| #include <console/console.h> |
| #include <cpu/cpu.h> |
| #include <cpu/x86/lapic_def.h> |
| #include <arch/io.h> |
| #include <arch/ioapic.h> |
| #include <stdint.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <delay.h> |
| #include <smbios.h> |
| #include <cbmem.h> |
| |
| #include "fw_cfg.h" |
| |
| #include "memory.c" |
| |
| static void cpu_pci_domain_set_resources(device_t dev) |
| { |
| u32 pci_tolm = find_pci_tolm(dev->link_list); |
| unsigned long tomk = 0, tolmk; |
| int idx; |
| |
| tomk = qemu_get_memory_size(); |
| printk(BIOS_DEBUG, "Detected %lu Kbytes (%lu MiB) RAM.\n", |
| tomk, tomk / 1024); |
| |
| /* Compute the top of Low memory */ |
| tolmk = pci_tolm >> 10; |
| if (tolmk >= tomk) { |
| /* The PCI hole does not overlap the memory. */ |
| tolmk = tomk; |
| } |
| |
| /* Report the memory regions. */ |
| idx = 10; |
| ram_resource(dev, idx++, 0, 640); |
| ram_resource(dev, idx++, 768, tolmk - 768); |
| |
| /* Leave some space for ACPI, PIRQ and MP tables */ |
| high_tables_base = (tomk * 1024) - HIGH_MEMORY_SIZE; |
| high_tables_size = HIGH_MEMORY_SIZE; |
| |
| assign_resources(dev->link_list); |
| } |
| |
| static void cpu_pci_domain_read_resources(struct device *dev) |
| { |
| struct resource *res; |
| |
| pci_domain_read_resources(dev); |
| |
| /* Reserve space for the IOAPIC. This should be in the Southbridge, |
| * but I couldn't tell which device to put it in. */ |
| res = new_resource(dev, 2); |
| res->base = IO_APIC_ADDR; |
| res->size = 0x100000UL; |
| res->limit = 0xffffffffUL; |
| res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED | |
| IORESOURCE_ASSIGNED; |
| |
| /* Reserve space for the LAPIC. There's one in every processor, but |
| * the space only needs to be reserved once, so we do it here. */ |
| res = new_resource(dev, 3); |
| res->base = LOCAL_APIC_ADDR; |
| res->size = 0x10000UL; |
| res->limit = 0xffffffffUL; |
| res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED | |
| IORESOURCE_ASSIGNED; |
| } |
| |
| #if CONFIG_GENERATE_SMBIOS_TABLES |
| static int qemu_get_smbios_data16(int handle, unsigned long *current) |
| { |
| struct smbios_type16 *t = (struct smbios_type16 *)*current; |
| int len = sizeof(struct smbios_type16); |
| |
| memset(t, 0, sizeof(struct smbios_type16)); |
| t->type = SMBIOS_PHYS_MEMORY_ARRAY; |
| t->handle = handle; |
| t->length = len - 2; |
| t->location = 3; /* Location: System Board */ |
| t->use = 3; /* System memory */ |
| t->memory_error_correction = 3; /* No error correction */ |
| t->maximum_capacity = qemu_get_memory_size(); |
| *current += len; |
| return len; |
| } |
| |
| static int qemu_get_smbios_data17(int handle, int parent_handle, unsigned long *current) |
| { |
| struct smbios_type17 *t = (struct smbios_type17 *)*current; |
| int len; |
| |
| memset(t, 0, sizeof(struct smbios_type17)); |
| t->type = SMBIOS_MEMORY_DEVICE; |
| t->handle = handle; |
| t->phys_memory_array_handle = parent_handle; |
| t->length = sizeof(struct smbios_type17) - 2; |
| t->size = qemu_get_memory_size() / 1024; |
| t->data_width = 64; |
| t->total_width = 64; |
| t->form_factor = 9; /* DIMM */ |
| t->device_locator = smbios_add_string(t->eos, "Virtual"); |
| t->memory_type = 0x12; /* DDR */ |
| t->type_detail = 0x80; /* Synchronous */ |
| t->speed = 200; |
| t->clock_speed = 200; |
| t->manufacturer = smbios_add_string(t->eos, CONFIG_MAINBOARD_VENDOR); |
| len = t->length + smbios_string_table_len(t->eos); |
| *current += len; |
| return len; |
| } |
| |
| static int qemu_get_smbios_data(device_t dev, int *handle, unsigned long *current) |
| { |
| int len; |
| len = qemu_get_smbios_data16(*handle, current); |
| len += qemu_get_smbios_data17(*handle+1, *handle, current); |
| *handle += 2; |
| return len; |
| } |
| #endif |
| static struct device_operations pci_domain_ops = { |
| .read_resources = cpu_pci_domain_read_resources, |
| .set_resources = cpu_pci_domain_set_resources, |
| .enable_resources = NULL, |
| .init = NULL, |
| .scan_bus = pci_domain_scan_bus, |
| #if CONFIG_GENERATE_SMBIOS_TABLES |
| .get_smbios_data = qemu_get_smbios_data, |
| #endif |
| }; |
| |
| static void cpu_bus_init(device_t dev) |
| { |
| initialize_cpus(dev->link_list); |
| } |
| |
| static unsigned int cpu_bus_scan(device_t bus, unsigned int max) |
| { |
| int max_cpus = fw_cfg_max_cpus(); |
| device_t cpu; |
| int i; |
| |
| if (max_cpus < 0) |
| return 0; |
| |
| /* |
| * TODO: This only handles the simple "qemu -smp $nr" case |
| * correctly. qemu also allows to specify the number of |
| * cores, threads & sockets. |
| */ |
| printk(BIOS_INFO, "QEMU: max_cpus is %d\n", max_cpus); |
| for (i = 0; i < max_cpus; i++) { |
| cpu = add_cpu_device(bus->link_list, i, 1); |
| if (cpu) |
| set_cpu_topology(cpu, 1, 0, i, 0); |
| } |
| return max_cpus; |
| } |
| |
| static void cpu_bus_noop(device_t dev) |
| { |
| } |
| |
| static struct device_operations cpu_bus_ops = { |
| .read_resources = cpu_bus_noop, |
| .set_resources = cpu_bus_noop, |
| .enable_resources = cpu_bus_noop, |
| .init = cpu_bus_init, |
| .scan_bus = cpu_bus_scan, |
| }; |
| |
| static void northbridge_enable(struct device *dev) |
| { |
| /* Set the operations if it is a special bus type */ |
| if (dev->path.type == DEVICE_PATH_DOMAIN) { |
| dev->ops = &pci_domain_ops; |
| pci_set_method(dev); |
| } |
| else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) { |
| dev->ops = &cpu_bus_ops; |
| } |
| } |
| |
| struct chip_operations mainboard_emulation_qemu_i440fx_ops = { |
| CHIP_NAME("QEMU Northbridge i440fx") |
| .enable_dev = northbridge_enable, |
| }; |