hw/petalogix_ml605_mmu.c

   1 /*
   2  * Model of Petalogix linux reference design targeting Xilinx Spartan ml605
   3  * board.
   4  *
   5  * Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
   6  * Copyright (c) 2011 PetaLogix
   7  * Copyright (c) 2009 Edgar E. Iglesias.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25  * THE SOFTWARE.
  26  */
  27
  28 #include "sysbus.h"
  29 #include "hw.h"
  30 #include "net.h"
  31 #include "flash.h"
  32 #include "sysemu.h"
  33 #include "devices.h"
  34 #include "boards.h"
  35 #include "xilinx.h"
  36 #include "blockdev.h"
  37 #include "pc.h"
  38 #include "exec-memory.h"
  39
  40 #include "microblaze_boot.h"
  41 #include "microblaze_pic_cpu.h"
  42 #include "xilinx_axidma.h"
  43
  44 #define LMB_BRAM_SIZE  (128 * 1024)
  45 #define FLASH_SIZE     (32 * 1024 * 1024)
  46
  47 #define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"
  48
  49 #define MEMORY_BASEADDR 0x50000000
  50 #define FLASH_BASEADDR 0x86000000
  51 #define INTC_BASEADDR 0x81800000
  52 #define TIMER_BASEADDR 0x83c00000
  53 #define UART16550_BASEADDR 0x83e00000
  54 #define AXIENET_BASEADDR 0x82780000
  55 #define AXIDMA_BASEADDR 0x84600000
  56
  57 static void machine_cpu_reset(MicroBlazeCPU *cpu)
  58 {
  59     CPUMBState *env = &cpu->env;
  60
  61     env->pvr.regs[10] = 0x0e000000; /* virtex 6 */
  62     /* setup pvr to match kernel setting */
  63     env->pvr.regs[5] |= PVR5_DCACHE_WRITEBACK_MASK;
  64     env->pvr.regs[0] |= PVR0_USE_FPU_MASK | PVR0_ENDI;
  65     env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8);
  66     env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK;
  67     env->pvr.regs[4] = 0xc56b8000;
  68     env->pvr.regs[5] = 0xc56be000;
  69 }
  70
  71 static void
  72 petalogix_ml605_init(ram_addr_t ram_size,
  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     MemoryRegion *address_space_mem = get_system_memory();
  79     DeviceState *dev;
  80     MicroBlazeCPU *cpu;
  81     CPUMBState *env;
  82     DriveInfo *dinfo;
  83     int i;
  84     target_phys_addr_t ddr_base = MEMORY_BASEADDR;
  85     MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
  86     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
  87     qemu_irq irq[32], *cpu_irq;
  88
  89     /* init CPUs */
  90     if (cpu_model == NULL) {
  91         cpu_model = "microblaze";
  92     }
  93     cpu = cpu_mb_init(cpu_model);
  94     env = &cpu->env;
  95
  96     /* Attach emulated BRAM through the LMB.  */
  97     memory_region_init_ram(phys_lmb_bram, "petalogix_ml605.lmb_bram",
  98                            LMB_BRAM_SIZE);
  99     vmstate_register_ram_global(phys_lmb_bram);
 100     memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);
 101
 102     memory_region_init_ram(phys_ram, "petalogix_ml605.ram", ram_size);
 103     vmstate_register_ram_global(phys_ram);
 104     memory_region_add_subregion(address_space_mem, ddr_base, phys_ram);
 105
 106     dinfo = drive_get(IF_PFLASH, 0, 0);
 107     /* 5th parameter 2 means bank-width
 108      * 10th paremeter 0 means little-endian */
 109     pflash_cfi01_register(FLASH_BASEADDR,
 110                           NULL, "petalogix_ml605.flash", FLASH_SIZE,
 111                           dinfo ? dinfo->bdrv : NULL, (64 * 1024),
 112                           FLASH_SIZE >> 16,
 113                           2, 0x89, 0x18, 0x0000, 0x0, 0);
 114
 115
 116     cpu_irq = microblaze_pic_init_cpu(env);
 117     dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 4);
 118     for (i = 0; i < 32; i++) {
 119         irq[i] = qdev_get_gpio_in(dev, i);
 120     }
 121
 122     serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,
 123                    irq[5], 115200, serial_hds[0], DEVICE_LITTLE_ENDIAN);
 124
 125     /* 2 timers at irq 2 @ 100 Mhz.  */
 126     xilinx_timer_create(TIMER_BASEADDR, irq[2], 0, 100 * 1000000);
 127
 128     /* axi ethernet and dma initialization. TODO: Dynamically connect them.  */
 129     {
 130         static struct XilinxDMAConnection dmach;
 131
 132         xilinx_axiethernet_create(&dmach, &nd_table[0], 0x82780000,
 133                                   irq[3], 0x1000, 0x1000);
 134         xilinx_axiethernetdma_create(&dmach, 0x84600000,
 135                                      irq[1], irq[0], 100 * 1000000);
 136     }
 137
 138     microblaze_load_kernel(cpu, ddr_base, ram_size, BINARY_DEVICE_TREE_FILE,
 139                                                             machine_cpu_reset);
 140
 141 }
 142
 143 static QEMUMachine petalogix_ml605_machine = {
 144     .name = "petalogix-ml605",
 145     .desc = "PetaLogix linux refdesign for xilinx ml605 little endian",
 146     .init = petalogix_ml605_init,
 147     .is_default = 0
 148 };
 149
 150 static void petalogix_ml605_machine_init(void)
 151 {
 152     qemu_register_machine(&petalogix_ml605_machine);
 153 }
 154
 155 machine_init(petalogix_ml605_machine_init);