boot using boot.scr

• enable vga by default
• load boot.scr from sd-card or eMMC, searching either in / or in /boot for it
• add .gitlab-ci.yml to build flash.bin

board/boundary/nitrogen8m_som/nitrogen8m_som.c

@@ -330,19 +330,32 @@ static void set_env_vars(void)
 	env_set("soc", "imx8mq");
 	env_set("imx_cpu", get_imx_type((get_cpu_rev() & 0xFF000) >> 12));
 	env_set("uboot_defconfig", CONFIG_DEFCONFIG);
+	env_set("stdout", "serial,vga");
+	env_set("stderr", "serial,vga");
 
 	// MNT Reform 2
 	env_set("fdt_addr", "0x50000000");
+	env_set("ramdiskaddr", "0x51000000");
 #ifdef MNTREFORM_BOOT_RISCOS
 	env_set("bootcmd", "usb start; usb reset; ext4load mmc 1 ${loadaddr} /RISCOSIMX8M; go ${loadaddr} 32");
-#elif MNTREFORM_BOOT_EMMC
-	// boot rescue system from eMMC
-	env_set("bootargs", "noinitrd root=/dev/mmcblk0p1 rootwait rw console=ttymxc0,115200 console=tty1 cma=512M pci=nomsi no_console_suspend init=/sbin/reform-init");
-	env_set("bootcmd", "ext4load mmc 0 ${loadaddr} /Image; ext4load mmc 0 ${fdt_addr} /imx8mq-mnt-reform2.dtb; booti ${loadaddr} - ${fdt_addr}");
 #else
-	// boot normal system from SD card and start /sbin/reform-init
-	env_set("bootargs", "noinitrd root=/dev/mmcblk1p1 rootwait rw console=ttymxc0,115200 console=tty1 cma=512M pci=nomsi no_console_suspend init=/sbin/reform-init");
-	env_set("bootcmd", "ext4load mmc 1 ${loadaddr} /Image; ext4load mmc 1 ${fdt_addr} /imx8mq-mnt-reform2.dtb; booti ${loadaddr} - ${fdt_addr}");
+	// boot normal system using boot.scr
+	env_set("kernel_addr_r", "0x40480000");
+	env_set("fdt_addr_r", "0x50000000");
+	env_set("ramdisk_addr_r", "0x51000000");
+	env_set("devtype", "mmc");
+	env_set("bootpart", "1");
+	env_set("script", "boot.scr");
+	env_set("bootcmd",
+			"for devnum in 1 0; do " // first try SD card then eMMC
+				"${devtype} dev ${devnum}; "
+				"if ${devtype} rescan; then "
+					"for pathprefix in /boot/ /; do " // search for boot.scr in /boot and in /
+						"load ${devtype} ${devnum}:${bootpart} ${loadaddr} ${pathprefix}${script} && source; "
+					"done; "
+				"fi; "
+			"done"
+		);
 #endif
 
 	env_set("bootdelay", "1");