Aaron Durbin (adurbin(a)chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11509
-gerrit
commit c45c3e98d4c0f134d4d59494fca65be336c43330
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Fri Sep 4 12:09:49 2015 -0500
linking: move romstage and bootblock to use program.ld
Instead of having separate <stage>.ld files in src/lib
one file can be used: program.ld. There's now only one
touch point for stage layout.
BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built a myriad of boards. Analyzed readelf output.
Change-Id: I4c3e3671d696caa2c7601065a85fab803e86f971
Signed-off-by: Aaron Durbin <adubin(a)chromium.org>
---
src/include/memlayout.h | 12 +++++-----
src/lib/Makefile.inc | 4 ++--
src/lib/bootblock.ld | 51 ---------------------------------------
src/lib/romstage.ld | 64 -------------------------------------------------
4 files changed, 8 insertions(+), 123 deletions(-)
diff --git a/src/include/memlayout.h b/src/include/memlayout.h
index 3b3ff6d..1a38256 100644
--- a/src/include/memlayout.h
+++ b/src/include/memlayout.h
@@ -103,24 +103,24 @@
#endif
/* Careful: 'INCLUDE <filename>' must always be at the end of the output line */
-#ifdef __BOOTBLOCK__
+#if ENV_BOOTBLOCK
#define BOOTBLOCK(addr, sz) \
SET_COUNTER(bootblock, addr) \
- _ = ASSERT(_ebootblock - _bootblock <= sz, \
+ _ = ASSERT(_eprogram - _program <= sz, \
STR(Bootblock exceeded its allotted size! (sz))); \
- INCLUDE "lib/bootblock.bootblock.ld"
+ INCLUDE "lib/program.bootblock.ld"
#else
#define BOOTBLOCK(addr, sz) \
SET_COUNTER(bootblock, addr) \
. += sz;
#endif
-#ifdef __ROMSTAGE__
+#if ENV_ROMSTAGE
#define ROMSTAGE(addr, sz) \
SET_COUNTER(romstage, addr) \
- _ = ASSERT(_eromstage - _romstage <= sz, \
+ _ = ASSERT(_eprogram - _program <= sz, \
STR(Romstage exceeded its allotted size! (sz))); \
- INCLUDE "lib/romstage.romstage.ld"
+ INCLUDE "lib/program.romstage.ld"
#else
#define ROMSTAGE(addr, sz) \
SET_COUNTER(romstage, addr) \
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index cd2b70a..4aa6bf8 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -194,8 +194,8 @@ secmon-y += halt.c
ifneq ($(CONFIG_ARCH_X86),y)
# X86 bootblock and romstage use custom ldscripts that are all glued together,
# so we need to exclude it here or it would pick these up as well
-bootblock-y += bootblock.ld
-romstage-y += romstage.ld
+bootblock-y += program.ld
+romstage-y += program.ld
endif
ramstage-y += program.ld
diff --git a/src/lib/bootblock.ld b/src/lib/bootblock.ld
deleted file mode 100644
index 42e6d64..0000000
--- a/src/lib/bootblock.ld
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2014 Google Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-/* This file is included inside a SECTIONS block */
-
-.bootblock . : {
- _program = .;
- _bootblock = .;
- *(.text._start);
- *(.text.stage_entry);
- KEEP(*(.id));
- *(.text);
- *(.text.*);
- *(.rodata);
- *(.rodata.*);
- *(.data);
- *(.data.*);
- *(.bss);
- *(.bss.*);
- *(.sbss);
- *(.sbss.*);
- _preram_cbmem_console = DEFINED(_preram_cbmem_console) ? _preram_cbmem_console : 0;
- _epreram_cbmem_console = DEFINED(_epreram_cbmem_console) ? _epreram_cbmem_console : 0;
- _ebootblock = .;
- _eprogram = .;
-} : to_load = 0xff
-
-/DISCARD/ : {
- *(.comment)
- *(.note)
- *(.comment.*)
- *(.note.*)
- *(.ARM.*)
- *(.MIPS.*)
-}
diff --git a/src/lib/romstage.ld b/src/lib/romstage.ld
deleted file mode 100644
index ba154ef..0000000
--- a/src/lib/romstage.ld
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2014 Google Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-/* This file is included inside a SECTIONS block */
-
-.text . : {
- _program = .;
- _romstage = .;
- *(.text._start);
- *(.text.stage_entry);
- *(.text);
- *(.text.*);
-} : to_load
-
-.data . : {
- . = ALIGN(8);
- _cbmem_init_hooks = .;
- KEEP(*(.rodata.cbmem_init_hooks));
- _ecbmem_init_hooks = .;
- *(.rodata);
- *(.rodata.*);
- *(.data);
- *(.data.*);
- PROVIDE(_preram_cbmem_console = .);
- PROVIDE(_epreram_cbmem_console = _preram_cbmem_console);
- . = ALIGN(8);
-}
-
-.bss . : {
- . = ALIGN(8);
- _bss = .;
- *(.bss)
- *(.bss.*)
- *(.sbss)
- *(.sbss.*)
- _ebss = .;
- _eromstage = .;
- _eprogram = .;
-}
-
-/* Discard the sections we don't need/want */
-/DISCARD/ : {
- *(.comment)
- *(.note)
- *(.comment.*)
- *(.note.*)
- *(.eh_frame);
-}
Aaron Durbin (adurbin(a)chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11508
-gerrit
commit afa48b6d72ecce7e4d1123fc116329327c54cb05
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Fri Sep 4 10:19:05 2015 -0500
x86: link ramstage like the other architectures
All the other architectures are using the memlayout
for linking ramstage. The last piece to align x86 is
to use arch/header.ld and the macros within memlayout.h
to automaticaly generate the necessary linker script.
BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built a myriad of boards. Analyzed readelf output.
Change-Id: I012c9b88c178b43bf6a6dde0bab821e066728139
Signed-off-by: Aaron Durbin <adubin(a)chromium.org>
---
src/arch/x86/include/arch/header.ld | 25 +++++++++++++++++++++++++
src/arch/x86/ramstage.ld | 24 +++---------------------
2 files changed, 28 insertions(+), 21 deletions(-)
diff --git a/src/arch/x86/include/arch/header.ld b/src/arch/x86/include/arch/header.ld
new file mode 100644
index 0000000..dd6cb27
--- /dev/null
+++ b/src/arch/x86/include/arch/header.ld
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+PHDRS
+{
+ to_load PT_LOAD;
+}
+
+ENTRY(_start)
diff --git a/src/arch/x86/ramstage.ld b/src/arch/x86/ramstage.ld
index c9b2f17..0d329db 100644
--- a/src/arch/x86/ramstage.ld
+++ b/src/arch/x86/ramstage.ld
@@ -1,25 +1,7 @@
-/*
- * Memory map:
- *
- * CONFIG_RAMBASE : text segment
- * : rodata segment
- * : data segment
- * : bss segment
- * : stack
- * : heap
- */
-ENTRY(_start)
-
-PHDRS
-{
- to_load PT_LOAD;
-}
+#include <memlayout.h>
+#include <arch/header.ld>
SECTIONS
{
- . = CONFIG_RAMBASE;
-
- INCLUDE "lib/program.ramstage.ld"
-
- _ = ASSERT( ( _eprogram < (CONFIG_RAMTOP)) , "Please increase CONFIG_RAMTOP");
+ RAMSTAGE(CONFIG_RAMBASE, CONFIG_RAMTOP - CONFIG_RAMBASE)
}
the following patch was just integrated into master:
commit 4d3de7e328fd92498fd7cf149a0aa887e33f8dfd
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Wed Sep 2 17:34:04 2015 -0500
bootstate: remove need for #ifdef ENV_RAMSTAGE
The BOOT_STATE_INIT_ENTRY macro can only be used in ramstage, however
the current state of the header meant bad build errors in non-ramstage.
Therefore, people had to #ifdef in the source. Remove that requirement.
Change-Id: I8755fc68bbaca6b72fbe8b4db4bcc1ccb35622bd
Signed-off-by: Aaron Durbin <adurbin(a)chromium.org>
Reviewed-on: http://review.coreboot.org/11492
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth(a)google.com>
See http://review.coreboot.org/11492 for details.
-gerrit
Aaron Durbin (adurbin(a)chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11503
-gerrit
commit 92d035f90c90ac6948705143513bdae076c22e75
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Thu Sep 3 11:01:17 2015 -0500
x86: don't create MAINBOARDDIR/romstage.inc for !ROMCC boards
Previously, the x86 romstage build process was unconditionally
creating a romstage.inc and adding it to crt0s. This step is
inherently not necessary in the !ROMCC case becaue the romstage.inc
was created by the compiler outputting assembler. That means
MAINBOARDDIR/romstage.c is truly a C environment that requires
some sort of assembler stub to call into (cache_as_ram.inc from
the chipset dirs). Therefore, remove this processing. The result
is that MAINBOARDDIR/romstage.c can use the normal build steps
in creating an object and linking. The layout of romstage.elf
will change but that's only from a symbol perspective.
BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built multitude of boards. Compared readelf -e output.
Change-Id: I9b8079caaaa55e3ae20d3db4c9b8be04cdc41ab7
Signed-off-by: Aaron Durbin <adurbin(a)chromium.org>
---
src/arch/x86/Makefile.inc | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index cf69868..8d07603 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -125,13 +125,19 @@ endif
crt0s += $(cpu_incs-y)
-crt0s += $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc
+ifneq ($(CONFIG_ROMCC),y)
+
+romstage-srcs += $(src)/mainboard/$(MAINBOARDDIR)/romstage.c
-ifeq ($(CONFIG_ROMCC),y)
+else # CONFIG_ROMCC == y
+
+# This order matters. The mainboards requiring ROMCC need their mainboard
+# code to follow the prior crt0s files for program flow control. The
+# romstage.inc from the MAINBOARDDIR is implicitly main() for romstage
+# because of the instruction sequen fall-through.
+crt0s += $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc
crt0s += $(src)/arch/x86/crt0_romcc_epilogue.inc
-endif
-ifeq ($(CONFIG_ROMCC),y)
ifeq ($(CONFIG_MMX),y)
ifeq ($(CONFIG_SSE),y)
ROMCCFLAGS := -mcpu=p4 -O2 # MMX, SSE
@@ -156,17 +162,7 @@ $(objcbfs)/romstage%.elf: $(objcbfs)/romstage%.debug
$(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(src)/mainboard/$(MAINBOARDDIR)/romstage.c $(objutil)/romcc/romcc $(OPTION_TABLE_H) $(obj)/build.h $(obj)/config.h
printf " ROMCC romstage.inc\n"
$(ROMCC) -c -S $(ROMCCFLAGS) -D__ROMSTAGE__ -D__PRE_RAM__ -I. $(CPPFLAGS_romstage) $< -o $@
-else
-$(obj)/mainboard/$(MAINBOARDDIR)/romstage.pre.inc: $(src)/mainboard/$(MAINBOARDDIR)/romstage.c $(OPTION_TABLE_H) $(obj)/build.h $(obj)/config.h
- @printf " CC romstage.inc\n"
- $(CC_romstage) $(CPPFLAGS_romstage) $(CFLAGS_romstage) -MMD -D__ROMSTAGE__ -D__PRE_RAM__ -I$(src) -I. -I$(obj) -c -S $< -o $@
-
-$(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(obj)/mainboard/$(MAINBOARDDIR)/romstage.pre.inc
- @printf " POST romstage.inc\n"
- sed -e 's/\.rodata/.rom.data/g' -e 's/\^\.text/.section .rom.text/g' \
- -e 's/\^\.section \.text/.section .rom.text/g' $^ > $@.tmp
- mv $@.tmp $@
endif
romstage-srcs += $(objgenerated)/crt0.S
Aaron Durbin (adurbin(a)chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11507
-gerrit
commit ead7ba5d3c170d0d54f939cb2a5bc2ad9d3f06b0
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Thu Sep 3 22:49:36 2015 -0500
linking: lay the groundwork for a unified linking approach
Though coreboot started as x86 only, the current approach to x86
linking is out of the norm with respect to other architectures.
To start alleviating that the way ramstage is linked is partially
unified. A new file, program.ld, was added to provide a common way
to link stages by deferring to per-stage architectural overrides.
The previous ramstage.ld is no longer required.
Note that this change doesn't handle RELOCATABLE_RAMSTAGE
because that is handled by rmodule.ld. Future convergence
can be achieved, but for the time being that's being left out.
BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built a myriad of boards.
Change-Id: I5d689bfa7e0e9aff3a148178515ef241b5f70661
Signed-off-by: Aaron Durbin <adubin(a)chromium.org>
---
src/arch/x86/Makefile.inc | 2 +-
src/arch/x86/include/arch/memlayout.h | 25 +++++++
src/arch/x86/ramstage.ld | 2 +-
src/include/memlayout.h | 126 ++++++++++++++++++++++++++++++++--
src/lib/Makefile.inc | 3 +-
src/lib/program.ld | 67 ++++++++++++++++++
src/lib/ramstage.ld | 115 -------------------------------
7 files changed, 218 insertions(+), 122 deletions(-)
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 8311b11..23a24f2 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -289,7 +289,7 @@ $(objcbfs)/ramstage.elf: $(objcbfs)/ramstage.debug.rmod
else
-ramstage-srcs += $(src)/arch/x86/ramstage.ld
+ramstage-y += ramstage.ld
$(objcbfs)/ramstage.debug: $(objgenerated)/ramstage.o $(obj)/arch/x86/ramstage.ramstage.ld
@printf " CC $(subst $(obj)/,,$(@))\n"
diff --git a/src/arch/x86/include/arch/memlayout.h b/src/arch/x86/include/arch/memlayout.h
new file mode 100644
index 0000000..54b8b4a
--- /dev/null
+++ b/src/arch/x86/include/arch/memlayout.h
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#ifndef __ARCH_MEMLAYOUT_H
+#define __ARCH_MEMLAYOUT_H
+
+/* Currently empty to satisfy common arch requirements. */
+
+#endif /* __ARCH_MEMLAYOUT_H */
diff --git a/src/arch/x86/ramstage.ld b/src/arch/x86/ramstage.ld
index 5fcbbb6..c9b2f17 100644
--- a/src/arch/x86/ramstage.ld
+++ b/src/arch/x86/ramstage.ld
@@ -19,7 +19,7 @@ SECTIONS
{
. = CONFIG_RAMBASE;
- INCLUDE "lib/ramstage.ramstage.ld"
+ INCLUDE "lib/program.ramstage.ld"
_ = ASSERT( ( _eprogram < (CONFIG_RAMTOP)) , "Please increase CONFIG_RAMTOP");
}
diff --git a/src/include/memlayout.h b/src/include/memlayout.h
index a529628..3b3ff6d 100644
--- a/src/include/memlayout.h
+++ b/src/include/memlayout.h
@@ -22,10 +22,41 @@
#ifndef __MEMLAYOUT_H
#define __MEMLAYOUT_H
+#include <rules.h>
#include <arch/memlayout.h>
+/* Macros that the architecture can override. */
+#ifndef ARCH_POINTER_ALIGN_SIZE
+#define ARCH_POINTER_ALIGN_SIZE 8
+#endif
+
+#ifndef ARCH_CACHELINE_ALIGN_SIZE
+#define ARCH_CACHELINE_ALIGN_SIZE 64
+#endif
+
+#ifndef ARCH_FIRST_TEXT
+#define ARCH_FIRST_TEXT
+#endif
+
+/* Default to data as well as bss. */
+#ifndef ARCH_STAGE_HAS_DATA_SECTION
+#define ARCH_STAGE_HAS_DATA_SECTION 1
+#endif
+
+#ifndef ARCH_STAGE_HAS_BSS_SECTION
+#define ARCH_STAGE_HAS_BSS_SECTION 1
+#endif
+
+/* Default is that currently ramstage and smm only has a heap. */
+#ifndef ARCH_STAGE_HAS_HEAP_SECTION
+#define ARCH_STAGE_HAS_HEAP_SECTION (ENV_RAMSTAGE || ENV_SMM)
+#endif
+
#define STR(x) #x
+#define ALIGN_COUNTER(align) \
+ . = ALIGN(align);
+
#define SET_COUNTER(name, addr) \
_ = ASSERT(. <= addr, STR(name overlaps the previous region!)); \
. = addr;
@@ -34,6 +65,9 @@
SET_COUNTER(name, addr) \
_##name = .;
+#define SYMBOL_CURRENT_LOC(name) \
+ _##name = .;
+
#define REGION(name, addr, size, expected_align) \
SYMBOL(name, addr) \
_ = ASSERT(. == ALIGN(expected_align), \
@@ -58,7 +92,7 @@
/* TODO: This only works if you never access CBFS in romstage before RAM is up!
* If you need to change that assumption, you have some work ahead of you... */
-#if defined(__PRE_RAM__) && !defined(__ROMSTAGE__)
+#if defined(__PRE_RAM__) && !ENV_ROMSTAGE
#define PRERAM_CBFS_CACHE(addr, size) CBFS_CACHE(addr, size)
#define POSTRAM_CBFS_CACHE(addr, size) \
REGION(unused_cbfs_cache, addr, size, 4)
@@ -93,16 +127,100 @@
. += sz;
#endif
-#ifdef __RAMSTAGE__
+#if ENV_RAMSTAGE
#define RAMSTAGE(addr, sz) \
SET_COUNTER(ramstage, addr) \
- _ = ASSERT(_eramstage - _ramstage <= sz, \
+ _ = ASSERT(_eprogram - _program <= sz, \
STR(Ramstage exceeded its allotted size! (sz))); \
- INCLUDE "lib/ramstage.ramstage.ld"
+ INCLUDE "lib/program.ramstage.ld"
#else
#define RAMSTAGE(addr, sz) \
SET_COUNTER(ramstage, addr) \
. += sz;
#endif
+#if ENV_RAMSTAGE || ENV_ROMSTAGE
+#define CBMEM_INIT_HOOKS \
+ POINTER_ALIGN \
+ SYMBOL_CURRENT_LOC(cbmem_init_hooks) \
+ KEEP(*(.rodata.cbmem_init_hooks)); \
+ SYMBOL_CURRENT_LOC(ecbmem_init_hooks)
+#else
+#define CBMEM_INIT_HOOKS
+#endif
+
+#if ENV_RAMSTAGE
+#define DRIVERS_RODATA \
+ POINTER_ALIGN \
+ SYMBOL_CURRENT_LOC(pci_drivers) \
+ KEEP(*(.rodata.pci_driver)); \
+ SYMBOL_CURRENT_LOC(epci_drivers) \
+ POINTER_ALIGN \
+ SYMBOL_CURRENT_LOC(cpu_drivers) \
+ KEEP(*(.rodata.cpu_driver)); \
+ SYMBOL_CURRENT_LOC(ecpu_drivers)
+#else
+#define DRIVERS_RODATA
+#endif
+
+#define BEGIN_SECTION(name, align) \
+ .##name : { \
+ ALIGN_COUNTER(align) \
+ SYMBOL_CURRENT_LOC(name)
+
+#define END_SECTION(name, align) \
+ ALIGN_COUNTER(align) \
+ SYMBOL_CURRENT_LOC(e##name) \
+ }
+
+#if ARCH_STAGE_HAS_DATA_SECTION
+#ifdef __PRE_RAM__
+/* Provide these symbols in PRE_RAM environments if not already provided. */
+#define DATA_EXTRA \
+ PROVIDE(_preram_cbmem_console = .); \
+ PROVIDE(_epreram_cbmem_console = _preram_cbmem_console);
+#elif ENV_RAMSTAGE
+#define DATA_EXTRA \
+ SYMBOL_CURRENT_LOC(bs_init_begin) \
+ KEEP(*(.bs_init)); \
+ LONG(0); \
+ LONG(0); \
+ SYMBOL_CURRENT_LOC(ebs_init_begin)
+#else
+#define DATA_EXTRA
+#endif
+
+#define DATA_SECTION \
+ BEGIN_SECTION(data, ARCH_CACHELINE_ALIGN_SIZE) \
+ *(.data); \
+ *(.data.*); \
+ DATA_EXTRA \
+ END_SECTION(data, ARCH_POINTER_ALIGN_SIZE)
+#else
+#define DATA_SECTION
+#endif
+
+#if ARCH_STAGE_HAS_BSS_SECTION
+#define BSS_SECTION \
+ BEGIN_SECTION(bss, ARCH_POINTER_ALIGN_SIZE) \
+ *(.bss) \
+ *(.bss.*) \
+ *(.sbss) \
+ *(.sbss.*) \
+ END_SECTION(bss, ARCH_POINTER_ALIGN_SIZE)
+#else
+#define BSS_SECTION
+#endif
+
+#if ARCH_STAGE_HAS_HEAP_SECTION
+#define HEAP_SECTION \
+ BEGIN_SECTION(heap, ARCH_POINTER_ALIGN_SIZE) \
+ . += CONFIG_HEAP_SIZE ; \
+ END_SECTION(heap, ARCH_POINTER_ALIGN_SIZE)
+#else
+#define HEAP_SECTION
+#endif
+
+#define POINTER_ALIGN ALIGN_COUNTER(ARCH_POINTER_ALIGN_SIZE)
+
#endif /* __MEMLAYOUT_H */
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 8597667..cd2b70a 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -197,7 +197,8 @@ ifneq ($(CONFIG_ARCH_X86),y)
bootblock-y += bootblock.ld
romstage-y += romstage.ld
endif
-ramstage-y += ramstage.ld
+
+ramstage-y += program.ld
ifeq ($(CONFIG_RELOCATABLE_MODULES),y)
ramstage-y += rmodule.c
diff --git a/src/lib/program.ld b/src/lib/program.ld
new file mode 100644
index 0000000..4900d3e
--- /dev/null
+++ b/src/lib/program.ld
@@ -0,0 +1,67 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <memlayout.h>
+
+/* This file is included inside a SECTIONS block */
+
+/* First we place the code and read only data (typically const declared).
+ * This could theoretically be placed in rom.
+ */
+BEGIN_SECTION(text, 1)
+ SYMBOL_CURRENT_LOC(program)
+ ARCH_FIRST_TEXT
+ *(.text._start);
+ *(.text.stage_entry);
+ *(.text);
+ *(.text.*);
+ POINTER_ALIGN
+ CBMEM_INIT_HOOKS
+ DRIVERS_RODATA
+ *(.rodata);
+ *(.rodata.*);
+ POINTER_ALIGN
+ SYMBOL_CURRENT_LOC(etext)
+END_SECTION(text, 1) : to_load
+
+#if ENV_RAMSTAGE && IS_ENABLED(CONFIG_COVERAGE)
+BEGIN_SECTION(ctors, 0x100)
+ SYMBOL_CURRENT_LOC(__CTOR_LIST__)
+ KEEP(*(.ctors));
+ LONG(0);
+ LONG(0);
+ SYMBOL_CURRENT_LOC(__CTOR_END__)
+END_SECTION(ctors, 1)
+#endif
+
+/* Include data, bss, and heap in that order. Not defined for all stages. */
+DATA_SECTION
+BSS_SECTION
+HEAP_SECTION
+SYMBOL_CURRENT_LOC(eprogram)
+
+/* Discard the sections we don't need/want */
+
+/DISCARD/ : {
+ *(.comment)
+ *(.comment.*)
+ *(.note)
+ *(.note.*)
+ *(.eh_frame);
+}
diff --git a/src/lib/ramstage.ld b/src/lib/ramstage.ld
deleted file mode 100644
index 432df40..0000000
--- a/src/lib/ramstage.ld
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2014 Google Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-/* This file is included inside a SECTIONS block */
-
-/* First we place the code and read only data (typically const declared).
- * This could theoretically be placed in rom.
- */
-.text : {
- _program = .;
- _ramstage = .;
- _text = .;
- *(.text._start);
- *(.text.stage_entry);
- *(.text);
- *(.text.*);
- . = ALIGN(16);
- _etext = .;
-} : to_load
-
-#if IS_ENABLED(CONFIG_COVERAGE)
-.ctors : {
- . = ALIGN(0x100);
- __CTOR_LIST__ = .;
- KEEP(*(.ctors));
- LONG(0);
- LONG(0);
- __CTOR_END__ = .;
-}
-#endif
-
-/* TODO: align data sections to cache lines? (is that really useful?) */
-.rodata : {
- _rodata = .;
- . = ALIGN(8);
-
- /* If any changes are made to the driver start/symbols or the
- * section names the equivalent changes need to made to
- * rmodule.ld. */
- pci_drivers = . ;
- KEEP(*(.rodata.pci_driver));
- epci_drivers = . ;
- cpu_drivers = . ;
- KEEP(*(.rodata.cpu_driver));
- ecpu_drivers = . ;
- _bs_init_begin = .;
- KEEP(*(.bs_init));
- LONG(0);
- LONG(0);
- _bs_init_end = .;
- _cbmem_init_hooks = .;
- KEEP(*(.rodata.cbmem_init_hooks));
- _ecbmem_init_hooks = .;
-
- *(.rodata)
- *(.rodata.*)
- /* kevinh/Ispiri - Added an align, because the objcopy tool
- * incorrectly converts sections that are not long word aligned.
- */
- . = ALIGN(8);
-
- _erodata = .;
-}
-
-.data : {
- /* Move to different cache line to avoid false sharing with .rodata. */
- . = ALIGN(64); /* May not be actual line size, not that important. */
- _data = .;
- *(.data)
- *(.data.*)
- _edata = .;
-}
-
-.bss . : {
- _bss = .;
- *(.bss)
- *(.bss.*)
- *(.sbss)
- *(.sbss.*)
- _ebss = .;
-}
-
-.heap . : {
- _heap = .;
- /* Reserve CONFIG_HEAP_SIZE bytes for the heap */
- . += CONFIG_HEAP_SIZE ;
- . = ALIGN(4);
- _eheap = .;
- _eramstage = .;
- _eprogram = .;
-}
-
-/* Discard the sections we don't need/want */
-
-/DISCARD/ : {
- *(.comment)
- *(.note)
- *(.note.*)
-}
Aaron Durbin (adurbin(a)chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11505
-gerrit
commit 0801d5b5e983aecfe3e754bc8164d1bd24e2dbbe
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Thu Sep 3 14:39:39 2015 -0500
x86: remove unused sections from romstage.ld
Now that the only source of ELF sections for romstage are
from directly included .inc files or ROMCC generated inc
files the subsection globs can be removed. i.e. Remove
.rom.data.* and .rom.text.* listings. Lastly, put the
.rom.data section directly after the .rom.text. They
are by definition read-only and they are generated from
the same place.
BUG=chrome-os-partner:44827
BRANCH=None
TEST=Spot checked !ROMCC and ROMCC boards. Confirmed
only .rom.text .rom.data sections exist.
Change-Id: Id17cf95c943103de006c5f3f21a625838ab49929
Signed-off-by: Aaron Durbin <adubin(a)chromium.org>
---
src/arch/x86/romstage.ld | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/src/arch/x86/romstage.ld b/src/arch/x86/romstage.ld
index 951ca65..cc0142e 100644
--- a/src/arch/x86/romstage.ld
+++ b/src/arch/x86/romstage.ld
@@ -26,17 +26,15 @@ SECTIONS
.rom . : {
_rom = .;
*(.rom.text);
- *(.rom.text.*);
+ *(.rom.data);
*(.text);
*(.text.*);
- *(.rom.data);
. = ALIGN(4);
_cbmem_init_hooks = .;
KEEP(*(.rodata.cbmem_init_hooks));
_ecbmem_init_hooks = .;
*(.rodata);
*(.rodata.*);
- *(.rom.data.*);
. = ALIGN(16);
_erom = .;
}
Aaron Durbin (adurbin(a)chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11504
-gerrit
commit 87ce5eecaf674240778aba12142ae2b306d2c45f
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Thu Sep 3 11:29:28 2015 -0500
x86: add rosmtage.S to bind program flow and ordering
The build system was previously determining the flow
of the romstage code by the order of files added to
the crt0s make variable. Those files were then
concatenated together, and the resulting file was added
to the build dependencies for romstage proper.
Now romstage.S is added that can be built using
the default object file rules. The generated
romstage.inc is pulled in by way of an #include in the
newly added romstage.S.
BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built vortex, rambi, and some asus boards. compared
readelf -e output.
Change-Id: Ib1168f9541eaf96651c52d03dc0f60e2489a77bd
Signed-off-by: Aaron Durbin <adurbin(a)chromium.org>
---
src/arch/x86/Makefile.inc | 26 +++++++++++++-------------
src/arch/x86/romstage.S | 37 +++++++++++++++++++++++++++++++++++++
2 files changed, 50 insertions(+), 13 deletions(-)
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 8d07603..8311b11 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -113,17 +113,23 @@ endif # CONFIG_ARCH_BOOTBLOCK_X86_32 / CONFIG_ARCH_BOOTBLOCK_X86_64
ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32)$(CONFIG_ARCH_ROMSTAGE_X86_64),y)
-crt0s = $(src)/arch/x86/prologue.inc
romstage-srcs += $(src)/arch/x86/romstage.ld
-crt0s += $(src)/cpu/x86/32bit/entry32.inc
romstage-srcs += $(src)/cpu/x86/32bit/entry32.ld
-crt0s += $(src)/cpu/x86/fpu_enable.inc
-ifeq ($(CONFIG_SSE),y)
-crt0s += $(src)/cpu/x86/sse_enable.inc
-endif
+# Chipset specific assembly stubs in the romstage program flow. Certain
+# boards have more than one assembly stub so collect those and put them
+# into a single generated file.
+crt0s = $(cpu_incs-y)
+
+$(objgenerated)/romstage.inc: $$(crt0s)
+ @printf " GEN $(subst $(obj)/,,$(@))\n"
+ printf '$(foreach crt0,$(crt0s),#include "$(crt0)"\n)' > $@
-crt0s += $(cpu_incs-y)
+# Add the assembly file that pulls in the rest of the dependencies in
+# the right order. Make sure the auto generated romstage.inc is a proper
+# dependency.
+romstage-y += romstage.S
+$(obj)/arch/x86/romstage.romstage.o: $(objgenerated)/romstage.inc
ifneq ($(CONFIG_ROMCC),y)
@@ -165,8 +171,6 @@ $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(src)/mainboard/$(MAINBOARDDIR)/
endif
-romstage-srcs += $(objgenerated)/crt0.S
-
romstage-libs ?=
ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32),y)
@@ -209,10 +213,6 @@ $(objcbfs)/base_xip.txt: $(obj)/coreboot.pre1 $(objcbfs)/romstage_null.bin
|| { echo "The romstage is larger than XIP size. Please expand the CONFIG_XIP_ROM_SIZE" ; exit 1; }
mv $@.tmp $@
-$(objgenerated)/crt0.S: $$(crt0s)
- @printf " GEN $(subst $(obj)/,,$(@))\n"
- printf '$(foreach crt0,$(crt0s),#include "$(crt0)"\n)' > $@
-
# Compiling crt0 with -g seems to trigger https://sourceware.org/bugzilla/show_bug.cgi?id=6428
romstage-S-ccopts += -I. -g0
diff --git a/src/arch/x86/romstage.S b/src/arch/x86/romstage.S
new file mode 100644
index 0000000..eb07675
--- /dev/null
+++ b/src/arch/x86/romstage.S
@@ -0,0 +1,37 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+/* This file assembles the start of the romstage program by the order of the
+ * includes. Thus, it's extremely important that one pays very careful
+ *attention to the order of the includes. */
+
+#include <arch/x86/prologue.inc>
+#include <cpu/x86/32bit/entry32.inc>
+#include <cpu/x86/fpu_enable.inc>
+#if IS_ENABLED(CONFIG_SSE)
+#include <cpu/x86/sse_enable.inc>
+#endif
+
+/*
+ * The romstage.inc is generated based on the requirements the mainboard.
+ * For example, for ROMCC boards the MAINBOARDDIR/romstage.c would be
+ * processed by ROMCC and added. In non-ROMCC boards the chipsets'
+ * cache-as-ram setup files would be here.
+ */
+#include <generated/romstage.inc>