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/*
* 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.
*/
/*
* This is a sub-fmap embedded into twostop fmap. This sub-fmap defines
* the layout of the R/O portion.
*
* The R/O blobs only consumes 1 MB space so that it could be possible to
* squeeze the final image (R/O + R/W) into 2 MB space. As a result, even if
* the target machine has a 4 MB flash chip and enables write-protect for the
* first 2 MB space, only the first 1 MB will contain R/O blobs and the rest
* 1 MB will be empty.
*/
/ {
/*
* Labels have been selected to be to compatible with existing tools,
* even thought the terminology may be a little different on ARM.
* Names will be capitalized and hyphen converted to underscore by
* cros_bundle_firmware.
*/
flash@0 {
/* ---- Section: Read-only ---- */
ro-section@0 {
label = "ro-section";
reg = <0x00000000 0x000f0000>;
read-only;
};
ro-boot@0 {
label = "boot-stub";
reg = <0x00000000 0x000aff00>; /* 703 KB */
read-only;
type = "blob signed";
};
ro-recovery@aff00 {
/* Deprecated section */
label = "recovery";
reg = <0x000aff00 0x00000000>;
read-only;
};
ro-firmware-id@aff00 {
label = "ro-frid";
reg = <0x000aff00 0x00000100>;
read-only;
type = "blobstring fwid";
};
ro-fmap@b0000 {
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 = <0x000b0000 0x00001000>;
read-only;
type = "fmap";
ver-major = <1>;
ver-minor = <0>;
};
ro-gbb@b1000 {
label = "gbb";
/* GBB offset must be aligned to 4K bytes */
reg = <0x000b1000 0x0003f000>;
read-only;
type = "blob gbb";
};
ro-data@f0000 {
/* Currently unused, simply for padding */
label = "ro-data";
reg = <0x000f0000 0x00000000>;
read-only;
};
/* ---- Section: Vital-product data (VPD) ---- */
ro-vpd@f0000 {
label = "ro-vpd";
/* VPD offset must be aligned to 4K bytes */
reg = <0x000f0000 0x00010000>;
read-only;
type = "wiped";
wipe-value = [ff];
};
};
};
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