Exemplo n.º 1
0
/*
 * ELF-loader for ARM systems.
 *
 * We are currently running out of physical memory, with an ELF file for the
 * kernel and one or more ELF files for the userspace image. (Typically there
 * will only be one userspace ELF file, though if we are running a multi-core
 * CPU, we may have multiple userspace images; one per CPU.) These ELF files
 * are packed into an 'ar' archive.
 *
 * The kernel ELF file indicates what physical address it wants to be loaded
 * at, while userspace images run out of virtual memory, so don't have any
 * requirements about where they are located. We place the kernel at its
 * desired location, and then load userspace images straight after it in
 * physical memory.
 *
 * Several things could possibly go wrong:
 *
 *  1. The physical load address of the kernel might want to overwrite this
 *  ELF-loader;
 *
 *  2. The physical load addresses of the kernel might not actually be in
 *  physical memory;
 *
 *  3. Userspace images may not fit in physical memory, or may try to overlap
 *  the ELF-loader.
 *
 *  We attempt to check for some of these, but some may go unnoticed.
 */
void load_images(struct image_info *kernel_info, struct image_info *user_info,
                 int max_user_images, int *num_images)
{
    int i;
    uint64_t kernel_phys_start, kernel_phys_end;
    paddr_t next_phys_addr;
    const char *elf_filename;
    unsigned long unused;

    /* Load kernel. */
    void *kernel_elf = cpio_get_file(_archive_start, "kernel.elf", &unused);
    if (kernel_elf == NULL) {
        printf("No kernel image present in archive!\n");
        abort();
    }
    if (elf_checkFile(kernel_elf)) {
        printf("Kernel image not a valid ELF file!\n");
        abort();
    }

    elf_getMemoryBounds(kernel_elf, 1, &kernel_phys_start, &kernel_phys_end);
    next_phys_addr = load_elf("kernel", kernel_elf,
                              (paddr_t)kernel_phys_start, kernel_info);

    /*
     * Load userspace images.
     *
     * We assume (and check) that the kernel is the first file in the archive,
     * and then load the (n+1)'th file in the archive onto the (n)'th CPU.
     */
    (void)cpio_get_entry(_archive_start, 0, &elf_filename, &unused);
    if (strcmp(elf_filename, "kernel.elf") != 0) {
        printf("Kernel image not first image in archive.\n");
        abort();
    }
    *num_images = 0;
    for (i = 0; i < max_user_images; i++) {
        /* Fetch info about the next ELF file in the archive. */
        void *user_elf = cpio_get_entry(_archive_start, i + 1,
                                        &elf_filename, &unused);
        if (user_elf == NULL) {
            break;
        }

        /* Load the file into memory. */
        next_phys_addr = load_elf(elf_filename, user_elf,
                                  next_phys_addr, &user_info[*num_images]);
        *num_images = i + 1;
    }
}
Exemplo n.º 2
0
/* Boot PROM (OpenBIOS) */
static void prom_init(hwaddr addr, const char *bios_name)
{
    DeviceState *dev;
    SysBusDevice *s;
    char *filename;
    int ret;

    dev = qdev_create(NULL, "openprom");
    qdev_init_nofail(dev);
    s = SYS_BUS_DEVICE(dev);

    sysbus_mmio_map(s, 0, addr);

    /* load boot prom */
    if (bios_name == NULL) {
        bios_name = PROM_FILENAME;
    }
    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
    if (filename) {
        ret = load_elf(filename, translate_prom_address, &addr,
                       NULL, NULL, NULL, 1, ELF_MACHINE, 0);
        if (ret < 0 || ret > PROM_SIZE_MAX) {
            ret = load_image_targphys(filename, addr, PROM_SIZE_MAX);
        }
        g_free(filename);
    } else {
        ret = -1;
    }
    if (ret < 0 || ret > PROM_SIZE_MAX) {
        fprintf(stderr, "qemu: could not load prom '%s'\n", bios_name);
        exit(1);
    }
}
Exemplo n.º 3
0
int
create_map(int elf_fd, char *out_name)
{
	unsigned long	  elf_size;
	int		  out_fd;
	char		  page[PAGESIZE],
			* elfmag = ELFMAG,
			* elf_image;
	Elf32_Ehdr	* ehdr;
	Elf32_Phdr	* phdr;


	if ((out_fd = open(out_name, O_RDWR|O_CREAT, 0600)) == -1)
		fatal("Couldn't open output file");

	if (read(elf_fd, page, sizeof(page)) != sizeof(page))
		fatal("read of test failed");

	ehdr = (Elf32_Ehdr *)page;
	if (memcmp(ehdr->e_ident, elfmag, SELFMAG))
		return (-1);
	/* We need the program headers to create the memory image */
	phdr = (Elf32_Phdr *)(page + ehdr->e_phoff);

	if ((elf_size = load_elf(elf_fd, ehdr, phdr, &elf_image)) < 0 )
		fatal ("Humungous error loading ELF binary");

	if (dump_it(elf_image, elf_size) < 0)
		fatal("dumping the file failed");

	if (write(out_fd, elf_image, elf_size) != elf_size)
		fatal("didn't work");

	return (0);
}
Exemplo n.º 4
0
Arquivo: mips_r4k.c Projeto: CPFL/gxen
static void load_kernel (CPUState *env)
{
    int64_t entry, kernel_low, kernel_high;
    long kernel_size, initrd_size;
    ram_addr_t initrd_offset;

    kernel_size = load_elf(loaderparams.kernel_filename, VIRT_TO_PHYS_ADDEND,
                           (uint64_t *)&entry, (uint64_t *)&kernel_low,
                           (uint64_t *)&kernel_high);
    if (kernel_size >= 0) {
        if ((entry & ~0x7fffffffULL) == 0x80000000)
            entry = (int32_t)entry;
        env->active_tc.PC = entry;
    } else {
        fprintf(stderr, "qemu: could not load kernel '%s'\n",
                loaderparams.kernel_filename);
        exit(1);
    }

    /* load initrd */
    initrd_size = 0;
    initrd_offset = 0;
    if (loaderparams.initrd_filename) {
        initrd_size = get_image_size (loaderparams.initrd_filename);
        if (initrd_size > 0) {
            initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK;
            if (initrd_offset + initrd_size > ram_size) {
                fprintf(stderr,
                        "qemu: memory too small for initial ram disk '%s'\n",
                        loaderparams.initrd_filename);
                exit(1);
            }
            initrd_size = load_image(loaderparams.initrd_filename,
                                     phys_ram_base + initrd_offset);
        }
        if (initrd_size == (target_ulong) -1) {
            fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
                    loaderparams.initrd_filename);
            exit(1);
        }
    }

    /* Store command line.  */
    if (initrd_size > 0) {
        int ret;
        ret = sprintf((char *)(phys_ram_base + (16 << 20) - 256),
                      "rd_start=0x" TARGET_FMT_lx " rd_size=%li ",
                      PHYS_TO_VIRT((uint32_t)initrd_offset),
                      initrd_size);
        strcpy ((char *)(phys_ram_base + (16 << 20) - 256 + ret),
                loaderparams.kernel_cmdline);
    }
    else {
        strcpy ((char *)(phys_ram_base + (16 << 20) - 256),
                loaderparams.kernel_cmdline);
    }

    *(int32_t *)(phys_ram_base + (16 << 20) - 260) = tswap32 (0x12345678);
    *(int32_t *)(phys_ram_base + (16 << 20) - 264) = tswap32 (ram_size);
}
Exemplo n.º 5
0
static int
loadprog(int *addrp, struct prog *p)
{
#if	DEBUG
	if (debug)
		printf("loadprog(%s)\n", p->name);
#endif	
	if (openrd(p->name, &p->basename)) {
		printf("Can't find %s\n", p->name);
		usage();
		return 1;
	}
	printf("Loading %cd(%d,%c)%s\n", 
	       dev, unit, 'a'+ part, p->basename);
	if (load_elf(p->name, addrp, regions)) {
		return 1;
	}
	p->sym_start = sym_start;
	p->sym_size = *addrp - sym_start;

	p->args_start = *addrp;
	pcpy(p->args, (void *) p->args_start, p->args_size);
	*addrp = align((*addrp) + p->args_size);
	return 0;
}
Exemplo n.º 6
0
Arquivo: an5206.c Projeto: 3a9LL/panda
static void an5206_init(ram_addr_t ram_size,
                     const char *boot_device,
                     const char *kernel_filename, const char *kernel_cmdline,
                     const char *initrd_filename, const char *cpu_model)
{
    CPUState *env;
    int kernel_size;
    uint64_t elf_entry;
    target_phys_addr_t entry;
    MemoryRegion *address_space_mem = get_system_memory();
    MemoryRegion *ram = g_new(MemoryRegion, 1);
    MemoryRegion *sram = g_new(MemoryRegion, 1);

    if (!cpu_model)
        cpu_model = "m5206";
    env = cpu_init(cpu_model);
    if (!env) {
        hw_error("Unable to find m68k CPU definition\n");
    }

    /* Initialize CPU registers.  */
    env->vbr = 0;
    /* TODO: allow changing MBAR and RAMBAR.  */
    env->mbar = AN5206_MBAR_ADDR | 1;
    env->rambar0 = AN5206_RAMBAR_ADDR | 1;

    /* DRAM at address zero */
    memory_region_init_ram(ram, NULL, "an5206.ram", ram_size);
    memory_region_add_subregion(address_space_mem, 0, ram);

    /* Internal SRAM.  */
    memory_region_init_ram(sram, NULL, "an5206.sram", 512);
    memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram);

    mcf5206_init(AN5206_MBAR_ADDR, env);

    /* Load kernel.  */
    if (!kernel_filename) {
        fprintf(stderr, "Kernel image must be specified\n");
        exit(1);
    }

    kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
                           NULL, NULL, 1, ELF_MACHINE, 0);
    entry = elf_entry;
    if (kernel_size < 0) {
        kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
    }
    if (kernel_size < 0) {
        kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
                                          ram_size - KERNEL_LOAD_ADDR);
        entry = KERNEL_LOAD_ADDR;
    }
    if (kernel_size < 0) {
        fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
        exit(1);
    }

    env->pc = entry;
}
Exemplo n.º 7
0
static void cpu_openrisc_load_kernel(ram_addr_t ram_size,
                                     const char *kernel_filename,
                                     OpenRISCCPU *cpu)
{
    long kernel_size;
    uint64_t elf_entry;
    hwaddr entry;

    if (kernel_filename && !qtest_enabled()) {
        kernel_size = load_elf(kernel_filename, NULL, NULL,
                               &elf_entry, NULL, NULL, 1, ELF_MACHINE, 1);
        entry = elf_entry;
        if (kernel_size < 0) {
            kernel_size = load_uimage(kernel_filename,
                                      &entry, NULL, NULL);
        }
        if (kernel_size < 0) {
            kernel_size = load_image_targphys(kernel_filename,
                                              KERNEL_LOAD_ADDR,
                                              ram_size - KERNEL_LOAD_ADDR);
            entry = KERNEL_LOAD_ADDR;
        }

        if (kernel_size < 0) {
            qemu_log("QEMU: couldn't load the kernel '%s'\n",
                    kernel_filename);
            exit(1);
        }
    }

    cpu->env.pc = entry;
}
Exemplo n.º 8
0
static void openrisc_load_kernel(ram_addr_t ram_size,
                                 const char *kernel_filename)
{
    long kernel_size;
    uint64_t elf_entry;
    hwaddr entry;

    if (kernel_filename && !qtest_enabled()) {
        kernel_size = load_elf(kernel_filename, NULL, NULL,
                               &elf_entry, NULL, NULL, 1, EM_OPENRISC,
                               1, 0);
        entry = elf_entry;
        if (kernel_size < 0) {
            kernel_size = load_uimage(kernel_filename,
                                      &entry, NULL, NULL, NULL, NULL);
        }
        if (kernel_size < 0) {
            kernel_size = load_image_targphys(kernel_filename,
                                              KERNEL_LOAD_ADDR,
                                              ram_size - KERNEL_LOAD_ADDR);
        }

        if (entry <= 0) {
            entry = KERNEL_LOAD_ADDR;
        }

        if (kernel_size < 0) {
            error_report("couldn't load the kernel '%s'", kernel_filename);
            exit(1);
        }
        boot_info.bootstrap_pc = entry;
    }
}
Exemplo n.º 9
0
void cris_load_image(CRISCPU *cpu, struct cris_load_info *li)
{
    CPUCRISState *env = &cpu->env;
    uint64_t entry, high;
    int kcmdline_len;
    int image_size;

    env->load_info = li;
    /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis 
       devboard SDK.  */
    image_size = load_elf(li->image_filename, translate_kernel_address, NULL,
                          &entry, NULL, &high, 0, ELF_MACHINE, 0);
    li->entry = entry;
    if (image_size < 0) {
        /* Takes a kimage from the axis devboard SDK.  */
        image_size = load_image_targphys(li->image_filename, 0x40004000,
                                         ram_size);
        li->entry = 0x40004000;
    }

    if (image_size < 0) {
        fprintf(stderr, "qemu: could not load kernel '%s'\n",
                li->image_filename);
        exit(1);
    }

    if (li->cmdline && (kcmdline_len = strlen(li->cmdline))) {
        if (kcmdline_len > 256) {
            fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
            exit(1);
        }
        pstrcpy_targphys("cmdline", 0x40000000, 256, li->cmdline);
    }
    qemu_register_reset(main_cpu_reset, cpu);
}
Exemplo n.º 10
0
void load_ramdisk_app(uint32_t appIdx)
{
	/* 
	 * ramdisk.img is already loaded to 0x3000000 by the bootloader.
	 * load_ramdisk_img create ramdisk file system.
	 */
	char *app_load_addr;
	char temp[16];
	struct file *fp;

	if (appIdx >= MAX_USR_TASK) {
		xil_printf("err: user task idx overflow\n");
		return;
	}


	app_load_addr = (char *)(USER_APP_BASE + 
			APP_LOAD_OFFSET + 
			USER_APP_GAP * appIdx);

	sprintf(temp,"App_%u", (unsigned int)appIdx);
	fp = find_file_by_name(temp);
	if (fp) {
		read(fp, fp->fsz, app_load_addr);
		load_elf(app_load_addr, appIdx);
	}
}
Exemplo n.º 11
0
void *
mc_dlopen(const char *path)
{
	struct ext_host *host;

	if ((host = mc_calloc(1, sizeof(struct ext_host))) == NULL) {
		errno = ENOMEM;
		return NULL;
	}
#if XIP && !XS_ARCHIVE
	/* first look up the linked list */
	if ((host->ext = mc_lookup_module(path)) != NULL)
		return host;
#endif
	if (load_elf(path, &host->base, &host->ext) != 0) {
		mc_free(host);
		return NULL;
	}
#if MC_NUM_XREF > 0
	if (host->ext->xrefs != NULL) {
		int i;
		struct mc_extension *ext = host->ext;
		for (i = 0; i < ext->num_xrefs; i++) {
			struct mc_xref *xref = &ext->xrefs[i];
			xref_stubs[xref->fnum] = xref->fp;
		}
	}
#endif
	return host;
}
Exemplo n.º 12
0
static unsigned long sun4u_load_kernel(const char *kernel_filename,
                                       const char *initrd_filename,
                                       ram_addr_t RAM_size, long *initrd_size)
{
    int linux_boot;
    unsigned int i;
    long kernel_size;

    linux_boot = (kernel_filename != NULL);

    kernel_size = 0;
    if (linux_boot) {
        int bswap_needed;

#ifdef BSWAP_NEEDED
        bswap_needed = 1;
#else
        bswap_needed = 0;
#endif
        kernel_size = load_elf(kernel_filename, 0, NULL, NULL, NULL,
                               1, ELF_MACHINE, 0);
        if (kernel_size < 0)
            kernel_size = load_aout(kernel_filename, KERNEL_LOAD_ADDR,
                                    RAM_size - KERNEL_LOAD_ADDR, bswap_needed,
                                    TARGET_PAGE_SIZE);
        if (kernel_size < 0)
            kernel_size = load_image_targphys(kernel_filename,
                                              KERNEL_LOAD_ADDR,
                                              RAM_size - KERNEL_LOAD_ADDR);
        if (kernel_size < 0) {
            fprintf(stderr, "qemu: could not load kernel '%s'\n",
                    kernel_filename);
            exit(1);
        }

        /* load initrd */
        *initrd_size = 0;
        if (initrd_filename) {
            *initrd_size = load_image_targphys(initrd_filename,
                                               INITRD_LOAD_ADDR,
                                               RAM_size - INITRD_LOAD_ADDR);
            if (*initrd_size < 0) {
                fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
                        initrd_filename);
                exit(1);
            }
        }
        if (*initrd_size > 0) {
            for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
                if (ldl_phys(KERNEL_LOAD_ADDR + i) == 0x48647253) { // HdrS
                    stl_phys(KERNEL_LOAD_ADDR + i + 16, INITRD_LOAD_ADDR);
                    stl_phys(KERNEL_LOAD_ADDR + i + 20, *initrd_size);
                    break;
                }
            }
        }
    }
    return kernel_size;
}
Exemplo n.º 13
0
//
// Creates a new env running a specific binary.
// The new env's parent ID is set to 0.
// The implementation is a simple wrapper around env_alloc and load_elf.
//
void
env_create(uint8_t *binary, size_t size)
{
    struct Env *e;
    if(env_alloc(&e, 0))
        panic("env_create: Environment allocation failed");
    load_elf(e, binary, size);
}
Exemplo n.º 14
0
static void dump_elf(const char *memblock)
{
    struct elf_t *elf = load_elf(memblock);

    elf_dynamic(elf, &need, &provide);
    if (ids)
        elf_build_id(elf, &build_id);
}
Exemplo n.º 15
0
Arquivo: exec.c Projeto: jmgc/noah
int
do_exec(const char *elf_path, int argc, char *argv[], char **envp)
{
  int err;
  int fd;
  struct stat st;
  char *data;
  
  if ((err = do_access(elf_path, X_OK)) < 0) {
    return err;
  }
  if ((fd = vkern_open(elf_path, LINUX_O_RDONLY, 0)) < 0) {
    return fd;
  }
  if (proc.nr_tasks > 1) {
    warnk("Multi-thread execve is not implemented yet\n");
    return -LINUX_EINVAL;
  }

  /* Now do exec */
  fstat(fd, &st);
  if (!S_ISREG(st.st_mode)) {
    vkern_close(fd);
    return -LINUX_EACCES;
  }

  prepare_newproc();

  data = mmap(0, st.st_size, PROT_READ | PROT_EXEC, MAP_PRIVATE, fd, 0);

  vkern_close(fd);

  drop_privilege();

  if (4 <= st.st_size && memcmp(data, ELFMAG, 4) == 0) {
    if ((err = load_elf((Elf64_Ehdr *) data, argc, argv, envp)) < 0)
      return err;
    if (st.st_mode & 04000) {
      elevate_privilege();
    }
  }
  else if (2 <= st.st_size && data[0] == '#' && data[1] == '!') {
    if ((err = load_script(data, st.st_size, elf_path, argc, argv, envp)) < 0)
      return err;
  }
  /*else if (4 <= st.st_size && memcmp(data, "\xcf\xfa\xed\xfe", 4) == 0) {
    // Mach-O
    return syswrap(execve(elf_path, argv, envp));
  }*/
  else {
    return -LINUX_ENOEXEC;                  /* unsupported file type */
  }

  munmap(data, st.st_size);
  proc.mm->current_brk = proc.mm->start_brk;

  return 0;
}
Exemplo n.º 16
0
int
runprogram(char *progname)
{
	struct addrspace *as;
	struct vnode *v;
	vaddr_t entrypoint, stackptr;
	int result;

	/* Open the file. */
	result = vfs_open(progname, O_RDONLY, 0, &v);
	if (result) {
		return result;
	}

	/* We should be a new process. */
	KASSERT(curproc_getas() == NULL);

	/* Create a new address space. */
	#if OPT_A3
	as = as_create(progname);
	#else
	as = as_create();
	#endif
	if (as ==NULL) {
		vfs_close(v);
		return ENOMEM;
	}

	/* Switch to it and activate it. */
	curproc_setas(as);
	as_activate();

	/* Load the executable. */
	result = load_elf(v, &entrypoint);
	if (result) {
		/* p_addrspace will go away when curproc is destroyed */
		vfs_close(v);
		return result;
	}

	/* Done with the file now. */
	vfs_close(v);

	/* Define the user stack in the address space */
	result = as_define_stack(as, &stackptr);
	if (result) {
		/* p_addrspace will go away when curproc is destroyed */
		return result;
	}

	/* Warp to user mode. */
	enter_new_process(0 /*argc*/, NULL /*userspace addr of argv*/,
			  stackptr, entrypoint);
	
	/* enter_new_process does not return. */
	panic("enter_new_process returned\n");
	return EINVAL;
}
Exemplo n.º 17
0
/*
 * Load program "progname" and start running it in usermode.
 * Does not return except on error.
 *
 * Calls vfs_open on progname and thus may destroy it.
 */
int
runprogram(char *progname)
{
	struct vnode *v;
	vaddr_t entrypoint, stackptr;
	int result;

	/* Open the file. */
	result = vfs_open(progname, O_RDONLY, 0, &v);
	if (result) {
		return result;
	}

	/* We should be a new thread. */
	KASSERT(curthread->t_addrspace == NULL);

	/* Create a new address space. */
	curthread->t_addrspace = as_create();
	if (curthread->t_addrspace==NULL) {
		vfs_close(v);
		return ENOMEM;
	}
	curthread->t_filetable = filetable_create();
	if(curthread->t_filetable == NULL){
		return ENOMEM;
	}

	/* Activate it. */
	as_activate(curthread->t_addrspace);

	/* Load the executable. */
	result = load_elf(v, &entrypoint);
	if (result) {
		/* thread_exit destroys curthread->t_addrspace */
		vfs_close(v);
		return result;
	}

	/* Done with the file now. */
	vfs_close(v);

	/* Define the user stack in the address space */
	result = as_define_stack(curthread->t_addrspace, &stackptr);
	if (result) {
		/* thread_exit destroys curthread->t_addrspace */
		return result;
	}

	/* Warp to user mode. */
	enter_new_process(0 /*argc*/, NULL /*userspace addr of argv*/,
			  stackptr, entrypoint);
	
	/* enter_new_process does not return. */
	panic("enter_new_process returned\n");
	return EINVAL;
}
Exemplo n.º 18
0
Arquivo: main.c Projeto: Nukem9/Dune
int boxer_main(int argc, char *argv[])
{
	int ret;
	uintptr_t sp;
	struct elf_data data;

	if (argc < 2)
		return -EINVAL;

	/* XXX needed.  Probably does some libc stuff */
	printf(" \b"); 

//	printf("%s\n", environ[0]);

	ret = dune_init(0);
	if (ret) {
		printf("sandbox: failed to initialize Dune\n");
		return ret;
	}

	ret = dune_enter();
	if (ret) {
		printf("sandbox: failed to enter Dune mode\n");
		return ret;
	}

	ret = load_elf(argv[1], &data);
	if (ret)
		return ret;

//	printf("sandbox: entry addr is %lx\n", data.entry);

	dune_set_user_fs(0); // default starting fs

	ret = trap_init();
	if (ret) {
		printf("failed to initialize trap handlers\n");
		return ret;
	}

	ret = umm_alloc_stack(&sp);
	if (ret) {
		printf("failed to alloc stack\n");
		return ret;
	}

	sp = setup_arguments(sp, argv[1], &argv[2], environ, data);
	if (!sp) {
		printf("failed to setup arguments\n");
		return -EINVAL;
	}

	ret = run_app(sp, data.entry);

	return ret;
}
Exemplo n.º 19
0
static void an5206_init(ram_addr_t ram_size,
                     const char *boot_device,
                     const char *kernel_filename, const char *kernel_cmdline,
                     const char *initrd_filename, const char *cpu_model)
{
    CPUState *env;
    int kernel_size;
    uint64_t elf_entry;
    target_ulong entry;

    if (!cpu_model)
        cpu_model = "m5206";
    env = cpu_init(cpu_model);
    if (!env) {
        hw_error("Unable to find m68k CPU definition\n");
    }

    /* Initialize CPU registers.  */
    env->vbr = 0;
    /* TODO: allow changing MBAR and RAMBAR.  */
    env->mbar = AN5206_MBAR_ADDR | 1;
    env->rambar0 = AN5206_RAMBAR_ADDR | 1;

    /* DRAM at address zero */
    cpu_register_physical_memory(0, ram_size,
        qemu_ram_alloc(ram_size) | IO_MEM_RAM);

    /* Internal SRAM.  */
    cpu_register_physical_memory(AN5206_RAMBAR_ADDR, 512,
        qemu_ram_alloc(512) | IO_MEM_RAM);

    mcf5206_init(AN5206_MBAR_ADDR, env);

    /* Load kernel.  */
    if (!kernel_filename) {
        fprintf(stderr, "Kernel image must be specified\n");
        exit(1);
    }

    kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL);
    entry = elf_entry;
    if (kernel_size < 0) {
        kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
    }
    if (kernel_size < 0) {
        kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
                                          ram_size - KERNEL_LOAD_ADDR);
        entry = KERNEL_LOAD_ADDR;
    }
    if (kernel_size < 0) {
        fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
        exit(1);
    }

    env->pc = entry;
}
Exemplo n.º 20
0
void boot_loader()
{
  // load program named "boot"
  long phdrs[128];
  current.phdr = (uintptr_t)phdrs;
  current.phdr_size = sizeof(phdrs);
  load_elf("vmlinux", &current);

  run_loaded_program();
}
Exemplo n.º 21
0
static void dummy_ppc_init(ram_addr_t ram_size, int vga_ram_size,
                     const char *boot_device, DisplayState *ds,
                     const char *kernel_filename, const char *kernel_cmdline,
                     const char *initrd_filename, const char *cpu_model)
{
    CPUState *env;
    int kernel_size;
    uint64_t elf_entry;
    target_ulong entry;

    if (!cpu_model)
        cpu_model = "default";
    env = cpu_init(cpu_model);
    if (!env) {
        fprintf(stderr, "Unable to find ppc CPU definition\n");
        exit(1);
    }

    cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
    /* RAM at address zero */
    cpu_register_physical_memory(0x10000000, ram_size,
        qemu_ram_alloc(ram_size) | IO_MEM_RAM);

    /* Load kernel.  */
    if (kernel_filename) {
        kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL);
        entry = elf_entry;
        if (kernel_size < 0) {
            kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
        }
        if (kernel_size < 0) {
            kernel_size = load_image(kernel_filename, phys_ram_base);
            entry = 0;
        }
        if (kernel_size < 0) {
            fprintf(stderr, "qemu: could not load kernel '%s'\n",
                    kernel_filename);
            exit(1);
        }
    } else {
        entry = 0;
    }
    env->nip = entry;
    if (semihosting_enabled) {
        /* Setup initial stack.  */
        target_ulong *p;
        p = (target_ulong *)(phys_ram_base + ram_size);
        *(--p) = 0;
        *(--p) = 0;
        env->gpr[1] = 0x10000000 + ram_size - 2 * sizeof(target_ulong);
        /* Enable FPU.  */
        env->msr |= (1 << MSR_FP);
    }
}
Exemplo n.º 22
0
/*
 * Load program "progname" and start running it in usermode.
 * Does not return except on error.
 *
 * Calls vfs_open on progname and thus may destroy it.
 */
int
runprogram(char *progname)
{
	struct vnode *v;
	vaddr_t entrypoint, stackptr;
	int result;

	/* Open the file. */
	result = vfs_open(progname, O_RDONLY, &v);
	if (result) {
		return result;
	}

	/* We should be a new thread. */
	assert(curthread->t_vmspace == NULL);

	/* Create a new address space. */
	curthread->t_vmspace = as_create();
	if (curthread->t_vmspace==NULL) {
		vfs_close(v);
		return ENOMEM;
	}

	//kprintf("\n in runprogram");
	assignPid();
	/* Activate it. */
	as_activate(curthread->t_vmspace);

	/* Load the executable. */
	result = load_elf(v, &entrypoint);
	if (result) {
		/* thread_exit destroys curthread->t_vmspace */
		vfs_close(v);
		return result;
	}

	/* Done with the file now. */
	vfs_close(v);

	/* Define the user stack in the address space */
	result = as_define_stack(curthread->t_vmspace, &stackptr);
	if (result) {
		/* thread_exit destroys curthread->t_vmspace */
		return result;
	}

	/* Warp to user mode. */
	md_usermode(0 /*argc*/, NULL /*userspace addr of argv*/,
		    stackptr, entrypoint);
	
	/* md_usermode does not return */
	panic("md_usermode returned\n");
	return EINVAL;
}
Exemplo n.º 23
0
void boot_loader()
{
  // load program named "boot"
  long phdrs[128];
  current.phdr = (uintptr_t)phdrs;
  current.phdr_size = sizeof(phdrs);
  uart_send_string("Loadng linux ELF\n");
  load_elf("vmlinux", &current);

  uart_send_string("Linux ELF loaded\n");
  run_loaded_program();
}
Exemplo n.º 24
0
static void dummy_m68k_init(QEMUMachineInitArgs *args)
{
    ram_addr_t ram_size = args->ram_size;
    const char *cpu_model = args->cpu_model;
    const char *kernel_filename = args->kernel_filename;
    CPUM68KState *env;
    MemoryRegion *address_space_mem =  get_system_memory();
    MemoryRegion *ram = g_new(MemoryRegion, 1);
    int kernel_size;
    uint64_t elf_entry;
    hwaddr entry;

    if (!cpu_model)
        cpu_model = "cfv4e";
    env = cpu_init(cpu_model);
    if (!env) {
        fprintf(stderr, "Unable to find m68k CPU definition\n");
        exit(1);
    }

    /* Initialize CPU registers.  */
    env->vbr = 0;

    /* RAM at address zero */
    memory_region_init_ram(ram, "dummy_m68k.ram", ram_size);
    vmstate_register_ram_global(ram);
    memory_region_add_subregion(address_space_mem, 0, ram);

    /* Load kernel.  */
    if (kernel_filename) {
        kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
                               NULL, NULL, 1, ELF_MACHINE, 0);
        entry = elf_entry;
        if (kernel_size < 0) {
            kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
        }
        if (kernel_size < 0) {
            kernel_size = load_image_targphys(kernel_filename,
                                              KERNEL_LOAD_ADDR,
                                              ram_size - KERNEL_LOAD_ADDR);
            entry = KERNEL_LOAD_ADDR;
        }
        if (kernel_size < 0) {
            fprintf(stderr, "qemu: could not load kernel '%s'\n",
                    kernel_filename);
            exit(1);
        }
    } else {
        entry = 0;
    }
    env->pc = entry;
}
Exemplo n.º 25
0
Task* Core::load_executable(unsigned int start, unsigned int size, char* command_line)
{
unsigned char* file = (unsigned char*) start;
if(file[0] == 0x7f && file[1] == 'E' && file[2] == 'L' && file[3] == 'F')
 return load_elf(start, size);
else if(file[0] == 'M' && file[1] == 'Z')
 {
 printf("\nload_executable: PE not supported\n");
 return NULL;
 }
printf("\nload_executable: wrong file format\n");
return NULL;
}
Exemplo n.º 26
0
static int64_t load_kernel(void)
{
    int64_t entry, kernel_high;
    long kernel_size;
    long initrd_size;
    ram_addr_t initrd_offset;
    int big_endian;

#ifdef TARGET_WORDS_BIGENDIAN
    big_endian = 1;
#else
    big_endian = 0;
#endif

    kernel_size = load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys,
                           NULL, (uint64_t *)&entry, NULL,
                           (uint64_t *)&kernel_high, big_endian,
                           ELF_MACHINE, 1);
    if (kernel_size >= 0) {
        if ((entry & ~0x7fffffffULL) == 0x80000000)
            entry = (int32_t)entry;
    } else {
        fprintf(stderr, "qemu: could not load kernel '%s'\n",
                loaderparams.kernel_filename);
        exit(1);
    }

    /* load initrd */
    initrd_size = 0;
    initrd_offset = 0;
    if (loaderparams.initrd_filename) {
        initrd_size = get_image_size (loaderparams.initrd_filename);
        if (initrd_size > 0) {
            initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK;
            if (initrd_offset + initrd_size > loaderparams.ram_size) {
                fprintf(stderr,
                        "qemu: memory too small for initial ram disk '%s'\n",
                        loaderparams.initrd_filename);
                exit(1);
            }
            initrd_size = load_image_targphys(loaderparams.initrd_filename,
                initrd_offset, loaderparams.ram_size - initrd_offset);
        }
        if (initrd_size == (target_ulong) -1) {
            fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
                    loaderparams.initrd_filename);
            exit(1);
        }
    }
    return entry;
}
Exemplo n.º 27
0
static void dummy_m68k_init(ram_addr_t ram_size,
                     const char *boot_device,
                     const char *kernel_filename, const char *kernel_cmdline,
                     const char *initrd_filename, const char *cpu_model)
{
    CPUState *env;
    int kernel_size;
    uint64_t elf_entry;
    target_phys_addr_t entry;

    if (!cpu_model)
        cpu_model = "cfv4e";
    env = cpu_init(cpu_model);
    if (!env) {
        fprintf(stderr, "Unable to find m68k CPU definition\n");
        exit(1);
    }

    /* Initialize CPU registers.  */
    env->vbr = 0;

    /* RAM at address zero */
    cpu_register_physical_memory(0, ram_size,
        qemu_ram_alloc(ram_size) | IO_MEM_RAM);

    /* Load kernel.  */
    if (kernel_filename) {
        kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
                               NULL, NULL, 1, ELF_MACHINE, 0);
        entry = elf_entry;
        if (kernel_size < 0) {
            kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
        }
        if (kernel_size < 0) {
            kernel_size = load_image_targphys(kernel_filename,
                                              KERNEL_LOAD_ADDR,
                                              ram_size - KERNEL_LOAD_ADDR);
            entry = KERNEL_LOAD_ADDR;
        }
        if (kernel_size < 0) {
            fprintf(stderr, "qemu: could not load kernel '%s'\n",
                    kernel_filename);
            exit(1);
        }
    } else {
        entry = 0;
    }
    env->pc = entry;
}
Exemplo n.º 28
0
static int64_t load_kernel(void)
{
    int64_t kernel_entry, kernel_high;
    int big_endian;
    big_endian = 0;

    if (load_elf(loaderparams.kernel_filename, identity_translate, NULL,
                 (uint64_t *)&kernel_entry, NULL, (uint64_t *)&kernel_high,
                 big_endian, ELF_MACHINE, 1, 0) < 0) {
        fprintf(stderr, "qemu: could not load kernel '%s'\n",
                loaderparams.kernel_filename);
        exit(1);
    }
    return kernel_entry;
}
Exemplo n.º 29
0
static void rest_of_boot_loader(uintptr_t kstack_top)
{
  arg_buf args;
  size_t argc = parse_args(&args);
  if (!argc)
    panic("tell me what ELF to load!");

  // load program named by argv[0]
  long phdrs[128];
  current.phdr = (uintptr_t)phdrs;
  current.phdr_size = sizeof(phdrs);
  load_elf(args.argv[0], &current);

  run_loaded_program(argc, args.argv, kstack_top);
}
Exemplo n.º 30
-4
static void xtensa_sim_init(MachineState *machine)
{
    XtensaCPU *cpu = NULL;
    CPUXtensaState *env = NULL;
    MemoryRegion *ram, *rom;
    ram_addr_t ram_size = machine->ram_size;
    const char *cpu_model = machine->cpu_model;
    const char *kernel_filename = machine->kernel_filename;
    int n;

    if (!cpu_model) {
        cpu_model = XTENSA_DEFAULT_CPU_MODEL;
    }

    for (n = 0; n < smp_cpus; n++) {
        cpu = cpu_xtensa_init(cpu_model);
        if (cpu == NULL) {
            error_report("unable to find CPU definition '%s'",
                         cpu_model);
            exit(EXIT_FAILURE);
        }
        env = &cpu->env;

        env->sregs[PRID] = n;
        qemu_register_reset(sim_reset, cpu);
        /* Need MMU initialized prior to ELF loading,
         * so that ELF gets loaded into virtual addresses
         */
        sim_reset(cpu);
    }

    ram = g_malloc(sizeof(*ram));
    memory_region_init_ram(ram, NULL, "xtensa.sram", ram_size, &error_fatal);
    vmstate_register_ram_global(ram);
    memory_region_add_subregion(get_system_memory(), 0, ram);

    rom = g_malloc(sizeof(*rom));
    memory_region_init_ram(rom, NULL, "xtensa.rom", 0x1000, &error_fatal);
    vmstate_register_ram_global(rom);
    memory_region_add_subregion(get_system_memory(), 0xfe000000, rom);

    if (kernel_filename) {
        uint64_t elf_entry;
        uint64_t elf_lowaddr;
#ifdef TARGET_WORDS_BIGENDIAN
        int success = load_elf(kernel_filename, translate_phys_addr, cpu,
                &elf_entry, &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
#else
        int success = load_elf(kernel_filename, translate_phys_addr, cpu,
                &elf_entry, &elf_lowaddr, NULL, 0, ELF_MACHINE, 0);
#endif
        if (success > 0) {
            env->pc = elf_entry;
        }
    }
}