hw/virtex_ml507.c

   1 /*
   2  * Model of Xilinx Virtex5 ML507 PPC-440 refdesign.
   3  *
   4  * Copyright (c) 2010 Edgar E. Iglesias.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "sysbus.h"
  26 #include "hw.h"
  27 #include "pc.h"
  28 #include "net.h"
  29 #include "flash.h"
  30 #include "sysemu.h"
  31 #include "devices.h"
  32 #include "boards.h"
  33 #include "device_tree.h"
  34 #include "loader.h"
  35 #include "elf.h"
  36 #include "qemu-log.h"
  37 #include "exec-memory.h"
  38
  39 #include "ppc.h"
  40 #include "ppc4xx.h"
  41 #include "ppc440.h"
  42 #include "ppc405.h"
  43
  44 #include "blockdev.h"
  45 #include "xilinx.h"
  46
  47 #define EPAPR_MAGIC    (0x45504150)
  48 #define FLASH_SIZE     (16 * 1024 * 1024)
  49
  50 static struct boot_info
  51 {
  52     uint32_t bootstrap_pc;
  53     uint32_t cmdline;
  54     uint32_t fdt;
  55     uint32_t ima_size;
  56     void *vfdt;
  57 } boot_info;
  58
  59 /* Create reset TLB entries for BookE, spanning the 32bit addr space.  */
  60 static void mmubooke_create_initial_mapping(CPUState *env,
  61                                      target_ulong va,
  62                                      target_phys_addr_t pa)
  63 {
  64     ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];
  65
  66     tlb->attr = 0;
  67     tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
  68     tlb->size = 1 << 31; /* up to 0x80000000  */
  69     tlb->EPN = va & TARGET_PAGE_MASK;
  70     tlb->RPN = pa & TARGET_PAGE_MASK;
  71     tlb->PID = 0;
  72
  73     tlb = &env->tlb.tlbe[1];
  74     tlb->attr = 0;
  75     tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
  76     tlb->size = 1 << 31; /* up to 0xffffffff  */
  77     tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
  78     tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
  79     tlb->PID = 0;
  80 }
  81
  82 static CPUState *ppc440_init_xilinx(ram_addr_t *ram_size,
  83                                     int do_init,
  84                                     const char *cpu_model,
  85                                     uint32_t sysclk)
  86 {
  87     CPUState *env;
  88     qemu_irq *irqs;
  89
  90     env = cpu_init(cpu_model);
  91     if (!env) {
  92         fprintf(stderr, "Unable to initialize CPU!\n");
  93         exit(1);
  94     }
  95
  96     ppc_booke_timers_init(env, sysclk, 0/* no flags */);
  97
  98     ppc_dcr_init(env, NULL, NULL);
  99
 100     /* interrupt controller */
 101     irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
 102     irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
 103     irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
 104     ppcuic_init(env, irqs, 0x0C0, 0, 1);
 105     return env;
 106 }
 107
 108 static void main_cpu_reset(void *opaque)
 109 {
 110     CPUState *env = opaque;
 111     struct boot_info *bi = env->load_info;
 112
 113     cpu_reset(env);
 114     /* Linux Kernel Parameters (passing device tree):
 115        *   r3: pointer to the fdt
 116        *   r4: 0
 117        *   r5: 0
 118        *   r6: epapr magic
 119        *   r7: size of IMA in bytes
 120        *   r8: 0
 121        *   r9: 0
 122     */
 123     env->gpr[1] = (16<<20) - 8;
 124     /* Provide a device-tree.  */
 125     env->gpr[3] = bi->fdt;
 126     env->nip = bi->bootstrap_pc;
 127
 128     /* Create a mapping for the kernel.  */
 129     mmubooke_create_initial_mapping(env, 0, 0);
 130     env->gpr[6] = tswap32(EPAPR_MAGIC);
 131     env->gpr[7] = bi->ima_size;
 132 }
 133
 134 #define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb"
 135 static int xilinx_load_device_tree(target_phys_addr_t addr,
 136                                       uint32_t ramsize,
 137                                       target_phys_addr_t initrd_base,
 138                                       target_phys_addr_t initrd_size,
 139                                       const char *kernel_cmdline)
 140 {
 141     char *path;
 142     int fdt_size;
 143 #ifdef CONFIG_FDT
 144     void *fdt;
 145     int r;
 146
 147     /* Try the local "ppc.dtb" override.  */
 148     fdt = load_device_tree("ppc.dtb", &fdt_size);
 149     if (!fdt) {
 150         path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
 151         if (path) {
 152             fdt = load_device_tree(path, &fdt_size);
 153             g_free(path);
 154         }
 155         if (!fdt) {
 156             return 0;
 157         }
 158     }
 159
 160     r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
 161     if (r < 0)
 162         fprintf(stderr, "couldn't set /chosen/bootargs\n");
 163     cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
 164 #else
 165     /* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
 166        to the kernel.  */
 167     fdt_size = load_image_targphys("ppc.dtb", addr, 0x10000);
 168     if (fdt_size < 0) {
 169         path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
 170         if (path) {
 171             fdt_size = load_image_targphys(path, addr, 0x10000);
 172             g_free(path);
 173         }
 174     }
 175
 176     if (kernel_cmdline) {
 177         fprintf(stderr,
 178                 "Warning: missing libfdt, cannot pass cmdline to kernel!\n");
 179     }
 180 #endif
 181     return fdt_size;
 182 }
 183
 184 static void virtex_init(ram_addr_t ram_size,
 185                         const char *boot_device,
 186                         const char *kernel_filename,
 187                         const char *kernel_cmdline,
 188                         const char *initrd_filename, const char *cpu_model)
 189 {
 190     MemoryRegion *address_space_mem = get_system_memory();
 191     DeviceState *dev;
 192     CPUState *env;
 193     target_phys_addr_t ram_base = 0;
 194     DriveInfo *dinfo;
 195     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
 196     qemu_irq irq[32], *cpu_irq;
 197     int kernel_size;
 198     int i;
 199
 200     /* init CPUs */
 201     if (cpu_model == NULL) {
 202         cpu_model = "440-Xilinx";
 203     }
 204
 205     env = ppc440_init_xilinx(&ram_size, 1, cpu_model, 400000000);
 206     qemu_register_reset(main_cpu_reset, env);
 207
 208     memory_region_init_ram(phys_ram, "ram", 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     pflash_cfi01_register(0xfc000000, NULL, "virtex.flash", FLASH_SIZE,
 214                           dinfo ? dinfo->bdrv : NULL, (64 * 1024),
 215                           FLASH_SIZE >> 16,
 216                           1, 0x89, 0x18, 0x0000, 0x0, 1);
 217
 218     cpu_irq = (qemu_irq *) &env->irq_inputs[PPC40x_INPUT_INT];
 219     dev = xilinx_intc_create(0x81800000, cpu_irq[0], 0);
 220     for (i = 0; i < 32; i++) {
 221         irq[i] = qdev_get_gpio_in(dev, i);
 222     }
 223
 224     serial_mm_init(address_space_mem, 0x83e01003ULL, 2, irq[9], 115200,
 225                    serial_hds[0], DEVICE_LITTLE_ENDIAN);
 226
 227     /* 2 timers at irq 2 @ 62 Mhz.  */
 228     xilinx_timer_create(0x83c00000, irq[3], 2, 62 * 1000000);
 229
 230     if (kernel_filename) {
 231         uint64_t entry, low, high;
 232         target_phys_addr_t boot_offset;
 233
 234         /* Boots a kernel elf binary.  */
 235         kernel_size = load_elf(kernel_filename, NULL, NULL,
 236                                &entry, &low, &high, 1, ELF_MACHINE, 0);
 237         boot_info.bootstrap_pc = entry & 0x00ffffff;
 238
 239         if (kernel_size < 0) {
 240             boot_offset = 0x1200000;
 241             /* If we failed loading ELF's try a raw image.  */
 242             kernel_size = load_image_targphys(kernel_filename,
 243                                               boot_offset,
 244                                               ram_size);
 245             boot_info.bootstrap_pc = boot_offset;
 246             high = boot_info.bootstrap_pc + kernel_size + 8192;
 247         }
 248
 249         boot_info.ima_size = kernel_size;
 250
 251         /* Provide a device-tree.  */
 252         boot_info.fdt = high + (8192 * 2);
 253         boot_info.fdt &= ~8191;
 254         xilinx_load_device_tree(boot_info.fdt, ram_size, 0, 0, kernel_cmdline);
 255     }
 256     env->load_info = &boot_info;
 257 }
 258
 259 static QEMUMachine virtex_machine = {
 260     .name = "virtex-ml507",
 261     .desc = "Xilinx Virtex ML507 reference design",
 262     .init = virtex_init,
 263 };
 264
 265 static void virtex_machine_init(void)
 266 {
 267     qemu_register_machine(&virtex_machine);
 268 }
 269
 270 machine_init(virtex_machine_init);