1 // SPDX-License-Identifier: GPL-2.0
120 	dispDeviceRect[3] = height;  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
142 	unsigned long base, offset, size;  in btext_map()  local
149 	base = ((unsigned long) dispDeviceBase) & 0xFFFFF000UL;  in btext_map()
150 	offset = ((unsigned long) dispDeviceBase) - base;  in btext_map()
151 	size = dispDeviceRowBytes * dispDeviceRect[3] + offset  in btext_map()
153 	vbase = ioremap_wc(base, size);  in btext_map()
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()
182 		return -EINVAL;  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()
213 	dispDeviceRect[3] = height;  in btext_initialize()
223 	int rc = -ENODEV;  in btext_find_display()
248 /* Calc the base address of a given point (x,y) */
249 static unsigned char * calc_base(int x, int y)  in calc_base()  argument
251 	unsigned char *base;  in calc_base()  local
253 	base = logicalDisplayBase;  in calc_base()
254 	if (!base)  in calc_base()
255 		base = dispDeviceBase;  in calc_base()
256 	base += (x + dispDeviceRect[0]) * (dispDeviceDepth >> 3);  in calc_base()
257 	base += (y + dispDeviceRect[1]) * dispDeviceRowBytes;  in calc_base()
258 	return base;  in calc_base()
276 	dispDeviceRect[3] = height;  in btext_update_display()
293 	unsigned int *base	= (unsigned int *)calc_base(0, 0);  in btext_clearscreen()  local
294 	unsigned long width 	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in btext_clearscreen()
295 					(dispDeviceDepth >> 3)) >> 2;  in btext_clearscreen()
299 	for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)  in btext_clearscreen()
301 		unsigned int *ptr = base;  in btext_clearscreen()
302 		for(j=width; j; --j)  in btext_clearscreen()
304 		base += (dispDeviceRowBytes >> 2);  in btext_clearscreen()
311 	unsigned int *base	= (unsigned int *)calc_base(0, 0);  in btext_flushscreen()  local
312 	unsigned long width 	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in btext_flushscreen()
313 					(dispDeviceDepth >> 3)) >> 2;  in btext_flushscreen()
316 	for (i=0; i < (dispDeviceRect[3] - dispDeviceRect[1]); i++)  in btext_flushscreen()
318 		unsigned int *ptr = base;  in btext_flushscreen()
319 		for(j = width; j > 0; j -= 8) {  in btext_flushscreen()
323 		base += (dispDeviceRowBytes >> 2);  in btext_flushscreen()
330 	unsigned int *base	= (unsigned int *)calc_base(0, g_loc_Y << 4);  in btext_flushline()  local
331 	unsigned long width 	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in btext_flushline()
332 					(dispDeviceDepth >> 3)) >> 2;  in btext_flushline()
337 		unsigned int *ptr = base;  in btext_flushline()
338 		for(j = width; j > 0; j -= 8) {  in btext_flushline()
342 		base += (dispDeviceRowBytes >> 2);  in btext_flushline()
353 	unsigned long width    	= ((dispDeviceRect[2] - dispDeviceRect[0]) *  in scrollscreen()
354 				   (dispDeviceDepth >> 3)) >> 2;  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()
407 static void draw_byte_32(const unsigned char *font, unsigned int *base, int rb)  in draw_byte_32()  argument
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()
424 		base = (unsigned int *) ((char *)base + rb);  in draw_byte_32()
428 static inline void draw_byte_16(const unsigned char *font, unsigned int *base, int rb)  in draw_byte_16()  argument
438 		base[0] = (eb[bits >> 6] & fg) ^ bg;  in draw_byte_16()
439 		base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg;  in draw_byte_16()
440 		base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg;  in draw_byte_16()
441 		base[3] = (eb[bits & 3] & fg) ^ bg;  in draw_byte_16()
442 		base = (unsigned int *) ((char *)base + rb);  in draw_byte_16()
446 static inline void draw_byte_8(const unsigned char *font, unsigned int *base, int rb)  in draw_byte_8()  argument
456 		base[0] = (eb[bits >> 4] & fg) ^ bg;  in draw_byte_8()
457 		base[1] = (eb[bits & 0xf] & fg) ^ bg;  in draw_byte_8()
458 		base = (unsigned int *) ((char *)base + rb);  in draw_byte_8()
464 	unsigned char *base	= calc_base(locX << 3, locY << 4);  in draw_byte()  local
473 		draw_byte_32(font, (unsigned int *)base, rb);  in draw_byte()
477 		draw_byte_16(font, (unsigned int *)base, rb);  in draw_byte()
480 		draw_byte_8(font, (unsigned int *)base, rb);  in draw_byte()
490 	int x;  in btext_drawchar()  local
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()
530 		for (x = 0; x < g_max_loc_X; ++x)  in btext_drawchar()
531 			draw_byte(' ', x, g_loc_Y);  in btext_drawchar()
548 	while (len--)  in btext_drawtext()