mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 14:23:00 +00:00
258 lines
5.2 KiB
C
258 lines
5.2 KiB
C
|
/*
|
||
|
* See file CREDITS for list of people who contributed to this
|
||
|
* project.
|
||
|
*
|
||
|
* This program is free software; you can redistribute it and/or
|
||
|
* modify it under the terms of the GNU General Public License as
|
||
|
* published by the Free Software Foundation; either version 2 of
|
||
|
* the License, or (at your option) any later version.
|
||
|
*
|
||
|
* This program is distributed in the hope that it will be useful,
|
||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
* GNU General Public License for more details.
|
||
|
*
|
||
|
* You should have received a copy of the GNU General Public License
|
||
|
* along with this program; if not, write to the Free Software
|
||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||
|
* MA 02111-1307 USA
|
||
|
*/
|
||
|
|
||
|
#include <config.h>
|
||
|
#include <common.h>
|
||
|
#include <command.h>
|
||
|
#include <asm/io.h>
|
||
|
#include <asm/gpio.h>
|
||
|
|
||
|
#define LCD_CMD_ADDR 0x50100002
|
||
|
#define LCD_DATA_ADDR 0x50100003
|
||
|
#define LCD_BLK_CTRL CPLD_REG1_ADDR
|
||
|
|
||
|
static char *amcc_logo = "AMCC 405EP TAIHU EVALUATION KIT";
|
||
|
static int addr_flag = 0x80;
|
||
|
|
||
|
static void lcd_bl_ctrl(char val)
|
||
|
{
|
||
|
out_8((u8 *) LCD_BLK_CTRL, in_8((u8 *) LCD_BLK_CTRL) | val);
|
||
|
}
|
||
|
|
||
|
static void lcd_putc(int val)
|
||
|
{
|
||
|
int i = 100;
|
||
|
char addr;
|
||
|
|
||
|
while (i--) {
|
||
|
if ((in_8((u8 *) LCD_CMD_ADDR) & 0x80) != 0x80) { /*BF = 1 ?*/
|
||
|
udelay(50);
|
||
|
break;
|
||
|
}
|
||
|
udelay(50);
|
||
|
}
|
||
|
|
||
|
if (in_8((u8 *) LCD_CMD_ADDR) & 0x80) {
|
||
|
printf("LCD is busy\n");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
addr = in_8((u8 *) LCD_CMD_ADDR);
|
||
|
udelay(50);
|
||
|
if ((addr != 0) && (addr % 0x10 == 0)) {
|
||
|
addr_flag ^= 0x40;
|
||
|
out_8((u8 *) LCD_CMD_ADDR, addr_flag);
|
||
|
}
|
||
|
|
||
|
udelay(50);
|
||
|
out_8((u8 *) LCD_DATA_ADDR, val);
|
||
|
udelay(50);
|
||
|
}
|
||
|
|
||
|
static void lcd_puts(char *s)
|
||
|
{
|
||
|
char *p = s;
|
||
|
int i = 100;
|
||
|
|
||
|
while (i--) {
|
||
|
if ((in_8((u8 *) LCD_CMD_ADDR) & 0x80) != 0x80) { /*BF = 1 ?*/
|
||
|
udelay(50);
|
||
|
break;
|
||
|
}
|
||
|
udelay(50);
|
||
|
}
|
||
|
|
||
|
if (in_8((u8 *) LCD_CMD_ADDR) & 0x80) {
|
||
|
printf("LCD is busy\n");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
while (*p)
|
||
|
lcd_putc(*p++);
|
||
|
}
|
||
|
|
||
|
static void lcd_put_logo(void)
|
||
|
{
|
||
|
int i = 100;
|
||
|
char *p = amcc_logo;
|
||
|
|
||
|
while (i--) {
|
||
|
if ((in_8((u8 *) LCD_CMD_ADDR) & 0x80) != 0x80) { /*BF = 1 ?*/
|
||
|
udelay(50);
|
||
|
break;
|
||
|
}
|
||
|
udelay(50);
|
||
|
}
|
||
|
|
||
|
if (in_8((u8 *) LCD_CMD_ADDR) & 0x80) {
|
||
|
printf("LCD is busy\n");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x80);
|
||
|
while (*p)
|
||
|
lcd_putc(*p++);
|
||
|
}
|
||
|
|
||
|
int lcd_init(void)
|
||
|
{
|
||
|
puts("LCD: ");
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x38); /* set function:8-bit,2-line,5x7 font type */
|
||
|
udelay(50);
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x0f); /* set display on,cursor on,blink on */
|
||
|
udelay(50);
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x01); /* display clear */
|
||
|
udelay(2000);
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x06); /* set entry */
|
||
|
udelay(50);
|
||
|
lcd_bl_ctrl(0x02); /* set backlight on */
|
||
|
lcd_put_logo();
|
||
|
puts("ready\n");
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int do_lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
|
||
|
{
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x01);
|
||
|
udelay(2000);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int do_lcd_puts (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
|
||
|
{
|
||
|
if (argc < 2) {
|
||
|
printf("%s", cmdtp->usage);
|
||
|
return 1;
|
||
|
}
|
||
|
lcd_puts(argv[1]);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int do_lcd_putc (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
|
||
|
{
|
||
|
if (argc < 2) {
|
||
|
printf("%s", cmdtp->usage);
|
||
|
return 1;
|
||
|
}
|
||
|
lcd_putc((char)argv[1][0]);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int do_lcd_cur (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
|
||
|
{
|
||
|
ulong count;
|
||
|
ulong dir;
|
||
|
char cur_addr;
|
||
|
|
||
|
if (argc < 3) {
|
||
|
printf("%s", cmdtp->usage);
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
count = simple_strtoul(argv[1], NULL, 16);
|
||
|
if (count > 31) {
|
||
|
printf("unable to shift > 0x20\n");
|
||
|
count = 0;
|
||
|
}
|
||
|
|
||
|
dir = simple_strtoul(argv[2], NULL, 16);
|
||
|
cur_addr = in_8((u8 *) LCD_CMD_ADDR);
|
||
|
udelay(50);
|
||
|
|
||
|
if (dir == 0x0) {
|
||
|
if (addr_flag == 0x80) {
|
||
|
if (count >= (cur_addr & 0xf)) {
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x80);
|
||
|
udelay(50);
|
||
|
count = 0;
|
||
|
}
|
||
|
} else {
|
||
|
if (count >= ((cur_addr & 0x0f) + 0x0f)) {
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x80);
|
||
|
addr_flag = 0x80;
|
||
|
udelay(50);
|
||
|
count = 0x0;
|
||
|
} else if (count >= ( cur_addr & 0xf)) {
|
||
|
count -= cur_addr & 0xf ;
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x80 | 0xf);
|
||
|
addr_flag = 0x80;
|
||
|
udelay(50);
|
||
|
}
|
||
|
}
|
||
|
} else {
|
||
|
if (addr_flag == 0x80) {
|
||
|
if (count >= (0x1f - (cur_addr & 0xf))) {
|
||
|
count = 0x0;
|
||
|
addr_flag = 0xc0;
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0xc0 | 0xf);
|
||
|
udelay(50);
|
||
|
} else if ((count + (cur_addr & 0xf ))>= 0x0f) {
|
||
|
count = count + (cur_addr & 0xf) - 0x0f;
|
||
|
addr_flag = 0xc0;
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0xc0);
|
||
|
udelay(50);
|
||
|
}
|
||
|
} else if ((count + (cur_addr & 0xf )) >= 0x0f) {
|
||
|
count = 0x0;
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0xC0 | 0x0F);
|
||
|
udelay(50);
|
||
|
}
|
||
|
}
|
||
|
while (count--) {
|
||
|
if (dir == 0)
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x10);
|
||
|
else
|
||
|
out_8((u8 *) LCD_CMD_ADDR, 0x14);
|
||
|
udelay(50);
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
U_BOOT_CMD(
|
||
|
lcd_cls, 1, 1, do_lcd_clear,
|
||
|
"lcd_cls - lcd clear display\n",
|
||
|
NULL
|
||
|
);
|
||
|
|
||
|
U_BOOT_CMD(
|
||
|
lcd_puts, 2, 1, do_lcd_puts,
|
||
|
"lcd_puts - display string on lcd\n",
|
||
|
"<string> - <string> to be displayed\n"
|
||
|
);
|
||
|
|
||
|
U_BOOT_CMD(
|
||
|
lcd_putc, 2, 1, do_lcd_putc,
|
||
|
"lcd_putc - display char on lcd\n",
|
||
|
"<char> - <char> to be displayed\n"
|
||
|
);
|
||
|
|
||
|
U_BOOT_CMD(
|
||
|
lcd_cur, 3, 1, do_lcd_cur,
|
||
|
"lcd_cur - shift cursor on lcd\n",
|
||
|
"<count> <dir> - shift cursor on lcd <count> times, direction is <dir> \n"
|
||
|
" <count> - 0..31\n"
|
||
|
" <dir> - 0=backward 1=forward\n"
|
||
|
);
|