hw/sun4m.c

   1 /*
   2  * QEMU Sun4m System Emulator
   3  *
   4  * Copyright (c) 2003-2005 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "vl.h"
  25
  26 #define KERNEL_LOAD_ADDR     0x00004000
  27 #define CMDLINE_ADDR         0x007ff000
  28 #define INITRD_LOAD_ADDR     0x00800000
  29 #define PROM_SIZE_MAX        (256 * 1024)
  30 #define PROM_ADDR            0xffd00000
  31 #define PROM_FILENAMEB       "proll.bin"
  32 #define PROM_FILENAMEE       "proll.elf"
  33 #define PHYS_JJ_EEPROM  0x71200000      /* m48t08 */
  34 #define PHYS_JJ_IDPROM_OFF      0x1FD8
  35 #define PHYS_JJ_EEPROM_SIZE     0x2000
  36 // IRQs are not PIL ones, but master interrupt controller register
  37 // bits
  38 #define PHYS_JJ_IOMMU   0x10000000      /* I/O MMU */
  39 #define PHYS_JJ_TCX_FB  0x50000000      /* TCX frame buffer */
  40 #define PHYS_JJ_SLAVIO  0x70000000      /* Slavio base */
  41 #define PHYS_JJ_ESPDMA  0x78400000      /* ESP DMA controller */
  42 #define PHYS_JJ_ESP     0x78800000      /* ESP SCSI */
  43 #define PHYS_JJ_ESP_IRQ    18
  44 #define PHYS_JJ_LEDMA   0x78400010      /* Lance DMA controller */
  45 #define PHYS_JJ_LE      0x78C00000      /* Lance ethernet */
  46 #define PHYS_JJ_LE_IRQ     16
  47 #define PHYS_JJ_CLOCK   0x71D00000      /* Per-CPU timer/counter, L14 */
  48 #define PHYS_JJ_CLOCK_IRQ  7
  49 #define PHYS_JJ_CLOCK1  0x71D10000      /* System timer/counter, L10 */
  50 #define PHYS_JJ_CLOCK1_IRQ 19
  51 #define PHYS_JJ_INTR0   0x71E00000      /* Per-CPU interrupt control registers */
  52 #define PHYS_JJ_INTR_G  0x71E10000      /* Master interrupt control registers */
  53 #define PHYS_JJ_MS_KBD  0x71000000      /* Mouse and keyboard */
  54 #define PHYS_JJ_MS_KBD_IRQ    14
  55 #define PHYS_JJ_SER     0x71100000      /* Serial */
  56 #define PHYS_JJ_SER_IRQ    15
  57 #define PHYS_JJ_FDC     0x71400000      /* Floppy */
  58 #define PHYS_JJ_FLOPPY_IRQ 22
  59 #define PHYS_JJ_ME_IRQ 30               /* Module error, power fail */
  60 #define MAX_CPUS 16
  61
  62 /* TSC handling */
  63
  64 uint64_t cpu_get_tsc()
  65 {
  66     return qemu_get_clock(vm_clock);
  67 }
  68
  69 int DMA_get_channel_mode (int nchan)
  70 {
  71     return 0;
  72 }
  73 int DMA_read_memory (int nchan, void *buf, int pos, int size)
  74 {
  75     return 0;
  76 }
  77 int DMA_write_memory (int nchan, void *buf, int pos, int size)
  78 {
  79     return 0;
  80 }
  81 void DMA_hold_DREQ (int nchan) {}
  82 void DMA_release_DREQ (int nchan) {}
  83 void DMA_schedule(int nchan) {}
  84 void DMA_run (void) {}
  85 void DMA_init (int high_page_enable) {}
  86 void DMA_register_channel (int nchan,
  87                            DMA_transfer_handler transfer_handler,
  88                            void *opaque)
  89 {
  90 }
  91
  92 static void nvram_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value)
  93 {
  94     m48t59_write(nvram, addr++, (value >> 8) & 0xff);
  95     m48t59_write(nvram, addr++, value & 0xff);
  96 }
  97
  98 static void nvram_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value)
  99 {
 100     m48t59_write(nvram, addr++, value >> 24);
 101     m48t59_write(nvram, addr++, (value >> 16) & 0xff);
 102     m48t59_write(nvram, addr++, (value >> 8) & 0xff);
 103     m48t59_write(nvram, addr++, value & 0xff);
 104 }
 105
 106 static void nvram_set_string (m48t59_t *nvram, uint32_t addr,
 107                        const unsigned char *str, uint32_t max)
 108 {
 109     unsigned int i;
 110
 111     for (i = 0; i < max && str[i] != '\0'; i++) {
 112         m48t59_write(nvram, addr + i, str[i]);
 113     }
 114     m48t59_write(nvram, addr + max - 1, '\0');
 115 }
 116
 117 static m48t59_t *nvram;
 118
 119 extern int nographic;
 120
 121 static void nvram_init(m48t59_t *nvram, uint8_t *macaddr, const char *cmdline,
 122                        int boot_device, uint32_t RAM_size,
 123                        uint32_t kernel_size,
 124                        int width, int height, int depth)
 125 {
 126     unsigned char tmp = 0;
 127     int i, j;
 128
 129     // Try to match PPC NVRAM
 130     nvram_set_string(nvram, 0x00, "QEMU_BIOS", 16);
 131     nvram_set_lword(nvram,  0x10, 0x00000001); /* structure v1 */
 132     // NVRAM_size, arch not applicable
 133     m48t59_write(nvram, 0x2D, smp_cpus & 0xff);
 134     m48t59_write(nvram, 0x2E, 0);
 135     m48t59_write(nvram, 0x2F, nographic & 0xff);
 136     nvram_set_lword(nvram,  0x30, RAM_size);
 137     m48t59_write(nvram, 0x34, boot_device & 0xff);
 138     nvram_set_lword(nvram,  0x38, KERNEL_LOAD_ADDR);
 139     nvram_set_lword(nvram,  0x3C, kernel_size);
 140     if (cmdline) {
 141         strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
 142         nvram_set_lword(nvram,  0x40, CMDLINE_ADDR);
 143         nvram_set_lword(nvram,  0x44, strlen(cmdline));
 144     }
 145     // initrd_image, initrd_size passed differently
 146     nvram_set_word(nvram,   0x54, width);
 147     nvram_set_word(nvram,   0x56, height);
 148     nvram_set_word(nvram,   0x58, depth);
 149
 150     // Sun4m specific use
 151     i = 0x1fd8;
 152     m48t59_write(nvram, i++, 0x01);
 153     m48t59_write(nvram, i++, 0x80); /* Sun4m OBP */
 154     j = 0;
 155     m48t59_write(nvram, i++, macaddr[j++]);
 156     m48t59_write(nvram, i++, macaddr[j++]);
 157     m48t59_write(nvram, i++, macaddr[j++]);
 158     m48t59_write(nvram, i++, macaddr[j++]);
 159     m48t59_write(nvram, i++, macaddr[j++]);
 160     m48t59_write(nvram, i, macaddr[j]);
 161
 162     /* Calculate checksum */
 163     for (i = 0x1fd8; i < 0x1fe7; i++) {
 164         tmp ^= m48t59_read(nvram, i);
 165     }
 166     m48t59_write(nvram, 0x1fe7, tmp);
 167 }
 168
 169 static void *slavio_intctl;
 170
 171 void pic_info()
 172 {
 173     slavio_pic_info(slavio_intctl);
 174 }
 175
 176 void irq_info()
 177 {
 178     slavio_irq_info(slavio_intctl);
 179 }
 180
 181 void pic_set_irq(int irq, int level)
 182 {
 183     slavio_pic_set_irq(slavio_intctl, irq, level);
 184 }
 185
 186 void pic_set_irq_cpu(int irq, int level, unsigned int cpu)
 187 {
 188     slavio_pic_set_irq_cpu(slavio_intctl, irq, level, cpu);
 189 }
 190
 191 static void *iommu;
 192
 193 uint32_t iommu_translate(uint32_t addr)
 194 {
 195     return iommu_translate_local(iommu, addr);
 196 }
 197
 198 static void *slavio_misc;
 199
 200 void qemu_system_powerdown(void)
 201 {
 202     slavio_set_power_fail(slavio_misc, 1);
 203 }
 204
 205 static void main_cpu_reset(void *opaque)
 206 {
 207     CPUState *env = opaque;
 208     cpu_reset(env);
 209 }
 210
 211 /* Sun4m hardware initialisation */
 212 static void sun4m_init(int ram_size, int vga_ram_size, int boot_device,
 213                        DisplayState *ds, const char **fd_filename, int snapshot,
 214                        const char *kernel_filename, const char *kernel_cmdline,
 215                        const char *initrd_filename)
 216 {
 217     CPUState *env, *envs[MAX_CPUS];
 218     char buf[1024];
 219     int ret, linux_boot;
 220     unsigned int i;
 221     long vram_size = 0x100000, prom_offset, initrd_size, kernel_size;
 222
 223     linux_boot = (kernel_filename != NULL);
 224
 225     /* init CPUs */
 226     for(i = 0; i < smp_cpus; i++) {
 227         env = cpu_init();
 228         envs[i] = env;
 229         if (i != 0)
 230             env->halted = 1;
 231         register_savevm("cpu", i, 3, cpu_save, cpu_load, env);
 232         qemu_register_reset(main_cpu_reset, env);
 233     }
 234     /* allocate RAM */
 235     cpu_register_physical_memory(0, ram_size, 0);
 236
 237     iommu = iommu_init(PHYS_JJ_IOMMU);
 238     slavio_intctl = slavio_intctl_init(PHYS_JJ_INTR0, PHYS_JJ_INTR_G);
 239     for(i = 0; i < smp_cpus; i++) {
 240         slavio_intctl_set_cpu(slavio_intctl, i, envs[i]);
 241     }
 242
 243     tcx_init(ds, PHYS_JJ_TCX_FB, phys_ram_base + ram_size, ram_size, vram_size, graphic_width, graphic_height);
 244     if (nd_table[0].vlan) {
 245         if (nd_table[0].model == NULL
 246             || strcmp(nd_table[0].model, "lance") == 0) {
 247             lance_init(&nd_table[0], PHYS_JJ_LE_IRQ, PHYS_JJ_LE, PHYS_JJ_LEDMA);
 248         } else {
 249             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd_table[0].model);
 250             exit (1);
 251         }
 252     }
 253     nvram = m48t59_init(0, PHYS_JJ_EEPROM, 0, PHYS_JJ_EEPROM_SIZE, 8);
 254     for (i = 0; i < MAX_CPUS; i++) {
 255         slavio_timer_init(PHYS_JJ_CLOCK + i * TARGET_PAGE_SIZE, PHYS_JJ_CLOCK_IRQ, 0, i);
 256     }
 257     slavio_timer_init(PHYS_JJ_CLOCK1, PHYS_JJ_CLOCK1_IRQ, 2, (unsigned int)-1);
 258     slavio_serial_ms_kbd_init(PHYS_JJ_MS_KBD, PHYS_JJ_MS_KBD_IRQ);
 259     // Slavio TTYA (base+4, Linux ttyS0) is the first Qemu serial device
 260     // Slavio TTYB (base+0, Linux ttyS1) is the second Qemu serial device
 261     slavio_serial_init(PHYS_JJ_SER, PHYS_JJ_SER_IRQ, serial_hds[1], serial_hds[0]);
 262     fdctrl_init(PHYS_JJ_FLOPPY_IRQ, 0, 1, PHYS_JJ_FDC, fd_table);
 263     esp_init(bs_table, PHYS_JJ_ESP_IRQ, PHYS_JJ_ESP, PHYS_JJ_ESPDMA);
 264     slavio_misc = slavio_misc_init(PHYS_JJ_SLAVIO, PHYS_JJ_ME_IRQ);
 265
 266     prom_offset = ram_size + vram_size;
 267     cpu_register_physical_memory(PROM_ADDR,
 268                                  (PROM_SIZE_MAX + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK,
 269                                  prom_offset | IO_MEM_ROM);
 270
 271     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, PROM_FILENAMEE);
 272     ret = load_elf(buf, 0, NULL);
 273     if (ret < 0) {
 274         snprintf(buf, sizeof(buf), "%s/%s", bios_dir, PROM_FILENAMEB);
 275         ret = load_image(buf, phys_ram_base + prom_offset);
 276     }
 277     if (ret < 0) {
 278         fprintf(stderr, "qemu: could not load prom '%s'\n",
 279                 buf);
 280         exit(1);
 281     }
 282
 283     kernel_size = 0;
 284     if (linux_boot) {
 285         kernel_size = load_elf(kernel_filename, -0xf0000000, NULL);
 286         if (kernel_size < 0)
 287             kernel_size = load_aout(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
 288         if (kernel_size < 0)
 289             kernel_size = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
 290         if (kernel_size < 0) {
 291             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 292                     kernel_filename);
 293             exit(1);
 294         }
 295
 296         /* load initrd */
 297         initrd_size = 0;
 298         if (initrd_filename) {
 299             initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
 300             if (initrd_size < 0) {
 301                 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 302                         initrd_filename);
 303                 exit(1);
 304             }
 305         }
 306         if (initrd_size > 0) {
 307             for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
 308                 if (ldl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i)
 309                     == 0x48647253) { // HdrS
 310                     stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 16, INITRD_LOAD_ADDR);
 311                     stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 20, initrd_size);
 312                     break;
 313                 }
 314             }
 315         }
 316     }
 317     nvram_init(nvram, (uint8_t *)&nd_table[0].macaddr, kernel_cmdline, boot_device, ram_size, kernel_size, graphic_width, graphic_height, graphic_depth);
 318 }
 319
 320 QEMUMachine sun4m_machine = {
 321     "sun4m",
 322     "Sun4m platform",
 323     sun4m_init,
 324 };