#include <arch/io.h>
#include <device/pnp_ops.h>
#include <assert.h>
#include "lpc47n217.h"

Include dependency graph for early_serial.c:

Functions
static void	pnp_enter_conf_state (pnp_devfn_t dev)

static void	pnp_exit_conf_state (pnp_devfn_t dev)

static void	lpc47n217_pnp_set_iobase (pnp_devfn_t dev, u16 iobase)
	Program the base I/O port for the specified logical device. More...

static void	lpc47n217_pnp_set_enable (pnp_devfn_t dev, int enable)
	Enable or disable the specified logical device. More...

void	lpc47n217_enable_serial (pnp_devfn_t dev, u16 iobase)
	Configure the base I/O port of the specified serial device and enable the serial device. More...

Function Documentation

◆ lpc47n217_enable_serial()

void lpc47n217_enable_serial	(	pnp_devfn_t	dev,
		u16	iobase
	)

Configure the base I/O port of the specified serial device and enable the serial device.

Parameters

dev	High 8 bits = Super I/O port, low 8 bits = logical device number.
iobase	Processor I/O port address to assign to this serial device.

Definition at line 95 of file early_serial.c.

References lpc47n217_pnp_set_enable(), lpc47n217_pnp_set_iobase(), pnp_enter_conf_state(), and pnp_exit_conf_state().

Referenced by bootblock_mainboard_early_init().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ lpc47n217_pnp_set_enable()

static void lpc47n217_pnp_set_enable	(	pnp_devfn_t	dev,
		int	enable
	)

static

Enable or disable the specified logical device.

Technically, a full disable requires setting the device's base I/O port below 0x100. We don't do that here, because we don't have access to a data structure that specifies what the 'real' base port is (when asked to enable the device). Also the function is used only to disable the device while its true base port is programmed (see lpc47n217_enable_serial() below).

Parameters