[coreboot-gerrit] Patch merged into coreboot/master: x86/bootblock: Use LDFLAGS_bootblock to enable garbage collection

[gerrit at coreboot.org]

the following patch was just integrated into master:
commit 72bb66eb9cecf94b66a4aca3586165d5495fcfdb
Author: Alexandru Gagniuc <mr.nuke.me at gmail.com>
Date:   Fri Oct 2 10:59:13 2015 -0700

    x86/bootblock: Use LDFLAGS_bootblock to enable garbage collection
    
    The x86 bootblock linking is a mess. The bootblock is treated in
    a very special manner, and never received the update to link-time
    garbage collection.
    
    On newer x86 platforms, the boot media is no longer memory-mapped.
    That means we need to do a lot more setup in the bootblock. ROMCC is
    unsuitable for this task, and walkcbfs only works on memory-mapped
    CBFS. We need to revise the x86 bootflow for this new case.
    
    The approach this patch series takes is to perform CAR setup in the
    bootblock, and load the following stage (either romstage or verstage)
    from the boot media. This approach is not new, but has been done on
    our ARM ports for years.
    
    Since we will be adding .c files to the bootblock, it is prudent to
    use link-time garbage collection. This is also consistent to how we
    do things on other architectures. Unification FTW!
    
    Change-Id: I16b78456df56e0053984a9aca9367e2542adfdc9
    Signed-off-by: Alexandru Gagniuc <mr.nuke.me at gmail.com>
    Reviewed-on: http://review.coreboot.org/11781
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin <adurbin at chromium.org>


See http://review.coreboot.org/11781 for details.

-gerrit