10.3/boot-disable-multiboot.diff

Disable Multiboot support in boot loader, as it was designed for Xen only.
Includes boot-i386-loader-multiboot-deprioritize.diff.

diff -ru --exclude-from freebsd-src-diff-exclude-names /var/tmp/freebsd-10.3-src/usr/src/sys/boot/common/load_elf.c freebsd-10.3/usr/src/sys/boot/common/load_elf.c
--- /var/tmp/freebsd-10.3-src/usr/src/sys/boot/common/load_elf.c	2016-03-25 09:09:27.000000000 +0800
+++ freebsd-10.3/usr/src/sys/boot/common/load_elf.c	2019-05-15 18:46:30.670084560 +0800
@@ -161,6 +161,9 @@
     Elf_Ehdr 			*ehdr;
     int				err;
 
+#ifndef LOADER_USE_MULTIBOOT
+    if(multiboot) panic("%s: multiboot requested but LOADER_USE_MULTIBOOT was not set in build time", __func__);
+#endif
     fp = NULL;
     bzero(&ef, sizeof(struct elf_file));
     ef.fd = -1;
@@ -210,12 +213,14 @@
 	ef.kernel = 1;
 
     } else if (ehdr->e_type == ET_DYN) {
+#ifdef LOADER_USE_MULTIBOOT
 	/* Looks like a kld module */
 	if (multiboot != 0) {
 		printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: can't load module as multiboot\n");
 		err = EPERM;
 		goto oerr;
 	}
+#endif
 	if (kfp == NULL) {
 	    printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: can't load module before kernel\n");
 	    err = EPERM;
@@ -248,14 +253,20 @@
 	    err = EPERM;
 	    goto out;
     }
+#ifdef LOADER_USE_MULTIBOOT
     if (ef.kernel == 1 && multiboot == 0)
+#endif
 	setenv("kernelname", filename, 1);
     fp->f_name = strdup(filename);
+#ifdef LOADER_USE_MULTIBOOT
     if (multiboot == 0)
+#endif
     	fp->f_type = strdup(ef.kernel ?
     	    __elfN(kerneltype) : __elfN(moduletype));
+#ifdef LOADER_USE_MULTIBOOT
     else
     	fp->f_type = strdup("elf multiboot kernel");
+#endif
 
 #ifdef ELF_VERBOSE
     if (ef.kernel)
diff -ru --exclude-from freebsd-src-diff-exclude-names /var/tmp/freebsd-10.3-src/usr/src/sys/boot/i386/libi386/multiboot.c freebsd-10.3/usr/src/sys/boot/i386/libi386/multiboot.c
--- /var/tmp/freebsd-10.3-src/usr/src/sys/boot/i386/libi386/multiboot.c	2016-03-25 09:09:27.000000000 +0800
+++ freebsd-10.3/usr/src/sys/boot/i386/libi386/multiboot.c	2019-05-15 18:41:48.203156332 +0800
@@ -34,6 +34,8 @@
  * http://www.gnu.org/software/grub/manual/multiboot/multiboot.html
  */
 
+#ifdef LOADER_USE_MULTIBOOT
+
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD: releng/10.3/sys/boot/i386/libi386/multiboot.c 294417 2016-01-20 13:23:02Z royger $");
 
@@ -423,3 +425,5 @@
 
 	return (EFTYPE);
 }
+
+#endif
diff -ru --exclude-from freebsd-src-diff-exclude-names /var/tmp/freebsd-10.3-src/usr/src/sys/boot/i386/libi386/multiboot_tramp.S freebsd-10.3/usr/src/sys/boot/i386/libi386/multiboot_tramp.S
--- /var/tmp/freebsd-10.3-src/usr/src/sys/boot/i386/libi386/multiboot_tramp.S	2016-03-25 09:09:27.000000000 +0800
+++ freebsd-10.3/usr/src/sys/boot/i386/libi386/multiboot_tramp.S	2019-05-15 18:12:21.049222631 +0800
@@ -26,6 +26,8 @@
  * $FreeBSD: releng/10.3/sys/boot/i386/libi386/multiboot_tramp.S 294417 2016-01-20 13:23:02Z royger $
  */
 
+#ifdef LOADER_USE_MULTIBOOT
+
 #define ASM_FILE
 #include "multiboot.h"
 
@@ -49,3 +51,5 @@
 	movl	4(%esp), %ecx
 
 	call    *%ecx
+
+#endif
diff -ru --exclude-from freebsd-src-diff-exclude-names /var/tmp/freebsd-10.3-src/usr/src/sys/boot/i386/loader/conf.c freebsd-10.3/usr/src/sys/boot/i386/loader/conf.c
--- /var/tmp/freebsd-10.3-src/usr/src/sys/boot/i386/loader/conf.c	2016-03-25 09:09:27.000000000 +0800
+++ freebsd-10.3/usr/src/sys/boot/i386/loader/conf.c	2019-05-15 18:41:37.218103623 +0800
@@ -107,12 +107,12 @@
 extern struct file_format	i386_elf_obj;
 extern struct file_format	amd64_elf;
 extern struct file_format	amd64_elf_obj;
+#ifdef LOADER_USE_MULTIBOOT
 extern struct file_format	multiboot;
 extern struct file_format	multiboot_obj;
+#endif
 
 struct file_format *file_formats[] = {
-	&multiboot,
-	&multiboot_obj,
 #ifdef LOADER_PREFER_AMD64
     &amd64_elf,
     &amd64_elf_obj,
@@ -123,6 +123,10 @@
     &amd64_elf,
     &amd64_elf_obj,
 #endif
+#ifdef LOADER_USE_MULTIBOOT
+	&multiboot,
+	&multiboot_obj,
+#endif
     NULL
 };