mirror of
https://github.com/AsahiLinux/u-boot
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100 lines
1.8 KiB
C
100 lines
1.8 KiB
C
/*
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* (C) Copyright 2002-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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/* 'inline' - We have to do it fast */
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static inline void mdm_readline(char *buf, int bufsiz)
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{
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char c;
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char *p;
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int n;
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n = 0;
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p = buf;
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for(;;) {
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c = serial_getc();
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debug("(%c)", c);
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switch(c) {
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case '\r':
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break;
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case '\n':
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*p = '\0';
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return;
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default:
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if(n++ > bufsiz) {
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*p = '\0';
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return; /* sanity check */
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}
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*p = c;
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p++;
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break;
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}
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}
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}
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int mdm_init (void)
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{
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char env_str[16];
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char *init_str;
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int i;
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extern void enable_putc(void);
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extern int hwflow_onoff(int);
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enable_putc(); /* enable serial_putc() */
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#ifdef CONFIG_HWFLOW
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init_str = getenv("mdm_flow_control");
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if (init_str && (strcmp(init_str, "rts/cts") == 0))
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hwflow_onoff (1);
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else
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hwflow_onoff(-1);
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#endif
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for (i = 1;;i++) {
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sprintf(env_str, "mdm_init%d", i);
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if ((init_str = getenv(env_str)) != NULL) {
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serial_puts(init_str);
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serial_puts("\n");
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for(;;) {
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mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
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debug("ini%d: [%s]", i, console_buffer);
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if ((strcmp(console_buffer, "OK") == 0) ||
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(strcmp(console_buffer, "ERROR") == 0)) {
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debug("ini%d: cmd done", i);
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break;
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} else /* in case we are originating call ... */
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if (strncmp(console_buffer, "CONNECT", 7) == 0) {
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debug("ini%d: connect", i);
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return 0;
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}
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}
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} else
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break; /* no init string - stop modem init */
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udelay(100000);
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}
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udelay(100000);
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/* final stage - wait for connect */
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for(;i > 1;) { /* if 'i' > 1 - wait for connection
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message from modem */
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mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
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debug("ini_f: [%s]", console_buffer);
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if (strncmp(console_buffer, "CONNECT", 7) == 0) {
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debug("ini_f: connected");
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return 0;
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}
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}
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return 0;
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}
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