hw/petalogix_s3adsp1800_mmu.c

   1 /*
   2  * Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800
   3  * boards.
   4  *
   5  * Copyright (c) 2009 Edgar E. Iglesias.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25
  26 #include "sysbus.h"
  27 #include "hw.h"
  28 #include "net/net.h"
  29 #include "flash.h"
  30 #include "sysemu/sysemu.h"
  31 #include "devices.h"
  32 #include "boards.h"
  33 #include "xilinx.h"
  34 #include "sysemu/blockdev.h"
  35 #include "exec/address-spaces.h"
  36
  37 #include "microblaze_boot.h"
  38 #include "microblaze_pic_cpu.h"
  39
  40 #define LMB_BRAM_SIZE  (128 * 1024)
  41 #define FLASH_SIZE     (16 * 1024 * 1024)
  42
  43 #define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"
  44
  45 #define MEMORY_BASEADDR 0x90000000
  46 #define FLASH_BASEADDR 0xa0000000
  47 #define INTC_BASEADDR 0x81800000
  48 #define TIMER_BASEADDR 0x83c00000
  49 #define UARTLITE_BASEADDR 0x84000000
  50 #define ETHLITE_BASEADDR 0x81000000
  51
  52 static void machine_cpu_reset(MicroBlazeCPU *cpu)
  53 {
  54     CPUMBState *env = &cpu->env;
  55
  56     env->pvr.regs[10] = 0x0c000000; /* spartan 3a dsp family.  */
  57 }
  58
  59 static void
  60 petalogix_s3adsp1800_init(QEMUMachineInitArgs *args)
  61 {
  62     ram_addr_t ram_size = args->ram_size;
  63     const char *cpu_model = args->cpu_model;
  64     DeviceState *dev;
  65     MicroBlazeCPU *cpu;
  66     CPUMBState *env;
  67     DriveInfo *dinfo;
  68     int i;
  69     hwaddr ddr_base = MEMORY_BASEADDR;
  70     MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
  71     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
  72     qemu_irq irq[32], *cpu_irq;
  73     MemoryRegion *sysmem = get_system_memory();
  74
  75     /* init CPUs */
  76     if (cpu_model == NULL) {
  77         cpu_model = "microblaze";
  78     }
  79     cpu = cpu_mb_init(cpu_model);
  80     env = &cpu->env;
  81
  82     /* Attach emulated BRAM through the LMB.  */
  83     memory_region_init_ram(phys_lmb_bram,
  84                            "petalogix_s3adsp1800.lmb_bram", LMB_BRAM_SIZE);
  85     vmstate_register_ram_global(phys_lmb_bram);
  86     memory_region_add_subregion(sysmem, 0x00000000, phys_lmb_bram);
  87
  88     memory_region_init_ram(phys_ram, "petalogix_s3adsp1800.ram", ram_size);
  89     vmstate_register_ram_global(phys_ram);
  90     memory_region_add_subregion(sysmem, ddr_base, phys_ram);
  91
  92     dinfo = drive_get(IF_PFLASH, 0, 0);
  93     pflash_cfi01_register(FLASH_BASEADDR,
  94                           NULL, "petalogix_s3adsp1800.flash", FLASH_SIZE,
  95                           dinfo ? dinfo->bdrv : NULL, (64 * 1024),
  96                           FLASH_SIZE >> 16,
  97                           1, 0x89, 0x18, 0x0000, 0x0, 1);
  98
  99     cpu_irq = microblaze_pic_init_cpu(env);
 100     dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 2);
 101     for (i = 0; i < 32; i++) {
 102         irq[i] = qdev_get_gpio_in(dev, i);
 103     }
 104
 105     sysbus_create_simple("xlnx.xps-uartlite", UARTLITE_BASEADDR, irq[3]);
 106     /* 2 timers at irq 2 @ 62 Mhz.  */
 107     xilinx_timer_create(TIMER_BASEADDR, irq[0], 0, 62 * 1000000);
 108     xilinx_ethlite_create(&nd_table[0], ETHLITE_BASEADDR, irq[1], 0, 0);
 109
 110     microblaze_load_kernel(cpu, ddr_base, ram_size,
 111                     BINARY_DEVICE_TREE_FILE, machine_cpu_reset);
 112 }
 113
 114 static QEMUMachine petalogix_s3adsp1800_machine = {
 115     .name = "petalogix-s3adsp1800",
 116     .desc = "PetaLogix linux refdesign for xilinx Spartan 3ADSP1800",
 117     .init = petalogix_s3adsp1800_init,
 118     .is_default = 1,
 119     DEFAULT_MACHINE_OPTIONS,
 120 };
 121
 122 static void petalogix_s3adsp1800_machine_init(void)
 123 {
 124     qemu_register_machine(&petalogix_s3adsp1800_machine);
 125 }
 126
 127 machine_init(petalogix_s3adsp1800_machine_init);