x86/efi: Split the boot stub into 32/64 code paths

Make the decision which code path to take at runtime based on
efi_early->is64.
Signed-off-by: Matt Fleming <matt.fleming@intel.com>

arch/x86/boot/compressed/eboot.c

@@ -49,10 +49,63 @@ static void efi_printk(efi_system_table_t *, char *);
 static void efi_char16_printk(efi_system_table_t *, efi_char16_t *);
 
 static efi_status_t
-efi_file_size(efi_system_table_t *sys_table, void *__fh,
-	      efi_char16_t *filename_16, void **handle, u64 *file_sz)
+__file_size32(void *__fh, efi_char16_t *filename_16,
+	      void **handle, u64 *file_sz)
+{
+	efi_file_handle_32_t *h, *fh = __fh;
+	efi_file_info_t *info;
+	efi_status_t status;
+	efi_guid_t info_guid = EFI_FILE_INFO_ID;
+	u32 info_sz;
+
+	status = efi_early->call((unsigned long)fh->open, fh, &h, filename_16,
+				 EFI_FILE_MODE_READ, (u64)0);
+	if (status != EFI_SUCCESS) {
+		efi_printk(sys_table, "Failed to open file: ");
+		efi_char16_printk(sys_table, filename_16);
+		efi_printk(sys_table, "\n");
+		return status;
+	}
+
+	*handle = h;
+
+	info_sz = 0;
+	status = efi_early->call((unsigned long)h->get_info, h, &info_guid,
+				 &info_sz, NULL);
+	if (status != EFI_BUFFER_TOO_SMALL) {
+		efi_printk(sys_table, "Failed to get file info size\n");
+		return status;
+	}
+
+grow:
+	status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
+				 info_sz, (void **)&info);
+	if (status != EFI_SUCCESS) {
+		efi_printk(sys_table, "Failed to alloc mem for file info\n");
+		return status;
+	}
+
+	status = efi_early->call((unsigned long)h->get_info, h, &info_guid,
+				 &info_sz, info);
+	if (status == EFI_BUFFER_TOO_SMALL) {
+		efi_early->call(efi_early->free_pool, info);
+		goto grow;
+	}
+
+	*file_sz = info->file_size;
+	efi_early->call(efi_early->free_pool, info);
+
+	if (status != EFI_SUCCESS)
+		efi_printk(sys_table, "Failed to get initrd info\n");
+
+	return status;
+}
+
+static efi_status_t
+__file_size64(void *__fh, efi_char16_t *filename_16,
+	      void **handle, u64 *file_sz)
 {
-	efi_file_handle_t *h, *fh = __fh;
+	efi_file_handle_64_t *h, *fh = __fh;
 	efi_file_info_t *info;
 	efi_status_t status;
 	efi_guid_t info_guid = EFI_FILE_INFO_ID;
@@ -100,31 +153,82 @@ efi_file_size(efi_system_table_t *sys_table, void *__fh,
 
 	return status;
 }
+static efi_status_t
+efi_file_size(efi_system_table_t *sys_table, void *__fh,
+	      efi_char16_t *filename_16, void **handle, u64 *file_sz)
+{
+	if (efi_early->is64)
+		return __file_size64(__fh, filename_16, handle, file_sz);
+
+	return __file_size32(__fh, filename_16, handle, file_sz);
+}
 
 static inline efi_status_t
 efi_file_read(void *__fh, void *handle, unsigned long *size, void *addr)
 {
-	efi_file_handle_t *fh = __fh;
-	return efi_early->call((unsigned long)fh->read, handle, size, addr);
+	unsigned long func;
+
+	if (efi_early->is64) {
+		efi_file_handle_64_t *fh = __fh;
+
+		func = (unsigned long)fh->read;
+		return efi_early->call(func, handle, size, addr);
+	} else {
+		efi_file_handle_32_t *fh = __fh;
+
+		func = (unsigned long)fh->read;
+		return efi_early->call(func, handle, size, addr);
+	}
 }
 
 static inline efi_status_t efi_file_close(void *__fh, void *handle)
 {
-	efi_file_handle_t *fh = __fh;
+	if (efi_early->is64) {
+		efi_file_handle_64_t *fh = __fh;
 
-	return efi_early->call((unsigned long)fh->close, handle);
+		return efi_early->call((unsigned long)fh->close, handle);
+	} else {
+		efi_file_handle_32_t *fh = __fh;
+
+		return efi_early->call((unsigned long)fh->close, handle);
+	}
 }
 
-static inline efi_status_t
-efi_open_volume(efi_system_table_t *sys_table, void *__image, void **__fh)
+static inline efi_status_t __open_volume32(void *__image, void **__fh)
+{
+	efi_file_io_interface_t *io;
+	efi_loaded_image_32_t *image = __image;
+	efi_file_handle_32_t *fh;
+	efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID;
+	efi_status_t status;
+	void *handle = (void *)(unsigned long)image->device_handle;
+	unsigned long func;
+
+	status = efi_early->call(efi_early->handle_protocol, handle,
+				 &fs_proto, (void **)&io);
+	if (status != EFI_SUCCESS) {
+		efi_printk(sys_table, "Failed to handle fs_proto\n");
+		return status;
+	}
+
+	func = (unsigned long)io->open_volume;
+	status = efi_early->call(func, io, &fh);
+	if (status != EFI_SUCCESS)
+		efi_printk(sys_table, "Failed to open volume\n");
+
+	*__fh = fh;
+	return status;
+}
+
+static inline efi_status_t __open_volume64(void *__image, void **__fh)
 {
 	efi_file_io_interface_t *io;
-	efi_loaded_image_t *image = __image;
-	efi_file_handle_t *fh;
+	efi_loaded_image_64_t *image = __image;
+	efi_file_handle_64_t *fh;
 	efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID;
 	efi_status_t status;
 	void *handle = (void *)(unsigned long)image->device_handle;
-	u32 func;
+	unsigned long func;
 
 	status = efi_early->call(efi_early->handle_protocol, handle,
 				 &fs_proto, (void **)&io);
@@ -142,19 +246,39 @@ efi_open_volume(efi_system_table_t *sys_table, void *__image, void **__fh)
 	return status;
 }
 
-static inline void
-efi_char16_printk(efi_system_table_t *table, efi_char16_t *str)
+static inline efi_status_t
+efi_open_volume(efi_system_table_t *sys_table, void *__image, void **__fh)
+{
+	if (efi_early->is64)
+		return __open_volume64(__image, __fh);
+
+	return __open_volume32(__image, __fh);
+}
+
+static void efi_char16_printk(efi_system_table_t *table, efi_char16_t *str)
 {
-	struct efi_simple_text_output_protocol *out;
 	unsigned long output_string;
 	size_t offset;
-	unsigned long *func;
 
-	offset = offsetof(typeof(*out), output_string);
-	output_string = efi_early->text_output + offset;
-	func = (unsigned long *)output_string;
+	if (efi_early->is64) {
+		struct efi_simple_text_output_protocol_64 *out;
+		u64 *func;
+
+		offset = offsetof(typeof(*out), output_string);
+		output_string = efi_early->text_output + offset;
+		func = (u64 *)output_string;
+
+		efi_early->call(*func, efi_early->text_output, str);
+	} else {
+		struct efi_simple_text_output_protocol_32 *out;
+		u32 *func;
+
+		offset = offsetof(typeof(*out), output_string);
+		output_string = efi_early->text_output + offset;
+		func = (u32 *)output_string;
 
-	efi_early->call(*func, efi_early->text_output, str);
+		efi_early->call(*func, efi_early->text_output, str);
+	}
 }
 
 #include "../../../../drivers/firmware/efi/efi-stub-helper.c"
@@ -182,46 +306,86 @@ static void find_bits(unsigned long mask, u8 *pos, u8 *size)
 	*size = len;
 }
 
-static efi_status_t setup_efi_pci(struct boot_params *params)
+static efi_status_t
+__setup_efi_pci32(efi_pci_io_protocol_32 *pci, struct pci_setup_rom **__rom)
 {
-	efi_pci_io_protocol *pci;
+	struct pci_setup_rom *rom = NULL;
 	efi_status_t status;
-	void **pci_handle = NULL;
-	efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
-	unsigned long nr_pci, size = 0;
-	int i;
-	struct setup_data *data;
+	unsigned long size;
+	uint64_t attributes;
 
-	data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
+	status = efi_early->call(pci->attributes, pci,
+				 EfiPciIoAttributeOperationGet, 0, 0,
+				 &attributes);
+	if (status != EFI_SUCCESS)
+		return status;
 
-	while (data && data->next)
-		data = (struct setup_data *)(unsigned long)data->next;
+	if (!pci->romimage || !pci->romsize)
+		return EFI_INVALID_PARAMETER;
 
-	status = efi_early->call(efi_early->locate_handle,
-				 EFI_LOCATE_BY_PROTOCOL,
-				 &pci_proto, NULL, &size, pci_handle);
+	size = pci->romsize + sizeof(*rom);
 
-	if (status == EFI_BUFFER_TOO_SMALL) {
-		status = efi_early->call(efi_early->allocate_pool,
-					 EFI_LOADER_DATA,
-					 size, (void **)&pci_handle);
+	status = efi_early->call(efi_early->allocate_pool,
+				 EFI_LOADER_DATA, size, &rom);
 
-		if (status != EFI_SUCCESS)
-			return status;
+	if (status != EFI_SUCCESS)
+		return status;
 
-		status = efi_early->call(efi_early->locate_handle,
-					 EFI_LOCATE_BY_PROTOCOL, &pci_proto,
-					 NULL, &size, pci_handle);
-	}
+	memset(rom, 0, sizeof(*rom));
+
+	rom->data.type = SETUP_PCI;
+	rom->data.len = size - sizeof(struct setup_data);
+	rom->data.next = 0;
+	rom->pcilen = pci->romsize;
+	*__rom = rom;
+
+	status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16,
+				 PCI_VENDOR_ID, 1, &(rom->vendor));
 
 	if (status != EFI_SUCCESS)
-		goto free_handle;
+		goto free_struct;
+
+	status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16,
+				 PCI_DEVICE_ID, 1, &(rom->devid));
+
+	if (status != EFI_SUCCESS)
+		goto free_struct;
+
+	status = efi_early->call(pci->get_location, pci, &(rom->segment),
+				 &(rom->bus), &(rom->device), &(rom->function));
+
+	if (status != EFI_SUCCESS)
+		goto free_struct;
+
+	memcpy(rom->romdata, pci->romimage, pci->romsize);
+	return status;
+
+free_struct:
+	efi_early->call(efi_early->free_pool, rom);
+	return status;
+}
 
-	nr_pci = size / sizeof(void *);
+static efi_status_t
+setup_efi_pci32(struct boot_params *params, void **pci_handle,
+		unsigned long size)
+{
+	efi_pci_io_protocol_32 *pci = NULL;
+	efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
+	u32 *handles = (u32 *)(unsigned long)pci_handle;
+	efi_status_t status;
+	unsigned long nr_pci;
+	struct setup_data *data;
+	int i;
+
+	data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
+
+	while (data && data->next)
+		data = (struct setup_data *)(unsigned long)data->next;
+
+	nr_pci = size / sizeof(u32);
 	for (i = 0; i < nr_pci; i++) {
-		void *h = pci_handle[i];
-		uint64_t attributes;
-		struct pci_setup_rom *rom;
+		struct pci_setup_rom *rom = NULL;
+		u32 h = handles[i];
 
 		status = efi_early->call(efi_early->handle_protocol, h,
 					 &pci_proto, (void **)&pci);
@@ -232,56 +396,114 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
 		if (!pci)
 			continue;
 
-#ifdef CONFIG_X86_64
-		status = efi_early->call((unsigned long)pci->attributes, pci,
-					 EfiPciIoAttributeOperationGet, 0,
-					 &attributes);
-#else
-		status = efi_early->call((unsigned long)pci->attributes, pci,
-					 EfiPciIoAttributeOperationGet, 0, 0,
-					 &attributes);
-#endif
+		status = __setup_efi_pci32(pci, &rom);
 		if (status != EFI_SUCCESS)
 			continue;
 
-		if (!pci->romimage || !pci->romsize)
-			continue;
+		if (data)
+			data->next = (unsigned long)rom;
+		else
+			params->hdr.setup_data = (unsigned long)rom;
 
-		size = pci->romsize + sizeof(*rom);
+		data = (struct setup_data *)rom;
 
-		status = efi_early->call(efi_early->allocate_pool,
-					 EFI_LOADER_DATA, size, &rom);
+	}
 
-		if (status != EFI_SUCCESS)
-			continue;
+	return status;
+}
+
+static efi_status_t
+__setup_efi_pci64(efi_pci_io_protocol_64 *pci, struct pci_setup_rom **__rom)
+{
+	struct pci_setup_rom *rom;
+	efi_status_t status;
+	unsigned long size;
+	uint64_t attributes;
+
+	status = efi_early->call(pci->attributes, pci,
+				 EfiPciIoAttributeOperationGet, 0,
+				 &attributes);
+	if (status != EFI_SUCCESS)
+		return status;
 
-		rom->data.type = SETUP_PCI;
-		rom->data.len = size - sizeof(struct setup_data);
-		rom->data.next = 0;
-		rom->pcilen = pci->romsize;
+	if (!pci->romimage || !pci->romsize)
+		return EFI_INVALID_PARAMETER;
 
-		status = efi_early->call((unsigned long)pci->pci.read, pci,
-					 EfiPciIoWidthUint16, PCI_VENDOR_ID,
-					 1, &(rom->vendor));
+	size = pci->romsize + sizeof(*rom);
 
-		if (status != EFI_SUCCESS)
-			goto free_struct;
+	status = efi_early->call(efi_early->allocate_pool,
+				 EFI_LOADER_DATA, size, &rom);
+
+	if (status != EFI_SUCCESS)
+		return status;
 
-		status = efi_early->call((unsigned long)pci->pci.read, pci,
-					 EfiPciIoWidthUint16, PCI_DEVICE_ID,
-					 1, &(rom->devid));
+	rom->data.type = SETUP_PCI;
+	rom->data.len = size - sizeof(struct setup_data);
+	rom->data.next = 0;
+	rom->pcilen = pci->romsize;
+	*__rom = rom;
 
-		if (status != EFI_SUCCESS)
-			goto free_struct;
+	status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16,
+				 PCI_VENDOR_ID, 1, &(rom->vendor));
+
+	if (status != EFI_SUCCESS)
+		goto free_struct;
+
+	status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16,
+				 PCI_DEVICE_ID, 1, &(rom->devid));
+
+	if (status != EFI_SUCCESS)
+		goto free_struct;
+
+	status = efi_early->call(pci->get_location, pci, &(rom->segment),
+				 &(rom->bus), &(rom->device), &(rom->function));
+
+	if (status != EFI_SUCCESS)
+		goto free_struct;
+
+	memcpy(rom->romdata, pci->romimage, pci->romsize);
+	return status;
+
+free_struct:
+	efi_early->call(efi_early->free_pool, rom);
+	return status;
+
+}
+
+static efi_status_t
+setup_efi_pci64(struct boot_params *params, void **pci_handle,
+		unsigned long size)
+{
+	efi_pci_io_protocol_64 *pci = NULL;
+	efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
+	u64 *handles = (u64 *)(unsigned long)pci_handle;
+	efi_status_t status;
+	unsigned long nr_pci;
+	struct setup_data *data;
+	int i;
+
+	data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
+
+	while (data && data->next)
+		data = (struct setup_data *)(unsigned long)data->next;
+
+	nr_pci = size / sizeof(u64);
+	for (i = 0; i < nr_pci; i++) {
+		struct pci_setup_rom *rom = NULL;
+		u64 h = handles[i];
 
-		status = efi_early->call((unsigned long)pci->get_location, pci,
-					 &(rom->segment), &(rom->bus),
-					 &(rom->device), &(rom->function));
+		status = efi_early->call(efi_early->handle_protocol, h,
+					 &pci_proto, (void **)&pci);
 
 		if (status != EFI_SUCCESS)
-			goto free_struct;
+			continue;
+
+		if (!pci)
+			continue;
 
-		memcpy(rom->romdata, pci->romimage, pci->romsize);
+		status = __setup_efi_pci64(pci, &rom);
+		if (status != EFI_SUCCESS)
+			continue;
 
 		if (data)
 			data->next = (unsigned long)rom;
@@ -290,104 +512,52 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
 
 		data = (struct setup_data *)rom;
 
-		continue;
-	free_struct:
-		efi_early->call(efi_early->free_pool, rom);
 	}
 
-free_handle:
-	efi_early->call(efi_early->free_pool, pci_handle);
 	return status;
 }
 
-/*
- * See if we have Graphics Output Protocol
- */
-static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
-			      unsigned long size)
+static efi_status_t setup_efi_pci(struct boot_params *params)
 {
-	struct efi_graphics_output_protocol *gop, *first_gop;
-	struct efi_pixel_bitmask pixel_info;
-	unsigned long nr_gops;
 	efi_status_t status;
-	void **gop_handle = NULL;
-	u16 width, height;
-	u32 fb_base, fb_size;
-	u32 pixels_per_scan_line;
-	int pixel_format;
-	int i;
-
-	status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
-				 size, (void **)&gop_handle);
-	if (status != EFI_SUCCESS)
-		return status;
+	void **pci_handle = NULL;
+	efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
+	unsigned long size = 0;
 
 	status = efi_early->call(efi_early->locate_handle,
 				 EFI_LOCATE_BY_PROTOCOL,
-				 proto, NULL, &size, gop_handle);
-	if (status != EFI_SUCCESS)
-		goto free_handle;
-
-	first_gop = NULL;
+				 &pci_proto, NULL, &size, pci_handle);
 
-	nr_gops = size / sizeof(void *);
-	for (i = 0; i < nr_gops; i++) {
-		struct efi_graphics_output_mode_info *info;
-		efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID;
-		bool conout_found = false;
-		void *dummy;
-		void *h = gop_handle[i];
+	if (status == EFI_BUFFER_TOO_SMALL) {
+		status = efi_early->call(efi_early->allocate_pool,
+					 EFI_LOADER_DATA,
+					 size, (void **)&pci_handle);
 
-		status = efi_early->call(efi_early->handle_protocol, h,
-					 proto, (void **)&gop);
 		if (status != EFI_SUCCESS)
-			continue;
-
-		status = efi_early->call(efi_early->handle_protocol, h,
-					 &conout_proto, &dummy);
-		if (status == EFI_SUCCESS)
-			conout_found = true;
-
-		status = efi_early->call((unsigned long)gop->query_mode, gop,
-					 gop->mode->mode, &size, &info);
-		if (status == EFI_SUCCESS && (!first_gop || conout_found)) {
-			/*
-			 * Systems that use the UEFI Console Splitter may
-			 * provide multiple GOP devices, not all of which are
-			 * backed by real hardware. The workaround is to search
-			 * for a GOP implementing the ConOut protocol, and if
-			 * one isn't found, to just fall back to the first GOP.
-			 */
-			width = info->horizontal_resolution;
-			height = info->vertical_resolution;
-			fb_base = gop->mode->frame_buffer_base;
-			fb_size = gop->mode->frame_buffer_size;
-			pixel_format = info->pixel_format;
-			pixel_info = info->pixel_information;
-			pixels_per_scan_line = info->pixels_per_scan_line;
+			return status;
 
-			/*
-			 * Once we've found a GOP supporting ConOut,
-			 * don't bother looking any further.
-			 */
-			first_gop = gop;
-			if (conout_found)
-				break;
-		}
+		status = efi_early->call(efi_early->locate_handle,
+					 EFI_LOCATE_BY_PROTOCOL, &pci_proto,
+					 NULL, &size, pci_handle);
 	}
 
-	/* Did we find any GOPs? */
-	if (!first_gop)
+	if (status != EFI_SUCCESS)
 		goto free_handle;
 
-	/* EFI framebuffer */
-	si->orig_video_isVGA = VIDEO_TYPE_EFI;
+	if (efi_early->is64)
+		status = setup_efi_pci64(params, pci_handle, size);
+	else
+		status = setup_efi_pci32(params, pci_handle, size);
 
-	si->lfb_width = width;
-	si->lfb_height = height;
-	si->lfb_base = fb_base;
-	si->pages = 1;
+free_handle:
+	efi_early->call(efi_early->free_pool, pci_handle);
+	return status;
+}
 
+static void
+setup_pixel_info(struct screen_info *si, u32 pixels_per_scan_line,
+		 struct efi_pixel_bitmask pixel_info, int pixel_format)
+{
 	if (pixel_format == PIXEL_RGB_RESERVED_8BIT_PER_COLOR) {
 		si->lfb_depth = 32;
 		si->lfb_linelength = pixels_per_scan_line * 4;
@@ -432,51 +602,310 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
 		si->rsvd_size = 0;
 		si->rsvd_pos = 0;
 	}
+}
+
+static efi_status_t
+__gop_query32(struct efi_graphics_output_protocol_32 *gop32,
+	      struct efi_graphics_output_mode_info **info,
+	      unsigned long *size, u32 *fb_base)
+{
+	struct efi_graphics_output_protocol_mode_32 *mode;
+	efi_status_t status;
+	unsigned long m;
+
+	m = gop32->mode;
+	mode = (struct efi_graphics_output_protocol_mode_32 *)m;
+
+	status = efi_early->call(gop32->query_mode, gop32,
+				 mode->mode, size, info);
+	if (status != EFI_SUCCESS)
+		return status;
+
+	*fb_base = mode->frame_buffer_base;
+	return status;
+}
+
+static efi_status_t
+setup_gop32(struct screen_info *si, efi_guid_t *proto,
+	    unsigned long size, void **gop_handle)
+{
+	struct efi_graphics_output_protocol_32 *gop32, *first_gop;
+	unsigned long nr_gops;
+	u16 width, height;
+	u32 pixels_per_scan_line;
+	u32 fb_base;
+	struct efi_pixel_bitmask pixel_info;
+	int pixel_format;
+	efi_status_t status;
+	u32 *handles = (u32 *)(unsigned long)gop_handle;
+	int i;
+
+	first_gop = NULL;
+	gop32 = NULL;
+
+	nr_gops = size / sizeof(u32);
+	for (i = 0; i < nr_gops; i++) {
+		struct efi_graphics_output_mode_info *info = NULL;
+		efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID;
+		bool conout_found = false;
+		void *dummy = NULL;
+		u32 h = handles[i];
+
+		status = efi_early->call(efi_early->handle_protocol, h,
+					 proto, (void **)&gop32);
+		if (status != EFI_SUCCESS)
+			continue;
+
+		status = efi_early->call(efi_early->handle_protocol, h,
+					 &conout_proto, &dummy);
+		if (status == EFI_SUCCESS)
+			conout_found = true;
+
+		status = __gop_query32(gop32, &info, &size, &fb_base);
+		if (status == EFI_SUCCESS && (!first_gop || conout_found)) {
+			/*
+			 * Systems that use the UEFI Console Splitter may
+			 * provide multiple GOP devices, not all of which are
+			 * backed by real hardware. The workaround is to search
+			 * for a GOP implementing the ConOut protocol, and if
+			 * one isn't found, to just fall back to the first GOP.
+			 */
+			width = info->horizontal_resolution;
+			height = info->vertical_resolution;
+			pixel_format = info->pixel_format;
+			pixel_info = info->pixel_information;
+			pixels_per_scan_line = info->pixels_per_scan_line;
+
+			/*
+			 * Once we've found a GOP supporting ConOut,
+			 * don't bother looking any further.
+			 */
+			first_gop = gop32;
+			if (conout_found)
+				break;
+		}
+	}
+
+	/* Did we find any GOPs? */
+	if (!first_gop)
+		goto out;
+
+	/* EFI framebuffer */
+	si->orig_video_isVGA = VIDEO_TYPE_EFI;
+
+	si->lfb_width = width;
+	si->lfb_height = height;
+	si->lfb_base = fb_base;
+	si->pages = 1;
+
+	setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format);
 
 	si->lfb_size = si->lfb_linelength * si->lfb_height;
 
 	si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS;
+out:
+	return status;
+}
 
-free_handle:
-	efi_early->call(efi_early->free_pool, gop_handle);
+static efi_status_t
+__gop_query64(struct efi_graphics_output_protocol_64 *gop64,
+	      struct efi_graphics_output_mode_info **info,
+	      unsigned long *size, u32 *fb_base)
+{
+	struct efi_graphics_output_protocol_mode_64 *mode;
+	efi_status_t status;
+	unsigned long m;
+
+	m = gop64->mode;
+	mode = (struct efi_graphics_output_protocol_mode_64 *)m;
+
+	status = efi_early->call(gop64->query_mode, gop64,
+				 mode->mode, size, info);
+	if (status != EFI_SUCCESS)
+		return status;
+
+	*fb_base = mode->frame_buffer_base;
+	return status;
+}
+
+static efi_status_t
+setup_gop64(struct screen_info *si, efi_guid_t *proto,
+	    unsigned long size, void **gop_handle)
+{
+	struct efi_graphics_output_protocol_64 *gop64, *first_gop;
+	unsigned long nr_gops;
+	u16 width, height;
+	u32 pixels_per_scan_line;
+	u32 fb_base;
+	struct efi_pixel_bitmask pixel_info;
+	int pixel_format;
+	efi_status_t status;
+	u64 *handles = (u64 *)(unsigned long)gop_handle;
+	int i;
+
+	first_gop = NULL;
+	gop64 = NULL;
+
+	nr_gops = size / sizeof(u64);
+	for (i = 0; i < nr_gops; i++) {
+		struct efi_graphics_output_mode_info *info = NULL;
+		efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID;
+		bool conout_found = false;
+		void *dummy = NULL;
+		u64 h = handles[i];
+
+		status = efi_early->call(efi_early->handle_protocol, h,
+					 proto, (void **)&gop64);
+		if (status != EFI_SUCCESS)
+			continue;
+
+		status = efi_early->call(efi_early->handle_protocol, h,
+					 &conout_proto, &dummy);
+		if (status == EFI_SUCCESS)
+			conout_found = true;
+
+		status = __gop_query64(gop64, &info, &size, &fb_base);
+		if (status == EFI_SUCCESS && (!first_gop || conout_found)) {
+			/*
+			 * Systems that use the UEFI Console Splitter may
+			 * provide multiple GOP devices, not all of which are
+			 * backed by real hardware. The workaround is to search
+			 * for a GOP implementing the ConOut protocol, and if
+			 * one isn't found, to just fall back to the first GOP.
+			 */
+			width = info->horizontal_resolution;
+			height = info->vertical_resolution;
+			pixel_format = info->pixel_format;
+			pixel_info = info->pixel_information;
+			pixels_per_scan_line = info->pixels_per_scan_line;
+
+			/*
+			 * Once we've found a GOP supporting ConOut,
+			 * don't bother looking any further.
+			 */
+			first_gop = gop64;
+			if (conout_found)
+				break;
+		}
+	}
+
+	/* Did we find any GOPs? */
+	if (!first_gop)
+		goto out;
+
+	/* EFI framebuffer */
+	si->orig_video_isVGA = VIDEO_TYPE_EFI;
+
+	si->lfb_width = width;
+	si->lfb_height = height;
+	si->lfb_base = fb_base;
+	si->pages = 1;
+
+	setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format);
+
+	si->lfb_size = si->lfb_linelength * si->lfb_height;
+
+	si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS;
+out:
 	return status;
 }
 
 /*
- * See if we have Universal Graphics Adapter (UGA) protocol
+ * See if we have Graphics Output Protocol
  */
-static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
+static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
 			      unsigned long size)
 {
-	struct efi_uga_draw_protocol *uga, *first_uga;
-	unsigned long nr_ugas;
 	efi_status_t status;
-	u32 width, height;
-	void **uga_handle = NULL;
-	int i;
+	void **gop_handle = NULL;
 
 	status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
-				 size, (void **)&uga_handle);
+				 size, (void **)&gop_handle);
 	if (status != EFI_SUCCESS)
 		return status;
 
 	status = efi_early->call(efi_early->locate_handle,
 				 EFI_LOCATE_BY_PROTOCOL,
-				 uga_proto, NULL, &size, uga_handle);
+				 proto, NULL, &size, gop_handle);
 	if (status != EFI_SUCCESS)
 		goto free_handle;
 
+	if (efi_early->is64)
+		status = setup_gop64(si, proto, size, gop_handle);
+	else
+		status = setup_gop32(si, proto, size, gop_handle);
+
+free_handle:
+	efi_early->call(efi_early->free_pool, gop_handle);
+	return status;
+}
+
+static efi_status_t
+setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height)
+{
+	struct efi_uga_draw_protocol *uga = NULL, *first_uga;
+	efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID;
+	unsigned long nr_ugas;
+	u32 *handles = (u32 *)uga_handle;;
+	efi_status_t status;
+	int i;
+
 	first_uga = NULL;
+	nr_ugas = size / sizeof(u32);
+	for (i = 0; i < nr_ugas; i++) {
+		efi_guid_t pciio_proto = EFI_PCI_IO_PROTOCOL_GUID;
+		u32 w, h, depth, refresh;
+		void *pciio;
+		u32 handle = handles[i];
+
+		status = efi_early->call(efi_early->handle_protocol, handle,
+					 &uga_proto, (void **)&uga);
+		if (status != EFI_SUCCESS)
+			continue;
+
+		efi_early->call(efi_early->handle_protocol, handle,
+				&pciio_proto, &pciio);
+
+		status = efi_early->call((unsigned long)uga->get_mode, uga,
+					 &w, &h, &depth, &refresh);
+		if (status == EFI_SUCCESS && (!first_uga || pciio)) {
+			*width = w;
+			*height = h;
+
+			/*
+			 * Once we've found a UGA supporting PCIIO,
+			 * don't bother looking any further.
+			 */
+			if (pciio)
+				break;
+
+			first_uga = uga;
+		}
+	}
+
+	return status;
+}
+
+static efi_status_t
+setup_uga64(void **uga_handle, unsigned long size, u32 *width, u32 *height)
+{
+	struct efi_uga_draw_protocol *uga = NULL, *first_uga;
+	efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID;
+	unsigned long nr_ugas;
+	u64 *handles = (u64 *)uga_handle;;
+	efi_status_t status;
+	int i;
 
-	nr_ugas = size / sizeof(void *);
+	first_uga = NULL;
+	nr_ugas = size / sizeof(u64);
 	for (i = 0; i < nr_ugas; i++) {
 		efi_guid_t pciio_proto = EFI_PCI_IO_PROTOCOL_GUID;
-		void *handle = uga_handle[i];
 		u32 w, h, depth, refresh;
 		void *pciio;
+		u64 handle = handles[i];
 
 		status = efi_early->call(efi_early->handle_protocol, handle,
-					 uga_proto, (void **)&uga);
+					 &uga_proto, (void **)&uga);
 		if (status != EFI_SUCCESS)
 			continue;
 
@@ -486,8 +915,8 @@ static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
 		status = efi_early->call((unsigned long)uga->get_mode, uga,
 					 &w, &h, &depth, &refresh);
 		if (status == EFI_SUCCESS && (!first_uga || pciio)) {
-			width = w;
-			height = h;
+			*width = w;
+			*height = h;
 
 			/*
 			 * Once we've found a UGA supporting PCIIO,
@@ -500,7 +929,39 @@ static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
 		}
 	}
 
-	if (!first_uga)
+	return status;
+}
+
+/*
+ * See if we have Universal Graphics Adapter (UGA) protocol
+ */
+static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
+			      unsigned long size)
+{
+	efi_status_t status;
+	u32 width, height;
+	void **uga_handle = NULL;
+
+	status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
+				 size, (void **)&uga_handle);
+	if (status != EFI_SUCCESS)
+		return status;
+
+	status = efi_early->call(efi_early->locate_handle,
+				 EFI_LOCATE_BY_PROTOCOL,
+				 uga_proto, NULL, &size, uga_handle);
+	if (status != EFI_SUCCESS)
+		goto free_handle;
+
+	height = 0;
+	width = 0;
+
+	if (efi_early->is64)
+		status = setup_uga64(uga_handle, size, &width, &height);
+	else
+		status = setup_uga32(uga_handle, size, &width, &height);
+
+	if (!width && !height)
 		goto free_handle;
 
 	/* EFI framebuffer */
@@ -519,7 +980,6 @@ static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
 	si->rsvd_size = 8;
 	si->rsvd_pos = 24;
 
-
 free_handle:
 	efi_early->call(efi_early->free_pool, uga_handle);
 	return status;