doc: xen: Add Xen guest ARM64 board documentation
[platform/kernel/u-boot.git] / common / lcd_console.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2001-2015
4  * DENX Software Engineering -- wd@denx.de
5  * Compulab Ltd - http://compulab.co.il/
6  * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
7  */
8
9 #include <common.h>
10 #include <command.h>
11 #include <lcd.h>
12 #include <log.h>
13 #include <serial.h>
14 #include <video_font.h>         /* Get font data, width and height */
15 #if defined(CONFIG_LCD_LOGO)
16 #include <bmp_logo.h>
17 #endif
18
19 static struct console_t cons;
20
21 void lcd_set_col(short col)
22 {
23         cons.curr_col = col;
24 }
25
26 void lcd_set_row(short row)
27 {
28         cons.curr_row = row;
29 }
30
31 void lcd_position_cursor(unsigned col, unsigned row)
32 {
33         cons.curr_col = min_t(short, col, cons.cols - 1);
34         cons.curr_row = min_t(short, row, cons.rows - 1);
35 }
36
37 int lcd_get_screen_rows(void)
38 {
39         return cons.rows;
40 }
41
42 int lcd_get_screen_columns(void)
43 {
44         return cons.cols;
45 }
46
47 static void lcd_putc_xy0(struct console_t *pcons, ushort x, ushort y, char c)
48 {
49         int fg_color = lcd_getfgcolor();
50         int bg_color = lcd_getbgcolor();
51         int i, row;
52         fbptr_t *dst = (fbptr_t *)pcons->fbbase +
53                                   y * pcons->lcdsizex +
54                                   x;
55
56         for (row = 0; row < VIDEO_FONT_HEIGHT; row++) {
57                 uchar bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
58                 for (i = 0; i < VIDEO_FONT_WIDTH; ++i) {
59                         *dst++ = (bits & 0x80) ? fg_color : bg_color;
60                         bits <<= 1;
61                 }
62                 dst += (pcons->lcdsizex - VIDEO_FONT_WIDTH);
63         }
64 }
65
66 static inline void console_setrow0(struct console_t *pcons, u32 row, int clr)
67 {
68         int i;
69         fbptr_t *dst = (fbptr_t *)pcons->fbbase +
70                                   row * VIDEO_FONT_HEIGHT *
71                                   pcons->lcdsizex;
72
73         for (i = 0; i < (VIDEO_FONT_HEIGHT * pcons->lcdsizex); i++)
74                 *dst++ = clr;
75 }
76
77 static inline void console_moverow0(struct console_t *pcons,
78                                     u32 rowdst, u32 rowsrc)
79 {
80         int i;
81         fbptr_t *dst = (fbptr_t *)pcons->fbbase +
82                                   rowdst * VIDEO_FONT_HEIGHT *
83                                   pcons->lcdsizex;
84
85         fbptr_t *src = (fbptr_t *)pcons->fbbase +
86                                   rowsrc * VIDEO_FONT_HEIGHT *
87                                   pcons->lcdsizex;
88
89         for (i = 0; i < (VIDEO_FONT_HEIGHT * pcons->lcdsizex); i++)
90                 *dst++ = *src++;
91 }
92
93 static inline void console_back(void)
94 {
95         if (--cons.curr_col < 0) {
96                 cons.curr_col = cons.cols - 1;
97                 if (--cons.curr_row < 0)
98                         cons.curr_row = 0;
99         }
100
101         cons.fp_putc_xy(&cons,
102                         cons.curr_col * VIDEO_FONT_WIDTH,
103                         cons.curr_row * VIDEO_FONT_HEIGHT, ' ');
104 }
105
106 static inline void console_newline(void)
107 {
108         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
109         int bg_color = lcd_getbgcolor();
110         int i;
111
112         cons.curr_col = 0;
113
114         /* Check if we need to scroll the terminal */
115         if (++cons.curr_row >= cons.rows) {
116                 for (i = 0; i < cons.rows-rows; i++)
117                         cons.fp_console_moverow(&cons, i, i+rows);
118                 for (i = 0; i < rows; i++)
119                         cons.fp_console_setrow(&cons, cons.rows-i-1, bg_color);
120                 cons.curr_row -= rows;
121         }
122         lcd_sync();
123 }
124
125 void console_calc_rowcol(struct console_t *pcons, u32 sizex, u32 sizey)
126 {
127         pcons->cols = sizex / VIDEO_FONT_WIDTH;
128 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
129         pcons->rows = (pcons->lcdsizey - BMP_LOGO_HEIGHT);
130         pcons->rows /= VIDEO_FONT_HEIGHT;
131 #else
132         pcons->rows = sizey / VIDEO_FONT_HEIGHT;
133 #endif
134 }
135
136 void __weak lcd_init_console_rot(struct console_t *pcons)
137 {
138         return;
139 }
140
141 void lcd_init_console(void *address, int vl_cols, int vl_rows, int vl_rot)
142 {
143         memset(&cons, 0, sizeof(cons));
144         cons.fbbase = address;
145
146         cons.lcdsizex = vl_cols;
147         cons.lcdsizey = vl_rows;
148         cons.lcdrot = vl_rot;
149
150         cons.fp_putc_xy = &lcd_putc_xy0;
151         cons.fp_console_moverow = &console_moverow0;
152         cons.fp_console_setrow = &console_setrow0;
153         console_calc_rowcol(&cons, cons.lcdsizex, cons.lcdsizey);
154
155         lcd_init_console_rot(&cons);
156
157         debug("lcd_console: have %d/%d col/rws on scr %dx%d (%d deg rotated)\n",
158               cons.cols, cons.rows, cons.lcdsizex, cons.lcdsizey, vl_rot);
159 }
160
161 void lcd_putc(const char c)
162 {
163         if (!lcd_is_enabled) {
164                 serial_putc(c);
165
166                 return;
167         }
168
169         switch (c) {
170         case '\r':
171                 cons.curr_col = 0;
172                 return;
173         case '\n':
174                 console_newline();
175
176                 return;
177         case '\t':      /* Tab (8 chars alignment) */
178                 cons.curr_col +=  8;
179                 cons.curr_col &= ~7;
180
181                 if (cons.curr_col >= cons.cols)
182                         console_newline();
183
184                 return;
185         case '\b':
186                 console_back();
187
188                 return;
189         default:
190                 cons.fp_putc_xy(&cons,
191                                 cons.curr_col * VIDEO_FONT_WIDTH,
192                                 cons.curr_row * VIDEO_FONT_HEIGHT, c);
193                 if (++cons.curr_col >= cons.cols)
194                         console_newline();
195         }
196 }
197
198 void lcd_puts(const char *s)
199 {
200         if (!lcd_is_enabled) {
201                 serial_puts(s);
202
203                 return;
204         }
205
206         while (*s)
207                 lcd_putc(*s++);
208
209         lcd_sync();
210 }
211
212 void lcd_printf(const char *fmt, ...)
213 {
214         va_list args;
215         char buf[CONFIG_SYS_PBSIZE];
216
217         va_start(args, fmt);
218         vsprintf(buf, fmt, args);
219         va_end(args);
220
221         lcd_puts(buf);
222 }
223
224 static int do_lcd_setcursor(struct cmd_tbl *cmdtp, int flag, int argc,
225                             char *const argv[])
226 {
227         unsigned int col, row;
228
229         if (argc != 3)
230                 return CMD_RET_USAGE;
231
232         col = simple_strtoul(argv[1], NULL, 10);
233         row = simple_strtoul(argv[2], NULL, 10);
234         lcd_position_cursor(col, row);
235
236         return 0;
237 }
238
239 static int do_lcd_puts(struct cmd_tbl *cmdtp, int flag, int argc,
240                        char *const argv[])
241 {
242         if (argc != 2)
243                 return CMD_RET_USAGE;
244
245         lcd_puts(argv[1]);
246
247         return 0;
248 }
249
250 U_BOOT_CMD(
251         setcurs, 3,     1,      do_lcd_setcursor,
252         "set cursor position within screen",
253         "    <col> <row> in character"
254 );
255
256 U_BOOT_CMD(
257         lcdputs, 2,     1,      do_lcd_puts,
258         "print string on lcd-framebuffer",
259         "    <string>"
260 );
261