Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / common / modem.c

diff --git a/qemu/roms/u-boot/common/modem.c b/qemu/roms/u-boot/common/modem.c
new file mode 100644 (file)
index 0000000..be54b10
--- /dev/null
+++ b/qemu/roms/u-boot/common/modem.c
@@ -0,0 +1,101 @@
+/*
+ * (C) Copyright 2002-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+
+/* 'inline' - We have to do it fast */
+static inline void mdm_readline(char *buf, int bufsiz)
+{
+       char c;
+       char *p;
+       int n;
+
+       n = 0;
+       p = buf;
+       for(;;) {
+               c = serial_getc();
+
+               /*              dbg("(%c)", c); */
+
+               switch(c) {
+               case '\r':
+                       break;
+               case '\n':
+                       *p = '\0';
+                       return;
+
+               default:
+                       if(n++ > bufsiz) {
+                               *p = '\0';
+                               return; /* sanity check */
+                       }
+                       *p = c;
+                       p++;
+                       break;
+               }
+       }
+}
+
+extern void  dbg(const char *fmt, ...);
+int mdm_init (void)
+{
+       char env_str[16];
+       char *init_str;
+       int i;
+       extern void enable_putc(void);
+       extern int hwflow_onoff(int);
+
+       enable_putc(); /* enable serial_putc() */
+
+#ifdef CONFIG_HWFLOW
+       init_str = getenv("mdm_flow_control");
+       if (init_str && (strcmp(init_str, "rts/cts") == 0))
+               hwflow_onoff (1);
+       else
+               hwflow_onoff(-1);
+#endif
+
+       for (i = 1;;i++) {
+               sprintf(env_str, "mdm_init%d", i);
+               if ((init_str = getenv(env_str)) != NULL) {
+                       serial_puts(init_str);
+                       serial_puts("\n");
+                       for(;;) {
+                               mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
+                               dbg("ini%d: [%s]", i, console_buffer);
+
+                               if ((strcmp(console_buffer, "OK") == 0) ||
+                                       (strcmp(console_buffer, "ERROR") == 0)) {
+                                       dbg("ini%d: cmd done", i);
+                                       break;
+                               } else /* in case we are originating call ... */
+                                       if (strncmp(console_buffer, "CONNECT", 7) == 0) {
+                                               dbg("ini%d: connect", i);
+                                               return 0;
+                                       }
+                       }
+               } else
+                       break; /* no init string - stop modem init */
+
+               udelay(100000);
+       }
+
+       udelay(100000);
+
+       /* final stage - wait for connect */
+       for(;i > 1;) { /* if 'i' > 1 - wait for connection
+                                 message from modem */
+               mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
+               dbg("ini_f: [%s]", console_buffer);
+               if (strncmp(console_buffer, "CONNECT", 7) == 0) {
+                       dbg("ini_f: connected");
+                       return 0;
+               }
+       }
+
+       return 0;
+}