Patch set updated for coreboot: a7a9bcf arm64: ensure vital sections aren't garbage collected

[Marc Jones]

Marc Jones ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8584

-gerrit

commit a7a9bcf3f822362b61278f2df4d232a21001fd01
Author: Aaron Durbin 
Date:   Thu Jul 10 12:32:17 2014 -0500

arm64: ensure vital sections aren't garbage collected

The driver structures live in special sections which have no
    direct reference to the symbols. Therefore, when garbage
    collecting sections in the linker the drivers are tossed out
    resulting in no drivers being linked into ramstage. Fix this
    by adding the KEEP() directive to those special sections.

BUG=chrome-os-partner:29923
    BRANCH=None
    TEST=Built and noted console starts working in ramstage.

Original-Change-Id: Iaa0fd428bf975c82d4e6b0e75a17e6fd231fbaa9
    Original-Signed-off-by: Aaron Durbin 
    Original-Reviewed-on: https://chromium-review.googlesource.com/207261
    Original-Reviewed-by: Stefan Reinauer 
    Original-Reviewed-by: Furquan Shaikh 
    (cherry picked from commit 7c1a3e63e398755de0c77524a0483e6f1019aac0)
    Signed-off-by: Marc Jones

Change-Id: I1e30e73be754ec849cb3cfac3bcb12e95b0f60d4
---
 src/arch/arm64/ramstage.ld | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/arch/arm64/ramstage.ld b/src/arch/arm64/ramstage.ld
index e878820..5dc55ba 100644
--- a/src/arch/arm64/ramstage.ld
+++ b/src/arch/arm64/ramstage.ld
@@ -49,7 +49,7 @@ SECTIONS
    .ctors : {
    	. = ALIGN(0x100);
    	__CTOR_LIST__ = .;
-		*(.ctors);
+		KEEP(*(.ctors));
    	LONG(0);
    	__CTOR_END__ = .;
    }
@@ -58,17 +58,17 @@ SECTIONS
    	_rodata = .;
    	. = ALIGN(4);
    	console_drivers = .;
-		*(.rodata.console_drivers)
+		KEEP(*(.rodata.console_drivers));
    	econsole_drivers = . ;
    	. = ALIGN(4);
    	pci_drivers = . ;
-		*(.rodata.pci_driver)
+		KEEP(*(.rodata.pci_driver));
    	epci_drivers = . ;
    	cpu_drivers = . ;
-		*(.rodata.cpu_driver)
+		KEEP(*(.rodata.cpu_driver));
    	ecpu_drivers = . ;
    	_bs_init_begin = .;
-		*(.bs_init)
+		KEEP(*(.bs_init));
    	_bs_init_end = .;
    	*(.rodata)
    	*(.rodata.*)