1 // SPDX-License-Identifier: GPL-2.0
42 	return efi_fb ? 0 : -ENOMEM;  in efi_earlycon_remap_fb()
105 	for (i = 0; i < height - font->height; i++) {  in efi_earlycon_scroll_up()
110 		src = efi_earlycon_map((i + font->height) * len, len);  in efi_earlycon_scroll_up()
131 	bytes = BITS_TO_BYTES(font->width);  in efi_earlycon_write_char()
132 	src = font->data + c * font->height * bytes + h * bytes;  in efi_earlycon_write_char()
134 	for (m = 0; m < font->width; m++) {  in efi_earlycon_write_char()
137 		if ((x >> (7 - n)) & 1)  in efi_earlycon_write_char()
155 	len = si->lfb_linelength;  in efi_earlycon_write()
158 		unsigned int linemax = (si->lfb_width - efi_x) / font->width;  in efi_earlycon_write()
159 		unsigned int h, count;  in efi_earlycon_write()  local
161 		count = strnchrnul(str, num, '\n') - str;  in efi_earlycon_write()
162 		if (count > linemax)  in efi_earlycon_write()
163 			count = linemax;  in efi_earlycon_write()
165 		for (h = 0; h < font->height; h++) {  in efi_earlycon_write()
173 			n = count;  in efi_earlycon_write()
176 			while (n-- > 0) {  in efi_earlycon_write()
178 				x += font->width;  in efi_earlycon_write()
185 		num -= count;  in efi_earlycon_write()
186 		efi_x += count * font->width;  in efi_earlycon_write()
187 		str += count;  in efi_earlycon_write()
192 			efi_y += font->height;  in efi_earlycon_write()
194 			num--;  in efi_earlycon_write()
197 		if (efi_x + font->width > si->lfb_width) {  in efi_earlycon_write()
200 			efi_y += font->height;  in efi_earlycon_write()
203 		if (efi_y + font->height > si->lfb_height) {  in efi_earlycon_write()
209 			efi_y -= font->height;  in efi_earlycon_write()
212 			for (i = 0; i < font->height; i++)  in efi_earlycon_write()
237 		return -ENODEV;  in efi_earlycon_setup()
245 	xres = si->lfb_width;  in efi_earlycon_setup()
246 	yres = si->lfb_height;  in efi_earlycon_setup()
252 	if (si->lfb_depth != 32)  in efi_earlycon_setup()
253 		return -ENODEV;  in efi_earlycon_setup()
255 	font = get_default_font(xres, yres, -1, -1);  in efi_earlycon_setup()
257 		return -ENODEV;  in efi_earlycon_setup()
260 	memset32(efi_x_array, rounddown(xres, font->width), ARRAY_SIZE(efi_x_array));  in efi_earlycon_setup()
261 	efi_y = rounddown(yres, font->height);  in efi_earlycon_setup()
264 	max_line_y = efi_y / font->height + 1;  in efi_earlycon_setup()
267 	efi_y -= font->height;  in efi_earlycon_setup()
268 	for (i = 0; i < (yres - efi_y) / font->height; i++)  in efi_earlycon_setup()
271 	device->con->write = efi_earlycon_write;  in efi_earlycon_setup()
272 	earlycon_console = device->con;  in efi_earlycon_setup()