MIPS: Fix and enhance built-in kernel command line
Currently, MIPS kernels silently overwrite kernel command-line parameters
hardcoded in CONFIG_CMDLINE by the ones received from firmware. Therefore,
using firmware remains the only reliable method to transfer the
command-line parameters, which is not always desirable or convenient, and
the CONFIG_CMDLINE option is thereby effectively rendered useless.
This patch fixes the problem described above and introduces a more flexible
scheme of handling the kernel command line, in a manner identical to what is
currently used for x86. The default behavior, i.e. when CONFIG_CMDLINE_BOOL
is not defined, retains the existing semantics, and firmware command-line
arguments override the hardcoded ones.
[Ralf: I fixed up all the defconfig files so the stay unaffected by this
change.]
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/689/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/configs/pnx8335-stb225_defconfig b/arch/mips/configs/pnx8335-stb225_defconfig
index 77a75f0..848344d5 100644
--- a/arch/mips/configs/pnx8335-stb225_defconfig
+++ b/arch/mips/configs/pnx8335-stb225_defconfig
@@ -1033,7 +1033,7 @@
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
# CONFIG_KERNEL_TESTS is not set
-CONFIG_CMDLINE=""
+# CONFIG_CMDLINE_BOOL is not set
#
# Security options