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| author | John Rigby <john.rigby@linaro.org> | 2013-11-22 17:17:10 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2013-12-10 13:28:30 +0000 |
| commit | 0fb79851c3dffa06de648d955ee2f2b47bfb96ce (patch) | |
| tree | a340a17a7a36a59689754c1a4f43e4b18796421d /hw/arm/boot.c | |
| parent | ef6de70ea811d66ebb6b9b6046e304f588e754bb (diff) | |
| download | qemu-0fb79851c3dffa06de648d955ee2f2b47bfb96ce.zip qemu-0fb79851c3dffa06de648d955ee2f2b47bfb96ce.tar.gz qemu-0fb79851c3dffa06de648d955ee2f2b47bfb96ce.tar.bz2 | |
hw/arm/boot: Allow boards to provide an fdt blob
If no fdt is provided on command line and the new field
get_dtb in struct arm_boot_info is set then call it to
get a device tree blob.
Signed-off-by: John Rigby <john.rigby@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-4-git-send-email-peter.maydell@linaro.org
[PMM: minor tweaks and cleanup]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/boot.c')
| -rw-r--r-- | hw/arm/boot.c | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 583ec79..55d552f 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -228,23 +228,31 @@ static void set_kernel_args_old(const struct arm_boot_info *info) static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo) { void *fdt = NULL; - char *filename; int size, rc; uint32_t acells, scells; - filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename); - if (!filename) { - fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename); - goto fail; - } + if (binfo->dtb_filename) { + char *filename; + filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename); + if (!filename) { + fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename); + goto fail; + } - fdt = load_device_tree(filename, &size); - if (!fdt) { - fprintf(stderr, "Couldn't open dtb file %s\n", filename); + fdt = load_device_tree(filename, &size); + if (!fdt) { + fprintf(stderr, "Couldn't open dtb file %s\n", filename); + g_free(filename); + goto fail; + } g_free(filename); - goto fail; + } else if (binfo->get_dtb) { + fdt = binfo->get_dtb(binfo, &size); + if (!fdt) { + fprintf(stderr, "Board was unable to create a dtb blob\n"); + goto fail; + } } - g_free(filename); acells = qemu_devtree_getprop_cell(fdt, "/", "#address-cells"); scells = qemu_devtree_getprop_cell(fdt, "/", "#size-cells"); @@ -438,7 +446,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) /* for device tree boot, we pass the DTB directly in r2. Otherwise * we point to the kernel args. */ - if (info->dtb_filename) { + if (info->dtb_filename || info->get_dtb) { /* Place the DTB after the initrd in memory. Note that some * kernels will trash anything in the 4K page the initrd * ends in, so make sure the DTB isn't caught up in that. |