| /* |
| * QEMU aCube Sam460ex board emulation |
| * |
| * Copyright (c) 2012 François Revol |
| * Copyright (c) 2016-2019 BALATON Zoltan |
| * |
| * This file is derived from hw/ppc440_bamboo.c, |
| * the copyright for that material belongs to the original owners. |
| * |
| * This work is licensed under the GNU GPL license version 2 or later. |
| * |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/units.h" |
| #include "qemu/datadir.h" |
| #include "qemu/error-report.h" |
| #include "qapi/error.h" |
| #include "hw/boards.h" |
| #include "sysemu/kvm.h" |
| #include "kvm_ppc.h" |
| #include "sysemu/device_tree.h" |
| #include "sysemu/block-backend.h" |
| #include "hw/loader.h" |
| #include "elf.h" |
| #include "exec/memory.h" |
| #include "ppc440.h" |
| #include "hw/block/flash.h" |
| #include "sysemu/sysemu.h" |
| #include "sysemu/reset.h" |
| #include "hw/sysbus.h" |
| #include "hw/char/serial.h" |
| #include "hw/i2c/ppc4xx_i2c.h" |
| #include "hw/i2c/smbus_eeprom.h" |
| #include "hw/usb/hcd-ehci.h" |
| #include "hw/ppc/fdt.h" |
| #include "hw/qdev-properties.h" |
| #include "hw/intc/ppc-uic.h" |
| |
| #include <libfdt.h> |
| |
| #define BINARY_DEVICE_TREE_FILE "canyonlands.dtb" |
| #define UBOOT_FILENAME "u-boot-sam460-20100605.bin" |
| /* to extract the official U-Boot bin from the updater: */ |
| /* dd bs=1 skip=$(($(stat -c '%s' updater/updater-460) - 0x80000)) \ |
| if=updater/updater-460 of=u-boot-sam460-20100605.bin */ |
| |
| /* from Sam460 U-Boot include/configs/Sam460ex.h */ |
| #define FLASH_BASE 0xfff00000 |
| #define FLASH_BASE_H 0x4 |
| #define FLASH_SIZE (1 * MiB) |
| #define UBOOT_LOAD_BASE 0xfff80000 |
| #define UBOOT_SIZE 0x00080000 |
| #define UBOOT_ENTRY 0xfffffffc |
| |
| /* from U-Boot */ |
| #define EPAPR_MAGIC (0x45504150) |
| #define KERNEL_ADDR 0x1000000 |
| #define FDT_ADDR 0x1800000 |
| #define RAMDISK_ADDR 0x1900000 |
| |
| /* Sam460ex IRQ MAP: |
| IRQ0 = ETH_INT |
| IRQ1 = FPGA_INT |
| IRQ2 = PCI_INT (PCIA, PCIB, PCIC, PCIB) |
| IRQ3 = FPGA_INT2 |
| IRQ11 = RTC_INT |
| IRQ12 = SM502_INT |
| */ |
| |
| #define CPU_FREQ 1150000000 |
| #define PLB_FREQ 230000000 |
| #define OPB_FREQ 115000000 |
| #define EBC_FREQ 115000000 |
| #define UART_FREQ 11059200 |
| |
| struct boot_info { |
| uint32_t dt_base; |
| uint32_t dt_size; |
| uint32_t entry; |
| }; |
| |
| static int sam460ex_load_uboot(void) |
| { |
| /* |
| * This first creates 1MiB of flash memory mapped at the end of |
| * the 32-bit address space (0xFFF00000..0xFFFFFFFF). |
| * |
| * If_PFLASH unit 0 is defined, the flash memory is initialized |
| * from that block backend. |
| * |
| * Else, it's initialized to zero. And then 512KiB of ROM get |
| * mapped on top of its second half (0xFFF80000..0xFFFFFFFF), |
| * initialized from u-boot-sam460-20100605.bin. |
| * |
| * This doesn't smell right. |
| * |
| * The physical hardware appears to have 512KiB flash memory. |
| * |
| * TODO Figure out what we really need here, and clean this up. |
| */ |
| |
| DriveInfo *dinfo; |
| |
| dinfo = drive_get(IF_PFLASH, 0, 0); |
| if (!pflash_cfi01_register(FLASH_BASE | ((hwaddr)FLASH_BASE_H << 32), |
| "sam460ex.flash", FLASH_SIZE, |
| dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, |
| 64 * KiB, 1, 0x89, 0x18, 0x0000, 0x0, 1)) { |
| error_report("Error registering flash memory"); |
| /* XXX: return an error instead? */ |
| exit(1); |
| } |
| |
| if (!dinfo) { |
| /*error_report("No flash image given with the 'pflash' parameter," |
| " using default u-boot image");*/ |
| rom_add_file_fixed(UBOOT_FILENAME, |
| UBOOT_LOAD_BASE | ((hwaddr)FLASH_BASE_H << 32), |
| -1); |
| } |
| |
| return 0; |
| } |
| |
| static int sam460ex_load_device_tree(MachineState *machine, |
| hwaddr addr, |
| hwaddr initrd_base, |
| hwaddr initrd_size) |
| { |
| uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(machine->ram_size) }; |
| char *filename; |
| int fdt_size; |
| void *fdt; |
| uint32_t tb_freq = CPU_FREQ; |
| uint32_t clock_freq = CPU_FREQ; |
| int offset; |
| |
| filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); |
| if (!filename) { |
| error_report("Couldn't find dtb file `%s'", BINARY_DEVICE_TREE_FILE); |
| exit(1); |
| } |
| fdt = load_device_tree(filename, &fdt_size); |
| if (!fdt) { |
| error_report("Couldn't load dtb file `%s'", filename); |
| g_free(filename); |
| exit(1); |
| } |
| g_free(filename); |
| |
| /* Manipulate device tree in memory. */ |
| |
| qemu_fdt_setprop(fdt, "/memory", "reg", mem_reg_property, |
| sizeof(mem_reg_property)); |
| |
| /* default FDT doesn't have a /chosen node... */ |
| qemu_fdt_add_subnode(fdt, "/chosen"); |
| |
| qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", initrd_base); |
| |
| qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", |
| (initrd_base + initrd_size)); |
| |
| qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", |
| machine->kernel_cmdline); |
| |
| /* Copy data from the host device tree into the guest. Since the guest can |
| * directly access the timebase without host involvement, we must expose |
| * the correct frequencies. */ |
| if (kvm_enabled()) { |
| tb_freq = kvmppc_get_tbfreq(); |
| clock_freq = kvmppc_get_clockfreq(); |
| } |
| |
| qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "clock-frequency", |
| clock_freq); |
| qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "timebase-frequency", |
| tb_freq); |
| |
| /* Remove cpm node if it exists (it is not emulated) */ |
| offset = fdt_path_offset(fdt, "/cpm"); |
| if (offset >= 0) { |
| _FDT(fdt_nop_node(fdt, offset)); |
| } |
| |
| /* set serial port clocks */ |
| offset = fdt_node_offset_by_compatible(fdt, -1, "ns16550"); |
| while (offset >= 0) { |
| _FDT(fdt_setprop_cell(fdt, offset, "clock-frequency", UART_FREQ)); |
| offset = fdt_node_offset_by_compatible(fdt, offset, "ns16550"); |
| } |
| |
| /* some more clocks */ |
| qemu_fdt_setprop_cell(fdt, "/plb", "clock-frequency", |
| PLB_FREQ); |
| qemu_fdt_setprop_cell(fdt, "/plb/opb", "clock-frequency", |
| OPB_FREQ); |
| qemu_fdt_setprop_cell(fdt, "/plb/opb/ebc", "clock-frequency", |
| EBC_FREQ); |
| |
| rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); |
| |
| /* Set machine->fdt for 'dumpdtb' QMP/HMP command */ |
| machine->fdt = fdt; |
| |
| return fdt_size; |
| } |
| |
| /* Create reset TLB entries for BookE, mapping only the flash memory. */ |
| static void mmubooke_create_initial_mapping_uboot(CPUPPCState *env) |
| { |
| ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; |
| |
| /* on reset the flash is mapped by a shadow TLB, |
| * but since we don't implement them we need to use |
| * the same values U-Boot will use to avoid a fault. |
| */ |
| tlb->attr = 0; |
| tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); |
| tlb->size = 0x10000000; /* up to 0xffffffff */ |
| tlb->EPN = 0xf0000000 & TARGET_PAGE_MASK; |
| tlb->RPN = (0xf0000000 & TARGET_PAGE_MASK) | 0x4; |
| tlb->PID = 0; |
| } |
| |
| /* Create reset TLB entries for BookE, spanning the 32bit addr space. */ |
| static void mmubooke_create_initial_mapping(CPUPPCState *env, |
| target_ulong va, |
| hwaddr pa) |
| { |
| ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; |
| |
| tlb->attr = 0; |
| tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); |
| tlb->size = 1 << 31; /* up to 0x80000000 */ |
| tlb->EPN = va & TARGET_PAGE_MASK; |
| tlb->RPN = pa & TARGET_PAGE_MASK; |
| tlb->PID = 0; |
| } |
| |
| static void main_cpu_reset(void *opaque) |
| { |
| PowerPCCPU *cpu = opaque; |
| CPUPPCState *env = &cpu->env; |
| struct boot_info *bi = env->load_info; |
| |
| cpu_reset(CPU(cpu)); |
| |
| /* either we have a kernel to boot or we jump to U-Boot */ |
| if (bi->entry != UBOOT_ENTRY) { |
| env->gpr[1] = (16 * MiB) - 8; |
| env->gpr[3] = FDT_ADDR; |
| env->nip = bi->entry; |
| |
| /* Create a mapping for the kernel. */ |
| mmubooke_create_initial_mapping(env, 0, 0); |
| env->gpr[6] = tswap32(EPAPR_MAGIC); |
| env->gpr[7] = (16 * MiB) - 8; /* bi->ima_size; */ |
| |
| } else { |
| env->nip = UBOOT_ENTRY; |
| mmubooke_create_initial_mapping_uboot(env); |
| } |
| } |
| |
| static void sam460ex_init(MachineState *machine) |
| { |
| MemoryRegion *address_space_mem = get_system_memory(); |
| MemoryRegion *isa = g_new(MemoryRegion, 1); |
| MemoryRegion *l2cache_ram = g_new(MemoryRegion, 1); |
| DeviceState *uic[4]; |
| int i; |
| PCIBus *pci_bus; |
| PowerPCCPU *cpu; |
| CPUPPCState *env; |
| I2CBus *i2c; |
| hwaddr entry = UBOOT_ENTRY; |
| target_long initrd_size = 0; |
| DeviceState *dev; |
| SysBusDevice *sbdev; |
| struct boot_info *boot_info; |
| uint8_t *spd_data; |
| int success; |
| |
| cpu = POWERPC_CPU(cpu_create(machine->cpu_type)); |
| env = &cpu->env; |
| if (env->mmu_model != POWERPC_MMU_BOOKE) { |
| error_report("Only MMU model BookE is supported by this machine."); |
| exit(1); |
| } |
| |
| qemu_register_reset(main_cpu_reset, cpu); |
| boot_info = g_malloc0(sizeof(*boot_info)); |
| env->load_info = boot_info; |
| |
| ppc_booke_timers_init(cpu, CPU_FREQ, 0); |
| ppc_dcr_init(env, NULL, NULL); |
| |
| /* PLB arbitrer */ |
| dev = qdev_new(TYPE_PPC4xx_PLB); |
| ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev), cpu, &error_fatal); |
| object_unref(OBJECT(dev)); |
| |
| /* interrupt controllers */ |
| for (i = 0; i < ARRAY_SIZE(uic); i++) { |
| /* |
| * UICs 1, 2 and 3 are cascaded through UIC 0. |
| * input_ints[n] is the interrupt number on UIC 0 which |
| * the INT output of UIC n is connected to. The CINT output |
| * of UIC n connects to input_ints[n] + 1. |
| * The entry in input_ints[] for UIC 0 is ignored, because UIC 0's |
| * INT and CINT outputs are connected to the CPU. |
| */ |
| const int input_ints[] = { -1, 30, 10, 16 }; |
| |
| uic[i] = qdev_new(TYPE_PPC_UIC); |
| qdev_prop_set_uint32(uic[i], "dcr-base", 0xc0 + i * 0x10); |
| ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(uic[i]), cpu, &error_fatal); |
| object_unref(OBJECT(uic[i])); |
| |
| sbdev = SYS_BUS_DEVICE(uic[i]); |
| if (i == 0) { |
| sysbus_connect_irq(sbdev, PPCUIC_OUTPUT_INT, |
| qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_INT)); |
| sysbus_connect_irq(sbdev, PPCUIC_OUTPUT_CINT, |
| qdev_get_gpio_in(DEVICE(cpu), PPC40x_INPUT_CINT)); |
| } else { |
| sysbus_connect_irq(sbdev, PPCUIC_OUTPUT_INT, |
| qdev_get_gpio_in(uic[0], input_ints[i])); |
| sysbus_connect_irq(sbdev, PPCUIC_OUTPUT_CINT, |
| qdev_get_gpio_in(uic[0], input_ints[i] + 1)); |
| } |
| } |
| |
| /* SDRAM controller */ |
| /* The SoC could also handle 4 GiB but firmware does not work with that. */ |
| if (machine->ram_size > 2 * GiB) { |
| error_report("Memory over 2 GiB is not supported"); |
| exit(1); |
| } |
| /* Firmware needs at least 64 MiB */ |
| if (machine->ram_size < 64 * MiB) { |
| error_report("Memory below 64 MiB is not supported"); |
| exit(1); |
| } |
| dev = qdev_new(TYPE_PPC4xx_SDRAM_DDR2); |
| object_property_set_link(OBJECT(dev), "dram", OBJECT(machine->ram), |
| &error_abort); |
| /* |
| * Put all RAM on first bank because board has one slot |
| * and firmware only checks that |
| */ |
| object_property_set_int(OBJECT(dev), "nbanks", 1, &error_abort); |
| ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev), cpu, &error_fatal); |
| object_unref(OBJECT(dev)); |
| /* FIXME: does 460EX have ECC interrupts? */ |
| /* Enable SDRAM memory regions as we may boot without firmware */ |
| ppc4xx_sdram_ddr2_enable(PPC4xx_SDRAM_DDR2(dev)); |
| |
| /* IIC controllers and devices */ |
| dev = sysbus_create_simple(TYPE_PPC4xx_I2C, 0x4ef600700, |
| qdev_get_gpio_in(uic[0], 2)); |
| i2c = PPC4xx_I2C(dev)->bus; |
| /* SPD EEPROM on RAM module */ |
| spd_data = spd_data_generate(machine->ram_size < 128 * MiB ? DDR : DDR2, |
| machine->ram_size); |
| spd_data[20] = 4; /* SO-DIMM module */ |
| smbus_eeprom_init_one(i2c, 0x50, spd_data); |
| /* RTC */ |
| i2c_slave_create_simple(i2c, "m41t80", 0x68); |
| |
| dev = sysbus_create_simple(TYPE_PPC4xx_I2C, 0x4ef600800, |
| qdev_get_gpio_in(uic[0], 3)); |
| |
| /* External bus controller */ |
| dev = qdev_new(TYPE_PPC4xx_EBC); |
| ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev), cpu, &error_fatal); |
| object_unref(OBJECT(dev)); |
| |
| /* CPR */ |
| ppc4xx_cpr_init(env); |
| |
| /* PLB to AHB bridge */ |
| ppc4xx_ahb_init(env); |
| |
| /* System DCRs */ |
| ppc4xx_sdr_init(env); |
| |
| /* MAL */ |
| dev = qdev_new(TYPE_PPC4xx_MAL); |
| qdev_prop_set_uint32(dev, "txc-num", 4); |
| qdev_prop_set_uint32(dev, "rxc-num", 16); |
| ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev), cpu, &error_fatal); |
| object_unref(OBJECT(dev)); |
| sbdev = SYS_BUS_DEVICE(dev); |
| for (i = 0; i < ARRAY_SIZE(PPC4xx_MAL(dev)->irqs); i++) { |
| sysbus_connect_irq(sbdev, i, qdev_get_gpio_in(uic[2], 3 + i)); |
| } |
| |
| /* DMA */ |
| ppc4xx_dma_init(env, 0x200); |
| |
| /* 256K of L2 cache as memory */ |
| ppc4xx_l2sram_init(env); |
| /* FIXME: remove this after fixing l2sram mapping in ppc440_uc.c? */ |
| memory_region_init_ram(l2cache_ram, NULL, "ppc440.l2cache_ram", 256 * KiB, |
| &error_abort); |
| memory_region_add_subregion(address_space_mem, 0x400000000LL, l2cache_ram); |
| |
| /* USB */ |
| sysbus_create_simple(TYPE_PPC4xx_EHCI, 0x4bffd0400, |
| qdev_get_gpio_in(uic[2], 29)); |
| dev = qdev_new("sysbus-ohci"); |
| qdev_prop_set_string(dev, "masterbus", "usb-bus.0"); |
| qdev_prop_set_uint32(dev, "num-ports", 6); |
| sbdev = SYS_BUS_DEVICE(dev); |
| sysbus_realize_and_unref(sbdev, &error_fatal); |
| sysbus_mmio_map(sbdev, 0, 0x4bffd0000); |
| sysbus_connect_irq(sbdev, 0, qdev_get_gpio_in(uic[2], 30)); |
| usb_create_simple(usb_bus_find(-1), "usb-kbd"); |
| usb_create_simple(usb_bus_find(-1), "usb-mouse"); |
| |
| /* PCI bus */ |
| ppc460ex_pcie_init(env); |
| /* All PCI irqs are connected to the same UIC pin (cf. UBoot source) */ |
| dev = sysbus_create_simple("ppc440-pcix-host", 0xc0ec00000, |
| qdev_get_gpio_in(uic[1], 0)); |
| pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci.0")); |
| |
| memory_region_init_alias(isa, NULL, "isa_mmio", get_system_io(), |
| 0, 0x10000); |
| memory_region_add_subregion(get_system_memory(), 0xc08000000, isa); |
| |
| /* PCI devices */ |
| pci_create_simple(pci_bus, PCI_DEVFN(6, 0), "sm501"); |
| /* SoC has a single SATA port but we don't emulate that yet |
| * However, firmware and usual clients have driver for SiI311x |
| * so add one for convenience by default */ |
| if (defaults_enabled()) { |
| pci_create_simple(pci_bus, -1, "sii3112"); |
| } |
| |
| /* SoC has 4 UARTs |
| * but board has only one wired and two are present in fdt */ |
| if (serial_hd(0) != NULL) { |
| serial_mm_init(address_space_mem, 0x4ef600300, 0, |
| qdev_get_gpio_in(uic[1], 1), |
| PPC_SERIAL_MM_BAUDBASE, serial_hd(0), |
| DEVICE_BIG_ENDIAN); |
| } |
| if (serial_hd(1) != NULL) { |
| serial_mm_init(address_space_mem, 0x4ef600400, 0, |
| qdev_get_gpio_in(uic[0], 1), |
| PPC_SERIAL_MM_BAUDBASE, serial_hd(1), |
| DEVICE_BIG_ENDIAN); |
| } |
| |
| /* Load U-Boot image. */ |
| if (!machine->kernel_filename) { |
| success = sam460ex_load_uboot(); |
| if (success < 0) { |
| error_report("could not load firmware"); |
| exit(1); |
| } |
| } |
| |
| /* Load kernel. */ |
| if (machine->kernel_filename) { |
| hwaddr loadaddr = LOAD_UIMAGE_LOADADDR_INVALID; |
| success = load_uimage(machine->kernel_filename, &entry, &loadaddr, |
| NULL, NULL, NULL); |
| if (success < 0) { |
| uint64_t elf_entry; |
| |
| success = load_elf(machine->kernel_filename, NULL, NULL, NULL, |
| &elf_entry, NULL, NULL, NULL, |
| 1, PPC_ELF_MACHINE, 0, 0); |
| entry = elf_entry; |
| } |
| /* XXX try again as binary */ |
| if (success < 0) { |
| error_report("could not load kernel '%s'", |
| machine->kernel_filename); |
| exit(1); |
| } |
| } |
| |
| /* Load initrd. */ |
| if (machine->initrd_filename) { |
| initrd_size = load_image_targphys(machine->initrd_filename, |
| RAMDISK_ADDR, |
| machine->ram_size - RAMDISK_ADDR); |
| if (initrd_size < 0) { |
| error_report("could not load ram disk '%s' at %x", |
| machine->initrd_filename, RAMDISK_ADDR); |
| exit(1); |
| } |
| } |
| |
| /* If we're loading a kernel directly, we must load the device tree too. */ |
| if (machine->kernel_filename) { |
| int dt_size; |
| |
| dt_size = sam460ex_load_device_tree(machine, FDT_ADDR, |
| RAMDISK_ADDR, initrd_size); |
| |
| boot_info->dt_base = FDT_ADDR; |
| boot_info->dt_size = dt_size; |
| } |
| |
| boot_info->entry = entry; |
| } |
| |
| static void sam460ex_machine_init(MachineClass *mc) |
| { |
| mc->desc = "aCube Sam460ex"; |
| mc->init = sam460ex_init; |
| mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("460exb"); |
| mc->default_ram_size = 512 * MiB; |
| mc->default_ram_id = "ppc4xx.sdram"; |
| } |
| |
| DEFINE_MACHINE("sam460ex", sam460ex_machine_init) |
