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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2009 One Laptop per Child, Association, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/io.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include <pc80/mc146818rtc.h>
#include <pc80/keyboard.h>
#include <pc80/i8259.h>
#include "vx800.h"
static const unsigned char pciIrqs[4] = { 0xa, 0x9, 0xb, 0xa };
static const unsigned char vgaPins[4] = { 'A', 'B', 'C', 'D' }; //only INTA
static const unsigned char slotPins[4] = { 'A', 'A', 'A', 'A' }; //all 4
static const unsigned char usbdevicePins[4] = { 'A', 'B', 'C', 'D' }; //only INTA
static const unsigned char sdioPins[4] = { 'A', 'B', 'C', 'D' }; //only INTA
static const unsigned char sd_ms_ctrl_Pins[4] = { 'B', 'C', 'D', 'A' }; //only INTA
static const unsigned char ce_ata_nf_ctrl_Pins[4] = { 'C', 'C', 'D', 'A' }; //only INTA
static const unsigned char hdacaudioPins[4] = { 'B', 'C', 'D', 'A' }; //only INTA
static unsigned char *pin_to_irq(const unsigned char *pin)
{
static unsigned char Irqs[4];
int i;
for (i = 0; i < 4; i++)
Irqs[i] = pciIrqs[pin[i] - 'A'];
return Irqs;
}
static void pci_routing_fixup(struct device *dev)
{
printk(BIOS_INFO, "%s: dev is %p\n", __FUNCTION__, dev);
/* set up PCI IRQ routing */
pci_write_config8(dev, 0x55, pciIrqs[0] << 4);
pci_write_config8(dev, 0x56, pciIrqs[1] | (pciIrqs[2] << 4));
pci_write_config8(dev, 0x57, pciIrqs[3] << 4);
/* VGA */
printk(BIOS_INFO, "setting vga\n");
pci_assign_irqs(0, 0x1, pin_to_irq(vgaPins));
/* PCI slot */
printk(BIOS_INFO, "setting pci slot\n");
pci_assign_irqs(0, 0x08, pin_to_irq(slotPins));
/* PCI slot */
printk(BIOS_INFO, "setting USB Device Controller\n");
pci_assign_irqs(0, 0x0b, pin_to_irq(usbdevicePins));
/* PCI slot */
printk(BIOS_INFO, "setting SDIO Controller\n");
pci_assign_irqs(0, 0x0c, pin_to_irq(sdioPins));
/* PCI slot */
printk(BIOS_INFO, "setting SD $ MS Controller\n");
pci_assign_irqs(0, 0x0d, pin_to_irq(sd_ms_ctrl_Pins));
/* PCI slot */
printk(BIOS_INFO, "setting CE-ATA NF Controller(Card Boot)\n");
pci_assign_irqs(0, 0x0e, pin_to_irq(ce_ata_nf_ctrl_Pins));
/* PCI slot */
printk(BIOS_INFO, "setting ide\n");
/* Standard usb components */
printk(BIOS_INFO, "setting usb1-2\n");
/* sound hardware */
printk(BIOS_INFO, "setting hdac audio\n");
pci_assign_irqs(0, 0x14, pin_to_irq(hdacaudioPins));
printk(BIOS_SPEW, "%s: DONE\n", __FUNCTION__);
}
static void setup_pm(device_t dev)
{
u16 tmp;
/* Debounce LID and PWRBTN# Inputs for 16ms. */
pci_write_config8(dev, 0x80, 0x20);
/* Set ACPI base address to IO VX800_ACPI_IO_BASE */
pci_write_config16(dev, 0x88, VX800_ACPI_IO_BASE | 1);
/* set ACPI irq to 9 */
pci_write_config8(dev, 0x82, 0x49);
/* Primary interupt channel, define wake events 0 = IRQ0 15 = IRQ15 1 = en. */
pci_write_config16(dev, 0x84, 0x609a); // 0x609a??
/* SMI output level to low, 7.5us throttle clock */
pci_write_config8(dev, 0x8d, 0x18);
/* GP Timer Control 1s */
pci_write_config8(dev, 0x93, 0x88);
/* Power Well */
pci_write_config8(dev, 0x94, 0x20); // 0x20??
/* 7 = stp to sust delay 1msec
* 6 = SUSST# Deasserted Before PWRGD for STD
*/
pci_write_config8(dev, 0x95, 0xc0); // 0xc1??
/* Disable GP2 & GP3 Timer */
pci_write_config8(dev, 0x98, 0);
/* GP2 Timer Counter */
pci_write_config8(dev, 0x99, 0xfb);
/* Multi Function Select 1 */
pci_write_config8(dev, 0xe4, 0x00);
/* Multi Function Select 2 */
pci_write_config8(dev, 0xe5, 0x41); //??
/* Enable ACPI access (and setup like award) */
pci_write_config8(dev, 0x81, 0x84);
/* Clear status events. */
outw(0xffff, VX800_ACPI_IO_BASE + 0x00);
outw(0xffff, VX800_ACPI_IO_BASE + 0x20);
outw(0xffff, VX800_ACPI_IO_BASE + 0x28);
outl(0xffffffff, VX800_ACPI_IO_BASE + 0x30);
/* Disable SCI on GPIO. */
outw(0x0, VX800_ACPI_IO_BASE + 0x22);
/* Disable SMI on GPIO. */
outw(0x0, VX800_ACPI_IO_BASE + 0x24);
/* Disable all global enable SMIs. */
outw(0x0, VX800_ACPI_IO_BASE + 0x2a);
/* All SMI off, both IDE buses ON, PSON rising edge. */
outw(0x0, VX800_ACPI_IO_BASE + 0x2c);
/* Primary activity SMI disable. */
outl(0x0, VX800_ACPI_IO_BASE + 0x34);
/* GP timer reload on none. */
outl(0x0, VX800_ACPI_IO_BASE + 0x38);
/* Disable extended IO traps. */
outb(0x0, VX800_ACPI_IO_BASE + 0x42);
tmp = inw(VX800_ACPI_IO_BASE + 0x04);
/* SCI is generated for RTC/pwrBtn/slpBtn. */
tmp |= 1;
outw(tmp, VX800_ACPI_IO_BASE + 0x04);
/* Allow SLP# signal to assert LDTSTOP_L.
* Will work for C3 and for FID/VID change.
*/
outb(0x1, VX800_ACPI_IO_BASE + 0x11);
}
static void S3_ps2_kb_ms_wakeup(struct device *dev)
{
u8 enables;
enables = pci_read_config8(dev, 0x51);
enables |= 2;
pci_write_config8(dev, 0x51, enables);
outb(0xe0, 0x2e);
outb(0x0b, 0x2f); //if 09,then only support kb wakeup
outb(0xe1, 0x2e); //set any key scan code can wakeup
outb(0x00, 0x2f);
outb(0xe9, 0x2e); //set any mouse scan code can wakeup
outb(0x00, 0x2f);
enables &= 0xd;
pci_write_config8(dev, 0x51, enables);
outb(inb(VX800_ACPI_IO_BASE + 0x02) | 0x20, VX800_ACPI_IO_BASE + 0x02); //ACPI golabe enable for sci smi trigger
outw(inw(VX800_ACPI_IO_BASE + 0x22) | 0x204, VX800_ACPI_IO_BASE + 0x22); //ACPI SCI on Internal KBC PME and mouse PME
}
static void S3_usb_wakeup(struct device *dev)
{
outw(inw(VX800_ACPI_IO_BASE + 0x22) | 0x4000, VX800_ACPI_IO_BASE + 0x22); //SCI on USB PME
}
static void S3_lid_wakeup(struct device *dev)
{
outw(inw(VX800_ACPI_IO_BASE + 0x22) | 0x800, VX800_ACPI_IO_BASE + 0x22); //SCI on LID PME
}
/* This looks good enough to work, maybe */
static void vx800_sb_init(struct device *dev)
{
unsigned char enables;
// enable the internal I/O decode
enables = pci_read_config8(dev, 0x6C);
enables |= 0x80;
pci_write_config8(dev, 0x6C, enables);
// Map 4MB of FLASH into the address space
// Set bit 6 of 0x40, because Award does it (IO recovery time)
// IMPORTANT FIX - EISA 0x4d0 decoding must be on so that PCI
// interrupts can be properly marked as level triggered.
enables = pci_read_config8(dev, 0x40);
enables |= 0x44;
pci_write_config8(dev, 0x40, enables);
/* DMA Line buffer control */
enables = pci_read_config8(dev, 0x42);
enables |= 0xf0;
pci_write_config8(dev, 0x42, enables);
/* I/O recovery time */
pci_write_config8(dev, 0x4c, 0x44);
/* ROM memory cycles go to LPC. */
pci_write_config8(dev, 0x59, 0x80);
/* Set 0x5b to 0x01 to match Award */
enables = pci_read_config8(dev, 0x5b);
enables |= 0x01;
pci_write_config8(dev, 0x5b, enables);
/* Set Read Pass Write Control Enable */
pci_write_config8(dev, 0x48, 0x0c);
/* Set 0x58 to 0x42 APIC and RTC. */
enables = pci_read_config8(dev, 0x58);
enables |= 0x41; //
pci_write_config8(dev, 0x58, enables);
/* Set bit 3 of 0x4f to match award (use INIT# as CPU reset) */
enables = pci_read_config8(dev, 0x4f);
enables |= 0x08;
pci_write_config8(dev, 0x4f, enables);
/* enable serial irq */
pci_write_config8(dev, 0x52, 0x9);
/* dma */
pci_write_config8(dev, 0x53, 0x00);
// Power management setup
setup_pm(dev);
/* set up isa bus -- i/o recovery time, ROM write enable, extend-ale */
pci_write_config8(dev, 0x40, 0x54);
// Start the rtc
cmos_init(0);
}
/* total kludge to get lxb to call our childrens set/enable functions - these are
not called unless this device has a resource to set - so set a dummy one */
static void vx800_read_resources(device_t dev)
{
struct resource *resource;
pci_dev_read_resources(dev);
resource = new_resource(dev, 1);
resource->flags |=
IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_IO |
IORESOURCE_STORED;
resource->size = 2;
resource->base = 0x2e;
}
static void vx800_set_resources(device_t dev)
{
struct resource *resource;
resource = find_resource(dev, 1);
resource->flags |= IORESOURCE_STORED;
pci_dev_set_resources(dev);
}
static void southbridge_init(struct device *dev)
{
printk(BIOS_DEBUG, "vx800 sb init\n");
vx800_sb_init(dev);
pci_routing_fixup(dev);
setup_i8259(); // make sure interupt controller is configured before keyboard init
/* turn on keyboard and RTC, no need to visit this reg twice */
pc_keyboard_init(NO_AUX_DEVICE);
printk(BIOS_DEBUG, "ps2 usb lid, you set who can wakeup system from s3 sleep\n");
S3_ps2_kb_ms_wakeup(dev);
S3_usb_wakeup(dev);
S3_lid_wakeup(dev);
/* enable acpi CPU c3 state. (c2 state need not do anything.)
#1
fadt->pm2_cnt_blk = 0x22;//to support cpu-c3
fadt->p_lvl2_lat = 0x50; //this is the coreboot source
fadt->p_lvl3_lat = 0x320;//
fadt->pm2_cnt_len = 1;//to support cpu-c3
#2
ssdt? ->every CPU has a P_BLK address. set it to 0x10 (so that "Read Processor Level3 register(PMIORx15<7:0>) to enter C3 state"---VIA vx800 P SPEC )
#3 write 0x17 in to PMIO = VX800_ACPI_IO_BASE + 0x26, following the describtion in the P-spec.
1 enable SLP# asserts in C3 state PMIORx26<1> = 1
2 enable CPUSTP# asserts in C3 state; PMIORx26<2> = 1
3 CLKRUN# is always asserted PMIORx26<3> = 0
4 Disable PCISTP# When CLKRUN# is asserted
1: PCISTP# will not assert When CLKRUN# is asserted
PMIORx26<4> = 1
5 This bit controls whether the CPU voltage is lowered when in C3/S1 state.
VRDSLP will be active in either this bit set in C3 or LVL4 register read
PMIORx26<0> =0
6 Read Processor Level3 register(PMIORx15<7:0>) to enter C3 state PMIORx15
*/
outb(0x17, VX800_ACPI_IO_BASE + 0x26);
}
static struct device_operations vx800_lpc_ops = {
.read_resources = vx800_read_resources,
.set_resources = vx800_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = southbridge_init,
.scan_bus = scan_lpc_bus,
};
static const struct pci_driver lpc_driver __pci_driver = {
.ops = &vx800_lpc_ops,
.vendor = PCI_VENDOR_ID_VIA,
.device = PCI_DEVICE_ID_VIA_VX855_LPC,
};
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