| .. 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. |
