NetCube-Systems-Austria/kumquat-buildroot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xtensa: support configurable processor configurations

Browse Source 
Xtensa is a configurable processor architecture, which allows to define
additional instructions and registers. The required variant specific
information for the toolchain is delivered in an 'overlay' file, which
needs to be 'untarred' to the corresponding directories after the
source is installed and patched.
This patch provides support for binutils, gcc, and gdb with a very
limited changes to the build scripts. These additions are only executed
for the Xtensa architecture and have no effect on other architectures.

[Thomas: rebased on top of the 'arch: improve definition of gcc mtune,
mcpu, etc.' patch, and changed 'Target ABI' to 'Target Architecture
Variant'].

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Chris Zankel 2012-11-15 03:53:52 +00:00 committed by Peter Korsgaard
parent 75720db391
commit d8792a04ca
4 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
arch/Config.in.xtensa
View File

@ -1,2 +1,33 @@
choice
prompt "Target Architecture Variant"
depends on BR2_xtensa
default BR2_xtensa_fsf
config BR2_xtensa_custom
bool "Custom Xtensa processor configuration"
config BR2_xtensa_fsf
bool "fsf - Default configuration"
endchoice
config BR2_xtensa_custom_name
string "Custom Xtensa processor configuration anme"
depends on BR2_xtensa_custom
default ""
help
Name given to a custom Xtensa processor configuration.
config BR2_xtensa_core_name
string
default BR2_xtensa_custom_name if BR2_xtensa_custom
default "" if BR2_xtensa_fsf
config BR2_xtensa_overlay_dir
string "Overlay directory for custom configuration"
depends on BR2_xtensa_custom
default ""
help
Provide a directory path that contains the overlay files
for the custom configuration. The path is based on the
buildroot top directory.
config BR2_ARCH
default "xtensa" if BR2_xtensa

9
package/binutils/binutils.mk
View File

@ -68,5 +68,14 @@ define BINUTILS_INSTALL_TARGET_CMDS
endef
endif
XTENSA_CORE_NAME = $(call qstrip, $(BR2_xtensa_core_name))
ifneq ($(XTENSA_CORE_NAME),)
define BINUTILS_XTENSA_PRE_PATCH
tar xf $(BR2_xtensa_overlay_dir)/xtensa_$(XTENSA_CORE_NAME).tar \
-C $(@D) bfd include ld
endef
HOST_BINUTILS_PRE_PATCH_HOOKS += BINUTILS_XTENSA_PRE_PATCH
endif
$(eval $(autotools-package))
$(eval $(host-autotools-package))

4
toolchain/gcc/gcc-uclibc-4.x.mk
View File

@ -251,6 +251,10 @@ $(GCC_DIR)/.unpacked: $(DL_DIR)/$(GCC_SOURCE)
rm -rf $(GCC_DIR)
$(GCC_CAT) $(DL_DIR)/$(GCC_SOURCE) | tar -C $(TOOLCHAIN_DIR) $(TAR_OPTIONS) -
$(call CONFIG_UPDATE,$(@D))
ifneq ($(call qstrip, $(BR2_xtensa_core_name)),)
tar xf $(BR2_xtensa_overlay_dir)/xtensa_$(call qstrip,\
$(BR2_xtensa_core_name)).tar -C $(@D) include
endif
touch $@
gcc-patched: $(GCC_DIR)/.patched

4
toolchain/gdb/gdb.mk
View File

@ -25,6 +25,10 @@ gdb-unpacked: $(GDB_DIR)/.unpacked
$(GDB_DIR)/.unpacked: $(DL_DIR)/$(GDB_SOURCE)
mkdir -p $(GDB_DIR)
$(GDB_CAT) $(DL_DIR)/$(GDB_SOURCE) | tar -C $(GDB_DIR) $(TAR_STRIP_COMPONENTS)=1 $(TAR_OPTIONS) -
ifneq ($(call qstrip, $(BR2_xtensa_core_name)),)
tar xf $(BR2_xtensa_overlay_dir)/xtensa_$(call qstrip, \
$(BR2_xtensa_core_name)).tar -C $(@D) bfd include gdb
endif
ifneq ($(wildcard $(GDB_PATCH_DIR)),)
support/scripts/apply-patches.sh $(GDB_DIR) $(GDB_PATCH_DIR) \*.patch
endif