/*
* boot zImage
* setup linux parameter , command line, and the boot linux from addr
* addr : base address of linux zImage
*/
int boot_zimage(ulong addr)
{
int ret __attribute__((unused));
ulong boot_mem_base; /* base address of bootable memory 嘎唱? */
ulong to;
ulong mach_type;
boot_mem_base = SDRAM_START;
to = addr;
if (*(ulong *)(to + 9*4) != LINUX_ZIMAGE_MAGIC) {
printf("Warning: this binary is not compressed linux kernel image\n");
printf("zImage magic = 0x%08lx\n", *(ulong *)(to + 9*4));
} else {
printf("zImage magic = 0x%08lx\n", *(ulong *)(to + 9*4));
}
/* Setup linux parameters and linux command line */
setup_linux_param(boot_mem_base + LINUX_PARAM_OFFSET);
/* Get machine type */
mach_type = MACH_TYPE_TQ2440;
printf("\nnow, booting linux......\n");
call_linux(0, mach_type, to);
return 0;
}
int boot_zImage(long from, int size)
{
//puts("BootingLinux2\n\r");
int ret;
long boot_mem_base; /* base address of bootable memory */
long to;
long mach_type;
boot_mem_base = 0x30000000;
/* copy kerne image */
to = boot_mem_base + LINUX_KERNEL_OFFSET;
puts("Copy linux kernel from 0x00200000 to 0x30008000, size = 0x40000 .....\n\r ");
ret = copy_kernel_img(to, (char *)from, size);
if (ret) {
puts("failed\n\r");
return -1;
} else {
puts("Copy Kernel to SDRAM done,\n\r");
}
if (*(long *)(to + 9*4) != LINUX_ZIMAGE_MAGIC) {
puts("Warning: this binary is not compressed linux kernel image\n");
puts("zImage magic = 0x%08lx\n", *(long *)(to + 9*4));
} else {
// puts("zImage magic = 0x%08lx\n", *(long *)(to + 9*4));
;
}
/* Setup linux parameters and linux command line */
setup_linux_param(boot_mem_base + LINUX_PARAM_OFFSET);
/* Get machine type */
mach_type = MACH_TYPE_S3C2440;
puts("MACH_TYPE = 168\n\r");
/* Go Go Go */
puts("NOW, Booting Linux......\n");
call_linux(0, mach_type, to);
return 0;
}
void comdownload(void)
{
ULONG size;
UCHAR *buf;
USHORT checksum;
puts("\nNow download file from uart0...\n");
downloadAddress = _NONCACHE_STARTADDRESS;
buf = (UCHAR *)downloadAddress;
temp = buf-4;
Uart_GetKey();
#ifdef USE_UART_INT
pISR_UART0 = (ULONG)Uart0RxInt; //串口接收数据中断
ClearSubPending(BIT_SUB_RXD0);
ClearPending(BIT_UART0);
EnableSubIrq(BIT_SUB_RXD0);
EnableIrq(BIT_UART0);
#endif
while((ULONG)temp<(ULONG)buf)
{
#ifdef USE_UART_INT
Led_Display(0);
Delay(1000);
Led_Display(15);
Delay(1000);
#else
*temp++ = Uart_Getch();
#endif
} //接收文件长度,4 bytes
size = *(ULONG *)(buf-4);
downloadFileSize = size-6;
#ifdef USE_UART_INT
printf("Download File Size = %d\n", size);
#endif
while(((ULONG)temp-(ULONG)buf)<(size-4))
{
#ifdef USE_UART_INT
Led_Display(0);
Delay(1000);
Led_Display(15);
Delay(1000);
#else
*temp++ = Uart_Getch();
#endif
}
#ifdef USE_UART_INT
DisableSubIrq(BIT_SUB_RXD0);
DisableIrq(BIT_UART0);
#endif
#ifndef USE_UART_INT
printf("Download File Size = %d\n", size);
#endif
checksum = 0;
for(size=0; size<downloadFileSize; size++)
checksum += buf[size];
if(checksum!=(buf[size]|(buf[size+1]<<8))) {
puts("Checksum fail!\n");
return;
}
puts("Are you sure to run? [y/n]\n");
while(1)
{
UCHAR key = getch();
if(key=='n')
return;
if(key=='y')
break;
}
call_linux(0, 193, downloadAddress);
}