diff options
Diffstat (limited to 'src/hw/ppc/e500.c')
| -rw-r--r-- | src/hw/ppc/e500.c | 1081 |
1 files changed, 1081 insertions, 0 deletions
diff --git a/src/hw/ppc/e500.c b/src/hw/ppc/e500.c new file mode 100644 index 0000000..b3418db --- /dev/null +++ b/src/hw/ppc/e500.c @@ -0,0 +1,1081 @@ +/* + * QEMU PowerPC e500-based platforms + * + * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: Yu Liu, <yu.liu@freescale.com> + * + * This file is derived from hw/ppc440_bamboo.c, + * the copyright for that material belongs to the original owners. + * + * This 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; either version 2 of the License, or + * (at your option) any later version. + */ + +#include "config.h" +#include "qemu-common.h" +#include "e500.h" +#include "e500-ccsr.h" +#include "net/net.h" +#include "qemu/config-file.h" +#include "hw/hw.h" +#include "hw/char/serial.h" +#include "hw/pci/pci.h" +#include "hw/boards.h" +#include "sysemu/sysemu.h" +#include "sysemu/kvm.h" +#include "kvm_ppc.h" +#include "sysemu/device_tree.h" +#include "hw/ppc/openpic.h" +#include "hw/ppc/ppc.h" +#include "hw/loader.h" +#include "elf.h" +#include "hw/sysbus.h" +#include "exec/address-spaces.h" +#include "qemu/host-utils.h" +#include "hw/pci-host/ppce500.h" +#include "qemu/error-report.h" +#include "hw/platform-bus.h" +#include "hw/net/fsl_etsec/etsec.h" + +#define EPAPR_MAGIC (0x45504150) +#define BINARY_DEVICE_TREE_FILE "mpc8544ds.dtb" +#define DTC_LOAD_PAD 0x1800000 +#define DTC_PAD_MASK 0xFFFFF +#define DTB_MAX_SIZE (8 * 1024 * 1024) +#define INITRD_LOAD_PAD 0x2000000 +#define INITRD_PAD_MASK 0xFFFFFF + +#define RAM_SIZES_ALIGN (64UL << 20) + +/* TODO: parameterize */ +#define MPC8544_CCSRBAR_SIZE 0x00100000ULL +#define MPC8544_MPIC_REGS_OFFSET 0x40000ULL +#define MPC8544_MSI_REGS_OFFSET 0x41600ULL +#define MPC8544_SERIAL0_REGS_OFFSET 0x4500ULL +#define MPC8544_SERIAL1_REGS_OFFSET 0x4600ULL +#define MPC8544_PCI_REGS_OFFSET 0x8000ULL +#define MPC8544_PCI_REGS_SIZE 0x1000ULL +#define MPC8544_UTIL_OFFSET 0xe0000ULL +#define MPC8XXX_GPIO_OFFSET 0x000FF000ULL +#define MPC8XXX_GPIO_IRQ 47 + +struct boot_info +{ + uint32_t dt_base; + uint32_t dt_size; + uint32_t entry; +}; + +static uint32_t *pci_map_create(void *fdt, uint32_t mpic, int first_slot, + int nr_slots, int *len) +{ + int i = 0; + int slot; + int pci_irq; + int host_irq; + int last_slot = first_slot + nr_slots; + uint32_t *pci_map; + + *len = nr_slots * 4 * 7 * sizeof(uint32_t); + pci_map = g_malloc(*len); + + for (slot = first_slot; slot < last_slot; slot++) { + for (pci_irq = 0; pci_irq < 4; pci_irq++) { + pci_map[i++] = cpu_to_be32(slot << 11); + pci_map[i++] = cpu_to_be32(0x0); + pci_map[i++] = cpu_to_be32(0x0); + pci_map[i++] = cpu_to_be32(pci_irq + 1); + pci_map[i++] = cpu_to_be32(mpic); + host_irq = ppce500_pci_map_irq_slot(slot, pci_irq); + pci_map[i++] = cpu_to_be32(host_irq + 1); + pci_map[i++] = cpu_to_be32(0x1); + } + } + + assert((i * sizeof(uint32_t)) == *len); + + return pci_map; +} + +static void dt_serial_create(void *fdt, unsigned long long offset, + const char *soc, const char *mpic, + const char *alias, int idx, bool defcon) +{ + char ser[128]; + + snprintf(ser, sizeof(ser), "%s/serial@%llx", soc, offset); + qemu_fdt_add_subnode(fdt, ser); + qemu_fdt_setprop_string(fdt, ser, "device_type", "serial"); + qemu_fdt_setprop_string(fdt, ser, "compatible", "ns16550"); + qemu_fdt_setprop_cells(fdt, ser, "reg", offset, 0x100); + qemu_fdt_setprop_cell(fdt, ser, "cell-index", idx); + qemu_fdt_setprop_cell(fdt, ser, "clock-frequency", 0); + qemu_fdt_setprop_cells(fdt, ser, "interrupts", 42, 2); + qemu_fdt_setprop_phandle(fdt, ser, "interrupt-parent", mpic); + qemu_fdt_setprop_string(fdt, "/aliases", alias, ser); + + if (defcon) { + qemu_fdt_setprop_string(fdt, "/chosen", "linux,stdout-path", ser); + } +} + +static void create_dt_mpc8xxx_gpio(void *fdt, const char *soc, const char *mpic) +{ + hwaddr mmio0 = MPC8XXX_GPIO_OFFSET; + int irq0 = MPC8XXX_GPIO_IRQ; + gchar *node = g_strdup_printf("%s/gpio@%"PRIx64, soc, mmio0); + gchar *poweroff = g_strdup_printf("%s/power-off", soc); + int gpio_ph; + + qemu_fdt_add_subnode(fdt, node); + qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,qoriq-gpio"); + qemu_fdt_setprop_cells(fdt, node, "reg", mmio0, 0x1000); + qemu_fdt_setprop_cells(fdt, node, "interrupts", irq0, 0x2); + qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", mpic); + qemu_fdt_setprop_cells(fdt, node, "#gpio-cells", 2); + qemu_fdt_setprop(fdt, node, "gpio-controller", NULL, 0); + gpio_ph = qemu_fdt_alloc_phandle(fdt); + qemu_fdt_setprop_cell(fdt, node, "phandle", gpio_ph); + qemu_fdt_setprop_cell(fdt, node, "linux,phandle", gpio_ph); + + /* Power Off Pin */ + qemu_fdt_add_subnode(fdt, poweroff); + qemu_fdt_setprop_string(fdt, poweroff, "compatible", "gpio-poweroff"); + qemu_fdt_setprop_cells(fdt, poweroff, "gpios", gpio_ph, 0, 0); + + g_free(node); + g_free(poweroff); +} + +typedef struct PlatformDevtreeData { + void *fdt; + const char *mpic; + int irq_start; + const char *node; + PlatformBusDevice *pbus; +} PlatformDevtreeData; + +static int create_devtree_etsec(SysBusDevice *sbdev, PlatformDevtreeData *data) +{ + eTSEC *etsec = ETSEC_COMMON(sbdev); + PlatformBusDevice *pbus = data->pbus; + hwaddr mmio0 = platform_bus_get_mmio_addr(pbus, sbdev, 0); + int irq0 = platform_bus_get_irqn(pbus, sbdev, 0); + int irq1 = platform_bus_get_irqn(pbus, sbdev, 1); + int irq2 = platform_bus_get_irqn(pbus, sbdev, 2); + gchar *node = g_strdup_printf("/platform/ethernet@%"PRIx64, mmio0); + gchar *group = g_strdup_printf("%s/queue-group", node); + void *fdt = data->fdt; + + assert((int64_t)mmio0 >= 0); + assert(irq0 >= 0); + assert(irq1 >= 0); + assert(irq2 >= 0); + + qemu_fdt_add_subnode(fdt, node); + qemu_fdt_setprop_string(fdt, node, "device_type", "network"); + qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,etsec2"); + qemu_fdt_setprop_string(fdt, node, "model", "eTSEC"); + qemu_fdt_setprop(fdt, node, "local-mac-address", etsec->conf.macaddr.a, 6); + qemu_fdt_setprop_cells(fdt, node, "fixed-link", 0, 1, 1000, 0, 0); + + qemu_fdt_add_subnode(fdt, group); + qemu_fdt_setprop_cells(fdt, group, "reg", mmio0, 0x1000); + qemu_fdt_setprop_cells(fdt, group, "interrupts", + data->irq_start + irq0, 0x2, + data->irq_start + irq1, 0x2, + data->irq_start + irq2, 0x2); + + g_free(node); + g_free(group); + + return 0; +} + +static int sysbus_device_create_devtree(SysBusDevice *sbdev, void *opaque) +{ + PlatformDevtreeData *data = opaque; + bool matched = false; + + if (object_dynamic_cast(OBJECT(sbdev), TYPE_ETSEC_COMMON)) { + create_devtree_etsec(sbdev, data); + matched = true; + } + + if (!matched) { + error_report("Device %s is not supported by this machine yet.", + qdev_fw_name(DEVICE(sbdev))); + exit(1); + } + + return 0; +} + +static void platform_bus_create_devtree(PPCE500Params *params, void *fdt, + const char *mpic) +{ + gchar *node = g_strdup_printf("/platform@%"PRIx64, params->platform_bus_base); + const char platcomp[] = "qemu,platform\0simple-bus"; + uint64_t addr = params->platform_bus_base; + uint64_t size = params->platform_bus_size; + int irq_start = params->platform_bus_first_irq; + PlatformBusDevice *pbus; + DeviceState *dev; + + /* Create a /platform node that we can put all devices into */ + + qemu_fdt_add_subnode(fdt, node); + qemu_fdt_setprop(fdt, node, "compatible", platcomp, sizeof(platcomp)); + + /* Our platform bus region is less than 32bit big, so 1 cell is enough for + address and size */ + qemu_fdt_setprop_cells(fdt, node, "#size-cells", 1); + qemu_fdt_setprop_cells(fdt, node, "#address-cells", 1); + qemu_fdt_setprop_cells(fdt, node, "ranges", 0, addr >> 32, addr, size); + + qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", mpic); + + dev = qdev_find_recursive(sysbus_get_default(), TYPE_PLATFORM_BUS_DEVICE); + pbus = PLATFORM_BUS_DEVICE(dev); + + /* We can only create dt nodes for dynamic devices when they're ready */ + if (pbus->done_gathering) { + PlatformDevtreeData data = { + .fdt = fdt, + .mpic = mpic, + .irq_start = irq_start, + .node = node, + .pbus = pbus, + }; + + /* Loop through all dynamic sysbus devices and create nodes for them */ + foreach_dynamic_sysbus_device(sysbus_device_create_devtree, &data); + } + + g_free(node); +} + +static int ppce500_load_device_tree(MachineState *machine, + PPCE500Params *params, + hwaddr addr, + hwaddr initrd_base, + hwaddr initrd_size, + hwaddr kernel_base, + hwaddr kernel_size, + bool dry_run) +{ + CPUPPCState *env = first_cpu->env_ptr; + int ret = -1; + uint64_t mem_reg_property[] = { 0, cpu_to_be64(machine->ram_size) }; + int fdt_size; + void *fdt; + uint8_t hypercall[16]; + uint32_t clock_freq = 400000000; + uint32_t tb_freq = 400000000; + int i; + char compatible_sb[] = "fsl,mpc8544-immr\0simple-bus"; + char soc[128]; + char mpic[128]; + uint32_t mpic_ph; + uint32_t msi_ph; + char gutil[128]; + char pci[128]; + char msi[128]; + uint32_t *pci_map = NULL; + int len; + uint32_t pci_ranges[14] = + { + 0x2000000, 0x0, params->pci_mmio_bus_base, + params->pci_mmio_base >> 32, params->pci_mmio_base, + 0x0, 0x20000000, + + 0x1000000, 0x0, 0x0, + params->pci_pio_base >> 32, params->pci_pio_base, + 0x0, 0x10000, + }; + QemuOpts *machine_opts = qemu_get_machine_opts(); + const char *dtb_file = qemu_opt_get(machine_opts, "dtb"); + const char *toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible"); + + if (dtb_file) { + char *filename; + filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_file); + if (!filename) { + goto out; + } + + fdt = load_device_tree(filename, &fdt_size); + g_free(filename); + if (!fdt) { + goto out; + } + goto done; + } + + fdt = create_device_tree(&fdt_size); + if (fdt == NULL) { + goto out; + } + + /* Manipulate device tree in memory. */ + qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 2); + qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 2); + + qemu_fdt_add_subnode(fdt, "/memory"); + qemu_fdt_setprop_string(fdt, "/memory", "device_type", "memory"); + qemu_fdt_setprop(fdt, "/memory", "reg", mem_reg_property, + sizeof(mem_reg_property)); + + qemu_fdt_add_subnode(fdt, "/chosen"); + if (initrd_size) { + ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", + initrd_base); + if (ret < 0) { + fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n"); + } + + ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", + (initrd_base + initrd_size)); + if (ret < 0) { + fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n"); + } + + } + + if (kernel_base != -1ULL) { + qemu_fdt_setprop_cells(fdt, "/chosen", "qemu,boot-kernel", + kernel_base >> 32, kernel_base, + kernel_size >> 32, kernel_size); + } + + ret = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", + machine->kernel_cmdline); + if (ret < 0) + fprintf(stderr, "couldn't set /chosen/bootargs\n"); + + if (kvm_enabled()) { + /* Read out host's frequencies */ + clock_freq = kvmppc_get_clockfreq(); + tb_freq = kvmppc_get_tbfreq(); + + /* indicate KVM hypercall interface */ + qemu_fdt_add_subnode(fdt, "/hypervisor"); + qemu_fdt_setprop_string(fdt, "/hypervisor", "compatible", + "linux,kvm"); + kvmppc_get_hypercall(env, hypercall, sizeof(hypercall)); + qemu_fdt_setprop(fdt, "/hypervisor", "hcall-instructions", + hypercall, sizeof(hypercall)); + /* if KVM supports the idle hcall, set property indicating this */ + if (kvmppc_get_hasidle(env)) { + qemu_fdt_setprop(fdt, "/hypervisor", "has-idle", NULL, 0); + } + } + + /* Create CPU nodes */ + qemu_fdt_add_subnode(fdt, "/cpus"); + qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 1); + qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0); + + /* We need to generate the cpu nodes in reverse order, so Linux can pick + the first node as boot node and be happy */ + for (i = smp_cpus - 1; i >= 0; i--) { + CPUState *cpu; + PowerPCCPU *pcpu; + char cpu_name[128]; + uint64_t cpu_release_addr = params->spin_base + (i * 0x20); + + cpu = qemu_get_cpu(i); + if (cpu == NULL) { + continue; + } + env = cpu->env_ptr; + pcpu = POWERPC_CPU(cpu); + + snprintf(cpu_name, sizeof(cpu_name), "/cpus/PowerPC,8544@%x", + ppc_get_vcpu_dt_id(pcpu)); + qemu_fdt_add_subnode(fdt, cpu_name); + qemu_fdt_setprop_cell(fdt, cpu_name, "clock-frequency", clock_freq); + qemu_fdt_setprop_cell(fdt, cpu_name, "timebase-frequency", tb_freq); + qemu_fdt_setprop_string(fdt, cpu_name, "device_type", "cpu"); + qemu_fdt_setprop_cell(fdt, cpu_name, "reg", + ppc_get_vcpu_dt_id(pcpu)); + qemu_fdt_setprop_cell(fdt, cpu_name, "d-cache-line-size", + env->dcache_line_size); + qemu_fdt_setprop_cell(fdt, cpu_name, "i-cache-line-size", + env->icache_line_size); + qemu_fdt_setprop_cell(fdt, cpu_name, "d-cache-size", 0x8000); + qemu_fdt_setprop_cell(fdt, cpu_name, "i-cache-size", 0x8000); + qemu_fdt_setprop_cell(fdt, cpu_name, "bus-frequency", 0); + if (cpu->cpu_index) { + qemu_fdt_setprop_string(fdt, cpu_name, "status", "disabled"); + qemu_fdt_setprop_string(fdt, cpu_name, "enable-method", + "spin-table"); + qemu_fdt_setprop_u64(fdt, cpu_name, "cpu-release-addr", + cpu_release_addr); + } else { + qemu_fdt_setprop_string(fdt, cpu_name, "status", "okay"); + } + } + + qemu_fdt_add_subnode(fdt, "/aliases"); + /* XXX These should go into their respective devices' code */ + snprintf(soc, sizeof(soc), "/soc@%"PRIx64, params->ccsrbar_base); + qemu_fdt_add_subnode(fdt, soc); + qemu_fdt_setprop_string(fdt, soc, "device_type", "soc"); + qemu_fdt_setprop(fdt, soc, "compatible", compatible_sb, + sizeof(compatible_sb)); + qemu_fdt_setprop_cell(fdt, soc, "#address-cells", 1); + qemu_fdt_setprop_cell(fdt, soc, "#size-cells", 1); + qemu_fdt_setprop_cells(fdt, soc, "ranges", 0x0, + params->ccsrbar_base >> 32, params->ccsrbar_base, + MPC8544_CCSRBAR_SIZE); + /* XXX should contain a reasonable value */ + qemu_fdt_setprop_cell(fdt, soc, "bus-frequency", 0); + + snprintf(mpic, sizeof(mpic), "%s/pic@%llx", soc, MPC8544_MPIC_REGS_OFFSET); + qemu_fdt_add_subnode(fdt, mpic); + qemu_fdt_setprop_string(fdt, mpic, "device_type", "open-pic"); + qemu_fdt_setprop_string(fdt, mpic, "compatible", "fsl,mpic"); + qemu_fdt_setprop_cells(fdt, mpic, "reg", MPC8544_MPIC_REGS_OFFSET, + 0x40000); + qemu_fdt_setprop_cell(fdt, mpic, "#address-cells", 0); + qemu_fdt_setprop_cell(fdt, mpic, "#interrupt-cells", 2); + mpic_ph = qemu_fdt_alloc_phandle(fdt); + qemu_fdt_setprop_cell(fdt, mpic, "phandle", mpic_ph); + qemu_fdt_setprop_cell(fdt, mpic, "linux,phandle", mpic_ph); + qemu_fdt_setprop(fdt, mpic, "interrupt-controller", NULL, 0); + + /* + * We have to generate ser1 first, because Linux takes the first + * device it finds in the dt as serial output device. And we generate + * devices in reverse order to the dt. + */ + if (serial_hds[1]) { + dt_serial_create(fdt, MPC8544_SERIAL1_REGS_OFFSET, + soc, mpic, "serial1", 1, false); + } + + if (serial_hds[0]) { + dt_serial_create(fdt, MPC8544_SERIAL0_REGS_OFFSET, + soc, mpic, "serial0", 0, true); + } + + snprintf(gutil, sizeof(gutil), "%s/global-utilities@%llx", soc, + MPC8544_UTIL_OFFSET); + qemu_fdt_add_subnode(fdt, gutil); + qemu_fdt_setprop_string(fdt, gutil, "compatible", "fsl,mpc8544-guts"); + qemu_fdt_setprop_cells(fdt, gutil, "reg", MPC8544_UTIL_OFFSET, 0x1000); + qemu_fdt_setprop(fdt, gutil, "fsl,has-rstcr", NULL, 0); + + snprintf(msi, sizeof(msi), "/%s/msi@%llx", soc, MPC8544_MSI_REGS_OFFSET); + qemu_fdt_add_subnode(fdt, msi); + qemu_fdt_setprop_string(fdt, msi, "compatible", "fsl,mpic-msi"); + qemu_fdt_setprop_cells(fdt, msi, "reg", MPC8544_MSI_REGS_OFFSET, 0x200); + msi_ph = qemu_fdt_alloc_phandle(fdt); + qemu_fdt_setprop_cells(fdt, msi, "msi-available-ranges", 0x0, 0x100); + qemu_fdt_setprop_phandle(fdt, msi, "interrupt-parent", mpic); + qemu_fdt_setprop_cells(fdt, msi, "interrupts", + 0xe0, 0x0, + 0xe1, 0x0, + 0xe2, 0x0, + 0xe3, 0x0, + 0xe4, 0x0, + 0xe5, 0x0, + 0xe6, 0x0, + 0xe7, 0x0); + qemu_fdt_setprop_cell(fdt, msi, "phandle", msi_ph); + qemu_fdt_setprop_cell(fdt, msi, "linux,phandle", msi_ph); + + snprintf(pci, sizeof(pci), "/pci@%llx", + params->ccsrbar_base + MPC8544_PCI_REGS_OFFSET); + qemu_fdt_add_subnode(fdt, pci); + qemu_fdt_setprop_cell(fdt, pci, "cell-index", 0); + qemu_fdt_setprop_string(fdt, pci, "compatible", "fsl,mpc8540-pci"); + qemu_fdt_setprop_string(fdt, pci, "device_type", "pci"); + qemu_fdt_setprop_cells(fdt, pci, "interrupt-map-mask", 0xf800, 0x0, + 0x0, 0x7); + pci_map = pci_map_create(fdt, qemu_fdt_get_phandle(fdt, mpic), + params->pci_first_slot, params->pci_nr_slots, + &len); + qemu_fdt_setprop(fdt, pci, "interrupt-map", pci_map, len); + qemu_fdt_setprop_phandle(fdt, pci, "interrupt-parent", mpic); + qemu_fdt_setprop_cells(fdt, pci, "interrupts", 24, 2); + qemu_fdt_setprop_cells(fdt, pci, "bus-range", 0, 255); + for (i = 0; i < 14; i++) { + pci_ranges[i] = cpu_to_be32(pci_ranges[i]); + } + qemu_fdt_setprop_cell(fdt, pci, "fsl,msi", msi_ph); + qemu_fdt_setprop(fdt, pci, "ranges", pci_ranges, sizeof(pci_ranges)); + qemu_fdt_setprop_cells(fdt, pci, "reg", + (params->ccsrbar_base + MPC8544_PCI_REGS_OFFSET) >> 32, + (params->ccsrbar_base + MPC8544_PCI_REGS_OFFSET), + 0, 0x1000); + qemu_fdt_setprop_cell(fdt, pci, "clock-frequency", 66666666); + qemu_fdt_setprop_cell(fdt, pci, "#interrupt-cells", 1); + qemu_fdt_setprop_cell(fdt, pci, "#size-cells", 2); + qemu_fdt_setprop_cell(fdt, pci, "#address-cells", 3); + qemu_fdt_setprop_string(fdt, "/aliases", "pci0", pci); + + if (params->has_mpc8xxx_gpio) { + create_dt_mpc8xxx_gpio(fdt, soc, mpic); + } + + if (params->has_platform_bus) { + platform_bus_create_devtree(params, fdt, mpic); + } + + params->fixup_devtree(params, fdt); + + if (toplevel_compat) { + qemu_fdt_setprop(fdt, "/", "compatible", toplevel_compat, + strlen(toplevel_compat) + 1); + } + +done: + if (!dry_run) { + qemu_fdt_dumpdtb(fdt, fdt_size); + cpu_physical_memory_write(addr, fdt, fdt_size); + } + ret = fdt_size; + +out: + g_free(pci_map); + + return ret; +} + +typedef struct DeviceTreeParams { + MachineState *machine; + PPCE500Params params; + hwaddr addr; + hwaddr initrd_base; + hwaddr initrd_size; + hwaddr kernel_base; + hwaddr kernel_size; + Notifier notifier; +} DeviceTreeParams; + +static void ppce500_reset_device_tree(void *opaque) +{ + DeviceTreeParams *p = opaque; + ppce500_load_device_tree(p->machine, &p->params, p->addr, p->initrd_base, + p->initrd_size, p->kernel_base, p->kernel_size, + false); +} + +static void ppce500_init_notify(Notifier *notifier, void *data) +{ + DeviceTreeParams *p = container_of(notifier, DeviceTreeParams, notifier); + ppce500_reset_device_tree(p); +} + +static int ppce500_prep_device_tree(MachineState *machine, + PPCE500Params *params, + hwaddr addr, + hwaddr initrd_base, + hwaddr initrd_size, + hwaddr kernel_base, + hwaddr kernel_size) +{ + DeviceTreeParams *p = g_new(DeviceTreeParams, 1); + p->machine = machine; + p->params = *params; + p->addr = addr; + p->initrd_base = initrd_base; + p->initrd_size = initrd_size; + p->kernel_base = kernel_base; + p->kernel_size = kernel_size; + + qemu_register_reset(ppce500_reset_device_tree, p); + p->notifier.notify = ppce500_init_notify; + qemu_add_machine_init_done_notifier(&p->notifier); + + /* Issue the device tree loader once, so that we get the size of the blob */ + return ppce500_load_device_tree(machine, params, addr, initrd_base, + initrd_size, kernel_base, kernel_size, + true); +} + +/* Create -kernel TLB entries for BookE. */ +static inline hwaddr booke206_page_size_to_tlb(uint64_t size) +{ + return 63 - clz64(size >> 10); +} + +static int booke206_initial_map_tsize(CPUPPCState *env) +{ + struct boot_info *bi = env->load_info; + hwaddr dt_end; + int ps; + + /* Our initial TLB entry needs to cover everything from 0 to + the device tree top */ + dt_end = bi->dt_base + bi->dt_size; + ps = booke206_page_size_to_tlb(dt_end) + 1; + if (ps & 1) { + /* e500v2 can only do even TLB size bits */ + ps++; + } + return ps; +} + +static uint64_t mmubooke_initial_mapsize(CPUPPCState *env) +{ + int tsize; + + tsize = booke206_initial_map_tsize(env); + return (1ULL << 10 << tsize); +} + +static void mmubooke_create_initial_mapping(CPUPPCState *env) +{ + ppcmas_tlb_t *tlb = booke206_get_tlbm(env, 1, 0, 0); + hwaddr size; + int ps; + + ps = booke206_initial_map_tsize(env); + size = (ps << MAS1_TSIZE_SHIFT); + tlb->mas1 = MAS1_VALID | size; + tlb->mas2 = 0; + tlb->mas7_3 = 0; + tlb->mas7_3 |= MAS3_UR | MAS3_UW | MAS3_UX | MAS3_SR | MAS3_SW | MAS3_SX; + + env->tlb_dirty = true; +} + +static void ppce500_cpu_reset_sec(void *opaque) +{ + PowerPCCPU *cpu = opaque; + CPUState *cs = CPU(cpu); + + cpu_reset(cs); + + /* Secondary CPU starts in halted state for now. Needs to change when + implementing non-kernel boot. */ + cs->halted = 1; + cs->exception_index = EXCP_HLT; +} + +static void ppce500_cpu_reset(void *opaque) +{ + PowerPCCPU *cpu = opaque; + CPUState *cs = CPU(cpu); + CPUPPCState *env = &cpu->env; + struct boot_info *bi = env->load_info; + + cpu_reset(cs); + + /* Set initial guest state. */ + cs->halted = 0; + env->gpr[1] = (16<<20) - 8; + env->gpr[3] = bi->dt_base; + env->gpr[4] = 0; + env->gpr[5] = 0; + env->gpr[6] = EPAPR_MAGIC; + env->gpr[7] = mmubooke_initial_mapsize(env); + env->gpr[8] = 0; + env->gpr[9] = 0; + env->nip = bi->entry; + mmubooke_create_initial_mapping(env); +} + +static DeviceState *ppce500_init_mpic_qemu(PPCE500Params *params, + qemu_irq **irqs) +{ + DeviceState *dev; + SysBusDevice *s; + int i, j, k; + + dev = qdev_create(NULL, TYPE_OPENPIC); + qdev_prop_set_uint32(dev, "model", params->mpic_version); + qdev_prop_set_uint32(dev, "nb_cpus", smp_cpus); + + qdev_init_nofail(dev); + s = SYS_BUS_DEVICE(dev); + + k = 0; + for (i = 0; i < smp_cpus; i++) { + for (j = 0; j < OPENPIC_OUTPUT_NB; j++) { + sysbus_connect_irq(s, k++, irqs[i][j]); + } + } + + return dev; +} + +static DeviceState *ppce500_init_mpic_kvm(PPCE500Params *params, + qemu_irq **irqs, Error **errp) +{ + Error *err = NULL; + DeviceState *dev; + CPUState *cs; + + dev = qdev_create(NULL, TYPE_KVM_OPENPIC); + qdev_prop_set_uint32(dev, "model", params->mpic_version); + + object_property_set_bool(OBJECT(dev), true, "realized", &err); + if (err) { + error_propagate(errp, err); + object_unparent(OBJECT(dev)); + return NULL; + } + + CPU_FOREACH(cs) { + if (kvm_openpic_connect_vcpu(dev, cs)) { + fprintf(stderr, "%s: failed to connect vcpu to irqchip\n", + __func__); + abort(); + } + } + + return dev; +} + +static qemu_irq *ppce500_init_mpic(MachineState *machine, PPCE500Params *params, + MemoryRegion *ccsr, qemu_irq **irqs) +{ + qemu_irq *mpic; + DeviceState *dev = NULL; + SysBusDevice *s; + int i; + + mpic = g_new0(qemu_irq, 256); + + if (kvm_enabled()) { + Error *err = NULL; + + if (machine_kernel_irqchip_allowed(machine)) { + dev = ppce500_init_mpic_kvm(params, irqs, &err); + } + if (machine_kernel_irqchip_required(machine) && !dev) { + error_report("kernel_irqchip requested but unavailable: %s", + error_get_pretty(err)); + exit(1); + } + } + + if (!dev) { + dev = ppce500_init_mpic_qemu(params, irqs); + } + + for (i = 0; i < 256; i++) { + mpic[i] = qdev_get_gpio_in(dev, i); + } + + s = SYS_BUS_DEVICE(dev); + memory_region_add_subregion(ccsr, MPC8544_MPIC_REGS_OFFSET, + s->mmio[0].memory); + + return mpic; +} + +static void ppce500_power_off(void *opaque, int line, int on) +{ + if (on) { + qemu_system_shutdown_request(); + } +} + +void ppce500_init(MachineState *machine, PPCE500Params *params) +{ + MemoryRegion *address_space_mem = get_system_memory(); + MemoryRegion *ram = g_new(MemoryRegion, 1); + PCIBus *pci_bus; + CPUPPCState *env = NULL; + uint64_t loadaddr; + hwaddr kernel_base = -1LL; + int kernel_size = 0; + hwaddr dt_base = 0; + hwaddr initrd_base = 0; + int initrd_size = 0; + hwaddr cur_base = 0; + char *filename; + hwaddr bios_entry = 0; + target_long bios_size; + struct boot_info *boot_info; + int dt_size; + int i; + /* irq num for pin INTA, INTB, INTC and INTD is 1, 2, 3 and + * 4 respectively */ + unsigned int pci_irq_nrs[PCI_NUM_PINS] = {1, 2, 3, 4}; + qemu_irq **irqs, *mpic; + DeviceState *dev; + CPUPPCState *firstenv = NULL; + MemoryRegion *ccsr_addr_space; + SysBusDevice *s; + PPCE500CCSRState *ccsr; + + /* Setup CPUs */ + if (machine->cpu_model == NULL) { + machine->cpu_model = "e500v2_v30"; + } + + irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *)); + irqs[0] = g_malloc0(smp_cpus * sizeof(qemu_irq) * OPENPIC_OUTPUT_NB); + for (i = 0; i < smp_cpus; i++) { + PowerPCCPU *cpu; + CPUState *cs; + qemu_irq *input; + + cpu = cpu_ppc_init(machine->cpu_model); + if (cpu == NULL) { + fprintf(stderr, "Unable to initialize CPU!\n"); + exit(1); + } + env = &cpu->env; + cs = CPU(cpu); + + if (!firstenv) { + firstenv = env; + } + + irqs[i] = irqs[0] + (i * OPENPIC_OUTPUT_NB); + input = (qemu_irq *)env->irq_inputs; + irqs[i][OPENPIC_OUTPUT_INT] = input[PPCE500_INPUT_INT]; + irqs[i][OPENPIC_OUTPUT_CINT] = input[PPCE500_INPUT_CINT]; + env->spr_cb[SPR_BOOKE_PIR].default_value = cs->cpu_index = i; + env->mpic_iack = params->ccsrbar_base + + MPC8544_MPIC_REGS_OFFSET + 0xa0; + + ppc_booke_timers_init(cpu, 400000000, PPC_TIMER_E500); + + /* Register reset handler */ + if (!i) { + /* Primary CPU */ + struct boot_info *boot_info; + boot_info = g_malloc0(sizeof(struct boot_info)); + qemu_register_reset(ppce500_cpu_reset, cpu); + env->load_info = boot_info; + } else { + /* Secondary CPUs */ + qemu_register_reset(ppce500_cpu_reset_sec, cpu); + } + } + + env = firstenv; + + /* Fixup Memory size on a alignment boundary */ + ram_size &= ~(RAM_SIZES_ALIGN - 1); + machine->ram_size = ram_size; + + /* Register Memory */ + memory_region_allocate_system_memory(ram, NULL, "mpc8544ds.ram", ram_size); + memory_region_add_subregion(address_space_mem, 0, ram); + + dev = qdev_create(NULL, "e500-ccsr"); + object_property_add_child(qdev_get_machine(), "e500-ccsr", + OBJECT(dev), NULL); + qdev_init_nofail(dev); + ccsr = CCSR(dev); + ccsr_addr_space = &ccsr->ccsr_space; + memory_region_add_subregion(address_space_mem, params->ccsrbar_base, + ccsr_addr_space); + + mpic = ppce500_init_mpic(machine, params, ccsr_addr_space, irqs); + + /* Serial */ + if (serial_hds[0]) { + serial_mm_init(ccsr_addr_space, MPC8544_SERIAL0_REGS_OFFSET, + 0, mpic[42], 399193, + serial_hds[0], DEVICE_BIG_ENDIAN); + } + + if (serial_hds[1]) { + serial_mm_init(ccsr_addr_space, MPC8544_SERIAL1_REGS_OFFSET, + 0, mpic[42], 399193, + serial_hds[1], DEVICE_BIG_ENDIAN); + } + + /* General Utility device */ + dev = qdev_create(NULL, "mpc8544-guts"); + qdev_init_nofail(dev); + s = SYS_BUS_DEVICE(dev); + memory_region_add_subregion(ccsr_addr_space, MPC8544_UTIL_OFFSET, + sysbus_mmio_get_region(s, 0)); + + /* PCI */ + dev = qdev_create(NULL, "e500-pcihost"); + qdev_prop_set_uint32(dev, "first_slot", params->pci_first_slot); + qdev_prop_set_uint32(dev, "first_pin_irq", pci_irq_nrs[0]); + qdev_init_nofail(dev); + s = SYS_BUS_DEVICE(dev); + for (i = 0; i < PCI_NUM_PINS; i++) { + sysbus_connect_irq(s, i, mpic[pci_irq_nrs[i]]); + } + + memory_region_add_subregion(ccsr_addr_space, MPC8544_PCI_REGS_OFFSET, + sysbus_mmio_get_region(s, 0)); + + pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0"); + if (!pci_bus) + printf("couldn't create PCI controller!\n"); + + if (pci_bus) { + /* Register network interfaces. */ + for (i = 0; i < nb_nics; i++) { + pci_nic_init_nofail(&nd_table[i], pci_bus, "virtio", NULL); + } + } + + /* Register spinning region */ + sysbus_create_simple("e500-spin", params->spin_base, NULL); + + if (cur_base < (32 * 1024 * 1024)) { + /* u-boot occupies memory up to 32MB, so load blobs above */ + cur_base = (32 * 1024 * 1024); + } + + if (params->has_mpc8xxx_gpio) { + qemu_irq poweroff_irq; + + dev = qdev_create(NULL, "mpc8xxx_gpio"); + s = SYS_BUS_DEVICE(dev); + qdev_init_nofail(dev); + sysbus_connect_irq(s, 0, mpic[MPC8XXX_GPIO_IRQ]); + memory_region_add_subregion(ccsr_addr_space, MPC8XXX_GPIO_OFFSET, + sysbus_mmio_get_region(s, 0)); + + /* Power Off GPIO at Pin 0 */ + poweroff_irq = qemu_allocate_irq(ppce500_power_off, NULL, 0); + qdev_connect_gpio_out(dev, 0, poweroff_irq); + } + + /* Platform Bus Device */ + if (params->has_platform_bus) { + dev = qdev_create(NULL, TYPE_PLATFORM_BUS_DEVICE); + dev->id = TYPE_PLATFORM_BUS_DEVICE; + qdev_prop_set_uint32(dev, "num_irqs", params->platform_bus_num_irqs); + qdev_prop_set_uint32(dev, "mmio_size", params->platform_bus_size); + qdev_init_nofail(dev); + s = SYS_BUS_DEVICE(dev); + + for (i = 0; i < params->platform_bus_num_irqs; i++) { + int irqn = params->platform_bus_first_irq + i; + sysbus_connect_irq(s, i, mpic[irqn]); + } + + memory_region_add_subregion(address_space_mem, + params->platform_bus_base, + sysbus_mmio_get_region(s, 0)); + } + + /* Load kernel. */ + if (machine->kernel_filename) { + kernel_base = cur_base; + kernel_size = load_image_targphys(machine->kernel_filename, + cur_base, + ram_size - cur_base); + if (kernel_size < 0) { + fprintf(stderr, "qemu: could not load kernel '%s'\n", + machine->kernel_filename); + exit(1); + } + + cur_base += kernel_size; + } + + /* Load initrd. */ + if (machine->initrd_filename) { + initrd_base = (cur_base + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK; + initrd_size = load_image_targphys(machine->initrd_filename, initrd_base, + ram_size - initrd_base); + + if (initrd_size < 0) { + fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", + machine->initrd_filename); + exit(1); + } + + cur_base = initrd_base + initrd_size; + } + + /* + * Smart firmware defaults ahead! + * + * We follow the following table to select which payload we execute. + * + * -kernel | -bios | payload + * ---------+-------+--------- + * N | Y | u-boot + * N | N | u-boot + * Y | Y | u-boot + * Y | N | kernel + * + * This ensures backwards compatibility with how we used to expose + * -kernel to users but allows them to run through u-boot as well. + */ + if (bios_name == NULL) { + if (machine->kernel_filename) { + bios_name = machine->kernel_filename; + } else { + bios_name = "u-boot.e500"; + } + } + filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); + + bios_size = load_elf(filename, NULL, NULL, &bios_entry, &loadaddr, NULL, + 1, PPC_ELF_MACHINE, 0); + if (bios_size < 0) { + /* + * Hrm. No ELF image? Try a uImage, maybe someone is giving us an + * ePAPR compliant kernel + */ + kernel_size = load_uimage(filename, &bios_entry, &loadaddr, NULL, + NULL, NULL); + if (kernel_size < 0) { + fprintf(stderr, "qemu: could not load firmware '%s'\n", filename); + exit(1); + } + } + g_free(filename); + + /* Reserve space for dtb */ + dt_base = (loadaddr + bios_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK; + + dt_size = ppce500_prep_device_tree(machine, params, dt_base, + initrd_base, initrd_size, + kernel_base, kernel_size); + if (dt_size < 0) { + fprintf(stderr, "couldn't load device tree\n"); + exit(1); + } + assert(dt_size < DTB_MAX_SIZE); + + boot_info = env->load_info; + boot_info->entry = bios_entry; + boot_info->dt_base = dt_base; + boot_info->dt_size = dt_size; +} + +static int e500_ccsr_initfn(SysBusDevice *dev) +{ + PPCE500CCSRState *ccsr; + + ccsr = CCSR(dev); + memory_region_init(&ccsr->ccsr_space, OBJECT(ccsr), "e500-ccsr", + MPC8544_CCSRBAR_SIZE); + return 0; +} + +static void e500_ccsr_class_init(ObjectClass *klass, void *data) +{ + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + k->init = e500_ccsr_initfn; +} + +static const TypeInfo e500_ccsr_info = { + .name = TYPE_CCSR, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(PPCE500CCSRState), + .class_init = e500_ccsr_class_init, +}; + +static void e500_register_types(void) +{ + type_register_static(&e500_ccsr_info); +} + +type_init(e500_register_types) |
