diff options
| author | Victor Boivie <victor.boivie@sonyericsson.com> | 2011-05-04 17:07:55 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-12 10:13:22 +0100 |
| commit | 4394c1244249198c6b85093d46935b761b36ae05 (patch) | |
| tree | 3a0c30dc915b85ee5b2190eaa3ed2c6ad530aab0 /arch/arm/kernel | |
| parent | c1b0db56604b4ccc55a325104b14093aeedeb829 (diff) | |
| download | linux-4394c1244249198c6b85093d46935b761b36ae05.tar.bz2 | |
ARM: 6893/1: Allow for kernel command line concatenation
This patch allows the provided CONFIG_CMDLINE to be concatenated
with the one provided by the boot loader. This is useful to
merge the static values defined in CONFIG_CMDLINE with the
boot loader's (possibly) more dynamic values, such as startup
reasons and more.
Signed-off-by: Victor Boivie <victor.boivie@sonyericsson.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonyericsson.com>
Signed-off-by: Oskar Andero <oskar.andero@sonyericsson.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/setup.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 006c1e884eaf..6dce209a623b 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -672,11 +672,16 @@ __tagtable(ATAG_REVISION, parse_tag_revision); static int __init parse_tag_cmdline(const struct tag *tag) { -#ifndef CONFIG_CMDLINE_FORCE - strlcpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE); -#else +#if defined(CONFIG_CMDLINE_EXTEND) + strlcat(default_command_line, " ", COMMAND_LINE_SIZE); + strlcat(default_command_line, tag->u.cmdline.cmdline, + COMMAND_LINE_SIZE); +#elif defined(CONFIG_CMDLINE_FORCE) pr_warning("Ignoring tag cmdline (using the default kernel command line)\n"); -#endif /* CONFIG_CMDLINE_FORCE */ +#else + strlcpy(default_command_line, tag->u.cmdline.cmdline, + COMMAND_LINE_SIZE); +#endif return 0; } |