#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 "; " \
"done\0" \
\
"scan_dev_for_boot_part=" \
- "part list ${devtype} ${devnum} devplist; " \
+ "part list ${devtype} ${devnum} -bootable devplist; " \
+ "env exists devplist || setenv devplist 1; " \
"for bootpart in ${devplist}; do " \
"if fstype ${devtype} ${devnum}:${bootpart} " \
"bootfstype; then " \