error_t soclib_fb_init(struct device_s *fb, void *base, uint_t size, uint_t irq)
{
fb->base = base;
fb->irq = irq;
fb->type = DEV_CHR;
fb->op.dev.open = &fb_open;
fb->op.dev.read = &fb_read;
fb->op.dev.write = &fb_write;
fb->op.dev.close = NULL;
fb->op.dev.lseek = &fb_lseek;
fb->op.dev.mmap = &fb_mmap;
fb->op.dev.munmap = &fb_munmap;
fb->op.dev.set_params = NULL;
fb->op.dev.get_params = &fb_get_params;
fb->op.drvid = SOCLIB_FB_ID;
fb->data = (void*)size;
sprintk(fb->name,
#if CONFIG_ROOTFS_IS_VFAT
"FB%d"
#else
"fb%d"
#endif
,fb_count++);
metafs_init(&fb->node, fb->name);
return 0;
}
void hexdump(void *data, int len)
{
int i = 0;
int index = 0;
unsigned int base = 0;
unsigned char *p = data;
unsigned char hex[16 * 3 + 1] = {0, };
unsigned char text[16 + 1] = {0, };
unsigned char c;
for (i = 0; i < len; i++) {
index = i & 0xf;
if (i && index == 0) {
/* print the buffer before reset it */
printk("%08x %-48s |%-16s|\n", base, hex, text);
base += 0x10;
memset(hex, 0, sizeof hex);
memset(text, 0, sizeof text);
}
c = *p++;
sprintk((char *)&hex[index * 3], "%02x ", c);
if (c < 0x20 || c > 0x7f)
text[index] = '.';
else
text[index] = c;
}
/* print the last part */
printk("%08x %-48s |%-16s|\n", base, hex, text);
}
error_t soclib_timer_init(struct device_s *timer)
{
timer->type = DEV_INTERNAL;
timer->action.dev = timer;
timer->action.irq_handler = &timer_irq_handler;
timer->action.data = NULL;
sprintk(timer->name, "timer%d", timer_count++);
metafs_init(&timer->node, timer->name);
timer->op.timer.run = &timer_run;
timer->op.timer.stop = &timer_stop;
timer->op.timer.set_period = &timer_set_period;
timer->op.timer.get_value = &timer_get_value;
timer->op.drvid = SOCLIB_TIMER_ID;
timer->data = NULL;
return 0;
}
int printf(char *fmt , ...){
char str[50];
int index_f = 0; //跟随fmt赋值入str
int index_s = 0; //跟随着str的位置标示
int insert = 0; //当有参数比如整数出现时转化为字符串，并记录插入的字符个数
int start = 0;
int *p = &fmt;
p += 1;
while(1){
if(*(fmt + index_f) == 0x00){
str[index_s] = 0x00;
sprintk(str + start);
break;
}
if(*(fmt + index_f) == '%'){
index_f++;
switch(*(fmt + index_f)){
case 'd':
insert = itoa(*p , str + index_s); //将参数(整形)转化为字符串，并放入以str+index_s开头的串中
index_s += insert; //index_s需要加上插入的字符串个数insert
p += 1; //p指向下一个参数地址
index_f++; //index_f指向fmt的下一个字符
break;
case 'c':
str[index_s] = (char)*p;
p +=1;
index_f++;
index_s++;
break;
case 's':
insert = strncpy(str + index_s , (char *)*p , 0); //*p为参数字符串的首地址
index_s += insert;
p += 1;
index_f++;
break;
default:
break;
}
continue;
}
if(*(fmt + index_f) == '/'){
index_f++;
switch(*(fmt + index_f)){
case 'n':
str[index_s] = 0x00; //出现转义字符时，输出之前的部分
sprintk(str + start);
index_s++; //重新设置index_s为输出后的部分
start = index_s; //start也要做相应设定
print_ctrl(); //输出回车
index_f++;
break;
case 't':
break;
default:
break;
}
continue;
}
str[index_s] = *(fmt + index_f);
index_f++;
index_s++;
}
return index_s;
}