aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorGravatar Chris Zankel <chris@zankel.net>2012-11-15 03:53:52 +0000
committerGravatar Peter Korsgaard <jacmet@sunsite.dk>2012-11-15 16:39:48 +0100
commitd8792a04ca0d8615424f7964155782b1206b5c8d (patch)
treea98304e96305ad0e2fb84c6c7f75ad00e500733d /arch
parent75720db391376ef23b92e504c43f9972efd53141 (diff)
downloadbuildroot-d8792a04ca0d8615424f7964155782b1206b5c8d.tar.gz
buildroot-d8792a04ca0d8615424f7964155782b1206b5c8d.tar.bz2
xtensa: support configurable processor configurations
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/Config.in.xtensa31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/Config.in.xtensa b/arch/Config.in.xtensa
index 66749eeb13..af66125cbd 100644
--- a/arch/Config.in.xtensa
+++ b/arch/Config.in.xtensa
@@ -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