librem5: Enable distro_bootcmd

This enables distro_bootcmd for the imx8m SOM and the Librem5 dev kit.
It allows flash-kernel to work.

configs/librem5_devkit_base_defconfig

@@ -10,6 +10,7 @@ CONFIG_OF_LIBFDT=y
 CONFIG_CMD_CACHE=y
 CONFIG_DEFAULT_DEVICE_TREE="librem5-evk"
 CONFIG_OF_CONTROL=y
+CONFIG_DISTRO_DEFAULTS=y
 
 CONFIG_FASTBOOT=y
 CONFIG_USB_FUNCTION_FASTBOOT=y

include/configs/imx8m_som.h

@@ -121,6 +121,22 @@
 
 #endif
 
+#define CONFIG_CMD_USB
+#define CONFIG_CMD_MMC
+
+#ifndef CONFIG_SPL_BUILD
+#include <config_distro_defaults.h>
+#define BOOT_TARGET_DEVICES(func) \
+        func(MMC, mmc, 0) \
+        func(MMC, mmc, 1) \
+        func(USB, usb, 0) \
+        func(PXE, pxe, na) \
+        func(DHCP, dhcp, na)
+#include <config_distro_bootcmd.h>
+#else
+#define BOOTENV
+#endif
+
 #ifdef CONFIG_NAND_BOOT
 #define MFG_NAND_PARTITION "mtdparts=gpmi-nand:64m(boot),16m(fit),32m(kernel),16m(dtb),8m(misc),-(rootfs) "
 #else
@@ -158,68 +174,17 @@
 #else
 #define CONFIG_EXTRA_ENV_SETTINGS		\
 	CONFIG_MFG_ENV_SETTINGS \
-	"script=boot.scr\0" \
-	"image=Image\0" \
-	"fdt_file=dtbs/librem5-evk.dtb\0" \
-	"ip_dyn=no\0" \
-	"ipaddr=172.17.33.41\0" \
-	"serverip=172.17.0.1\0" \
-	"fdt_addr=0x43000000\0"			\
-	"fdt_high=0xffffffffffffffff\0"		\
-	"boot_fdt=try\0" \
-	"initrd_addr=0x43800000\0"		\
-	"initrd_high=0xffffffffffffffff\0" \
-	"mmcdev="__stringify(CONFIG_SYS_MMC_ENV_DEV)"\0" \
-	"mmcroot=" CONFIG_MMCROOT " rootwait rw\0" \
-	"mmcautodetect=yes\0" \
-	"args_common=console=ttymxc0,115200 earlycon=ec_imx6q,0x30860000,115200 " \
-	"video=HDMI-A-1:1920x1080-32@60\0" \
-	"args_quiet=setenv bootargs ${args_common} quiet=quiet\0" \
-	"args_verbose=setenv bootargs ${args_common} ignore_loglevel\0" \
-	"args=run args_verbose\0" \
-	"netargs=setenv bootargs ${bootargs} " \
-                "root=/dev/nfs nfsroot=${serverip}:${nfsroot},v3,tcp\0" \
-	"mmcargs=setenv bootargs ${bootargs} root=${mmcroot}\0 " \
-	"findmmcpart=if itest.s \"x\" == \"x$mmcpart\"; then part list mmc ${mmcdev} -bootable mmcpart; fi\0" \
-	"loadbootscript=run findmmcpart; ext2load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \
-	"bootscript=echo Running bootscript from mmc ...; " \
-		"source\0" \
-	"loadimage=run findmmcpart; ext2load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}\0" \
-	"loadfdt=run findmmcpart; ext2load mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}\0" \
-	"rtos_file=imx8mq_m4_TCM_rpmsg_lite_str_echo_rtos.bin\0"       \
-	"rtos_bootaddr=0x7e0000\0"				       \
-	"rtosmmcboot=fatload mmc ${mmcdev}:${mmcpart} ${rtos_bootaddr} "  \
-		"${rtos_file} && bootaux ${rtos_bootaddr}\0"	       \
-	"rtosnetboot=tftp ${rtos_bootaddr} ${rtos_file} && "\
-		"bootaux ${rtos_bootaddr}\0"\
-	"rtosboot=run rtosmmcboot\0" \
-	"mmcboot=echo Booting from mmc ...; " \
-		"mmc dev ${mmcdev}; if mmc rescan; then "	\
-		"if run loadbootscript; then "			\
-			"run bootscript; "		       \
-		   "else " \
-			"run rtosboot; "				      \
-			"run args mmcargs addip loadfdt && run loadimage && " \
-			"booti ${loadaddr} - ${fdt_addr};" \
-		    "fi;" \
-		"fi\0" \
-	"addip=setenv bootargs ${bootargs} ip=${ipaddr}:${serverip}:${gatewayip}:" \
-		"${netmask}:${hostname}:eth0:off\0" \
-	"netboot=echo Booting from net ...; " \
-		"run args mmcargs;  " \
-		"if test ${ip_dyn} = yes; then " \
-			"setenv get_cmd dhcp; " \
-		"else " \
-			"setenv get_cmd tftp; " \
-		"fi; " \
-		"run rtosboot; " \
-		"${get_cmd} ${loadaddr} ${image} && " \
-		"${get_cmd} ${fdt_addr} ${fdt_file} && " \
-		"run addip && booti ${loadaddr} - ${fdt_addr};\0"
-#define CONFIG_BOOTCOMMAND "run mmcboot"
+	"scriptaddr=0x80000000\0" \
+	"pxefile_addr_r=0x80100000\0" \
+	"kernel_addr_r=0x80800000\0" \
+	"fdt_addr_r=0x83000000\0" \
+	"ramdisk_addr_r=0x83800000\0" \
+	"console=ttymxc0,115200\0" \
+	BOOTENV
 #endif
 
 /* Link Definitions */
+/* TODO: replace addresses with 0x8... definitions found used in practice? */
 #define CONFIG_LOADADDR			0x40480000
 #define CONFIG_SYS_TEXT_BASE		0x40200000
 
@@ -285,7 +250,6 @@
 
 #define CONFIG_IMX_BOOTAUX
 
-#define CONFIG_CMD_MMC
 #define CONFIG_FSL_ESDHC
 #define CONFIG_FSL_USDHC
 
@@ -336,7 +300,6 @@
 #define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS      2
 #endif
 
-#define CONFIG_CMD_USB
 #define CONFIG_USB_STORAGE
 #define CONFIG_CMD_EXT2