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| author | Peter Maydell <peter.maydell@linaro.org> | 2013-07-16 13:25:10 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2013-07-19 12:58:47 +0100 |
| commit | 3b1cceb8b52320150fd93dc094ba11fd01c6adfa (patch) | |
| tree | 97f7d7475135b5bff8846564bae9911e352eff52 | |
| parent | 4b52530be987f33f8bffbdec9826298ad53ec180 (diff) | |
| download | qemu-3b1cceb8b52320150fd93dc094ba11fd01c6adfa.zip qemu-3b1cceb8b52320150fd93dc094ba11fd01c6adfa.tar.gz qemu-3b1cceb8b52320150fd93dc094ba11fd01c6adfa.tar.bz2 | |
arm/boot: Allow boards to modify the FDT blob
Add a callback hook in arm_boot_info to allow board models to
modify the device tree blob if they need to. (The major expected
use case is to add virtio-mmio nodes for virtio-mmio transports
that exist in QEMU but not in the hardware.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1373977512-28932-7-git-send-email-peter.maydell@linaro.org
| -rw-r--r-- | hw/arm/boot.c | 5 | ||||
| -rw-r--r-- | include/hw/arm/arm.h | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 1780316..9fbe5d2 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -294,6 +294,11 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo) goto fail; } } + + if (binfo->modify_dtb) { + binfo->modify_dtb(binfo, fdt); + } + qemu_devtree_dumpdtb(fdt, size); cpu_physical_memory_write(addr, fdt, size); diff --git a/include/hw/arm/arm.h b/include/hw/arm/arm.h index 7b2b02d..bae87c6 100644 --- a/include/hw/arm/arm.h +++ b/include/hw/arm/arm.h @@ -55,6 +55,10 @@ struct arm_boot_info { const struct arm_boot_info *info); void (*secondary_cpu_reset_hook)(ARMCPU *cpu, const struct arm_boot_info *info); + /* if a board needs to be able to modify a device tree provided by + * the user it should implement this hook. + */ + void (*modify_dtb)(const struct arm_boot_info *info, void *fdt); /* Used internally by arm_boot.c */ int is_linux; hwaddr initrd_start; |