xflash.c

mips架构的bootloader,99左右的版本 但源代码现在没人更新了

/*************************************************************
 * File: xflash.c
 * Purpose: Program to generate self-blowing flash updates
 * Author: Phil Bunce ([e-mail])
 * Revision History:
 *	970604	Created
 *	970605	Moved writeFlash to lib/nvram.c
 *	970927	Added csum
 *	980108	Added ifdef for GHS jal indirect bug
 *	980406	Improved estimated time calc.
 *	980622	Added extern to nvInfo declaration (BSO).
 *	980827	Added ifdef for SWAPENDIAN. This just prints a message.
 */

#include <mon.h>

extern unsigned char dat1[];
extern int dat1_size;
extern Ulong dat1_csum;
extern NvInfo nvInfo;

char _drivername[] = "Flash update";

/*************************************************************
*/
main()
{
char nvmsg[40];
Uchar *src;
int machtype,i,sects,eta;
Ulong dst,csum;
Func *f;

machtype = getHostType();
printf("cputype: %d\n",machtype);
switch (machtype) {
	case 4001 :
	case 4002 :
	case 4101 :
		nvInfo.start = 0xbfc00000;
		nvInfo.width = 4;
		nvInfo.gap   = 1;
		nvInfo.nvbase  = 0;
		break;
	case 4010 :
	case 4011 :
	case 4102 :
		nvInfo.start = 0xbfc00000;
		nvInfo.width = 1;
		nvInfo.gap   = 1;
		nvInfo.nvbase  = 0;
		break;
	case 4003 :
printf("Self updating flashes are not currently supported on this processor\n");
		exit(1,machtype);
	case 64364 :
		/* only 128KB Client memory. Not enough to even download. */
	default :
		printf("unrecognized CPU type\n");
		exit(2,machtype);
	}



if (!nvCheck(nvmsg)) {
	switch (machtype) {
		case 4010 :
		case 4011 :
		case 4102 :
			nvInfo.start = 0xbfd00000;
			break;
		default :
			printf("%s: unrecognized nvram type, exiting.\n",nvmsg);
			exit(3,nvmsg);
		}
	if (!nvCheck(nvmsg)) {
		printf("%s: unrecognized nvram type, exiting.\n",nvmsg);
		exit(3,nvmsg);
		}
	}
printf("flashtype: %s\n",nvmsg);

src = dat1;
for (csum=0,i=0;i<dat1_size;i++) csum += *src++;
if (dat1_csum != csum) {
	printf("bad checksum: expected %08x got %08x.\n",dat1_csum,csum);
	exit(4,csum);
	}
printf("checksum: ok.\n");
#ifdef SWAPENDIAN
printf("Don't forget to swap the flashes if you target uses more\n");
printf("than one device.\n");
#endif
src = dat1;
dst = nvInfo.start;
sects = (dat1_size/nvInfo.type->se)+1; /* round up 980406 */
eta = (3*sects)+((dat1_size*140)/(1024*1024)); /* 980406 */
/* 980708 Noticed that 4101 estimate was 13.5% too small. 
 * Changed dat1_size mult from 128 to 140 */
printf("writing flash memories... (estimated time %d seconds)",eta);
for (i=0;i<dat1_size;i++) writeFlash((Ulong)dst++,*src++);

/* reboot */
#ifdef GHS
f = (Func *)0xbfc00000;
(* f)();
#else
(* ((Func *)0xbfc00000))();
#endif
}

do_cmd() {/* stub */}