當(dāng)前位置：首頁 > 编程资源 > 编程问答 >内容正文

编程问答

第十九章、TIny4412 U-BOOT移植十九 LCD移植

發(fā)布時間：2023/12/31 编程问答 24 豆豆

生活随笔收集整理的這篇文章主要介紹了第十九章、TIny4412 U-BOOT移植十九 LCD移植小編覺得挺不錯的,現(xiàn)在分享給大家,幫大家做個參考.

這一篇主要參考博文，流程差不多，只是代碼內(nèi)容得自己寫

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

《s5pv-u-boot-2011.06之增加LCD顯示功能.PDF》的文檔

其實我一直就只想學(xué)一點東西，當(dāng)時心太大了，就直接買了Tiny4412，才發(fā)現(xiàn)這是一塊硬骨頭，網(wǎng)上資料少的可憐，FriendlyARM給的資料基本就是代碼，說明性、講原理的東西也沒有。看了好久才發(fā)現(xiàn)其給的U-BOOT是不帶LCD顯示功能的，我就想給這個U-BOOT增加LCD顯示功能，我所有的學(xué)習(xí)過程，都是為了增加LCD功能而開展的。這一篇雖然也有參考別人成份，但絕大多數(shù)內(nèi)容都是我最近這段時間分析U-BOOT后，也進行相關(guān)裸機程序后(裸機代碼的實現(xiàn)我有一篇相關(guān)的說明文檔)，有了一定的感覺，才順利完成的。

下面依據(jù)《s5pv-u -boot-2011.06之增加LCD顯示功能》的實現(xiàn)過程，來說明一下：我增加LCD功能的過程。

《s5pv-u-boot-2011.06之增加LCD顯示功能》上說，其主要完成 U-Boot 層可以在 LCD 上顯示字符，而且對于軟件分層的 U-Boot 來說，只要將底層驅(qū)動移植過來并調(diào)整好初始化參數(shù)就可以在LCD上顯示console。下圖17-1是LCD 驅(qū)動軟件分層執(zhí)行流程示意。可以看到 LCD 在執(zhí)行時最終調(diào)用的是底層的 board_video_init() 函數(shù)，其主要作用是對 LCD控制寄存器進行初始化。可由用戶根據(jù)實際 LCD 硬件編寫。

這個功能的移植修改了5 個文件。

圖19-1、LCD 驅(qū)動軟件分層執(zhí)行流程示意

廢話不多說，開始按步驟說明吧：

我用的U-Boot代碼就是光盤中FriendlyARM提供的uboot_tiny4412-20130729.tgz。我的所有編輯操作都是在windows環(huán)境下，應(yīng)用sourcein sight等工具進行的，最后才到linux環(huán)境下面進行編譯。

第一步：增加底層頭文件

復(fù)制LCD裸機程序下的字庫文件，font_8x16.h，font_10x18.h，font_sun12x22.h到\uboot_tiny4412-lcd\include\下，這三個字庫文件是從Linux源碼下提取出來的。具體說明可參看我裸機LCD程序說明文檔。

接著，在\uboot_tiny4412-lcd\include\目錄下添加一個驅(qū)動程序所需的頭文件，文件名為zth_tiny4412_lcd.h，此文件是從我的LCD裸機程序里復(fù)制過來的。zth_tiny4412_lcd.h內(nèi)容如下，大家可以將其粘貼過去。

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

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(時序)> <S700-AT070TN92 pg13(時序)>

??*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(時序)> <S700-AT070TN92 pg13(時序)>

*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：增加底層驅(qū)動文件

在\uboot_tiny4412-lcd \drivers\video\目錄下添加一個底層驅(qū)動程序文件，文件名為zth_tiny4412_lcd.c，此文件是從我的LCD裸機程序里復(fù)制過來后，進行點點修改的。zth_tiny4412_lcd.c內(nèi)容如下，大家可以將其粘貼過去。

?????? /****************************************

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

第三步：修改Makefile

打開/drivers/video/Makefile，定位到后面點位置增加：

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

如下圖所示：

圖19-2 修改Makefile示意圖

第四步：修改videomodes.c

//參考的第3步?jīng)]有去修改。

打開/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

};

接著、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

打開/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

接著定位到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：增加圖片數(shù)組

在\uboot_tiny4412-lcd\include\目錄下添加一個圖片數(shù)組文件：jpg_104160.h

此文件是用img2lcd來轉(zhuǎn)換實現(xiàn)得到，其設(shè)置示意如下圖18-3所示。

圖19-3img2lcd 軟件設(shè)置示意圖

第七步：修改cfb_console.c

首先，打開/drivers/video/cfb_console.c文件。

定們到98行左右，增加：

#if defined(CONFIG_LCD_EXYNOS4412)//modify? by zth

#include <zth_tiny4412_lcd.h>

#include <jpg_104160.h>

#endif

接著，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)

接著定位到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

打開/common/console.c，定位368行左右，為了輸出字符到LCD上，修改printf()函數(shù)。修改內(nèi)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

這一步修改配置文件，打開/include/configs/zth_tiny4412.h，首先定位到155行左右，使能調(diào)試輸出信息，這樣你會看到很多其他額外的信息，但這樣會去檢測Memorry，我們再將CONFIG_RAM_TEST注釋了，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。增加下面內(nèi)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

其實經(jīng)過上面的步驟，大家可以按第十二步進行編譯，煤寫到SD卡運行u-boot了，但會出現(xiàn)一個問題，你會發(fā)現(xiàn)程序串口輸出運行輸出到如下圖18-4所示的位置，就不會繼續(xù)往下執(zhí)行了，正常運行的串口輸出如圖18-6所示。這是為什么呢？大家查看生成的u-boot.bin大小，就會發(fā)現(xiàn)其大小為372.8K左右，如下圖18-5所示。

圖19-4、未正常運行串口輸出信息截圖

圖19-5、u-boot.bin 大小說明圖

我們來看下/sd_fuse/tiny4412/ sd_fusing.sh的文件，有如下幾行語句，下面的語句是說明BL1、BL2、u-boot.bin、還有E4412_tzsw.bin燒寫到SD卡的位置。

# fusing images

signed_bl1_position=1

bl2_position=17

uboot_position=49

tzsw_position=705

來算一下，一個扇區(qū)為512byte ，那么(705-49)*512/1024=328K，即給u-boot.bin的空間只有328k大小，后面的u-boot.bin程序被燒寫到tzsw_position 位置片的E4412_tzsw.bin給覆蓋了。

所以這們這里需要修改一下，修改內(nèi)容如下

tzsw_position=1073

這里為什么是1073呢，是因為我還改了一個地方，增加拷貝u-boot.bin大小為512K，那么512*2+49=1073了

還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

這樣就可以真正進行第十二步了。

第十一步：燒寫SD卡

???????? 以下命令提供參考：

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

運行后的串口信息如下圖所示：

圖19-6 、正常運行串口輸出信息截圖

圖19-7 、正常運行效果圖

總結(jié)

以上是生活随笔為你收集整理的第十九章、TIny4412 U-BOOT移植十九 LCD移植的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。

上一篇： Ubuntu上安裝gitlab-ce
下一篇：短视频矩阵系统，抖音矩阵系统。here