| /* |
| * MIPS Boston development board emulation. |
| * |
| * Copyright (c) 2016 Imagination Technologies |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/units.h" |
| |
| #include "exec/address-spaces.h" |
| #include "hw/boards.h" |
| #include "hw/char/serial.h" |
| #include "hw/ide/pci.h" |
| #include "hw/ide/ahci.h" |
| #include "hw/loader.h" |
| #include "hw/loader-fit.h" |
| #include "hw/mips/cps.h" |
| #include "hw/mips/cpudevs.h" |
| #include "hw/pci-host/xilinx-pcie.h" |
| #include "hw/qdev-properties.h" |
| #include "qapi/error.h" |
| #include "qemu/error-report.h" |
| #include "qemu/log.h" |
| #include "chardev/char.h" |
| #include "sysemu/device_tree.h" |
| #include "sysemu/sysemu.h" |
| #include "sysemu/qtest.h" |
| |
| #include <libfdt.h> |
| |
| #define TYPE_MIPS_BOSTON "mips-boston" |
| #define BOSTON(obj) OBJECT_CHECK(BostonState, (obj), TYPE_MIPS_BOSTON) |
| |
| typedef struct { |
| SysBusDevice parent_obj; |
| |
| MachineState *mach; |
| MIPSCPSState cps; |
| SerialState *uart; |
| |
| CharBackend lcd_display; |
| char lcd_content[8]; |
| bool lcd_inited; |
| |
| hwaddr kernel_entry; |
| hwaddr fdt_base; |
| } BostonState; |
| |
| enum boston_plat_reg { |
| PLAT_FPGA_BUILD = 0x00, |
| PLAT_CORE_CL = 0x04, |
| PLAT_WRAPPER_CL = 0x08, |
| PLAT_SYSCLK_STATUS = 0x0c, |
| PLAT_SOFTRST_CTL = 0x10, |
| #define PLAT_SOFTRST_CTL_SYSRESET (1 << 4) |
| PLAT_DDR3_STATUS = 0x14, |
| #define PLAT_DDR3_STATUS_LOCKED (1 << 0) |
| #define PLAT_DDR3_STATUS_CALIBRATED (1 << 2) |
| PLAT_PCIE_STATUS = 0x18, |
| #define PLAT_PCIE_STATUS_PCIE0_LOCKED (1 << 0) |
| #define PLAT_PCIE_STATUS_PCIE1_LOCKED (1 << 8) |
| #define PLAT_PCIE_STATUS_PCIE2_LOCKED (1 << 16) |
| PLAT_FLASH_CTL = 0x1c, |
| PLAT_SPARE0 = 0x20, |
| PLAT_SPARE1 = 0x24, |
| PLAT_SPARE2 = 0x28, |
| PLAT_SPARE3 = 0x2c, |
| PLAT_MMCM_DIV = 0x30, |
| #define PLAT_MMCM_DIV_CLK0DIV_SHIFT 0 |
| #define PLAT_MMCM_DIV_INPUT_SHIFT 8 |
| #define PLAT_MMCM_DIV_MUL_SHIFT 16 |
| #define PLAT_MMCM_DIV_CLK1DIV_SHIFT 24 |
| PLAT_BUILD_CFG = 0x34, |
| #define PLAT_BUILD_CFG_IOCU_EN (1 << 0) |
| #define PLAT_BUILD_CFG_PCIE0_EN (1 << 1) |
| #define PLAT_BUILD_CFG_PCIE1_EN (1 << 2) |
| #define PLAT_BUILD_CFG_PCIE2_EN (1 << 3) |
| PLAT_DDR_CFG = 0x38, |
| #define PLAT_DDR_CFG_SIZE (0xf << 0) |
| #define PLAT_DDR_CFG_MHZ (0xfff << 4) |
| PLAT_NOC_PCIE0_ADDR = 0x3c, |
| PLAT_NOC_PCIE1_ADDR = 0x40, |
| PLAT_NOC_PCIE2_ADDR = 0x44, |
| PLAT_SYS_CTL = 0x48, |
| }; |
| |
| static void boston_lcd_event(void *opaque, int event) |
| { |
| BostonState *s = opaque; |
| if (event == CHR_EVENT_OPENED && !s->lcd_inited) { |
| qemu_chr_fe_printf(&s->lcd_display, " "); |
| s->lcd_inited = true; |
| } |
| } |
| |
| static uint64_t boston_lcd_read(void *opaque, hwaddr addr, |
| unsigned size) |
| { |
| BostonState *s = opaque; |
| uint64_t val = 0; |
| |
| switch (size) { |
| case 8: |
| val |= (uint64_t)s->lcd_content[(addr + 7) & 0x7] << 56; |
| val |= (uint64_t)s->lcd_content[(addr + 6) & 0x7] << 48; |
| val |= (uint64_t)s->lcd_content[(addr + 5) & 0x7] << 40; |
| val |= (uint64_t)s->lcd_content[(addr + 4) & 0x7] << 32; |
| /* fall through */ |
| case 4: |
| val |= (uint64_t)s->lcd_content[(addr + 3) & 0x7] << 24; |
| val |= (uint64_t)s->lcd_content[(addr + 2) & 0x7] << 16; |
| /* fall through */ |
| case 2: |
| val |= (uint64_t)s->lcd_content[(addr + 1) & 0x7] << 8; |
| /* fall through */ |
| case 1: |
| val |= (uint64_t)s->lcd_content[(addr + 0) & 0x7]; |
| break; |
| } |
| |
| return val; |
| } |
| |
| static void boston_lcd_write(void *opaque, hwaddr addr, |
| uint64_t val, unsigned size) |
| { |
| BostonState *s = opaque; |
| |
| switch (size) { |
| case 8: |
| s->lcd_content[(addr + 7) & 0x7] = val >> 56; |
| s->lcd_content[(addr + 6) & 0x7] = val >> 48; |
| s->lcd_content[(addr + 5) & 0x7] = val >> 40; |
| s->lcd_content[(addr + 4) & 0x7] = val >> 32; |
| /* fall through */ |
| case 4: |
| s->lcd_content[(addr + 3) & 0x7] = val >> 24; |
| s->lcd_content[(addr + 2) & 0x7] = val >> 16; |
| /* fall through */ |
| case 2: |
| s->lcd_content[(addr + 1) & 0x7] = val >> 8; |
| /* fall through */ |
| case 1: |
| s->lcd_content[(addr + 0) & 0x7] = val; |
| break; |
| } |
| |
| qemu_chr_fe_printf(&s->lcd_display, |
| "\r%-8.8s", s->lcd_content); |
| } |
| |
| static const MemoryRegionOps boston_lcd_ops = { |
| .read = boston_lcd_read, |
| .write = boston_lcd_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| }; |
| |
| static uint64_t boston_platreg_read(void *opaque, hwaddr addr, |
| unsigned size) |
| { |
| BostonState *s = opaque; |
| uint32_t gic_freq, val; |
| |
| if (size != 4) { |
| qemu_log_mask(LOG_UNIMP, "%uB platform register read\n", size); |
| return 0; |
| } |
| |
| switch (addr & 0xffff) { |
| case PLAT_FPGA_BUILD: |
| case PLAT_CORE_CL: |
| case PLAT_WRAPPER_CL: |
| return 0; |
| case PLAT_DDR3_STATUS: |
| return PLAT_DDR3_STATUS_LOCKED | PLAT_DDR3_STATUS_CALIBRATED; |
| case PLAT_MMCM_DIV: |
| gic_freq = mips_gictimer_get_freq(s->cps.gic.gic_timer) / 1000000; |
| val = gic_freq << PLAT_MMCM_DIV_INPUT_SHIFT; |
| val |= 1 << PLAT_MMCM_DIV_MUL_SHIFT; |
| val |= 1 << PLAT_MMCM_DIV_CLK0DIV_SHIFT; |
| val |= 1 << PLAT_MMCM_DIV_CLK1DIV_SHIFT; |
| return val; |
| case PLAT_BUILD_CFG: |
| val = PLAT_BUILD_CFG_PCIE0_EN; |
| val |= PLAT_BUILD_CFG_PCIE1_EN; |
| val |= PLAT_BUILD_CFG_PCIE2_EN; |
| return val; |
| case PLAT_DDR_CFG: |
| val = s->mach->ram_size / GiB; |
| assert(!(val & ~PLAT_DDR_CFG_SIZE)); |
| val |= PLAT_DDR_CFG_MHZ; |
| return val; |
| default: |
| qemu_log_mask(LOG_UNIMP, "Read platform register 0x%" HWADDR_PRIx "\n", |
| addr & 0xffff); |
| return 0; |
| } |
| } |
| |
| static void boston_platreg_write(void *opaque, hwaddr addr, |
| uint64_t val, unsigned size) |
| { |
| if (size != 4) { |
| qemu_log_mask(LOG_UNIMP, "%uB platform register write\n", size); |
| return; |
| } |
| |
| switch (addr & 0xffff) { |
| case PLAT_FPGA_BUILD: |
| case PLAT_CORE_CL: |
| case PLAT_WRAPPER_CL: |
| case PLAT_DDR3_STATUS: |
| case PLAT_PCIE_STATUS: |
| case PLAT_MMCM_DIV: |
| case PLAT_BUILD_CFG: |
| case PLAT_DDR_CFG: |
| /* read only */ |
| break; |
| case PLAT_SOFTRST_CTL: |
| if (val & PLAT_SOFTRST_CTL_SYSRESET) { |
| qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); |
| } |
| break; |
| default: |
| qemu_log_mask(LOG_UNIMP, "Write platform register 0x%" HWADDR_PRIx |
| " = 0x%" PRIx64 "\n", addr & 0xffff, val); |
| break; |
| } |
| } |
| |
| static const MemoryRegionOps boston_platreg_ops = { |
| .read = boston_platreg_read, |
| .write = boston_platreg_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| }; |
| |
| static const TypeInfo boston_device = { |
| .name = TYPE_MIPS_BOSTON, |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(BostonState), |
| }; |
| |
| static void boston_register_types(void) |
| { |
| type_register_static(&boston_device); |
| } |
| type_init(boston_register_types) |
| |
| static void gen_firmware(uint32_t *p, hwaddr kernel_entry, hwaddr fdt_addr, |
| bool is_64b) |
| { |
| const uint32_t cm_base = 0x16100000; |
| const uint32_t gic_base = 0x16120000; |
| const uint32_t cpc_base = 0x16200000; |
| |
| /* Move CM GCRs */ |
| if (is_64b) { |
| stl_p(p++, 0x40287803); /* dmfc0 $8, CMGCRBase */ |
| stl_p(p++, 0x00084138); /* dsll $8, $8, 4 */ |
| } else { |
| stl_p(p++, 0x40087803); /* mfc0 $8, CMGCRBase */ |
| stl_p(p++, 0x00084100); /* sll $8, $8, 4 */ |
| } |
| stl_p(p++, 0x3c09a000); /* lui $9, 0xa000 */ |
| stl_p(p++, 0x01094025); /* or $8, $9 */ |
| stl_p(p++, 0x3c0a0000 | (cm_base >> 16)); /* lui $10, cm_base >> 16 */ |
| if (is_64b) { |
| stl_p(p++, 0xfd0a0008); /* sd $10, 0x8($8) */ |
| } else { |
| stl_p(p++, 0xad0a0008); /* sw $10, 0x8($8) */ |
| } |
| stl_p(p++, 0x012a4025); /* or $8, $10 */ |
| |
| /* Move & enable GIC GCRs */ |
| stl_p(p++, 0x3c090000 | (gic_base >> 16)); /* lui $9, gic_base >> 16 */ |
| stl_p(p++, 0x35290001); /* ori $9, 0x1 */ |
| if (is_64b) { |
| stl_p(p++, 0xfd090080); /* sd $9, 0x80($8) */ |
| } else { |
| stl_p(p++, 0xad090080); /* sw $9, 0x80($8) */ |
| } |
| |
| /* Move & enable CPC GCRs */ |
| stl_p(p++, 0x3c090000 | (cpc_base >> 16)); /* lui $9, cpc_base >> 16 */ |
| stl_p(p++, 0x35290001); /* ori $9, 0x1 */ |
| if (is_64b) { |
| stl_p(p++, 0xfd090088); /* sd $9, 0x88($8) */ |
| } else { |
| stl_p(p++, 0xad090088); /* sw $9, 0x88($8) */ |
| } |
| |
| /* |
| * Setup argument registers to follow the UHI boot protocol: |
| * |
| * a0/$4 = -2 |
| * a1/$5 = virtual address of FDT |
| * a2/$6 = 0 |
| * a3/$7 = 0 |
| */ |
| stl_p(p++, 0x2404fffe); /* li $4, -2 */ |
| /* lui $5, hi(fdt_addr) */ |
| stl_p(p++, 0x3c050000 | ((fdt_addr >> 16) & 0xffff)); |
| if (fdt_addr & 0xffff) { /* ori $5, lo(fdt_addr) */ |
| stl_p(p++, 0x34a50000 | (fdt_addr & 0xffff)); |
| } |
| stl_p(p++, 0x34060000); /* li $6, 0 */ |
| stl_p(p++, 0x34070000); /* li $7, 0 */ |
| |
| /* Load kernel entry address & jump to it */ |
| /* lui $25, hi(kernel_entry) */ |
| stl_p(p++, 0x3c190000 | ((kernel_entry >> 16) & 0xffff)); |
| /* ori $25, lo(kernel_entry) */ |
| stl_p(p++, 0x37390000 | (kernel_entry & 0xffff)); |
| stl_p(p++, 0x03200009); /* jr $25 */ |
| } |
| |
| static const void *boston_fdt_filter(void *opaque, const void *fdt_orig, |
| const void *match_data, hwaddr *load_addr) |
| { |
| BostonState *s = BOSTON(opaque); |
| MachineState *machine = s->mach; |
| const char *cmdline; |
| int err; |
| void *fdt; |
| size_t fdt_sz, ram_low_sz, ram_high_sz; |
| |
| fdt_sz = fdt_totalsize(fdt_orig) * 2; |
| fdt = g_malloc0(fdt_sz); |
| |
| err = fdt_open_into(fdt_orig, fdt, fdt_sz); |
| if (err) { |
| fprintf(stderr, "unable to open FDT\n"); |
| return NULL; |
| } |
| |
| cmdline = (machine->kernel_cmdline && machine->kernel_cmdline[0]) |
| ? machine->kernel_cmdline : " "; |
| err = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); |
| if (err < 0) { |
| fprintf(stderr, "couldn't set /chosen/bootargs\n"); |
| return NULL; |
| } |
| |
| ram_low_sz = MIN(256 * MiB, machine->ram_size); |
| ram_high_sz = machine->ram_size - ram_low_sz; |
| qemu_fdt_setprop_sized_cells(fdt, "/memory@0", "reg", |
| 1, 0x00000000, 1, ram_low_sz, |
| 1, 0x90000000, 1, ram_high_sz); |
| |
| fdt = g_realloc(fdt, fdt_totalsize(fdt)); |
| qemu_fdt_dumpdtb(fdt, fdt_sz); |
| |
| s->fdt_base = *load_addr; |
| |
| return fdt; |
| } |
| |
| static const void *boston_kernel_filter(void *opaque, const void *kernel, |
| hwaddr *load_addr, hwaddr *entry_addr) |
| { |
| BostonState *s = BOSTON(opaque); |
| |
| s->kernel_entry = *entry_addr; |
| |
| return kernel; |
| } |
| |
| static const struct fit_loader_match boston_matches[] = { |
| { "img,boston" }, |
| { NULL }, |
| }; |
| |
| static const struct fit_loader boston_fit_loader = { |
| .matches = boston_matches, |
| .addr_to_phys = cpu_mips_kseg0_to_phys, |
| .fdt_filter = boston_fdt_filter, |
| .kernel_filter = boston_kernel_filter, |
| }; |
| |
| static inline XilinxPCIEHost * |
| xilinx_pcie_init(MemoryRegion *sys_mem, uint32_t bus_nr, |
| hwaddr cfg_base, uint64_t cfg_size, |
| hwaddr mmio_base, uint64_t mmio_size, |
| qemu_irq irq, bool link_up) |
| { |
| DeviceState *dev; |
| MemoryRegion *cfg, *mmio; |
| |
| dev = qdev_create(NULL, TYPE_XILINX_PCIE_HOST); |
| |
| qdev_prop_set_uint32(dev, "bus_nr", bus_nr); |
| qdev_prop_set_uint64(dev, "cfg_base", cfg_base); |
| qdev_prop_set_uint64(dev, "cfg_size", cfg_size); |
| qdev_prop_set_uint64(dev, "mmio_base", mmio_base); |
| qdev_prop_set_uint64(dev, "mmio_size", mmio_size); |
| qdev_prop_set_bit(dev, "link_up", link_up); |
| |
| qdev_init_nofail(dev); |
| |
| cfg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); |
| memory_region_add_subregion_overlap(sys_mem, cfg_base, cfg, 0); |
| |
| mmio = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); |
| memory_region_add_subregion_overlap(sys_mem, 0, mmio, 0); |
| |
| qdev_connect_gpio_out_named(dev, "interrupt_out", 0, irq); |
| |
| return XILINX_PCIE_HOST(dev); |
| } |
| |
| static void boston_mach_init(MachineState *machine) |
| { |
| DeviceState *dev; |
| BostonState *s; |
| Error *err = NULL; |
| MemoryRegion *flash, *ddr, *ddr_low_alias, *lcd, *platreg; |
| MemoryRegion *sys_mem = get_system_memory(); |
| XilinxPCIEHost *pcie2; |
| PCIDevice *ahci; |
| DriveInfo *hd[6]; |
| Chardev *chr; |
| int fw_size, fit_err; |
| bool is_64b; |
| |
| if ((machine->ram_size % GiB) || |
| (machine->ram_size > (2 * GiB))) { |
| error_report("Memory size must be 1GB or 2GB"); |
| exit(1); |
| } |
| |
| dev = qdev_create(NULL, TYPE_MIPS_BOSTON); |
| qdev_init_nofail(dev); |
| |
| s = BOSTON(dev); |
| s->mach = machine; |
| |
| if (!cpu_supports_cps_smp(machine->cpu_type)) { |
| error_report("Boston requires CPUs which support CPS"); |
| exit(1); |
| } |
| |
| is_64b = cpu_supports_isa(machine->cpu_type, ISA_MIPS64); |
| |
| sysbus_init_child_obj(OBJECT(machine), "cps", OBJECT(&s->cps), |
| sizeof(s->cps), TYPE_MIPS_CPS); |
| object_property_set_str(OBJECT(&s->cps), machine->cpu_type, "cpu-type", |
| &err); |
| object_property_set_int(OBJECT(&s->cps), machine->smp.cpus, "num-vp", &err); |
| object_property_set_bool(OBJECT(&s->cps), true, "realized", &err); |
| |
| if (err != NULL) { |
| error_report("%s", error_get_pretty(err)); |
| exit(1); |
| } |
| |
| sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->cps), 0, 0, 1); |
| |
| flash = g_new(MemoryRegion, 1); |
| memory_region_init_rom(flash, NULL, "boston.flash", 128 * MiB, &err); |
| memory_region_add_subregion_overlap(sys_mem, 0x18000000, flash, 0); |
| |
| ddr = g_new(MemoryRegion, 1); |
| memory_region_allocate_system_memory(ddr, NULL, "boston.ddr", |
| machine->ram_size); |
| memory_region_add_subregion_overlap(sys_mem, 0x80000000, ddr, 0); |
| |
| ddr_low_alias = g_new(MemoryRegion, 1); |
| memory_region_init_alias(ddr_low_alias, NULL, "boston_low.ddr", |
| ddr, 0, MIN(machine->ram_size, (256 * MiB))); |
| memory_region_add_subregion_overlap(sys_mem, 0, ddr_low_alias, 0); |
| |
| xilinx_pcie_init(sys_mem, 0, |
| 0x10000000, 32 * MiB, |
| 0x40000000, 1 * GiB, |
| get_cps_irq(&s->cps, 2), false); |
| |
| xilinx_pcie_init(sys_mem, 1, |
| 0x12000000, 32 * MiB, |
| 0x20000000, 512 * MiB, |
| get_cps_irq(&s->cps, 1), false); |
| |
| pcie2 = xilinx_pcie_init(sys_mem, 2, |
| 0x14000000, 32 * MiB, |
| 0x16000000, 1 * MiB, |
| get_cps_irq(&s->cps, 0), true); |
| |
| platreg = g_new(MemoryRegion, 1); |
| memory_region_init_io(platreg, NULL, &boston_platreg_ops, s, |
| "boston-platregs", 0x1000); |
| memory_region_add_subregion_overlap(sys_mem, 0x17ffd000, platreg, 0); |
| |
| s->uart = serial_mm_init(sys_mem, 0x17ffe000, 2, |
| get_cps_irq(&s->cps, 3), 10000000, |
| serial_hd(0), DEVICE_NATIVE_ENDIAN); |
| |
| lcd = g_new(MemoryRegion, 1); |
| memory_region_init_io(lcd, NULL, &boston_lcd_ops, s, "boston-lcd", 0x8); |
| memory_region_add_subregion_overlap(sys_mem, 0x17fff000, lcd, 0); |
| |
| chr = qemu_chr_new("lcd", "vc:320x240", NULL); |
| qemu_chr_fe_init(&s->lcd_display, chr, NULL); |
| qemu_chr_fe_set_handlers(&s->lcd_display, NULL, NULL, |
| boston_lcd_event, NULL, s, NULL, true); |
| |
| ahci = pci_create_simple_multifunction(&PCI_BRIDGE(&pcie2->root)->sec_bus, |
| PCI_DEVFN(0, 0), |
| true, TYPE_ICH9_AHCI); |
| g_assert(ARRAY_SIZE(hd) == ahci_get_num_ports(ahci)); |
| ide_drive_get(hd, ahci_get_num_ports(ahci)); |
| ahci_ide_create_devs(ahci, hd); |
| |
| if (machine->firmware) { |
| fw_size = load_image_targphys(machine->firmware, |
| 0x1fc00000, 4 * MiB); |
| if (fw_size == -1) { |
| error_report("unable to load firmware image '%s'", |
| machine->firmware); |
| exit(1); |
| } |
| } else if (machine->kernel_filename) { |
| fit_err = load_fit(&boston_fit_loader, machine->kernel_filename, s); |
| if (fit_err) { |
| error_report("unable to load FIT image"); |
| exit(1); |
| } |
| |
| gen_firmware(memory_region_get_ram_ptr(flash) + 0x7c00000, |
| s->kernel_entry, s->fdt_base, is_64b); |
| } else if (!qtest_enabled()) { |
| error_report("Please provide either a -kernel or -bios argument"); |
| exit(1); |
| } |
| } |
| |
| static void boston_mach_class_init(MachineClass *mc) |
| { |
| mc->desc = "MIPS Boston"; |
| mc->init = boston_mach_init; |
| mc->block_default_type = IF_IDE; |
| mc->default_ram_size = 1 * GiB; |
| mc->max_cpus = 16; |
| mc->default_cpu_type = MIPS_CPU_TYPE_NAME("I6400"); |
| } |
| |
| DEFINE_MACHINE("boston", boston_mach_class_init) |
