hw/lm32/lm32_boards.c

   1 /*
   2  *  QEMU models for LatticeMico32 uclinux and evr32 boards.
   3  *
   4  *  Copyright (c) 2010 Michael Walle <michael@walle.cc>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "qemu/osdep.h"
  21 #include "hw/sysbus.h"
  22 #include "hw/hw.h"
  23 #include "hw/block/flash.h"
  24 #include "hw/devices.h"
  25 #include "hw/boards.h"
  26 #include "hw/loader.h"
  27 #include "sysemu/block-backend.h"
  28 #include "elf.h"
  29 #include "lm32_hwsetup.h"
  30 #include "lm32.h"
  31 #include "exec/address-spaces.h"
  32
  33 typedef struct {
  34     LM32CPU *cpu;
  35     hwaddr bootstrap_pc;
  36     hwaddr flash_base;
  37     hwaddr hwsetup_base;
  38     hwaddr initrd_base;
  39     size_t initrd_size;
  40     hwaddr cmdline_base;
  41 } ResetInfo;
  42
  43 static void cpu_irq_handler(void *opaque, int irq, int level)
  44 {
  45     LM32CPU *cpu = opaque;
  46     CPUState *cs = CPU(cpu);
  47
  48     if (level) {
  49         cpu_interrupt(cs, CPU_INTERRUPT_HARD);
  50     } else {
  51         cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
  52     }
  53 }
  54
  55 static void main_cpu_reset(void *opaque)
  56 {
  57     ResetInfo *reset_info = opaque;
  58     CPULM32State *env = &reset_info->cpu->env;
  59
  60     cpu_reset(CPU(reset_info->cpu));
  61
  62     /* init defaults */
  63     env->pc = (uint32_t)reset_info->bootstrap_pc;
  64     env->regs[R_R1] = (uint32_t)reset_info->hwsetup_base;
  65     env->regs[R_R2] = (uint32_t)reset_info->cmdline_base;
  66     env->regs[R_R3] = (uint32_t)reset_info->initrd_base;
  67     env->regs[R_R4] = (uint32_t)(reset_info->initrd_base +
  68         reset_info->initrd_size);
  69     env->eba = reset_info->flash_base;
  70     env->deba = reset_info->flash_base;
  71 }
  72
  73 static void lm32_evr_init(MachineState *machine)
  74 {
  75     const char *cpu_model = machine->cpu_model;
  76     const char *kernel_filename = machine->kernel_filename;
  77     LM32CPU *cpu;
  78     CPULM32State *env;
  79     DriveInfo *dinfo;
  80     MemoryRegion *address_space_mem =  get_system_memory();
  81     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
  82     qemu_irq irq[32];
  83     ResetInfo *reset_info;
  84     int i;
  85
  86     /* memory map */
  87     hwaddr flash_base  = 0x04000000;
  88     size_t flash_sector_size       = 256 * 1024;
  89     size_t flash_size              = 32 * 1024 * 1024;
  90     hwaddr ram_base    = 0x08000000;
  91     size_t ram_size                = 64 * 1024 * 1024;
  92     hwaddr timer0_base = 0x80002000;
  93     hwaddr uart0_base  = 0x80006000;
  94     hwaddr timer1_base = 0x8000a000;
  95     int uart0_irq                  = 0;
  96     int timer0_irq                 = 1;
  97     int timer1_irq                 = 3;
  98
  99     reset_info = g_malloc0(sizeof(ResetInfo));
 100
 101     if (cpu_model == NULL) {
 102         cpu_model = "lm32-full";
 103     }
 104     cpu = cpu_lm32_init(cpu_model);
 105     if (cpu == NULL) {
 106         fprintf(stderr, "qemu: unable to find CPU '%s'\n", cpu_model);
 107         exit(1);
 108     }
 109
 110     env = &cpu->env;
 111     reset_info->cpu = cpu;
 112
 113     reset_info->flash_base = flash_base;
 114
 115     memory_region_allocate_system_memory(phys_ram, NULL, "lm32_evr.sdram",
 116                                          ram_size);
 117     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 118
 119     dinfo = drive_get(IF_PFLASH, 0, 0);
 120     /* Spansion S29NS128P */
 121     pflash_cfi02_register(flash_base, NULL, "lm32_evr.flash", flash_size,
 122                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 123                           flash_sector_size, flash_size / flash_sector_size,
 124                           1, 2, 0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
 125
 126     /* create irq lines */
 127     env->pic_state = lm32_pic_init(qemu_allocate_irq(cpu_irq_handler, cpu, 0));
 128     for (i = 0; i < 32; i++) {
 129         irq[i] = qdev_get_gpio_in(env->pic_state, i);
 130     }
 131
 132     sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
 133     sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
 134     sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
 135
 136     /* make sure juart isn't the first chardev */
 137     env->juart_state = lm32_juart_init();
 138
 139     reset_info->bootstrap_pc = flash_base;
 140
 141     if (kernel_filename) {
 142         uint64_t entry;
 143         int kernel_size;
 144
 145         kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
 146                                1, EM_LATTICEMICO32, 0);
 147         reset_info->bootstrap_pc = entry;
 148
 149         if (kernel_size < 0) {
 150             kernel_size = load_image_targphys(kernel_filename, ram_base,
 151                                               ram_size);
 152             reset_info->bootstrap_pc = ram_base;
 153         }
 154
 155         if (kernel_size < 0) {
 156             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 157                     kernel_filename);
 158             exit(1);
 159         }
 160     }
 161
 162     qemu_register_reset(main_cpu_reset, reset_info);
 163 }
 164
 165 static void lm32_uclinux_init(MachineState *machine)
 166 {
 167     const char *cpu_model = machine->cpu_model;
 168     const char *kernel_filename = machine->kernel_filename;
 169     const char *kernel_cmdline = machine->kernel_cmdline;
 170     const char *initrd_filename = machine->initrd_filename;
 171     LM32CPU *cpu;
 172     CPULM32State *env;
 173     DriveInfo *dinfo;
 174     MemoryRegion *address_space_mem =  get_system_memory();
 175     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
 176     qemu_irq irq[32];
 177     HWSetup *hw;
 178     ResetInfo *reset_info;
 179     int i;
 180
 181     /* memory map */
 182     hwaddr flash_base   = 0x04000000;
 183     size_t flash_sector_size        = 256 * 1024;
 184     size_t flash_size               = 32 * 1024 * 1024;
 185     hwaddr ram_base     = 0x08000000;
 186     size_t ram_size                 = 64 * 1024 * 1024;
 187     hwaddr uart0_base   = 0x80000000;
 188     hwaddr timer0_base  = 0x80002000;
 189     hwaddr timer1_base  = 0x80010000;
 190     hwaddr timer2_base  = 0x80012000;
 191     int uart0_irq                   = 0;
 192     int timer0_irq                  = 1;
 193     int timer1_irq                  = 20;
 194     int timer2_irq                  = 21;
 195     hwaddr hwsetup_base = 0x0bffe000;
 196     hwaddr cmdline_base = 0x0bfff000;
 197     hwaddr initrd_base  = 0x08400000;
 198     size_t initrd_max               = 0x01000000;
 199
 200     reset_info = g_malloc0(sizeof(ResetInfo));
 201
 202     if (cpu_model == NULL) {
 203         cpu_model = "lm32-full";
 204     }
 205     cpu = cpu_lm32_init(cpu_model);
 206     if (cpu == NULL) {
 207         fprintf(stderr, "qemu: unable to find CPU '%s'\n", cpu_model);
 208         exit(1);
 209     }
 210
 211     env = &cpu->env;
 212     reset_info->cpu = cpu;
 213
 214     reset_info->flash_base = flash_base;
 215
 216     memory_region_allocate_system_memory(phys_ram, NULL,
 217                                          "lm32_uclinux.sdram", ram_size);
 218     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 219
 220     dinfo = drive_get(IF_PFLASH, 0, 0);
 221     /* Spansion S29NS128P */
 222     pflash_cfi02_register(flash_base, NULL, "lm32_uclinux.flash", flash_size,
 223                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 224                           flash_sector_size, flash_size / flash_sector_size,
 225                           1, 2, 0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
 226
 227     /* create irq lines */
 228     env->pic_state = lm32_pic_init(qemu_allocate_irq(cpu_irq_handler, env, 0));
 229     for (i = 0; i < 32; i++) {
 230         irq[i] = qdev_get_gpio_in(env->pic_state, i);
 231     }
 232
 233     sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
 234     sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
 235     sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
 236     sysbus_create_simple("lm32-timer", timer2_base, irq[timer2_irq]);
 237
 238     /* make sure juart isn't the first chardev */
 239     env->juart_state = lm32_juart_init();
 240
 241     reset_info->bootstrap_pc = flash_base;
 242
 243     if (kernel_filename) {
 244         uint64_t entry;
 245         int kernel_size;
 246
 247         kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
 248                                1, EM_LATTICEMICO32, 0);
 249         reset_info->bootstrap_pc = entry;
 250
 251         if (kernel_size < 0) {
 252             kernel_size = load_image_targphys(kernel_filename, ram_base,
 253                                               ram_size);
 254             reset_info->bootstrap_pc = ram_base;
 255         }
 256
 257         if (kernel_size < 0) {
 258             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 259                     kernel_filename);
 260             exit(1);
 261         }
 262     }
 263
 264     /* generate a rom with the hardware description */
 265     hw = hwsetup_init();
 266     hwsetup_add_cpu(hw, "LM32", 75000000);
 267     hwsetup_add_flash(hw, "flash", flash_base, flash_size);
 268     hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, ram_size);
 269     hwsetup_add_timer(hw, "timer0", timer0_base, timer0_irq);
 270     hwsetup_add_timer(hw, "timer1_dev_only", timer1_base, timer1_irq);
 271     hwsetup_add_timer(hw, "timer2_dev_only", timer2_base, timer2_irq);
 272     hwsetup_add_uart(hw, "uart", uart0_base, uart0_irq);
 273     hwsetup_add_trailer(hw);
 274     hwsetup_create_rom(hw, hwsetup_base);
 275     hwsetup_free(hw);
 276
 277     reset_info->hwsetup_base = hwsetup_base;
 278
 279     if (kernel_cmdline && strlen(kernel_cmdline)) {
 280         pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
 281                 kernel_cmdline);
 282         reset_info->cmdline_base = cmdline_base;
 283     }
 284
 285     if (initrd_filename) {
 286         size_t initrd_size;
 287         initrd_size = load_image_targphys(initrd_filename, initrd_base,
 288                 initrd_max);
 289         reset_info->initrd_base = initrd_base;
 290         reset_info->initrd_size = initrd_size;
 291     }
 292
 293     qemu_register_reset(main_cpu_reset, reset_info);
 294 }
 295
 296 static void lm32_evr_class_init(ObjectClass *oc, void *data)
 297 {
 298     MachineClass *mc = MACHINE_CLASS(oc);
 299
 300     mc->desc = "LatticeMico32 EVR32 eval system";
 301     mc->init = lm32_evr_init;
 302     mc->is_default = 1;
 303 }
 304
 305 static const TypeInfo lm32_evr_type = {
 306     .name = MACHINE_TYPE_NAME("lm32-evr"),
 307     .parent = TYPE_MACHINE,
 308     .class_init = lm32_evr_class_init,
 309 };
 310
 311 static void lm32_uclinux_class_init(ObjectClass *oc, void *data)
 312 {
 313     MachineClass *mc = MACHINE_CLASS(oc);
 314
 315     mc->desc = "lm32 platform for uClinux and u-boot by Theobroma Systems";
 316     mc->init = lm32_uclinux_init;
 317     mc->is_default = 0;
 318 }
 319
 320 static const TypeInfo lm32_uclinux_type = {
 321     .name = MACHINE_TYPE_NAME("lm32-uclinux"),
 322     .parent = TYPE_MACHINE,
 323     .class_init = lm32_uclinux_class_init,
 324 };
 325
 326 static void lm32_machine_init(void)
 327 {
 328     type_register_static(&lm32_evr_type);
 329     type_register_static(&lm32_uclinux_type);
 330 }
 331
 332 machine_init(lm32_machine_init)