Move preparation of Linux kernel environment in a separate function and mark it as legacy. Add a Kconfig option to make that legacy mode configurable.
Signed-off-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com ---
arch/mips/Kconfig | 9 +++++++++ arch/mips/lib/bootm.c | 14 +++++++++++++- 2 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index a5d5a33..9b3ecea 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -127,6 +127,15 @@ config MIPS_BOOT_CMDLINE_LEGACY compatible list. The argument count (argc) is stored in register $a0. The address of the argument list (argv) is stored in register $a1.
+config MIPS_BOOT_ENV_LEGACY + bool "Hand over legacy environment to Linux kernel" + default y + help + Enable this option if you want U-Boot to hand over the Yamon-style + environment to the kernel. Information like memory size, initrd + address and size will be prepared as zero-terminated key/value list. + The address of the enviroment is stored in register $a2. + endmenu
config SUPPORTS_BIG_ENDIAN diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c index a028a47..fa579b3 100644 --- a/arch/mips/lib/bootm.c +++ b/arch/mips/lib/bootm.c @@ -26,6 +26,12 @@ DECLARE_GLOBAL_DATA_PTR; #define mips_boot_cmdline_legacy 0 #endif
+#if defined(CONFIG_MIPS_BOOT_ENV_LEGACY) +#define mips_boot_env_legacy 1 +#else +#define mips_boot_env_legacy 0 +#endif + static int linux_argc; static char **linux_argv; static char *linux_argp; @@ -177,7 +183,7 @@ static void linux_env_set(const char *env_name, const char *env_val) } }
-static void boot_prep_linux(bootm_headers_t *images) +static void linux_env_legacy(bootm_headers_t *images) { char env_buf[12]; const char *cp; @@ -225,6 +231,12 @@ static void boot_prep_linux(bootm_headers_t *images) } }
+static void boot_prep_linux(bootm_headers_t *images) +{ + if (mips_boot_env_legacy) + linux_env_legacy(images); +} + static void boot_jump_linux(bootm_headers_t *images) { typedef void __noreturn (*kernel_entry_t)(int, ulong, ulong, ulong);