hw/lm32_boards.c

   1 /*
   2  *  QEMU models for LatticeMico32 uclinux and evr32 boards.
   3  *
   4  *  Copyright (c) 2010 Michael Walle <[email protected]>
   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 "sysbus.h"
  21 #include "hw.h"
  22 #include "net.h"
  23 #include "flash.h"
  24 #include "devices.h"
  25 #include "boards.h"
  26 #include "loader.h"
  27 #include "blockdev.h"
  28 #include "elf.h"
  29 #include "lm32_hwsetup.h"
  30 #include "lm32.h"
  31 #include "exec-memory.h"
  32
  33 typedef struct {
  34     LM32CPU *cpu;
  35     target_phys_addr_t bootstrap_pc;
  36     target_phys_addr_t flash_base;
  37     target_phys_addr_t hwsetup_base;
  38     target_phys_addr_t initrd_base;
  39     size_t initrd_size;
  40     target_phys_addr_t cmdline_base;
  41 } ResetInfo;
  42
  43 static void cpu_irq_handler(void *opaque, int irq, int level)
  44 {
  45     CPULM32State *env = opaque;
  46
  47     if (level) {
  48         cpu_interrupt(env, CPU_INTERRUPT_HARD);
  49     } else {
  50         cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
  51     }
  52 }
  53
  54 static void main_cpu_reset(void *opaque)
  55 {
  56     ResetInfo *reset_info = opaque;
  57     CPULM32State *env = &reset_info->cpu->env;
  58
  59     cpu_reset(CPU(reset_info->cpu));
  60
  61     /* init defaults */
  62     env->pc = (uint32_t)reset_info->bootstrap_pc;
  63     env->regs[R_R1] = (uint32_t)reset_info->hwsetup_base;
  64     env->regs[R_R2] = (uint32_t)reset_info->cmdline_base;
  65     env->regs[R_R3] = (uint32_t)reset_info->initrd_base;
  66     env->regs[R_R4] = (uint32_t)(reset_info->initrd_base +
  67         reset_info->initrd_size);
  68     env->eba = reset_info->flash_base;
  69     env->deba = reset_info->flash_base;
  70 }
  71
  72 static void lm32_evr_init(ram_addr_t ram_size_not_used,
  73                           const char *boot_device,
  74                           const char *kernel_filename,
  75                           const char *kernel_cmdline,
  76                           const char *initrd_filename, const char *cpu_model)
  77 {
  78     LM32CPU *cpu;
  79     CPULM32State *env;
  80     DriveInfo *dinfo;
  81     MemoryRegion *address_space_mem =  get_system_memory();
  82     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
  83     qemu_irq *cpu_irq, irq[32];
  84     ResetInfo *reset_info;
  85     int i;
  86
  87     /* memory map */
  88     target_phys_addr_t flash_base  = 0x04000000;
  89     size_t flash_sector_size       = 256 * 1024;
  90     size_t flash_size              = 32 * 1024 * 1024;
  91     target_phys_addr_t ram_base    = 0x08000000;
  92     size_t ram_size                = 64 * 1024 * 1024;
  93     target_phys_addr_t timer0_base = 0x80002000;
  94     target_phys_addr_t uart0_base  = 0x80006000;
  95     target_phys_addr_t timer1_base = 0x8000a000;
  96     int uart0_irq                  = 0;
  97     int timer0_irq                 = 1;
  98     int timer1_irq                 = 3;
  99
 100     reset_info = g_malloc0(sizeof(ResetInfo));
 101
 102     if (cpu_model == NULL) {
 103         cpu_model = "lm32-full";
 104     }
 105     cpu = cpu_lm32_init(cpu_model);
 106     env = &cpu->env;
 107     reset_info->cpu = cpu;
 108
 109     reset_info->flash_base = flash_base;
 110
 111     memory_region_init_ram(phys_ram, "lm32_evr.sdram", ram_size);
 112     vmstate_register_ram_global(phys_ram);
 113     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 114
 115     dinfo = drive_get(IF_PFLASH, 0, 0);
 116     /* Spansion S29NS128P */
 117     pflash_cfi02_register(flash_base, NULL, "lm32_evr.flash", flash_size,
 118                           dinfo ? dinfo->bdrv : NULL, flash_sector_size,
 119                           flash_size / flash_sector_size, 1, 2,
 120                           0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
 121
 122     /* create irq lines */
 123     cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
 124     env->pic_state = lm32_pic_init(*cpu_irq);
 125     for (i = 0; i < 32; i++) {
 126         irq[i] = qdev_get_gpio_in(env->pic_state, i);
 127     }
 128
 129     sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
 130     sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
 131     sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
 132
 133     /* make sure juart isn't the first chardev */
 134     env->juart_state = lm32_juart_init();
 135
 136     reset_info->bootstrap_pc = flash_base;
 137
 138     if (kernel_filename) {
 139         uint64_t entry;
 140         int kernel_size;
 141
 142         kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
 143                                1, ELF_MACHINE, 0);
 144         reset_info->bootstrap_pc = entry;
 145
 146         if (kernel_size < 0) {
 147             kernel_size = load_image_targphys(kernel_filename, ram_base,
 148                                               ram_size);
 149             reset_info->bootstrap_pc = ram_base;
 150         }
 151
 152         if (kernel_size < 0) {
 153             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 154                     kernel_filename);
 155             exit(1);
 156         }
 157     }
 158
 159     qemu_register_reset(main_cpu_reset, reset_info);
 160 }
 161
 162 static void lm32_uclinux_init(ram_addr_t ram_size_not_used,
 163                           const char *boot_device,
 164                           const char *kernel_filename,
 165                           const char *kernel_cmdline,
 166                           const char *initrd_filename, const char *cpu_model)
 167 {
 168     LM32CPU *cpu;
 169     CPULM32State *env;
 170     DriveInfo *dinfo;
 171     MemoryRegion *address_space_mem =  get_system_memory();
 172     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
 173     qemu_irq *cpu_irq, irq[32];
 174     HWSetup *hw;
 175     ResetInfo *reset_info;
 176     int i;
 177
 178     /* memory map */
 179     target_phys_addr_t flash_base   = 0x04000000;
 180     size_t flash_sector_size        = 256 * 1024;
 181     size_t flash_size               = 32 * 1024 * 1024;
 182     target_phys_addr_t ram_base     = 0x08000000;
 183     size_t ram_size                 = 64 * 1024 * 1024;
 184     target_phys_addr_t uart0_base   = 0x80000000;
 185     target_phys_addr_t timer0_base  = 0x80002000;
 186     target_phys_addr_t timer1_base  = 0x80010000;
 187     target_phys_addr_t timer2_base  = 0x80012000;
 188     int uart0_irq                   = 0;
 189     int timer0_irq                  = 1;
 190     int timer1_irq                  = 20;
 191     int timer2_irq                  = 21;
 192     target_phys_addr_t hwsetup_base = 0x0bffe000;
 193     target_phys_addr_t cmdline_base = 0x0bfff000;
 194     target_phys_addr_t initrd_base  = 0x08400000;
 195     size_t initrd_max               = 0x01000000;
 196
 197     reset_info = g_malloc0(sizeof(ResetInfo));
 198
 199     if (cpu_model == NULL) {
 200         cpu_model = "lm32-full";
 201     }
 202     cpu = cpu_lm32_init(cpu_model);
 203     env = &cpu->env;
 204     reset_info->cpu = cpu;
 205
 206     reset_info->flash_base = flash_base;
 207
 208     memory_region_init_ram(phys_ram, "lm32_uclinux.sdram", ram_size);
 209     vmstate_register_ram_global(phys_ram);
 210     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 211
 212     dinfo = drive_get(IF_PFLASH, 0, 0);
 213     /* Spansion S29NS128P */
 214     pflash_cfi02_register(flash_base, NULL, "lm32_uclinux.flash", flash_size,
 215                           dinfo ? dinfo->bdrv : NULL, flash_sector_size,
 216                           flash_size / flash_sector_size, 1, 2,
 217                           0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
 218
 219     /* create irq lines */
 220     cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
 221     env->pic_state = lm32_pic_init(*cpu_irq);
 222     for (i = 0; i < 32; i++) {
 223         irq[i] = qdev_get_gpio_in(env->pic_state, i);
 224     }
 225
 226     sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
 227     sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
 228     sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
 229     sysbus_create_simple("lm32-timer", timer2_base, irq[timer2_irq]);
 230
 231     /* make sure juart isn't the first chardev */
 232     env->juart_state = lm32_juart_init();
 233
 234     reset_info->bootstrap_pc = flash_base;
 235
 236     if (kernel_filename) {
 237         uint64_t entry;
 238         int kernel_size;
 239
 240         kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
 241                                1, ELF_MACHINE, 0);
 242         reset_info->bootstrap_pc = entry;
 243
 244         if (kernel_size < 0) {
 245             kernel_size = load_image_targphys(kernel_filename, ram_base,
 246                                               ram_size);
 247             reset_info->bootstrap_pc = ram_base;
 248         }
 249
 250         if (kernel_size < 0) {
 251             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 252                     kernel_filename);
 253             exit(1);
 254         }
 255     }
 256
 257     /* generate a rom with the hardware description */
 258     hw = hwsetup_init();
 259     hwsetup_add_cpu(hw, "LM32", 75000000);
 260     hwsetup_add_flash(hw, "flash", flash_base, flash_size);
 261     hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, ram_size);
 262     hwsetup_add_timer(hw, "timer0", timer0_base, timer0_irq);
 263     hwsetup_add_timer(hw, "timer1_dev_only", timer1_base, timer1_irq);
 264     hwsetup_add_timer(hw, "timer2_dev_only", timer2_base, timer2_irq);
 265     hwsetup_add_uart(hw, "uart", uart0_base, uart0_irq);
 266     hwsetup_add_trailer(hw);
 267     hwsetup_create_rom(hw, hwsetup_base);
 268     hwsetup_free(hw);
 269
 270     reset_info->hwsetup_base = hwsetup_base;
 271
 272     if (kernel_cmdline && strlen(kernel_cmdline)) {
 273         pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
 274                 kernel_cmdline);
 275         reset_info->cmdline_base = cmdline_base;
 276     }
 277
 278     if (initrd_filename) {
 279         size_t initrd_size;
 280         initrd_size = load_image_targphys(initrd_filename, initrd_base,
 281                 initrd_max);
 282         reset_info->initrd_base = initrd_base;
 283         reset_info->initrd_size = initrd_size;
 284     }
 285
 286     qemu_register_reset(main_cpu_reset, reset_info);
 287 }
 288
 289 static QEMUMachine lm32_evr_machine = {
 290     .name = "lm32-evr",
 291     .desc = "LatticeMico32 EVR32 eval system",
 292     .init = lm32_evr_init,
 293     .is_default = 1
 294 };
 295
 296 static QEMUMachine lm32_uclinux_machine = {
 297     .name = "lm32-uclinux",
 298     .desc = "lm32 platform for uClinux and u-boot by Theobroma Systems",
 299     .init = lm32_uclinux_init,
 300     .is_default = 0
 301 };
 302
 303 static void lm32_machine_init(void)
 304 {
 305     qemu_register_machine(&lm32_uclinux_machine);
 306     qemu_register_machine(&lm32_evr_machine);
 307 }
 308
 309 machine_init(lm32_machine_init);