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/*
* CRIS image loading.
*
* Copyright (c) 2010 Edgar E. Iglesias, Axis Communications AB.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/loader.h"
#include "elf.h"
#include "boot.h"
static void main_cpu_reset(void *opaque)
{
CRISCPU *cpu = opaque;
CPUCRISState *env = &cpu->env;
struct cris_load_info *li;
li = env->load_info;
cpu_reset(CPU(cpu));
if (!li) {
/* nothing more to do. */
return;
}
env->pc = li->entry;
if (li->image_filename) {
env->regs[8] = 0x56902387; /* RAM boot magic. */
env->regs[9] = 0x40004000 + li->image_size;
}
if (li->cmdline) {
/* Let the kernel know we are modifying the cmdline. */
env->regs[10] = 0x87109563;
env->regs[11] = 0x40000000;
}
}
static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
{
return addr - 0x80000000LL;
}
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, EM_CRIS, 0, 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);
}
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