imx: spl: add spl_board_boot_device for i.MX8MM

Differnet board has different controller used, it is
hard to use one layout for them all.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/arch/arm/mach-imx/spl.c b/arch/arm/mach-imx/spl.c
index f33b9f0..30fa6ae 100644 (file)
--- a/arch/arm/mach-imx/spl.c
+++ b/arch/arm/mach-imx/spl.c
@@ -18,6 +18,11 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+__weak int spl_board_boot_device(enum boot_device boot_dev_spl)
+{
+       return 0;
+}
+
 #if defined(CONFIG_MX6)
 /* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */
 u32 spl_boot_device(void)
@@ -132,6 +137,9 @@ u32 spl_boot_device(void)
 
        enum boot_device boot_device_spl = get_boot_device();
 
+       if (IS_ENABLED(CONFIG_IMX8MM))
+               return spl_board_boot_device(boot_device_spl);
+
        switch (boot_device_spl) {
 #if defined(CONFIG_MX7)
        case SD1_BOOT: