[U-Boot] [PATCH V2 3/4] common: introduce board_preboot_os hook

[Nikita Kiryanov]

Introduce board specific function board_preboot_os() to allow for board
specific config before we boot.

Signed-off-by: Nikita Kiryanov <nikita at compulab.co.il>
Cc: Igor Grinberg <grinberg at compulab.co.il>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Tom Rini <trini at ti.com>
Cc: Jeroen Hofstee <jeroen at myspectrum.nl>
Cc: Otavio Salvador <otavio at ossystems.com.br>
---
Changes in V2:
	- Added board_preboot_os to bootm.h
	- Split cm_fx6 stuff into a separate patch

 common/bootm_os.c | 7 +++++++
 include/bootm.h   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/common/bootm_os.c b/common/bootm_os.c
index 5be4467..95cd657 100644
--- a/common/bootm_os.c
+++ b/common/bootm_os.c
@@ -442,10 +442,17 @@ __weak void arch_preboot_os(void)
 	/* please define platform specific arch_preboot_os() */
 }
 
+/* Allow for board specific config before we boot */
+__weak void board_preboot_os(void)
+{
+	/* please define board specific board_preboot_os() */
+}
+
 int boot_selected_os(int argc, char * const argv[], int state,
 		     bootm_headers_t *images, boot_os_fn *boot_fn)
 {
 	arch_preboot_os();
+	board_preboot_os();
 	boot_fn(state, argc, argv, images);
 
 	/* Stand-alone may return when 'autostart' is 'no' */
diff --git a/include/bootm.h b/include/bootm.h
index b3d1a62..7a57264 100644
--- a/include/bootm.h
+++ b/include/bootm.h
@@ -55,5 +55,6 @@ int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 		    int states, bootm_headers_t *images, int boot_progress);
 
 void arch_preboot_os(void);
+void board_preboot_os(void);
 
 #endif
-- 
1.9.1