cros/dts/flashmap-coreboot-8mb.dtsi

/*
 * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

/ {
	/*
	 * Names will be capitalized and hyphen converted to underscore by
	 * cros_bundle_firmware.
	 */
	flash@ff800000 {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "chromeos,flashmap";
		reg = <0xff800000 0x00800000>;

		/*
		 * Non-BIOS section of the Intel Firmware Descriptor image.
		 * This section covers the all the parts that are not shown
		 * to the CPU right below 4G.
		 */
		si-all {
			label = "si-all";
			reg = <0x00000000 0x00180000>;
			type = "ifd";
		};

		/*
		 * Firmware Descriptor section of the Intel Firmware Descriptor
		 * image.
		 */
		si-desc {
			label = "si-desc";
			reg = <0x00000000 0x00001000>;
		};

		/*
		 * Intel Management Engine section of the Intel Firmware
		 * Descriptor image.
		 */
		si-me {
			label = "si-me";
			reg = <0x00001000 0x0017f000>;
		};

		/*
		 * "BIOS" section of the Intel Firmware Descriptor image.
		 * This section covers the complete image as shown to the
		 * CPU right below 4G.
		 */
		si-bios {
			label ="si-bios";
			reg = <0x00180000 0x00680000>;
		};

		/* ---- Section: Rewritable VPD 4 KB ---- */
		rw-vpd {
			label = "rw-vpd";
			/* Alignment: 4k (for updating) */
			reg = <0x00180000 0x00001000>;
			type = "wiped";
			wipe-value = [ff];
		};

		/*
		 * This space is currently unused and reserved for future
		 * extensions. cros_bundle_firmware dislikes holes in the
		 * FMAP, so we cover all empty space here.
		 */
		rw-unused {
			label = "rw-unused";
			reg = <0x00181000 0x00067000>;
			type = "wiped";
			wipe-value = [ff];
		};

		/* ---- Section: Rewritable shared 80 KB---- */
		shared-section {
			/* Alignment: 4k (for updating).
			 * Anything in this range may be updated in recovery. */
			label = "rw-shared";
			reg = <0x001e8000 0x00018000>;
		};

		/* ---- Section: Rewritable u-boot environment 16 KB---- */
		rw-environment {
			label = "rw-environment";
			/* Alignment 4k: (for updating) */
			reg = <0x001e8000 0x00004000>;
			/*
			 * We could put the dev environment here, but U-Boot has
			 * a default built in. Devs can 'saveenv' to set this
			 * up.
			 */
			type = "wiped";
			wipe-value = [00];
		};

		/* ---- Section: Rewritable MRC cache 64 KB ---- */
		rw-mrc-cache {
			label = "rw-mrc-cache";
			/* Alignment: 4k (for updating) */
			reg = <0x001ec000 0x00010000>;
			type = "wiped";
			wipe-value = [ff];
		};

		/* ---- Section: Rewritable private 16 KB---- */
		dev-cfg {
			label = "dev-cfg";
			/* Alignment: 4k (for updating) */
			reg = <0x001fc000 0x00004000>;
			type = "wiped";
			wipe-value = [00];
		};

		/* ---- Section: Rewritable slot A ---- */
		rw-a {
			label = "rw-section-a";
			/* Alignment: 4k (for updating) */
			reg = <0x00200000 0x00100000>;
		};
		rw-a-vblock {
			label = "vblock-a";
			/*
			 * Alignment: 4k (for updating) and must be in start of
			 * each RW_SECTION.
			 */
			reg = <0x00200000 0x00010000>;
			type = "keyblock boot";
			keyblock = "firmware.keyblock";
			signprivate = "firmware_data_key.vbprivk";
			version = <1>;
			kernelkey = "kernel_subkey.vbpubk";
			preamble-flags = <1>;
		};
		rw-a-boot {
			/* Alignment: no requirement (yet). */
			label = "fw-main-a";
			reg = <0x00210000 0x0007ffc0>;
			type = "blob boot";
		};
		rw-a-firmware-id {
			/* Alignment: no requirement. */
			label = "rw-fwid-a";
			reg = <0x0028ffc0 0x00000040>;
			read-only;
			type = "blobstring fwid";
		};
		rw-a-unused {
			label = "rw-unused-a";
			reg = <0x00290000 0x00070000>;
			type = "wiped";
			wipe-value = [ff];
		};

		/* ---- Section: Rewritable slot B ---- */
		rw-b {
			label = "rw-section-b";
			/* Alignment: 4k (for updating) */
			reg = <0x00300000 0x00100000>;
		};
		rw-b-vblock {
			label = "vblock-b";
			/*
			 * Alignment: 4k (for updating) and must be in start of
			 * each RW_SECTION.
			 */
			reg = <0x00300000 0x00010000>;
			type = "keyblock boot";
			keyblock = "firmware.keyblock";
			signprivate = "firmware_data_key.vbprivk";
			version = <1>;
			kernelkey = "kernel_subkey.vbpubk";
			preamble-flags = <1>;
		};
		rw-b-boot {
			label = "fw-main-b";
			/* Alignment: no requirement (yet). */
			reg = <0x00310000 0x0007ffc0>;
			type = "blob boot";
		};
		rw-b-firmware-id {
			label = "rw-fwid-b";
			/* Alignment: no requirement. */
			reg = <0x0038ffc0 0x00000040>;
			read-only;
			type = "blobstring fwid";
		};
		rw-b-unused {
			label = "rw-unused-b";
			reg = <0x00390000 0x00070000>;
			type = "wiped";
			wipe-value = [ff];
		};

		/*
		 * This space is currently unused and reserved for future
		 * extensions. cros_bundle_firmware dislikes holes in the
		 * FMAP, so we cover all empty space here.
		 */
		ro-unused-1 {
			label = "ro-unused-1";
			reg = <0x00400000 0x00170000>;
			type = "wiped";
			wipe-value = [ff];
		};

		/* ---- Section: Vital-product data (VPD) ---- */
		ro-vpd {
			label = "ro-vpd";

			/* VPD offset must be aligned to 4K bytes */
			reg = <0x00570000 0x00020000>; /* 128 KB */
			read-only;
			type = "wiped";
			wipe-value = [ff];
		};

		/*
		 * This space is currently unused and reserved for future
		 * extensions. cros_bundle_firmware dislikes holes in the
		 * FMAP, so we cover all empty space here.
		 */
		ro-unused-2 {
			label = "ro-unused-2";
			reg = <0x00590000 0x000e0000>;
			type = "wiped";
			wipe-value = [ff];
		};

		/* ---- Section: Read-only ---- */
		ro-section {
			label = "ro-section";
			reg = <0x00670000 0x00190000>;
			read-only;
		};
		ro-fmap {
			label = "fmap";

			/*
			 * We encourage to align FMAP partition in as large
			 * block as possible so that flashrom can find it soon.
			 * For example, aligning to 512KB is better than to
			 * 256KB.
			 */

			reg = <0x00670000 0x00000800>;
			read-only;
			type = "fmap";
			ver-major = <1>;
			ver-minor = <0>;
		};
		ro-firmware-id {
			label = "ro-frid";
			reg = <0x00670800 0x00000040>;
			read-only;
			type = "blobstring fwid";
		};
		ro-padding {
			label = "ro-padding";
			reg = <0x00670840 0x0000f7c0>;
			read-only;
			type = "wiped";
			wipe-value = [ff];
		};
		ro-gbb {
			label = "gbb";

			/* GBB offset must be aligned to 4K bytes */
			reg = <0x00680000 0x00080000>; /* 512 KB */
			read-only;
			type = "blob gbb";
		};
		ro-boot {
			label = "boot-stub";
			reg = <0x00700000 0x00100000>; /* 1024 KB */
			read-only;
			type = "blob coreboot";
			required;
		};
	};
};