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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 | 4c4bf654746eae5a042bde6c150d534d8849b762 (patch) | |
| tree | aa0a0c2c5114074d684d2b5b412a1effa0ae78c1 /hw/arm | |
| parent | 0be969a2d974971628fc4ed95834d22ecf0fd497 (diff) | |
| download | qemu-4c4bf654746eae5a042bde6c150d534d8849b762.zip qemu-4c4bf654746eae5a042bde6c150d534d8849b762.tar.gz qemu-4c4bf654746eae5a042bde6c150d534d8849b762.tar.bz2 | |
hw/arm/boot: load DTB as a ROM image
In order to make the device tree blob (DTB) available in memory not only at
first boot, but also after system reset, use rom_blob_add_fixed() to install
it into memory.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 1410453915-9344-2-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm')
| -rw-r--r-- | hw/arm/boot.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/arm/boot.c b/hw/arm/boot.c index e32f2f4..50eca93 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -396,7 +396,10 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo) qemu_fdt_dumpdtb(fdt, size); - cpu_physical_memory_write(addr, fdt, size); + /* Put the DTB into the memory map as a ROM image: this will ensure + * the DTB is copied again upon reset, even if addr points into RAM. + */ + rom_add_blob_fixed("dtb", fdt, size, addr); g_free(fdt); |