openwrt_archive/target/linux/generic/patches-4.1/995-mangle_bootargs.patch
Jonas Gorski e4528126de generic: add linux 4.1 support
Boot tested: http://pastebin.com/L6aAb9xj

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
[jogo:
  update to 4.1 final
  add patches added since submission
  delete patches applied in later rcs
  restore commit messages in 220-gc-sections and 304-mips_disable_fpu
  fix 050-backport_netfilter_rtcache to match new API
  update inlined dma ops with upstream changes
  add missing config symbols
  enabled CONFIG_MULTIUSER
  update kmod defintions for 4.1
]
Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 46112
2015-06-22 12:27:59 +00:00

59 lines
1.5 KiB
Diff

--- a/init/main.c
+++ b/init/main.c
@@ -352,6 +352,29 @@ static inline void setup_nr_cpu_ids(void
static inline void smp_prepare_cpus(unsigned int maxcpus) { }
#endif
+#ifdef CONFIG_MANGLE_BOOTARGS
+static void __init mangle_bootargs(char *command_line)
+{
+ char *rootdev;
+ char *rootfs;
+
+ rootdev = strstr(command_line, "root=/dev/mtdblock");
+
+ if (rootdev)
+ strncpy(rootdev, "mangled_rootblock=", 18);
+
+ rootfs = strstr(command_line, "rootfstype");
+
+ if (rootfs)
+ strncpy(rootfs, "mangled_fs", 10);
+
+}
+#else
+static void __init mangle_bootargs(char *command_line)
+{
+}
+#endif
+
/*
* We need to store the untouched command line for future reference.
* We also need to store the touched command line since the parameter
@@ -522,6 +545,7 @@ asmlinkage __visible void __init start_k
pr_notice("%s", linux_banner);
setup_arch(&command_line);
mm_init_cpumask(&init_mm);
+ mangle_bootargs(command_line);
setup_command_line(command_line);
setup_nr_cpu_ids();
setup_per_cpu_areas();
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1607,6 +1607,15 @@ config EMBEDDED
an embedded system so certain expert options are available
for configuration.
+config MANGLE_BOOTARGS
+ bool "Rename offending bootargs"
+ depends on EXPERT
+ help
+ Sometimes the bootloader passed bogus root= and rootfstype=
+ parameters to the kernel, and while you want to ignore them,
+ you need to know the values f.e. to support dual firmware
+ layouts on the flash.
+
config HAVE_PERF_EVENTS
bool
help