[U-Boot] [PATCH 1/2] SPL: Add YMODEM over UART load support

Hi Tom, Hi Matt,

On Tuesday, January 31, 2012, Tom Rini trini@ti.com wrote:

From: Matt Porter mporter@ti.com

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.

:-) I like this feature!

I tried something similar a few month ago for the da850evm and my own board, it worked but I never had time to finished it and submit it, it was just a hack.

For my tests I used the UART loader utility from TI to load the SPL and then minicom for loading u-boot. Do you have an automated solution for this? Would be nice to have something like this in tools/.

Signed-off-by: Matt Porter mporter@ti.com Signed-off-by: Tom Rini trini@ti.com

---

arch/arm/cpu/armv7/omap-common/Makefile | 3 + arch/arm/cpu/armv7/omap-common/spl.c | 5 ++ arch/arm/cpu/armv7/omap-common/spl_ymodem.c | 76

+++++++++++++++++++++++++++

arch/arm/include/asm/omap_common.h | 3 + common/Makefile | 3 + lib/Makefile | 3 + 6 files changed, 93 insertions(+), 0 deletions(-) create mode 100644 arch/arm/cpu/armv7/omap-common/spl_ymodem.c

[...]

diff --git a/arch/arm/cpu/armv7/omap-common/spl_ymodem.c

b/arch/arm/cpu/armv7/omap-common/spl_ymodem.c

Could this be somewhere where it's accessible for other SoC families like davinci? E.g. We have nand_spl_load.c in drivers/mtd/nand and something similar for SPI flash.

Regards, Christian

new file mode 100644 index 0000000..47663f7 --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/spl_ymodem.c @@ -0,0 +1,76 @@ +/*

• • (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);
  

+}