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-rw-r--r--board/amcc/taishan/lcd.c380
1 files changed, 380 insertions, 0 deletions
diff --git a/board/amcc/taishan/lcd.c b/board/amcc/taishan/lcd.c
new file mode 100644
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+++ b/board/amcc/taishan/lcd.c
@@ -0,0 +1,380 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * 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 <i2c.h>
+#include <miiphy.h>
+
+#ifdef CONFIG_TAISHAN
+
+#define LCD_DELAY_NORMAL_US 100
+#define LCD_DELAY_NORMAL_MS 2
+#define LCD_CMD_ADDR ((volatile char *)(CFG_EBC2_LCM_BASE))
+#define LCD_DATA_ADDR ((volatile char *)(CFG_EBC2_LCM_BASE+1))
+#define LCD_BLK_CTRL ((volatile char *)(CFG_EBC1_FPGA_BASE+0x2))
+
+#define mdelay(t) ({unsigned long msec=(t); while (msec--) { udelay(1000);}})
+
+static int g_lcd_init_b = 0;
+static char *amcc_logo = " AMCC TAISHAN 440GX EvalBoard";
+static char addr_flag = 0x80;
+
+static void lcd_bl_ctrl(char val)
+{
+ char cpld_val;
+
+ cpld_val = *LCD_BLK_CTRL;
+ *LCD_BLK_CTRL = val | cpld_val;
+}
+
+static void lcd_putc(char val)
+{
+ int i = 100;
+ char addr;
+
+ while (i--) {
+ if ((*LCD_CMD_ADDR & 0x80) != 0x80) { /*BF = 1 ? */
+ udelay(LCD_DELAY_NORMAL_US);
+ break;
+ }
+ udelay(LCD_DELAY_NORMAL_US);
+ }
+
+ if (*LCD_CMD_ADDR & 0x80) {
+ printf("LCD is busy\n");
+ return;
+ }
+
+ addr = *LCD_CMD_ADDR;
+ udelay(LCD_DELAY_NORMAL_US);
+ if ((addr != 0) && (addr % 0x10 == 0)) {
+ addr_flag ^= 0x40;
+ *LCD_CMD_ADDR = addr_flag;
+ }
+
+ udelay(LCD_DELAY_NORMAL_US);
+ *LCD_DATA_ADDR = val;
+ udelay(LCD_DELAY_NORMAL_US);
+}
+
+static void lcd_puts(char *s)
+{
+ char *p = s;
+ int i = 100;
+
+ while (i--) {
+ if ((*LCD_CMD_ADDR & 0x80) != 0x80) { /*BF = 1 ? */
+ udelay(LCD_DELAY_NORMAL_US);
+ break;
+ }
+ udelay(LCD_DELAY_NORMAL_US);
+ }
+
+ if (*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 ((*LCD_CMD_ADDR & 0x80) != 0x80) { /*BF = 1 ? */
+ udelay(LCD_DELAY_NORMAL_US);
+ break;
+ }
+ udelay(LCD_DELAY_NORMAL_US);
+ }
+
+ if (*LCD_CMD_ADDR & 0x80) {
+ printf("LCD is busy\n");
+ return;
+ }
+
+ *LCD_CMD_ADDR = 0x80;
+ while (*p)
+ lcd_putc(*p++);
+}
+
+int lcd_init(void)
+{
+ if (g_lcd_init_b == 0) {
+ puts("LCD: ");
+ mdelay(100); /* Waiting for the LCD initialize */
+
+ *LCD_CMD_ADDR = 0x38; /*set function:8-bit,2-line,5x7 font type */
+ udelay(LCD_DELAY_NORMAL_US);
+
+ *LCD_CMD_ADDR = 0x0f; /*set display on,cursor on,blink on */
+ udelay(LCD_DELAY_NORMAL_US);
+
+ *LCD_CMD_ADDR = 0x01; /*display clear */
+ mdelay(LCD_DELAY_NORMAL_MS);
+
+ *LCD_CMD_ADDR = 0x06; /*set entry */
+ udelay(LCD_DELAY_NORMAL_US);
+
+ lcd_bl_ctrl(0x02);
+ lcd_put_logo();
+
+ puts(" ready\n");
+ g_lcd_init_b = 1;
+ }
+
+ return 0;
+}
+
+static int do_lcd_test(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+ lcd_init();
+ return 0;
+}
+
+static int do_lcd_clear(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+ *LCD_CMD_ADDR = 0x01;
+ mdelay(LCD_DELAY_NORMAL_MS);
+ 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 = *LCD_CMD_ADDR;
+ udelay(LCD_DELAY_NORMAL_US);
+ if (dir == 0x0) {
+ if (addr_flag == 0x80) {
+ if (count >= (cur_addr & 0xf)) {
+ *LCD_CMD_ADDR = 0x80;
+ udelay(LCD_DELAY_NORMAL_US);
+ count = 0;
+ }
+ } else {
+ if (count >= ((cur_addr & 0x0f) + 0x0f)) {
+ *LCD_CMD_ADDR = 0x80;
+ addr_flag = 0x80;
+ udelay(LCD_DELAY_NORMAL_US);
+ count = 0x0;
+ } else if (count >= (cur_addr & 0xf)) {
+ count -= cur_addr & 0xf;
+ *LCD_CMD_ADDR = 0x80 | 0xf;
+ addr_flag = 0x80;
+ udelay(LCD_DELAY_NORMAL_US);
+ }
+ }
+ } else {
+ if (addr_flag == 0x80) {
+ if (count >= (0x1f - (cur_addr & 0xf))) {
+ count = 0x0;
+ addr_flag = 0xc0;
+ *LCD_CMD_ADDR = 0xc0 | 0xf;
+ udelay(LCD_DELAY_NORMAL_US);
+ } else if ((count + (cur_addr & 0xf)) >= 0x0f) {
+ count = count + (cur_addr & 0xf) - 0x0f;
+ addr_flag = 0xc0;
+ *LCD_CMD_ADDR = 0xc0;
+ udelay(LCD_DELAY_NORMAL_US);
+ }
+ } else if ((count + (cur_addr & 0xf)) >= 0x0f) {
+ count = 0x0;
+ *LCD_CMD_ADDR = 0xc0 | 0xf;
+ udelay(LCD_DELAY_NORMAL_US);
+ }
+ }
+
+ while (count--) {
+ if (dir == 0) {
+ *LCD_CMD_ADDR = 0x10;
+ } else {
+ *LCD_CMD_ADDR = 0x14;
+ }
+ udelay(LCD_DELAY_NORMAL_US);
+ }
+
+ return 0;
+}
+
+U_BOOT_CMD(lcd_test, 1, 1, do_lcd_test, "lcd_test - lcd test display\n", NULL);
+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");
+
+#if 0 /* test-only */
+void set_phy_loopback_mode(void)
+{
+ char devemac2[32];
+ char devemac3[32];
+
+ sprintf(devemac2, "%s2", CONFIG_EMAC_DEV_NAME);
+ sprintf(devemac3, "%s3", CONFIG_EMAC_DEV_NAME);
+
+#if 0
+ unsigned short reg_short;
+
+ miiphy_read(devemac2, 0x1, 1, &reg_short);
+ if (reg_short & 0x04) {
+ /*
+ * printf("EMAC2 link up,do nothing\n");
+ */
+ } else {
+ udelay(1000);
+ miiphy_write(devemac2, 0x1, 0, 0x6000);
+ udelay(1000);
+ miiphy_read(devemac2, 0x1, 0, &reg_short);
+ if (reg_short != 0x6000) {
+ printf
+ ("\nEMAC2 error set LOOPBACK mode error,reg2[0]=%x\n",
+ reg_short);
+ }
+ }
+
+ miiphy_read(devemac3, 0x3, 1, &reg_short);
+ if (reg_short & 0x04) {
+ /*
+ * printf("EMAC3 link up,do nothing\n");
+ */
+ } else {
+ udelay(1000);
+ miiphy_write(devemac3, 0x3, 0, 0x6000);
+ udelay(1000);
+ miiphy_read(devemac3, 0x3, 0, &reg_short);
+ if (reg_short != 0x6000) {
+ printf
+ ("\nEMAC3 error set LOOPBACK mode error,reg2[0]=%x\n",
+ reg_short);
+ }
+ }
+#else
+ /* Set PHY as LOOPBACK MODE, for Linux emac initializing */
+ miiphy_write(devemac2, CONFIG_PHY2_ADDR, 0, 0x6000);
+ udelay(1000);
+ miiphy_write(devemac3, CONFIG_PHY3_ADDR, 0, 0x6000);
+ udelay(1000);
+#endif /* 0 */
+}
+
+void set_phy_normal_mode(void)
+{
+ char devemac2[32];
+ char devemac3[32];
+ unsigned short reg_short;
+
+ sprintf(devemac2, "%s2", CONFIG_EMAC_DEV_NAME);
+ sprintf(devemac3, "%s3", CONFIG_EMAC_DEV_NAME);
+
+ /* Set phy of EMAC2 */
+ miiphy_read(devemac2, CONFIG_PHY2_ADDR, 0x16, &reg_short);
+ reg_short &= ~(0x7);
+ reg_short |= 0x6; /* RGMII DLL Delay */
+ miiphy_write(devemac2, CONFIG_PHY2_ADDR, 0x16, reg_short);
+
+ miiphy_read(devemac2, CONFIG_PHY2_ADDR, 0x17, &reg_short);
+ reg_short &= ~(0x40);
+ miiphy_write(devemac2, CONFIG_PHY2_ADDR, 0x17, reg_short);
+
+ miiphy_write(devemac2, CONFIG_PHY2_ADDR, 0x1c, 0x74f0);
+
+ /* Set phy of EMAC3 */
+ miiphy_read(devemac3, CONFIG_PHY3_ADDR, 0x16, &reg_short);
+ reg_short &= ~(0x7);
+ reg_short |= 0x6; /* RGMII DLL Delay */
+ miiphy_write(devemac3, CONFIG_PHY3_ADDR, 0x16, reg_short);
+
+ miiphy_read(devemac3, CONFIG_PHY3_ADDR, 0x17, &reg_short);
+ reg_short &= ~(0x40);
+ miiphy_write(devemac3, CONFIG_PHY3_ADDR, 0x17, reg_short);
+
+ miiphy_write(devemac3, CONFIG_PHY3_ADDR, 0x1c, 0x74f0);
+}
+#endif /* 0 - test only */
+
+static int do_led_test_off(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+ volatile unsigned int *GpioOr =
+ (volatile unsigned int *)(CFG_PERIPHERAL_BASE + 0x700);
+ *GpioOr |= 0x00300000;
+ return 0;
+}
+
+static int do_led_test_on(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+ volatile unsigned int *GpioOr =
+ (volatile unsigned int *)(CFG_PERIPHERAL_BASE + 0x700);
+ *GpioOr &= ~0x00300000;
+ return 0;
+}
+
+U_BOOT_CMD(ledon, 1, 1, do_led_test_on,
+ "ledon - led test light on\n", NULL);
+
+U_BOOT_CMD(ledoff, 1, 1, do_led_test_off,
+ "ledoff - led test light off\n", NULL);
+#endif
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