haraldwolff/qemu-patch-raspberry4
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target-arm: Load ELF images with the correct machine type for CPU

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When trying to load an ELF file specified via -kernel, we need to
pass load_elf() the ELF machine type corresponding to the CPU we're
booting with, not the one corresponding to the softmmu binary
we happen to be running. (The two are different in the case of
loading a 32-bit ARM ELF file into a 32 bit CPU being emulated
by qemu-system aarch64.) This was causing us to incorrectly fail
to load ELF images in this situation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-id: 1395427476-25546-1-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2014-03-21 18:44:36 +00:00
parent d108609bf9
commit da0af40dd7
1 changed files with 4 additions and 1 deletions
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5
hw/arm/boot.c
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@ -448,6 +448,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
int initrd_size;
int is_linux = 0;
uint64_t elf_entry;
int elf_machine;
hwaddr entry, kernel_load_offset;
int big_endian;
static const ARMInsnFixup *primary_loader;
@ -463,9 +464,11 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
primary_loader = bootloader_aarch64;
kernel_load_offset = KERNEL64_LOAD_ADDR;
elf_machine = EM_AARCH64;
} else {
primary_loader = bootloader;
kernel_load_offset = KERNEL_LOAD_ADDR;
elf_machine = EM_ARM;
}
info->dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb");
@ -501,7 +504,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
/* Assume that raw images are linux kernels, and ELF images are not. */
kernel_size = load_elf(info->kernel_filename, NULL, NULL, &elf_entry,
NULL, NULL, big_endian, ELF_MACHINE, 1);
NULL, NULL, big_endian, elf_machine, 1);
entry = elf_entry;
if (kernel_size < 0) {
kernel_size = load_uimage(info->kernel_filename, &entry, NULL,