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#include <stdio.h>
#include <err.h>
#include <endian.h>
#include <stdint.h>
#include <sys/types.h>
#include "lib/rs232/rs232.h"
#define ANSI_FG_RED "\033[0;31m"
/* This program pipes it's argument file to stdout prepending it */
/* with it's size (4 bytes, little endian). It is intended to be used */
/* with our bootloader (i.e. by piping kernel image to UART). */
int main(int argc, char **argv) {
char *image_file_name = argc > 1 ? argv[1] : "kernel7.img";
FILE *image_file_handle = fopen(image_file_name, "r");
if (!image_file_handle)
err(-1, "couldn't open" ANSI_FG_RED "%s", image_file_name);
if (fseek(image_file_handle, 0, SEEK_END))
err(-1, "error navigating through file");
ssize_t image_size = ftell(image_file_handle);
if (image_size < 0)
err(-1, "couldn't get image file size");
if (image_size >> 32)
err(-1, "file to big (should be smaller than 4G)");
if (fseek(image_file_handle, 0, SEEK_SET))
err(-1, "error navigating through file");
//init comport
int comport=16;
if(RS232_OpenComport(comport,115200,"8N1",0)==1)
err(1,"Error opening comport");
uint32_t image_size_le = htole32(image_size);
if (RS232_SendBuf(comport,(unsigned char*)&image_size_le,4) == 1)
err(1, "error writing number to serial");
ssize_t bytes_left = image_size;
unsigned char buf[1024];
while (bytes_left)
{
size_t bytes_read;
if ((bytes_read = fread(buf, 1, sizeof(buf), image_file_handle))
< 1)
err(-1, "error reading the file");
if (RS232_SendBuf(comport,buf,bytes_read) == 1)
err(1, "error writing to serial");
bytes_left -= bytes_read;
}
RS232_CloseComport(comport);
}
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