[coreboot] initrd in 4.4 versus head

[Trammell Hudson]

I see a difference in the way 4.4 handles initrd images for linux
payloads versus the way it is done in head.  With 4.4 my Linux
kernel can not find the external initrd, so it is necessary to
build it as part of the kernel.  With head it works fine.

It looks like 4.4 is adding the initrd as a separate section
named "(empty)" with type "null" and the kernel can't find it:

performing operation on 'COREBOOT' region...
Name                           Offset     Type         Size
cbfs master header             0x0        cbfs header  32
cpu_microcode_blob.bin         0x80       microcode    22528
cmos.default                   0x5900     cmos_default 256
cmos_layout.bin                0x5a40     cmos_layout  1948
fallback/dsdt.aml              0x6240     raw          13847
(empty)                        0x98c0     null         26264
fallback/romstage              0xff80     stage        74020
(empty)                        0x22140    null         56664
mrc.cache                      0x2fec0    mrc_cache    65536
fallback/ramstage              0x3ff00    stage        84790
fallback/payload               0x54a80    payload      1618769
(empty)                        0x1dfe40   null         2226328
bootblock                      0x3ff700   bootblock    1952

While in head it is bundling them together into the payload
region (3.9 MB == bzImage + initrd.img) -- the kernel can
find the image and use it:

Performing operation on 'COREBOOT' region...
Name                           Offset     Type         Size
cbfs master header             0x0        cbfs header  32
fallback/romstage              0x80       stage        14620
cpu_microcode_blob.bin         0x3a00     microcode    22528
fallback/ramstage              0x9280     stage        43781
cmos_layout.bin                0x13dc0    cmos_layout  1948
fallback/dsdt.aml              0x145c0    raw          4021
fallback/payload               0x155c0    payload      3906169
(empty)                        0x3cf080   null         199256
bootblock                      0x3ffb00   bootblock    960

I don't see any changes in the util/cbfstool/cbfs-payload-linux.c
file between these two versions.  Is there something else
that changed?

-- 
Trammell