9fb2856f68
On the Chromecast, the bootloader provides us with an ATAG_MEM of start=0x01000000 and size=0x3eff8000. This is clearly incorrect, as the range given encompasses nearly a GiB but the Chromecast only has 512MiB of RAM! Additionally, this causes the kernel to be decompressed at 0x00008000, below the claimed beginning of RAM, and so the boot fails. Since the existing ATAG parsing code runs before the kernel is even decompressed and irrevocably patches the device tree, don't even try to bypass it. Instead, use the "linux,usable-memory" property instead of the "reg" property to define the real range. The ATAG code only overwrites reg, but linux,usable-memory is checked first in the OF driver, so the fact that reg gets changed makes no difference. Signed-off-by: Thomas Hebb <tommyhebb@gmail.com> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.