5079a0d32f
As we move to supporting other systems we need to get rid of assembly where we can. The log2 function in src/lib is identical to the assembly one (tested for all 32-bit signed integers :-) and takes about 10 ns to run as opposed to 5ns for the non-portable assembly version. While speed is good, I think we can spare the 15 ns or so we add to boot time by using the C version only. Change-Id: Icafa565eae282c85fa5fc01b3bd1f110cd9aaa91 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/1928 Tested-by: build bot (Jenkins)
181 lines
4.8 KiB
C
181 lines
4.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2000 AG Electronics Ltd.
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* Copyright (C) 2003-2004 Linux Networx
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* Copyright (C) 2004 Tyan
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* Copyright (C) 2005 Digital Design Corporation
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* Copyright (C) 2006 Ron Minnich, LANL
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <arch/io.h>
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#include <device/device.h>
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#include <device/pnp.h>
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#include <console/console.h>
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#include <device/smbus.h>
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#include <string.h>
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#include <uart8250.h>
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#include <pc80/keyboard.h>
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#include <stdlib.h>
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#include "chip.h"
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#include "lpc47m10x.h"
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/* Forward declarations */
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static void enable_dev(device_t dev);
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static void lpc47m10x_pnp_set_resources(device_t dev);
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static void lpc47m10x_pnp_enable_resources(device_t dev);
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static void lpc47m10x_pnp_enable(device_t dev);
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static void lpc47m10x_init(device_t dev);
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static void pnp_enter_conf_state(device_t dev);
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static void pnp_exit_conf_state(device_t dev);
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// static void dump_pnp_device(device_t dev);
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struct chip_operations superio_smsc_lpc47m10x_ops = {
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CHIP_NAME("SMSC LPC47M10x Super I/O")
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.enable_dev = enable_dev
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};
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static struct device_operations ops = {
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.read_resources = pnp_read_resources,
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.set_resources = lpc47m10x_pnp_set_resources,
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.enable_resources = lpc47m10x_pnp_enable_resources,
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.enable = lpc47m10x_pnp_enable,
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.init = lpc47m10x_init,
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};
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static struct pnp_info pnp_dev_info[] = {
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{ &ops, LPC47M10X2_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
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{ &ops, LPC47M10X2_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
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{ &ops, LPC47M10X2_SP1, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
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{ &ops, LPC47M10X2_SP2, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
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{ &ops, LPC47M10X2_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, {0x07ff, 0}, {0x07ff, 4}, },
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{ &ops, LPC47M10X2_PME, PNP_IO0, { 0x0f80, 0 }, },
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};
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/**
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* Create device structures and allocate resources to devices specified in the
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* pnp_dev_info array (above).
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*
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* @param dev Pointer to structure describing a Super I/O device.
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*/
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static void enable_dev(device_t dev)
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{
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pnp_enable_devices(dev, &pnp_ops, ARRAY_SIZE(pnp_dev_info),
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pnp_dev_info);
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}
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/**
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* Configure the specified Super I/O device with the resources (I/O space,
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* etc.) that have been allocated for it.
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*
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* @param dev Pointer to structure describing a Super I/O device.
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*/
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static void lpc47m10x_pnp_set_resources(device_t dev)
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{
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pnp_enter_conf_state(dev);
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pnp_set_resources(dev);
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pnp_exit_conf_state(dev);
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}
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static void lpc47m10x_pnp_enable_resources(device_t dev)
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{
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pnp_enter_conf_state(dev);
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pnp_enable_resources(dev);
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pnp_exit_conf_state(dev);
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}
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static void lpc47m10x_pnp_enable(device_t dev)
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{
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pnp_enter_conf_state(dev);
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pnp_set_logical_device(dev);
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pnp_set_enable(dev, !!dev->enabled);
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pnp_exit_conf_state(dev);
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}
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/**
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* Initialize the specified Super I/O device.
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*
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* Devices other than COM ports and the keyboard controller are ignored.
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* For COM ports, we configure the baud rate.
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*
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* @param dev Pointer to structure describing a Super I/O device.
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*/
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static void lpc47m10x_init(device_t dev)
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{
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struct superio_smsc_lpc47m10x_config *conf = dev->chip_info;
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if (!dev->enabled)
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return;
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switch(dev->path.pnp.device) {
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case LPC47M10X2_KBC:
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pc_keyboard_init(&conf->keyboard);
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break;
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}
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}
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static void pnp_enter_conf_state(device_t dev)
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{
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outb(0x55, dev->path.pnp.port);
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}
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static void pnp_exit_conf_state(device_t dev)
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{
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outb(0xaa, dev->path.pnp.port);
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}
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#if 0
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/**
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* Print the values of all of the LPC47M10X2's configuration registers.
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*
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* NOTE: The LPC47M10X2 must be in config mode when this function is called.
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*
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* @param dev Pointer to structure describing a Super I/O device.
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*/
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static void dump_pnp_device(device_t dev)
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{
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int i;
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print_debug("\n");
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for (i = 0; i <= LPC47M10X2_MAX_CONFIG_REGISTER; i++) {
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u8 register_value;
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if ((i & 0x0f) == 0) {
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print_debug_hex8(i);
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print_debug_char(':');
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}
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/*
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* Skip over 'register' that would cause exit from
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* configuration mode.
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*/
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if (i == 0xaa)
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register_value = 0xaa;
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else
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register_value = pnp_read_config(dev, i);
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print_debug_char(' ');
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print_debug_hex8(register_value);
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if ((i & 0x0f) == 0x0f)
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print_debug("\n");
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}
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print_debug("\n");
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}
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#endif
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