第十九章、TIny4412 U-BOOT移植十九 LCD移植

这一篇主要参考博文，流程差不多，只是代码内容得自己写

http://5istt.com/cookies/blog/?post=122

《s5pv-u-boot-2011.06之增加LCD显示功能.PDF》的文档

 

其实我一直就只想学一点东西，当时心太大了，就直接买了Tiny4412，才发现这是一块硬骨头，网上资料少的可怜，FriendlyARM给的资料基本就是代码，说明性、讲原理的东西也没有。看了好久才发现其给的U-BOOT是不带LCD显示功能的，我就想给这个U-BOOT增加LCD显示功能，我所有的学习过程，都是为了增加LCD功能而开展的。这一篇虽然也有参考别人成份，但绝大多数内容都是我最近这段时间分析U-BOOT后，也进行相关裸机程序后(裸机代码的实现我有一篇相关的说明文档)，有了一定的感觉，才顺利完成的。

下面依据《s5pv-u -boot-2011.06之增加LCD显示功能》的实现过程，来说明一下：我增加LCD功能的过程。

 

《s5pv-u-boot-2011.06之增加LCD显示功能》上说，其主要完成 U-Boot 层可以在 LCD 上显示字符，而且对于软件分层的 U-Boot 来说，只要将底层驱动移植过来并调整好初始化参数就可以在LCD上显示console。下图17-1是LCD 驱动软件分层执行流程示意。可以看到 LCD 在执行时最终调用的是底层的 board_video_init() 函数，其主要作用是对 LCD控制寄存器进行初始化。可由用户根据实际 LCD 硬件编写。

这个功能的移植修改了5 个文件。

图19-1、LCD 驱动软件分层执行流程示意

废话不多说，开始按步骤说明吧：

我用的U-Boot代码就是光盘中FriendlyARM提供的uboot_tiny4412-20130729.tgz。我的所有编辑操作都是在windows环境下，应用sourcein sight等工具进行的，最后才到linux环境下面进行编译。

第一步：增加底层头文件

复制LCD裸机程序下的字库文件，font_8x16.h，font_10x18.h，font_sun12x22.h到\uboot_tiny4412-lcd\include\下，这三个字库文件是从Linux源码下提取出来的。具体说明可参看我裸机LCD程序说明文档。

接着，在\uboot_tiny4412-lcd\include\目录下添加一个驱动程序所需的头文件，文件名为zth_tiny4412_lcd.h，此文件是从我的LCD裸机程序里复制过来的。zth_tiny4412_lcd.h内容如下，大家可以将其粘贴过去。

/****************************************

NAME:LCD.h

TRAD:

PROJECT:

CREATER:Zhang Taohua

DATA:2014-06-07

MAIL :[e-mail]

DESCRIPTION:

 *****************************************/

 

#ifndef __LCD_H

#define __LCD_H

 

extern void lcd_init(void);

extern void lcd_draw_pixel(introw, int col, int color);

extern void lcd_clear_screen(intcolor);

extern void lcd_draw_hline(introw, int col1, int col2, int color);

extern void lcd_draw_vline(intcol, int row1, int row2, int color);

extern void lcd_draw_cross(introw, int col, int halflen, int color);

extern void led_blink(intlink_times);  

extern void delay(unsigned longcount);

extern void draw_point(int x, inty, int r, int g, int b);

//extern void memset_int(unsignedint * s, int c,unsigned int count);

extern void lcd_draw_bmp(constunsigned char gImage_bmp[]);

extern voidlcd_draw_char(unsigned char c);

 

#define readb(a)                   (*(volatile unsigned char*)(a))

#define readw(a)                  (*(volatile unsigned short*)(a))

#define readl(a)                    (*(volatile unsigned int*)(a))

 

#define writeb(v,a)        (*(volatile unsigned char *)(a) = (v))

#define writew(v,a)              (*(volatile unsigned short *)(a) =(v))

#define writel(v,a)         (*(volatile unsigned int *)(a) = (v))

 

//FONT

//#define FONT8_16  1

//#define FONT10_18 1

#define FONT12_22  1

 

#define FONT_STATIC_ROW 8

 

#if FONT8_16

#define FONT_ROW 8

#define FONT_COL 16

#endif

 

#if FONT10_18

#define FONT_ROW 10

#define FONT_COL  18

#endif

 

#if FONT12_22 

#define FONT_ROW 12

#define FONT_COL  22

#endif

 

//PICTURE

#define PICTURE_WIDTH

#define PICTURE_HEIGHT

 

//LCD Clock Relate Register

#define CLK_DIV_LCD (*(volatileunsigned int *)0x1003c534)

#define CLK_SRC_MASK_LCD(*(volatile unsigned int *)0x1003c334)

#define CLK_GATE_IP_LCD(*(volatile unsigned int *)0x1003c934)

#define CLK_SRC_LCD0 (*(volatileunsigned int *)0x1003c234)

 

//Framer Buffer Address And Size

 

//#define LCD_VIDEO_ADDR     (0x54000000)    

//#define        VIDEO_MEM_SIZE 0x200000        /* 800x480x24bit =0X119400 bytes */

 

//LED IO Control Regiester

#define GPM4CON      (*(volatile unsigned long *) 0x110002E0)

#define GPM4DAT        (*(volatile unsigned long *) 0x110002E4)

//LCD OP Control Regiester

#define GPF0CON        (*(volatile unsigned int *)0x11400180)

#define GPF0DAT         (*(volatile unsigned int *)0x11400184)

#define GPF0PUD        (*(volatile unsigned int *)0x11400188)

#define GPF0DRV        (*(volatile unsigned int *)0x1140018C)

 

#define GPF1CON       (*(volatile unsigned int *)0x114001a0)

#define GPF1DAT       (*(volatileunsigned int *)0x114001a4)

#define GPF1PUD        (*(volatile unsigned int *)0x114001a8)

#define GPF1DRV        (*(volatile unsigned int *)0x114001ac)

 

#define GPF2CON        (*(volatile unsigned int *)0x114001c0)

#define GPF2DAT       (*(volatileunsigned int *)0x114001c4)

#define GPF2PUD        (*(volatile unsigned int *)0x114001c8)

#define GPF2DRV        (*(volatile unsigned int *)0x114001cc)

 

#define GPF3CON       (*(volatile unsigned int *)0x114001e0)

#define GPF3DAT       (*(volatileunsigned int *)0x114001e4)

#define GPF3PUD        (*(volatile unsigned int *)0x114001e8)

#define GPF3DRV        (*(volatile unsigned int *)0x114001ec)

 

#define LCDBLK_CFG (*(volatileunsigned int *)0x10010210)

#define LCDBLK_CFG2 (*(volatileunsigned int *)0x10010214)

 

//LCD Control Register

#define LCD_BASE 0x11C00000

 

#define VIDCON0        (*(volatile unsigned int *)(LCD_BASE +0x0000))

#define VIDCON1        (*(volatile unsigned int *)(LCD_BASE +0x0004))

#define VIDCON2        (*(volatile unsigned int *)(LCD_BASE +0x0008))

#define VIDCON3        (*(volatile unsigned int *)(LCD_BASE +0x000C))

#define VIDTCON0      (*(volatile unsigned int *)(LCD_BASE +0x0010))

#define VIDTCON1      (*(volatile unsigned int *)(LCD_BASE +0x0014))

#define VIDTCON2      (*(volatile unsigned int *)(LCD_BASE +0x0018))

#define VIDTCON3      (*(volatile unsigned int *)(LCD_BASE +0x001C))

#define WINCON0       (*(volatile unsigned int *)(LCD_BASE +0x0020))

#define WINCON1       (*(volatile unsigned int *)(LCD_BASE +0x0024))

#define WINCON2       (*(volatile unsigned int *)(LCD_BASE +0x0028))

#define WINCON3       (*(volatile unsigned int *)(LCD_BASE + 0x002C))

#define WINCON4       (*(volatile unsigned int *)(LCD_BASE +0x0030))

#define SHADOWCON       (*(volatile unsigned int *)(LCD_BASE +0x0034))

#define WINCHMAP2 (*(volatile unsigned int *)(LCD_BASE + 0x003C))

#define VIDOSD0A      (*(volatile unsigned int *)(LCD_BASE +0x0040))

#define VIDOSD0B      (*(volatile unsigned int *)(LCD_BASE +0x0044))

#define VIDOSD0C      (*(volatile unsigned int *)(LCD_BASE +0x0048))

#define VIDOSD1A      (*(volatile unsigned int *)(LCD_BASE +0x0050))

#define VIDOSD1B      (*(volatile unsigned int *)(LCD_BASE +0x0054))

#define VIDOSD1C      (*(volatile unsigned int *)(LCD_BASE +0x0058))

#define VIDOSD1D     (*(volatile unsigned int *)(LCD_BASE +0x005C))

#define VIDOSD2A      (*(volatile unsigned int *)(LCD_BASE +0x0060))

#define VIDOSD2B      (*(volatile unsigned int *)(LCD_BASE +0x0064))

#define VIDOSD2C      (*(volatile unsigned int *)(LCD_BASE +0x0068))

#define VIDOSD2D     (*(volatile unsigned int *)(LCD_BASE +0x006C))

#define VIDOSD3A      (*(volatile unsigned int *)(LCD_BASE +0x0070))

#define VIDOSD3B      (*(volatile unsigned int *)(LCD_BASE +0x0074))

#define VIDOSD3C      (*(volatile unsigned int *)(LCD_BASE +0x0078))

#define VIDOSD4A      (*(volatile unsigned int *)(LCD_BASE +0x0080))

#define VIDOSD4B      (*(volatile unsigned int *)(LCD_BASE +0x0084))

#define VIDOSD4C      (*(volatile unsigned int *)(LCD_BASE +0x0088))

#define VIDW00ADD0B0    (*(volatile unsigned int *)(LCD_BASE +0x00A0))

#define VIDW00ADD0B1    (*(volatile unsigned int *)(LCD_BASE +0x00A4))

#define VIDW00ADD0B2    (*(volatile unsigned int *)(LCD_BASE +0x20A0))

#define VIDW01ADD0B0    (*(volatile unsigned int *)(LCD_BASE +0x00A8))

#define VIDW01ADD0B1    (*(volatile unsigned int *)(LCD_BASE +0x00AC))

#define VIDW01ADD0B2    (*(volatile unsigned int *)(LCD_BASE +0x20A8))

#define VIDW02ADD0B0    (*(volatile unsigned int *)(LCD_BASE +0x00B0))

#define VIDW02ADD0B1    (*(volatile unsigned int *)(LCD_BASE +0x00B4))

#define VIDW02ADD0B2    (*(volatile unsigned int *)(LCD_BASE +0x20B0))

#define VIDW03ADD0B0    (*(volatile unsigned int *)(LCD_BASE + 0x00B8))

#define VIDW03ADD0B1    (*(volatile unsigned int *)(LCD_BASE +0x00BC))

#define VIDW03ADD0B2    (*(volatile unsigned int *)(LCD_BASE +0x20B8))

#define VIDW04ADD0B0    (*(volatile unsigned int *)(LCD_BASE +0x00C0))

#define VIDW04ADD0B1    (*(volatile unsigned int *)(LCD_BASE +0x00C4))

#define VIDW04ADD0B2    (*(volatile unsigned int *)(LCD_BASE +0x20C0))

#define VIDW00ADD1B0    (*(volatile unsigned int *)(LCD_BASE +0x00D0))

#define VIDW00ADD1B1    (*(volatile unsigned int *)(LCD_BASE +0x00D4))

#define VIDW00ADD1B2    (*(volatile unsigned int *)(LCD_BASE +0x20D0))

#define VIDW01ADD1B0    (*(volatile unsigned int *)(LCD_BASE +0x00D8))

#define VIDW01ADD1B1    (*(volatile unsigned int *)(LCD_BASE +0x00DC))

#define VIDW01ADD1B2    (*(volatile unsigned int *)(LCD_BASE +0x20D8))

#define VIDW02ADD1B0    (*(volatile unsigned int *)(LCD_BASE +0x00E0))

#define VIDW02ADD1B1    (*(volatile unsigned int *)(LCD_BASE +0x00E4))

#define VIDW02ADD1B2    (*(volatile unsigned int *)(LCD_BASE +0x20E0))

#define VIDW03ADD1B0    (*(volatile unsigned int *)(LCD_BASE +0x00E8))

#define VIDW03ADD1B1    (*(volatile unsigned int *)(LCD_BASE +0x00EC))

#define VIDW03ADD1B2    (*(volatile unsigned int *)(LCD_BASE +0x20E8))

#define VIDW04ADD1B0    (*(volatile unsigned int *)(LCD_BASE + 0x00F0))

#define VIDW04ADD1B1    (*(volatile unsigned int *)(LCD_BASE +0x00F4))

#define VIDW04ADD1B2    (*(volatile unsigned int *)(LCD_BASE +0x20F0))

#define VIDW00ADD2        (*(volatile unsigned int *)(LCD_BASE +0x0100))

#define VIDW01ADD2        (*(volatile unsigned int *)(LCD_BASE +0x0104))

#define VIDW02ADD2        (*(volatile unsigned int *)(LCD_BASE +0x0108))

#define VIDW03ADD2        (*(volatile unsigned int *)(LCD_BASE +0x010C))

#define VIDW04ADD2        (*(volatile unsigned int *)(LCD_BASE +0x0110))

#define VIDINTCON0 (*(volatile unsigned int *)(LCD_BASE + 0x0130))

#define VIDINTCON1 (*(volatile unsigned int *)(LCD_BASE + 0x0134))

#define W1KEYCON0 (*(volatile unsigned int *)(LCD_BASE + 0x0140))

#define VIDW0ALPHA0     (*(volatile unsigned int *)(LCD_BASE +0x021C))

#define VIDW0ALPHA1     (*(volatile unsigned int *)(LCD_BASE +0x0220))

#define VIDW1ALPHA0     (*(volatile unsigned int *)(LCD_BASE +0x0224))

#define VIDW1ALPHA1     (*(volatile unsigned int *)(LCD_BASE +0x0228))

#define VIDW2ALPHA0     (*(volatile unsigned int *)(LCD_BASE +0x022C))

#define VIDW2ALPHA1     (*(volatile unsigned int *)(LCD_BASE +0x0230))

#define VIDW3ALPHA0     (*(volatile unsigned int *)(LCD_BASE +0x0234))

#define VIDW3ALPHA1     (*(volatile unsigned int *)(LCD_BASE +0x0238))

#define VIDW4ALPHA0     (*(volatile unsigned int *)(LCD_BASE +0x023C))

#define VIDW4ALPHA1     (*(volatile unsigned int *)(LCD_BASE +0x0240))

  

/*

  *<Exyons 4412 datasheet pg1874 pg1848(时序)> <S700-AT070TN92 pg13(时序)>

  *VIDTCON0:

  *          [23:16]: VBPD + 1 <------> tvpw (1 - 20) 13

  *          [15:8]: VFPD + 1 <------> tvfp 22

  *          [7:0]: VSPW    +1 <------> tvb - tvpw = 23 - 13 = 10

  * */

#define VBPD                            (22)  //12 22

#define VFPD                      (21)

#define VSPW                            (0)  //9   0

 

 /*<Exyons 4412 datasheet pg1874 pg1848(时序)> <S700-AT070TN92 pg13(时序)>

*VIDTCON1:

*            [23:16]:  HBPD + 1 <------> thpw (1 - 40)  36

*            [15:8]:   HFPD + 1 <------> thfp 210

*            [7:0]:       HSPW + 1 <------> thb - thpw= 46 - 36 = 10

* */

#define HBPD                     (45)  //35 45

#define HFPD               (209)

#define HSPW                     (0)  //9  0

 

#define ROW                       (480)

#define COL                        (800)

#define HOZVAL                 (COL-1)

#define LINEVAL                (ROW-1)// 479

 

/*

 * Register offsets

*/

#define EXYNOS_WINCON(x)                        (x * 0x04)

#define EXYNOS_VIDOSD(x)                         (x * 0x10)

#define EXYNOS_BUFFER_OFFSET(x)           (x * 0x08)

#define EXYNOS_BUFFER_SIZE(x)                       (x * 0x04)

 

/*

 * Bit Definitions

*/

 

/* VIDCON0 */

#defineEXYNOS_VIDCON0_DSI_DISABLE                 (0<< 30)

#define EXYNOS_VIDCON0_DSI_ENABLE                  (1 << 30)

#defineEXYNOS_VIDCON0_SCAN_PROGRESSIVE                   (0<< 29)

#define EXYNOS_VIDCON0_SCAN_INTERLACE                (1 << 29)

#define EXYNOS_VIDCON0_SCAN_MASK                   (1 << 29)

#define EXYNOS_VIDCON0_VIDOUT_RGB                  (0 << 26)

#define EXYNOS_VIDCON0_VIDOUT_ITU                   (1 << 26)

#defineEXYNOS_VIDCON0_VIDOUT_I80LDI0                   (2<< 26)

#defineEXYNOS_VIDCON0_VIDOUT_I80LDI1                   (3<< 26)

#defineEXYNOS_VIDCON0_VIDOUT_WB_RGB                 (4<< 26)

#defineEXYNOS_VIDCON0_VIDOUT_WB_I80LDI0            (6<< 26)

#defineEXYNOS_VIDCON0_VIDOUT_WB_I80LDI1            (7<< 26)

#defineEXYNOS_VIDCON0_VIDOUT_MASK               (7<< 26)

#defineEXYNOS_VIDCON0_PNRMODE_RGB_P                 (0<< 17)

#defineEXYNOS_VIDCON0_PNRMODE_BGR_P                 (1<< 17)

#defineEXYNOS_VIDCON0_PNRMODE_RGB_S                 (2<< 17)

#defineEXYNOS_VIDCON0_PNRMODE_BGR_S                 (3<< 17)

#defineEXYNOS_VIDCON0_PNRMODE_MASK                  (3<< 17)

#defineEXYNOS_VIDCON0_PNRMODE_SHIFT                  (17)

#define EXYNOS_VIDCON0_CLKVALUP_ALWAYS                    (0 << 16)

#defineEXYNOS_VIDCON0_CLKVALUP_START_FRAME          (1<< 16)

#defineEXYNOS_VIDCON0_CLKVALUP_MASK                 (1<< 16)

#defineEXYNOS_VIDCON0_CLKVAL_F(x)                  (((x)& 0xff) << 6)

#defineEXYNOS_VIDCON0_VCLKEN_NORMAL                (0<< 5)

#define EXYNOS_VIDCON0_VCLKEN_FREERUN               (1 << 5)

#defineEXYNOS_VIDCON0_VCLKEN_MASK                     (1<< 5)

#defineEXYNOS_VIDCON0_CLKDIR_DIRECTED               (0<< 4)

#defineEXYNOS_VIDCON0_CLKDIR_DIVIDED                 (1<< 4)

#defineEXYNOS_VIDCON0_CLKDIR_MASK               (1<< 4)

#define EXYNOS_VIDCON0_CLKSEL_HCLK                (0 << 2)

#defineEXYNOS_VIDCON0_CLKSEL_SCLK                (1<< 2)

#defineEXYNOS_VIDCON0_CLKSEL_MASK               (1<< 2)

#defineEXYNOS_VIDCON0_ENVID_ENABLE                    (1<< 1)

#defineEXYNOS_VIDCON0_ENVID_DISABLE                   (0<< 1)

#defineEXYNOS_VIDCON0_ENVID_F_ENABLE         (1<< 0)

#defineEXYNOS_VIDCON0_ENVID_F_DISABLE        (0<< 0)

 

/* VIDCON1 */

#defineEXYNOS_VIDCON1_VCLK_HOLD                       (0 << 9)

#defineEXYNOS_VIDCON1_VCLK_RUNNING                         (1 << 9)

#defineEXYNOS_VIDCON1_VCLK_RUNNING_DIS_VDEN (3<< 9)

#define EXYNOS_VIDCON1_IVCLK_FALLING_EDGE  (0 << 7)

#defineEXYNOS_VIDCON1_IVCLK_RISING_EDGE           (1<< 7)

#defineEXYNOS_VIDCON1_IHSYNC_NORMAL          (0<< 6)

#defineEXYNOS_VIDCON1_IHSYNC_INVERT                   (1<< 6)

#defineEXYNOS_VIDCON1_IVSYNC_NORMAL          (0<< 5)

#defineEXYNOS_VIDCON1_IVSYNC_INVERT                   (1<< 5)

#defineEXYNOS_VIDCON1_IVDEN_NORMAL                   (0<< 4)

#defineEXYNOS_VIDCON1_IVDEN_INVERT                     (1<< 4)

 

/* VIDCON2 */

#defineEXYNOS_VIDCON2_EN601_DISABLE                    (0<< 23)

#defineEXYNOS_VIDCON2_EN601_ENABLE                     (1<< 23)

#define EXYNOS_VIDCON2_EN601_MASK                  (1 << 23)

#define EXYNOS_VIDCON2_WB_DISABLE                  (0 << 15)

#define EXYNOS_VIDCON2_WB_ENABLE                   (1 << 15)

#define EXYNOS_VIDCON2_WB_MASK                      (1 << 15)

#defineEXYNOS_VIDCON2_TVFORMATSEL_HW               (0<< 14)

#defineEXYNOS_VIDCON2_TVFORMATSEL_SW               (1<< 14)

#define EXYNOS_VIDCON2_TVFORMATSEL_MASK                 (1 << 14)

#defineEXYNOS_VIDCON2_TVFORMATSEL_YUV422        (1<< 12)

#defineEXYNOS_VIDCON2_TVFORMATSEL_YUV444        (2<< 12)

#defineEXYNOS_VIDCON2_TVFORMATSEL_YUV_MASK        (3<< 12)

#defineEXYNOS_VIDCON2_ORGYUV_YCBCR                   (0<< 8)

#define EXYNOS_VIDCON2_ORGYUV_CBCRY                   (1 << 8)

#defineEXYNOS_VIDCON2_ORGYUV_MASK                    (1<< 8)

#defineEXYNOS_VIDCON2_YUVORD_CBCR                     (0<< 7)

#defineEXYNOS_VIDCON2_YUVORD_CRCB                     (1<< 7)

#defineEXYNOS_VIDCON2_YUVORD_MASK                    (1<< 7)

 

/* PRTCON */

#define EXYNOS_PRTCON_UPDATABLE                      (0 << 11)

#define EXYNOS_PRTCON_PROTECT                          (1 << 11)

 

/* VIDTCON0 */

#define EXYNOS_VIDTCON0_VBPDE(x)               (((x) & 0xff) << 24)

#define EXYNOS_VIDTCON0_VBPD(x)                        (((x) & 0xff)<< 16)

#define EXYNOS_VIDTCON0_VFPD(x)                        (((x) & 0xff)<< 8)

#define EXYNOS_VIDTCON0_VSPW(x)                        (((x) & 0xff)<< 0)

 

/* VIDTCON1 */

#define EXYNOS_VIDTCON1_VFPDE(x)               (((x) & 0xff) << 24)

#define EXYNOS_VIDTCON1_HBPD(x)                        (((x) & 0xff)<< 16)

#define EXYNOS_VIDTCON1_HFPD(x)                        (((x) & 0xff)<< 8)

#define EXYNOS_VIDTCON1_HSPW(x)                        (((x) & 0xff)<< 0)

 

/* VIDTCON2 */

#defineEXYNOS_VIDTCON2_LINEVAL(x)                   (((x)& 0x7ff) << 11)

#define EXYNOS_VIDTCON2_HOZVAL(x)                           (((x) & 0x7ff)<< 0)

#defineEXYNOS_VIDTCON2_LINEVAL_E(x)               ((((x)& 0x800) >> 11) << 23)

#define EXYNOS_VIDTCON2_HOZVAL_E(x)                ((((x) & 0x800) >> 11)<< 22)

 

/* Window 0~4 Control - WINCONx*/

#defineEXYNOS_WINCON_DATAPATH_DMA                     (0<< 22)

#defineEXYNOS_WINCON_DATAPATH_LOCAL                  (1<< 22)

#defineEXYNOS_WINCON_DATAPATH_MASK                   (1<< 22)

#define EXYNOS_WINCON_BUFSEL_0                        (0 << 20)

#define EXYNOS_WINCON_BUFSEL_1                        (1 << 20)

#define EXYNOS_WINCON_BUFSEL_MASK                (1 << 20)

#defineEXYNOS_WINCON_BUFSEL_SHIFT                (20)

#defineEXYNOS_WINCON_BUFAUTO_DISABLE               (0<< 19)

#defineEXYNOS_WINCON_BUFAUTO_ENABLE                (1<< 19)

#define EXYNOS_WINCON_BUFAUTO_MASK                    (1 << 19)

#defineEXYNOS_WINCON_BITSWP_DISABLE                  (0<< 18)

#defineEXYNOS_WINCON_BITSWP_ENABLE                   (1<< 18)

#defineEXYNOS_WINCON_BITSWP_SHIFT                (18)

#defineEXYNOS_WINCON_BYTESWP_DISABLE               (0<< 17)

#defineEXYNOS_WINCON_BYTESWP_ENABLE                (1 << 17)

#defineEXYNOS_WINCON_BYTESWP_SHIFT                    (17)

#defineEXYNOS_WINCON_HAWSWP_DISABLE                (0<< 16)

#defineEXYNOS_WINCON_HAWSWP_ENABLE                 (1<< 16)

#defineEXYNOS_WINCON_HAWSWP_SHIFT                     (16)

#defineEXYNOS_WINCON_WSWP_DISABLE                     (0<< 15)

#define EXYNOS_WINCON_WSWP_ENABLE               (1 << 15)

#define EXYNOS_WINCON_WSWP_SHIFT                   (15)

#define EXYNOS_WINCON_INRGB_RGB                            (0 << 13)

#define EXYNOS_WINCON_INRGB_YUV                            (1 << 13)

#define EXYNOS_WINCON_INRGB_MASK                  (1 << 13)

#defineEXYNOS_WINCON_BURSTLEN_16WORD                     (0<< 9)

#defineEXYNOS_WINCON_BURSTLEN_8WORD                (1<< 9)

#defineEXYNOS_WINCON_BURSTLEN_4WORD                (2<< 9)

#defineEXYNOS_WINCON_BURSTLEN_MASK                  (3<< 9)

#defineEXYNOS_WINCON_ALPHA_MULTI_DISABLE              (0<< 7)

#defineEXYNOS_WINCON_ALPHA_MULTI_ENABLE        (1<< 7)

#define EXYNOS_WINCON_BLD_PLANE                            (0 << 6)

#define EXYNOS_WINCON_BLD_PIXEL                      (1 << 6)

#define EXYNOS_WINCON_BLD_MASK                      (1 << 6)

#defineEXYNOS_WINCON_BPPMODE_1BPP                     (0<< 2)

#defineEXYNOS_WINCON_BPPMODE_2BPP                     (1<< 2)

#defineEXYNOS_WINCON_BPPMODE_4BPP                     (2<< 2)

#defineEXYNOS_WINCON_BPPMODE_8BPP_PAL                    (3<< 2)

#defineEXYNOS_WINCON_BPPMODE_8BPP                     (4<< 2)

#defineEXYNOS_WINCON_BPPMODE_16BPP_565                    (5<< 2)

#defineEXYNOS_WINCON_BPPMODE_16BPP_A555          (6<< 2)

#defineEXYNOS_WINCON_BPPMODE_18BPP_666                    (8<< 2)

#defineEXYNOS_WINCON_BPPMODE_18BPP_A665          (9<< 2)

#defineEXYNOS_WINCON_BPPMODE_24BPP_888                    (0xb<< 2)

#defineEXYNOS_WINCON_BPPMODE_24BPP_A887          (0xc<< 2)

#defineEXYNOS_WINCON_BPPMODE_32BPP                    (0xd<< 2)

#defineEXYNOS_WINCON_BPPMODE_16BPP_A444          (0xe<< 2)

#defineEXYNOS_WINCON_BPPMODE_15BPP_555                    (0xf<< 2)

#defineEXYNOS_WINCON_BPPMODE_MASK                   (0xf<< 2)

#defineEXYNOS_WINCON_BPPMODE_SHIFT                    (2)

#define EXYNOS_WINCON_ALPHA0_SEL                   (0 << 1)

#define EXYNOS_WINCON_ALPHA1_SEL                   (1 << 1)

#define EXYNOS_WINCON_ALPHA_SEL_MASK                (1 << 1)

#defineEXYNOS_WINCON_ENWIN_DISABLE                   (0<< 0)

#defineEXYNOS_WINCON_ENWIN_ENABLE                    (1<< 0)

 

/* WINCON1 special */

#define EXYNOS_WINCON1_VP_DISABLE                  (0 << 24)

#define EXYNOS_WINCON1_VP_ENABLE                   (1 << 24)

#define EXYNOS_WINCON1_LOCALSEL_FIMC1                (0 << 23)

#defineEXYNOS_WINCON1_LOCALSEL_VP               (1<< 23)

#defineEXYNOS_WINCON1_LOCALSEL_MASK                 (1<< 23)

 

/* WINSHMAP */

#defineEXYNOS_WINSHMAP_PROTECT(x)                (((x)& 0x1f) << 10)

#defineEXYNOS_WINSHMAP_CH_ENABLE(x)                         (1 << (x))

#define EXYNOS_WINSHMAP_CH_DISABLE(x)                 (~(7 << (x)))

#defineEXYNOS_WINSHMAP_LOCAL_ENABLE(x)                   (0x20<< (x))

#defineEXYNOS_WINSHMAP_LOCAL_DISABLE(x)           (0x20<< (x))

 

/* VIDOSDxA, VIDOSDxB */

#define EXYNOS_VIDOSD_LEFT_X(x)                         (((x) & 0x7ff)<< 11)

#define EXYNOS_VIDOSD_TOP_Y(x)                           (((x) & 0x7ff)<< 0)

#define EXYNOS_VIDOSD_RIGHT_X(x)                (((x) & 0x7ff) << 11)

#define EXYNOS_VIDOSD_BOTTOM_Y(x)                   (((x) & 0x7ff) <<0)

#defineEXYNOS_VIDOSD_RIGHT_X_E(x)                   (((x)& 0x1) << 23)

#defineEXYNOS_VIDOSD_BOTTOM_Y_E(x)               (((x)& 0x1) << 22)

 

/* VIDOSD0C, VIDOSDxD */

#define EXYNOS_VIDOSD_SIZE(x)                       (((x) & 0xffffff)<< 0)

 

/* VIDOSDxC (1~4) */

#define EXYNOS_VIDOSD_ALPHA0_R(x)                    (((x) & 0xf) <<20)

#define EXYNOS_VIDOSD_ALPHA0_G(x)                    (((x) & 0xf) <<16)

#define EXYNOS_VIDOSD_ALPHA0_B(x)                    (((x) & 0xf) <<12)

#define EXYNOS_VIDOSD_ALPHA1_R(x)                    (((x) & 0xf) << 8)

#define EXYNOS_VIDOSD_ALPHA1_G(x)                    (((x) & 0xf) << 4)

#define EXYNOS_VIDOSD_ALPHA1_B(x)                    (((x) & 0xf) << 0)

#defineEXYNOS_VIDOSD_ALPHA0_SHIFT                 (12)

#define EXYNOS_VIDOSD_ALPHA1_SHIFT                 (0)

 

/* Start Address */

#defineEXYNOS_VIDADDR_START_VBANK(x)                 (((x)& 0xff) << 24)

#defineEXYNOS_VIDADDR_START_VBASEU(x)                (((x)& 0xffffff) << 0)

 

/* End Address */

#defineEXYNOS_VIDADDR_END_VBASEL(x)                   (((x)& 0xffffff) << 0)

 

/* Buffer Size */

#define EXYNOS_VIDADDR_OFFSIZE(x)                     (((x) & 0x1fff)<< 13)

#defineEXYNOS_VIDADDR_PAGEWIDTH(x)                     (((x)& 0x1fff) << 0)

#defineEXYNOS_VIDADDR_OFFSIZE_E(x)                 ((((x)& 0x2000) >> 13) << 27)

#defineEXYNOS_VIDADDR_PAGEWIDTH_E(x)                 ((((x)& 0x2000) >> 13) << 26)

 

/* WIN Color Map */

#define EXYNOS_WINMAP_COLOR(x)                         ((x) & 0xffffff)

 

/* VIDINTCON0 */

#defineEXYNOS_VIDINTCON0_SYSMAINCON_DISABLE        (0<< 19)

#defineEXYNOS_VIDINTCON0_SYSMAINCON_ENABLE         (1<< 19)

#defineEXYNOS_VIDINTCON0_SYSSUBCON_DISABLE           (0<< 18)

#defineEXYNOS_VIDINTCON0_SYSSUBCON_ENABLE            (1<< 18)

#defineEXYNOS_VIDINTCON0_SYSIFDONE_DISABLE            (0<< 17)

#defineEXYNOS_VIDINTCON0_SYSIFDONE_ENABLE             (1<< 17)

#defineEXYNOS_VIDINTCON0_FRAMESEL0_BACK          (0<< 15)

#define EXYNOS_VIDINTCON0_FRAMESEL0_VSYNC              (1 << 15)

#defineEXYNOS_VIDINTCON0_FRAMESEL0_ACTIVE             (2<< 15)

#defineEXYNOS_VIDINTCON0_FRAMESEL0_FRONT        (3<< 15)

#defineEXYNOS_VIDINTCON0_FRAMESEL0_MASK         (3<< 15)

#defineEXYNOS_VIDINTCON0_FRAMESEL1_NONE         (0<< 13)

#define EXYNOS_VIDINTCON0_FRAMESEL1_BACK          (1 << 13)

#defineEXYNOS_VIDINTCON0_FRAMESEL1_VSYNC              (2<< 13)

#defineEXYNOS_VIDINTCON0_FRAMESEL1_FRONT        (3<< 13)

#defineEXYNOS_VIDINTCON0_INTFRMEN_DISABLE              (0<< 12)

#defineEXYNOS_VIDINTCON0_INTFRMEN_ENABLE        (1<< 12)

#defineEXYNOS_VIDINTCON0_FIFOSEL_WIN4                (1<< 11)

#defineEXYNOS_VIDINTCON0_FIFOSEL_WIN3                (1<< 10)

#defineEXYNOS_VIDINTCON0_FIFOSEL_WIN2                (1<< 9)

#defineEXYNOS_VIDINTCON0_FIFOSEL_WIN1                (1<< 6)

#defineEXYNOS_VIDINTCON0_FIFOSEL_WIN0                (1<< 5)

#define EXYNOS_VIDINTCON0_FIFOSEL_ALL                   (0x73 << 5)

#defineEXYNOS_VIDINTCON0_FIFOSEL_MASK               (0x73<< 5)

#defineEXYNOS_VIDINTCON0_FIFOLEVEL_25                 (0<< 2)

#defineEXYNOS_VIDINTCON0_FIFOLEVEL_50                 (1<< 2)

#defineEXYNOS_VIDINTCON0_FIFOLEVEL_75                 (2<< 2)

#define EXYNOS_VIDINTCON0_FIFOLEVEL_EMPTY         (3 << 2)

#defineEXYNOS_VIDINTCON0_FIFOLEVEL_FULL            (4<< 2)

#defineEXYNOS_VIDINTCON0_FIFOLEVEL_MASK          (7<< 2)

#defineEXYNOS_VIDINTCON0_INTFIFO_DISABLE           (0<< 1)

#defineEXYNOS_VIDINTCON0_INTFIFO_ENABLE            (1<< 1)

#define EXYNOS_VIDINTCON0_INT_DISABLE                   (0 << 0)

#defineEXYNOS_VIDINTCON0_INT_ENABLE                    (1<< 0)

#defineEXYNOS_VIDINTCON0_INT_MASK                (1<< 0)

 

/* VIDINTCON1 */

#defineEXYNOS_VIDINTCON1_INTVPPEND                     (1<< 5)

#defineEXYNOS_VIDINTCON1_INTI80PEND                     (1<< 2)

#define EXYNOS_VIDINTCON1_INTFRMPEND                   (1 << 1)

#defineEXYNOS_VIDINTCON1_INTFIFOPEND                  (1<< 0)

 

/* WINMAP */

#define EXYNOS_WINMAP_ENABLE                           (1 << 24)

 

/* WxKEYCON0 (1~4) */

#defineEXYNOS_KEYCON0_KEYBLEN_DISABLE                    (0<< 26)

#defineEXYNOS_KEYCON0_KEYBLEN_ENABLE                     (1<< 26)

#defineEXYNOS_KEYCON0_KEY_DISABLE               (0<< 25)

#define EXYNOS_KEYCON0_KEY_ENABLE                (1 << 25)

#defineEXYNOS_KEYCON0_DIRCON_MATCH_FG                    (0<< 24)

#defineEXYNOS_KEYCON0_DIRCON_MATCH_BG                   (1<< 24)

#define EXYNOS_KEYCON0_COMPKEY(x)                 (((x) & 0xffffff) <<0)

 

/* WxKEYCON1 (1~4) */

#define EXYNOS_KEYCON1_COLVAL(x)                     (((x) & 0xffffff)<< 0)

 

/* DUALRGB */

#defineEXYNOS_DUALRGB_BYPASS_SINGLE                  (0x00<< 0)

#defineEXYNOS_DUALRGB_BYPASS_DUAL                     (0x01<< 0)

#define EXYNOS_DUALRGB_MIE_DUAL                            (0x10 << 0)

#define EXYNOS_DUALRGB_MIE_SINGLE                  (0x11 << 0)

#define EXYNOS_DUALRGB_LINESPLIT                     (0x0 << 2)

#define EXYNOS_DUALRGB_FRAMESPLIT                 (0x1 << 2)

#define EXYNOS_DUALRGB_SUB_CNT(x)                   ((x & 0xfff) << 4)

#defineEXYNOS_DUALRGB_VDEN_EN_DISABLE                    (0x0<< 16)

#define EXYNOS_DUALRGB_VDEN_EN_ENABLE                     (0x1 << 16)

#defineEXYNOS_DUALRGB_MAIN_CNT(x)                ((x& 0xfff) << 18)

 

/* I80IFCONA0 and I80IFCONA1 */

#define EXYNOS_LCD_CS_SETUP(x)                           (((x) & 0xf)<< 16)

#define EXYNOS_LCD_WR_SETUP(x)                          (((x) & 0xf)<< 12)

#define EXYNOS_LCD_WR_ACT(x)                       (((x) & 0xf) <<8)

#define EXYNOS_LCD_WR_HOLD(x)                           (((x) & 0xf)<< 4)

#define EXYNOS_RSPOL_LOW                      (0 << 2)

#define EXYNOS_RSPOL_HIGH                            (1 << 2)

#define EXYNOS_I80IFEN_DISABLE                           (0 << 0)

#define EXYNOS_I80IFEN_ENABLE                            (1 << 0)

 

/* TRIGCON */

#define EXYNOS_I80SOFT_TRIG_EN                           (1 << 0)

#define EXYNOS_I80START_TRIG                         (1 << 1)

#defineEXYNOS_I80STATUS_TRIG_DONE                  (1<< 2)

 

/* DP_MIE_CLKCON */

#define EXYNOS_DP_MIE_DISABLE                           (0 << 0)

#define EXYNOS_DP_CLK_ENABLE                            (1 << 1)

#define EXYNOS_MIE_CLK_ENABLE                          (3 << 0)

 

#endif

第二步：增加底层驱动文件

在\uboot_tiny4412-lcd \drivers\video\目录下添加一个底层驱动程序文件，文件名为zth_tiny4412_lcd.c，此文件是从我的LCD裸机程序里复制过来后，进行点点修改的。zth_tiny4412_lcd.c内容如下，大家可以将其粘贴过去。

       /****************************************

NAME:LCD.C

TRAD:/USER/

PROJECT:

CREATER:Zhang Taohua

DATA:2014-05-07

DESCRIPTION:

 

 LCD relation function

 

 *****************************************/

 

//#include "stdio.h"

#include "videomodes.h"

#include <config.h>

#include <common.h>

#include <video_fb.h>

#include <lcd.h>

#include<zth_tiny4412_lcd.h>

 

#if FONT8_16

#include <font_8x16.h>

#endif

 

#if FONT10_18

#include <font_10x18.h>

#endif

 

 

#if FONT12_22 

#include <font_sun12x22.h>

#endif

 

 

#ifdefined(CONFIG_LCD_EXYNOS4412)//add by zth

 

void delay(unsigned long count)

{

       volatileunsigned long j,i = count;

       for(;i>0;i--)

              {

                     for(j=0x20000;j>0;j--){}

              }

}

 

/*void memset_int(unsigned int *s, int c,unsigned int count)

{

       unsignedint *xs = (unsigned int *) s;

 

       while(count--)

              *xs++= c;

 

       //returns;

}

*/

 

 

/****************************************

FUNCTION :led_blink()

PARAMETERS:    link_times : blink times

REMARKS:

EXAMPLE

 

SEE ALSO:

DATA:

 *****************************************/

 

void led_blink(int link_times)             

{

       GPM4CON= 0x00001111;                  //IO SET

       inti;

       for(i=0;i<= link_times;i++)

       {

              GPM4DAT= 0;                           // LED on

              delay(0x2);

              GPM4DAT= 0xf;                        // LED off

              delay(0x2);

       }

 

}

 

/****************************************

FUNCTION :led_blink()

PARAMETERS:    link_times : blink times

REMARKS:

EXAMPLE

 

SEE ALSO:

DATA:

 *****************************************/

 

DECLARE_GLOBAL_DATA_PTR;

GraphicDevice smi;

 

//extern voidboard_video_init(GraphicDevice *pGD);

 

 

void *video_hw_init (void)

{

 

      

    GraphicDevice *pGD = (GraphicDevice*)&smi;

    int videomode;

    unsigned long t1, hsynch, vsynch;

    char *penv;

    int tmp, i, bits_per_pixel;

    struct ctfb_res_modes *res_mode;

    struct ctfb_res_modes var_mode;

    int clkval;

       unsignedlong long src_clock;

       unsignedint cfg = 0, div = 0, remainder, remainder_div;

      

 

       //indicateLCD start Init

      

       printf("addby zth now  now is in zthtiny_fb.c ;video_hw_init() \n ");

       printf("modifyby zth, Strat to Init the lCD\r\n");

 

    /*

     *SET IO IS LCD

     *<Exyons 4412 datasheet pg138 pg141pg144 pg147>

     *

     * GPF0CON : [31:0] : 0x2

     * GPF1CON : [31:0] : 0x2

     * GPF2CON : [31:0] : 0x2

     * GPF3CON : [31:0] : 0x2

     * */      

 

       GPF0CON= 0x22222222;                        

       GPF1CON= 0x22222222;

       GPF2CON= 0x22222222;

       GPF3CON= 0x00222222;

       //Set pull-up,down disable

       GPF0PUD= 0x0000FFFF;

       GPF1PUD= 0x0000FFFF;

       GPF2PUD= 0x0000FFFF;

       GPF3PUD= 0x00000FFF;

      

       //MAXdrive strength---------//

       GPF0DRV= 0x0000FFFF;

       GPF1DRV= 0x0000FFFF;

       GPF2DRV= 0x0000FFFF;

       GPF3DRV= 0x00000FFF;

    /*

     *<Exyons 4412 datasheet pg526>

     *CLK_DIV_LCD:

     *              [3:0]:FIMD0_RATIO   0

     *              SCLK_FIMD0 =MOUTFIMD0/(FIMD0_RATIO + 1)

     *                         = MOUTFIMD0/1 = 800MHz

     *              MOUTFIMD0 == SCLKmpll_user_t ==800MHz      <Exyons 4412 datasheetpg453> LCD0_BLK

     * */

       CLK_DIV_LCD&= ~0xf;

    /*

     *<Exyons 4412 datasheet pg501>

     *CLK_SRC_LCD0:

     *         [3:0]:FIMD0_SEL 0110 ===> SCLKmpll_user_t 选择时钟源为SCLKmpll_user_t

     *

     * */

       CLK_SRC_LCD0&= ~0xf;

       CLK_SRC_LCD0|= 6;

       //LCD0_SYS_PWR_REG== 7 Don't use

   

   

    /*<Exyons 4412 datasheet pg1799>

     *Using the display controller data, youcan select one of the above data paths by setting LCDBLK_CFG Register

     *(0x1001_0210). For more information,refer to the "System Others" manual.

     *

     *

     * <Exyons 4412 datasheet pg880>

     * LCDBLK_CFG:

     *         [1] : FIMD of LBLK0 Bypass Selection   1 : FIMD Bypass 使用FIMD接口

     *

     * LCDBLK_CFG :

     *         [0]:MIE0_DISPON     1 :  PWM outpupt enable

     *

     *

     * */

       LCDBLK_CFG|= 1 << 1;

    LCDBLK_CFG2 |= 1;

 

       printf("Video:");

    tmp = 0;

    videomode = CONFIG_SYS_DEFAULT_VIDEO_MODE;

    /* get video mode via environment */

    if ((penv = getenv ("videomode"))!= NULL) {

        /* deceide if it is a string */

        if (penv[0] <= '9') {

            videomode = (int) simple_strtoul(penv, NULL, 16);

            tmp = 1;

        }

    } else {

        tmp = 1;

    }

 if (tmp){

    /* parameter are vesa modes */

    /* search params */

        for (i = 0; i < VESA_MODES_COUNT; i++) {

            if (vesa_modes[i].vesanr ==videomode)

            break;

        }

        if (i == VESA_MODES_COUNT) {

                         printf ("no VESAMode found, switching to mode 0x%x ", CONFIG_SYS_DEFAULT_VIDEO_MODE);

            i = 0;

        }

        res_mode =(struct ctfb_res_modes *)&res_mode_init[vesa_modes[i].resindex];

        bits_per_pixel =vesa_modes[i].bits_per_pixel;

    } else {

        res_mode = (struct ctfb_res_modes *)&var_mode;

       bits_per_pixel =video_get_params (res_mode, penv);

    }

 

        printf("add by zth now calculate hsynchand vsynch freq (info only )\n ");

    /* calculate hsynch and vsynch freq (infoonly) */

    t1 = (res_mode->left_margin +res_mode->xres + res_mode->right_margin + res_mode->hsync_len) / 8;

    t1 *= 8;

    t1 *= res_mode->pixclock;

       printf("addby zth；res_mode->pixclock= %d\n ",res_mode->pixclock);

    t1 /= 1000;

    hsynch = 1000000000L / t1;

    t1 *= (res_mode->upper_margin +res_mode->yres + res_mode->lower_margin + res_mode->vsync_len);

    t1 /= 1000;

    vsynch = 1000000000L / t1;

    /* fill in Graphic device struct */

    sprintf (pGD->modeIdent, "%dx%dx%d%ldkHz %ldHz", res_mode->xres, res_mode->yres, bits_per_pixel,(hsynch /

1000), (vsynch / 1000));

    printf ("%s\n",pGD->modeIdent);

    pGD->winSizeX = res_mode->xres;

    pGD->winSizeY = res_mode->yres;

    pGD->plnSizeX = res_mode->xres;

    pGD->plnSizeY = res_mode->yres;     

 

       printf("bits_per_pixel%d\n ",bits_per_pixel);

    switch (bits_per_pixel) {

    case 8:

           pGD->gdfBytesPP = 1;

           pGD->gdfIndex = GDF__8BIT_INDEX;

           break;

    case 15:

           pGD->gdfBytesPP = 2;

           pGD->gdfIndex = GDF_15BIT_555RGB;

           break;

    case 16:

           pGD->gdfBytesPP = 2;

           pGD->gdfIndex = GDF_16BIT_565RGB;

           break;

    case 24:

           pGD->gdfBytesPP = 4;

           pGD->gdfIndex = GDF_24BIT_888RGB;

           break;

  case 32:

           pGD->gdfBytesPP = 4;

           pGD->gdfIndex =GDF_32BIT_X888RGB;

           break;

    }

 

       //pGD->frameAdrs= gd->fb_base;

       pGD->frameAdrs= LCD_VIDEO_ADDR;

       pGD->memSize= VIDEO_MEM_SIZE;

       /*Clear video memory */

      

       memset((void*)pGD->frameAdrs, 0xFF00, pGD->memSize);

  // memset(LCD_VIDEO_ADDR, 0xFF00, VIDEO_MEM_SIZE);

 

  /*

     *<Exyons 4412 datasheet pg1869>

     *VIDCON0:

     *    [13:6]: CLKVAL_F     //设置LCD时钟分频系数

     *

     * VCLK == 33.3Mhz        <S700-AT070TN92 pg14> DCLK Frequency ===> Type : 33.3Mhz

     * VCLK = FIMD * SCLK/(CLKVAL+1)

     * VCLK =  800000000 / (CLKVAL +1)  

     * 33300000 = 800000000 /(CLKVAL + 1)

     * CLKVAL + 1 = 24.02

     * CLKVAL = 23

     * */

 

    t1 = res_mode->pixclock;

    t1 /= 1000;

    t1 = 1000000000L / t1;

    clkval = (CONFIG_SYS_VIDEO_VCLOCK_HZ / t1)- 1;

    //clkval = (800000000 / 33300000) - 1;

    

    // VIDCON0 = (23 << 6);

       VIDCON0=  EXYNOS_VIDCON0_CLKVAL_F(clkval);

      

       printf("VIDCON0= %d  or %d  \r\n",(23 <<6),EXYNOS_VIDCON0_CLKVAL_F(clkval));

    /*

     *<Exyons 4412 datasheet pg1870 pg1848(时序)> <S700-AT070TN92 pg13(时序)>

     *VIDTCON1:

     *     [5]:IVSYNC  ===> 1 : Inverted(反转)

     *     [6]:IHSYNC  ===> 1 : Inverted(反转)

     *     [7]:IVCLK   ===> 1 : Fetchesvideo data at VCLK rising edge (下降沿触发)

     *      [10:9]:FIXVCLK  ====> 01 : VCLK running

     * */

 

       //VIDCON1= (1 << 9) | (1 << 7) | (1 << 5) | (1 << 6);

       VIDCON1=  ( EXYNOS_VIDCON1_VCLK_RUNNING |

                             EXYNOS_VIDCON1_IVCLK_RISING_EDGE|

                             EXYNOS_VIDCON1_IVSYNC_INVERT |

                             EXYNOS_VIDCON1_IHSYNC_INVERT);        

      

       /*

       printf("VIDCON1= %d  or %d  \r\n",(1 << 9) | (1 << 7) |(1 << 5) | (1 << 6),

                                                        EXYNOS_VIDCON1_VCLK_RUNNING|

                                                       EXYNOS_VIDCON1_IVCLK_RISING_EDGE|

                                                       EXYNOS_VIDCON1_IVSYNC_INVERT|

                                                      EXYNOS_VIDCON1_IHSYNC_INVERT);

       */

      

  /*

     *<Exyons 4412 datasheet pg1874 pg1848(时序)> <S700-AT070TN92 pg13(时序)>

     *VIDTCON0:

     *      [23:16]:  VBPD + 1 <------>tvpw (1 - 20)  13

     *      [15:8]: VFPD + 1 <------> tvfp 22

     *      [7:0]: VSPW  + 1 <------>tvb - tvpw = 23 - 13 = 10

     * */

     //  VIDTCON0 = (12 << 16) | (21 << 8)| (9);  

     // VIDTCON0 = (22 << 16)| (21 << 8) | (0);

       /*VIDTCON0= ( EXYNOS_VIDTCON0_VBPD(VBPD) |      

                             EXYNOS_VIDTCON0_VFPD(VFPD) |

                             EXYNOS_VIDTCON0_VSPW(VSPW));  

       */

       VIDTCON0= ( EXYNOS_VIDTCON0_VBPD(res_mode->upper_margin) |   

                             EXYNOS_VIDTCON0_VFPD(res_mode->lower_margin)|

                             EXYNOS_VIDTCON0_VSPW(res_mode->vsync_len));  

      

 

       printf("VIDTCON0= is 22,21,0 %d; %d; %d; \r\n", res_mode->upper_margin,

                                                                                             res_mode->lower_margin,

                                                                                             res_mode->vsync_len);

 

       /*<Exyons4412 datasheet pg1874 pg1848(时序)><S700-AT070TN92 pg13(时序)>

     *VIDTCON1:

     *      [23:16]:  HBPD + 1 <------>thpw (1 - 40)  36

     *      [15:8]:   HFPD + 1 <------>thfp 210

     *      [7:0]:    HSPW  + 1 <------> thb - thpw = 46 - 36 = 10

     */

          //VIDTCON1= (35 << 16) | (209 << 8) | (9);

           //VIDTCON1= (45 << 16) | (209 << 8) | (0);

       /*    VIDTCON1 = ( EXYNOS_VIDTCON1_HBPD(HBPD) |

                                EXYNOS_VIDTCON1_HFPD(HFPD) |

                                EXYNOS_VIDTCON1_HSPW(HSPW)); 

       */

       VIDTCON1= ( EXYNOS_VIDTCON1_HBPD(res_mode->left_margin) |

                               EXYNOS_VIDTCON1_HFPD(res_mode->right_margin) |

                               EXYNOS_VIDTCON1_HSPW(res_mode->hsync_len)); 

      

       printf("VIDTCON1= is 45,209,0 %d; %d; %d; \r\n", res_mode->left_margin,

                                                                                             res_mode->right_margin,

                                                                                             res_mode->hsync_len);

 

    /*

     *<Exyons 4412 datasheet pg1875>

     *

     *HOZVAL = (Horizontal display size) – 1and LINEVAL = (Vertical display size) – 1.

     * Horizontal(水平) display size : 800

     *Vertical(垂直) display size : 480

     * */

 

       //VIDTCON2= (479 << 11) | 799;

       /*VIDTCON2= ( EXYNOS_VIDTCON2_LINEVAL(LINEVAL) |

                             EXYNOS_VIDTCON2_HOZVAL(HOZVAL));

       */

 

       VIDTCON2= ( EXYNOS_VIDTCON2_LINEVAL(pGD->winSizeY - 1) |

                                    EXYNOS_VIDTCON2_HOZVAL(pGD->winSizeX - 1));

 

       printf("VIDTCON2=  479 799 %d  or %d \r\n", pGD->winSizeY - 1,pGD->winSizeX - 1);

 

//win0

    /*

     *<Exyons 4412 datasheet pg1877>

     *WINCON0:

     * [5:2]: Selects Bits Per Pixel (BPP) mode for Window image : 1011 ===>24BPP

     * [1]:Enables/disables video output  1 = Enables

     *

     *modify by zth; have an error;add [15] :specifies word swap control bit :1=Enable ;2014 06-15 need enable

     * */

    //WINCON0 =( (1<<15) | (11 <<2) | 1);

       WINCON0=(EXYNOS_WINCON_WSWP_ENABLE | EXYNOS_WINCON_BPPMODE_24BPP_888 |

                       EXYNOS_WINCON_ENWIN_ENABLE);

 

       /*

       printf("WINCON0= %d  or %d  \r\n",(1<<15)|(11 << 2) | 1,

                                                               EXYNOS_WINCON_WSWP_ENABLE|

                                                               EXYNOS_WINCON_BPPMODE_24BPP_888|

                                                               EXYNOS_WINCON_ENWIN_ENABLE);

       */

      

  /*

     *<Exyons 4412 datasheet pg1895>

     *VIDOSD0C:Specifies the Window Size (窗口尺寸 单位为word)

     *         

     *

     * */

     //VIDOSD0C = 480 * 800;

       //VIDOSD0C= EXYNOS_VIDOSD_SIZE(ROW * COL);

       VIDOSD0C= EXYNOS_VIDOSD_SIZE(pGD->winSizeY * pGD->winSizeX);

      

       //printf("VIDOSD0C= %d  or %d  \r\n",480 * 800,EXYNOS_VIDOSD_SIZE(ROW *COL));

 

    /*

     *<Exyons 4412 datasheet pg1891pg1801>

     *[0]: Enables Channel 0. 1 = Enables

     * */

     // SHADOWCON |= 1;

    SHADOWCON |= EXYNOS_WINSHMAP_CH_ENABLE(0);

       printf("SHADOWCON= %d       or %d  \r\n",1,EXYNOS_WINSHMAP_CH_ENABLE(0));

 

    /*

     *<Exyons 4412 datasheet  pg1894 pg1801>

     *[18:16] Selects Channel 0's channel. ===>001 = Window 0

     *[2:0] Selects Window 0's channel.  ===> 001 = Channel 0

     *

     *

     * */

 

       /*WINCHMAP2&= ~(7 << 16);

       WINCHMAP2|= 1 << 16;

       WINCHMAP2&= ~7;

       WINCHMAP2|= 1;

       */

      

       WINCHMAP2&=  EXYNOS_WINSHMAP_CH_DISABLE(16);

       WINCHMAP2|= EXYNOS_WINSHMAP_CH_ENABLE(16);

       WINCHMAP2&=  EXYNOS_WINSHMAP_CH_DISABLE(0);

       WINCHMAP2|= EXYNOS_WINSHMAP_CH_ENABLE(0);

             

       printf("~(7<< 16) = %d       or %d  \r\n",~(7 <<16),EXYNOS_WINSHMAP_CH_DISABLE(16));

       printf("1<< 16= %d     or %d  \r\n",1 << 16,EXYNOS_WINSHMAP_CH_ENABLE(16));

       printf("~7= %d     or %d  \r\n",~7,EXYNOS_WINSHMAP_CH_DISABLE(0));

    /*

     *<Exyons 4412 datasheet  pg1895>

     *VIDOSD0A: LCD左上角坐标

     *VIDOSD0B: LCD右下角坐标

     */

       //VIDOSD0A= 0;

       //VIDOSD0B= (799 << 11) | 479;

       VIDOSD0A=  ( EXYNOS_VIDOSD_LEFT_X(0) |EXYNOS_VIDOSD_TOP_Y(0));//0

       VIDOSD0B=  (EXYNOS_VIDOSD_RIGHT_X(pGD->winSizeX - 1) |EXYNOS_VIDOSD_BOTTOM_Y(pGD->winSizeY - 1));

 

       //printf("VIDOSD0A= %d   or %d  \r\n",0,EXYNOS_VIDOSD_LEFT_X(0) |EXYNOS_VIDOSD_TOP_Y(0));

       printf("VIDOSD0B= %d     or %d  \r\n",(799 << 11) | 479,

                                                                      EXYNOS_VIDOSD_RIGHT_X(pGD->winSizeX- 1) | EXYNOS_VIDOSD_BOTTOM_Y(pGD->winSizeY - 1));

    /*

     *<Exyons 4412 datasheet  pg1902>

     * VIDW00ADD0B0 : window0 frame buffer 起始地址

     * VIDW00ADD1B0 : window0 frame buffer 结束地址

     * */

    

       //VIDW00ADD0B0= LCD_VIDEO_ADDR;

       //VIDW00ADD1B0= LCD_VIDEO_ADDR + VIDOSD0C * 4;

       VIDW00ADD0B0= pGD->frameAdrs;

       VIDW00ADD1B0= pGD->frameAdrs + VIDOSD0C * pGD->gdfBytesPP;

       printf("pGD->gdfBytesPP= 4 ;  %d \r\n",pGD->gdfBytesPP);

 

    /*

     * <Exyons 4412 datasheet pg1869>

     * Display On: ENVID and ENVID_F are set to"1".

     * [0]:ENVID ===> 1 = Enables

     * [1]:ENVID_F ===> 1 = Enables

     * */

    // VIDCON0 |= 3;

       VIDCON0|=  (EXYNOS_VIDCON0_ENVID_ENABLE |

                             EXYNOS_VIDCON0_ENVID_F_ENABLE);  

 

       /*printf("VIDCON0= %d     or %d  \r\n",3,

                                                        (EXYNOS_VIDCON0_ENVID_ENABLE|EXYNOS_VIDCON0_ENVID_F_ENABLE));

      

       */   

 

       led_blink(10);//youcan see led blink and the lce is green now!

       printf("Video:video_hw_init complete \n");

       return((void*)&smi);   

}

 

// 描点

void lcd_draw_pixel(int row, intcol, int color)  //行，列 ，颜色

{

       unsignedlong * pixel = (unsigned long *)LCD_VIDEO_ADDR;

 

       *(pixel+ row * COL + col) = color;

 

}

// 画图

//此函数仅支持img2lcd转换格式包含信息头的文件

void lcd_draw_bmp(const unsignedchar gImage_bmp[])

{

       inti, j;

       unsignedchar *p = (unsigned char *)gImage_bmp+8;//img2lcd转换出来的包含信息头8字节

       intblue, green, red;

       intcolor;

       intpic_width, pic_height;

 

       //获取图片大小 参考img2lcd软件，可知其转换的第3、4字节为宽，5、6字节为高

       pic_width= ((*(gImage_bmp+3)<<8) | *(gImage_bmp+2) );

       pic_height=((*(gImage_bmp+5)<<8) | *(gImage_bmp+4) );

       printf("pic_width= %d,  pic_height = %d",pic_width,pic_height);

 

       for(i = 0; i < pic_height; i++)

              for(j = 0; j < pic_width; j++)

              {

                     blue  = *p++;

                     green= *p++;

                     red   = *p++;

             

                     color= red << 16 | green << 8 | blue << 0;

                     lcd_draw_pixel(i,j, color);

              }

 

}

// 清屏

void lcd_clear_screen(int color)

{

       inti, j;

 

       for(i = 0; i < ROW; i++)

              for(j = 0; j < COL; j++)

                     lcd_draw_pixel(i,j, color);

 

}

// 划横线

void lcd_draw_hline(int row, intcol1, int col2, int color)

{

       intj;

 

       //描第row行，第j列

       for(j = col1; j <= col2; j++)

              lcd_draw_pixel(row,j, color);

 

}

 

// 划竖线

void lcd_draw_vline(int col, introw1, int row2, int color)

{

       inti;

       //描第i行，第col列

       for(i = row1; i <= row2; i++)

              lcd_draw_pixel(i,col, color);

 

}

 

// 划十字

void lcd_draw_cross(int row, intcol, int halflen, int color)

{

       lcd_draw_hline(row,col-halflen, col+halflen, color);

       lcd_draw_vline(col,row-halflen, row+halflen, color);

}

 

// 画字符

void lcd_draw_char(unsigned charc)

{

       //必须是静态变量

       staticint x = 0;       // 第几列

       staticint y = 0;       // 第几行

       inti,j;

       unsignedint line_dots=0x0;

 

       //获得字模

#if FONT8_16

unsigned char *char_dots =(unsigned char *) (fontdata_8x16 + c * FONT_COL);

#endif

 

#if FONT10_18

unsigned char *char_dots =(unsigned char *) (fontdata_10x18 + c * FONT_COL*2);

#endif

 

#if FONT12_22 

unsigned char *char_dots =(unsigned char *) (fontdata_sun12x22 + c * FONT_COL*2);

#endif

 

       //是否需要回车换行

       if(c == '\n')

       {

              y+= FONT_COL;

              if(y > ROW)

                     y= 0;

              return;

       }

       elseif (c == '\r')

       {

              x= 0;

              return;

       }

 

       unsignedlinek;

              #ifFONT8_16      

              for(i = 0; i < FONT_COL; i++)

                     {

                            line_dots= char_dots[i];

                            for(j = 0; j < FONT_ROW; j++)

                            {

                                   //为1,则描蓝点

                                   if(line_dots & (0x80 >> j))

                                   {

                                          lcd_draw_pixel(y+i,x+j, 0xff);

                                   }

                            }

                     }

 

             

              #endif           

             

              #ifFONT10_18

              for(i = 0; i < FONT_COL; i++)

                     {

                            line_dots= ((char_dots[i*2]<<8) | char_dots[i*2+1]);

                            for(j = 0; j < FONT_ROW; j++)

                            {

                                   //为1,则描蓝点

                                   if(line_dots & (0x8000 >> j))

                                   {

                                          lcd_draw_pixel(y+i,x+j, 0xff);

                                   }

                            }

                     }

              #endif

 

              #ifFONT12_22

              for(i = 0; i < FONT_COL; i++)

                     {

                     line_dots= ((char_dots[i*2]<<8) | char_dots[i*2+1]);

                            for(j = 0; j < FONT_ROW; j++)

                            {

                                   //为1,则描蓝点

                                   if(line_dots & (0x8000 >> j))

                                   {

                                          lcd_draw_pixel(y+i,x+j, 0xff);

                                   }

                            }

                     }

              #endif

             

// 光标移动到下一个字符的位置

x += FONT_ROW;

if (x > COL)

{

       x= 0;

       y+= FONT_COL;

       if(y > ROW)

              y = 0;

}

}

#endif

第三步：修改Makefile

打开/drivers/video/Makefile，定位到后面点位置增加：

COBJS-$(CONFIG_LCD_EXYNOS4412)+= zth_tiny4412_lcd.o videomodes.o

如下图所示：

图19-2 修改Makefile示意图

第四步：修改videomodes.c

//参考的第3步没有去修改。

打开/drivers/video/videomodes.c，首先定位到97行左右增加：

const struct ctfb_vesa_modes vesa_modes[VESA_MODES_COUNT] = {

         {0x301,RES_MODE_640x480, 8},

         {0x310,RES_MODE_640x480, 15},

         {0x311,RES_MODE_640x480, 16},

         {0x312,RES_MODE_640x480, 24},

         {0x303,RES_MODE_800x600, 8},

         {0x313,RES_MODE_800x600, 15},

         {0x314, RES_MODE_800x600,16},

         {0x315,RES_MODE_800x600, 24},

         {0x305,RES_MODE_1024x768, 8},

         {0x316,RES_MODE_1024x768, 15},

         {0x317,RES_MODE_1024x768, 16},

         {0x318,RES_MODE_1024x768, 24},

         {0x161,RES_MODE_1152x864, 8},

         {0x162,RES_MODE_1152x864, 15},

         {0x163,RES_MODE_1152x864, 16},

         {0x307,RES_MODE_1280x1024, 8},

         {0x319,RES_MODE_1280x1024, 15},

         {0x31A,RES_MODE_1280x1024, 16},

         {0x31B,RES_MODE_1280x1024, 24},

         {0x211,RES_MODE_800x480, 24},   //modify by zth

};

 

接着、定位到106行附近，修改如下：

 

const struct ctfb_res_modes res_mode_init[RES_MODES_COUNT] = {

         /* x  y pixclk  le  ri  up       lo   hs vs s  vmode */

         {640, 480, 39721, 40,24, 32, 11, 96, 2, 0, FB_VMODE_NONINTERLACED},

         {800, 600, 27778, 64,24, 22, 1, 72, 2, 0, FB_VMODE_NONINTERLACED},

         {1024, 768, 15384,168, 8, 29, 3, 144, 4, 0, FB_VMODE_NONINTERLACED},

         {960, 720, 13100, 160,40, 32, 8, 80, 4, 0, FB_VMODE_NONINTERLACED},

         {1152, 864, 12004,200, 64, 32, 16, 80, 4, 0, FB_VMODE_NONINTERLACED},

         {1280, 1024, 9090,200, 48, 26, 1, 184, 3, 0, FB_VMODE_NONINTERLACED},

         {800, 480 ,30030 , 45,      209,22,21, 0, 0, 0, FB_VMODE_NONINTERLACED},

};

第五步：修改videomodes.h

打开/drivers/video/videomodes.h，定位到25行附近，修改如下：

#ifndefCONFIG_SYS_DEFAULT_VIDEO_MODE

//#defineCONFIG_SYS_DEFAULT_VIDEO_MODE  0x301

//#ifndefCFG_SYS_DEFAULT_VIDEO_MODE

//#defineCFG_SYS_DEFAULT_VIDEO_MODE  0x211

#define CONFIG_SYS_DEFAULT_VIDEO_MODE      0x211

#endif

 

接着定位到86行左右，修改如下：

#defineRES_MODE_640x480          0

#defineRES_MODE_800x600          1

#defineRES_MODE_1024x768        2

#defineRES_MODE_960_720          3

#defineRES_MODE_1152x864        4

#defineRES_MODE_1280x1024      5

//#define RES_MODES_COUNT       6

#define RES_MODE_800x480 6

#define RES_MODES_COUNT 7

 

//#define VESA_MODES_COUNT  19 

#define VESA_MODES_COUNT  20 //19->20

第六步：增加图片数组

在\uboot_tiny4412-lcd\include\目录下添加一个图片数组文件：jpg_104160.h

此文件是用img2lcd来转换实现得到，其设置示意如下图18-3所示。

图19-3img2lcd 软件设置示意图

第七步：修改cfb_console.c

首先，打开/drivers/video/cfb_console.c文件。

定们到98行左右，增加：

#if defined(CONFIG_LCD_EXYNOS4412)//modify  by zth

#include <zth_tiny4412_lcd.h>

#include <jpg_104160.h>

#endif

 

接着，定位到285行左右，修改：

//modify by zth

//#define VIDEO_INFO_X                  (VIDEO_LOGO_WIDTH)

//#define VIDEO_INFO_Y                  (VIDEO_FONT_HEIGHT/2)

#define VIDEO_INFO_X   (0)

#define VIDEO_INFO_Y   (VIDEO_LOGO_HEIGHT)

接着定位到1615行，增加修改：

#ifdef CONFIG_VIDEO_LOGO

         /* Plot the logo andget start point of console */

         PRINTD ("Video:Drawing the logo ...\n");

         video_console_address= video_logo ();

        

         lcd_draw_bmp(gImage_bmp);

#else

         video_console_address= video_fb_address;

#endif

第八步：修改/common/console.c

打开/common/console.c，定位368行左右，为了输出字符到LCD上，修改printf()函数。修改内容如下：

int printf(constchar *fmt, ...)

{

     va_list args;

     uint i;

     char printbuffer[CONFIG_SYS_PBSIZE];

 

     va_start(args, fmt);

     /* For this to work, printbuffer must belarger than

      *anything we ever want to print.

      */

     i = vsprintf(printbuffer, fmt, args);

     va_end(args);

     /* Print the string */

     puts(printbuffer);

 

     //modify by zth

     uint j;

     for (j = 0; j <strlen(printbuffer); j++)

     {

              lcd_draw_char((unsignedchar)printbuffer[j]);

     }

    

     return i;

}

 

第九步：修改zth_tiny4412.h

这一步修改配置文件，打开/include/configs/zth_tiny4412.h，首先定位到155行左右，使能调试输出信息，这样你会看到很多其他额外的信息，但这样会去检测Memorry，我们再将CONFIG_RAM_TEST注释了，修改如下：

//#undefCONFIG_LL_DEBUG                         /*disable debug */

#defineCONFIG_LL_DEBUG                   1

#defineDEBUG 1

//#ifdefCONFIG_LL_DEBUG

//#defineCONFIG_RAM_TEST                 1     /* Memory R/W test */

//#endif

 

定位到文件的最后部分，文件的第443行左右。增加下面内容：

/*LCD*/

 

#define CONFIG_VIDEO                   //Video support

#defineCONFIG_LCD_EXYNOS4412  1

#defineCONFIG_VIDEO_LOGO      1   //display Linux Logo in upper left corner

 

//#defineCONFIG_VIDEO_BMP_LOGO        //use bmp_logo instead of linux_logo

//#defineCONFIG_CMD_BMP         //BMP support

//#defineCONFIG_VIDEO_BMP_GZIP      //Gzipcompressed BMP image support

//#defineCONFIG_CMD_UNZIP

//#defineCONFIG_SPLASH_SCREEN    //enable splashscreen support,implicitly enable U-Boot Bitmap Support.

#defineCONFIG_VGA_AS_SINGLE_DEVICE 1

#defineCONFIG_CFB_CONSOLE

#defineVIDEO_KBD_INIT_FCT  0       //init function for keyboard

#defineVIDEO_TSTC_FCT  serial_tstc   //keyboard_tstc function

#defineVIDEO_GETC_FCT  serial_getc   //keyboard_getc function

 

 

#define LCD_VIDEO_ADDR     (0x58000000)    

#define        VIDEO_MEM_SIZE  0x200000        /* 800x480x24bit = 0X119400 bytes */

#define  CONFIG_SYS_VIDEO_VCLOCK_HZ  (800000000)

 

 

#defineCONFIG_EXTRA_ENV_SETTINGS   \

 "stdin=serial\0"      \

 "stdout=vga\0"       \

 "stderr=serial\0"     \

""

 

第十步：修改/sd_fuse/tiny4412/ sd_fusing.sh

其实经过上面的步骤，大家可以按第十二步进行编译，煤写到SD卡运行u-boot了，但会出现一个问题，你会发现程序串口输出运行输出到如下图18-4所示的位置，就不会继续往下执行了，正常运行的串口输出如图18-6所示。这是为什么呢？大家查看生成的u-boot.bin大小，就会发现其大小为372.8K左右，如下图18-5所示。

图19-4、未正常运行串口输出信息截图

 

图19-5、u-boot.bin 大小说明图

我们来看下/sd_fuse/tiny4412/ sd_fusing.sh的文件，有如下几行语句，下面的语句是说明BL1、BL2、u-boot.bin、还有E4412_tzsw.bin烧写到SD卡的位置。

# fusing images

signed_bl1_position=1

bl2_position=17

uboot_position=49

tzsw_position=705

 

来算一下，一个扇区为512byte ，那么(705-49)*512/1024=328K，即给u-boot.bin的空间只有328k大小，后面的u-boot.bin程序被烧写到tzsw_position 位置片的E4412_tzsw.bin给覆盖了。

所以这们这里需要修改一下，修改内容如下

tzsw_position=1073

 

这里为什么是1073呢，是因为我还改了一个地方，增加拷贝u-boot.bin大小为512K，那么512*2+49=1073了

还要修改一下程序里的文件/arch/arm/include/asm/arch-exynos/ movi_partition.h定位到28行

#ifdefCONFIG_TRUSTZONE

#definePART_SIZE_UBOOT              (512 *1024)  //modify by zth 328->512

#else

#definePART_SIZE_UBOOT              (512 * 1024)

#endif

 

这样就可以真正进行第十二步了。

第十一步：烧写SD卡

         以下命令提供参考：

cp -R /media/sf_share/u-boot_zth .

chmod 777 -R u-boot_zth /

cd u-boot_zth

make distclean

make zthtiny4412_config

make

cd sd_fuse/

make

cd zthtiny4412/

./sd_fusing.sh /dev/sdb

运行后的串口信息如下图所示：

图19-6 、正常运行串口输出信息截图

 

图19-7 、正常运行效果图