Recent linux kernels do not use that special environment variables anymore. Add an option to disable compilation of that code but keep it for compatibilty with older kernels.
Signed-off-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com --- README | 6 ++++++ arch/mips/lib/bootm.c | 9 ++++++++- 2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/README b/README index 33bda8c..1623616 100644 --- a/README +++ b/README @@ -522,6 +522,12 @@ The following options need to be configured: expect it to be in bytes, others in MB. Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes.
+ CONFIG_DISABLE_ENV_INIT [relevant for MIPS only] + + Disable initialization of traditional environment variables + passed to Linux. Modern kernels only use variables from command + line. + CONFIG_OF_LIBFDT
New kernel versions are expecting firmware settings to be diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c index 304ee53..e13e0d5 100644 --- a/arch/mips/lib/bootm.c +++ b/arch/mips/lib/bootm.c @@ -33,6 +33,12 @@ DECLARE_GLOBAL_DATA_PTR; #define LINUX_MAX_ENVS 256 #define LINUX_MAX_ARGS 256
+#if defined(CONFIG_DISABLE_ENV_INIT) +#define need_linux_env 0 +#else +#define need_linux_env 1 +#endif + static int linux_argc; static char **linux_argv; static char *linux_argp; @@ -201,7 +207,8 @@ static void boot_prep_linux_legacy(bootm_headers_t *images)
static void boot_prep_linux(bootm_headers_t *images) { - boot_prep_linux_legacy(images); + if (need_linux_env) + boot_prep_linux_legacy(images); }
static void boot_jump_linux(bootm_headers_t *images)