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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Procedures for drawing on the screen early on in the boot process.
4 *
5 * Benjamin Herrenschmidt <benh@kernel.crashing.org>
6 */
7#include <linux/kernel.h>
8#include <linux/string.h>
9#include <linux/init.h>
10#include <linux/export.h>
11#include <linux/font.h>
12#include <linux/memblock.h>
13#include <linux/pgtable.h>
14#include <linux/of.h>
15
16#include <asm/sections.h>
17#include <asm/btext.h>
18#include <asm/page.h>
19#include <asm/mmu.h>
20#include <asm/io.h>
21#include <asm/processor.h>
22#include <asm/udbg.h>
23
24#define NO_SCROLL
25
26#ifndef NO_SCROLL
27static void scrollscreen(void);
28#endif
29
30#define __force_data __section(".data")
31
32static int g_loc_X __force_data;
33static int g_loc_Y __force_data;
34static int g_max_loc_X __force_data;
35static int g_max_loc_Y __force_data;
36
37static int dispDeviceRowBytes __force_data;
38static int dispDeviceDepth __force_data;
39static int dispDeviceRect[4] __force_data;
40static unsigned char *dispDeviceBase __force_data;
41static unsigned char *logicalDisplayBase __force_data;
42
43unsigned long disp_BAT[2] __initdata = {0, 0};
44
45static int boot_text_mapped __force_data;
46
47extern void rmci_on(void);
48extern void rmci_off(void);
49
50static inline void rmci_maybe_on(void)
51{
52#if defined(CONFIG_PPC_EARLY_DEBUG_BOOTX) && defined(CONFIG_PPC64)
53 if (!(mfmsr() & MSR_DR))
54 rmci_on();
55#endif
56}
57
58static inline void rmci_maybe_off(void)
59{
60#if defined(CONFIG_PPC_EARLY_DEBUG_BOOTX) && defined(CONFIG_PPC64)
61 if (!(mfmsr() & MSR_DR))
62 rmci_off();
63#endif
64}
65
66
67#ifdef CONFIG_PPC32
68/* Calc BAT values for mapping the display and store them
69 * in disp_BAT. Those values are then used from head.S to map
70 * the display during identify_machine() and MMU_Init()
71 *
72 * The display is mapped to virtual address 0xD0000000, rather
73 * than 1:1, because some CHRP machines put the frame buffer
74 * in the region starting at 0xC0000000 (PAGE_OFFSET).
75 * This mapping is temporary and will disappear as soon as the
76 * setup done by MMU_Init() is applied.
77 *
78 * For now, we align the BAT and then map 8Mb on 601 and 16Mb
79 * on other PPCs. This may cause trouble if the framebuffer
80 * is really badly aligned, but I didn't encounter this case
81 * yet.
82 */
83void __init btext_prepare_BAT(void)
84{
85 unsigned long vaddr = PAGE_OFFSET + 0x10000000;
86 unsigned long addr;
87 unsigned long lowbits;
88
89 addr = (unsigned long)dispDeviceBase;
90 if (!addr) {
91 boot_text_mapped = 0;
92 return;
93 }
94 lowbits = addr & ~0xFF000000UL;
95 addr &= 0xFF000000UL;
96 disp_BAT[0] = vaddr | (BL_16M<<2) | 2;
97 disp_BAT[1] = addr | (_PAGE_NO_CACHE | _PAGE_GUARDED | BPP_RW);
98 logicalDisplayBase = (void *) (vaddr + lowbits);
99}
100#endif
101
102
103/* This function can be used to enable the early boot text when doing
104 * OF booting or within bootx init. It must be followed by a btext_unmap()
105 * call before the logical address becomes unusable
106 */
107void __init btext_setup_display(int width, int height, int depth, int pitch,
108 unsigned long address)
109{
110 g_loc_X = 0;
111 g_loc_Y = 0;
112 g_max_loc_X = width / 8;
113 g_max_loc_Y = height / 16;
114 logicalDisplayBase = (unsigned char *)address;
115 dispDeviceBase = (unsigned char *)address;
116 dispDeviceRowBytes = pitch;
117 dispDeviceDepth = depth == 15 ? 16 : depth;
118 dispDeviceRect[0] = dispDeviceRect[1] = 0;
119 dispDeviceRect[2] = width;
120 dispDeviceRect[3] = height;
121 boot_text_mapped = 1;
122}
123
124void __init btext_unmap(void)
125{
126 boot_text_mapped = 0;
127}
128
129/* Here's a small text engine to use during early boot
130 * or for debugging purposes
131 *
132 * todo:
133 *
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
137 * changes.
138 */
139
140void btext_map(void)
141{
142 unsigned long base, offset, size;
143 unsigned char *vbase;
144
145 /* By default, we are no longer mapped */
146 boot_text_mapped = 0;
147 if (!dispDeviceBase)
148 return;
149 base = ((unsigned long) dispDeviceBase) & 0xFFFFF000UL;
150 offset = ((unsigned long) dispDeviceBase) - base;
151 size = dispDeviceRowBytes * dispDeviceRect[3] + offset
152 + dispDeviceRect[0];
153 vbase = ioremap_wc(base, size);
154 if (!vbase)
155 return;
156 logicalDisplayBase = vbase + offset;
157 boot_text_mapped = 1;
158}
159
160static int __init btext_initialize(struct device_node *np)
161{
162 unsigned int width, height, depth, pitch;
163 unsigned long address = 0;
164 const u32 *prop;
165
166 prop = of_get_property(np, "linux,bootx-width", NULL);
167 if (prop == NULL)
168 prop = of_get_property(np, "width", NULL);
169 if (prop == NULL)
170 return -EINVAL;
171 width = *prop;
172 prop = of_get_property(np, "linux,bootx-height", NULL);
173 if (prop == NULL)
174 prop = of_get_property(np, "height", NULL);
175 if (prop == NULL)
176 return -EINVAL;
177 height = *prop;
178 prop = of_get_property(np, "linux,bootx-depth", NULL);
179 if (prop == NULL)
180 prop = of_get_property(np, "depth", NULL);
181 if (prop == NULL)
182 return -EINVAL;
183 depth = *prop;
184 pitch = width * ((depth + 7) / 8);
185 prop = of_get_property(np, "linux,bootx-linebytes", NULL);
186 if (prop == NULL)
187 prop = of_get_property(np, "linebytes", NULL);
188 if (prop && *prop != 0xffffffffu)
189 pitch = *prop;
190 if (pitch == 1)
191 pitch = 0x1000;
192 prop = of_get_property(np, "linux,bootx-addr", NULL);
193 if (prop == NULL)
194 prop = of_get_property(np, "address", NULL);
195 if (prop)
196 address = *prop;
197
198 /* FIXME: Add support for PCI reg properties. Right now, only
199 * reliable on macs
200 */
201 if (address == 0)
202 return -EINVAL;
203
204 g_loc_X = 0;
205 g_loc_Y = 0;
206 g_max_loc_X = width / 8;
207 g_max_loc_Y = height / 16;
208 dispDeviceBase = (unsigned char *)address;
209 dispDeviceRowBytes = pitch;
210 dispDeviceDepth = depth == 15 ? 16 : depth;
211 dispDeviceRect[0] = dispDeviceRect[1] = 0;
212 dispDeviceRect[2] = width;
213 dispDeviceRect[3] = height;
214
215 btext_map();
216
217 return 0;
218}
219
220int __init btext_find_display(int allow_nonstdout)
221{
222 struct device_node *np = of_stdout;
223 int rc = -ENODEV;
224
225 if (!of_node_is_type(np, "display")) {
226 printk("boot stdout isn't a display !\n");
227 np = NULL;
228 }
229 if (np)
230 rc = btext_initialize(np);
231 if (rc == 0 || !allow_nonstdout)
232 return rc;
233
234 for_each_node_by_type(np, "display") {
235 if (of_property_read_bool(np, "linux,opened")) {
236 printk("trying %pOF ...\n", np);
237 rc = btext_initialize(np);
238 printk("result: %d\n", rc);
239 }
240 if (rc == 0) {
241 of_node_put(np);
242 break;
243 }
244 }
245 return rc;
246}
247
248/* Calc the base address of a given point (x,y) */
249static unsigned char * calc_base(int x, int y)
250{
251 unsigned char *base;
252
253 base = logicalDisplayBase;
254 if (!base)
255 base = dispDeviceBase;
256 base += (x + dispDeviceRect[0]) * (dispDeviceDepth >> 3);
257 base += (y + dispDeviceRect[1]) * dispDeviceRowBytes;
258 return base;
259}
260
261/* Adjust the display to a new resolution */
262void btext_update_display(unsigned long phys, int width, int height,
263 int depth, int pitch)
264{
265 if (!dispDeviceBase)
266 return;
267
268 /* check it's the same frame buffer (within 256MB) */
269 if ((phys ^ (unsigned long)dispDeviceBase) & 0xf0000000)
270 return;
271
272 dispDeviceBase = (__u8 *) phys;
273 dispDeviceRect[0] = 0;
274 dispDeviceRect[1] = 0;
275 dispDeviceRect[2] = width;
276 dispDeviceRect[3] = height;
277 dispDeviceDepth = depth;
278 dispDeviceRowBytes = pitch;
279 if (boot_text_mapped) {
280 iounmap(logicalDisplayBase);
281 boot_text_mapped = 0;
282 }
283 btext_map();
284 g_loc_X = 0;
285 g_loc_Y = 0;
286 g_max_loc_X = width / 8;
287 g_max_loc_Y = height / 16;
288}
289EXPORT_SYMBOL(btext_update_display);
290
291void __init btext_clearscreen(void)
292{
293 unsigned int *base = (unsigned int *)calc_base(0, 0);
294 unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
295 (dispDeviceDepth >> 3)) >> 2;
296 int i,j;
297
298 rmci_maybe_on();
299 for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)
300 {
301 unsigned int *ptr = base;
302 for(j=width; j; --j)
303 *(ptr++) = 0;
304 base += (dispDeviceRowBytes >> 2);
305 }
306 rmci_maybe_off();
307}
308
309void __init btext_flushscreen(void)
310{
311 unsigned int *base = (unsigned int *)calc_base(0, 0);
312 unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
313 (dispDeviceDepth >> 3)) >> 2;
314 int i,j;
315
316 for (i=0; i < (dispDeviceRect[3] - dispDeviceRect[1]); i++)
317 {
318 unsigned int *ptr = base;
319 for(j = width; j > 0; j -= 8) {
320 __asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
321 ptr += 8;
322 }
323 base += (dispDeviceRowBytes >> 2);
324 }
325 __asm__ __volatile__ ("sync" ::: "memory");
326}
327
328void __init btext_flushline(void)
329{
330 unsigned int *base = (unsigned int *)calc_base(0, g_loc_Y << 4);
331 unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
332 (dispDeviceDepth >> 3)) >> 2;
333 int i,j;
334
335 for (i=0; i < 16; i++)
336 {
337 unsigned int *ptr = base;
338 for(j = width; j > 0; j -= 8) {
339 __asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
340 ptr += 8;
341 }
342 base += (dispDeviceRowBytes >> 2);
343 }
344 __asm__ __volatile__ ("sync" ::: "memory");
345}
346
347
348#ifndef NO_SCROLL
349static void scrollscreen(void)
350{
351 unsigned int *src = (unsigned int *)calc_base(0,16);
352 unsigned int *dst = (unsigned int *)calc_base(0,0);
353 unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
354 (dispDeviceDepth >> 3)) >> 2;
355 int i,j;
356
357 rmci_maybe_on();
358
359 for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)
360 {
361 unsigned int *src_ptr = src;
362 unsigned int *dst_ptr = dst;
363 for(j=width; j; --j)
364 *(dst_ptr++) = *(src_ptr++);
365 src += (dispDeviceRowBytes >> 2);
366 dst += (dispDeviceRowBytes >> 2);
367 }
368 for (i=0; i<16; i++)
369 {
370 unsigned int *dst_ptr = dst;
371 for(j=width; j; --j)
372 *(dst_ptr++) = 0;
373 dst += (dispDeviceRowBytes >> 2);
374 }
375
376 rmci_maybe_off();
377}
378#endif /* ndef NO_SCROLL */
379
380static unsigned int expand_bits_8[16] = {
381 0x00000000,
382 0x000000ff,
383 0x0000ff00,
384 0x0000ffff,
385 0x00ff0000,
386 0x00ff00ff,
387 0x00ffff00,
388 0x00ffffff,
389 0xff000000,
390 0xff0000ff,
391 0xff00ff00,
392 0xff00ffff,
393 0xffff0000,
394 0xffff00ff,
395 0xffffff00,
396 0xffffffff
397};
398
399static unsigned int expand_bits_16[4] = {
400 0x00000000,
401 0x0000ffff,
402 0xffff0000,
403 0xffffffff
404};
405
406
407static void draw_byte_32(const unsigned char *font, unsigned int *base, int rb)
408{
409 int l, bits;
410 int fg = 0xFFFFFFFFUL;
411 int bg = 0x00000000UL;
412
413 for (l = 0; l < 16; ++l)
414 {
415 bits = *font++;
416 base[0] = (-(bits >> 7) & fg) ^ bg;
417 base[1] = (-((bits >> 6) & 1) & fg) ^ bg;
418 base[2] = (-((bits >> 5) & 1) & fg) ^ bg;
419 base[3] = (-((bits >> 4) & 1) & fg) ^ bg;
420 base[4] = (-((bits >> 3) & 1) & fg) ^ bg;
421 base[5] = (-((bits >> 2) & 1) & fg) ^ bg;
422 base[6] = (-((bits >> 1) & 1) & fg) ^ bg;
423 base[7] = (-(bits & 1) & fg) ^ bg;
424 base = (unsigned int *) ((char *)base + rb);
425 }
426}
427
428static inline void draw_byte_16(const unsigned char *font, unsigned int *base, int rb)
429{
430 int l, bits;
431 int fg = 0xFFFFFFFFUL;
432 int bg = 0x00000000UL;
433 unsigned int *eb = (int *)expand_bits_16;
434
435 for (l = 0; l < 16; ++l)
436 {
437 bits = *font++;
438 base[0] = (eb[bits >> 6] & fg) ^ bg;
439 base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg;
440 base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg;
441 base[3] = (eb[bits & 3] & fg) ^ bg;
442 base = (unsigned int *) ((char *)base + rb);
443 }
444}
445
446static inline void draw_byte_8(const unsigned char *font, unsigned int *base, int rb)
447{
448 int l, bits;
449 int fg = 0x0F0F0F0FUL;
450 int bg = 0x00000000UL;
451 unsigned int *eb = (int *)expand_bits_8;
452
453 for (l = 0; l < 16; ++l)
454 {
455 bits = *font++;
456 base[0] = (eb[bits >> 4] & fg) ^ bg;
457 base[1] = (eb[bits & 0xf] & fg) ^ bg;
458 base = (unsigned int *) ((char *)base + rb);
459 }
460}
461
462static noinline void draw_byte(unsigned char c, long locX, long locY)
463{
464 unsigned char *base = calc_base(locX << 3, locY << 4);
465 unsigned int font_index = c * 16;
466 const unsigned char *font = font_sun_8x16.data + font_index;
467 int rb = dispDeviceRowBytes;
468
469 rmci_maybe_on();
470 switch(dispDeviceDepth) {
471 case 24:
472 case 32:
473 draw_byte_32(font, (unsigned int *)base, rb);
474 break;
475 case 15:
476 case 16:
477 draw_byte_16(font, (unsigned int *)base, rb);
478 break;
479 case 8:
480 draw_byte_8(font, (unsigned int *)base, rb);
481 break;
482 }
483 rmci_maybe_off();
484}
485
486void btext_drawchar(char c)
487{
488 int cline = 0;
489#ifdef NO_SCROLL
490 int x;
491#endif
492 if (!boot_text_mapped)
493 return;
494
495 switch (c) {
496 case '\b':
497 if (g_loc_X > 0)
498 --g_loc_X;
499 break;
500 case '\t':
501 g_loc_X = (g_loc_X & -8) + 8;
502 break;
503 case '\r':
504 g_loc_X = 0;
505 break;
506 case '\n':
507 g_loc_X = 0;
508 g_loc_Y++;
509 cline = 1;
510 break;
511 default:
512 draw_byte(c, g_loc_X++, g_loc_Y);
513 }
514 if (g_loc_X >= g_max_loc_X) {
515 g_loc_X = 0;
516 g_loc_Y++;
517 cline = 1;
518 }
519#ifndef NO_SCROLL
520 while (g_loc_Y >= g_max_loc_Y) {
521 scrollscreen();
522 g_loc_Y--;
523 }
524#else
525 /* wrap around from bottom to top of screen so we don't
526 waste time scrolling each line. -- paulus. */
527 if (g_loc_Y >= g_max_loc_Y)
528 g_loc_Y = 0;
529 if (cline) {
530 for (x = 0; x < g_max_loc_X; ++x)
531 draw_byte(' ', x, g_loc_Y);
532 }
533#endif
534}
535
536void btext_drawstring(const char *c)
537{
538 if (!boot_text_mapped)
539 return;
540 while (*c)
541 btext_drawchar(*c++);
542}
543
544void __init btext_drawtext(const char *c, unsigned int len)
545{
546 if (!boot_text_mapped)
547 return;
548 while (len--)
549 btext_drawchar(*c++);
550}
551
552void __init btext_drawhex(unsigned long v)
553{
554 if (!boot_text_mapped)
555 return;
556#ifdef CONFIG_PPC64
557 btext_drawchar(hex_asc_hi(v >> 56));
558 btext_drawchar(hex_asc_lo(v >> 56));
559 btext_drawchar(hex_asc_hi(v >> 48));
560 btext_drawchar(hex_asc_lo(v >> 48));
561 btext_drawchar(hex_asc_hi(v >> 40));
562 btext_drawchar(hex_asc_lo(v >> 40));
563 btext_drawchar(hex_asc_hi(v >> 32));
564 btext_drawchar(hex_asc_lo(v >> 32));
565#endif
566 btext_drawchar(hex_asc_hi(v >> 24));
567 btext_drawchar(hex_asc_lo(v >> 24));
568 btext_drawchar(hex_asc_hi(v >> 16));
569 btext_drawchar(hex_asc_lo(v >> 16));
570 btext_drawchar(hex_asc_hi(v >> 8));
571 btext_drawchar(hex_asc_lo(v >> 8));
572 btext_drawchar(hex_asc_hi(v));
573 btext_drawchar(hex_asc_lo(v));
574 btext_drawchar(' ');
575}
576
577void __init udbg_init_btext(void)
578{
579 /* If btext is enabled, we might have a BAT setup for early display,
580 * thus we do enable some very basic udbg output
581 */
582 udbg_putc = btext_drawchar;
583}
1/*
2 * Procedures for drawing on the screen early on in the boot process.
3 *
4 * Benjamin Herrenschmidt <benh@kernel.crashing.org>
5 */
6#include <linux/kernel.h>
7#include <linux/string.h>
8#include <linux/init.h>
9#include <linux/module.h>
10#include <linux/memblock.h>
11
12#include <asm/sections.h>
13#include <asm/prom.h>
14#include <asm/btext.h>
15#include <asm/page.h>
16#include <asm/mmu.h>
17#include <asm/pgtable.h>
18#include <asm/io.h>
19#include <asm/processor.h>
20#include <asm/udbg.h>
21
22#define NO_SCROLL
23
24#ifndef NO_SCROLL
25static void scrollscreen(void);
26#endif
27
28static void draw_byte(unsigned char c, long locX, long locY);
29static void draw_byte_32(unsigned char *bits, unsigned int *base, int rb);
30static void draw_byte_16(unsigned char *bits, unsigned int *base, int rb);
31static void draw_byte_8(unsigned char *bits, unsigned int *base, int rb);
32
33#define __force_data __attribute__((__section__(".data")))
34
35static int g_loc_X __force_data;
36static int g_loc_Y __force_data;
37static int g_max_loc_X __force_data;
38static int g_max_loc_Y __force_data;
39
40static int dispDeviceRowBytes __force_data;
41static int dispDeviceDepth __force_data;
42static int dispDeviceRect[4] __force_data;
43static unsigned char *dispDeviceBase __force_data;
44static unsigned char *logicalDisplayBase __force_data;
45
46unsigned long disp_BAT[2] __initdata = {0, 0};
47
48#define cmapsz (16*256)
49
50static unsigned char vga_font[cmapsz];
51
52int boot_text_mapped __force_data = 0;
53int force_printk_to_btext = 0;
54
55#ifdef CONFIG_PPC32
56/* Calc BAT values for mapping the display and store them
57 * in disp_BAT. Those values are then used from head.S to map
58 * the display during identify_machine() and MMU_Init()
59 *
60 * The display is mapped to virtual address 0xD0000000, rather
61 * than 1:1, because some some CHRP machines put the frame buffer
62 * in the region starting at 0xC0000000 (PAGE_OFFSET).
63 * This mapping is temporary and will disappear as soon as the
64 * setup done by MMU_Init() is applied.
65 *
66 * For now, we align the BAT and then map 8Mb on 601 and 16Mb
67 * on other PPCs. This may cause trouble if the framebuffer
68 * is really badly aligned, but I didn't encounter this case
69 * yet.
70 */
71void __init btext_prepare_BAT(void)
72{
73 unsigned long vaddr = PAGE_OFFSET + 0x10000000;
74 unsigned long addr;
75 unsigned long lowbits;
76
77 addr = (unsigned long)dispDeviceBase;
78 if (!addr) {
79 boot_text_mapped = 0;
80 return;
81 }
82 if (PVR_VER(mfspr(SPRN_PVR)) != 1) {
83 /* 603, 604, G3, G4, ... */
84 lowbits = addr & ~0xFF000000UL;
85 addr &= 0xFF000000UL;
86 disp_BAT[0] = vaddr | (BL_16M<<2) | 2;
87 disp_BAT[1] = addr | (_PAGE_NO_CACHE | _PAGE_GUARDED | BPP_RW);
88 } else {
89 /* 601 */
90 lowbits = addr & ~0xFF800000UL;
91 addr &= 0xFF800000UL;
92 disp_BAT[0] = vaddr | (_PAGE_NO_CACHE | PP_RWXX) | 4;
93 disp_BAT[1] = addr | BL_8M | 0x40;
94 }
95 logicalDisplayBase = (void *) (vaddr + lowbits);
96}
97#endif
98
99
100/* This function can be used to enable the early boot text when doing
101 * OF booting or within bootx init. It must be followed by a btext_unmap()
102 * call before the logical address becomes unusable
103 */
104void __init btext_setup_display(int width, int height, int depth, int pitch,
105 unsigned long address)
106{
107 g_loc_X = 0;
108 g_loc_Y = 0;
109 g_max_loc_X = width / 8;
110 g_max_loc_Y = height / 16;
111 logicalDisplayBase = (unsigned char *)address;
112 dispDeviceBase = (unsigned char *)address;
113 dispDeviceRowBytes = pitch;
114 dispDeviceDepth = depth == 15 ? 16 : depth;
115 dispDeviceRect[0] = dispDeviceRect[1] = 0;
116 dispDeviceRect[2] = width;
117 dispDeviceRect[3] = height;
118 boot_text_mapped = 1;
119}
120
121void __init btext_unmap(void)
122{
123 boot_text_mapped = 0;
124}
125
126/* Here's a small text engine to use during early boot
127 * or for debugging purposes
128 *
129 * todo:
130 *
131 * - build some kind of vgacon with it to enable early printk
132 * - move to a separate file
133 * - add a few video driver hooks to keep in sync with display
134 * changes.
135 */
136
137static void map_boot_text(void)
138{
139 unsigned long base, offset, size;
140 unsigned char *vbase;
141
142 /* By default, we are no longer mapped */
143 boot_text_mapped = 0;
144 if (dispDeviceBase == 0)
145 return;
146 base = ((unsigned long) dispDeviceBase) & 0xFFFFF000UL;
147 offset = ((unsigned long) dispDeviceBase) - base;
148 size = dispDeviceRowBytes * dispDeviceRect[3] + offset
149 + dispDeviceRect[0];
150 vbase = __ioremap(base, size, _PAGE_NO_CACHE);
151 if (vbase == 0)
152 return;
153 logicalDisplayBase = vbase + offset;
154 boot_text_mapped = 1;
155}
156
157int btext_initialize(struct device_node *np)
158{
159 unsigned int width, height, depth, pitch;
160 unsigned long address = 0;
161 const u32 *prop;
162
163 prop = of_get_property(np, "linux,bootx-width", NULL);
164 if (prop == NULL)
165 prop = of_get_property(np, "width", NULL);
166 if (prop == NULL)
167 return -EINVAL;
168 width = *prop;
169 prop = of_get_property(np, "linux,bootx-height", NULL);
170 if (prop == NULL)
171 prop = of_get_property(np, "height", NULL);
172 if (prop == NULL)
173 return -EINVAL;
174 height = *prop;
175 prop = of_get_property(np, "linux,bootx-depth", NULL);
176 if (prop == NULL)
177 prop = of_get_property(np, "depth", NULL);
178 if (prop == NULL)
179 return -EINVAL;
180 depth = *prop;
181 pitch = width * ((depth + 7) / 8);
182 prop = of_get_property(np, "linux,bootx-linebytes", NULL);
183 if (prop == NULL)
184 prop = of_get_property(np, "linebytes", NULL);
185 if (prop && *prop != 0xffffffffu)
186 pitch = *prop;
187 if (pitch == 1)
188 pitch = 0x1000;
189 prop = of_get_property(np, "linux,bootx-addr", NULL);
190 if (prop == NULL)
191 prop = of_get_property(np, "address", NULL);
192 if (prop)
193 address = *prop;
194
195 /* FIXME: Add support for PCI reg properties. Right now, only
196 * reliable on macs
197 */
198 if (address == 0)
199 return -EINVAL;
200
201 g_loc_X = 0;
202 g_loc_Y = 0;
203 g_max_loc_X = width / 8;
204 g_max_loc_Y = height / 16;
205 dispDeviceBase = (unsigned char *)address;
206 dispDeviceRowBytes = pitch;
207 dispDeviceDepth = depth == 15 ? 16 : depth;
208 dispDeviceRect[0] = dispDeviceRect[1] = 0;
209 dispDeviceRect[2] = width;
210 dispDeviceRect[3] = height;
211
212 map_boot_text();
213
214 return 0;
215}
216
217int __init btext_find_display(int allow_nonstdout)
218{
219 const char *name;
220 struct device_node *np = NULL;
221 int rc = -ENODEV;
222
223 name = of_get_property(of_chosen, "linux,stdout-path", NULL);
224 if (name != NULL) {
225 np = of_find_node_by_path(name);
226 if (np != NULL) {
227 if (strcmp(np->type, "display") != 0) {
228 printk("boot stdout isn't a display !\n");
229 of_node_put(np);
230 np = NULL;
231 }
232 }
233 }
234 if (np)
235 rc = btext_initialize(np);
236 if (rc == 0 || !allow_nonstdout)
237 return rc;
238
239 for_each_node_by_type(np, "display") {
240 if (of_get_property(np, "linux,opened", NULL)) {
241 printk("trying %s ...\n", np->full_name);
242 rc = btext_initialize(np);
243 printk("result: %d\n", rc);
244 }
245 if (rc == 0)
246 break;
247 }
248 return rc;
249}
250
251/* Calc the base address of a given point (x,y) */
252static unsigned char * calc_base(int x, int y)
253{
254 unsigned char *base;
255
256 base = logicalDisplayBase;
257 if (base == 0)
258 base = dispDeviceBase;
259 base += (x + dispDeviceRect[0]) * (dispDeviceDepth >> 3);
260 base += (y + dispDeviceRect[1]) * dispDeviceRowBytes;
261 return base;
262}
263
264/* Adjust the display to a new resolution */
265void btext_update_display(unsigned long phys, int width, int height,
266 int depth, int pitch)
267{
268 if (dispDeviceBase == 0)
269 return;
270
271 /* check it's the same frame buffer (within 256MB) */
272 if ((phys ^ (unsigned long)dispDeviceBase) & 0xf0000000)
273 return;
274
275 dispDeviceBase = (__u8 *) phys;
276 dispDeviceRect[0] = 0;
277 dispDeviceRect[1] = 0;
278 dispDeviceRect[2] = width;
279 dispDeviceRect[3] = height;
280 dispDeviceDepth = depth;
281 dispDeviceRowBytes = pitch;
282 if (boot_text_mapped) {
283 iounmap(logicalDisplayBase);
284 boot_text_mapped = 0;
285 }
286 map_boot_text();
287 g_loc_X = 0;
288 g_loc_Y = 0;
289 g_max_loc_X = width / 8;
290 g_max_loc_Y = height / 16;
291}
292EXPORT_SYMBOL(btext_update_display);
293
294void btext_clearscreen(void)
295{
296 unsigned int *base = (unsigned int *)calc_base(0, 0);
297 unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
298 (dispDeviceDepth >> 3)) >> 2;
299 int i,j;
300
301 for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)
302 {
303 unsigned int *ptr = base;
304 for(j=width; j; --j)
305 *(ptr++) = 0;
306 base += (dispDeviceRowBytes >> 2);
307 }
308}
309
310void btext_flushscreen(void)
311{
312 unsigned int *base = (unsigned int *)calc_base(0, 0);
313 unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
314 (dispDeviceDepth >> 3)) >> 2;
315 int i,j;
316
317 for (i=0; i < (dispDeviceRect[3] - dispDeviceRect[1]); i++)
318 {
319 unsigned int *ptr = base;
320 for(j = width; j > 0; j -= 8) {
321 __asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
322 ptr += 8;
323 }
324 base += (dispDeviceRowBytes >> 2);
325 }
326 __asm__ __volatile__ ("sync" ::: "memory");
327}
328
329void btext_flushline(void)
330{
331 unsigned int *base = (unsigned int *)calc_base(0, g_loc_Y << 4);
332 unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
333 (dispDeviceDepth >> 3)) >> 2;
334 int i,j;
335
336 for (i=0; i < 16; i++)
337 {
338 unsigned int *ptr = base;
339 for(j = width; j > 0; j -= 8) {
340 __asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
341 ptr += 8;
342 }
343 base += (dispDeviceRowBytes >> 2);
344 }
345 __asm__ __volatile__ ("sync" ::: "memory");
346}
347
348
349#ifndef NO_SCROLL
350static void scrollscreen(void)
351{
352 unsigned int *src = (unsigned int *)calc_base(0,16);
353 unsigned int *dst = (unsigned int *)calc_base(0,0);
354 unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
355 (dispDeviceDepth >> 3)) >> 2;
356 int i,j;
357
358 for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)
359 {
360 unsigned int *src_ptr = src;
361 unsigned int *dst_ptr = dst;
362 for(j=width; j; --j)
363 *(dst_ptr++) = *(src_ptr++);
364 src += (dispDeviceRowBytes >> 2);
365 dst += (dispDeviceRowBytes >> 2);
366 }
367 for (i=0; i<16; i++)
368 {
369 unsigned int *dst_ptr = dst;
370 for(j=width; j; --j)
371 *(dst_ptr++) = 0;
372 dst += (dispDeviceRowBytes >> 2);
373 }
374}
375#endif /* ndef NO_SCROLL */
376
377void btext_drawchar(char c)
378{
379 int cline = 0;
380#ifdef NO_SCROLL
381 int x;
382#endif
383 if (!boot_text_mapped)
384 return;
385
386 switch (c) {
387 case '\b':
388 if (g_loc_X > 0)
389 --g_loc_X;
390 break;
391 case '\t':
392 g_loc_X = (g_loc_X & -8) + 8;
393 break;
394 case '\r':
395 g_loc_X = 0;
396 break;
397 case '\n':
398 g_loc_X = 0;
399 g_loc_Y++;
400 cline = 1;
401 break;
402 default:
403 draw_byte(c, g_loc_X++, g_loc_Y);
404 }
405 if (g_loc_X >= g_max_loc_X) {
406 g_loc_X = 0;
407 g_loc_Y++;
408 cline = 1;
409 }
410#ifndef NO_SCROLL
411 while (g_loc_Y >= g_max_loc_Y) {
412 scrollscreen();
413 g_loc_Y--;
414 }
415#else
416 /* wrap around from bottom to top of screen so we don't
417 waste time scrolling each line. -- paulus. */
418 if (g_loc_Y >= g_max_loc_Y)
419 g_loc_Y = 0;
420 if (cline) {
421 for (x = 0; x < g_max_loc_X; ++x)
422 draw_byte(' ', x, g_loc_Y);
423 }
424#endif
425}
426
427void btext_drawstring(const char *c)
428{
429 if (!boot_text_mapped)
430 return;
431 while (*c)
432 btext_drawchar(*c++);
433}
434
435void btext_drawtext(const char *c, unsigned int len)
436{
437 if (!boot_text_mapped)
438 return;
439 while (len--)
440 btext_drawchar(*c++);
441}
442
443void btext_drawhex(unsigned long v)
444{
445 if (!boot_text_mapped)
446 return;
447#ifdef CONFIG_PPC64
448 btext_drawchar(hex_asc_hi(v >> 56));
449 btext_drawchar(hex_asc_lo(v >> 56));
450 btext_drawchar(hex_asc_hi(v >> 48));
451 btext_drawchar(hex_asc_lo(v >> 48));
452 btext_drawchar(hex_asc_hi(v >> 40));
453 btext_drawchar(hex_asc_lo(v >> 40));
454 btext_drawchar(hex_asc_hi(v >> 32));
455 btext_drawchar(hex_asc_lo(v >> 32));
456#endif
457 btext_drawchar(hex_asc_hi(v >> 24));
458 btext_drawchar(hex_asc_lo(v >> 24));
459 btext_drawchar(hex_asc_hi(v >> 16));
460 btext_drawchar(hex_asc_lo(v >> 16));
461 btext_drawchar(hex_asc_hi(v >> 8));
462 btext_drawchar(hex_asc_lo(v >> 8));
463 btext_drawchar(hex_asc_hi(v));
464 btext_drawchar(hex_asc_lo(v));
465 btext_drawchar(' ');
466}
467
468static void draw_byte(unsigned char c, long locX, long locY)
469{
470 unsigned char *base = calc_base(locX << 3, locY << 4);
471 unsigned char *font = &vga_font[((unsigned int)c) * 16];
472 int rb = dispDeviceRowBytes;
473
474 switch(dispDeviceDepth) {
475 case 24:
476 case 32:
477 draw_byte_32(font, (unsigned int *)base, rb);
478 break;
479 case 15:
480 case 16:
481 draw_byte_16(font, (unsigned int *)base, rb);
482 break;
483 case 8:
484 draw_byte_8(font, (unsigned int *)base, rb);
485 break;
486 }
487}
488
489static unsigned int expand_bits_8[16] = {
490 0x00000000,
491 0x000000ff,
492 0x0000ff00,
493 0x0000ffff,
494 0x00ff0000,
495 0x00ff00ff,
496 0x00ffff00,
497 0x00ffffff,
498 0xff000000,
499 0xff0000ff,
500 0xff00ff00,
501 0xff00ffff,
502 0xffff0000,
503 0xffff00ff,
504 0xffffff00,
505 0xffffffff
506};
507
508static unsigned int expand_bits_16[4] = {
509 0x00000000,
510 0x0000ffff,
511 0xffff0000,
512 0xffffffff
513};
514
515
516static void draw_byte_32(unsigned char *font, unsigned int *base, int rb)
517{
518 int l, bits;
519 int fg = 0xFFFFFFFFUL;
520 int bg = 0x00000000UL;
521
522 for (l = 0; l < 16; ++l)
523 {
524 bits = *font++;
525 base[0] = (-(bits >> 7) & fg) ^ bg;
526 base[1] = (-((bits >> 6) & 1) & fg) ^ bg;
527 base[2] = (-((bits >> 5) & 1) & fg) ^ bg;
528 base[3] = (-((bits >> 4) & 1) & fg) ^ bg;
529 base[4] = (-((bits >> 3) & 1) & fg) ^ bg;
530 base[5] = (-((bits >> 2) & 1) & fg) ^ bg;
531 base[6] = (-((bits >> 1) & 1) & fg) ^ bg;
532 base[7] = (-(bits & 1) & fg) ^ bg;
533 base = (unsigned int *) ((char *)base + rb);
534 }
535}
536
537static void draw_byte_16(unsigned char *font, unsigned int *base, int rb)
538{
539 int l, bits;
540 int fg = 0xFFFFFFFFUL;
541 int bg = 0x00000000UL;
542 unsigned int *eb = (int *)expand_bits_16;
543
544 for (l = 0; l < 16; ++l)
545 {
546 bits = *font++;
547 base[0] = (eb[bits >> 6] & fg) ^ bg;
548 base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg;
549 base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg;
550 base[3] = (eb[bits & 3] & fg) ^ bg;
551 base = (unsigned int *) ((char *)base + rb);
552 }
553}
554
555static void draw_byte_8(unsigned char *font, unsigned int *base, int rb)
556{
557 int l, bits;
558 int fg = 0x0F0F0F0FUL;
559 int bg = 0x00000000UL;
560 unsigned int *eb = (int *)expand_bits_8;
561
562 for (l = 0; l < 16; ++l)
563 {
564 bits = *font++;
565 base[0] = (eb[bits >> 4] & fg) ^ bg;
566 base[1] = (eb[bits & 0xf] & fg) ^ bg;
567 base = (unsigned int *) ((char *)base + rb);
568 }
569}
570
571static unsigned char vga_font[cmapsz] = {
5720x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5730x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x81, 0xa5, 0x81, 0x81, 0xbd,
5740x99, 0x81, 0x81, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xff,
5750xdb, 0xff, 0xff, 0xc3, 0xe7, 0xff, 0xff, 0x7e, 0x00, 0x00, 0x00, 0x00,
5760x00, 0x00, 0x00, 0x00, 0x6c, 0xfe, 0xfe, 0xfe, 0xfe, 0x7c, 0x38, 0x10,
5770x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x7c, 0xfe,
5780x7c, 0x38, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18,
5790x3c, 0x3c, 0xe7, 0xe7, 0xe7, 0x18, 0x18, 0x3c, 0x00, 0x00, 0x00, 0x00,
5800x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0xff, 0xff, 0x7e, 0x18, 0x18, 0x3c,
5810x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c,
5820x3c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
5830xff, 0xff, 0xe7, 0xc3, 0xc3, 0xe7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
5840x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x66, 0x42, 0x42, 0x66, 0x3c, 0x00,
5850x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc3, 0x99, 0xbd,
5860xbd, 0x99, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x1e, 0x0e,
5870x1a, 0x32, 0x78, 0xcc, 0xcc, 0xcc, 0xcc, 0x78, 0x00, 0x00, 0x00, 0x00,
5880x00, 0x00, 0x3c, 0x66, 0x66, 0x66, 0x66, 0x3c, 0x18, 0x7e, 0x18, 0x18,
5890x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x33, 0x3f, 0x30, 0x30, 0x30,
5900x30, 0x70, 0xf0, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0x63,
5910x7f, 0x63, 0x63, 0x63, 0x63, 0x67, 0xe7, 0xe6, 0xc0, 0x00, 0x00, 0x00,
5920x00, 0x00, 0x00, 0x18, 0x18, 0xdb, 0x3c, 0xe7, 0x3c, 0xdb, 0x18, 0x18,
5930x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfe, 0xf8,
5940xf0, 0xe0, 0xc0, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x06, 0x0e,
5950x1e, 0x3e, 0xfe, 0x3e, 0x1e, 0x0e, 0x06, 0x02, 0x00, 0x00, 0x00, 0x00,
5960x00, 0x00, 0x18, 0x3c, 0x7e, 0x18, 0x18, 0x18, 0x7e, 0x3c, 0x18, 0x00,
5970x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
5980x66, 0x00, 0x66, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xdb,
5990xdb, 0xdb, 0x7b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x00, 0x00, 0x00, 0x00,
6000x00, 0x7c, 0xc6, 0x60, 0x38, 0x6c, 0xc6, 0xc6, 0x6c, 0x38, 0x0c, 0xc6,
6010x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6020xfe, 0xfe, 0xfe, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c,
6030x7e, 0x18, 0x18, 0x18, 0x7e, 0x3c, 0x18, 0x7e, 0x00, 0x00, 0x00, 0x00,
6040x00, 0x00, 0x18, 0x3c, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
6050x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
6060x18, 0x7e, 0x3c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6070x00, 0x18, 0x0c, 0xfe, 0x0c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6080x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x60, 0xfe, 0x60, 0x30, 0x00, 0x00,
6090x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xc0,
6100xc0, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6110x00, 0x24, 0x66, 0xff, 0x66, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6120x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x38, 0x7c, 0x7c, 0xfe, 0xfe, 0x00,
6130x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xfe, 0x7c, 0x7c,
6140x38, 0x38, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6150x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6160x00, 0x00, 0x18, 0x3c, 0x3c, 0x3c, 0x18, 0x18, 0x18, 0x00, 0x18, 0x18,
6170x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x66, 0x66, 0x24, 0x00, 0x00, 0x00,
6180x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6c,
6190x6c, 0xfe, 0x6c, 0x6c, 0x6c, 0xfe, 0x6c, 0x6c, 0x00, 0x00, 0x00, 0x00,
6200x18, 0x18, 0x7c, 0xc6, 0xc2, 0xc0, 0x7c, 0x06, 0x06, 0x86, 0xc6, 0x7c,
6210x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc2, 0xc6, 0x0c, 0x18,
6220x30, 0x60, 0xc6, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x6c,
6230x6c, 0x38, 0x76, 0xdc, 0xcc, 0xcc, 0xcc, 0x76, 0x00, 0x00, 0x00, 0x00,
6240x00, 0x30, 0x30, 0x30, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6250x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x18, 0x30, 0x30, 0x30, 0x30,
6260x30, 0x30, 0x18, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x18,
6270x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x18, 0x30, 0x00, 0x00, 0x00, 0x00,
6280x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x3c, 0xff, 0x3c, 0x66, 0x00, 0x00,
6290x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x7e,
6300x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6310x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0x30, 0x00, 0x00, 0x00,
6320x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x00,
6330x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6340x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6350x02, 0x06, 0x0c, 0x18, 0x30, 0x60, 0xc0, 0x80, 0x00, 0x00, 0x00, 0x00,
6360x00, 0x00, 0x7c, 0xc6, 0xc6, 0xce, 0xde, 0xf6, 0xe6, 0xc6, 0xc6, 0x7c,
6370x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x38, 0x78, 0x18, 0x18, 0x18,
6380x18, 0x18, 0x18, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7c, 0xc6,
6390x06, 0x0c, 0x18, 0x30, 0x60, 0xc0, 0xc6, 0xfe, 0x00, 0x00, 0x00, 0x00,
6400x00, 0x00, 0x7c, 0xc6, 0x06, 0x06, 0x3c, 0x06, 0x06, 0x06, 0xc6, 0x7c,
6410x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x1c, 0x3c, 0x6c, 0xcc, 0xfe,
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7980xc0, 0xc0, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7990x00, 0x00, 0xfe, 0x06, 0x06, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00,
8000x00, 0xc0, 0xc0, 0xc2, 0xc6, 0xcc, 0x18, 0x30, 0x60, 0xce, 0x9b, 0x06,
8010x0c, 0x1f, 0x00, 0x00, 0x00, 0xc0, 0xc0, 0xc2, 0xc6, 0xcc, 0x18, 0x30,
8020x66, 0xce, 0x96, 0x3e, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18,
8030x00, 0x18, 0x18, 0x18, 0x3c, 0x3c, 0x3c, 0x18, 0x00, 0x00, 0x00, 0x00,
8040x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x6c, 0xd8, 0x6c, 0x36, 0x00, 0x00,
8050x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xd8, 0x6c, 0x36,
8060x6c, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x44, 0x11, 0x44,
8070x11, 0x44, 0x11, 0x44, 0x11, 0x44, 0x11, 0x44, 0x11, 0x44, 0x11, 0x44,
8080x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa,
8090x55, 0xaa, 0x55, 0xaa, 0xdd, 0x77, 0xdd, 0x77, 0xdd, 0x77, 0xdd, 0x77,
8100xdd, 0x77, 0xdd, 0x77, 0xdd, 0x77, 0xdd, 0x77, 0x18, 0x18, 0x18, 0x18,
8110x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
8120x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xf8, 0x18, 0x18, 0x18, 0x18,
8130x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xf8, 0x18, 0xf8,
8140x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x36, 0x36, 0x36, 0x36,
8150x36, 0x36, 0x36, 0xf6, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8160x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x36, 0x36, 0x36, 0x36,
8170x36, 0x36, 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x18, 0xf8,
8180x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x36, 0x36, 0x36, 0x36,
8190x36, 0xf6, 0x06, 0xf6, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8200x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8210x36, 0x36, 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x06, 0xf6,
8220x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8230x36, 0xf6, 0x06, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8240x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0xfe, 0x00, 0x00, 0x00, 0x00,
8250x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0xf8, 0x18, 0xf8,
8260x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8270x00, 0x00, 0x00, 0xf8, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
8280x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1f, 0x00, 0x00, 0x00, 0x00,
8290x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xff,
8300x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8310x00, 0x00, 0x00, 0xff, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
8320x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1f, 0x18, 0x18, 0x18, 0x18,
8330x18, 0x18, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff,
8340x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0x18,
8350x18, 0x18, 0x18, 0xff, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
8360x18, 0x18, 0x18, 0x18, 0x18, 0x1f, 0x18, 0x1f, 0x18, 0x18, 0x18, 0x18,
8370x18, 0x18, 0x18, 0x18, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x37,
8380x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8390x36, 0x37, 0x30, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8400x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x30, 0x37, 0x36, 0x36, 0x36, 0x36,
8410x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0xf7, 0x00, 0xff,
8420x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8430x00, 0xff, 0x00, 0xf7, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8440x36, 0x36, 0x36, 0x36, 0x36, 0x37, 0x30, 0x37, 0x36, 0x36, 0x36, 0x36,
8450x36, 0x36, 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0xff,
8460x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x36, 0x36, 0x36,
8470x36, 0xf7, 0x00, 0xf7, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8480x18, 0x18, 0x18, 0x18, 0x18, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00,
8490x00, 0x00, 0x00, 0x00, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0xff,
8500x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8510x00, 0xff, 0x00, 0xff, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
8520x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x36, 0x36, 0x36, 0x36,
8530x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x3f,
8540x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0x18,
8550x18, 0x1f, 0x18, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8560x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x18, 0x1f, 0x18, 0x18, 0x18, 0x18,
8570x18, 0x18, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f,
8580x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8590x36, 0x36, 0x36, 0xff, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
8600x18, 0x18, 0x18, 0x18, 0x18, 0xff, 0x18, 0xff, 0x18, 0x18, 0x18, 0x18,
8610x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xf8,
8620x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8630x00, 0x00, 0x00, 0x1f, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
8640xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
8650xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff,
8660xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0xf0, 0xf0, 0xf0,
8670xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0,
8680x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f,
8690x0f, 0x0f, 0x0f, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
8700x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8710x00, 0x76, 0xdc, 0xd8, 0xd8, 0xd8, 0xdc, 0x76, 0x00, 0x00, 0x00, 0x00,
8720x00, 0x00, 0x78, 0xcc, 0xcc, 0xcc, 0xd8, 0xcc, 0xc6, 0xc6, 0xc6, 0xcc,
8730x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xc6, 0xc6, 0xc0, 0xc0, 0xc0,
8740xc0, 0xc0, 0xc0, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8750xfe, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x00, 0x00, 0x00, 0x00,
8760x00, 0x00, 0x00, 0xfe, 0xc6, 0x60, 0x30, 0x18, 0x30, 0x60, 0xc6, 0xfe,
8770x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xd8, 0xd8,
8780xd8, 0xd8, 0xd8, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8790x66, 0x66, 0x66, 0x66, 0x66, 0x7c, 0x60, 0x60, 0xc0, 0x00, 0x00, 0x00,
8800x00, 0x00, 0x00, 0x00, 0x76, 0xdc, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
8810x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x18, 0x3c, 0x66, 0x66,
8820x66, 0x3c, 0x18, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38,
8830x6c, 0xc6, 0xc6, 0xfe, 0xc6, 0xc6, 0x6c, 0x38, 0x00, 0x00, 0x00, 0x00,
8840x00, 0x00, 0x38, 0x6c, 0xc6, 0xc6, 0xc6, 0x6c, 0x6c, 0x6c, 0x6c, 0xee,
8850x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x30, 0x18, 0x0c, 0x3e, 0x66,
8860x66, 0x66, 0x66, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8870x00, 0x7e, 0xdb, 0xdb, 0xdb, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
8880x00, 0x00, 0x00, 0x03, 0x06, 0x7e, 0xdb, 0xdb, 0xf3, 0x7e, 0x60, 0xc0,
8890x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c, 0x30, 0x60, 0x60, 0x7c, 0x60,
8900x60, 0x60, 0x30, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7c,
8910xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x00, 0x00, 0x00, 0x00,
8920x00, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x00, 0xfe, 0x00, 0x00, 0xfe, 0x00,
8930x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x7e, 0x18,
8940x18, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30,
8950x18, 0x0c, 0x06, 0x0c, 0x18, 0x30, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x00,
8960x00, 0x00, 0x00, 0x0c, 0x18, 0x30, 0x60, 0x30, 0x18, 0x0c, 0x00, 0x7e,
8970x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x1b, 0x1b, 0x1b, 0x18, 0x18,
8980x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
8990x18, 0x18, 0x18, 0x18, 0xd8, 0xd8, 0xd8, 0x70, 0x00, 0x00, 0x00, 0x00,
9000x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x7e, 0x00, 0x18, 0x18, 0x00,
9010x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0xdc, 0x00,
9020x76, 0xdc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x6c, 0x6c,
9030x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
9040x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00,
9050x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
9060x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x0c, 0x0c,
9070x0c, 0x0c, 0x0c, 0xec, 0x6c, 0x6c, 0x3c, 0x1c, 0x00, 0x00, 0x00, 0x00,
9080x00, 0xd8, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x00, 0x00, 0x00, 0x00, 0x00,
9090x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0xd8, 0x30, 0x60, 0xc8, 0xf8, 0x00,
9100x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
9110x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00,
9120x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
9130x00, 0x00, 0x00, 0x00,
914};
915
916void __init udbg_init_btext(void)
917{
918 /* If btext is enabled, we might have a BAT setup for early display,
919 * thus we do enable some very basic udbg output
920 */
921 udbg_putc = btext_drawchar;
922}