| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering |
| * Copyright (C) 2003 Linux Networx |
| * Copyright (C) 2003 SuSE Linux AG |
| * Copyright (C) 2004 Tyan Computer |
| * Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer. |
| * |
| * 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 <console/console.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pnp.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <pc80/mc146818rtc.h> |
| #include <pc80/isa-dma.h> |
| #include <arch/io.h> |
| #include <arch/ioapic.h> |
| #include <arch/acpi.h> |
| #include <cpu/x86/lapic.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| #include <cpu/amd/powernow.h> |
| #include "chip.h" |
| |
| #define NMI_OFF 0 |
| |
| // Power restoration control register is at 0x7a |
| #define PREVIOUS_POWER_STATE 0x7A |
| |
| // Auxiliary power control register possibly located at 0xe3 |
| #define PREVIOUS_POWER_STATE_AUX 0xe3 |
| |
| #define MAINBOARD_POWER_OFF 0 |
| #define MAINBOARD_POWER_ON 1 |
| #define SLOW_CPU_OFF 0 |
| #define SLOW_CPU__ON 1 |
| |
| #ifndef CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL |
| #define CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL MAINBOARD_POWER_ON |
| #endif |
| |
| static void lpc_common_init(device_t dev) |
| { |
| u32 dword; |
| struct resource *res; |
| |
| /* I/O APIC initialization. */ |
| res = find_resource(dev, PCI_BASE_ADDRESS_1); /* IOAPIC */ |
| ASSERT(res != NULL); |
| setup_ioapic(res2mmio(res, 0, 0), 0); /* Don't rename IOAPIC ID. */ |
| |
| #if 1 |
| dword = pci_read_config32(dev, 0xe4); |
| dword |= (1 << 23); |
| pci_write_config32(dev, 0xe4, dword); |
| #endif |
| } |
| |
| static void lpc_slave_init(device_t dev) |
| { |
| lpc_common_init(dev); |
| } |
| |
| static void rom_dummy_write(device_t dev) |
| { |
| u8 old, new; |
| u8 *p; |
| |
| old = pci_read_config8(dev, 0x88); |
| new = old | 0xc0; |
| if (new != old) |
| pci_write_config8(dev, 0x88, new); |
| /* Enable write. */ |
| old = pci_read_config8(dev, 0x6d); |
| new = old | 0x01; |
| if (new != old) |
| pci_write_config8(dev, 0x6d, new); |
| |
| /* Dummy write. */ |
| p = (u8 *) 0xffffffe0; |
| old = 0; |
| *p = old; |
| old = *p; |
| |
| /* Disable write. */ |
| old = pci_read_config8(dev, 0x6d); |
| new = old & 0xfe; |
| if (new != old) |
| pci_write_config8(dev, 0x6d, new); |
| } |
| |
| unsigned pm_base = 0; |
| |
| static void lpc_init(device_t dev) |
| { |
| u8 byte, byte_old; |
| int on, nmi_option; |
| |
| lpc_common_init(dev); |
| |
| pm_base = pci_read_config32(dev, 0x60) & 0xff00; |
| printk(BIOS_INFO, "%s: pm_base = %x \n", __func__, pm_base); |
| |
| /* Power after power fail */ |
| on = CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL; |
| get_option(&on, "power_on_after_fail"); |
| byte = pci_read_config8(dev, PREVIOUS_POWER_STATE); |
| byte &= ~0x45; |
| if (!on) |
| byte |= 0x45; |
| pci_write_config8(dev, PREVIOUS_POWER_STATE, byte); |
| printk(BIOS_INFO, "set power %s after power fail\n", on ? "on" : "off"); |
| |
| /* Throttle the CPU speed down for testing. */ |
| on = SLOW_CPU_OFF; |
| get_option(&on, "slow_cpu"); |
| if (on) { |
| u16 pm10_bar; |
| u32 dword; |
| pm10_bar = (pci_read_config16(dev, 0x60) & 0xff00); |
| outl(((on << 1) + 0x10), (pm10_bar + 0x10)); |
| dword = inl(pm10_bar + 0x10); |
| on = 8 - on; |
| printk(BIOS_DEBUG, "Throttling CPU %2d.%1.1d percent.\n", |
| (on * 12) + (on >> 1), (on & 1) * 5); |
| } |
| #if 0 |
| /* Enable Port 92 fast reset (default is enabled). */ |
| byte = pci_read_config8(dev, 0xe8); |
| byte |= ~(1 << 3); |
| pci_write_config8(dev, 0xe8, byte); |
| #endif |
| |
| /* Set up NMI on errors. */ |
| byte = inb(0x70); /* RTC70 */ |
| byte_old = byte; |
| nmi_option = NMI_OFF; |
| get_option(&nmi_option, "nmi"); |
| if (nmi_option) |
| byte &= ~(1 << 7); /* Set NMI. */ |
| else |
| byte |= (1 << 7); /* Can't mask NMI from PCI-E and NMI_NOW. */ |
| if (byte != byte_old) |
| outb(byte, 0x70); |
| |
| /* Initialize the real time clock (RTC). */ |
| cmos_init(0); |
| |
| /* Initialize ISA DMA. */ |
| isa_dma_init(); |
| |
| rom_dummy_write(dev); |
| } |
| |
| static void ck804_lpc_read_resources(device_t dev) |
| { |
| struct resource *res; |
| unsigned long index; |
| |
| /* Get the normal PCI resources of this device. */ |
| /* We got one for APIC, or one more for TRAP. */ |
| pci_dev_read_resources(dev); |
| |
| /* HPET */ |
| pci_get_resource(dev, 0x44); |
| |
| /* Get resource for ACPI, SYSTEM_CONTROL, ANALOG_CONTROL. */ |
| for (index = 0x60; index <= 0x68; index += 4) /* We got another 3. */ |
| pci_get_resource(dev, index); |
| compact_resources(dev); |
| |
| /* Add an extra subtractive resource for both memory and I/O. */ |
| res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0)); |
| res->base = 0; |
| res->size = 0x1000; |
| res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | |
| IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| |
| res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0)); |
| res->base = 0xff800000; |
| res->size = 0x00800000; /* 8 MB for flash */ |
| res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | |
| IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| |
| if (dev->device != PCI_DEVICE_ID_NVIDIA_CK804_SLAVE) { |
| res = find_resource(dev, PCI_BASE_ADDRESS_1); /* IOAPIC */ |
| if (res) { |
| res->base = IO_APIC_ADDR; |
| res->flags |= IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| } |
| |
| res = find_resource(dev, 0x44); /* HPET */ |
| if (res) { |
| res->base = CONFIG_HPET_ADDRESS; |
| res->flags |= IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| } |
| } |
| } |
| |
| static void ck804_lpc_set_resources(device_t dev) |
| { |
| u8 byte; |
| struct resource *res; |
| |
| pci_dev_set_resources(dev); |
| |
| /* APIC */ |
| res = find_resource(dev, PCI_BASE_ADDRESS_1); |
| if (res) { |
| byte = pci_read_config8(dev, 0x74); |
| byte |= (1 << 1); /* enable access to PCI_BASE_ADDRESS_1 */ |
| pci_write_config8(dev, 0x74, byte); |
| pci_write_config32(dev, PCI_BASE_ADDRESS_1, res->base); |
| res->flags |= IORESOURCE_STORED; |
| report_resource_stored(dev, res, ""); |
| byte |= (1 << 0); /* enable decode of IOAPIC space */ |
| byte &= ~(1 << 1); /* hide PCI_BASE_ADDRESS_1 */ |
| pci_write_config8(dev, 0x74, byte); |
| } |
| |
| /* HPET */ |
| res = find_resource(dev, 0x44); |
| if (res) { |
| pci_write_config32(dev, 0x44, res->base|1); |
| res->flags |= IORESOURCE_STORED; |
| report_resource_stored(dev, res, ""); |
| } |
| } |
| |
| /** |
| * Enable resources for children devices. |
| * |
| * This function is called by the global enable_resources() indirectly via the |
| * device_operation::enable_resources() method of devices. |
| */ |
| static void ck804_lpc_enable_childrens_resources(device_t dev) |
| { |
| struct bus *link; |
| u32 reg, reg_var[4]; |
| int i, var_num = 0; |
| |
| reg = pci_read_config32(dev, 0xa0); |
| |
| for (link = dev->link_list; link; link = link->next) { |
| device_t child; |
| for (child = link->children; child; child = child->sibling) { |
| if (child->enabled && (child->path.type == DEVICE_PATH_PNP)) { |
| struct resource *res; |
| for (res = child->resource_list; res; res = res->next) { |
| unsigned long base, end; /* Don't need long long. */ |
| if (!(res->flags & IORESOURCE_IO)) |
| continue; |
| base = res->base; |
| end = resource_end(res); |
| printk(BIOS_DEBUG, "ck804 lpc decode:%s, base=0x%08lx, end=0x%08lx\n", dev_path(child), base, end); |
| switch (base) { |
| case 0x3f8: // COM1 |
| reg |= (1 << 0); |
| break; |
| case 0x2f8: // COM2 |
| reg |= (1 << 1); |
| break; |
| case 0x378: // Parallel 1 |
| reg |= (1 << 24); |
| break; |
| case 0x3f0: // FD0 |
| reg |= (1 << 20); |
| break; |
| case 0x220: // Audio 0 |
| reg |= (1 << 8); |
| break; |
| case 0x300: // Midi 0 |
| reg |= (1 << 12); |
| break; |
| } |
| if (base == 0x290 || base >= 0x400) { |
| /* Only 4 var; compact them? */ |
| if (var_num >= 4) |
| continue; |
| reg |= (1 << (28 + var_num)); |
| reg_var[var_num++] = (base & 0xffff) | ((end & 0xffff) << 16); |
| } |
| } |
| } |
| } |
| } |
| pci_write_config32(dev, 0xa0, reg); |
| for (i = 0; i < var_num; i++) |
| pci_write_config32(dev, 0xa8 + i * 4, reg_var[i]); |
| } |
| |
| static void ck804_lpc_enable_resources(device_t dev) |
| { |
| pci_dev_enable_resources(dev); |
| ck804_lpc_enable_childrens_resources(dev); |
| } |
| |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) |
| |
| static void southbridge_acpi_fill_ssdt_generator(device_t device) |
| { |
| amd_generate_powernow(0, 0, 0); |
| } |
| |
| #endif |
| |
| static struct device_operations lpc_ops = { |
| .read_resources = ck804_lpc_read_resources, |
| .set_resources = ck804_lpc_set_resources, |
| .enable_resources = ck804_lpc_enable_resources, |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) |
| .acpi_fill_ssdt_generator = southbridge_acpi_fill_ssdt_generator, |
| .write_acpi_tables = acpi_write_hpet, |
| #endif |
| .init = lpc_init, |
| .scan_bus = scan_lpc_bus, |
| .ops_pci = &ck804_pci_ops, |
| }; |
| |
| static const struct pci_driver lpc_driver __pci_driver = { |
| .ops = &lpc_ops, |
| .vendor = PCI_VENDOR_ID_NVIDIA, |
| .device = PCI_DEVICE_ID_NVIDIA_CK804_LPC, |
| }; |
| |
| static const struct pci_driver lpc_driver_pro __pci_driver = { |
| .ops = &lpc_ops, |
| .vendor = PCI_VENDOR_ID_NVIDIA, |
| .device = PCI_DEVICE_ID_NVIDIA_CK804_PRO, |
| }; |
| |
| static struct device_operations lpc_slave_ops = { |
| .read_resources = ck804_lpc_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) |
| .write_acpi_tables = acpi_write_hpet, |
| #endif |
| .init = lpc_slave_init, |
| .ops_pci = &ck804_pci_ops, |
| }; |
| |
| static const struct pci_driver lpc_driver_slave __pci_driver = { |
| .ops = &lpc_slave_ops, |
| .vendor = PCI_VENDOR_ID_NVIDIA, |
| .device = PCI_DEVICE_ID_NVIDIA_CK804_SLAVE, |
| }; |