milkymist_init(QEMUMachineInitArgs *args) { const char *cpu_model = args->cpu_model; const char *kernel_filename = args->kernel_filename; const char *kernel_cmdline = args->kernel_cmdline; const char *initrd_filename = args->initrd_filename; LM32CPU *cpu; CPULM32State *env; int kernel_size; DriveInfo *dinfo; MemoryRegion *address_space_mem = get_system_memory(); MemoryRegion *phys_sdram = g_new(MemoryRegion, 1); qemu_irq irq[32], *cpu_irq; int i; char *bios_filename; ResetInfo *reset_info; /* memory map */ target_phys_addr_t flash_base = 0x00000000; size_t flash_sector_size = 128 * 1024; size_t flash_size = 32 * 1024 * 1024; target_phys_addr_t sdram_base = 0x40000000; size_t sdram_size = 128 * 1024 * 1024; target_phys_addr_t initrd_base = sdram_base + 0x1002000; target_phys_addr_t cmdline_base = sdram_base + 0x1000000; size_t initrd_max = sdram_size - 0x1002000; reset_info = g_malloc0(sizeof(ResetInfo)); if (cpu_model == NULL) { cpu_model = "lm32-full"; } cpu = cpu_lm32_init(cpu_model); env = &cpu->env; reset_info->cpu = cpu; cpu_lm32_set_phys_msb_ignore(env, 1); memory_region_init_ram(phys_sdram, "milkymist.sdram", sdram_size); vmstate_register_ram_global(phys_sdram); memory_region_add_subregion(address_space_mem, sdram_base, phys_sdram); dinfo = drive_get(IF_PFLASH, 0, 0); /* Numonyx JS28F256J3F105 */ pflash_cfi01_register(flash_base, NULL, "milkymist.flash", flash_size, dinfo ? dinfo->bdrv : NULL, flash_sector_size, flash_size / flash_sector_size, 2, 0x00, 0x89, 0x00, 0x1d, 1); /* create irq lines */ cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1); env->pic_state = lm32_pic_init(*cpu_irq); for (i = 0; i < 32; i++) { irq[i] = qdev_get_gpio_in(env->pic_state, i); } /* load bios rom */ if (bios_name == NULL) { bios_name = BIOS_FILENAME; } bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); if (bios_filename) { load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE); } 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) { fprintf(stderr, "qemu: could not load Milkymist One bios '%s'\n", bios_name); exit(1); } milkymist_uart_create(0x60000000, irq[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]); 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(); if (kernel_filename) { uint64_t entry; /* Boots a kernel elf binary. */ kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL, 1, ELF_MACHINE, 0); reset_info->bootstrap_pc = entry; if (kernel_size < 0) { kernel_size = load_image_targphys(kernel_filename, sdram_base, sdram_size); reset_info->bootstrap_pc = sdram_base; } if (kernel_size < 0) { fprintf(stderr, "qemu: could not load kernel '%s'\n", 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); }