ccmp1: define 'is_boot_from_usb' implementation

This macro guarantees that the 'bootcmd_mfg' will be run instead of
'bootcmd' when the device boots via USB.

https://onedigi.atlassian.net/browse/DUB-1039

Signed-off-by: Gonzalo Ruiz <[email protected]>

Author: gruizdigi

arch/arm/mach-stm32mp/include/mach/stm32.h

@@ -169,5 +169,9 @@ enum forced_boot_mode {
 #define BSEC_OTP_BOARD	60
 #endif
 
+bool is_usb_boot(void);
+#define	is_boot_from_usb  is_usb_boot
+#define disconnect_from_pc()
+
 #endif /* __ASSEMBLY__ */
 #endif /* _MACH_STM32_H_ */

board/digi/ccmp1/ccmp1.c

@@ -228,3 +228,16 @@ void print_bootinfo(void)
 			break;
 	}
 }
+
+bool is_usb_boot(void)
+{
+	u32 bootmode = get_bootmode();
+
+	switch (bootmode & TAMP_BOOT_DEVICE_MASK) {
+		case BOOT_SERIAL_USB:
+		case BOOT_SERIAL_USB_OTG:
+			return true;
+		default:
+			return false;
+	}
+}

board/digi/ccmp1/ccmp1.h

@@ -13,5 +13,6 @@ void fdt_fixup_ccmp1(void *fdt);
 void som_default_environment(void);
 void print_som_info(void);
 void print_bootinfo(void);
+bool is_usb_boot(void);
 
 #endif  /* CCMP1_H */