| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2010 Advanced Micro Devices, Inc. |
| * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering |
| * |
| * 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 <arch/acpi.h> |
| #include <arch/acpigen.h> |
| #include <pc80/isa-dma.h> |
| #include <arch/io.h> |
| #include <arch/ioapic.h> |
| #include <cbmem.h> |
| #include <cpu/amd/powernow.h> |
| #include "sb700.h" |
| |
| unsigned long acpi_fill_mcfg(unsigned long current) |
| { |
| /* Just a dummy */ |
| return current; |
| } |
| |
| static void lpc_init(device_t dev) |
| { |
| u8 byte; |
| u32 dword; |
| device_t sm_dev; |
| |
| printk(BIOS_SPEW, "%s\n", __func__); |
| |
| /* Enable the LPC Controller */ |
| sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); |
| dword = pci_read_config32(sm_dev, 0x64); |
| dword |= 1 << 20; |
| pci_write_config32(sm_dev, 0x64, dword); |
| |
| /* Initialize isa dma */ |
| #if CONFIG_SOUTHBRIDGE_AMD_SB700_SKIP_ISA_DMA_INIT |
| printk(BIOS_DEBUG, "Skipping isa_dma_init() to avoid getting stuck.\n"); |
| #else |
| isa_dma_init(); |
| #endif |
| |
| if (!IS_ENABLED(CONFIG_SOUTHBRIDGE_AMD_SB700_DISABLE_ISA_DMA)) { |
| /* Enable DMA transaction on the LPC bus */ |
| byte = pci_read_config8(dev, 0x40); |
| byte |= (1 << 2); |
| pci_write_config8(dev, 0x40, byte); |
| } |
| |
| /* Disable the timeout mechanism on LPC */ |
| byte = pci_read_config8(dev, 0x48); |
| byte &= ~(1 << 7); |
| pci_write_config8(dev, 0x48, byte); |
| |
| /* Disable LPC MSI Capability */ |
| byte = pci_read_config8(dev, 0x78); |
| byte &= ~(1 << 1); |
| #if CONFIG_SOUTHBRIDGE_AMD_SUBTYPE_SP5100 |
| /* Disable FlowContrl, Always service the request from Host |
| * whenever there is a request from Host pending |
| */ |
| byte &= ~(1 << 0); |
| #endif |
| pci_write_config8(dev, 0x78, byte); |
| |
| cmos_check_update_date(); |
| } |
| |
| #if IS_ENABLED(CONFIG_LATE_CBMEM_INIT) |
| int acpi_get_sleep_type(void) |
| { |
| u16 tmp = inw(ACPI_PM1_CNT_BLK); |
| return ((tmp & (7 << 10)) >> 10); |
| } |
| |
| void backup_top_of_ram(uint64_t ramtop) |
| { |
| u32 dword = (u32) ramtop; |
| int nvram_pos = 0xfc, i; |
| for (i = 0; i<4; i++) { |
| outb(nvram_pos, BIOSRAM_INDEX); |
| outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA); |
| nvram_pos++; |
| } |
| } |
| #endif |
| |
| static void sb700_lpc_read_resources(device_t dev) |
| { |
| struct resource *res; |
| |
| /* Get the normal pci resources of this device */ |
| pci_dev_read_resources(dev); /* We got one for APIC, or one more for TRAP */ |
| |
| pci_get_resource(dev, 0xA0); /* SPI ROM base address */ |
| |
| /* 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; |
| |
| res = new_resource(dev, 3); /* IOAPIC */ |
| res->base = IO_APIC_ADDR; |
| res->size = 0x00001000; |
| res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| |
| compact_resources(dev); |
| } |
| |
| static void sb700_lpc_set_resources(struct device *dev) |
| { |
| struct resource *res; |
| |
| pci_dev_set_resources(dev); |
| |
| /* Special case. SPI Base Address. The SpiRomEnable should be set. */ |
| res = find_resource(dev, 0xA0); |
| pci_write_config32(dev, 0xA0, res->base | 1 << 1); |
| } |
| |
| /** |
| * @brief Enable resources for children devices |
| * |
| * @param dev the device whose children's resources are to be enabled |
| * |
| */ |
| static void sb700_lpc_enable_childrens_resources(device_t dev) |
| { |
| struct bus *link; |
| u32 reg, reg_x; |
| int var_num = 0; |
| u16 reg_var[3] = {0x0, 0x0, 0x0}; |
| u8 wiosize = pci_read_config8(dev, 0x74); |
| |
| reg = pci_read_config32(dev, 0x44); |
| reg_x = pci_read_config32(dev, 0x48); |
| |
| 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) { |
| u32 base, end; /* don't need long long */ |
| if (!(res->flags & IORESOURCE_IO)) |
| continue; |
| base = res->base; |
| end = resource_end(res); |
| printk(BIOS_DEBUG, "sb700 lpc decode:%s, base=0x%08x, end=0x%08x\n", |
| dev_path(child), base, end); |
| switch (base) { |
| case 0x60: /* KB */ |
| case 0x64: /* MS */ |
| reg |= (1 << 29); |
| break; |
| case 0x3f8: /* COM1 */ |
| reg |= (1 << 6); |
| break; |
| case 0x2f8: /* COM2 */ |
| reg |= (1 << 7); |
| break; |
| case 0x378: /* Parallel 1 */ |
| reg |= (1 << 0); |
| reg |= (1 << 1); /* + 0x778 for ECP */ |
| break; |
| case 0x3f0: /* FD0 */ |
| reg |= (1 << 26); |
| break; |
| case 0x220: /* Audio 0 */ |
| reg |= (1 << 8); |
| break; |
| case 0x300: /* Midi 0 */ |
| reg |= (1 << 18); |
| break; |
| case 0x400: |
| reg_x |= (1 << 16); |
| break; |
| case 0x480: |
| reg_x |= (1 << 17); |
| break; |
| case 0x500: |
| reg_x |= (1 << 18); |
| break; |
| case 0x580: |
| reg_x |= (1 << 19); |
| break; |
| case 0x4700: |
| reg_x |= (1 << 22); |
| break; |
| case 0xfd60: |
| reg_x |= (1 << 23); |
| break; |
| default: |
| if (var_num >= 3) |
| continue; /* only 3 var ; compact them ? */ |
| switch (var_num) { |
| case 0: |
| reg_x |= (1 << 2); |
| if ((end - base) < 16) |
| wiosize |= (1 << 0); |
| break; |
| case 1: |
| reg_x |= (1 << 24); |
| if ((end - base) < 16) |
| wiosize |= (1 << 2); |
| break; |
| case 2: |
| reg_x |= (1 << 25); |
| reg_x |= (1 << 24); |
| if ((end - base) < 16) |
| wiosize |= (1 << 3); |
| break; |
| } |
| reg_var[var_num++] = |
| base & 0xffff; |
| } |
| } |
| } |
| } |
| } |
| pci_write_config32(dev, 0x44, reg); |
| pci_write_config32(dev, 0x48, reg_x); |
| /* Set WideIO for as many IOs found (fall through is on purpose) */ |
| switch (var_num) { |
| case 2: |
| pci_write_config16(dev, 0x90, reg_var[2]); |
| case 1: |
| pci_write_config16(dev, 0x66, reg_var[1]); |
| case 0: |
| pci_write_config16(dev, 0x64, reg_var[0]); |
| break; |
| } |
| pci_write_config8(dev, 0x74, wiosize); |
| } |
| |
| static void sb700_lpc_enable_resources(device_t dev) |
| { |
| pci_dev_enable_resources(dev); |
| sb700_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(ACPI_CPU_CONTROL, 6, 1); |
| } |
| |
| #endif |
| |
| |
| static struct pci_operations lops_pci = { |
| .set_subsystem = pci_dev_set_subsystem, |
| }; |
| |
| static struct device_operations lpc_ops = { |
| .read_resources = sb700_lpc_read_resources, |
| .set_resources = sb700_lpc_set_resources, |
| .enable_resources = sb700_lpc_enable_resources, |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) |
| .write_acpi_tables = acpi_write_hpet, |
| .acpi_fill_ssdt_generator = southbridge_acpi_fill_ssdt_generator, |
| #endif |
| .init = lpc_init, |
| .scan_bus = scan_lpc_bus, |
| .ops_pci = &lops_pci, |
| }; |
| static const struct pci_driver lpc_driver __pci_driver = { |
| .ops = &lpc_ops, |
| .vendor = PCI_VENDOR_ID_ATI, |
| .device = PCI_DEVICE_ID_ATI_SB700_LPC, |
| }; |