| /* |
| * QEMU model for the Milkymist board. |
| * |
| * Copyright (c) 2010 Michael Walle <michael@walle.cc> |
| * |
| * 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 2.1 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 "qemu/error-report.h" |
| #include "qemu-common.h" |
| #include "qemu/datadir.h" |
| #include "cpu.h" |
| #include "hw/sysbus.h" |
| #include "hw/irq.h" |
| #include "hw/block/flash.h" |
| #include "sysemu/sysemu.h" |
| #include "sysemu/qtest.h" |
| #include "sysemu/reset.h" |
| #include "hw/boards.h" |
| #include "hw/loader.h" |
| #include "hw/qdev-properties.h" |
| #include "elf.h" |
| #include "milkymist-hw.h" |
| #include "hw/display/milkymist_tmu2.h" |
| #include "hw/sd/sd.h" |
| #include "lm32.h" |
| #include "exec/address-spaces.h" |
| #include "qemu/cutils.h" |
| |
| #define BIOS_FILENAME "mmone-bios.bin" |
| #define BIOS_OFFSET 0x00860000 |
| #define BIOS_SIZE (512 * KiB) |
| #define KERNEL_LOAD_ADDR 0x40000000 |
| |
| typedef struct { |
| LM32CPU *cpu; |
| hwaddr bootstrap_pc; |
| hwaddr flash_base; |
| hwaddr initrd_base; |
| size_t initrd_size; |
| hwaddr cmdline_base; |
| } ResetInfo; |
| |
| static void cpu_irq_handler(void *opaque, int irq, int level) |
| { |
| LM32CPU *cpu = opaque; |
| CPUState *cs = CPU(cpu); |
| |
| if (level) { |
| cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
| } else { |
| cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
| } |
| } |
| |
| static void main_cpu_reset(void *opaque) |
| { |
| ResetInfo *reset_info = opaque; |
| CPULM32State *env = &reset_info->cpu->env; |
| |
| cpu_reset(CPU(reset_info->cpu)); |
| |
| /* init defaults */ |
| env->pc = reset_info->bootstrap_pc; |
| env->regs[R_R1] = reset_info->cmdline_base; |
| env->regs[R_R2] = reset_info->initrd_base; |
| env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size; |
| env->eba = reset_info->flash_base; |
| env->deba = reset_info->flash_base; |
| } |
| |
| static DeviceState *milkymist_memcard_create(hwaddr base) |
| { |
| DeviceState *dev; |
| DriveInfo *dinfo; |
| |
| dev = qdev_new("milkymist-memcard"); |
| sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); |
| sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); |
| |
| dinfo = drive_get_next(IF_SD); |
| if (dinfo) { |
| DeviceState *card; |
| |
| card = qdev_new(TYPE_SD_CARD); |
| qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo), |
| &error_fatal); |
| qdev_realize_and_unref(card, qdev_get_child_bus(dev, "sd-bus"), |
| &error_fatal); |
| } |
| |
| return dev; |
| } |
| |
| static void |
| milkymist_init(MachineState *machine) |
| { |
| MachineClass *mc = MACHINE_GET_CLASS(machine); |
| const char *bios_name = machine->firmware ?: BIOS_FILENAME; |
| const char *kernel_filename = machine->kernel_filename; |
| const char *kernel_cmdline = machine->kernel_cmdline; |
| const char *initrd_filename = machine->initrd_filename; |
| LM32CPU *cpu; |
| CPULM32State *env; |
| int kernel_size; |
| DriveInfo *dinfo; |
| MemoryRegion *address_space_mem = get_system_memory(); |
| qemu_irq irq[32]; |
| int i; |
| char *bios_filename; |
| ResetInfo *reset_info; |
| |
| if (machine->ram_size != mc->default_ram_size) { |
| char *sz = size_to_str(mc->default_ram_size); |
| error_report("Invalid RAM size, should be %s", sz); |
| g_free(sz); |
| exit(EXIT_FAILURE); |
| } |
| |
| /* memory map */ |
| hwaddr flash_base = 0x00000000; |
| size_t flash_sector_size = 128 * KiB; |
| size_t flash_size = 32 * MiB; |
| hwaddr sdram_base = 0x40000000; |
| |
| hwaddr initrd_base = sdram_base + 0x1002000; |
| hwaddr cmdline_base = sdram_base + 0x1000000; |
| size_t initrd_max = machine->ram_size - 0x1002000; |
| |
| reset_info = g_malloc0(sizeof(ResetInfo)); |
| |
| cpu = LM32_CPU(cpu_create(machine->cpu_type)); |
| |
| env = &cpu->env; |
| reset_info->cpu = cpu; |
| |
| cpu_lm32_set_phys_msb_ignore(env, 1); |
| |
| memory_region_add_subregion(address_space_mem, sdram_base, machine->ram); |
| |
| dinfo = drive_get(IF_PFLASH, 0, 0); |
| /* Numonyx JS28F256J3F105 */ |
| pflash_cfi01_register(flash_base, "milkymist.flash", flash_size, |
| dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, |
| flash_sector_size, 2, 0x00, 0x89, 0x00, 0x1d, 1); |
| |
| /* create irq lines */ |
| env->pic_state = lm32_pic_init(qemu_allocate_irq(cpu_irq_handler, cpu, 0)); |
| for (i = 0; i < 32; i++) { |
| irq[i] = qdev_get_gpio_in(env->pic_state, i); |
| } |
| |
| /* load bios rom */ |
| bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
| |
| if (bios_filename) { |
| if (load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE) < 0) { |
| error_report("could not load bios '%s'", bios_filename); |
| exit(1); |
| } |
| } |
| |
| reset_info->bootstrap_pc = BIOS_OFFSET; |
| |
| /* if no kernel is given no valid bios rom is a fatal error */ |
| if (!kernel_filename && !dinfo && !bios_filename && !qtest_enabled()) { |
| error_report("could not load Milkymist One bios '%s'", bios_name); |
| exit(1); |
| } |
| g_free(bios_filename); |
| |
| milkymist_uart_create(0x60000000, irq[0], serial_hd(0)); |
| milkymist_sysctl_create(0x60001000, irq[1], irq[2], irq[3], |
| 80000000, 0x10014d31, 0x0000041f, 0x00000001); |
| milkymist_hpdmc_create(0x60002000); |
| milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff); |
| milkymist_memcard_create(0x60004000); |
| milkymist_ac97_create(0x60005000, irq[4], irq[5], irq[6], irq[7]); |
| milkymist_pfpu_create(0x60006000, irq[8]); |
| if (machine->enable_graphics) { |
| milkymist_tmu2_create(0x60007000, irq[9]); |
| } |
| milkymist_minimac2_create(0x60008000, 0x30000000, irq[10], irq[11]); |
| milkymist_softusb_create(0x6000f000, irq[15], |
| 0x20000000, 0x1000, 0x20020000, 0x2000); |
| |
| /* make sure juart isn't the first chardev */ |
| env->juart_state = lm32_juart_init(serial_hd(1)); |
| |
| if (kernel_filename) { |
| uint64_t entry; |
| |
| /* Boots a kernel elf binary. */ |
| kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, |
| &entry, NULL, NULL, NULL, |
| 1, EM_LATTICEMICO32, 0, 0); |
| reset_info->bootstrap_pc = entry; |
| |
| if (kernel_size < 0) { |
| kernel_size = load_image_targphys(kernel_filename, sdram_base, |
| machine->ram_size); |
| reset_info->bootstrap_pc = sdram_base; |
| } |
| |
| if (kernel_size < 0) { |
| error_report("could not load kernel '%s'", kernel_filename); |
| exit(1); |
| } |
| } |
| |
| if (kernel_cmdline && strlen(kernel_cmdline)) { |
| pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE, |
| kernel_cmdline); |
| reset_info->cmdline_base = (uint32_t)cmdline_base; |
| } |
| |
| if (initrd_filename) { |
| size_t initrd_size; |
| initrd_size = load_image_targphys(initrd_filename, initrd_base, |
| initrd_max); |
| reset_info->initrd_base = (uint32_t)initrd_base; |
| reset_info->initrd_size = (uint32_t)initrd_size; |
| } |
| |
| qemu_register_reset(main_cpu_reset, reset_info); |
| } |
| |
| static void milkymist_machine_init(MachineClass *mc) |
| { |
| mc->desc = "Milkymist One"; |
| mc->init = milkymist_init; |
| mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full"); |
| mc->default_ram_size = 128 * MiB; |
| mc->default_ram_id = "milkymist.sdram"; |
| } |
| |
| DEFINE_MACHINE("milkymist", milkymist_machine_init) |
