/* * QEMU Sun4m System Emulator * * Copyright (c) 2003-2005 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "vl.h" //#define DEBUG_IRQ /* * Sun4m architecture was used in the following machines: * * SPARCserver 6xxMP/xx * SPARCclassic (SPARCclassic Server)(SPARCstation LC) (4/15), SPARCclassic X (4/10) * SPARCstation LX/ZX (4/30) * SPARCstation Voyager * SPARCstation 10/xx, SPARCserver 10/xx * SPARCstation 5, SPARCserver 5 * SPARCstation 20/xx, SPARCserver 20 * SPARCstation 4 * * See for example: http://www.sunhelp.org/faq/sunref1.html */ #ifdef DEBUG_IRQ #define DPRINTF(fmt, args...) \ do { printf("CPUIRQ: " fmt , ##args); } while (0) #else #define DPRINTF(fmt, args...) #endif #define KERNEL_LOAD_ADDR 0x00004000 #define CMDLINE_ADDR 0x007ff000 #define INITRD_LOAD_ADDR 0x00800000 #define PROM_SIZE_MAX (256 * 1024) #define PROM_ADDR 0xffd00000 #define PROM_FILENAME "openbios-sparc32" #define MAX_CPUS 16 #define MAX_PILS 16 struct hwdef { target_phys_addr_t iommu_base, slavio_base; target_phys_addr_t intctl_base, counter_base, nvram_base, ms_kb_base; target_phys_addr_t serial_base, fd_base; target_phys_addr_t dma_base, esp_base, le_base; target_phys_addr_t tcx_base, cs_base, power_base; long vram_size, nvram_size; // IRQ numbers are not PIL ones, but master interrupt controller register // bit numbers int intctl_g_intr, esp_irq, le_irq, clock_irq, clock1_irq; int ser_irq, ms_kb_irq, fd_irq, me_irq, cs_irq; int machine_id; // For NVRAM uint32_t intbit_to_level[32]; }; /* TSC handling */ uint64_t cpu_get_tsc() { return qemu_get_clock(vm_clock); } int DMA_get_channel_mode (int nchan) { return 0; } int DMA_read_memory (int nchan, void *buf, int pos, int size) { return 0; } int DMA_write_memory (int nchan, void *buf, int pos, int size) { return 0; } void DMA_hold_DREQ (int nchan) {} void DMA_release_DREQ (int nchan) {} void DMA_schedule(int nchan) {} void DMA_run (void) {} void DMA_init (int high_page_enable) {} void DMA_register_channel (int nchan, DMA_transfer_handler transfer_handler, void *opaque) { } static void nvram_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value) { m48t59_write(nvram, addr++, (value >> 8) & 0xff); m48t59_write(nvram, addr++, value & 0xff); } static void nvram_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value) { m48t59_write(nvram, addr++, value >> 24); m48t59_write(nvram, addr++, (value >> 16) & 0xff); m48t59_write(nvram, addr++, (value >> 8) & 0xff); m48t59_write(nvram, addr++, value & 0xff); } static void nvram_set_string (m48t59_t *nvram, uint32_t addr, const unsigned char *str, uint32_t max) { unsigned int i; for (i = 0; i < max && str[i] != '\0'; i++) { m48t59_write(nvram, addr + i, str[i]); } m48t59_write(nvram, addr + max - 1, '\0'); } static uint32_t nvram_set_var (m48t59_t *nvram, uint32_t addr, const unsigned char *str) { uint32_t len; len = strlen(str) + 1; nvram_set_string(nvram, addr, str, len); return addr + len; } static void nvram_finish_partition (m48t59_t *nvram, uint32_t start, uint32_t end) { unsigned int i, sum; // Length divided by 16 m48t59_write(nvram, start + 2, ((end - start) >> 12) & 0xff); m48t59_write(nvram, start + 3, ((end - start) >> 4) & 0xff); // Checksum sum = m48t59_read(nvram, start); for (i = 0; i < 14; i++) { sum += m48t59_read(nvram, start + 2 + i); sum = (sum + ((sum & 0xff00) >> 8)) & 0xff; } m48t59_write(nvram, start + 1, sum & 0xff); } extern int nographic; static void nvram_init(m48t59_t *nvram, uint8_t *macaddr, const char *cmdline, int boot_device, uint32_t RAM_size, uint32_t kernel_size, int width, int height, int depth, int machine_id) { unsigned char tmp = 0; unsigned int i, j; uint32_t start, end; // Try to match PPC NVRAM nvram_set_string(nvram, 0x00, "QEMU_BIOS", 16); nvram_set_lword(nvram, 0x10, 0x00000001); /* structure v1 */ // NVRAM_size, arch not applicable m48t59_write(nvram, 0x2D, smp_cpus & 0xff); m48t59_write(nvram, 0x2E, 0); m48t59_write(nvram, 0x2F, nographic & 0xff); nvram_set_lword(nvram, 0x30, RAM_size); m48t59_write(nvram, 0x34, boot_device & 0xff); nvram_set_lword(nvram, 0x38, KERNEL_LOAD_ADDR); nvram_set_lword(nvram, 0x3C, kernel_size); if (cmdline) { strcpy(phys_ram_base + CMDLINE_ADDR, cmdline); nvram_set_lword(nvram, 0x40, CMDLINE_ADDR); nvram_set_lword(nvram, 0x44, strlen(cmdline)); } // initrd_image, initrd_size passed differently nvram_set_word(nvram, 0x54, width); nvram_set_word(nvram, 0x56, height); nvram_set_word(nvram, 0x58, depth); // OpenBIOS nvram variables // Variable partition start = 252; m48t59_write(nvram, start, 0x70); nvram_set_string(nvram, start + 4, "system", 12); end = start + 16; for (i = 0; i < nb_prom_envs; i++) end = nvram_set_var(nvram, end, prom_envs[i]); m48t59_write(nvram, end++ , 0); end = start + ((end - start + 15) & ~15); nvram_finish_partition(nvram, start, end); // free partition start = end; m48t59_write(nvram, start, 0x7f); nvram_set_string(nvram, start + 4, "free", 12); end = 0x1fd0; nvram_finish_partition(nvram, start, end); // Sun4m specific use start = i = 0x1fd8; m48t59_write(nvram, i++, 0x01); m48t59_write(nvram, i++, machine_id); j = 0; m48t59_write(nvram, i++, macaddr[j++]); m48t59_write(nvram, i++, macaddr[j++]); m48t59_write(nvram, i++, macaddr[j++]); m48t59_write(nvram, i++, macaddr[j++]); m48t59_write(nvram, i++, macaddr[j++]); m48t59_write(nvram, i, macaddr[j]); /* Calculate checksum */ for (i = start; i < start + 15; i++) { tmp ^= m48t59_read(nvram, i); } m48t59_write(nvram, start + 15, tmp); } static void *slavio_intctl; void pic_info() { slavio_pic_info(slavio_intctl); } void irq_info() { slavio_irq_info(slavio_intctl); } void cpu_check_irqs(CPUState *env) { if (env->pil_in && (env->interrupt_index == 0 || (env->interrupt_index & ~15) == TT_EXTINT)) { unsigned int i; for (i = 15; i > 0; i--) { if (env->pil_in & (1 << i)) { int old_interrupt = env->interrupt_index; env->interrupt_index = TT_EXTINT | i; if (old_interrupt != env->interrupt_index) cpu_interrupt(env, CPU_INTERRUPT_HARD); break; } } } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) { env->interrupt_index = 0; cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); } } static void cpu_set_irq(void *opaque, int irq, int level) { CPUState *env = opaque; if (level) { DPRINTF("Raise CPU IRQ %d\n", irq); env->halted = 0; env->pil_in |= 1 << irq; cpu_check_irqs(env); } else { DPRINTF("Lower CPU IRQ %d\n", irq); env->pil_in &= ~(1 << irq); cpu_check_irqs(env); } } static void dummy_cpu_set_irq(void *opaque, int irq, int level) { } static void *slavio_misc; void qemu_system_powerdown(void) { slavio_set_power_fail(slavio_misc, 1); } static void main_cpu_reset(void *opaque) { CPUState *env = opaque; cpu_reset(env); env->halted = 0; } static void secondary_cpu_reset(void *opaque) { CPUState *env = opaque; cpu_reset(env); env->halted = 1; } static void *sun4m_hw_init(const struct hwdef *hwdef, int RAM_size, DisplayState *ds, const char *cpu_model) { CPUState *env, *envs[MAX_CPUS]; unsigned int i; void *iommu, *espdma, *ledma, *main_esp, *nvram; const sparc_def_t *def; qemu_irq *cpu_irqs[MAX_CPUS], *slavio_irq, *slavio_cpu_irq, *espdma_irq, *ledma_irq; qemu_irq *esp_reset, *le_reset; /* init CPUs */ sparc_find_by_name(cpu_model, &def); if (def == NULL) { fprintf(stderr, "Unable to find Sparc CPU definition\n"); exit(1); } for(i = 0; i < smp_cpus; i++) { env = cpu_init(); cpu_sparc_register(env, def); envs[i] = env; if (i == 0) { qemu_register_reset(main_cpu_reset, env); } else { qemu_register_reset(secondary_cpu_reset, env); env->halted = 1; } register_savevm("cpu", i, 3, cpu_save, cpu_load, env); cpu_irqs[i] = qemu_allocate_irqs(cpu_set_irq, envs[i], MAX_PILS); } for (i = smp_cpus; i < MAX_CPUS; i++) cpu_irqs[i] = qemu_allocate_irqs(dummy_cpu_set_irq, NULL, MAX_PILS); /* allocate RAM */ cpu_register_physical_memory(0, RAM_size, 0); iommu = iommu_init(hwdef->iommu_base); slavio_intctl = slavio_intctl_init(hwdef->intctl_base, hwdef->intctl_base + 0x10000ULL, &hwdef->intbit_to_level[0], &slavio_irq, &slavio_cpu_irq, cpu_irqs, hwdef->clock_irq); espdma = sparc32_dma_init(hwdef->dma_base, slavio_irq[hwdef->esp_irq], iommu, &espdma_irq, &esp_reset); ledma = sparc32_dma_init(hwdef->dma_base + 16ULL, slavio_irq[hwdef->le_irq], iommu, &ledma_irq, &le_reset); if (graphic_depth != 8 && graphic_depth != 24) { fprintf(stderr, "qemu: Unsupported depth: %d\n", graphic_depth); exit (1); } tcx_init(ds, hwdef->tcx_base, phys_ram_base + RAM_size, RAM_size, hwdef->vram_size, graphic_width, graphic_height, graphic_depth); if (nd_table[0].model == NULL || strcmp(nd_table[0].model, "lance") == 0) { lance_init(&nd_table[0], hwdef->le_base, ledma, *ledma_irq, le_reset); } else if (strcmp(nd_table[0].model, "?") == 0) { fprintf(stderr, "qemu: Supported NICs: lance\n"); exit (1); } else { fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd_table[0].model); exit (1); } nvram = m48t59_init(slavio_irq[0], hwdef->nvram_base, 0, hwdef->nvram_size, 8); for (i = 0; i < MAX_CPUS; i++) { slavio_timer_init(hwdef->counter_base + (target_phys_addr_t)(i * TARGET_PAGE_SIZE), slavio_cpu_irq[i], 0); } slavio_timer_init(hwdef->counter_base + 0x10000ULL, slavio_irq[hwdef->clock1_irq], 2); slavio_serial_ms_kbd_init(hwdef->ms_kb_base, slavio_irq[hwdef->ms_kb_irq]); // Slavio TTYA (base+4, Linux ttyS0) is the first Qemu serial device // Slavio TTYB (base+0, Linux ttyS1) is the second Qemu serial device slavio_serial_init(hwdef->serial_base, slavio_irq[hwdef->ser_irq], serial_hds[1], serial_hds[0]); fdctrl_init(slavio_irq[hwdef->fd_irq], 0, 1, hwdef->fd_base, fd_table); main_esp = esp_init(bs_table, hwdef->esp_base, espdma, *espdma_irq, esp_reset); for (i = 0; i < MAX_DISKS; i++) { if (bs_table[i]) { esp_scsi_attach(main_esp, bs_table[i], i); } } slavio_misc = slavio_misc_init(hwdef->slavio_base, hwdef->power_base, slavio_irq[hwdef->me_irq]); if (hwdef->cs_base != (target_phys_addr_t)-1) cs_init(hwdef->cs_base, hwdef->cs_irq, slavio_intctl); return nvram; } static void sun4m_load_kernel(long vram_size, int RAM_size, int boot_device, const char *kernel_filename, const char *kernel_cmdline, const char *initrd_filename, int machine_id, void *nvram) { int ret, linux_boot; char buf[1024]; unsigned int i; long prom_offset, initrd_size, kernel_size; linux_boot = (kernel_filename != NULL); prom_offset = RAM_size + vram_size; cpu_register_physical_memory(PROM_ADDR, (PROM_SIZE_MAX + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK, prom_offset | IO_MEM_ROM); snprintf(buf, sizeof(buf), "%s/%s", bios_dir, PROM_FILENAME); ret = load_elf(buf, 0, NULL, NULL, NULL); if (ret < 0) { fprintf(stderr, "qemu: could not load prom '%s'\n", buf); exit(1); } kernel_size = 0; if (linux_boot) { kernel_size = load_elf(kernel_filename, -0xf0000000, NULL, NULL, NULL); if (kernel_size < 0) kernel_size = load_aout(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR); if (kernel_size < 0) kernel_size = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR); if (kernel_size < 0) { fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); exit(1); } /* load initrd */ initrd_size = 0; if (initrd_filename) { initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR); if (initrd_size < 0) { fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", initrd_filename); exit(1); } } if (initrd_size > 0) { for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) { if (ldl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i) == 0x48647253) { // HdrS stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 16, INITRD_LOAD_ADDR); stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 20, initrd_size); break; } } } } nvram_init(nvram, (uint8_t *)&nd_table[0].macaddr, kernel_cmdline, boot_device, RAM_size, kernel_size, graphic_width, graphic_height, graphic_depth, machine_id); } static const struct hwdef hwdefs[] = { /* SS-5 */ { .iommu_base = 0x10000000, .tcx_base = 0x50000000, .cs_base = 0x6c000000, .slavio_base = 0x70000000, .ms_kb_base = 0x71000000, .serial_base = 0x71100000, .nvram_base = 0x71200000, .fd_base = 0x71400000, .counter_base = 0x71d00000, .intctl_base = 0x71e00000, .dma_base = 0x78400000, .esp_base = 0x78800000, .le_base = 0x78c00000, .power_base = 0x7a000000, .vram_size = 0x00100000, .nvram_size = 0x2000, .esp_irq = 18, .le_irq = 16, .clock_irq = 7, .clock1_irq = 19, .ms_kb_irq = 14, .ser_irq = 15, .fd_irq = 22, .me_irq = 30, .cs_irq = 5, .machine_id = 0x80, .intbit_to_level = { 2, 3, 5, 7, 9, 11, 0, 14, 3, 5, 7, 9, 11, 13, 12, 12, 6, 0, 4, 10, 8, 0, 11, 0, 0, 0, 0, 0, 15, 0, 15, 0, }, }, /* SS-10 */ { .iommu_base = 0xfe0000000ULL, .tcx_base = 0xe20000000ULL, .cs_base = -1, .slavio_base = 0xff0000000ULL, .ms_kb_base = 0xff1000000ULL, .serial_base = 0xff1100000ULL, .nvram_base = 0xff1200000ULL, .fd_base = 0xff1700000ULL, .counter_base = 0xff1300000ULL, .intctl_base = 0xff1400000ULL, .dma_base = 0xef0400000ULL, .esp_base = 0xef0800000ULL, .le_base = 0xef0c00000ULL, .power_base = 0xefa000000ULL, .vram_size = 0x00100000, .nvram_size = 0x2000, .esp_irq = 18, .le_irq = 16, .clock_irq = 7, .clock1_irq = 19, .ms_kb_irq = 14, .ser_irq = 15, .fd_irq = 22, .me_irq = 30, .cs_irq = -1, .machine_id = 0x72, .intbit_to_level = { 2, 3, 5, 7, 9, 11, 0, 14, 3, 5, 7, 9, 11, 13, 12, 12, 6, 0, 4, 10, 8, 0, 11, 0, 0, 0, 0, 0, 15, 0, 15, 0, }, }, }; static void sun4m_common_init(int RAM_size, int boot_device, DisplayState *ds, const char *kernel_filename, const char *kernel_cmdline, const char *initrd_filename, const char *cpu_model, unsigned int machine, int max_ram) { void *nvram; if ((unsigned int)RAM_size > (unsigned int)max_ram) { fprintf(stderr, "qemu: Too much memory for this machine: %d, maximum %d\n", (unsigned int)RAM_size / (1024 * 1024), (unsigned int)max_ram / (1024 * 1024)); exit(1); } nvram = sun4m_hw_init(&hwdefs[machine], RAM_size, ds, cpu_model); sun4m_load_kernel(hwdefs[machine].vram_size, RAM_size, boot_device, kernel_filename, kernel_cmdline, initrd_filename, hwdefs[machine].machine_id, nvram); } /* SPARCstation 5 hardware initialisation */ static void ss5_init(int RAM_size, int vga_ram_size, int boot_device, DisplayState *ds, const char **fd_filename, int snapshot, const char *kernel_filename, const char *kernel_cmdline, const char *initrd_filename, const char *cpu_model) { if (cpu_model == NULL) cpu_model = "Fujitsu MB86904"; sun4m_common_init(RAM_size, boot_device, ds, kernel_filename, kernel_cmdline, initrd_filename, cpu_model, 0, 0x10000000); } /* SPARCstation 10 hardware initialisation */ static void ss10_init(int RAM_size, int vga_ram_size, int boot_device, DisplayState *ds, const char **fd_filename, int snapshot, const char *kernel_filename, const char *kernel_cmdline, const char *initrd_filename, const char *cpu_model) { if (cpu_model == NULL) cpu_model = "TI SuperSparc II"; sun4m_common_init(RAM_size, boot_device, ds, kernel_filename, kernel_cmdline, initrd_filename, cpu_model, 1, PROM_ADDR); // XXX prom overlap, actually first 4GB ok } QEMUMachine ss5_machine = { "SS-5", "Sun4m platform, SPARCstation 5", ss5_init, }; QEMUMachine ss10_machine = { "SS-10", "Sun4m platform, SPARCstation 10", ss10_init, };