loader.efi: Make framebuffer commands available for arm64

Move framebuffer.{c,h} to sys/boot/efi/loader and add the efifb
related metadata and pass it to the kernel

Reviewed by:	imp, andrew
Differential Revision:	https://reviews.freebsd.org/D12757

sys/arm64/include/metadata.h

@@ -31,6 +31,7 @@
 
 #define	MODINFOMD_EFI_MAP	0x1001
 #define	MODINFOMD_DTBP		0x1002
+#define	MODINFOMD_EFI_FB	0x1003
 
 struct efi_map_header {
 	size_t		memory_size;
@@ -38,4 +39,16 @@ struct efi_map_header {
 	uint32_t	descriptor_version;
 };
 
+struct efi_fb {
+	uint64_t	fb_addr;
+	uint64_t	fb_size;
+	uint32_t	fb_height;
+	uint32_t	fb_width;
+	uint32_t	fb_stride;
+	uint32_t	fb_mask_red;
+	uint32_t	fb_mask_green;
+	uint32_t	fb_mask_blue;
+	uint32_t	fb_mask_reserved;
+};
+
 #endif /* !_MACHINE_METADATA_H_ */

sys/boot/efi/loader/Makefile

@@ -22,6 +22,7 @@ SRCS=	autoload.c \
 	conf.c \
 	copy.c \
 	efi_main.c \
+	framebuffer.c \
 	main.c \
 	self_reloc.c \
 	smbios.c \

sys/boot/efi/loader/arch/amd64/Makefile.inc

@@ -2,7 +2,6 @@
 
 SRCS+=	amd64_tramp.S \
 	start.S \
-	framebuffer.c \
 	elf64_freebsd.c \
 	trap.c \
 	exc.S

sys/boot/efi/loader/bootinfo.c

@@ -48,9 +48,10 @@ __FBSDID("$FreeBSD$");
 
 #if defined(__amd64__)
 #include <machine/specialreg.h>
-#include "framebuffer.h"
 #endif
 
+#include "framebuffer.h"
+
 #if defined(LOADER_FDT_SUPPORT)
 #include <fdt_platform.h>
 #endif
@@ -247,12 +248,12 @@ bi_load_efi_data(struct preloaded_file *kfp)
 	UINT32 mmver;
 	struct efi_map_header *efihdr;
 
-#if defined(__amd64__)
+#if defined(__amd64__) || defined(__aarch64__)
 	struct efi_fb efifb;
 
 	if (efi_find_framebuffer(&efifb) == 0) {
 		printf("EFI framebuffer information:\n");
-		printf("addr, size     0x%lx, 0x%lx\n", efifb.fb_addr,
+		printf("addr, size     0x%jx, 0x%jx\n", efifb.fb_addr,
 		    efifb.fb_size);
 		printf("dimensions     %d x %d\n", efifb.fb_width,
 		    efifb.fb_height);