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microblaze: Fix latent bug with default DTB lookup 

microblaze_load_kernel() fails to call
qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_filename) when no -machine
options are given.  This can't normally happen, because -machine
option kernel is mandatory for this target.  Fix it anyway, by using
qemu_get_machine_opts().

Cc: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372943363-24081-6-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Markus Armbruster 2013-07-04 15:09:21 +02:00 committed by Anthony Liguori
parent 36ad0e948e
commit 7bccd94026
1 changed files with 12 additions and 13 deletions
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25
hw/microblaze/boot.c
View File

@ -28,6 +28,7 @@
#include "qemu/config-file.h"
#include "qemu-common.h"
#include "sysemu/device_tree.h"
#include "sysemu/sysemu.h"
#include "hw/loader.h"
#include "elf.h"
@ -93,20 +94,18 @@ void microblaze_load_kernel(MicroBlazeCPU *cpu, hwaddr ddr_base,
void (*machine_cpu_reset)(MicroBlazeCPU *))
{
QemuOpts *machine_opts;
const char *kernel_filename = NULL;
const char *kernel_cmdline = NULL;
const char *kernel_filename;
const char *kernel_cmdline;
const char *dtb_arg;
machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
if (machine_opts) {
const char *dtb_arg;
kernel_filename = qemu_opt_get(machine_opts, "kernel");
kernel_cmdline = qemu_opt_get(machine_opts, "append");
dtb_arg = qemu_opt_get(machine_opts, "dtb");
if (dtb_arg) { /* Preference a -dtb argument */
dtb_filename = dtb_arg;
} else { /* default to pcbios dtb as passed by machine_init */
dtb_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_filename);
}
machine_opts = qemu_get_machine_opts();
kernel_filename = qemu_opt_get(machine_opts, "kernel");
kernel_cmdline = qemu_opt_get(machine_opts, "append");
dtb_arg = qemu_opt_get(machine_opts, "dtb");
if (dtb_arg) { /* Preference a -dtb argument */
dtb_filename = dtb_arg;
} else { /* default to pcbios dtb as passed by machine_init */
dtb_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_filename);
}
boot_info.machine_cpu_reset = machine_cpu_reset;