bslathi19/buildroot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

arch/arm: add big.LITTLE cpu variants

Browse Source 
The big.LITTLE configurations can be optimised for by gcc, and a few
users wonder what they should choose when they have such CPUs.

Add new entries for those big.LITTLE configurations.

Note: the various combos were added in various gcc versions, but only
really worked in later versions:

    Variant   | Introduced in | First built in
    ----------+---------------+----------------
    a15-a7    | 4.9           | 4.9
    a17-a7    | 5             | 5
    a57-a53   | 4.9           | 6
    a72-a53   | 5             | 6

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN
2017-07-09 11:30:00 +02:00
committed by Thomas Petazzoni
parent e734c63387
commit 78c2a9f763
4 changed files with 48 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
toolchain/toolchain-external/toolchain-external-codesourcery-aarch64/Config.in
View File

@@ -1,6 +1,8 @@
config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64
bool "CodeSourcery AArch64 2014.11"
depends on BR2_aarch64
# a57/a53 and a72/a53 appeared in gcc-6 or were broken before
depends on !BR2_cortex_a57_a53 && !BR2_cortex_a72_a53
depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
depends on !BR2_STATIC_LIBS
select BR2_TOOLCHAIN_EXTERNAL_GLIBC

4
toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in
View File

@@ -1,6 +1,10 @@
config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM
bool "Sourcery CodeBench ARM 2014.05"
depends on BR2_arm
# a15/a7 appeared in gcc-4.9, a17/a7 in gcc-5, a57/a53 and a72/a53
# in gcc-6, or they each were broken earlier than that.
depends on !BR2_cortex_a15_a7 && !BR2_cortex_a17_a7
depends on !BR2_cortex_a57_53 && !BR2_cortex_a72_53
depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
depends on BR2_ARM_EABI
# Unsupported ARM cores