cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

an5206.c (2836B)

      1/*
      2 * Arnewsh 5206 ColdFire system emulation.
      3 *
      4 * Copyright (c) 2007 CodeSourcery.
      5 *
      6 * This code is licensed under the GPL
      7 */
      8
      9#include "qemu/osdep.h"
     10#include "qapi/error.h"
     11#include "cpu.h"
     12#include "hw/m68k/mcf.h"
     13#include "hw/boards.h"
     14#include "hw/loader.h"
     15#include "elf.h"
     16#include "qemu/error-report.h"
     17#include "sysemu/qtest.h"
     18
     19#define KERNEL_LOAD_ADDR 0x10000
     20#define AN5206_MBAR_ADDR 0x10000000
     21#define AN5206_RAMBAR_ADDR 0x20000000
     22
     23static void mcf5206_init(MemoryRegion *sysmem, uint32_t base)
     24{
     25    DeviceState *dev;
     26    SysBusDevice *s;
     27
     28    dev = qdev_new(TYPE_MCF5206_MBAR);
     29    s = SYS_BUS_DEVICE(dev);
     30    sysbus_realize_and_unref(s, &error_fatal);
     31
     32    memory_region_add_subregion(sysmem, base, sysbus_mmio_get_region(s, 0));
     33}
     34
     35static void an5206_init(MachineState *machine)
     36{
     37    ram_addr_t ram_size = machine->ram_size;
     38    const char *kernel_filename = machine->kernel_filename;
     39    M68kCPU *cpu;
     40    CPUM68KState *env;
     41    int kernel_size;
     42    uint64_t elf_entry;
     43    hwaddr entry;
     44    MemoryRegion *address_space_mem = get_system_memory();
     45    MemoryRegion *sram = g_new(MemoryRegion, 1);
     46
     47    cpu = M68K_CPU(cpu_create(machine->cpu_type));
     48    env = &cpu->env;
     49
     50    /* Initialize CPU registers.  */
     51    env->vbr = 0;
     52    /* TODO: allow changing MBAR and RAMBAR.  */
     53    env->mbar = AN5206_MBAR_ADDR | 1;
     54    env->rambar0 = AN5206_RAMBAR_ADDR | 1;
     55
     56    /* DRAM at address zero */
     57    memory_region_add_subregion(address_space_mem, 0, machine->ram);
     58
     59    /* Internal SRAM.  */
     60    memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal);
     61    memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram);
     62
     63    mcf5206_init(address_space_mem, AN5206_MBAR_ADDR);
     64
     65    /* Load kernel.  */
     66    if (!kernel_filename) {
     67        if (qtest_enabled()) {
     68            return;
     69        }
     70        error_report("Kernel image must be specified");
     71        exit(1);
     72    }
     73
     74    kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry,
     75                           NULL, NULL, NULL, 1, EM_68K, 0, 0);
     76    entry = elf_entry;
     77    if (kernel_size < 0) {
     78        kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL,
     79                                  NULL, NULL);
     80    }
     81    if (kernel_size < 0) {
     82        kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
     83                                          ram_size - KERNEL_LOAD_ADDR);
     84        entry = KERNEL_LOAD_ADDR;
     85    }
     86    if (kernel_size < 0) {
     87        error_report("Could not load kernel '%s'", kernel_filename);
     88        exit(1);
     89    }
     90
     91    env->pc = entry;
     92}
     93
     94static void an5206_machine_init(MachineClass *mc)
     95{
     96    mc->desc = "Arnewsh 5206";
     97    mc->init = an5206_init;
     98    mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206");
     99    mc->default_ram_id = "an5206.ram";
    100}
    101
    102DEFINE_MACHINE("an5206", an5206_machine_init)