| /* |
| * Copyright (c) 2025 Peter Johanson |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /* |
| * Be sure we don't overlap the reserved byte for storing the boot-mode |
| */ |
| &sram0 { |
| reg = <0x20000004 ((DT_SIZE_K(264)) - 4)>; |
| }; |
| |
| / { |
| chosen { |
| zephyr,boot-mode = &boot_mode; |
| }; |
| |
| /* |
| * Placed at the start, to avoid the bootrom clobbering our RAM, |
| * with it's stack. |
| */ |
| sram@20000000 { |
| compatible = "zephyr,memory-region", "mmio-sram"; |
| reg = <0x20000000 0x4>; |
| zephyr,memory-region = "RetainedMem"; |
| status = "okay"; |
| |
| retainedmem { |
| compatible = "zephyr,retained-ram"; |
| status = "okay"; |
| #address-cells = <1>; |
| #size-cells = <1>; |
| |
| boot_mode: retention@0 { |
| compatible = "zephyr,retention"; |
| status = "okay"; |
| reg = <0x0 0x1>; |
| }; |
| }; |
| }; |
| }; |
