Add support for booting from CD-ROM. Make it possible to enable UFS

support using make arguments.

1 files changed, 19 insertions, 0 deletions

diff --git a/sys/boot/sparc64/loader/main.c b/sys/boot/sparc64/loader/main.c
index 406de39..b85286b 100644
--- a/sys/boot/sparc64/loader/main.c
+++ b/sys/boot/sparc64/loader/main.c
@@ -105,6 +105,9 @@ struct fs_ops *file_system[] = {
 #ifdef LOADER_UFS_SUPPORT
 	&ufs_fsops,
 #endif
+#ifdef LOADER_CD9660_SUPPORT
+	&cd9660_fsops,
+#endif
 #ifdef LOADER_NET_SUPPORT
 	&nfs_fsops,
 #endif
@@ -388,6 +391,22 @@ main(int (*openfirm)(void *))
 	switch (bootdev.d_type) {
 	case DEVT_DISK:
 		bootdev.d_dev = &ofwdisk;
+		/*
+		 * Sun compatible bootable CD-ROMs have a disk label placed
+		 * before the cd9660 data, with the actual file system being
+		 * in the first partition, while the other partitions contain
+		 * pseudo disk labels with embedded boot blocks for different
+		 * architectures, which may be followed by UFS file systems.
+		 * The firmware will set the boot path to the partition it
+		 * boots from ('f' in the sun4u case), but we want the kernel
+		 * to be loaded from the cd9660 fs ('a'), so the boot path
+		 * needs to be altered.
+		 */
+		if (strstr(bootpath, "cdrom") != NULL &&
+		    bootpath[strlen(bootpath) - 2] == ':') {
+			bootpath[strlen(bootpath) - 1] = 'a';
+			printf("Boot path set to %s\n", bootpath);
+		}
 		strncpy(bootdev.d_kind.ofwdisk.path, bootpath, 64);
 		ofw_parseofwdev(&bootdev, bootpath);
 		break;