[PATCH] Add support for AMCC Taishan PPC440GX eval board

Signed-off-by: Stefan Roese <sr@denx.de>

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
index 0000000..aebddb4
--- /dev/null
+++ 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
+}
+
+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
+
+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