1 // SPDX-License-Identifier: GPL-2.0
33 	if (!earlycon_console || !(earlycon_console->flags & CON_ENABLED))  in efi_earlycon_remap_fb()
39 	return efi_fb ? 0 : -ENOMEM;  in efi_earlycon_remap_fb()
46 	if (efi_fb && !(earlycon_console->flags & CON_ENABLED))  in efi_earlycon_unmap_fb()
94 	for (i = 0; i < height - font->height; i++) {  in efi_earlycon_scroll_up()
99 		src = efi_earlycon_map((i + font->height) * len, len);  in efi_earlycon_scroll_up()
120 	bytes = BITS_TO_BYTES(font->width);  in efi_earlycon_write_char()
121 	src = font->data + c * font->height * bytes + h * bytes;  in efi_earlycon_write_char()
123 	for (m = 0; m < font->width; m++) {  in efi_earlycon_write_char()
126 		if ((x >> (7 - n)) & 1)  in efi_earlycon_write_char()
143 	len = si->lfb_linelength;  in efi_earlycon_write()
147 		unsigned int h, count = 0;  in efi_earlycon_write()  local
150 			if (count == num)  in efi_earlycon_write()
152 			count++;  in efi_earlycon_write()
155 		linemax = (si->lfb_width - efi_x) / font->width;  in efi_earlycon_write()
156 		if (count > linemax)  in efi_earlycon_write()
157 			count = linemax;  in efi_earlycon_write()
159 		for (h = 0; h < font->height; h++) {  in efi_earlycon_write()
167 			n = count;  in efi_earlycon_write()
170 			while (n-- > 0) {  in efi_earlycon_write()
172 				x += font->width;  in efi_earlycon_write()
179 		num -= count;  in efi_earlycon_write()
180 		efi_x += count * font->width;  in efi_earlycon_write()
181 		str += count;  in efi_earlycon_write()
185 			efi_y += font->height;  in efi_earlycon_write()
187 			num--;  in efi_earlycon_write()
190 		if (efi_x + font->width > si->lfb_width) {  in efi_earlycon_write()
192 			efi_y += font->height;  in efi_earlycon_write()
195 		if (efi_y + font->height > si->lfb_height) {  in efi_earlycon_write()
198 			efi_y -= font->height;  in efi_earlycon_write()
201 			for (i = 0; i < font->height; i++)  in efi_earlycon_write()
215 		return -ENODEV;  in efi_earlycon_setup()
224 	xres = si->lfb_width;  in efi_earlycon_setup()
225 	yres = si->lfb_height;  in efi_earlycon_setup()
231 	if (si->lfb_depth != 32)  in efi_earlycon_setup()
232 		return -ENODEV;  in efi_earlycon_setup()
234 	font = get_default_font(xres, yres, -1, -1);  in efi_earlycon_setup()
236 		return -ENODEV;  in efi_earlycon_setup()
238 	efi_y = rounddown(yres, font->height) - font->height;  in efi_earlycon_setup()
239 	for (i = 0; i < (yres - efi_y) / font->height; i++)  in efi_earlycon_setup()
242 	device->con->write = efi_earlycon_write;  in efi_earlycon_setup()
243 	earlycon_console = device->con;  in efi_earlycon_setup()