X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=include%2Fconfig_distro_bootcmd.h;h=d71e58dae1e54e98141fa941aa14e804ffbb89e2;hb=f643d9294f45487f22e8f33d6572530f17eff4e9;hp=becbe3fa7cc29c80d2236db1da62e2278a36ff98;hpb=a1d31077d06d47233d2bd7002cf65d5ee9b5e501;p=oweals%2Fu-boot.git

diff --git a/include/config_distro_bootcmd.h b/include/config_distro_bootcmd.h
index becbe3fa7c..d71e58dae1 100644
--- a/include/config_distro_bootcmd.h
+++ b/include/config_distro_bootcmd.h
@@ -10,10 +10,30 @@
 #ifndef _CONFIG_CMD_DISTRO_BOOTCMD_H
 #define _CONFIG_CMD_DISTRO_BOOTCMD_H
 
+/*
+ * A note on error handling: It is possible for BOOT_TARGET_DEVICES to
+ * reference a device that is not enabled in the U-Boot configuration, e.g.
+ * it may include MMC in the list without CONFIG_CMD_MMC being enabled. Given
+ * that BOOT_TARGET_DEVICES is a macro that's expanded by the C pre-processor
+ * at compile time, it's not  possible to detect and report such problems via
+ * a simple #ifdef/#error combination. Still, the code needs to report errors.
+ * The best way I've found to do this is to make BOOT_TARGET_DEVICES expand to
+ * reference a non-existent symbol, and have the name of that symbol encode
+ * the error message. Consequently, this file contains references to e.g.
+ * BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC. Given the
+ * prevalence of capitals here, this looks like a pre-processor macro and
+ * hence seems like it should be all capitals, but it's really an error
+ * message that includes some other pre-processor symbols in the text.
+ */
+
+/* We need the part command */
+#define CONFIG_PARTITION_UUIDS
+#define CONFIG_CMD_PART
+
 #define BOOTENV_SHARED_BLKDEV_BODY(devtypel) \
 		"if " #devtypel " dev ${devnum}; then " \
 			"setenv devtype " #devtypel "; " \
-			"run scan_dev_for_boot; " \
+			"run scan_dev_for_boot_part; " \
 		"fi\0"
 
 #define BOOTENV_SHARED_BLKDEV(devtypel) \
@@ -110,7 +130,7 @@
 #define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \
 	"bootcmd_dhcp=" \
 		BOOTENV_RUN_USB_INIT \
-		"if dhcp ${scriptaddr} boot.scr.uimg; then " \
+		"if dhcp ${scriptaddr} ${boot_script_dhcp}; then " \
 			"source ${scriptaddr}; " \
 		"fi\0"
 #define BOOTENV_DEV_NAME_DHCP(devtypeu, devtypel, instance) \
@@ -154,8 +174,8 @@
 	BOOTENV_SHARED_IDE \
 	"boot_prefixes=/ /boot/\0" \
 	"boot_scripts=boot.scr.uimg boot.scr\0" \
+	"boot_script_dhcp=boot.scr.uimg\0" \
 	BOOTENV_BOOT_TARGETS \
-	"bootpart=1\0" \
 	\
 	"boot_extlinux="                                                  \
 		"sysboot ${devtype} ${devnum}:${bootpart} any "           \
@@ -186,17 +206,31 @@
 		"done\0"                                                  \
 	\
 	"scan_dev_for_boot="                                              \
-		"echo Scanning ${devtype} ${devnum}...; "                 \
+		"echo Scanning ${devtype} ${devnum}:${bootpart}...; "     \
 		"for prefix in ${boot_prefixes}; do "                     \
 			"run scan_dev_for_extlinux; "                     \
 			"run scan_dev_for_scripts; "                      \
 		"done\0"                                                  \
 	\
+	"scan_dev_for_boot_part="                                         \
+		"part list ${devtype} ${devnum} -bootable devplist; "     \
+		"env exists devplist || setenv devplist 1; "              \
+		"for bootpart in ${devplist}; do "                        \
+			"if fstype ${devtype} ${devnum}:${bootpart} "     \
+					"bootfstype; then "               \
+				"run scan_dev_for_boot; "                 \
+			"fi; "                                            \
+		"done\0"                                                  \
+	\
 	BOOT_TARGET_DEVICES(BOOTENV_DEV)                                  \
 	\
-	"bootcmd=" BOOTENV_SET_SCSI_NEED_INIT                             \
+	"distro_bootcmd=" BOOTENV_SET_SCSI_NEED_INIT                      \
 		"for target in ${boot_targets}; do "                      \
 			"run bootcmd_${target}; "                         \
 		"done\0"
 
+#ifndef CONFIG_BOOTCOMMAND
+#define CONFIG_BOOTCOMMAND "run distro_bootcmd"
+#endif
+
 #endif  /* _CONFIG_CMD_DISTRO_BOOTCMD_H */