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     CPUState *env;
  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     CPUState *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     CPUState *env = reset_info->env;
  58
  59     cpu_reset(env);
  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     CPUState *env;
  79     DriveInfo *dinfo;
  80     MemoryRegion *address_space_mem =  get_system_memory();
  81     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
  82     qemu_irq *cpu_irq, irq[32];
  83     ResetInfo *reset_info;
  84     int i;
  85
  86     /* memory map */
  87     target_phys_addr_t flash_base  = 0x04000000;
  88     size_t flash_sector_size       = 256 * 1024;
  89     size_t flash_size              = 32 * 1024 * 1024;
  90     target_phys_addr_t ram_base    = 0x08000000;
  91     size_t ram_size                = 64 * 1024 * 1024;
  92     target_phys_addr_t timer0_base = 0x80002000;
  93     target_phys_addr_t uart0_base  = 0x80006000;
  94     target_phys_addr_t 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     env = cpu_init(cpu_model);
 105     reset_info->env = env;
 106
 107     reset_info->flash_base = flash_base;
 108
 109     memory_region_init_ram(phys_ram, NULL, "lm32_evr.sdram", ram_size);
 110     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 111
 112     dinfo = drive_get(IF_PFLASH, 0, 0);
 113     /* Spansion S29NS128P */
 114     pflash_cfi02_register(flash_base, NULL, "lm32_evr.flash", flash_size,
 115                           dinfo ? dinfo->bdrv : NULL, flash_sector_size,
 116                           flash_size / flash_sector_size, 1, 2,
 117                           0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
 118
 119     /* create irq lines */
 120     cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
 121     env->pic_state = lm32_pic_init(*cpu_irq);
 122     for (i = 0; i < 32; i++) {
 123         irq[i] = qdev_get_gpio_in(env->pic_state, i);
 124     }
 125
 126     sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
 127     sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
 128     sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
 129
 130     /* make sure juart isn't the first chardev */
 131     env->juart_state = lm32_juart_init();
 132
 133     reset_info->bootstrap_pc = flash_base;
 134
 135     if (kernel_filename) {
 136         uint64_t entry;
 137         int kernel_size;
 138
 139         kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
 140                                1, ELF_MACHINE, 0);
 141         reset_info->bootstrap_pc = entry;
 142
 143         if (kernel_size < 0) {
 144             kernel_size = load_image_targphys(kernel_filename, ram_base,
 145                                               ram_size);
 146             reset_info->bootstrap_pc = ram_base;
 147         }
 148
 149         if (kernel_size < 0) {
 150             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 151                     kernel_filename);
 152             exit(1);
 153         }
 154     }
 155
 156     qemu_register_reset(main_cpu_reset, reset_info);
 157 }
 158
 159 static void lm32_uclinux_init(ram_addr_t ram_size_not_used,
 160                           const char *boot_device,
 161                           const char *kernel_filename,
 162                           const char *kernel_cmdline,
 163                           const char *initrd_filename, const char *cpu_model)
 164 {
 165     CPUState *env;
 166     DriveInfo *dinfo;
 167     MemoryRegion *address_space_mem =  get_system_memory();
 168     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
 169     qemu_irq *cpu_irq, irq[32];
 170     HWSetup *hw;
 171     ResetInfo *reset_info;
 172     int i;
 173
 174     /* memory map */
 175     target_phys_addr_t flash_base   = 0x04000000;
 176     size_t flash_sector_size        = 256 * 1024;
 177     size_t flash_size               = 32 * 1024 * 1024;
 178     target_phys_addr_t ram_base     = 0x08000000;
 179     size_t ram_size                 = 64 * 1024 * 1024;
 180     target_phys_addr_t uart0_base   = 0x80000000;
 181     target_phys_addr_t timer0_base  = 0x80002000;
 182     target_phys_addr_t timer1_base  = 0x80010000;
 183     target_phys_addr_t timer2_base  = 0x80012000;
 184     int uart0_irq                   = 0;
 185     int timer0_irq                  = 1;
 186     int timer1_irq                  = 20;
 187     int timer2_irq                  = 21;
 188     target_phys_addr_t hwsetup_base = 0x0bffe000;
 189     target_phys_addr_t cmdline_base = 0x0bfff000;
 190     target_phys_addr_t initrd_base  = 0x08400000;
 191     size_t initrd_max               = 0x01000000;
 192
 193     reset_info = g_malloc0(sizeof(ResetInfo));
 194
 195     if (cpu_model == NULL) {
 196         cpu_model = "lm32-full";
 197     }
 198     env = cpu_init(cpu_model);
 199     reset_info->env = env;
 200
 201     reset_info->flash_base = flash_base;
 202
 203     memory_region_init_ram(phys_ram, NULL, "lm32_uclinux.sdram", ram_size);
 204     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 205
 206     dinfo = drive_get(IF_PFLASH, 0, 0);
 207     /* Spansion S29NS128P */
 208     pflash_cfi02_register(flash_base, NULL, "lm32_uclinux.flash", flash_size,
 209                           dinfo ? dinfo->bdrv : NULL, flash_sector_size,
 210                           flash_size / flash_sector_size, 1, 2,
 211                           0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
 212
 213     /* create irq lines */
 214     cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
 215     env->pic_state = lm32_pic_init(*cpu_irq);
 216     for (i = 0; i < 32; i++) {
 217         irq[i] = qdev_get_gpio_in(env->pic_state, i);
 218     }
 219
 220     sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
 221     sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
 222     sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
 223     sysbus_create_simple("lm32-timer", timer2_base, irq[timer2_irq]);
 224
 225     /* make sure juart isn't the first chardev */
 226     env->juart_state = lm32_juart_init();
 227
 228     reset_info->bootstrap_pc = flash_base;
 229
 230     if (kernel_filename) {
 231         uint64_t entry;
 232         int kernel_size;
 233
 234         kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
 235                                1, ELF_MACHINE, 0);
 236         reset_info->bootstrap_pc = entry;
 237
 238         if (kernel_size < 0) {
 239             kernel_size = load_image_targphys(kernel_filename, ram_base,
 240                                               ram_size);
 241             reset_info->bootstrap_pc = ram_base;
 242         }
 243
 244         if (kernel_size < 0) {
 245             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 246                     kernel_filename);
 247             exit(1);
 248         }
 249     }
 250
 251     /* generate a rom with the hardware description */
 252     hw = hwsetup_init();
 253     hwsetup_add_cpu(hw, "LM32", 75000000);
 254     hwsetup_add_flash(hw, "flash", flash_base, flash_size);
 255     hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, ram_size);
 256     hwsetup_add_timer(hw, "timer0", timer0_base, timer0_irq);
 257     hwsetup_add_timer(hw, "timer1_dev_only", timer1_base, timer1_irq);
 258     hwsetup_add_timer(hw, "timer2_dev_only", timer2_base, timer2_irq);
 259     hwsetup_add_uart(hw, "uart", uart0_base, uart0_irq);
 260     hwsetup_add_trailer(hw);
 261     hwsetup_create_rom(hw, hwsetup_base);
 262     hwsetup_free(hw);
 263
 264     reset_info->hwsetup_base = hwsetup_base;
 265
 266     if (kernel_cmdline && strlen(kernel_cmdline)) {
 267         pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
 268                 kernel_cmdline);
 269         reset_info->cmdline_base = cmdline_base;
 270     }
 271
 272     if (initrd_filename) {
 273         size_t initrd_size;
 274         initrd_size = load_image_targphys(initrd_filename, initrd_base,
 275                 initrd_max);
 276         reset_info->initrd_base = initrd_base;
 277         reset_info->initrd_size = initrd_size;
 278     }
 279
 280     qemu_register_reset(main_cpu_reset, reset_info);
 281 }
 282
 283 static QEMUMachine lm32_evr_machine = {
 284     .name = "lm32-evr",
 285     .desc = "LatticeMico32 EVR32 eval system",
 286     .init = lm32_evr_init,
 287     .is_default = 1
 288 };
 289
 290 static QEMUMachine lm32_uclinux_machine = {
 291     .name = "lm32-uclinux",
 292     .desc = "lm32 platform for uClinux and u-boot by Theobroma Systems",
 293     .init = lm32_uclinux_init,
 294     .is_default = 0
 295 };
 296
 297 static void lm32_machine_init(void)
 298 {
 299     qemu_register_machine(&lm32_uclinux_machine);
 300     qemu_register_machine(&lm32_evr_machine);
 301 }
 302
 303 machine_init(lm32_machine_init);