static void parse_line(unsigned channel, const char *line, unsigned *baud, unsigned *clk)
{
if (line == NULL) return;
if(*line != '.' && *line != '\0') {
dbg_device[channel].base = strtopaddr(line, (char **)&line, 16);
if(*line == '^') dbg_device[channel].shift = strtoul(line+1, (char **)&line, 0);
}
if(*line == '.') ++line;
if(*line != '.' && *line != '\0') *baud = strtoul(line, (char **)&line, 0);
if(*line == '.') ++line;
if(*line != '.' && *line != '\0') *clk = strtoul(line, (char **)&line, 0);
}
/*
* Syntax: base^shift.baud.clock.alt
* Where:
*
* base = physical address (0x8005000 = UART3, 0x80010000 = UART1)
* shift = not used by driver code (typically set to 0)
* baud = baud rate
* clock = clock frequency (typically 3686400, but may be different)
* alt = 'A' if port uses alternate GPIO pins for Rx/Tx
*/
static void
parse_line(unsigned channel, const char *line, unsigned *baud, unsigned *clk, int *alt)
{
/*
* Get device base address and register stride
*/
if (*line != '.' && *line != '\0') {
dbg_device[channel].base = strtopaddr(line, (char **)&line, 16);
if (*line == '^')
dbg_device[channel].shift = strtoul(line+1, (char **)&line, 0);
}
/*
* Get baud rate
*/
if (*line == '.')
++line;
if (*line != '.' && *line != '\0')
*baud = strtoul(line, (char **)&line, 0);
/*
* Get clock rate
*/
if (*line == '.')
++line;
if (*line != '.' && *line != '\0')
*clk = strtoul(line, (char **)&line, 0);
/*
* Check if port uses alternate GPIO pins
*/
if (*line == '.')
++line;
if (*line != '\0')
*alt = (*line == 'A');
}
unsigned long
strtoul(const char *nptr, char **endptr, int base) {
//Assuming that sizeof(paddr_t) >= sizeof(unsigned long)
return strtopaddr(nptr, endptr, base);
}
