[coreboot] Re: How to measure the differents parts of coreboot?

[Jorge Fernandez Monteagudo]

Hi Michal!
> You need to reserve some CMOS memory for vboot context, set default
> vboot configuration in Kconfig of your platform and prepare a flashmap
> layout file (*.fmd) - its the simplest case. Additionally you should
> have at least one RW slot by selecting CONFIG_VBOOT_SLOTS_RW_A.

Could you please advise how to implement the flashmap layout file to reserve
space for the RW partition? When coreboot rom is compile without VBOOT
I get the next info:

Name                           Offset     Type           Size   Comp
cbfs master header             0x0        cbfs header        32 none
fallback/romstage              0x80       stage           32260 none
fallback/ramstage              0x7f00     stage           64238 none
cmos_layout.bin                0x17a40    cmos_layout      1516 none
fallback/dsdt.aml              0x18080    raw              6656 none
(empty)                        0x19b00    null            25240 none
apu/amdfw                      0x1fdc0    raw            560128 none
pci1002,9874.rom               0xa8a00    optionrom       64512 none
fallback/payload               0xb8680    simple elf    2627296 none
(empty)                        0x339dc0   null          2908120 none
AGESA                          0x5ffdc0   raw            690436 none
(empty)                        0x6a8740   null          1405592 none
bootblock                      0x7ffa00   bootblock         944 none

and the default fmd map:

# layout for firmware residing at top of 4GB address space
# +-------------+ <-- 4GB - ROM_SIZE / start of flash
# | unspecified |
# +-------------+ <-- 4GB - BIOS_SIZE
# | FMAP        |
# +-------------+ <-- 4GB - BIOS_SIZE + FMAP_SIZE
# | CBFS        |
# +-------------+ <-- 4GB / end of flash

FLASH@4286578688 0x800000 {
        BIOS@0 8388608 {
                FMAP@0 0x200
                COREBOOT(CBFS)@512 8388096
        }
}

Thanks!
Jorge