On Mi, 2016-01-06 at 17:09 +0100, Marc Kleine-Budde wrote:
[...]
> >> + /*
> >> + * Put oftree/initrd close behind compressed kernel image to avoid
> >> + * placing it outside of the kernels lowmem.
> >> + */
> >> + if (handle->initrd_size) {
> >> + data->initrd_address = PAGE_ALIGN(data->os_res->end + SZ_1M);
> >> + data->initrd_res = request_sdram_region("fit-initrd",
> >> data->initrd_address, handle->initrd_size);
> >> + if (!data->initrd_res) {
> >> + ret = -ENOMEM;
> >> + goto err_out;
> >> + }
> >> + memcpy((void *)data->initrd_res->start, handle->initrd,
> >> handle->initrd_size);
> >> + }
> >> +
> >> + data->of_root_node = of_unflatten_dtb(handle->oftree);
> >> + if (!data->of_root_node) {
> >> + pr_err("unable to unflatten devicetree\n");
> >> + ret = -EINVAL;
> >> + goto err_out;
> >> + }
> >> +
> >> + /*
> >> + * Put devicetree right after initrd if present or after the kernel
> >> + * if not.
> >> + */
> >> + if (data->initrd_res)
> >> + mem_free = PAGE_ALIGN(data->initrd_res->end);
> >> + else
> >> + mem_free = PAGE_ALIGN(data->os_res->end + SZ_1M);
> > Why the extra 1M?
>
> Let's see if Jan remembers, he has coded this.
This is the same as in arch/arm/lib/bootm.c. I wanted to avoid having
different behaviors.
Regards,
Jan
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