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

第十九章、TIny4412 U-BOOT移植十九 LCD移植相关推荐

1. 量子计算机九章潘建伟,从墨子号到九章量子计算机，潘建伟如何从无到有建立我国量子优势...

   于是潘建伟又向中科大提出申请:去海德堡大学当客座教授,同样依旧是两头跑. 又来这一套?如果说之前只是炸了窝的话,那么这次可是对大众耐心的极限考验了,各种流言蜚语铺天盖地而来. 潘建伟从不争辩,他只有一 ...

2. linux键盘设置的文件在哪个文件夹,「正点原子Linux连载」第十五章按键输入试验...

   原标题:「正点原子Linux连载」第十五章按键输入试验 第十五章按键输入试验 前面几章试验都是讲解如何使用I.MX6U的GPIO输出控制功能,I.MX6U的IO不仅能作为输出,而且也可以作为输入.I. ...

3. 【Java数据结构与算法】第十六章 图

   第十六章 图 文章目录 第十六章 图 一.图 1.介绍 2.基本术语 3.邻接矩阵 4.邻接表和逆邻接表 5.十字链表 二.深度优先遍历 三.广度优先遍历 四.代码实现 一.图 1.介绍 图相较于前面 ...

4. 代码整洁之道精华——第十四章 逐步改进

   阅读本文有两种原因:第一,你是个程序员:第二,你想成为更好的程序员.你如果想成为更好的程序员,那就请细细品味文章内容,它绝不会让你失望. 代码整洁之道教给大家如何编写整洁的代码,而不仅仅是能运行的代码 ...

5. 悬铃木超级计算机,陈根：“九章”攻擂“悬铃木”，快一百亿倍的量子霸权

   文/陈根 2019年,谷歌率先宣布实现"量子霸权"(量子优越性),一把把量子计算推入公众视野,激起量子计算领域的千层浪.就在近日,中国团队宣布量子计算机"九章" ...

6. 【正点原子MP157连载】第十九章 Buildroot根文件系统构建-摘自【正点原子】STM32MP1嵌入式Linux驱动开发指南V1.7

   1)实验平台:正点原子STM32MP157开发板 2)购买链接:https://item.taobao.com/item.htm?&id=629270721801 3)全套实验源码+手册+视频 ...

7. 【正点原子FPGA连载】第十九章FreeRtos Hello World实验 摘自【正点原子】DFZU2EG_4EV MPSoC之嵌入式Vitis开发指南

   1)实验平台:正点原子MPSoC开发板 2)平台购买地址:https://detail.tmall.com/item.htm?id=692450874670 3)全套实验源码+手册+视频下载地址: h ...

8. 鸟哥的Linux私房菜(基础篇)- 第十九章、认识与分析登录文件

   第十九章.认识与分析登录文件 最近升级日期:2009/09/14 当你的 Linux 系统出现不明原因的问题时,很多人都告诉你,你要查阅一下登录文件才能够知道系统出了什么问题了,所以说,了解登录文件是 ...

9. c语言头文件格式图片_阿波罗 STM32F767 开发板资料连载第四十九章 图片显示实验...

   1)实验平台:alientek 阿波罗 STM32F767 开发板2)摘自<STM32F7 开发指南(HAL 库版)>关注官方微信号公众号,获取更多资料:正点原子 第四十九章 图片显示实验 ...

10. C++_Primer_学习笔记_第十九章（特殊工具和技术）

    第十九章(特殊工具与技术) /1.控制内存分配 1).不能直接应用标准内存管理机制. 某一些应用程序需要自定义内存分配的的细节,比如使用关键字new将对象放置在特定的内存空间中. 为了实现这一个目的, ...

最新文章

1. 图像识别工程师 VS The application has requested the Runtime to terminate it in an unusual way.
2. 激光与红外线的区别？激光雷达与毫米波雷达区别？毫米波雷达无法感知行人吗？关于Intel Realsense D435有源红外技术猜想
3. 04机器学习实战之朴素贝叶斯
4. MSSql ID自动增长删除数据重1开始
5. 《Python神经网络编程》
6. 《恋上数据结构第1季》单向循环链表、双向循环链表以及约瑟夫环问题
7. learn mips
8. 最大最小距离聚类算法c语言,聚类算法-最大最小距离算法(实例+代码)
9. 前端对UI设计的特殊字体的处理
10. 国土空间基础信息平台与时空大数据平台的区别
11. 类似于talkingdata的灵动功能的实现
12. Windows 下使用 TFTPD32+HTTP PXE引导安装linux
13. 001-三阶魔方-概述及层先法
14. 二叉搜索树的经典应用面试题(keykey-value模式）
15. Drozer – Android APP安全评估工具（附测试案例）
16. mw325r服务器无响应,水星(MERCURY)路由器MW325R上不了网/连不上网的解决方法
17. OpenCV轮廓最大内接矩形(带角度)-计算与绘制(Python / C++源码)
18. 常见即时通讯：网易IM 、腾讯IM、环信IM、融云IM、leancloud IM介绍
19. oracle crs 4563,重启机器后，节点2无法启动crs,Oracle你生产的RAC为何如此的脆弱，有图有真相。求解...
20. GPON技术学习（一）--------GPON系统整体概况

热门文章

1. 引用账户锁定无法登录_锁定电脑后重登录，出现“引用账户当前已锁定，且可能无法登录”提示。反复输入密码，无法登录。...
2. 简易Lasso回归 R语言 变量含有分类变量处理
3. 2023武汉纺织大学计算机考研信息汇总
4. 【SQL】之数据类型
5. java毕业设计电子病历系统（附源码、数据库）
6. 成都各大商圈酒店主要客群及受到疫情影响程度浅析
7. 15、iptables详解
8. 英雄帖已下，速来揭榜 | 曙光智算有奖征文活动开始啦！
9. Unity 动画驱动位移的动画fbx导入设置
10. canvas图片文字合成（小程序分享）