-----Original Message----- From: Wenbin song [mailto:wenbin.song@nxp.com] Sent: Thursday, November 30, 2017 8:27 AM To: York Sun york.sun@nxp.com; Prabhakar Kushwaha prabhakar.kushwaha@nxp.com; Ran Wang ran.wang_1@nxp.com; Mingkai Hu mingkai.hu@nxp.com; u-boot@lists.denx.de Cc: Wenbin Song wenbin.song@nxp.com Subject: [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes
Using "cpu_pos_mask()" function to detect the real online cpus, and discard the needless cpu nodes on kernel dft.
Signed-off-by: Wenbin Song wenbin.song@nxp.com
arch/arm/cpu/armv8/fsl-layerscape/Kconfig | 4 ++++ arch/arm/cpu/armv8/fsl-layerscape/fdt.c | 32 +++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig index 47145a2432..971a98c6cc 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig +++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig @@ -176,6 +176,10 @@ config HAS_FEATURE_ENHANCED_MSI bool default y if ARCH_LS1043A
+config DISCARD_OFFLINE_CPU_NODES
- bool
- default y if ARCH_LS1043A
As per understanding this feature is for taking care of SoC personalities with reduced cores.
Why a new config is required? Why cannot this be taken care at run time by reading SVR.
-pk