From 3dfad40a0459f63099e177dc15a1df39d048f860 Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Thu, 27 Aug 2009 08:23:55 -0500 Subject: Add ability for arch code to make changes before we boot 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 --- common/cmd_bootm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'common') diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index 86c81220d2c..365ceebdf06 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); -- cgit v1.2.3