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| -rw-r--r-- | Documentation/sh/booting.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/sh/booting.rst b/Documentation/sh/booting.rst new file mode 100644 index 000000000..d851c49a0 --- /dev/null +++ b/Documentation/sh/booting.rst @@ -0,0 +1,12 @@ +.. SPDX-License-Identifier: GPL-2.0 + +DeviceTree Booting +------------------ + + Device-tree compatible SH bootloaders are expected to provide the physical + address of the device tree blob in r4. Since legacy bootloaders did not + guarantee any particular initial register state, kernels built to + inter-operate with old bootloaders must either use a builtin DTB or + select a legacy board option (something other than CONFIG_SH_DEVICE_TREE) + that does not use device tree. Support for the latter is being phased out + in favor of device tree. |