Add splashscreen support for MCC200 board.

CHANGELOG

@@ -2,6 +2,8 @@
 Changes since U-Boot 1.1.4:
 ======================================================================
 
+* Add splashscreen support for MCC200 board.
+
 * Make the serial driver framework work with CONFIG_SERIAL_MULTI
   enabled
 

board/mcc200/Makefile

@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= lib$(BOARD).a
 
-OBJS	:= $(BOARD).o
+OBJS	:= $(BOARD).o lcd.o
 
 $(LIB):	$(OBJS) $(SOBJS)
 	$(AR) crv $@ $(OBJS)

board/mcc200/lcd.c

@@ -0,0 +1,190 @@
+/*
+ * (C) Copyright 2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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 <common.h>
+#include <lcd.h>
+#include <mpc5xxx.h>
+
+#ifdef CONFIG_LCD
+
+#define SWAPPED_LCD
+/*
+ *  The name of the device used for communication
+ * with the PSoC.
+ */
+#define PSOC_PSC	MPC5XXX_PSC2
+#define PSOC_BAUD	500000UL
+
+#define RTS_ASSERT	1
+#define RTS_NEGATE	0
+#define CTS_ASSERT	1
+#define CTS_NEGATE	0
+
+/*
+ * Dimensions in pixels
+ */
+#define LCD_WIDTH	160
+#define LCD_HEIGHT	100
+
+/*
+ * Dimensions in bytes
+ */
+#define LCD_BUF_SIZE	((LCD_WIDTH*LCD_HEIGHT)>>3)
+
+#if LCD_BPP != LCD_MONOCHROME
+#error "MCC200 support only monochrome displays (1 bpp)!"
+#endif
+
+#define PSOC_RETRIES	10	/* each of PSOC_WAIT_TIME */
+#define PSOC_WAIT_TIME	10	/* usec */
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * LCD information
+ */
+vidinfo_t panel_info = {
+	LCD_WIDTH, LCD_HEIGHT, LCD_BPP
+};
+
+int lcd_line_length;
+
+int lcd_color_fg;
+int lcd_color_bg;
+
+/*
+ * Frame buffer memory information
+ */
+void *lcd_base;			/* Start of framebuffer memory  */
+void *lcd_console_address;	/* Start of console buffer      */
+
+short console_col = 0;
+short console_row = 0;
+
+/*
+ *  The device we use to communicate with PSoC
+ */
+int serial_inited = 0;
+
+/*
+ * Exported functions
+ */
+void lcd_initcolregs (void);
+void lcd_ctrl_init (void *lcdbase);
+void lcd_enable (void);
+
+/*
+ *  Imported functions to support the PSoC protocol
+ */
+extern int serial_init_dev (unsigned long dev_base);
+extern void serial_setrts_dev (unsigned long dev_base, int s);
+extern int serial_getcts_dev (unsigned long dev_base);
+extern void serial_putc_raw_dev(unsigned long dev_base, const char c);
+
+/*
+ *  Just stubs for our driver, needed for compiling compabilty with
+ * the common LCD driver code.
+ */
+void lcd_initcolregs (void)
+{
+}
+
+void lcd_ctrl_init (void *lcdbase)
+{
+}
+
+/*
+ * Function sends the contents of the frame-buffer to the LCD
+ */
+void lcd_enable (void)
+{
+	int i, retries, fb_size;
+
+	if (!serial_inited) {
+		unsigned long baud;
+
+		baud = gd->baudrate;
+		gd->baudrate = PSOC_BAUD;
+		serial_init_dev(PSOC_PSC);
+		gd->baudrate = baud;
+		serial_setrts_dev (PSOC_PSC, RTS_ASSERT);
+		serial_inited = 1;
+	}
+
+	/*
+	 *  Implement PSoC communication protocol:
+	 * 1. Assert RTS, wait CTS assertion
+	 * 2. Transmit data
+	 * 3. Negate RTS, wait CTS negation
+	 */
+
+	/* 1 */
+	serial_setrts_dev (PSOC_PSC, RTS_ASSERT);
+	for (retries = PSOC_RETRIES; retries; retries--) {
+		if (serial_getcts_dev(PSOC_PSC) == CTS_ASSERT)
+			break;
+		udelay (PSOC_WAIT_TIME);
+	}
+	if (!retries) {
+		printf ("%s Error: PSoC doesn't respond on "
+			"RTS ASSERT\n",	__FUNCTION__);
+	}
+
+	/* 2 */
+	fb_size = panel_info.vl_row * (panel_info.vl_col >> 3);
+
+#if !defined(SWAPPED_LCD)
+	for (i=0; i<fb_size; i++) {
+		serial_putc_raw_dev (PSOC_PSC, ((char *)lcd_base)[i]);
+	}
+#else
+    {
+	int x, y, pwidth;
+	char *p = (char *)lcd_base;
+
+	pwidth = ((panel_info.vl_col+7) >> 3);
+	for (y=0; y<panel_info.vl_row; y++) {
+		i = y * pwidth;
+		for (x=0; x<pwidth; x+=5) {
+			serial_putc_raw_dev (PSOC_PSC, (p[i+x+2]<<4 & 0xF0) | (p[i+x+3]>>4 & 0x0F));
+			serial_putc_raw_dev (PSOC_PSC, (p[i+x+3]<<4 & 0xF0) | (p[i+x+4]>>4 & 0x0F));
+			serial_putc_raw_dev (PSOC_PSC, (p[i+x+4]<<4 & 0xF0) | (p[i+x]>>4 & 0x0F));
+			serial_putc_raw_dev (PSOC_PSC, (p[i+x]<<4 & 0xF0) | (p[i+x+1]>>4 & 0x0F));
+			serial_putc_raw_dev (PSOC_PSC, (p[i+x+1]<<4 & 0xF0) | (p[i+x+2]>>4 & 0x0F));
+		}
+	}
+    }
+#endif
+
+	/* 3 */
+	serial_setrts_dev (PSOC_PSC, RTS_NEGATE);
+	for (retries = PSOC_RETRIES; retries; retries--) {
+		if (serial_getcts_dev(PSOC_PSC) == CTS_NEGATE)
+			break;
+		udelay (PSOC_WAIT_TIME);
+	}
+	if (!retries) {
+		printf ("%s Error: PSoC doesn't respond on "
+			"RTS NEGATE\n",	__FUNCTION__);
+	}
+
+	return;
+}
+#endif /* CONFIG_LCD */

common/lcd.c

@@ -585,6 +585,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
 	uchar *bmap;
 	ushort padded_line;
 	unsigned long width, height;
+	unsigned long pwidth = panel_info.vl_col;
 	unsigned colors,bpix;
 	unsigned long compression;
 #if defined(CONFIG_PXA250)
@@ -628,6 +629,8 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
 		cmap = (ushort *)fbi->palette;
 #elif defined(CONFIG_MPC823)
 		cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
+#elif defined(CONFIG_MCC200)
+		/* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 #else
 # error "Don't know location of color map"
 #endif
@@ -652,9 +655,28 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
 		}
 	}
 
+	/*
+	 *  BMP format for Monochrome assumes that the state of a
+	 * pixel is described on a per Bit basis, not per Byte.
+	 *  So, in case of Monochrome BMP we should align widths
+	 * on a byte boundary and convert them from Bit to Byte
+	 * units.
+	 *  Probably, PXA250 and MPC823 process 1bpp BMP images in 
+	 * their own ways, so make the converting to be MCC200 
+	 * specific.
+	 */
+#if defined(CONFIG_MCC200)
+	if (bpix==1)
+	{
+		width = ((width + 7) & ~7) >> 3;
+		x     = ((x + 7) & ~7) >> 3;
+		pwidth= ((pwidth + 7) & ~7) >> 3;
+	}
+#endif
+
 	padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);
-	if ((x + width)>panel_info.vl_col)
-		width = panel_info.vl_col - x;
+	if ((x + width)>pwidth)
+		width = pwidth - x;
 	if ((y + height)>panel_info.vl_row)
 		height = panel_info.vl_row - y;
 
@@ -666,7 +688,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
 		for (j = 0; j < width ; j++)
 #if defined(CONFIG_PXA250)
 			*(fb++)=*(bmap++);
-#elif defined(CONFIG_MPC823)
+#elif defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 			*(fb++)=255-*(bmap++);
 #endif
 		bmap += (width - padded_line);

cpu/mpc5xxx/serial.c

@@ -165,6 +165,25 @@ void serial_putc(const char c)
 	psc->psc_buffer_8 = c;
 }
 
+#if defined(CONFIG_SERIAL_MULTI)
+void serial_putc_raw_dev(unsigned long dev_base, const char c)
+#else
+void serial_putc_raw(const char c)
+#endif
+{
+#if defined(CONFIG_SERIAL_MULTI)
+	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
+#else
+	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#endif
+	/* Wait for last character to go. */
+	while (!(psc->psc_status & PSC_SR_TXEMP))
+		;
+
+	psc->psc_buffer_8 = c;
+}
+
+
 #if defined(CONFIG_SERIAL_MULTI)
 void serial_puts_dev (unsigned long dev_base, const char *s)
 #else
@@ -239,6 +258,43 @@ void serial_setbrg(void)
 	psc->ctlr =  div & 0xff;
 }
 
+#if defined(CONFIG_SERIAL_MULTI)
+void serial_setrts_dev (unsigned long dev_base, int s)
+#else
+void serial_setrts(int s)
+#endif
+{
+#if defined(CONFIG_SERIAL_MULTI)
+	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
+#else
+	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#endif
+
+	if (s) {
+		/* Assert RTS (become LOW) */
+		psc->op1 = 0x1;
+	}
+	else {
+		/* Negate RTS (become HIGH) */
+		psc->op0 = 0x1;
+	}
+}
+
+#if defined(CONFIG_SERIAL_MULTI)
+int serial_getcts_dev (unsigned long dev_base)
+#else
+int serial_getcts(void)
+#endif
+{
+#if defined(CONFIG_SERIAL_MULTI)
+	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
+#else
+	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#endif
+
+	return (psc->ip & 0x1) ? 0 : 1;
+}
+
 #if defined(CONFIG_SERIAL_MULTI)
 int serial0_init(void)
 {

include/configs/mcc200.h

@@ -258,12 +258,27 @@
 /* #define CONFIG_FEC_10MBIT 1 */
 #define CONFIG_PHY_ADDR		1
 
+/*
+ * LCD Splash Screen
+ */
+#define CONFIG_LCD		1
+#if defined(CONFIG_LCD)
+#define CONFIG_SPLASH_SCREEN	1
+#define CFG_CONSOLE_IS_IN_ENV	1
+#define LCD_BPP		LCD_MONOCHROME
+#endif
+
 /*
  * GPIO configuration
  */
 /* 0x10000004 = 32MB SDRAM */
 /* 0x90000004 = 64MB SDRAM */
+#if defined(CONFIG_LCD)
+/* set PSC2 in UART mode */
+#define CFG_GPS_PORT_CONFIG	0x00000044
+#else
 #define CFG_GPS_PORT_CONFIG	0x00000004
+#endif
 
 /*
  * Miscellaneous configurable options

include/lcd.h

@@ -148,7 +148,14 @@ typedef struct vidinfo {
 
 extern vidinfo_t panel_info;
 
-#endif /* CONFIG_MPC823 or CONFIG_PXA250 */
+#elif defined(CONFIG_MCC200)
+typedef struct vidinfo {
+	ushort	vl_col;		/* Number of columns (i.e. 160) */
+	ushort	vl_row;		/* Number of rows (i.e. 100) */
+
+	u_char	vl_bpix;	/* Bits per pixel, 0 = 1 */
+} vidinfo_t;
+#endif /* CONFIG_MPC823, CONFIG_PXA250 or CONFIG_MCC200 */
 
 /* Video functions */