UART_PARSE_EARLYCON(9)                  16x50 UART Driver                  UART_PARSE_EARLYCON(9)



NAME
       uart_parse_earlycon - Parse earlycon options

SYNOPSIS
       int uart_parse_earlycon(char * p, unsigned char * iotype, unsigned long * addr,
                               char ** options);

ARGUMENTS
       p
           ptr to 2nd field (ie., just beyond '<name>,')

       iotype
           ptr for decoded iotype (out)

       addr
           ptr for decoded mapbase/iobase (out)

       options
           ptr for <options> field; NULL if not present (out)

DESCRIPTION
       Decodes earlycon kernel command line parameters of the form
       earlycon=<name>,io|mmio|mmio16|mmio32|mmio32be|mmio32native,<addr>,<options>
       console=<name>,io|mmio|mmio16|mmio32|mmio32be|mmio32native,<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

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                    UART_PARSE_EARLYCON(9)