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273 lines
8.8 KiB
C
273 lines
8.8 KiB
C
/*
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* QEMU PowerPC 440 Bamboo board emulation
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*
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* Copyright 2007 IBM Corporation.
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* Authors:
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* Jerone Young <jyoung5@us.ibm.com>
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* Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
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* Hollis Blanchard <hollisb@us.ibm.com>
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*
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* This work is licensed under the GNU GPL license version 2 or later.
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*
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*/
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#include "qemu/osdep.h"
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#include "qemu/units.h"
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#include "qemu/datadir.h"
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#include "qemu/error-report.h"
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#include "exec/page-protection.h"
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#include "net/net.h"
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#include "hw/pci/pci.h"
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#include "hw/boards.h"
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#include "sysemu/kvm.h"
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#include "sysemu/device_tree.h"
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#include "hw/loader.h"
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#include "elf.h"
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#include "hw/char/serial-mm.h"
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#include "hw/ppc/ppc.h"
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#include "hw/pci-host/ppc4xx.h"
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#include "sysemu/sysemu.h"
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#include "sysemu/reset.h"
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#include "hw/sysbus.h"
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#include "hw/intc/ppc-uic.h"
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#include "hw/qdev-properties.h"
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#include "qapi/error.h"
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#include <libfdt.h>
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#define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
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/* from u-boot */
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#define KERNEL_ADDR 0x1000000
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#define FDT_ADDR 0x1800000
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#define RAMDISK_ADDR 0x1900000
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#define PPC440EP_PCI_CONFIG 0xeec00000
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#define PPC440EP_PCI_INTACK 0xeed00000
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#define PPC440EP_PCI_SPECIAL 0xeed00000
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#define PPC440EP_PCI_REGS 0xef400000
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#define PPC440EP_PCI_IO 0xe8000000
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#define PPC440EP_PCI_IOLEN 0x00010000
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static hwaddr entry;
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static int bamboo_load_device_tree(MachineState *machine,
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hwaddr addr,
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hwaddr initrd_base,
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hwaddr initrd_size)
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{
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int ret = -1;
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uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(machine->ram_size) };
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char *filename;
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int fdt_size;
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void *fdt;
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uint32_t tb_freq = 400000000;
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uint32_t clock_freq = 400000000;
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filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
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if (!filename) {
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return -1;
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}
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fdt = load_device_tree(filename, &fdt_size);
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g_free(filename);
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if (fdt == NULL) {
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return -1;
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}
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/* Manipulate device tree in memory. */
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ret = qemu_fdt_setprop(fdt, "/memory", "reg", mem_reg_property,
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sizeof(mem_reg_property));
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if (ret < 0) {
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fprintf(stderr, "couldn't set /memory/reg\n");
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}
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ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
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initrd_base);
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if (ret < 0) {
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fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
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}
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ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
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(initrd_base + initrd_size));
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if (ret < 0) {
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fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
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}
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ret = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
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machine->kernel_cmdline);
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if (ret < 0) {
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fprintf(stderr, "couldn't set /chosen/bootargs\n");
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}
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qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "clock-frequency",
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clock_freq);
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qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "timebase-frequency",
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tb_freq);
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rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
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/* Set ms->fdt for 'dumpdtb' QMP/HMP command */
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machine->fdt = fdt;
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return 0;
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}
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static void main_cpu_reset(void *opaque)
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{
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PowerPCCPU *cpu = opaque;
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CPUPPCState *env = &cpu->env;
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cpu_reset(CPU(cpu));
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env->gpr[1] = (16 * MiB) - 8;
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env->gpr[3] = FDT_ADDR;
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env->nip = entry;
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/* Create a mapping spanning the 32bit addr space. */
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booke_set_tlb(&env->tlb.tlbe[0], 0, 0, 1U << 31);
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booke_set_tlb(&env->tlb.tlbe[1], 0x80000000, 0x80000000, 1U << 31);
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}
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static void bamboo_init(MachineState *machine)
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{
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const char *kernel_filename = machine->kernel_filename;
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const char *initrd_filename = machine->initrd_filename;
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MachineClass *mc = MACHINE_GET_CLASS(machine);
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unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 };
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MemoryRegion *address_space_mem = get_system_memory();
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MemoryRegion *isa = g_new(MemoryRegion, 1);
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PCIBus *pcibus;
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PowerPCCPU *cpu;
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CPUPPCState *env;
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target_long initrd_size = 0;
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DeviceState *dev;
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DeviceState *uicdev;
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SysBusDevice *uicsbd;
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int success;
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if (kvm_enabled()) {
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error_report("machine %s does not support the KVM accelerator",
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MACHINE_GET_CLASS(machine)->name);
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exit(EXIT_FAILURE);
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}
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cpu = POWERPC_CPU(cpu_create(machine->cpu_type));
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env = &cpu->env;
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if (env->mmu_model != POWERPC_MMU_BOOKE) {
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error_report("MMU model %i not supported by this machine",
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env->mmu_model);
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exit(1);
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}
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qemu_register_reset(main_cpu_reset, cpu);
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ppc_booke_timers_init(cpu, 400000000, 0);
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ppc_dcr_init(env, NULL, NULL);
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/* interrupt controller */
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uicdev = qdev_new(TYPE_PPC_UIC);
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ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(uicdev), cpu, &error_fatal);
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object_unref(OBJECT(uicdev));
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uicsbd = SYS_BUS_DEVICE(uicdev);
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sysbus_connect_irq(uicsbd, PPCUIC_OUTPUT_INT,
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qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_INT));
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sysbus_connect_irq(uicsbd, PPCUIC_OUTPUT_CINT,
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qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_CINT));
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/* SDRAM controller */
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dev = qdev_new(TYPE_PPC4xx_SDRAM_DDR);
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object_property_set_link(OBJECT(dev), "dram", OBJECT(machine->ram),
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&error_abort);
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ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev), cpu, &error_fatal);
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object_unref(OBJECT(dev));
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/* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
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sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, qdev_get_gpio_in(uicdev, 14));
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/* Enable SDRAM memory regions, this should be done by the firmware */
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ppc4xx_sdram_ddr_enable(PPC4xx_SDRAM_DDR(dev));
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/* PCI */
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dev = sysbus_create_varargs(TYPE_PPC4xx_PCI_HOST, PPC440EP_PCI_CONFIG,
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qdev_get_gpio_in(uicdev, pci_irq_nrs[0]),
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qdev_get_gpio_in(uicdev, pci_irq_nrs[1]),
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qdev_get_gpio_in(uicdev, pci_irq_nrs[2]),
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qdev_get_gpio_in(uicdev, pci_irq_nrs[3]),
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NULL);
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pcibus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
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if (!pcibus) {
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error_report("couldn't create PCI controller");
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exit(1);
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}
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memory_region_init_alias(isa, NULL, "isa_mmio",
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get_system_io(), 0, PPC440EP_PCI_IOLEN);
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memory_region_add_subregion(get_system_memory(), PPC440EP_PCI_IO, isa);
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if (serial_hd(0) != NULL) {
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serial_mm_init(address_space_mem, 0xef600300, 0,
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qdev_get_gpio_in(uicdev, 0),
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PPC_SERIAL_MM_BAUDBASE, serial_hd(0),
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DEVICE_BIG_ENDIAN);
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}
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if (serial_hd(1) != NULL) {
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serial_mm_init(address_space_mem, 0xef600400, 0,
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qdev_get_gpio_in(uicdev, 1),
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PPC_SERIAL_MM_BAUDBASE, serial_hd(1),
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DEVICE_BIG_ENDIAN);
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}
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if (pcibus) {
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/*
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* There are no PCI NICs on the Bamboo board, but there are
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* PCI slots, so we can pick whatever default model we want.
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*/
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pci_init_nic_devices(pcibus, mc->default_nic);
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}
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/* Load kernel. */
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if (kernel_filename) {
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hwaddr loadaddr = LOAD_UIMAGE_LOADADDR_INVALID;
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success = load_uimage(kernel_filename, &entry, &loadaddr, NULL,
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NULL, NULL);
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if (success < 0) {
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uint64_t elf_entry;
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success = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry,
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NULL, NULL, NULL, 1, PPC_ELF_MACHINE, 0, 0);
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entry = elf_entry;
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}
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/* XXX try again as binary */
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if (success < 0) {
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error_report("could not load kernel '%s'", kernel_filename);
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exit(1);
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}
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}
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/* Load initrd. */
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if (initrd_filename) {
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initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR,
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machine->ram_size - RAMDISK_ADDR);
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if (initrd_size < 0) {
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error_report("could not load ram disk '%s' at %x",
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initrd_filename, RAMDISK_ADDR);
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exit(1);
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}
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}
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/* If we're loading a kernel directly, we must load the device tree too. */
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if (kernel_filename) {
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if (bamboo_load_device_tree(machine, FDT_ADDR,
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RAMDISK_ADDR, initrd_size) < 0) {
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error_report("couldn't load device tree");
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exit(1);
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}
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}
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}
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static void bamboo_machine_init(MachineClass *mc)
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{
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mc->desc = "bamboo";
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mc->init = bamboo_init;
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mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440epb");
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mc->default_ram_id = "ppc4xx.sdram";
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mc->default_nic = "e1000";
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}
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DEFINE_MACHINE("bamboo", bamboo_machine_init)
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