Writes bootcmd

clitools/pkg/node/uboot/bootenvconfig.go

@@ -0,0 +1,60 @@
+package uboot
+
+import (
+	"fmt"
+	"strings"
+)
+
+func (c BootEnvConfig) Validate() error {
+	switch c.BootSource {
+	case "usb", "emmc":
+	default:
+		return fmt.Errorf("invalid boot source %q", c.BootSource)
+	}
+
+	switch c.BootPart {
+	case "A", "B":
+	default:
+		return fmt.Errorf("invalid boot part %q", c.BootPart)
+	}
+
+	if c.BootDisk < 0 {
+		return fmt.Errorf("invalid boot disk %d", c.BootDisk)
+	}
+	if c.RootfsAPartNum <= 0 {
+		return fmt.Errorf("invalid rootfs A part %d", c.RootfsAPartNum)
+	}
+	if c.RootfsBPartNum <= 0 {
+		return fmt.Errorf("invalid rootfs B part %d", c.RootfsBPartNum)
+	}
+	if c.DataPartNum <= 0 {
+		return fmt.Errorf("invalid data part %d", c.DataPartNum)
+	}
+	if strings.TrimSpace(c.LinuxRootPrefix) == "" {
+		return fmt.Errorf("linux root prefix is required")
+	}
+
+	return nil
+}
+
+func (c BootEnvConfig) bootCmdOrDefault() string {
+	if s := strings.TrimSpace(c.BootCmd); s != "" {
+		return s
+	}
+	return compactUBootScript(defaultBootCmdTemplate)
+}
+
+func compactUBootScript(s string) string {
+	lines := strings.Split(s, "\n")
+	out := make([]string, 0, len(lines))
+
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		out = append(out, line)
+	}
+
+	return strings.Join(out, " ")
+}