mirror of
https://github.com/fail0verflow/mini.git
synced 2024-06-27 13:36:06 +02:00
65 lines
1008 B
C
65 lines
1008 B
C
#include "types.h"
|
|
#include "utils.h"
|
|
#include "hollywood.h"
|
|
#include "start.h"
|
|
|
|
#define gpio_delay() udelay(100)
|
|
|
|
|
|
void send_bits(int b, int bits)
|
|
{
|
|
while(bits--)
|
|
{
|
|
if(b & (1 << bits))
|
|
set32(HW_GPIO1OUT, 0x1000);
|
|
else
|
|
clear32(HW_GPIO1OUT, 0x1000);
|
|
gpio_delay();
|
|
set32(HW_GPIO1OUT, 0x800);
|
|
gpio_delay();
|
|
clear32(HW_GPIO1OUT, 0x800);
|
|
gpio_delay();
|
|
}
|
|
}
|
|
|
|
int recv_bits(int bits)
|
|
{
|
|
int res = 0;
|
|
while(bits--)
|
|
{
|
|
res <<= 1;
|
|
set32(HW_GPIO1OUT, 0x800);
|
|
gpio_delay();
|
|
clear32(HW_GPIO1OUT, 0x800);
|
|
gpio_delay();
|
|
res |= !!(read32(HW_GPIO1IN) & 0x2000);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int seeprom_read(void *dst, int offset, int size)
|
|
{
|
|
int i;
|
|
u16 *ptr = (u16 *)dst;
|
|
u16 recv;
|
|
|
|
if(size & 1)
|
|
return -1;
|
|
|
|
clear32(HW_GPIO1OUT, 0x800);
|
|
clear32(HW_GPIO1OUT, 0x400);
|
|
gpio_delay();
|
|
|
|
for(i = 0; i < size; ++i)
|
|
{
|
|
set32(HW_GPIO1OUT, 0x400);
|
|
send_bits((0x600 | (offset + i)), 11);
|
|
recv = recv_bits(16);
|
|
*ptr++ = recv;
|
|
clear32(HW_GPIO1OUT, 0x400);
|
|
gpio_delay();
|
|
}
|
|
|
|
return size;
|
|
}
|