分类： LINUX
2015-02-02 22:49:47
程序流程是这样的：board_init_f函数中在内存分配时先给LCD分配一块内存，然后board_init_r函数中调用Stdio_init,后者再调用drv_lcd_init，后者再调用lcd_init,然后生成一个lcd设备，再注册这个设备后，输出就是LCD了，当然我们可以在LCD输出同时也做一个串口输出。lcd_init先做硬件LCD相关对应寄存器的设置，然后清屏，DENX的LOGO就是在清屏末尾显示的。
主要修改的地方有：
1.在/include/configs/smdk6410.h文件中增加
#define CONFIG_LCD // Add by zxd 2012.04.12
#ifdef CONFIG_LCD
#define CONFIG_LCD_LOGO
#endif
2.复制s3cfb_lcd.h s3cfb_reglcd.h到include目录下
3.修改incldue 目录下lcd.h
3.1增加 #include
3.2增加#define LCD_BPP LCD_COLOR16
3.3在#if CONFIG_MPC823 /
#elif CONFIG_CPU_PXA25X, CONFIG_MCC200, CONFIG_ATMEL_LCD
#endif
中间增加
#elif CONFIG_S3C6410
typedef struct vidinfo {
ushort vl_col; /*每行点数，如320*/
ushort vl_row; /*整屏行数，如340 */
ushort vl_width; /* 虚拟屏宽度，我们简化，不用虚拟屏*/
ushort vl_height; /* 虚拟屏高度*/
u_char vl_bpix; /*每点位数，如16*/
} vidinfo_t;
4.common目录下lcd.c下修改的内容很多，文件如下：
/*
* Common LCD routines for supported CPUs
*
*/
/************************************************************************/
/* ** HEADER FILES */
/************************************************************************/
/* #define DEBUG */
#include
#include
#include
#include
#include
#include
#include
#if defined(CONFIG_POST)
#include
#endif
#include
#include
#include
#ifdef CONFIG_LCD
/************************************************************************/
/* ** FONT DATA */
/************************************************************************/
#include
#include
/************************************************************************/
/* ** LOGO DATA */
/************************************************************************/
#ifdef CONFIG_LCD_LOGO
# include
# include
# if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
# error Default Color Map overlaps with Logo Color Map
# endif
#endif
ulong lcd_setmem (ulong addr);
DECLARE_GLOBAL_DATA_PTR;
vidinfo_t panel_info = {
S3CFB_HRES, //琛岀偣鏁?320
S3CFB_VRES, //琛屾暟 240
0, //鏄剧ず瀹藉害
0, //鏄剧ず楂樺害
4,//PIXELBITS, //姣忓儚绱犵偣浣跨敤浣嶆暟 16bpp
};
char lcd_is_enabled = 0;
int lcd_line_length;
int lcd_color_fg;
int lcd_color_bg;
void *lcd_base; /* Start of framebuffer memory */
void *lcd_console_address; /* Start of console buffer */
/*
* Frame buffer memory information
*/
static int lcd_init (void *lcdbase);
extern ulong get_HCLK(void);
static void lcd_hline(int x,int y,int width,uint16_t color);
static void lcd_vline(int x,int y,int height,uint16_t color);
static void lcd_drawchars (ushort x, ushort y, uchar *str, int count);
static inline void lcd_puts_xy (ushort x, ushort y, uchar *s);
static inline void lcd_putc_xy (ushort x, ushort y, uchar c);
static int lcd_getbgcolor (void);
static void lcd_setfgcolor (int color);
static void lcd_setbgcolor (int color);
static void *lcd_logo (void);
short console_col;
short console_row;
static void console_scrollup (void)
{
/* Copy up rows ignoring the first one */
memcpy (CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);
/* Clear the last one */
memset (CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
}
/*----------------------------------------------------------------------*/
static inline void console_back (void)
{
if (--console_col < 0) {
console_col = CONSOLE_COLS-1 ;
if (--console_row < 0) {
console_row = 0;
}
}
lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
console_row * VIDEO_FONT_HEIGHT,
' ');
}
/*----------------------------------------------------------------------*/
static inline void console_newline (void)
{
++console_row;
console_col = 0;
/* Check if we need to scroll the terminal */
if (console_row >= CONSOLE_ROWS) {
/* Scroll everything up */
console_scrollup () ;
--console_row;
}
}
void lcd_putc (const char c)
{
if (!lcd_is_enabled) {
serial_putc(c);
return;
}
switch (c) {
case '\r': console_col = 0;
return;
case '\n': console_newline();
return;
case '\t': /* Tab (8 chars alignment) */
console_col += 8;
console_col &= ~7;
if (console_col >= CONSOLE_COLS) {
console_newline();
}
return;
case '\b': console_back();
return;
default: lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
console_row * VIDEO_FONT_HEIGHT,
c);
if (++console_col >= CONSOLE_COLS) {
console_newline();
}
return;
}
/* NOTREACHED */
}
void lcd_puts (const char *s)
{
/*if (!lcd_is_enabled) {
serial_puts (s);
return;
}*/
serial_puts (s);
while (*s) {
lcd_putc (*s++);
}
}
void lcd_printf(const char *fmt, ...)
{
va_list args;
char buf[CONFIG_SYS_PBSIZE];
va_start(args, fmt);
vsprintf(buf, fmt, args);
va_end(args);
lcd_puts(buf);
}
/************************************************************************/
/* ** Low-Level Graphics Routines */
/************************************************************************/
static void lcd_hline(int x,int y,int width,uint16_t color)
{
uint16_t *pp;
int i;
pp = (uint16_t *)((uint32_t)lcd_base + y * lcd_line_length + x * panel_info.vl_bpix / 8 );
for(i=0;i
*pp = color;
pp++;
}
}
static void lcd_vline(int x,int y,int height,uint16_t color)
{
uint16_t *pp;
int i;
for(i=0;i
pp = (uint16_t *)((uint32_t)lcd_base + (y + i) * lcd_line_length + x * NBITS(panel_info.vl_bpix)/ 8 );
*pp = color;
}
}
static void lcd_drawchars (ushort x, ushort y, uchar *str, int count)
{
uchar *dest;
ushort row;
#if LCD_BPP == LCD_MONOCHROME
ushort off = x * (1 << LCD_BPP) % 8;
#endif
dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1<
for (row=0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
uchar *s = str;
int i;
#if LCD_BPP == LCD_COLOR16
ushort *d = (ushort *)dest;
#else
uchar *d = dest;
#endif
#if LCD_BPP == LCD_MONOCHROME
uchar rest = *d & -(1 << (8-off));
uchar sym;
#endif
for (i=0; i
c = *s++;
bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
#if LCD_BPP == LCD_MONOCHROME
sym = (COLOR_MASK(lcd_color_fg) & bits) |
(COLOR_MASK(lcd_color_bg) & ~bits);
*d++ = rest | (sym >> off);
rest = sym << (8-off);
#elif LCD_BPP == LCD_COLOR8
for (c=0; c<8; ++c) {
*d++ = (bits & 0x80) ?
lcd_color_fg : lcd_color_bg;
bits <<= 1;
}
#elif LCD_BPP == LCD_COLOR16
for (c=0; c<8; ++c) {
*d++ = (bits & 0x80) ?
lcd_color_fg : lcd_color_bg;
bits <<= 1;
}
#endif
}
#if LCD_BPP == LCD_MONOCHROME
*d = rest | (*d & ((1 << (8-off)) - 1));
#endif
}
}
/*----------------------------------------------------------------------*/
static inline void lcd_puts_xy (ushort x, ushort y, uchar *s)
{
#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
lcd_drawchars (x, y+BMP_LOGO_HEIGHT, s, strlen ((char *)s));
#else
lcd_drawchars (x, y, s, strlen ((char *)s));
#endif
}
/*----------------------------------------------------------------------*/
static inline void lcd_putc_xy (ushort x, ushort y, uchar c)
{
#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
lcd_drawchars (x, y+BMP_LOGO_HEIGHT, &c, 1);
#else
lcd_drawchars (x, y, &c, 1);
#endif
}
ulong calc_fbsize (void)
{
ulong size;
int line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
size = line_length * panel_info.vl_row;
//#ifdef LCD_FRAMEBUFFER
// size = 4096;
//#endif
return size;
}
/************************************************************************/
/* 鏍规嵁缁欏畾鐨勬樉绀虹紦鍐诧紝鍒濆鍖杔cd */
/* uboot浣跨敤鍐呭瓨鏈夐檺锛屽彧鑳藉紑杈熶竴涓熀鏈獥鍙? */
void lcd_ctrl_init(void *lcdbase)
{
ulong freq_lcdclk;
ulong freq_Hclk;
ulong fb_size;
unsigned char nn;
unsigned short *pp;
int i;
printf("********************************************************\n");
printf("initial lcd controller\n");
//閰嶇疆绠¤剼
GPICON_REG = 0xaaaaaaaa;
GPIPUD_REG = 0xaaaaaaaa;
GPJCON_REG = 0xaaaaaaaa;
GPJPUD_REG = 0xaaaaaaaa;
lcd_disable();
S3C_WINCON0 &= (~(S3C_WINCONx_ENWIN_F_ENABLE));
// (1)MOFPCON:SEL_BYPASS[3] value@0x7410800C 蹇呴』璁剧疆涓衡??鈥?
MIFPCON_REG &= (~SEL_BYPASS_MASK);
//(2)SPCON:LCD_SEL[1:0]value@0x74F0081A0 蹇呴』璁剧疆涓衡??0鈥?浣跨敤涓绘満 I/F 绫诲瀷,鎴栬?呰缃负鈥?1鈥?浣跨敤 RGB I/F 绫诲瀷銆?
SPCON_REG &= (~LCD_SEL_MASK);
SPCON_REG |= (RGB_IF_STYLE_MASK);
//(3)VIDCON0:閰嶇疆瑙嗛杈撳嚭鏍煎紡鍜屾樉绀轰娇鑳?绂佹銆?
freq_lcdclk = S3CFB_PIXEL_CLOCK;
freq_Hclk = get_HCLK();
nn = (unsigned char)(freq_Hclk / freq_lcdclk) - 1;
if(freq_lcdclk < freq_Hclk/2)
{
S3C_VIDCON0 = S3C_VIDCON0_INTERLACE_F_PROGRESSIVE + S3C_VIDCON0_VIDOUT_RGB_IF + \
S3C_VIDCON0_PNRMODE_RGB_P + S3C_VIDCON0_CLKVALUP_ST_FRM + S3C_VIDCON0_CLKVAL_F(nn) + \
S3C_VIDCON0_CLKDIR_DIVIDED + S3C_VIDCON0_CLKSEL_F_HCLK;
}else
{
S3C_VIDCON0 = S3C_VIDCON0_INTERLACE_F_PROGRESSIVE + S3C_VIDCON0_VIDOUT_RGB_IF + \
S3C_VIDCON0_PNRMODE_RGB_P + S3C_VIDCON0_CLKVALUP_ST_FRM + S3C_VIDCON0_CLKVAL_F(0) + \
S3C_VIDCON0_CLKDIR_DIRECTED + S3C_VIDCON0_CLKSEL_F_HCLK;
}
printf(" clk_freq:%d MHz, div_freq:%d ,rea_freq:%d MHz \n",freq_lcdclk/1000000,nn,freq_Hclk/(nn+1)/1000000);
//(4)VIDCON1:RGB I/F 鎺у埗淇″彿銆?
nn = 0;
if(S3CFB_IVCLK)
{
nn += S3C_VIDCON1_IVCLK_RISE_EDGE;
}
if(S3CFB_IHSYNC)
{
nn += S3C_VIDCON1_IHSYNC_INVERT;
}
if(S3CFB_IVSYNC)
{
nn += S3C_VIDCON1_IVSYNC_INVERT;
}
if(S3CFB_IVDEN)
{
nn += S3C_VIDCON1_IVDEN_INVERT;
}
S3C_VIDCON1 = (unsigned int)nn;
S3C_VIDCON2 = 0;
//(5)I80IFCONx:i80 绯荤粺 I/F 鎺у埗淇″彿銆?
//(6)ITUIFCON0:ITU(BT.601)鎺ュ彛鎺у埗
//(7)VIDTCONx:閰嶇疆瑙嗛杈撳嚭鏃跺簭鍜屾樉绀哄昂瀵搞??
S3C_VIDTCON0 = S3C_VIDTCON0_VBPD(S3CFB_VBP - 1) | S3C_VIDTCON0_VFPD(S3CFB_VFP - 1) | S3C_VIDTCON0_VSPW(S3CFB_VSW - 1);
S3C_VIDTCON1 = S3C_VIDTCON1_HBPD(S3CFB_HBP - 1) | S3C_VIDTCON1_HFPD(S3CFB_HFP -1) | S3C_VIDTCON1_HSPW(S3CFB_HSW - 1);
S3C_VIDTCON2 = S3C_VIDTCON2_LINEVAL(S3CFB_VRES - 1) | S3C_VIDTCON2_HOZVAL(S3CFB_HRES - 1);
printf("\n HBP = %d HFP = %d HSW = %d,Hpixs:%d",S3CFB_HBP,S3CFB_HFP,S3CFB_HSW,S3CFB_HRES);
printf("\n VBP = %d VFP = %d VSW = %d,Vpixs:%d",S3CFB_VBP,S3CFB_VFP,S3CFB_VSW,S3CFB_VRES);
//(8)WINCONx:绐楀彛鏍煎紡璁剧疆
S3C_WINCON0 = S3C_WINCONx_BPPMODE_F_16BPP_565|S3C_WINCONx_BYTSWP_ENABLE;
S3C_WINCON1 = 0;
S3C_WINCON2 = 0;
S3C_WINCON3 = 0;
S3C_WINCON4 = 0;
//(9)VIDOSDxA ,VIDOSDxB:绐楀彛浣嶇疆璁剧疆
S3C_VIDOSD0A = S3C_VIDOSDxA_OSD_LTX_F(0) + S3C_VIDOSDxA_OSD_LTY_F(0);
S3C_VIDOSD0B = S3C_VIDOSDxB_OSD_RBX_F(S3CFB_HRES) | S3C_VIDOSDxB_OSD_RBY_F(S3CFB_VRES);
S3C_VIDOSD0C = S3C_VIDOSD0C_OSDSIZE(S3CFB_HRES*S3CFB_VRES);
S3C_VIDOSD1A = 0;
S3C_VIDOSD1B = 0;
S3C_VIDOSD1C = 0;
S3C_VIDOSD1D = 0;
S3C_VIDOSD2A = 0;
S3C_VIDOSD2B = 0;
S3C_VIDOSD2C = 0;
S3C_VIDOSD2D = 0;
S3C_VIDOSD3A = 0;
S3C_VIDOSD3B = 0;
S3C_VIDOSD3C = 0;
S3C_VIDOSD4A = 0;
S3C_VIDOSD4B = 0;
S3C_VIDOSD4C = 0;
//(10)VIDOSDxC:alpha 鍊艰缃?
//(11)VIDWxxADDx:婧愬浘鍍忓湴鍧?璁剧疆
fb_size = calc_fbsize();
//#ifdef LCD_FRAMEBUFFER
// fb_size = (panel_info.vl_col * panel_info.vl_bpix) / 8 * panel_info.vl_row;
//#endif
// S3C_VIDW00ADD0B0 = (unsigned int)(lcdbase) | S3C_VIDWxxADD0_VBANK_F((unsigned int)lcdbase);
S3C_VIDW00ADD0B0 = virt_to_phys(lcdbase);
S3C_VIDW00ADD0B1 = 0;
S3C_VIDW01ADD0B0 = 0;
S3C_VIDW01ADD0B1 = 0;
S3C_VIDW02ADD0 = 0;
S3C_VIDW03ADD0 = 0;
S3C_VIDW04ADD0 = 0;
// S3C_VIDW00ADD1B0 = S3C_VIDWxxADD1_VBASEL_F((unsigned int)(lcdbase) + fb_size);
S3C_VIDW00ADD1B0 = virt_to_phys((unsigned int)(lcdbase) + fb_size);
S3C_VIDW00ADD1B1 = 0;
S3C_VIDW01ADD1B0 = 0;
S3C_VIDW01ADD1B1 = 0;
S3C_VIDW02ADD1 = 0;
S3C_VIDW03ADD1 = 0;
S3C_VIDW04ADD1 = 0;
S3C_VIDW00ADD2 = S3C_VIDWxxADD2_OFFSIZE_F(0) | (S3C_VIDWxxADD2_PAGEWIDTH_F(panel_info.vl_col*panel_info.vl_bpix/8));
S3C_VIDW01ADD2 = 0;
S3C_VIDW02ADD2 = 0;
S3C_VIDW03ADD2 = 0;
S3C_VIDW04ADD2 = 0;
//(12)WxKEYCONx:鑹查敭鍊煎瘎瀛樺櫒
//(13)WINxMAP:绐楀彛棰滆壊鎺у埗
//(14)WPALCON:璋冭壊鏉挎帶鍒跺瘎瀛樺櫒
//(15)WxPDATAxx:绱㈠紩绐楀彛璋冭壊鏉挎暟鎹?
printf("\nFrameBuff:%08x",(unsigned int)lcdbase);
#if 1
memset(lcdbase,0x55,fb_size);
#else
pp = lcdbase;
for(i=0;i< S3CFB_HRES * S3CFB_VRES;i++)
{
*pp = 0xf100;
pp++;
}
#endif
lcd_enable();
S3C_WINCON0 |= S3C_WINCONx_ENWIN_F_ENABLE;
printf("\n LCD initialization Finished. \n");
}
/************************************************************************/
/* ** GENERIC Initialization Routines */
/************************************************************************/
int drv_lcd_init (void)
{
struct stdio_dev lcddev;
int rc;
lcd_base = (void *)(gd->fb_base);
lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
lcd_init (lcd_base); /* LCD initialization */
/* Device initialization */
memset (&lcddev, 0, sizeof (lcddev));
strcpy (lcddev.name, "lcd");
lcddev.ext = 0; /* No extensions */
lcddev.flags = DEV_FLAGS_OUTPUT; /* Output only */
lcddev.putc = lcd_putc; /* 'putc' function */
lcddev.puts = lcd_puts; /* 'puts' function */
rc = stdio_register (&lcddev);
return (rc == 0) ? 1 : rc;
}
/*----------------------------------------------------------------------*/
static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
lcd_clear();
return 0;
}
void lcd_clear(void)
{
#if LCD_BPP == LCD_MONOCHROME
/* Setting the palette */
lcd_initcolregs();
#elif LCD_BPP == LCD_COLOR8
/* Setting the palette */
/*lcd_setcolreg (CONSOLE_COLOR_BLACK, 0, 0, 0);
lcd_setcolreg (CONSOLE_COLOR_RED, 0xFF, 0, 0);
lcd_setcolreg (CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
lcd_setcolreg (CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
lcd_setcolreg (CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
lcd_setcolreg (CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
lcd_setcolreg (CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
lcd_setcolreg (CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
lcd_setcolreg (CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);*/
#endif
#ifndef CONFIG_SYS_WHITE_ON_BLACK
lcd_setfgcolor (CONSOLE_COLOR_WHITE);
lcd_setbgcolor (CONSOLE_COLOR_BLACK);
#else
lcd_setfgcolor (CONSOLE_COLOR_BLACK);
lcd_setbgcolor (CONSOLE_COLOR_WHITE);
#endif /* CONFIG_SYS_WHITE_ON_BLACK */
#ifdef LCD_TEST_PATTERN
test_pattern();
#else
/* set framebuffer to background color */
memset ((char *)lcd_base,
COLOR_MASK(lcd_getbgcolor()),
lcd_line_length*panel_info.vl_row);
#endif
/* Paint the logo and retrieve LCD base address */
//debug ("[LCD] Drawing the logo...\n");
lcd_console_address = lcd_logo ();
//lcd_console_address = (void *)lcd_base;
console_col = 0;
console_row = 0;
}
U_BOOT_CMD(
cls, 1, 1, do_lcd_clear,
"clear screen",
""
);
/*----------------------------------------------------------------------*/
static int lcd_init (void *lcdbase)
{
/* Initialize the lcd controller */
debug ("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
lcd_ctrl_init (lcdbase);
lcd_is_enabled = 1;
lcd_clear();
lcd_enable ();
/* Initialize the console */
console_col = 0;
#ifdef CONFIG_LCD_INFO_BELOW_LOGO
console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
#else
console_row = 1; /* leave 1 blank line below logo */
#endif
return 0;
}
/************************************************************************/
/* ** ROM capable initialization part - needed to reserve FB memory */
/************************************************************************/
/*
* This is called early in the system initialization to grab memory
* for the LCD controller.
* Returns new address for monitor, after reserving LCD buffer memory
*
* Note that this is running from ROM, so no write access to global data.
*/
ulong lcd_setmem (ulong addr)
{
ulong size;
int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
debug ("LCD panel info: %d x %d, %d bit/pix\n",
panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );
size = line_length * panel_info.vl_row;
/* Round up to nearest full page */
size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
/* Allocate pages for the frame buffer. */
addr -= size;
debug ("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
return (addr);
}
/*----------------------------------------------------------------------*/
static void lcd_setfgcolor (int color)
{
lcd_color_fg = color;
}
/*----------------------------------------------------------------------*/
static void lcd_setbgcolor (int color)
{
lcd_color_bg = color;
}
/*----------------------------------------------------------------------*/
#ifdef NOT_USED_SO_FAR
static int lcd_getfgcolor (void)
{
return lcd_color_fg;
}
#endif /* NOT_USED_SO_FAR */
/*----------------------------------------------------------------------*/
static int lcd_getbgcolor (void)
{
return lcd_color_bg;
}
/*----------------------------------------------------------------------*/
void lcd_disable (void)
{
S3C_VIDCON0 &= (~(S3C_VIDCON0_ENVID_ENABLE | S3C_VIDCON0_ENVID_F_ENABLE));
}
void lcd_enable (void)
{
S3C_VIDCON0 |= (S3C_VIDCON0_ENVID_ENABLE | S3C_VIDCON0_ENVID_F_ENABLE);
}
void lcd_panel_disable(void)
{
MIFPCON_REG |= SEL_BYPASS_MASK;
}
/************************************************************************/
/************************************************************************/
/* ** Chipset depending Bitmap / Logo stuff... */
/************************************************************************/
#ifdef CONFIG_LCD_LOGO
void bitmap_plot (int x, int y)
{
#ifdef CONFIG_ATMEL_LCD
uint *cmap;
#else
ushort *cmap;
#endif
ushort i, j;
uchar *bmap;
uchar *fb;
ushort *fb16;
#if defined(CONFIG_CPU_PXA)
struct pxafb_info *fbi = &panel_info.pxa;
#elif defined(CONFIG_MPC823)
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
volatile cpm8xx_t *cp = &(immr->im_cpm);
#endif
debug ("Logo: width %d height %d colors %d cmap %d\n",
BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
(int)(sizeof(bmp_logo_palette)/(sizeof(ushort))));
bmap = &bmp_logo_bitmap[0];
fb = (uchar *)(lcd_base + y * lcd_line_length + x);
if (NBITS(panel_info.vl_bpix) < 12) {
/* Leave room for default color map */
#if defined(CONFIG_CPU_PXA)
cmap = (ushort *)fbi->palette;
#elif defined(CONFIG_MPC823)
cmap = (ushort *)&(cp->lcd_cmap[BMP_LOGO_OFFSET*sizeof(ushort)]);
#elif defined(CONFIG_ATMEL_LCD)
cmap = (uint *) (panel_info.mmio + ATMEL_LCDC_LUT(0));
#else
/*
* default case: generic system with no cmap (most likely 16bpp)
* We set cmap to the source palette, so no change is done.
* This avoids even more ifdef in the next stanza
*/
cmap = bmp_logo_palette;
#endif
WATCHDOG_RESET();
/* Set color map */
for (i=0; i<(sizeof(bmp_logo_palette)/(sizeof(ushort))); ++i) {
ushort colreg = bmp_logo_palette[i];
#ifdef CONFIG_ATMEL_LCD
uint lut_entry;
#ifdef CONFIG_ATMEL_LCD_BGR555
lut_entry = ((colreg & 0x000F) << 11) |
((colreg & 0x00F0) << 2) |
((colreg & 0x0F00) >> 7);
#else /* CONFIG_ATMEL_LCD_RGB565 */
lut_entry = ((colreg & 0x000F) << 1) |
((colreg & 0x00F0) << 3) |
((colreg & 0x0F00) << 4);
#endif
*(cmap + BMP_LOGO_OFFSET) = lut_entry;
cmap++;
#else /* !CONFIG_ATMEL_LCD */
#ifdef CONFIG_SYS_INVERT_COLORS
*cmap++ = 0xffff - colreg;
#else
*cmap++ = colreg;
#endif
#endif /* CONFIG_ATMEL_LCD */
}
WATCHDOG_RESET();
for (i=0; i
bmap += BMP_LOGO_WIDTH;
fb += panel_info.vl_col;
}
}
else { /* true color mode */
u16 col16;
fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
for (i=0; i
fb16[j] =
((col16 & 0x000F) << 1) |
((col16 & 0x00F0) << 3) |
((col16 & 0x0F00) << 4);
}
bmap += BMP_LOGO_WIDTH;
fb16 += panel_info.vl_col;
}
}
WATCHDOG_RESET();
}
#endif /* CONFIG_LCD_LOGO */
/*----------------------------------------------------------------------*/
#if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
/*
* Display the BMP file located at address bmp_image.
* Only uncompressed.
*/
#ifdef CONFIG_SPLASH_SCREEN_ALIGN
#define BMP_ALIGN_CENTER 0x7FFF
#endif
int lcd_display_bitmap(ulong bmp_image, int x, int y)
{
#if !defined(CONFIG_MCC200)
ushort *cmap = NULL;
#endif
ushort *cmap_base = NULL;
ushort i, j;
uchar *fb;
bmp_image_t *bmp=(bmp_image_t *)bmp_image;
uchar *bmap;
ushort padded_line;
unsigned long width, height, byte_width;
unsigned long pwidth = panel_info.vl_col;
unsigned colors, bpix, bmp_bpix;
#if defined(CONFIG_CPU_PXA)
struct pxafb_info *fbi = &panel_info.pxa;
#elif defined(CONFIG_MPC823)
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
volatile cpm8xx_t *cp = &(immr->im_cpm);
#endif
if (!((bmp->header.signature[0]=='B') &&
(bmp->header.signature[1]=='M'))) {
printf ("Error: no valid bmp image at %lx\n", bmp_image);
return 1;
}
width = le32_to_cpu (bmp->header.width);
height = le32_to_cpu (bmp->header.height);
bmp_bpix = le16_to_cpu(bmp->header.bit_count);
colors = 1 << bmp_bpix;
bpix = NBITS(panel_info.vl_bpix);
if ((bpix != 1) && (bpix != 8) && (bpix != 16)) {
printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
bpix, bmp_bpix);
return 1;
}
/* We support displaying 8bpp BMPs on 16bpp LCDs */
if (bpix != bmp_bpix && (bmp_bpix != 8 || bpix != 16)) {
printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
bpix,
le16_to_cpu(bmp->header.bit_count));
return 1;
}
debug ("Display-bmp: %d x %d with %d colors\n",
(int)width, (int)height, (int)colors);
#if !defined(CONFIG_MCC200)
/* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
if (bmp_bpix == 8) {
#if defined(CONFIG_CPU_PXA)
cmap = (ushort *)fbi->palette;
#elif defined(CONFIG_MPC823)
cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
#elif !defined(CONFIG_ATMEL_LCD)
cmap = cmap;//panel_info.cmap;
#endif
cmap_base = cmap;
/* Set color map */
for (i=0; i
#if !defined(CONFIG_ATMEL_LCD)
ushort colreg =
( ((cte.red) << 8) & 0xf800) |
( ((cte.green) << 3) & 0x07e0) |
( ((cte.blue) >> 3) & 0x001f) ;
#ifdef CONFIG_SYS_INVERT_COLORS
*cmap = 0xffff - colreg;
#else
*cmap = colreg;
#endif
#if defined(CONFIG_MPC823)
cmap--;
#else
cmap++;
#endif
#else /* CONFIG_ATMEL_LCD */
lcd_setcolreg(i, cte.red, cte.green, cte.blue);
#endif
}
}
#endif
/*
* 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);
#ifdef CONFIG_SPLASH_SCREEN_ALIGN
if (x == BMP_ALIGN_CENTER)
x = max(0, (pwidth - width) / 2);
else if (x < 0)
x = max(0, pwidth - width + x + 1);
if (y == BMP_ALIGN_CENTER)
y = max(0, (panel_info.vl_row - height) / 2);
else if (y < 0)
y = max(0, panel_info.vl_row - height + y + 1);
#endif /* CONFIG_SPLASH_SCREEN_ALIGN */
if ((x + width)>pwidth)
width = pwidth - x;
if ((y + height)>panel_info.vl_row)
height = panel_info.vl_row - y;
bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
fb = (uchar *) (lcd_base +
(y + height - 1) * lcd_line_length + x * bpix / 8);
switch (bmp_bpix) {
case 1: /* pass through */
case 8:
if (bpix != 16)
byte_width = width;
else
byte_width = width * 2;
for (i = 0; i < height; ++i) {
WATCHDOG_RESET();
for (j = 0; j < width; j++) {
if (bpix != 16) {
#if defined(CONFIG_CPU_PXA) || defined(CONFIG_ATMEL_LCD)
*(fb++) = *(bmap++);
#elif defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
*(fb++) = 255 - *(bmap++);
#endif
} else {
*(uint16_t *)fb = cmap_base[*(bmap++)];
fb += sizeof(uint16_t) / sizeof(*fb);
}
}
bmap += (width - padded_line);
fb -= (byte_width + lcd_line_length);
}
break;
#if defined(CONFIG_BMP_16BPP)
case 16:
for (i = 0; i < height; ++i) {
WATCHDOG_RESET();
for (j = 0; j < width; j++) {
#if defined(CONFIG_ATMEL_LCD_BGR555)
*(fb++) = ((bmap[0] & 0x1f) << 2) |
(bmap[1] & 0x03);
*(fb++) = (bmap[0] & 0xe0) |
((bmap[1] & 0x7c) >> 2);
bmap += 2;
#else
*(fb++) = *(bmap++);
*(fb++) = *(bmap++);
#endif
}
bmap += (padded_line - width) * 2;
fb -= (width * 2 + lcd_line_length);
}
break;
#endif /* CONFIG_BMP_16BPP */
default:
break;
};
return (0);
}
#endif
static void *lcd_logo (void)
{
#ifdef CONFIG_SPLASH_SCREEN
char *s;
ulong addr;
static int do_splash = 1;
if (do_splash && (s = getenv("splashimage")) != NULL) {
int x = 0, y = 0;
do_splash = 0;
addr = simple_strtoul (s, NULL, 16);
#ifdef CONFIG_SPLASH_SCREEN_ALIGN
if ((s = getenv ("splashpos")) != NULL) {
if (s[0] == 'm')
x = BMP_ALIGN_CENTER;
else
x = simple_strtol (s, NULL, 0);
if ((s = strchr (s + 1, ',')) != NULL) {
if (s[1] == 'm')
y = BMP_ALIGN_CENTER;
else
y = simple_strtol (s + 1, NULL, 0);
}
}
#endif /* CONFIG_SPLASH_SCREEN_ALIGN */
#ifdef CONFIG_VIDEO_BMP_GZIP
bmp_image_t *bmp = (bmp_image_t *)addr;
unsigned long len;
if (!((bmp->header.signature[0]=='B') &&
(bmp->header.signature[1]=='M'))) {
addr = (ulong)gunzip_bmp(addr, &len);
}
#endif
if (lcd_display_bitmap (addr, x, y) == 0) {
return ((void *)lcd_base);
}
}
#endif /* CONFIG_SPLASH_SCREEN */
#ifdef CONFIG_LCD_LOGO
bitmap_plot (0, 0);
#endif /* CONFIG_LCD_LOGO */
#ifdef CONFIG_LCD_INFO
console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
lcd_show_board_info();
#endif /* CONFIG_LCD_INFO */
#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
return ((void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length));
#else
return ((void *)lcd_base);
#endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
}
/************************************************************************/
/************************************************************************/
#endif /* CONFIG_LCD */
改完这些LCD屏就有输出显示了，同时也输出到DNW窗口，如下：
U-Boot 2012.10 (Nov 19 2012 - 15:54:05) for SMDK6410
CPU: S3C6410@533MHz
Fclk = 533MHz, Hclk = 133MHz, Pclk = 66MHz (ASYNC Mode)
Board: SMDK6410
monitor len: 00080AC8
ramsize: 10000000
TLB table at: 5fff0000
Top of RAM usable for U-Boot at: 5fff0000
Reserving 514k for U-Boot at: 5ff2f000
Reserving 544k for malloc() at: 5fea7000
Reserving 40 Bytes for Board Info at: 5fea6fd8
Reserving 120 Bytes for Global Data at: 5fea6f60
New Stack Pointer is: 5fea6f50
DRAM: 256 MiB
relocation Offset is: 0812f000
_start addr is: 57e00000
new_gd: 5FEA6F60
new_addr: 5FF2F000
new_sp: 5FEA6F50
WARNING: Caches not enabled
Flash: *** failed ***
NAND: 2048 MiB
*** Warning - bad CRC, using default environment
********************************************************
initial lcd controller
clk_freq:9 MHz, div_freq:13 ,rea_freq:9 MHz
HBP = 2 HFP = 2 HSW = 41,Hpixs:480
VBP = 2 VFP = 2 VSW = 10,Vpixs:272
FrameBuff:5ffb0000
LCD initialization Finished.
In: serial
Out: lcd
Err: lcd
Net: dm9000Hit any key to stop autoboot: 0 SMDK6410 #
s3clcd.zip