Added a arch_preboot_os() function that cpu specific code can implement to allow for various modifications to the state of the machine right before we boot. This can be useful to setup register state to a specific configuration.

Signed-off-by: Kumar Gala galak@kernel.crashing.org --- * Just renamed arch_preboot to arch_preboot_os

common/cmd_bootm.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index 86c8122..365ceeb 100644 --- a/common/cmd_bootm.c +++ b/common/cmd_bootm.c @@ -166,6 +166,13 @@ void __arch_lmb_reserve(struct lmb *lmb) } void arch_lmb_reserve(struct lmb *lmb) __attribute__((weak, alias("__arch_lmb_reserve")));

+/* Allow for arch specific config before we boot */ +void __arch_preboot_os(void) +{ + /* please define platform specific arch_preboot_os() */ +} +void arch_preboot_os(void) __attribute__((weak, alias("__arch_preboot_os"))); + #if defined(__ARM__) #define IH_INITRD_ARCH IH_ARCH_ARM #elif defined(__avr32__) @@ -543,6 +550,7 @@ int do_bootm_subcommand (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) break; case BOOTM_STATE_OS_GO: disable_interrupts(); + arch_preboot_os(); boot_fn(BOOTM_STATE_OS_GO, argc, argv, &images); break; } @@ -673,6 +681,8 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) return 1; }

+ arch_preboot_os(); + boot_fn(0, argc, argv, &images);

show_boot_progress (-9);