int kernel_size;
int initrd_size;
int n;
- uint64_t entry;
+ int is_linux = 0;
+ uint64_t elf_entry;
+ target_ulong entry;
/* Load the kernel. */
if (!kernel_filename) {
exit(1);
}
- kernel_size = load_elf(kernel_filename, 0, &entry);
- if (kernel_size >= 0) {
- /* An ELF image. Jump to the entry point. */
+ /* Assume that raw images are linux kernels, and ELF images are not. */
+ kernel_size = load_elf(kernel_filename, 0, &elf_entry);
+ entry = elf_entry;
+ if (kernel_size < 0) {
+ kernel_size = load_uboot(kernel_filename, &entry, &is_linux);
+ }
+ if (kernel_size < 0) {
+ kernel_size = load_image(kernel_filename,
+ phys_ram_base + KERNEL_LOAD_ADDR);
+ entry = KERNEL_LOAD_ADDR;
+ is_linux = 1;
+ }
+ if (kernel_size < 0) {
+ fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
+ exit(1);
+ }
+ if (!is_linux) {
+ /* Jump to the entry point. */
env->regs[15] = entry & 0xfffffffe;
env->thumb = entry & 1;
} else {
- /* Raw binary image. Assume it is a Linux zImage. */
- kernel_size = load_image(kernel_filename,
- phys_ram_base + KERNEL_LOAD_ADDR);
- if (kernel_size < 0) {
- fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
- exit(1);
- }
if (initrd_filename) {
initrd_size = load_image(initrd_filename,
phys_ram_base + INITRD_LOAD_ADDR);
bootloader[1] |= board_id & 0xff;
bootloader[2] |= (board_id >> 8) & 0xff;
bootloader[5] = KERNEL_ARGS_ADDR;
- bootloader[6] = KERNEL_LOAD_ADDR;
+ bootloader[6] = entry;
for (n = 0; n < sizeof(bootloader) / 4; n++)
stl_raw(phys_ram_base + (n * 4), bootloader[n]);
set_kernel_args(ram_size, initrd_size, kernel_cmdline);
*/
#include "vl.h"
#include "disas.h"
+#include "uboot_image.h"
/* return the size or -1 if error */
int get_image_size(const char *filename)
close(fd);
return -1;
}
+
+static void bswap_uboot_header(uboot_image_header_t *hdr)
+{
+#ifndef WORDS_BIGENDIAN
+ bswap32s(&hdr->ih_magic);
+ bswap32s(&hdr->ih_hcrc);
+ bswap32s(&hdr->ih_time);
+ bswap32s(&hdr->ih_size);
+ bswap32s(&hdr->ih_load);
+ bswap32s(&hdr->ih_ep);
+ bswap32s(&hdr->ih_dcrc);
+#endif
+}
+
+/* Load a U-Boot image. */
+int load_uboot(const char *filename, target_ulong *ep, int *is_linux)
+{
+
+ int fd;
+ int size;
+ uboot_image_header_t h;
+ uboot_image_header_t *hdr = &h;
+ uint8_t *data = NULL;
+
+ fd = open(filename, O_RDONLY | O_BINARY);
+ if (fd < 0)
+ return -1;
+
+ size = read(fd, hdr, sizeof(uboot_image_header_t));
+ if (size < 0)
+ goto fail;
+
+ bswap_uboot_header(hdr);
+
+ if (hdr->ih_magic != IH_MAGIC)
+ goto fail;
+
+ /* TODO: Implement Multi-File images. */
+ if (hdr->ih_type == IH_TYPE_MULTI) {
+ fprintf(stderr, "Unable to load multi-file u-boot images\n");
+ goto fail;
+ }
+
+ /* TODO: Implement compressed images. */
+ if (hdr->ih_comp != IH_COMP_NONE) {
+ fprintf(stderr, "Unable to load compressed u-boot images\n");
+ goto fail;
+ }
+
+ /* TODO: Check CPU type. */
+ if (is_linux) {
+ if (hdr->ih_type == IH_TYPE_KERNEL && hdr->ih_os == IH_OS_LINUX)
+ *is_linux = 1;
+ else
+ *is_linux = 0;
+ }
+
+ *ep = hdr->ih_ep;
+ data = qemu_malloc(hdr->ih_size);
+ if (!data)
+ goto fail;
+
+ if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
+ fprintf(stderr, "Error reading file\n");
+ goto fail;
+ }
+
+ cpu_physical_memory_write_rom(hdr->ih_load, data, hdr->ih_size);
+
+ return hdr->ih_size;
+
+fail:
+ if (data)
+ qemu_free(data);
+ close(fd);
+ return -1;
+}
--- /dev/null
+/*
+ * (C) Copyright 2000-2005
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ ********************************************************************
+ * NOTE: This header file defines an interface to U-Boot. Including
+ * this (unmodified) header file in another file is considered normal
+ * use of U-Boot, and does *not* fall under the heading of "derived
+ * work".
+ ********************************************************************
+ */
+
+#ifndef __UBOOT_IMAGE_H__
+#define __UBOOT_IMAGE_H__
+
+/*
+ * Operating System Codes
+ */
+#define IH_OS_INVALID 0 /* Invalid OS */
+#define IH_OS_OPENBSD 1 /* OpenBSD */
+#define IH_OS_NETBSD 2 /* NetBSD */
+#define IH_OS_FREEBSD 3 /* FreeBSD */
+#define IH_OS_4_4BSD 4 /* 4.4BSD */
+#define IH_OS_LINUX 5 /* Linux */
+#define IH_OS_SVR4 6 /* SVR4 */
+#define IH_OS_ESIX 7 /* Esix */
+#define IH_OS_SOLARIS 8 /* Solaris */
+#define IH_OS_IRIX 9 /* Irix */
+#define IH_OS_SCO 10 /* SCO */
+#define IH_OS_DELL 11 /* Dell */
+#define IH_OS_NCR 12 /* NCR */
+#define IH_OS_LYNXOS 13 /* LynxOS */
+#define IH_OS_VXWORKS 14 /* VxWorks */
+#define IH_OS_PSOS 15 /* pSOS */
+#define IH_OS_QNX 16 /* QNX */
+#define IH_OS_U_BOOT 17 /* Firmware */
+#define IH_OS_RTEMS 18 /* RTEMS */
+#define IH_OS_ARTOS 19 /* ARTOS */
+#define IH_OS_UNITY 20 /* Unity OS */
+
+/*
+ * CPU Architecture Codes (supported by Linux)
+ */
+#define IH_CPU_INVALID 0 /* Invalid CPU */
+#define IH_CPU_ALPHA 1 /* Alpha */
+#define IH_CPU_ARM 2 /* ARM */
+#define IH_CPU_I386 3 /* Intel x86 */
+#define IH_CPU_IA64 4 /* IA64 */
+#define IH_CPU_MIPS 5 /* MIPS */
+#define IH_CPU_MIPS64 6 /* MIPS 64 Bit */
+#define IH_CPU_PPC 7 /* PowerPC */
+#define IH_CPU_S390 8 /* IBM S390 */
+#define IH_CPU_SH 9 /* SuperH */
+#define IH_CPU_SPARC 10 /* Sparc */
+#define IH_CPU_SPARC64 11 /* Sparc 64 Bit */
+#define IH_CPU_M68K 12 /* M68K */
+#define IH_CPU_NIOS 13 /* Nios-32 */
+#define IH_CPU_MICROBLAZE 14 /* MicroBlaze */
+#define IH_CPU_NIOS2 15 /* Nios-II */
+#define IH_CPU_BLACKFIN 16 /* Blackfin */
+#define IH_CPU_AVR32 17 /* AVR32 */
+
+/*
+ * Image Types
+ *
+ * "Standalone Programs" are directly runnable in the environment
+ * provided by U-Boot; it is expected that (if they behave
+ * well) you can continue to work in U-Boot after return from
+ * the Standalone Program.
+ * "OS Kernel Images" are usually images of some Embedded OS which
+ * will take over control completely. Usually these programs
+ * will install their own set of exception handlers, device
+ * drivers, set up the MMU, etc. - this means, that you cannot
+ * expect to re-enter U-Boot except by resetting the CPU.
+ * "RAMDisk Images" are more or less just data blocks, and their
+ * parameters (address, size) are passed to an OS kernel that is
+ * being started.
+ * "Multi-File Images" contain several images, typically an OS
+ * (Linux) kernel image and one or more data images like
+ * RAMDisks. This construct is useful for instance when you want
+ * to boot over the network using BOOTP etc., where the boot
+ * server provides just a single image file, but you want to get
+ * for instance an OS kernel and a RAMDisk image.
+ *
+ * "Multi-File Images" start with a list of image sizes, each
+ * image size (in bytes) specified by an "uint32_t" in network
+ * byte order. This list is terminated by an "(uint32_t)0".
+ * Immediately after the terminating 0 follow the images, one by
+ * one, all aligned on "uint32_t" boundaries (size rounded up to
+ * a multiple of 4 bytes - except for the last file).
+ *
+ * "Firmware Images" are binary images containing firmware (like
+ * U-Boot or FPGA images) which usually will be programmed to
+ * flash memory.
+ *
+ * "Script files" are command sequences that will be executed by
+ * U-Boot's command interpreter; this feature is especially
+ * useful when you configure U-Boot to use a real shell (hush)
+ * as command interpreter (=> Shell Scripts).
+ */
+
+#define IH_TYPE_INVALID 0 /* Invalid Image */
+#define IH_TYPE_STANDALONE 1 /* Standalone Program */
+#define IH_TYPE_KERNEL 2 /* OS Kernel Image */
+#define IH_TYPE_RAMDISK 3 /* RAMDisk Image */
+#define IH_TYPE_MULTI 4 /* Multi-File Image */
+#define IH_TYPE_FIRMWARE 5 /* Firmware Image */
+#define IH_TYPE_SCRIPT 6 /* Script file */
+#define IH_TYPE_FILESYSTEM 7 /* Filesystem Image (any type) */
+#define IH_TYPE_FLATDT 8 /* Binary Flat Device Tree Blob */
+
+/*
+ * Compression Types
+ */
+#define IH_COMP_NONE 0 /* No Compression Used */
+#define IH_COMP_GZIP 1 /* gzip Compression Used */
+#define IH_COMP_BZIP2 2 /* bzip2 Compression Used */
+
+#define IH_MAGIC 0x27051956 /* Image Magic Number */
+#define IH_NMLEN 32 /* Image Name Length */
+
+/*
+ * all data in network byte order (aka natural aka bigendian)
+ */
+
+typedef struct uboot_image_header {
+ uint32_t ih_magic; /* Image Header Magic Number */
+ uint32_t ih_hcrc; /* Image Header CRC Checksum */
+ uint32_t ih_time; /* Image Creation Timestamp */
+ uint32_t ih_size; /* Image Data Size */
+ uint32_t ih_load; /* Data Load Address */
+ uint32_t ih_ep; /* Entry Point Address */
+ uint32_t ih_dcrc; /* Image Data CRC Checksum */
+ uint8_t ih_os; /* Operating System */
+ uint8_t ih_arch; /* CPU architecture */
+ uint8_t ih_type; /* Image Type */
+ uint8_t ih_comp; /* Compression Type */
+ uint8_t ih_name[IH_NMLEN]; /* Image Name */
+} uboot_image_header_t;
+
+
+#endif /* __IMAGE_H__ */
projects / qemu / commitdiff