am335x_evm: Make SPL_OS also check the boot_os variable for falcon mode

We use the same variable as a3m071 in the environment to determine if we
should boot into Linux or U-Boot.  This is useful on boards like
Beaglebone Black or AM335x GP EVM where we have persistent storage for
the environment.

Signed-off-by: Tom Rini <trini@ti.com>

diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
index 554398f..ce7a8b0 100644 (file)
--- a/board/ti/am335x/board.c
+++ b/board/ti/am335x/board.c
@@ -30,6 +30,7 @@
 #include <power/tps65910.h>
 #include <environment.h>
 #include <watchdog.h>
+#include <environment.h>
 #include "board.h"
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -219,7 +220,17 @@ static struct emif_regs ddr3_evm_emif_reg_data = {
 int spl_start_uboot(void)
 {
        /* break into full u-boot on 'c' */
-       return (serial_tstc() && serial_getc() == 'c');
+       if (serial_tstc() && serial_getc() == 'c')
+               return 1;
+
+#ifdef CONFIG_SPL_ENV_SUPPORT
+       env_init();
+       env_relocate_spec();
+       if (getenv_yesno("boot_os") != 1)
+               return 1;
+#endif
+
+       return 0;
 }
 #endif