linux-kernel - [PATCH v2] MIPS: Pistachio: Enable KASLR

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Date:	Wed, 25 May 2016 12:58:40 +0100
From:	Matt Redfearn <matt.redfearn@...tec.com>
To:	Ralf Baechle <ralf@...ux-mips.org>
CC:	Matt Redfearn <matt.redfearn@...tec.com>,
	<linux-mips@...ux-mips.org>,
	Andrew Bresticker <abrestic@...omium.org>,
	<linux-kernel@...r.kernel.org>,
	James Hogan <james.hogan@...tec.com>,
	Jonas Gorski <jogo@...nwrt.org>
Subject: [PATCH v2] MIPS: Pistachio: Enable KASLR

Allow KASLR to be selected on Pistachio based systems. Tested on a
Creator Ci40.

Signed-off-by: Matt Redfearn <matt.redfearn@...tec.com>
Reviewed-by: James Hogan <james.hogan@...tec.com>

---

Changes in v2:
Add SYS_SUPPORTS_RELOCATABLE to Kconfig in alphabetical order

 arch/mips/Kconfig          | 1 +
 arch/mips/pistachio/init.c | 8 ++++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index c5bedce4122d..b8613c251d72 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -397,6 +397,7 @@ config MACH_PISTACHIO
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_SUPPORTS_MIPS_CPS
 	select SYS_SUPPORTS_MULTITHREADING
+	select SYS_SUPPORTS_RELOCATABLE
 	select SYS_SUPPORTS_ZBOOT
 	select SYS_HAS_EARLY_PRINTK
 	select USE_GENERIC_EARLY_PRINTK_8250
diff --git a/arch/mips/pistachio/init.c b/arch/mips/pistachio/init.c
index 96ba2cc9ad3e..95f8767ce52e 100644
--- a/arch/mips/pistachio/init.c
+++ b/arch/mips/pistachio/init.c
@@ -52,12 +52,16 @@ static void __init plat_setup_iocoherency(void)
 	}
 }
 
-void __init plat_mem_setup(void)
+void __init *plat_get_fdt(void)
 {
 	if (fw_arg0 != -2)
 		panic("Device-tree not present");
+	return (void *)fw_arg1;
+}
 
-	__dt_setup_arch((void *)fw_arg1);
+void __init plat_mem_setup(void)
+{
+	__dt_setup_arch(plat_get_fdt());
 
 	plat_setup_iocoherency();
 }
-- 
2.5.0