rk3288: vyasa: Add falcon mode support

Add Falcon mode support in vyasa rk3288 board.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

board/amarula/vyasa-rk3288/vyasa-rk3288.c

@@ -5,3 +5,16 @@
  */
 
 #include <common.h>
+
+#ifndef CONFIG_TPL_BUILD
+#include <spl.h>
+
+int spl_start_uboot(void)
+{
+        /* break into full u-boot on 'c' */
+        if (serial_tstc() && serial_getc() == 'c')
+                return 1;
+
+        return 0;
+}
+#endif

include/configs/vyasa-rk3288.h

@@ -20,4 +20,21 @@
 #define CONFIG_SYS_MMC_ENV_DEV 1
 #undef CONFIG_CMD_USB_MASS_STORAGE
 
+#ifndef CONFIG_TPL_BUILD
+
+#define CONFIG_SPL_OS_BOOT
+
+/* Falcon Mode */
+#define CONFIG_SPL_FS_LOAD_ARGS_NAME	"args"
+#define CONFIG_SPL_FS_LOAD_KERNEL_NAME	"uImage"
+#define CONFIG_CMD_SPL
+#define CONFIG_SYS_SPL_ARGS_ADDR	0x0ffe5000
+#define CONFIG_CMD_SPL_WRITE_SIZE      (128 * SZ_1K)
+
+/* Falcon Mode - MMC support: args@1MB kernel@2MB */
+#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR  0x800   /* 1MB */
+#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS (CONFIG_CMD_SPL_WRITE_SIZE / 512)
+#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR        0x1000  /* 2MB */
+#endif
+
 #endif