| # Firmware Layout Description for ChromeOS. |
| # |
| # The size and address of every section must be aligned to at least 4K, except: |
| # RO_FRID, RW_FWID*, GBB, or any unused / padding / CBFS type sections. |
| # |
| # 'FMAP' may be found by binary search so its starting address should be better |
| # aligned to larger values. |
| # |
| # For sections to be preserved on update, add (PRESERVE) to individual sections |
| # instead of a group section; otherwise the preserved data may be wrong if you |
| # resize or reorder sections inside a group. |
| |
| FLASH@0x0 8M { |
| WP_RO@0x0 4M { |
| RO_SECTION { |
| BOOTBLOCK 128K |
| FMAP 4K |
| COREBOOT(CBFS) |
| GBB 0x2f00 |
| RO_FRID 0x100 |
| } |
| RO_GSCVD 8K |
| RO_VPD(PRESERVE) 32K # At least 16K. |
| } |
| RW_SECTION_A 1500K { |
| VBLOCK_A 8K |
| FW_MAIN_A(CBFS) |
| RW_FWID_A 0x100 |
| } |
| RW_MISC 36K { |
| RW_VPD(PRESERVE) 16K # At least 8K. |
| RW_NVRAM(PRESERVE) 8K |
| RW_MRC_CACHE(PRESERVE) 8K |
| RW_ELOG(PRESERVE) 4K # ELOG driver hard-coded size in 4K. |
| } |
| RW_SECTION_B 1500K { |
| VBLOCK_B 8K |
| FW_MAIN_B(CBFS) |
| RW_FWID_B 0x100 |
| } |
| RW_SHARED 36K { # Will be force updated on recovery. |
| SHARED_DATA 4K # 4K or less for netboot params. |
| RW_UNUSED |
| } |
| RW_LEGACY(CBFS) 1M # Minimal 1M. |
| } |
