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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2014-09-12 14:06:50 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-09-12 14:06:50 +0100 |
| commit | 92df845070290236d1b28b03453deec1ae9c4263 (patch) | |
| tree | 9052da354b4e2bf4e5f757d16e94b066a30847da /hw/arm/boot.c | |
| parent | 69e7f76f6a1ed8fe13602c8b5f51cdb6ce3a3981 (diff) | |
| download | qemu-92df845070290236d1b28b03453deec1ae9c4263.zip qemu-92df845070290236d1b28b03453deec1ae9c4263.tar.gz qemu-92df845070290236d1b28b03453deec1ae9c4263.tar.bz2 | |
hw/arm/boot: enable DTB support when booting ELF images
Add support for loading DTB images when booting ELF images using
-kernel. If there are no conflicts with the placement of the ELF
segments, the DTB image is loaded at the base of RAM.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 1410453915-9344-5-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/boot.c')
| -rw-r--r-- | hw/arm/boot.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 1bed02d..c8dc34f 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -482,7 +482,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) int kernel_size; int initrd_size; int is_linux = 0; - uint64_t elf_entry; + uint64_t elf_entry, elf_low_addr, elf_high_addr; int elf_machine; hwaddr entry, kernel_load_offset; int big_endian; @@ -549,7 +549,25 @@ 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); + &elf_low_addr, &elf_high_addr, big_endian, + elf_machine, 1); + if (kernel_size > 0 && have_dtb(info)) { + /* If there is still some room left at the base of RAM, try and put + * the DTB there like we do for images loaded with -bios or -pflash. + */ + if (elf_low_addr > info->loader_start + || elf_high_addr < info->loader_start) { + /* Pass elf_low_addr as address limit to load_dtb if it may be + * pointing into RAM, otherwise pass '0' (no limit) + */ + if (elf_low_addr < info->loader_start) { + elf_low_addr = 0; + } + if (load_dtb(info->loader_start, info, elf_low_addr) < 0) { + exit(1); + } + } + } entry = elf_entry; if (kernel_size < 0) { kernel_size = load_uimage(info->kernel_filename, &entry, NULL, |