完全自己写的bootloader启动kernel,2440直接可用 - EDA365电子论坛网

int main(void)% ^% b8 j) t2 ~5 K7 _; A9 t
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char c;
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char cmd_buf[200];' P1 `6 h7 `, i1 f6 t
uart0_init();/ H/ N9 m4 [% K3 G
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puts("\n\r#####################################\n\r");
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puts("The board:TQ2440\n\r");
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puts("The NAND:K9F1216U0A 256MB\n\r");. _* c' M3 o( ^
puts("The NOR:EN29LV160AB 2MB\n\r");
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puts("The SRAM:HY57V561620 x2 64MB\n\r");
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puts("just bootloader linux date: 2013.8.19;by jiangdou\n\r");( F3 E& X* w% o% T, R& }
puts("#####################################\n\r");
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lcd_Init();% u) X) } K6 D" N1 s3 x( d
my_logo();; x- L; s' j) U: O. w0 _7 K
PutPixel(20,250,0x001F);3 @4 i) N/ m9 a/ J5 c
PutPixel(40,250,0x07E0);
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PutPixel(40,250,0xF800);& |+ a# _; ~- P
//paint_Bmp(0,0,320,240,logo);& |8 i7 |4 o- d* F2 f1 ]
//lcd_ClearScr(0x001F);2 r$ r% R: A) |8 `7 L
//paint_Bmp((LCD_XSIZE_TFT -80) / 2, (LCD_YSIZE_TFT -80) / 2, 80, 80, logo);0 ]; l+ d. ^# A
puts("Booting Linux ...\n\r");! \9 T4 t ?) f$ N0 t( y, K
boot_zImage(0x00200000, 0x00300000);

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CC = arm-linux-gcc
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LD = arm-linux-ld
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AR = arm-linux-ar
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OBJCOPY = arm-linux-objcopy# Q F6 a }8 ~$ w
OBJDUMP = arm-linux-objdump
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CFLAGS := -Wall -O2
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CPPFLAGS := -nostdinc -nostdlib -fno-builtin, e+ Y+ t( A3 {2 [' H% x
LIB := $(obj)liblcd.a6 |0 q2 a8 r6 O6 E/ m
objs := start.o init.o main.o boot_zImage.o lcd_logo.o logo.o
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u-boot.bin: $(objs)
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${LD} -Tboot.lds -o boot.elf $^
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${OBJCOPY} -O binary -S boot.elf $@5 q: D0 B# ?3 x6 V/ I% h
${OBJDUMP} -D -m arm boot.elf > u_boot.dis1 |3 P3 B i1 m8 U5 }9 s! q1 B- g+ [
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%.o:%.c
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${CC} $(CPPFLAGS) $(CFLAGS) -c -o $@ $< Z m8 s$ ~, Z0 V, _6 z4 z
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%.o:%.S
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${CC} $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
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clean:$ J6 S/ B- j2 Q- u( q: C
rm -f *.o *.bin *.elf *.dis

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