1 // SPDX-License-Identifier: GPL-2.0
68 /* Calc BAT values for mapping the display and store them
70  * the display during identify_machine() and MMU_Init()
72  * The display is mapped to virtual address 0xD0000000, rather
107 void __init btext_setup_display(int width, int height, int depth, int pitch,  in btext_setup_display()  argument
117 	dispDeviceDepth = depth == 15 ? 16 : depth;  in btext_setup_display()
134  *  - build some kind of vgacon with it to enable early printk
135  *  - move to a separate file
136  *  - add a few video driver hooks to keep in sync with display
150 	offset = ((unsigned long) dispDeviceBase) - base;  in btext_map()
162 	unsigned int width, height, depth, pitch;  in btext_initialize()  local
166 	prop = of_get_property(np, "linux,bootx-width", NULL);  in btext_initialize()
170 		return -EINVAL;  in btext_initialize()
172 	prop = of_get_property(np, "linux,bootx-height", NULL);  in btext_initialize()
176 		return -EINVAL;  in btext_initialize()
178 	prop = of_get_property(np, "linux,bootx-depth", NULL);  in btext_initialize()
180 		prop = of_get_property(np, "depth", NULL);  in btext_initialize()
182 		return -EINVAL;  in btext_initialize()
183 	depth = *prop;  in btext_initialize()
184 	pitch = width * ((depth + 7) / 8);  in btext_initialize()
185 	prop = of_get_property(np, "linux,bootx-linebytes", NULL);  in btext_initialize()
192 	prop = of_get_property(np, "linux,bootx-addr", NULL);  in btext_initialize()
202 		return -EINVAL;  in btext_initialize()
210 	dispDeviceDepth = depth == 15 ? 16 : depth;  in btext_initialize()
223 	int rc = -ENODEV;  in btext_find_display()
225 	if (!of_node_is_type(np, "display")) {  in btext_find_display()
226 		printk("boot stdout isn't a display !\n");  in btext_find_display()
234 	for_each_node_by_type(np, "display") {  in btext_find_display()
261 /* Adjust the display to a new resolution */
263 			  int depth, int pitch)  in btext_update_display()  argument
277 	dispDeviceDepth = depth;  in btext_update_display()
294 	unsigned long width 	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in btext_clearscreen()
299 	for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)  in btext_clearscreen()
302 		for(j=width; j; --j)  in btext_clearscreen()
312 	unsigned long width 	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in btext_flushscreen()
316 	for (i=0; i < (dispDeviceRect[3] - dispDeviceRect[1]); i++)  in btext_flushscreen()
319 		for(j = width; j > 0; j -= 8) {  in btext_flushscreen()
331 	unsigned long width 	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in btext_flushline()
338 		for(j = width; j > 0; j -= 8) {  in btext_flushline()
353 	unsigned long width    	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in scrollscreen()
359 	for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)  in scrollscreen()
363 		for(j=width; j; --j)  in scrollscreen()
371 		for(j=width; j; --j)  in scrollscreen()
416 		base[0] = (-(bits >> 7) & fg) ^ bg;  in draw_byte_32()
417 		base[1] = (-((bits >> 6) & 1) & fg) ^ bg;  in draw_byte_32()
418 		base[2] = (-((bits >> 5) & 1) & fg) ^ bg;  in draw_byte_32()
419 		base[3] = (-((bits >> 4) & 1) & fg) ^ bg;  in draw_byte_32()
420 		base[4] = (-((bits >> 3) & 1) & fg) ^ bg;  in draw_byte_32()
421 		base[5] = (-((bits >> 2) & 1) & fg) ^ bg;  in draw_byte_32()
422 		base[6] = (-((bits >> 1) & 1) & fg) ^ bg;  in draw_byte_32()
423 		base[7] = (-(bits & 1) & fg) ^ bg;  in draw_byte_32()
498 			--g_loc_X;  in btext_drawchar()
501 		g_loc_X = (g_loc_X & -8) + 8;  in btext_drawchar()
522 		g_loc_Y--;  in btext_drawchar()
526 	   waste time scrolling each line.  -- paulus. */  in btext_drawchar()
548 	while (len--)  in btext_drawtext()
579 	/* If btext is enabled, we might have a BAT setup for early display,  in udbg_init_btext()