sl28/sl28.c      | 20 ++++++++++++++++++++
 configs/kontron_sl28_defconfig |  1 +
 2 files changed, 21 insertions(+)

diff --git a/board/kontron/sl28/sl28.c b/board/kontron/sl28/sl28.c
index 54719cc01c..0576b3eae4 100644
--- a/board/kontron/sl28/sl28.c
+++ b/board/kontron/sl28/sl28.c
@@ -126,8 +126,28 @@ static void stop_recovery_watchdog(void)
 		wdt_stop(dev);
 }
 
+static void sl28_set_prompt(void)
+{
+	enum boot_source src = sl28_boot_source();
+
+	switch (src) {
+	case BOOT_SOURCE_SPI:
+		env_set("PS1", "[FAILSAFE] => ");
+		break;
+	case BOOT_SOURCE_SDHC:
+		env_set("PS1", "[SDHC] => ");
+		break;
+	default:
+		env_set("PS1", NULL);
+		break;
+	}
+}
+
 int fsl_board_late_init(void)
 {
+	if (IS_ENABLED(CONFIG_CMDLINE_PS_SUPPORT))
+		sl28_set_prompt();
+
 	/*
 	 * Usually, the after a board reset, the watchdog is enabled by
 	 * default. This is to supervise the bootloader boot-up. Therefore,
diff --git a/configs/kontron_sl28_defconfig b/configs/kontron_sl28_defconfig
index fda88f0eae..8e46a71ea4 100644
--- a/configs/kontron_sl28_defconfig
+++ b/configs/kontron_sl28_defconfig
@@ -54,6 +54,7 @@ CONFIG_SPL_SPI_LOAD=y
 CONFIG_SYS_CBSIZE=256
 CONFIG_SYS_PBSIZE=276
 CONFIG_SYS_BOOTM_LEN=0x800000
+CONFIG_CMDLINE_PS_SUPPORT=y
 CONFIG_CMD_ASKENV=y
 CONFIG_CMD_GREPENV=y
 CONFIG_CMD_NVEDIT_EFI=y
-- 
2.30.2