lcd.c revision 1.2.2.2
1 1.2.2.2 mjf /* $NetBSD: lcd.c,v 1.2.2.2 2008/06/02 13:22:00 mjf Exp $ */ 2 1.2.2.2 mjf 3 1.2.2.2 mjf /*- 4 1.2.2.2 mjf * Copyright (c) 2008 Izumi Tsutsui. All rights reserved. 5 1.2.2.2 mjf * 6 1.2.2.2 mjf * Redistribution and use in source and binary forms, with or without 7 1.2.2.2 mjf * modification, are permitted provided that the following conditions 8 1.2.2.2 mjf * are met: 9 1.2.2.2 mjf * 1. Redistributions of source code must retain the above copyright 10 1.2.2.2 mjf * notice, this list of conditions and the following disclaimer. 11 1.2.2.2 mjf * 2. Redistributions in binary form must reproduce the above copyright 12 1.2.2.2 mjf * notice, this list of conditions and the following disclaimer in the 13 1.2.2.2 mjf * documentation and/or other materials provided with the distribution. 14 1.2.2.2 mjf * 15 1.2.2.2 mjf * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 1.2.2.2 mjf * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 1.2.2.2 mjf * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 1.2.2.2 mjf * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 1.2.2.2 mjf * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 1.2.2.2 mjf * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 1.2.2.2 mjf * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 1.2.2.2 mjf * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 1.2.2.2 mjf * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 1.2.2.2 mjf * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 1.2.2.2 mjf */ 26 1.2.2.2 mjf 27 1.2.2.2 mjf #include <lib/libsa/stand.h> 28 1.2.2.2 mjf #include <lib/libkern/libkern.h> 29 1.2.2.2 mjf 30 1.2.2.2 mjf #include <dev/ic/hd44780reg.h> 31 1.2.2.2 mjf 32 1.2.2.2 mjf #include <machine/cpu.h> 33 1.2.2.2 mjf 34 1.2.2.2 mjf #include "boot.h" 35 1.2.2.2 mjf 36 1.2.2.2 mjf #define IREG 0x00 37 1.2.2.2 mjf #define DREG 0x10 38 1.2.2.2 mjf 39 1.2.2.2 mjf #if 0 40 1.2.2.2 mjf #define CSR_READ(base, reg) \ 41 1.2.2.2 mjf (((*(volatile uint32_t *)((base) + (reg))) >> 24), delay(10)) 42 1.2.2.2 mjf #endif 43 1.2.2.2 mjf 44 1.2.2.2 mjf #define CSR_WRITE(base, reg, val) \ 45 1.2.2.2 mjf do { \ 46 1.2.2.2 mjf *(volatile uint32_t *)((base) + (reg)) = ((val) << 24); \ 47 1.2.2.2 mjf delay(10); \ 48 1.2.2.2 mjf } while (/* CONSTCOND */ 0) 49 1.2.2.2 mjf 50 1.2.2.2 mjf #define NCOLS 16 51 1.2.2.2 mjf 52 1.2.2.2 mjf struct lcd_message { 53 1.2.2.2 mjf char row1[NCOLS]; 54 1.2.2.2 mjf char row2[NCOLS]; 55 1.2.2.2 mjf }; 56 1.2.2.2 mjf 57 1.2.2.2 mjf static uint32_t lcd_base; 58 1.2.2.2 mjf static const struct lcd_message banner_message = { 59 1.2.2.2 mjf "NetBSD/cobalt ", 60 1.2.2.2 mjf "Bootloader " 61 1.2.2.2 mjf }; 62 1.2.2.2 mjf static const struct lcd_message failed_message = { 63 1.2.2.2 mjf "Boot failed! ", 64 1.2.2.2 mjf "Rebooting... " 65 1.2.2.2 mjf }; 66 1.2.2.2 mjf static struct lcd_message loadfile_message = { 67 1.2.2.2 mjf "Loading: ", 68 1.2.2.2 mjf " " 69 1.2.2.2 mjf }; 70 1.2.2.2 mjf 71 1.2.2.2 mjf static void lcd_puts(const struct lcd_message *); 72 1.2.2.2 mjf 73 1.2.2.2 mjf void 74 1.2.2.2 mjf lcd_init(void) 75 1.2.2.2 mjf { 76 1.2.2.2 mjf 77 1.2.2.2 mjf lcd_base = MIPS_PHYS_TO_KSEG1(LCD_BASE); 78 1.2.2.2 mjf } 79 1.2.2.2 mjf 80 1.2.2.2 mjf void 81 1.2.2.2 mjf lcd_banner(void) 82 1.2.2.2 mjf { 83 1.2.2.2 mjf 84 1.2.2.2 mjf lcd_puts(&banner_message); 85 1.2.2.2 mjf } 86 1.2.2.2 mjf 87 1.2.2.2 mjf void 88 1.2.2.2 mjf lcd_loadfile(const char *file) 89 1.2.2.2 mjf { 90 1.2.2.2 mjf 91 1.2.2.2 mjf memcpy(loadfile_message.row2, file, min(NCOLS, strlen(file))); 92 1.2.2.2 mjf 93 1.2.2.2 mjf lcd_puts(&loadfile_message); 94 1.2.2.2 mjf } 95 1.2.2.2 mjf 96 1.2.2.2 mjf void 97 1.2.2.2 mjf lcd_failed(void) 98 1.2.2.2 mjf { 99 1.2.2.2 mjf 100 1.2.2.2 mjf lcd_puts(&failed_message); 101 1.2.2.2 mjf } 102 1.2.2.2 mjf 103 1.2.2.2 mjf static void 104 1.2.2.2 mjf lcd_puts(const struct lcd_message *message) 105 1.2.2.2 mjf { 106 1.2.2.2 mjf int i; 107 1.2.2.2 mjf 108 1.2.2.2 mjf for (i = 0; i < NCOLS; i++) { 109 1.2.2.2 mjf CSR_WRITE(lcd_base, IREG, cmd_ddramset(HD_ROW1_ADDR + i)); 110 1.2.2.2 mjf CSR_WRITE(lcd_base, DREG, message->row1[i]); 111 1.2.2.2 mjf } 112 1.2.2.2 mjf for (i = 0; i < NCOLS; i++) { 113 1.2.2.2 mjf CSR_WRITE(lcd_base, IREG, cmd_ddramset(HD_ROW2_ADDR + i)); 114 1.2.2.2 mjf CSR_WRITE(lcd_base, DREG, message->row2[i]); 115 1.2.2.2 mjf } 116 1.2.2.2 mjf } 117
Indexes created Thu Oct 02 14:10:14 GMT 2025