| /* |
| * 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 "hw/hw.h" |
| #include "hw/loader.h" |
| #include "elf.h" |
| #include "hw/cris-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, 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); |
| } |