linux-kernel - [PATCH 2/2] arch: arm64: xilinx: Make zynqmp

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Date:   Thu,  9 Jan 2020 11:06:04 -0800
From:   Jolly Shah <jolly.shah@...inx.com>
To:     ard.biesheuvel@...aro.org, mingo@...nel.org,
        gregkh@...uxfoundation.org, matt@...eblueprint.co.uk,
        sudeep.holla@....com, hkallweit1@...il.com, keescook@...omium.org,
        dmitry.torokhov@...il.com, michal.simek@...inx.com
Cc:     rajanv@...inx.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Tejas Patel <tejas.patel@...inx.com>,
        Jolly Shah <jolly.shah@...inx.com>
Subject: [PATCH 2/2] arch: arm64: xilinx: Make zynqmp_firmware driver optional

From: Tejas Patel <tejas.patel@...inx.com>

Zynqmp firmware driver requires firmware to be present in system.
Zynqmp firmware driver will crash if firmware is not present in system.
For example single arch QEMU, may not have firmware, with such setup
Linux booting fails.

So make zynqmp_firmware driver as optional to disable it if user don't
have firmware in system.

Signed-off-by: Tejas Patel <tejas.patel@...inx.com>
Signed-off-by: Jolly Shah <jolly.shah@...inx.com>
---
 arch/arm64/Kconfig.platforms    | 1 -
 drivers/firmware/xilinx/Kconfig | 2 ++
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index b2b504e..563c93d 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -301,7 +301,6 @@ config ARCH_ZX
 
 config ARCH_ZYNQMP
 	bool "Xilinx ZynqMP Family"
-	select ZYNQMP_FIRMWARE
 	help
 	  This enables support for Xilinx ZynqMP Family
 
diff --git a/drivers/firmware/xilinx/Kconfig b/drivers/firmware/xilinx/Kconfig
index bd33bbf..9a9bd19 100644
--- a/drivers/firmware/xilinx/Kconfig
+++ b/drivers/firmware/xilinx/Kconfig
@@ -6,6 +6,8 @@ menu "Zynq MPSoC Firmware Drivers"
 
 config ZYNQMP_FIRMWARE
 	bool "Enable Xilinx Zynq MPSoC firmware interface"
+	depends on ARCH_ZYNQMP
+	default y if ARCH_ZYNQMP
 	select MFD_CORE
 	help
 	  Firmware interface driver is used by different
-- 
2.7.4