6cdda0ff4b
While loading the executable, some platforms (like AVR) need to detect CPU type that executable is built for - and, with this patch, this is enabled by reading the field 'e_flags' of the ELF header of the executable in question. The change expands functionality of the following functions: - load_elf() - load_elf_as() - load_elf_ram() - load_elf_ram_sym() The argument added to these functions is called 'pflags' and is of type 'uint32_t*' (that matches 'pointer to 'elf_word'', 'elf_word' being the type of the field 'e_flags', in both 32-bit and 64-bit variants of ELF header). Callers are allowed to pass NULL as that argument, and in such case no lookup to the field 'e_flags' will happen, and no information will be returned, of course. CC: Richard Henderson <rth@twiddle.net> CC: Peter Maydell <peter.maydell@linaro.org> CC: Edgar E. Iglesias <edgar.iglesias@gmail.com> CC: Michael Walle <michael@walle.cc> CC: Thomas Huth <huth@tuxfamily.org> CC: Laurent Vivier <laurent@vivier.eu> CC: Philippe Mathieu-Daudé <f4bug@amsat.org> CC: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com> CC: Aurelien Jarno <aurelien@aurel32.net> CC: Jia Liu <proljc@gmail.com> CC: David Gibson <david@gibson.dropbear.id.au> CC: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> CC: BALATON Zoltan <balaton@eik.bme.hu> CC: Christian Borntraeger <borntraeger@de.ibm.com> CC: Thomas Huth <thuth@redhat.com> CC: Artyom Tarasenko <atar4qemu@gmail.com> CC: Fabien Chouteau <chouteau@adacore.com> CC: KONRAD Frederic <frederic.konrad@adacore.com> CC: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com> Signed-off-by: Michael Rolnik <mrolnik@gmail.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1580079311-20447-24-git-send-email-aleksandar.markovic@rt-rk.com>
103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/*
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* CRIS image loading.
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*
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* Copyright (c) 2010 Edgar E. Iglesias, Axis Communications AB.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "hw/loader.h"
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#include "elf.h"
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#include "boot.h"
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#include "qemu/cutils.h"
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#include "sysemu/reset.h"
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static void main_cpu_reset(void *opaque)
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{
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CRISCPU *cpu = opaque;
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CPUCRISState *env = &cpu->env;
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struct cris_load_info *li;
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li = env->load_info;
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cpu_reset(CPU(cpu));
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if (!li) {
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/* nothing more to do. */
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return;
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}
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env->pc = li->entry;
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if (li->image_filename) {
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env->regs[8] = 0x56902387; /* RAM boot magic. */
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env->regs[9] = 0x40004000 + li->image_size;
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}
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if (li->cmdline) {
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/* Let the kernel know we are modifying the cmdline. */
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env->regs[10] = 0x87109563;
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env->regs[11] = 0x40000000;
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}
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}
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static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
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{
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return addr - 0x80000000LL;
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}
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void cris_load_image(CRISCPU *cpu, struct cris_load_info *li)
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{
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CPUCRISState *env = &cpu->env;
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uint64_t entry, high;
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int kcmdline_len;
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int image_size;
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env->load_info = li;
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/* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
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devboard SDK. */
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image_size = load_elf(li->image_filename, NULL,
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translate_kernel_address, NULL,
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&entry, NULL, &high, NULL, 0, EM_CRIS, 0, 0);
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li->entry = entry;
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if (image_size < 0) {
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/* Takes a kimage from the axis devboard SDK. */
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image_size = load_image_targphys(li->image_filename, 0x40004000,
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ram_size);
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li->entry = 0x40004000;
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}
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if (image_size < 0) {
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fprintf(stderr, "qemu: could not load kernel '%s'\n",
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li->image_filename);
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exit(1);
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}
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if (li->cmdline && (kcmdline_len = strlen(li->cmdline))) {
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if (kcmdline_len > 256) {
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fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
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exit(1);
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}
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pstrcpy_targphys("cmdline", 0x40000000, 256, li->cmdline);
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}
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qemu_register_reset(main_cpu_reset, cpu);
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}
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