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第十九章、TIny4412 U-BOOT移植十九 LCD移植

2014-07-08 17:29 316 查看

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 :zthvivid@163.com

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

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