bootm: Add board specific OS preboot hook

Add board-specific hook which is executed before the code hands over
control to the OS. This lets the board perform some last-minute clean
ups.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

diff --git a/common/bootm_os.c b/common/bootm_os.c
index f4bd905..f302135 100644 (file)
--- a/common/bootm_os.c
+++ b/common/bootm_os.c
@@ -505,10 +505,17 @@ __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' */