OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

Simple u-boot image loading support.

Browse Source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2472 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-03-06 23:52:01 +00:00
parent 35f1de3192
commit 1c7b3754f6
4 changed files with 261 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
hw/arm_boot.c
View File

@ -71,7 +71,9 @@ void arm_load_kernel(CPUState *env, int ram_size, const char *kernel_filename,
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) {
@ -79,19 +81,27 @@ void arm_load_kernel(CPUState *env, int ram_size, const char *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);
@ -106,7 +116,7 @@ void arm_load_kernel(CPUState *env, int ram_size, const char *kernel_filename,
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);

78
loader.c
View File

@ -23,6 +23,7 @@
*/
#include "vl.h"
#include "disas.h"
#include "uboot_image.h"
/* return the size or -1 if error */
int get_image_size(const char *filename)
@ -241,3 +242,80 @@ int load_elf(const char *filename, int64_t virt_to_phys_addend,
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;
}

160
uboot_image.h Normal file
View File

@ -0,0 +1,160 @@
/*
* (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__ */

1
vl.h
View File

@ -1155,6 +1155,7 @@ int get_image_size(const char *filename);
int load_image(const char *filename, uint8_t *addr);
int load_elf(const char *filename, int64_t virt_to_phys_addend, uint64_t *pentry);
int load_aout(const char *filename, uint8_t *addr);
int load_uboot(const char *filename, target_ulong *ep, int *is_linux);
/* slavio_timer.c */
void slavio_timer_init(uint32_t addr, int irq, int mode, unsigned int cpu);