uart_parse_earlycon — Parse earlycon options
int uart_parse_earlycon ( | char * p, |
| unsigned char * iotype, | |
| unsigned long * addr, | |
char ** options); |
pptr to 2nd field (ie., just beyond '<name>,')
iotypeptr for decoded iotype (out)
addrptr for decoded mapbase/iobase (out)
optionsptr for <options> field; NULL if not present (out)
Decodes earlycon kernel command line parameters of the form earlycon=<name>,io|mmio|mmio32,<addr>,<options> console=<name>,io|mmio|mmio32,<addr>,<options>
The optional form
earlycon=<name>,0x<addr>,<options>
console=<name>,0x<addr>,<options>
is also accepted; the returned iotype will be UPIO_MEM.
Returns 0 on success or -EINVAL on failure