完全自己写的bootloader启动kernel,2440直接可用

jiangdou · 发表于 2013-10-31 10:11

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完全自己写的bootloader启动kernel,2440直接可用，4.3寸屏，带apple的logo

int main(void)
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{
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char c;4 z" \/ v. b& S( t. n! T/ }
char cmd_buf[200];
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uart0_init();$ z/ o4 o' W; k) p4 X+ M* @& n
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puts("\n\r#####################################\n\r");. W5 J( B2 _: v& l0 t2 o+ h
puts("The board:TQ2440\n\r");- G. e$ Q3 o+ c5 f0 i& o
puts("The NAND:K9F1216U0A 256MB\n\r");; p! M- Q% j$ U: q" P
puts("The NOR:EN29LV160AB 2MB\n\r");
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puts("The SRAM:HY57V561620 x2 64MB\n\r");# A3 k4 T& [0 f+ z. I
puts("just bootloader linux date: 2013.8.19;by jiangdou\n\r"); B0 Y; j+ |: O( o# V# c" y
puts("#####################################\n\r");; }5 I+ t) H! Y- f
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lcd_Init();
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my_logo();1 ~) k3 q% @% v2 y% Y* }! R
PutPixel(20,250,0x001F);3 P5 L9 f* m. C. Y# ^ j) ^) J$ {
PutPixel(40,250,0x07E0);
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PutPixel(40,250,0xF800);
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//paint_Bmp(0,0,320,240,logo);
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//lcd_ClearScr(0x001F);
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//paint_Bmp((LCD_XSIZE_TFT -80) / 2, (LCD_YSIZE_TFT -80) / 2, 80, 80, logo);
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puts("Booting Linux ...\n\r");
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boot_zImage(0x00200000, 0x00300000);

复制代码

2.makefile

CC = ARM-linux-gcc
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LD = arm-linux-ld- `2 h" Q( T6 R+ ~4 C
AR = arm-linux-ar' p1 A+ ?1 I" U7 o
OBJCOPY = arm-linux-objcopy2 _* f3 f4 d) R
OBJDUMP = arm-linux-objdump
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CFLAGS := -Wall -O2! o8 v8 l9 c) ?/ l: k0 f
CPPFLAGS := -nostdinc -nostdlib -fno-builtin
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LIB := $(obj)liblcd.a
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objs := start.o init.o main.o boot_zImage.o lcd_logo.o logo.o) D- t5 E! r. j$ l+ B- |
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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 $@# T# {' Q* b, q' |: @5 Z% G
${OBJDUMP} -D -m arm boot.elf > u_boot.dis3 x% m3 S6 Z: Y2 n' @3 E) ]4 S
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%.o:%.c
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${CC} $(CPPFLAGS) $(CFLAGS) -c -o $@ $<+ v+ G# k3 {2 R/ P+ P
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%.o:%.S8 }: F7 P, h( g! \& g
${CC} $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
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clean:0 X' ?) x& o" X0 v" S
rm -f *.o *.bin *.elf *.dis