Header種類
ILI93xx.DL
Header種類
CCDL, IMPT, EXPT, RAW, [ERPT], [NULL]
每個Header的長度為32Bytes：
char name[4]; uint32_t ident; uint32_t offset; uint32_t size;
經由上面的格式，可以知道RAW Offset是0x2b0(size=0x2788)，因此可以使用如下指令取出Binary並且反組譯:
$ dd if=ILI9338.DL of=ILI9338.bin bs=1 skip=696 $ mipsel-linux-objdump -b binary -m mips -D ILI9338.bin > ILI9338.dis
根據Dingux的驅動程式(drivers/video/jz4740_slcd.h)，ILI9338的LCD初使化片段指令如下：
Mcupanel_Command(0x11); mdelay(100); Mcupanel_Command(0xCB); Mcupanel_Data(0x01); Mcupanel_Command(0xC0); Mcupanel_Data(0x26); Mcupanel_Data(0x01); ...
反組譯位置
// Mcupanel_Command(0x11); c64: 11000424 li a0,17 c68: 1c00bfaf sw ra,28(sp) c6c: 1800bcaf sw gp,24(sp) c70: 6023998f lw t9,9056(gp) c74: 09f82003 jalr t9 c78: 00000000 nop // mdelay(100); c7c: 1000bc8f lw gp,16(sp) c80: 64000424 li a0,100 c84: 8c23998f lw t9,9100(gp) c88: 09f82003 jalr t9 c8c: 00000000 nop // Mcupanel_Command(0xCB); c90: 1000bc8f lw gp,16(sp) c94: cb000424 li a0,203 c98: 6023998f lw t9,9056(gp) c9c: 09f82003 jalr t9 ca0: 00000000 nop // Mcupanel_Data(0x01); ca4: 1000bc8f lw gp,16(sp) ca8: 01000424 li a0,1 cac: 0024998f lw t9,9216(gp) cb0: 09f82003 jalr t9 cb4: 00000000 nop // Mcupanel_Command(0xC0); cb8: 1000bc8f lw gp,16(sp) cbc: c0000424 li a0,192 cc0: 6023998f lw t9,9056(gp) cc4: 09f82003 jalr t9 cc8: 00000000 nop // Mcupanel_Data(0x26); ccc: 1000bc8f lw gp,16(sp) cd0: 26000424 li a0,38 cd4: 0024998f lw t9,9216(gp) cd8: 09f82003 jalr t9 cdc: 00000000 nop // Mcupanel_Data(0x01); ce0: 1000bc8f lw gp,16(sp) ce4: 01000424 li a0,1 ce8: 0024998f lw t9,9216(gp) cec: 09f82003 jalr t9 cf0: 00000000 nop ...
因為使用到Binary Patch的方式，通常需要考慮到是否空間不足的問題，幸運地，司徒發現只需修改幾行指令就可以點亮ILI9340，沒有遇到需要額外找尋空間的問題
/* Black magic */ Mcupanel_Command(0x11); mdelay(100); Mcupanel_Command(0xCB); Mcupanel_Data(0x01); Mcupanel_Command(0xC0); //Mcupanel_Data(0x26); //Mcupanel_Data(0x01); Mcupanel_Data(0X27); Mcupanel_Data(0X09); Mcupanel_Command(0xC1); Mcupanel_Data(0x10); //Mcupanel_Command(0xC5); //Mcupanel_Data(0x10); //Mcupanel_Data(0x52); Mcupanel_Command(0xB6); Mcupanel_Data(0X0A); Mcupanel_Data(0X02); Mcupanel_Command(0x26); Mcupanel_Data(0x01); Mcupanel_Command(0xE0); //Mcupanel_Data(0x10); //Mcupanel_Data(0x10); //Mcupanel_Data(0x10); //Mcupanel_Data(0x08); //Mcupanel_Data(0x0E); //Mcupanel_Data(0x06); //Mcupanel_Data(0x42); //Mcupanel_Data(0x28); //Mcupanel_Data(0x36); //Mcupanel_Data(0x03); //Mcupanel_Data(0x0E); //Mcupanel_Data(0x04); //Mcupanel_Data(0x13); //Mcupanel_Data(0x0E); //Mcupanel_Data(0x0C); Mcupanel_Data(0x0f); Mcupanel_Data(0x3f); Mcupanel_Data(0x3f); Mcupanel_Data(0x02); Mcupanel_Data(0x04); Mcupanel_Data(0x05); Mcupanel_Data(0x49); Mcupanel_Data(0x75); Mcupanel_Data(0x20); Mcupanel_Data(0x08); Mcupanel_Data(0x14); Mcupanel_Data(0x0c); Mcupanel_Data(0x15); Mcupanel_Data(0x0e); Mcupanel_Data(0x00); Mcupanel_Command(0XE1); //Mcupanel_Data(0x0C); //Mcupanel_Data(0x23); //Mcupanel_Data(0x26); //Mcupanel_Data(0x04); //Mcupanel_Data(0x0C); //Mcupanel_Data(0x04); //Mcupanel_Data(0x39); //Mcupanel_Data(0x24); //Mcupanel_Data(0x4B); //Mcupanel_Data(0x03); //Mcupanel_Data(0x0B); //Mcupanel_Data(0x0B); //Mcupanel_Data(0x33); //Mcupanel_Data(0x37); //Mcupanel_Data(0x0F); Mcupanel_Data(0x00); Mcupanel_Data(0x00); Mcupanel_Data(0x00); Mcupanel_Data(0x0c); Mcupanel_Data(0x1a); Mcupanel_Data(0x0d); Mcupanel_Data(0x3a); Mcupanel_Data(0x8a); Mcupanel_Data(0x40); Mcupanel_Data(0x08); Mcupanel_Data(0x11); Mcupanel_Data(0x0f); Mcupanel_Data(0x3f); Mcupanel_Data(0x3f); Mcupanel_Data(0x0f); Mcupanel_Command(0x2a); Mcupanel_Data(0x00); Mcupanel_Data(0x00); Mcupanel_Data(0x01); Mcupanel_Data(0x3f); Mcupanel_Command(0x2b); Mcupanel_Data(0x00); Mcupanel_Data(0x00); Mcupanel_Data(0x00); Mcupanel_Data(0xef); Mcupanel_Command(0x36); Mcupanel_Data(0xe8); Mcupanel_Command(0x3A); Mcupanel_Data(0x05); Mcupanel_Command(0x29); Mcupanel_Command(0x2c);
需要Patch蠻多地方，不過，幸好只有內容需要更改，不然真的很麻煩，Patch後的Bnary如下：
0001cc0: c0000424 6023998f 09f82003 00000000 ...$`#.... ..... 0001cd0: 1000bc8f 27000424 0024998f 09f82003 ....'..$.$.... . 0001ce0: 00000000 1000bc8f 09000424 0024998f ...........$.$.. 0001cf0: 09f82003 00000000 1000bc8f c1000424 .. ............$ 0001d00: 6023998f 09f82003 00000000 1000bc8f `#.... ......... 0001d10: 10000424 0024998f 09f82003 00000000 ...$.$.... ..... 0001d20: 1000bc8f b6000424 6023998f 09f82003 .......$`#.... . 0001d30: 00000000 1000bc8f 0a000424 0024998f ...........$.$.. 0001d40: 09f82003 00000000 1000bc8f 02000424 .. ............$ 0001d50: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001d60: 26000424 6023998f 09f82003 00000000 &..$`#.... ..... 0001d70: 1000bc8f 01000424 0024998f 09f82003 .......$.$.... . 0001d80: 00000000 1000bc8f e0000424 6023998f ...........$`#.. 0001d90: 09f82003 00000000 1000bc8f 0f000424 .. ............$ 0001da0: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001db0: 3f000424 0024998f 09f82003 00000000 ?..$.$.... ..... 0001dc0: 1000bc8f 3f000424 0024998f 09f82003 ....?..$.$.... . 0001dd0: 00000000 1000bc8f 02000424 0024998f ...........$.$.. 0001de0: 09f82003 00000000 1000bc8f 04000424 .. ............$ 0001df0: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001e00: 05000424 0024998f 09f82003 00000000 ...$.$.... ..... 0001e10: 1000bc8f 49000424 0024998f 09f82003 ....I..$.$.... . 0001e20: 00000000 1000bc8f 75000424 0024998f ........u..$.$.. 0001e30: 09f82003 00000000 1000bc8f 20000424 .. ......... ..$ 0001e40: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001e50: 08000424 0024998f 09f82003 00000000 ...$.$.... ..... 0001e60: 1000bc8f 14000424 0024998f 09f82003 .......$.$.... . 0001e70: 00000000 1000bc8f 0c000424 0024998f ...........$.$.. 0001e80: 09f82003 00000000 1000bc8f 15000424 .. ............$ 0001e90: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001ea0: 0e000424 0024998f 09f82003 00000000 ...$.$.... ..... 0001eb0: 1000bc8f 00000424 0024998f 09f82003 .......$.$.... . 0001ec0: 00000000 1000bc8f e1000424 6023998f ...........$`#.. 0001ed0: 09f82003 00000000 1000bc8f 00000424 .. ............$ 0001ee0: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001ef0: 00000424 0024998f 09f82003 00000000 ...$.$.... ..... 0001f00: 1000bc8f 00000424 0024998f 09f82003 .......$.$.... . 0001f10: 00000000 1000bc8f 0c000424 0024998f ...........$.$.. 0001f20: 09f82003 00000000 1000bc8f 1a000424 .. ............$ 0001f30: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001f40: 0d000424 0024998f 09f82003 00000000 ...$.$.... ..... 0001f50: 1000bc8f 3a000424 0024998f 09f82003 ....:..$.$.... . 0001f60: 00000000 1000bc8f 8a000424 0024998f ...........$.$.. 0001f70: 09f82003 00000000 1000bc8f 40000424 .. .........@..$ 0001f80: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001f90: 08000424 0024998f 09f82003 00000000 ...$.$.... ..... 0001fa0: 1000bc8f 11000424 0024998f 09f82003 .......$.$.... . 0001fb0: 00000000 1000bc8f 0f000424 0024998f ...........$.$.. 0001fc0: 09f82003 00000000 1000bc8f 3f000424 .. .........?..$ 0001fd0: 0024998f 09f82003 00000000 1000bc8f .$.... ......... 0001fe0: 3f000424 0024998f 09f82003 00000000 ?..$.$.... ..... 0001ff0: 1000bc8f 0f000424 0024998f 09f82003 .......$.$.... .
最後，使用Patch過後的ILI9340.DL和A320.HXF，就可以點亮新屏
