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Diffstat (limited to 'board/cogent/lcd.c')
| -rw-r--r-- | board/cogent/lcd.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/board/cogent/lcd.c b/board/cogent/lcd.c deleted file mode 100644 index 05ffc4d1ac..0000000000 --- a/board/cogent/lcd.c +++ /dev/null @@ -1,245 +0,0 @@ -/* most of this is taken from the file */ -/* hal/powerpc/cogent/current/src/hal_diag.c in the */ -/* Cygnus eCos source. Here is the copyright notice: */ -/* */ -/*============================================================================= */ -/* */ -/* hal_diag.c */ -/* */ -/* HAL diagnostic output code */ -/* */ -/*============================================================================= */ -/*####COPYRIGHTBEGIN#### */ -/* */ -/* ------------------------------------------- */ -/* The contents of this file are subject to the Cygnus eCos Public License */ -/* Version 1.0 (the "License"); you may not use this file except in */ -/* compliance with the License. You may obtain a copy of the License at */ -/* http://sourceware.cygnus.com/ecos */ -/* */ -/* Software distributed under the License is distributed on an "AS IS" */ -/* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the */ -/* License for the specific language governing rights and limitations under */ -/* the License. */ -/* */ -/* The Original Code is eCos - Embedded Cygnus Operating System, released */ -/* September 30, 1998. */ -/* */ -/* The Initial Developer of the Original Code is Cygnus. Portions created */ -/* by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved. */ -/* ------------------------------------------- */ -/* */ -/*####COPYRIGHTEND#### */ -/*============================================================================= */ -/*#####DESCRIPTIONBEGIN#### */ -/* */ -/* Author(s): nickg, jskov */ -/* Contributors: nickg, jskov */ -/* Date: 1999-03-23 */ -/* Purpose: HAL diagnostic output */ -/* Description: Implementations of HAL diagnostic output support. */ -/* */ -/*####DESCRIPTIONEND#### */ -/* */ -/*============================================================================= */ - -/*----------------------------------------------------------------------------- */ -/* Cogent board specific LCD code */ - -#include <common.h> -#include <stdarg.h> -#include "lcd.h" - -static char lines[2][LCD_LINE_LENGTH+1]; -static int curline; -static int linepos; -static int heartbeat_active; -/* make the next two strings exactly LCD_LINE_LENGTH (16) chars long */ -/* pad to the right with spaces if necessary */ -static char init_line0[LCD_LINE_LENGTH+1] = "U-Boot Cogent "; -static char init_line1[LCD_LINE_LENGTH+1] = "mjj, 11 Aug 2000"; - -static inline unsigned char -lcd_read_status(cma_mb_lcd *clp) -{ - /* read the Busy Status Register */ - return (cma_mb_reg_read(&clp->lcd_bsr)); -} - -static inline void -lcd_wait_not_busy(cma_mb_lcd *clp) -{ - /* - * wait for not busy - * Note: It seems that the LCD isn't quite ready to process commands - * when it clears the BUSY flag. Reading the status address an extra - * time seems to give it enough breathing room. - */ - - while (lcd_read_status(clp) & LCD_STAT_BUSY) - ; - - (void)lcd_read_status(clp); -} - -static inline void -lcd_write_command(cma_mb_lcd *clp, unsigned char cmd) -{ - lcd_wait_not_busy(clp); - - /* write the Command Register */ - cma_mb_reg_write(&clp->lcd_cmd, cmd); -} - -static inline void -lcd_write_data(cma_mb_lcd *clp, unsigned char data) -{ - lcd_wait_not_busy(clp); - - /* write the Current Character Register */ - cma_mb_reg_write(&clp->lcd_ccr, data); -} - -static inline void -lcd_dis(int addr, char *string) -{ - cma_mb_lcd *clp = (cma_mb_lcd *)CMA_MB_LCD_BASE; - int pos, linelen; - - linelen = LCD_LINE_LENGTH; - if (heartbeat_active && addr == LCD_LINE0) - linelen--; - - lcd_write_command(clp, LCD_CMD_ADD + addr); - for (pos = 0; *string != '\0' && pos < linelen; pos++) - lcd_write_data(clp, *string++); -} - -void -lcd_init(void) -{ - cma_mb_lcd *clp = (cma_mb_lcd *)CMA_MB_LCD_BASE; - int i; - - /* configure the lcd for 8 bits/char, 2 lines and 5x7 dot matrix */ - lcd_write_command(clp, LCD_CMD_MODE); - - /* turn the LCD display on */ - lcd_write_command(clp, LCD_CMD_DON); - - curline = 0; - linepos = 0; - - for (i = 0; i < LCD_LINE_LENGTH; i++) { - lines[0][i] = init_line0[i]; - lines[1][i] = init_line1[i]; - } - - lines[0][LCD_LINE_LENGTH] = lines[1][LCD_LINE_LENGTH] = 0; - - lcd_dis(LCD_LINE0, lines[0]); - lcd_dis(LCD_LINE1, lines[1]); - - printf("HD44780 2 line x %d char display\n", LCD_LINE_LENGTH); -} - -void -lcd_write_char(const char c) -{ - int i, linelen; - - /* ignore CR */ - if (c == '\r') - return; - - linelen = LCD_LINE_LENGTH; - if (heartbeat_active && curline == 0) - linelen--; - - if (c == '\n') { - lcd_dis(LCD_LINE0, &lines[curline^1][0]); - lcd_dis(LCD_LINE1, &lines[curline][0]); - - /* Do a line feed */ - curline ^= 1; - linelen = LCD_LINE_LENGTH; - if (heartbeat_active && curline == 0) - linelen--; - linepos = 0; - - for (i = 0; i < linelen; i++) - lines[curline][i] = ' '; - - return; - } - - /* Only allow to be output if there is room on the LCD line */ - if (linepos < linelen) - lines[curline][linepos++] = c; -} - -void -lcd_flush(void) -{ - lcd_dis(LCD_LINE1, &lines[curline][0]); -} - -void -lcd_write_string(const char *s) -{ - char *p; - - for (p = (char *)s; *p != '\0'; p++) - lcd_write_char(*p); -} - -void -lcd_printf(const char *fmt, ...) -{ - va_list args; - char buf[CONFIG_SYS_PBSIZE]; - - va_start(args, fmt); - (void)vsprintf(buf, fmt, args); - va_end(args); - - lcd_write_string(buf); -} - -void -lcd_heartbeat(void) -{ - cma_mb_lcd *clp = (cma_mb_lcd *)CMA_MB_LCD_BASE; -#if 0 - static char rotchars[] = { '|', '/', '-', '\\' }; -#else - /* HD44780 Rom Code A00 has no backslash */ - static char rotchars[] = { '|', '/', '-', '\315' }; -#endif - static int rotator_index = 0; - - heartbeat_active = 1; - - /* write the address */ - lcd_write_command(clp, LCD_CMD_ADD + LCD_LINE0 + (LCD_LINE_LENGTH - 1)); - - /* write the next char in the sequence */ - lcd_write_data(clp, rotchars[rotator_index]); - - if (++rotator_index >= (sizeof rotchars / sizeof rotchars[0])) - rotator_index = 0; -} - -#ifdef CONFIG_SHOW_ACTIVITY -void board_show_activity (ulong timestamp) -{ -#ifdef CONFIG_STATUS_LED - if ((timestamp % (CONFIG_SYS_HZ / 2)) == 0) - lcd_heartbeat (); -#endif -} - -void show_activity(int arg) -{ -} -#endif |
