From 4b4b13d5fec8a82ed2780c487e49cfc4321a8c14 Mon Sep 17 00:00:00 2001 From: Simon Kagstrom Date: Tue, 28 Oct 2014 12:19:00 +0100 Subject: powerpc/boot: Parse chosen/cmdline-timeout parameter On some platforms a 5 second timeout during boot might be quite long, so make it configurable. Run the loop at least once to let the user stop the boot by holding a key pressed. If the timeout is set to 0, don't wait for input, which can be used as a workaround if the boot hangs on random data coming in on the serial port. Signed-off-by: Simon Kagstrom [mpe: Changelog wording & whitespace] Signed-off-by: Michael Ellerman --- arch/powerpc/boot/main.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'arch/powerpc/boot/main.c') diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c index d367a0aece2a..d80161b633f4 100644 --- a/arch/powerpc/boot/main.c +++ b/arch/powerpc/boot/main.c @@ -144,13 +144,24 @@ static char cmdline[BOOT_COMMAND_LINE_SIZE] static void prep_cmdline(void *chosen) { + unsigned int getline_timeout = 5000; + int v; + int n; + + /* Wait-for-input time */ + n = getprop(chosen, "linux,cmdline-timeout", &v, sizeof(v)); + if (n == sizeof(v)) + getline_timeout = v; + if (cmdline[0] == '\0') getprop(chosen, "bootargs", cmdline, BOOT_COMMAND_LINE_SIZE-1); printf("\n\rLinux/PowerPC load: %s", cmdline); + /* If possible, edit the command line */ - if (console_ops.edit_cmdline) - console_ops.edit_cmdline(cmdline, BOOT_COMMAND_LINE_SIZE); + if (console_ops.edit_cmdline && getline_timeout) + console_ops.edit_cmdline(cmdline, BOOT_COMMAND_LINE_SIZE, getline_timeout); + printf("\n\r"); /* Put the command line back into the devtree for the kernel */ -- cgit v1.2.2