xref: /aosp_15_r20/external/coreboot/src/mainboard/google/octopus/chromeos.fmd (revision b9411a12aaaa7e1e6a6fb7c5e057f44ee179a49c)
1FLASH 16M {
2	WP_RO@0x0 0x400000 {
3		SI_DESC@0x0 0x1000
4		IFWI@0x1000 0x1ff000
5		RO_VPD(PRESERVE)@0x200000 0x4000
6		RO_SECTION@0x204000 0x1fc000 {
7			FMAP@0x0 0x800
8			RO_FRID@0x800 0x40
9			RO_FRID_PAD@0x840 0x7c0
10			COREBOOT(CBFS)@0x1000 0x1f8000
11			GBB@0x1f9000 0x3000
12		}
13	}
14	MISC_RW@0x400000 0x30000 {
15		RW_PRESERVE(PRESERVE) {
16			UNIFIED_MRC_CACHE@0x0 0x21000 {
17				RECOVERY_MRC_CACHE@0x0 0x10000
18				RW_MRC_CACHE@0x10000 0x10000
19				RW_VAR_MRC_CACHE@0x20000 0x1000
20			}
21		}
22		RW_ELOG(PRESERVE)@0x21000 0x3000
23		RW_SHARED@0x24000 0x4000 {
24			SHARED_DATA@0x0 0x2000
25			VBLOCK_DEV@0x2000 0x2000
26		}
27		RW_VPD(PRESERVE)@0x28000 0x2000
28		RW_NVRAM(PRESERVE)@0x2a000 0x5000
29		FPF_STATUS@0x2f000 0x1000
30	}
31	RW_SECTION_A@0x430000 0x480000 {
32		VBLOCK_A@0x0 0x10000
33		FW_MAIN_A(CBFS)@0x10000 0x46ffc0
34		RW_FWID_A@0x47ffc0 0x40
35	}
36	RW_SECTION_B@0x8b0000 0x480000 {
37		VBLOCK_B@0x0 0x10000
38		FW_MAIN_B(CBFS)@0x10000 0x46ffc0
39		RW_FWID_B@0x47ffc0 0x40
40	}
41	SMMSTORE(PRESERVE)@0xd30000 0x40000
42	RW_LEGACY(CBFS)@0xd70000 0x1c0000
43	BIOS_UNUSABLE@0xf30000 0x4f000
44	DEVICE_EXTENSION@0xf7f000 0x80000
45	# Currently, it is required that the BIOS region be a multiple of 8KiB.
46	# This is required so that the recovery mechanism can find SIGN_CSE
47	# region aligned to 4K at the center of BIOS region. Since the
48	# descriptor at the beginning uses 4K and BIOS starts at an offset of
49	# 4K, a hole of 4K is created towards the end of the flash to compensate
50	# for the size requirement of BIOS region.
51	# FIT tool thus creates descriptor with following regions:
52	# Descriptor --> 0 to 4K
53	# BIOS       --> 4K to 0xf7f000
54	# Device ext --> 0xf7f000 to 0xfff000
55	UNUSED_HOLE@0xfff000 0x1000
56}
57