upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
1119 lines
26 KiB
1119 lines
26 KiB
/*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Serial up- and download support
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*/
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#include <common.h>
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#include <command.h>
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#include <s_record.h>
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#include <net.h>
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#include <exports.h>
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#include <xyzModem.h>
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DECLARE_GLOBAL_DATA_PTR;
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#if defined(CONFIG_CMD_LOADB)
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static ulong load_serial_ymodem (ulong offset);
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#endif
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#if defined(CONFIG_CMD_LOADS)
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static ulong load_serial (long offset);
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static int read_record (char *buf, ulong len);
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# if defined(CONFIG_CMD_SAVES)
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static int save_serial (ulong offset, ulong size);
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static int write_record (char *buf);
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#endif
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static int do_echo = 1;
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#endif
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/* -------------------------------------------------------------------- */
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#if defined(CONFIG_CMD_LOADS)
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int do_load_serial (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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long offset = 0;
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ulong addr;
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int i;
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char *env_echo;
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int rcode = 0;
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#ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
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int load_baudrate, current_baudrate;
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load_baudrate = current_baudrate = gd->baudrate;
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#endif
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if (((env_echo = getenv("loads_echo")) != NULL) && (*env_echo == '1')) {
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do_echo = 1;
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} else {
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do_echo = 0;
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}
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#ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
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if (argc >= 2) {
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offset = simple_strtol(argv[1], NULL, 16);
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}
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if (argc == 3) {
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load_baudrate = (int)simple_strtoul(argv[2], NULL, 10);
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/* default to current baudrate */
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if (load_baudrate == 0)
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load_baudrate = current_baudrate;
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}
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if (load_baudrate != current_baudrate) {
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printf ("## Switch baudrate to %d bps and press ENTER ...\n",
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load_baudrate);
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udelay(50000);
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gd->baudrate = load_baudrate;
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serial_setbrg ();
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udelay(50000);
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for (;;) {
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if (getc() == '\r')
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break;
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}
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}
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#else /* ! CONFIG_SYS_LOADS_BAUD_CHANGE */
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if (argc == 2) {
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offset = simple_strtol(argv[1], NULL, 16);
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}
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#endif /* CONFIG_SYS_LOADS_BAUD_CHANGE */
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printf ("## Ready for S-Record download ...\n");
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addr = load_serial (offset);
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/*
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* Gather any trailing characters (for instance, the ^D which
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* is sent by 'cu' after sending a file), and give the
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* box some time (100 * 1 ms)
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*/
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for (i=0; i<100; ++i) {
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if (tstc()) {
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(void) getc();
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}
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udelay(1000);
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}
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if (addr == ~0) {
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printf ("## S-Record download aborted\n");
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rcode = 1;
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} else {
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printf ("## Start Addr = 0x%08lX\n", addr);
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load_addr = addr;
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}
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#ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
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if (load_baudrate != current_baudrate) {
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printf ("## Switch baudrate to %d bps and press ESC ...\n",
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current_baudrate);
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udelay (50000);
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gd->baudrate = current_baudrate;
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serial_setbrg ();
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udelay (50000);
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for (;;) {
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if (getc() == 0x1B) /* ESC */
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break;
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}
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}
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#endif
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return rcode;
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}
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static ulong
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load_serial (long offset)
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{
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char record[SREC_MAXRECLEN + 1]; /* buffer for one S-Record */
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char binbuf[SREC_MAXBINLEN]; /* buffer for binary data */
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int binlen; /* no. of data bytes in S-Rec. */
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int type; /* return code for record type */
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ulong addr; /* load address from S-Record */
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ulong size; /* number of bytes transferred */
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char buf[32];
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ulong store_addr;
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ulong start_addr = ~0;
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ulong end_addr = 0;
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int line_count = 0;
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while (read_record(record, SREC_MAXRECLEN + 1) >= 0) {
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type = srec_decode (record, &binlen, &addr, binbuf);
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if (type < 0) {
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return (~0); /* Invalid S-Record */
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}
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switch (type) {
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case SREC_DATA2:
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case SREC_DATA3:
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case SREC_DATA4:
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store_addr = addr + offset;
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#ifndef CONFIG_SYS_NO_FLASH
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if (addr2info(store_addr)) {
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int rc;
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rc = flash_write((char *)binbuf,store_addr,binlen);
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if (rc != 0) {
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flash_perror (rc);
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return (~0);
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}
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} else
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#endif
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{
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memcpy ((char *)(store_addr), binbuf, binlen);
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}
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if ((store_addr) < start_addr)
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start_addr = store_addr;
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if ((store_addr + binlen - 1) > end_addr)
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end_addr = store_addr + binlen - 1;
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break;
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case SREC_END2:
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case SREC_END3:
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case SREC_END4:
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udelay (10000);
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size = end_addr - start_addr + 1;
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printf ("\n"
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"## First Load Addr = 0x%08lX\n"
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"## Last Load Addr = 0x%08lX\n"
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"## Total Size = 0x%08lX = %ld Bytes\n",
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start_addr, end_addr, size, size
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);
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flush_cache (start_addr, size);
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sprintf(buf, "%lX", size);
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setenv("filesize", buf);
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return (addr);
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case SREC_START:
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break;
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default:
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break;
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}
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if (!do_echo) { /* print a '.' every 100 lines */
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if ((++line_count % 100) == 0)
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putc ('.');
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}
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}
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return (~0); /* Download aborted */
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}
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static int
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read_record (char *buf, ulong len)
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{
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char *p;
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char c;
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--len; /* always leave room for terminating '\0' byte */
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for (p=buf; p < buf+len; ++p) {
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c = getc(); /* read character */
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if (do_echo)
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putc (c); /* ... and echo it */
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switch (c) {
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case '\r':
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case '\n':
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*p = '\0';
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return (p - buf);
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case '\0':
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case 0x03: /* ^C - Control C */
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return (-1);
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default:
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*p = c;
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}
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/* Check for the console hangup (if any different from serial) */
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if (gd->jt[XF_getc] != getc) {
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if (ctrlc()) {
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return (-1);
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}
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}
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}
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/* line too long - truncate */
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*p = '\0';
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return (p - buf);
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}
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#if defined(CONFIG_CMD_SAVES)
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int do_save_serial (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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ulong offset = 0;
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ulong size = 0;
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#ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
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int save_baudrate, current_baudrate;
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save_baudrate = current_baudrate = gd->baudrate;
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#endif
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if (argc >= 2) {
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offset = simple_strtoul(argv[1], NULL, 16);
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}
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#ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
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if (argc >= 3) {
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size = simple_strtoul(argv[2], NULL, 16);
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}
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if (argc == 4) {
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save_baudrate = (int)simple_strtoul(argv[3], NULL, 10);
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/* default to current baudrate */
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if (save_baudrate == 0)
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save_baudrate = current_baudrate;
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}
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if (save_baudrate != current_baudrate) {
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printf ("## Switch baudrate to %d bps and press ENTER ...\n",
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save_baudrate);
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udelay(50000);
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gd->baudrate = save_baudrate;
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serial_setbrg ();
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udelay(50000);
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for (;;) {
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if (getc() == '\r')
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break;
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}
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}
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#else /* ! CONFIG_SYS_LOADS_BAUD_CHANGE */
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if (argc == 3) {
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size = simple_strtoul(argv[2], NULL, 16);
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}
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#endif /* CONFIG_SYS_LOADS_BAUD_CHANGE */
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printf ("## Ready for S-Record upload, press ENTER to proceed ...\n");
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for (;;) {
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if (getc() == '\r')
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break;
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}
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if(save_serial (offset, size)) {
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printf ("## S-Record upload aborted\n");
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} else {
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printf ("## S-Record upload complete\n");
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}
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#ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
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if (save_baudrate != current_baudrate) {
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printf ("## Switch baudrate to %d bps and press ESC ...\n",
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(int)current_baudrate);
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udelay (50000);
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gd->baudrate = current_baudrate;
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serial_setbrg ();
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udelay (50000);
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for (;;) {
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if (getc() == 0x1B) /* ESC */
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break;
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}
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}
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#endif
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return 0;
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}
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#define SREC3_START "S0030000FC\n"
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#define SREC3_FORMAT "S3%02X%08lX%s%02X\n"
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#define SREC3_END "S70500000000FA\n"
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#define SREC_BYTES_PER_RECORD 16
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static int save_serial (ulong address, ulong count)
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{
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int i, c, reclen, checksum, length;
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char *hex = "0123456789ABCDEF";
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char record[2*SREC_BYTES_PER_RECORD+16]; /* buffer for one S-Record */
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char data[2*SREC_BYTES_PER_RECORD+1]; /* buffer for hex data */
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reclen = 0;
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checksum = 0;
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if(write_record(SREC3_START)) /* write the header */
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return (-1);
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do {
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if(count) { /* collect hex data in the buffer */
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c = *(volatile uchar*)(address + reclen); /* get one byte */
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checksum += c; /* accumulate checksum */
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data[2*reclen] = hex[(c>>4)&0x0f];
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data[2*reclen+1] = hex[c & 0x0f];
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data[2*reclen+2] = '\0';
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++reclen;
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--count;
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}
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if(reclen == SREC_BYTES_PER_RECORD || count == 0) {
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/* enough data collected for one record: dump it */
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if(reclen) { /* build & write a data record: */
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/* address + data + checksum */
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length = 4 + reclen + 1;
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/* accumulate length bytes into checksum */
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for(i = 0; i < 2; i++)
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checksum += (length >> (8*i)) & 0xff;
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/* accumulate address bytes into checksum: */
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for(i = 0; i < 4; i++)
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checksum += (address >> (8*i)) & 0xff;
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/* make proper checksum byte: */
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checksum = ~checksum & 0xff;
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/* output one record: */
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sprintf(record, SREC3_FORMAT, length, address, data, checksum);
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if(write_record(record))
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return (-1);
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}
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address += reclen; /* increment address */
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checksum = 0;
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reclen = 0;
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}
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}
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while(count);
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if(write_record(SREC3_END)) /* write the final record */
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return (-1);
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return(0);
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}
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static int
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write_record (char *buf)
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{
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char c;
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while((c = *buf++))
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putc(c);
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/* Check for the console hangup (if any different from serial) */
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if (ctrlc()) {
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return (-1);
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}
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return (0);
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}
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# endif
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#endif
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#if defined(CONFIG_CMD_LOADB)
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/*
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* loadb command (load binary) included
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*/
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#define XON_CHAR 17
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#define XOFF_CHAR 19
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#define START_CHAR 0x01
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#define ETX_CHAR 0x03
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#define END_CHAR 0x0D
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#define SPACE 0x20
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#define K_ESCAPE 0x23
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#define SEND_TYPE 'S'
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#define DATA_TYPE 'D'
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#define ACK_TYPE 'Y'
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#define NACK_TYPE 'N'
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#define BREAK_TYPE 'B'
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#define tochar(x) ((char) (((x) + SPACE) & 0xff))
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#define untochar(x) ((int) (((x) - SPACE) & 0xff))
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static void set_kerm_bin_mode(unsigned long *);
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static int k_recv(void);
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static ulong load_serial_bin (ulong offset);
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char his_eol; /* character he needs at end of packet */
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int his_pad_count; /* number of pad chars he needs */
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char his_pad_char; /* pad chars he needs */
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char his_quote; /* quote chars he'll use */
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int do_load_serial_bin (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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ulong offset = 0;
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ulong addr;
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int load_baudrate, current_baudrate;
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int rcode = 0;
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char *s;
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/* pre-set offset from CONFIG_SYS_LOAD_ADDR */
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offset = CONFIG_SYS_LOAD_ADDR;
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/* pre-set offset from $loadaddr */
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if ((s = getenv("loadaddr")) != NULL) {
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offset = simple_strtoul(s, NULL, 16);
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}
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load_baudrate = current_baudrate = gd->baudrate;
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if (argc >= 2) {
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offset = simple_strtoul(argv[1], NULL, 16);
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}
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if (argc == 3) {
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load_baudrate = (int)simple_strtoul(argv[2], NULL, 10);
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|
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/* default to current baudrate */
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if (load_baudrate == 0)
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load_baudrate = current_baudrate;
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}
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if (load_baudrate != current_baudrate) {
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printf ("## Switch baudrate to %d bps and press ENTER ...\n",
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load_baudrate);
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udelay(50000);
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gd->baudrate = load_baudrate;
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serial_setbrg ();
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udelay(50000);
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for (;;) {
|
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if (getc() == '\r')
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break;
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}
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}
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|
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if (strcmp(argv[0],"loady")==0) {
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printf ("## Ready for binary (ymodem) download "
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"to 0x%08lX at %d bps...\n",
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offset,
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load_baudrate);
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addr = load_serial_ymodem (offset);
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} else {
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printf ("## Ready for binary (kermit) download "
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"to 0x%08lX at %d bps...\n",
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offset,
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load_baudrate);
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addr = load_serial_bin (offset);
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if (addr == ~0) {
|
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load_addr = 0;
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printf ("## Binary (kermit) download aborted\n");
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rcode = 1;
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} else {
|
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printf ("## Start Addr = 0x%08lX\n", addr);
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load_addr = addr;
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}
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}
|
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if (load_baudrate != current_baudrate) {
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printf ("## Switch baudrate to %d bps and press ESC ...\n",
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current_baudrate);
|
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udelay (50000);
|
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gd->baudrate = current_baudrate;
|
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serial_setbrg ();
|
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udelay (50000);
|
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for (;;) {
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if (getc() == 0x1B) /* ESC */
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break;
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}
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}
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return rcode;
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}
|
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|
|
|
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static ulong load_serial_bin (ulong offset)
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{
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int size, i;
|
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char buf[32];
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|
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set_kerm_bin_mode ((ulong *) offset);
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size = k_recv ();
|
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|
|
/*
|
|
* Gather any trailing characters (for instance, the ^D which
|
|
* is sent by 'cu' after sending a file), and give the
|
|
* box some time (100 * 1 ms)
|
|
*/
|
|
for (i=0; i<100; ++i) {
|
|
if (tstc()) {
|
|
(void) getc();
|
|
}
|
|
udelay(1000);
|
|
}
|
|
|
|
flush_cache (offset, size);
|
|
|
|
printf("## Total Size = 0x%08x = %d Bytes\n", size, size);
|
|
sprintf(buf, "%X", size);
|
|
setenv("filesize", buf);
|
|
|
|
return offset;
|
|
}
|
|
|
|
void send_pad (void)
|
|
{
|
|
int count = his_pad_count;
|
|
|
|
while (count-- > 0)
|
|
putc (his_pad_char);
|
|
}
|
|
|
|
/* converts escaped kermit char to binary char */
|
|
char ktrans (char in)
|
|
{
|
|
if ((in & 0x60) == 0x40) {
|
|
return (char) (in & ~0x40);
|
|
} else if ((in & 0x7f) == 0x3f) {
|
|
return (char) (in | 0x40);
|
|
} else
|
|
return in;
|
|
}
|
|
|
|
int chk1 (char *buffer)
|
|
{
|
|
int total = 0;
|
|
|
|
while (*buffer) {
|
|
total += *buffer++;
|
|
}
|
|
return (int) ((total + ((total >> 6) & 0x03)) & 0x3f);
|
|
}
|
|
|
|
void s1_sendpacket (char *packet)
|
|
{
|
|
send_pad ();
|
|
while (*packet) {
|
|
putc (*packet++);
|
|
}
|
|
}
|
|
|
|
static char a_b[24];
|
|
void send_ack (int n)
|
|
{
|
|
a_b[0] = START_CHAR;
|
|
a_b[1] = tochar (3);
|
|
a_b[2] = tochar (n);
|
|
a_b[3] = ACK_TYPE;
|
|
a_b[4] = '\0';
|
|
a_b[4] = tochar (chk1 (&a_b[1]));
|
|
a_b[5] = his_eol;
|
|
a_b[6] = '\0';
|
|
s1_sendpacket (a_b);
|
|
}
|
|
|
|
void send_nack (int n)
|
|
{
|
|
a_b[0] = START_CHAR;
|
|
a_b[1] = tochar (3);
|
|
a_b[2] = tochar (n);
|
|
a_b[3] = NACK_TYPE;
|
|
a_b[4] = '\0';
|
|
a_b[4] = tochar (chk1 (&a_b[1]));
|
|
a_b[5] = his_eol;
|
|
a_b[6] = '\0';
|
|
s1_sendpacket (a_b);
|
|
}
|
|
|
|
|
|
void (*os_data_init) (void);
|
|
void (*os_data_char) (char new_char);
|
|
static int os_data_state, os_data_state_saved;
|
|
static char *os_data_addr, *os_data_addr_saved;
|
|
static char *bin_start_address;
|
|
|
|
static void bin_data_init (void)
|
|
{
|
|
os_data_state = 0;
|
|
os_data_addr = bin_start_address;
|
|
}
|
|
|
|
static void os_data_save (void)
|
|
{
|
|
os_data_state_saved = os_data_state;
|
|
os_data_addr_saved = os_data_addr;
|
|
}
|
|
|
|
static void os_data_restore (void)
|
|
{
|
|
os_data_state = os_data_state_saved;
|
|
os_data_addr = os_data_addr_saved;
|
|
}
|
|
|
|
static void bin_data_char (char new_char)
|
|
{
|
|
switch (os_data_state) {
|
|
case 0: /* data */
|
|
*os_data_addr++ = new_char;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void set_kerm_bin_mode (unsigned long *addr)
|
|
{
|
|
bin_start_address = (char *) addr;
|
|
os_data_init = bin_data_init;
|
|
os_data_char = bin_data_char;
|
|
}
|
|
|
|
|
|
/* k_data_* simply handles the kermit escape translations */
|
|
static int k_data_escape, k_data_escape_saved;
|
|
void k_data_init (void)
|
|
{
|
|
k_data_escape = 0;
|
|
os_data_init ();
|
|
}
|
|
|
|
void k_data_save (void)
|
|
{
|
|
k_data_escape_saved = k_data_escape;
|
|
os_data_save ();
|
|
}
|
|
|
|
void k_data_restore (void)
|
|
{
|
|
k_data_escape = k_data_escape_saved;
|
|
os_data_restore ();
|
|
}
|
|
|
|
void k_data_char (char new_char)
|
|
{
|
|
if (k_data_escape) {
|
|
/* last char was escape - translate this character */
|
|
os_data_char (ktrans (new_char));
|
|
k_data_escape = 0;
|
|
} else {
|
|
if (new_char == his_quote) {
|
|
/* this char is escape - remember */
|
|
k_data_escape = 1;
|
|
} else {
|
|
/* otherwise send this char as-is */
|
|
os_data_char (new_char);
|
|
}
|
|
}
|
|
}
|
|
|
|
#define SEND_DATA_SIZE 20
|
|
char send_parms[SEND_DATA_SIZE];
|
|
char *send_ptr;
|
|
|
|
/* handle_send_packet interprits the protocol info and builds and
|
|
sends an appropriate ack for what we can do */
|
|
void handle_send_packet (int n)
|
|
{
|
|
int length = 3;
|
|
int bytes;
|
|
|
|
/* initialize some protocol parameters */
|
|
his_eol = END_CHAR; /* default end of line character */
|
|
his_pad_count = 0;
|
|
his_pad_char = '\0';
|
|
his_quote = K_ESCAPE;
|
|
|
|
/* ignore last character if it filled the buffer */
|
|
if (send_ptr == &send_parms[SEND_DATA_SIZE - 1])
|
|
--send_ptr;
|
|
bytes = send_ptr - send_parms; /* how many bytes we'll process */
|
|
do {
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle MAXL - max length */
|
|
/* ignore what he says - most I'll take (here) is 94 */
|
|
a_b[++length] = tochar (94);
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle TIME - time you should wait for my packets */
|
|
/* ignore what he says - don't wait for my ack longer than 1 second */
|
|
a_b[++length] = tochar (1);
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle NPAD - number of pad chars I need */
|
|
/* remember what he says - I need none */
|
|
his_pad_count = untochar (send_parms[2]);
|
|
a_b[++length] = tochar (0);
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle PADC - pad chars I need */
|
|
/* remember what he says - I need none */
|
|
his_pad_char = ktrans (send_parms[3]);
|
|
a_b[++length] = 0x40; /* He should ignore this */
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle EOL - end of line he needs */
|
|
/* remember what he says - I need CR */
|
|
his_eol = untochar (send_parms[4]);
|
|
a_b[++length] = tochar (END_CHAR);
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle QCTL - quote control char he'll use */
|
|
/* remember what he says - I'll use '#' */
|
|
his_quote = send_parms[5];
|
|
a_b[++length] = '#';
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle QBIN - 8-th bit prefixing */
|
|
/* ignore what he says - I refuse */
|
|
a_b[++length] = 'N';
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle CHKT - the clock check type */
|
|
/* ignore what he says - I do type 1 (for now) */
|
|
a_b[++length] = '1';
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle REPT - the repeat prefix */
|
|
/* ignore what he says - I refuse (for now) */
|
|
a_b[++length] = 'N';
|
|
if (bytes-- <= 0)
|
|
break;
|
|
/* handle CAPAS - the capabilities mask */
|
|
/* ignore what he says - I only do long packets - I don't do windows */
|
|
a_b[++length] = tochar (2); /* only long packets */
|
|
a_b[++length] = tochar (0); /* no windows */
|
|
a_b[++length] = tochar (94); /* large packet msb */
|
|
a_b[++length] = tochar (94); /* large packet lsb */
|
|
} while (0);
|
|
|
|
a_b[0] = START_CHAR;
|
|
a_b[1] = tochar (length);
|
|
a_b[2] = tochar (n);
|
|
a_b[3] = ACK_TYPE;
|
|
a_b[++length] = '\0';
|
|
a_b[length] = tochar (chk1 (&a_b[1]));
|
|
a_b[++length] = his_eol;
|
|
a_b[++length] = '\0';
|
|
s1_sendpacket (a_b);
|
|
}
|
|
|
|
/* k_recv receives a OS Open image file over kermit line */
|
|
static int k_recv (void)
|
|
{
|
|
char new_char;
|
|
char k_state, k_state_saved;
|
|
int sum;
|
|
int done;
|
|
int length;
|
|
int n, last_n;
|
|
int len_lo, len_hi;
|
|
|
|
/* initialize some protocol parameters */
|
|
his_eol = END_CHAR; /* default end of line character */
|
|
his_pad_count = 0;
|
|
his_pad_char = '\0';
|
|
his_quote = K_ESCAPE;
|
|
|
|
/* initialize the k_recv and k_data state machine */
|
|
done = 0;
|
|
k_state = 0;
|
|
k_data_init ();
|
|
k_state_saved = k_state;
|
|
k_data_save ();
|
|
n = 0; /* just to get rid of a warning */
|
|
last_n = -1;
|
|
|
|
/* expect this "type" sequence (but don't check):
|
|
S: send initiate
|
|
F: file header
|
|
D: data (multiple)
|
|
Z: end of file
|
|
B: break transmission
|
|
*/
|
|
|
|
/* enter main loop */
|
|
while (!done) {
|
|
/* set the send packet pointer to begining of send packet parms */
|
|
send_ptr = send_parms;
|
|
|
|
/* With each packet, start summing the bytes starting with the length.
|
|
Save the current sequence number.
|
|
Note the type of the packet.
|
|
If a character less than SPACE (0x20) is received - error.
|
|
*/
|
|
|
|
#if 0
|
|
/* OLD CODE, Prior to checking sequence numbers */
|
|
/* first have all state machines save current states */
|
|
k_state_saved = k_state;
|
|
k_data_save ();
|
|
#endif
|
|
|
|
/* get a packet */
|
|
/* wait for the starting character or ^C */
|
|
for (;;) {
|
|
switch (getc ()) {
|
|
case START_CHAR: /* start packet */
|
|
goto START;
|
|
case ETX_CHAR: /* ^C waiting for packet */
|
|
return (0);
|
|
default:
|
|
;
|
|
}
|
|
}
|
|
START:
|
|
/* get length of packet */
|
|
sum = 0;
|
|
new_char = getc ();
|
|
if ((new_char & 0xE0) == 0)
|
|
goto packet_error;
|
|
sum += new_char & 0xff;
|
|
length = untochar (new_char);
|
|
/* get sequence number */
|
|
new_char = getc ();
|
|
if ((new_char & 0xE0) == 0)
|
|
goto packet_error;
|
|
sum += new_char & 0xff;
|
|
n = untochar (new_char);
|
|
--length;
|
|
|
|
/* NEW CODE - check sequence numbers for retried packets */
|
|
/* Note - this new code assumes that the sequence number is correctly
|
|
* received. Handling an invalid sequence number adds another layer
|
|
* of complexity that may not be needed - yet! At this time, I'm hoping
|
|
* that I don't need to buffer the incoming data packets and can write
|
|
* the data into memory in real time.
|
|
*/
|
|
if (n == last_n) {
|
|
/* same sequence number, restore the previous state */
|
|
k_state = k_state_saved;
|
|
k_data_restore ();
|
|
} else {
|
|
/* new sequence number, checkpoint the download */
|
|
last_n = n;
|
|
k_state_saved = k_state;
|
|
k_data_save ();
|
|
}
|
|
/* END NEW CODE */
|
|
|
|
/* get packet type */
|
|
new_char = getc ();
|
|
if ((new_char & 0xE0) == 0)
|
|
goto packet_error;
|
|
sum += new_char & 0xff;
|
|
k_state = new_char;
|
|
--length;
|
|
/* check for extended length */
|
|
if (length == -2) {
|
|
/* (length byte was 0, decremented twice) */
|
|
/* get the two length bytes */
|
|
new_char = getc ();
|
|
if ((new_char & 0xE0) == 0)
|
|
goto packet_error;
|
|
sum += new_char & 0xff;
|
|
len_hi = untochar (new_char);
|
|
new_char = getc ();
|
|
if ((new_char & 0xE0) == 0)
|
|
goto packet_error;
|
|
sum += new_char & 0xff;
|
|
len_lo = untochar (new_char);
|
|
length = len_hi * 95 + len_lo;
|
|
/* check header checksum */
|
|
new_char = getc ();
|
|
if ((new_char & 0xE0) == 0)
|
|
goto packet_error;
|
|
if (new_char != tochar ((sum + ((sum >> 6) & 0x03)) & 0x3f))
|
|
goto packet_error;
|
|
sum += new_char & 0xff;
|
|
/* --length; */ /* new length includes only data and block check to come */
|
|
}
|
|
/* bring in rest of packet */
|
|
while (length > 1) {
|
|
new_char = getc ();
|
|
if ((new_char & 0xE0) == 0)
|
|
goto packet_error;
|
|
sum += new_char & 0xff;
|
|
--length;
|
|
if (k_state == DATA_TYPE) {
|
|
/* pass on the data if this is a data packet */
|
|
k_data_char (new_char);
|
|
} else if (k_state == SEND_TYPE) {
|
|
/* save send pack in buffer as is */
|
|
*send_ptr++ = new_char;
|
|
/* if too much data, back off the pointer */
|
|
if (send_ptr >= &send_parms[SEND_DATA_SIZE])
|
|
--send_ptr;
|
|
}
|
|
}
|
|
/* get and validate checksum character */
|
|
new_char = getc ();
|
|
if ((new_char & 0xE0) == 0)
|
|
goto packet_error;
|
|
if (new_char != tochar ((sum + ((sum >> 6) & 0x03)) & 0x3f))
|
|
goto packet_error;
|
|
/* get END_CHAR */
|
|
new_char = getc ();
|
|
if (new_char != END_CHAR) {
|
|
packet_error:
|
|
/* restore state machines */
|
|
k_state = k_state_saved;
|
|
k_data_restore ();
|
|
/* send a negative acknowledge packet in */
|
|
send_nack (n);
|
|
} else if (k_state == SEND_TYPE) {
|
|
/* crack the protocol parms, build an appropriate ack packet */
|
|
handle_send_packet (n);
|
|
} else {
|
|
/* send simple acknowledge packet in */
|
|
send_ack (n);
|
|
/* quit if end of transmission */
|
|
if (k_state == BREAK_TYPE)
|
|
done = 1;
|
|
}
|
|
}
|
|
return ((ulong) os_data_addr - (ulong) bin_start_address);
|
|
}
|
|
|
|
static int getcxmodem(void) {
|
|
if (tstc())
|
|
return (getc());
|
|
return -1;
|
|
}
|
|
static ulong load_serial_ymodem (ulong offset)
|
|
{
|
|
int size;
|
|
char buf[32];
|
|
int err;
|
|
int res;
|
|
connection_info_t info;
|
|
char ymodemBuf[1024];
|
|
ulong store_addr = ~0;
|
|
ulong addr = 0;
|
|
|
|
size = 0;
|
|
info.mode = xyzModem_ymodem;
|
|
res = xyzModem_stream_open (&info, &err);
|
|
if (!res) {
|
|
|
|
while ((res =
|
|
xyzModem_stream_read (ymodemBuf, 1024, &err)) > 0) {
|
|
store_addr = addr + offset;
|
|
size += res;
|
|
addr += res;
|
|
#ifndef CONFIG_SYS_NO_FLASH
|
|
if (addr2info (store_addr)) {
|
|
int rc;
|
|
|
|
rc = flash_write ((char *) ymodemBuf,
|
|
store_addr, res);
|
|
if (rc != 0) {
|
|
flash_perror (rc);
|
|
return (~0);
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
memcpy ((char *) (store_addr), ymodemBuf,
|
|
res);
|
|
}
|
|
|
|
}
|
|
} else {
|
|
printf ("%s\n", xyzModem_error (err));
|
|
}
|
|
|
|
xyzModem_stream_close (&err);
|
|
xyzModem_stream_terminate (false, &getcxmodem);
|
|
|
|
|
|
flush_cache (offset, size);
|
|
|
|
printf ("## Total Size = 0x%08x = %d Bytes\n", size, size);
|
|
sprintf (buf, "%X", size);
|
|
setenv ("filesize", buf);
|
|
|
|
return offset;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_CMD_LOADS)
|
|
|
|
#ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
|
|
U_BOOT_CMD(
|
|
loads, 3, 0, do_load_serial,
|
|
"load S-Record file over serial line",
|
|
"[ off ] [ baud ]\n"
|
|
" - load S-Record file over serial line"
|
|
" with offset 'off' and baudrate 'baud'"
|
|
);
|
|
|
|
#else /* ! CONFIG_SYS_LOADS_BAUD_CHANGE */
|
|
U_BOOT_CMD(
|
|
loads, 2, 0, do_load_serial,
|
|
"load S-Record file over serial line",
|
|
"[ off ]\n"
|
|
" - load S-Record file over serial line with offset 'off'"
|
|
);
|
|
#endif /* CONFIG_SYS_LOADS_BAUD_CHANGE */
|
|
|
|
/*
|
|
* SAVES always requires LOADS support, but not vice versa
|
|
*/
|
|
|
|
|
|
#if defined(CONFIG_CMD_SAVES)
|
|
#ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
|
|
U_BOOT_CMD(
|
|
saves, 4, 0, do_save_serial,
|
|
"save S-Record file over serial line",
|
|
"[ off ] [size] [ baud ]\n"
|
|
" - save S-Record file over serial line"
|
|
" with offset 'off', size 'size' and baudrate 'baud'"
|
|
);
|
|
#else /* ! CONFIG_SYS_LOADS_BAUD_CHANGE */
|
|
U_BOOT_CMD(
|
|
saves, 3, 0, do_save_serial,
|
|
"save S-Record file over serial line",
|
|
"[ off ] [size]\n"
|
|
" - save S-Record file over serial line with offset 'off' and size 'size'"
|
|
);
|
|
#endif /* CONFIG_SYS_LOADS_BAUD_CHANGE */
|
|
#endif
|
|
#endif
|
|
|
|
|
|
#if defined(CONFIG_CMD_LOADB)
|
|
U_BOOT_CMD(
|
|
loadb, 3, 0, do_load_serial_bin,
|
|
"load binary file over serial line (kermit mode)",
|
|
"[ off ] [ baud ]\n"
|
|
" - load binary file over serial line"
|
|
" with offset 'off' and baudrate 'baud'"
|
|
);
|
|
|
|
U_BOOT_CMD(
|
|
loady, 3, 0, do_load_serial_bin,
|
|
"load binary file over serial line (ymodem mode)",
|
|
"[ off ] [ baud ]\n"
|
|
" - load binary file over serial line"
|
|
" with offset 'off' and baudrate 'baud'"
|
|
);
|
|
|
|
#endif
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_CMD_HWFLOW)
|
|
int do_hwflow (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
extern int hwflow_onoff(int);
|
|
|
|
if (argc == 2) {
|
|
if (strcmp(argv[1], "off") == 0)
|
|
hwflow_onoff(-1);
|
|
else
|
|
if (strcmp(argv[1], "on") == 0)
|
|
hwflow_onoff(1);
|
|
else
|
|
return cmd_usage(cmdtp);
|
|
}
|
|
printf("RTS/CTS hardware flow control: %s\n", hwflow_onoff(0) ? "on" : "off");
|
|
return 0;
|
|
}
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
U_BOOT_CMD(
|
|
hwflow, 2, 0, do_hwflow,
|
|
"turn RTS/CTS hardware flow control in serial line on/off",
|
|
"[on|off]"
|
|
);
|
|
|
|
#endif
|
|
|