u-boot/arch/arm/cpu/armv7/omap-common/spl_ymodem.c
Matt Porter 24de357a30 SPL: Add YMODEM over UART load support
Adds support for loading U-Boot from UART using YMODEM protocol.
If YMODEM support is enabled in SPL and the romcode indicates
that SPL loaded via UART then SPL will wait for start of a
YMODEM transfer via the console port.

Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
2012-03-26 23:09:25 +02:00

76 lines
1.9 KiB
C

/*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2011
* Texas Instruments, <www.ti.com>
*
* Matt Porter <mporter@ti.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <xyzModem.h>
#include <asm/u-boot.h>
#include <asm/utils.h>
#include <asm/arch/sys_proto.h>
#include <asm/omap_common.h>
#define BUF_SIZE 1024
static int getcymodem(void) {
if (tstc())
return (getc());
return -1;
}
void spl_ymodem_load_image(void)
{
int size = 0;
int err;
int res;
int ret;
connection_info_t info;
char buf[BUF_SIZE];
ulong store_addr = ~0;
ulong addr = 0;
info.mode = xyzModem_ymodem;
ret = xyzModem_stream_open(&info, &err);
if (!ret) {
while ((res =
xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
if (addr == 0)
spl_parse_image_header((struct image_header *)buf);
store_addr = addr + spl_image.load_addr;
size += res;
addr += res;
memcpy((char *)(store_addr), buf, res);
}
} else {
printf("spl: ymodem err - %s\n", xyzModem_error(err));
hang();
}
xyzModem_stream_close(&err);
xyzModem_stream_terminate(false, &getcymodem);
printf("Loaded %d bytes\n", size);
}