kumquat-buildroot/board/qemu/arm-versatile/patches/linux/versatile-nommu.patch

From 4ac4324dcdaf237aa34545b3795acb2e5c42d10e Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@openadk.org>
Date: Fri, 1 Feb 2019 11:36:20 +0100
Subject: [PATCH] arm-versatile-nommu: Linux patch

Originally made by Waldemar Brodkorb <wbx@openadk.org> from LKML.

Signed-Off-by: Waldemar Brodkorb <wbx@openadk.org>
[Gerome: reformated as a Git patch]
Signed-off-by: Gerome Burlats <gerome.burlats@smile.fr>
[Romain: fix Waldemar's authorship in Git patch]
Signed-off-by: Romain Naour <romain.naour@smile.fr>
---
 arch/arm/Kconfig                       | 11 +++++++++++
 arch/arm/Kconfig.debug                 |  3 ++-
 arch/arm/include/asm/mach/map.h        |  1 +
 arch/arm/mach-versatile/Kconfig        |  5 +++--
 arch/arm/mach-versatile/Makefile.boot  |  3 +++
 arch/arm/mach-versatile/versatile_dt.c |  4 ++++
 6 files changed, 24 insertions(+), 3 deletions(-)
 create mode 100644 arch/arm/mach-versatile/Makefile.boot

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e8cd55a5b04c..fc2dbff70394 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -353,6 +353,17 @@ config ARM_SINGLE_ARMV7M
 	select SPARSE_IRQ
 	select USE_OF
 
+config ARM_SINGLE_ARCH_VERSATILE
+	bool "ARM Ltd. Versatile family"
+	depends on !MMU
+	select AUTO_ZRELADDR
+	select CLKSRC_OF
+	select COMMON_CLK
+	select GENERIC_CLOCKEVENTS
+	select GPIOLIB
+	select SPARSE_IRQ
+	select USE_OF
+
 config ARCH_EBSA110
 	bool "EBSA-110"
 	select ARCH_USES_GETTIMEOFFSET
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index f6fcb8a79889..92fc637d3db8 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1843,7 +1843,8 @@ config DEBUG_UNCOMPRESS
 config UNCOMPRESS_INCLUDE
 	string
 	default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
-					PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
+					PLAT_SAMSUNG || ARM_SINGLE_ARMV7M || \
+					ARM_SINGLE_ARCH_VERSATILE
 	default "mach/uncompress.h"
 
 config EARLY_PRINTK
diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
index 9b7c328fb207..b1fe9c8b5c3e 100644
--- a/arch/arm/include/asm/mach/map.h
+++ b/arch/arm/include/asm/mach/map.h
@@ -62,6 +62,7 @@ extern int ioremap_page(unsigned long virt, unsigned long phys,
 #else
 #define iotable_init(map,num)	do { } while (0)
 #define vm_reserve_area_early(a,s,c)	do { } while (0)
+#define debug_ll_io_init()	do { } while (0)
 #endif
 
 #endif
diff --git a/arch/arm/mach-versatile/Kconfig b/arch/arm/mach-versatile/Kconfig
index f5c275434d6c..06ad999d5978 100644
--- a/arch/arm/mach-versatile/Kconfig
+++ b/arch/arm/mach-versatile/Kconfig
@@ -1,7 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 config ARCH_VERSATILE
-	bool "ARM Ltd. Versatile family"
-	depends on ARCH_MULTI_V5
+	bool "ARM Ltd. Versatile family" if ARCH_MULTI_V5
+	depends on ARCH_MULTI_V5 || ARM_SINGLE_ARCH_VERSATILE
+	default y if ARM_SINGLE_ARCH_VERSATILE
 	select ARM_AMBA
 	select ARM_TIMER_SP804
 	select ARM_VIC
diff --git a/arch/arm/mach-versatile/Makefile.boot b/arch/arm/mach-versatile/Makefile.boot
new file mode 100644
index 000000000000..eacfc3f5c33e
--- /dev/null
+++ b/arch/arm/mach-versatile/Makefile.boot
@@ -0,0 +1,3 @@
+# Empty file waiting for deletion once Makefile.boot isn't needed any more.
+# Patch waits for application at
+# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
diff --git a/arch/arm/mach-versatile/versatile_dt.c b/arch/arm/mach-versatile/versatile_dt.c
index 3c8d39c12909..8cfa05a37295 100644
--- a/arch/arm/mach-versatile/versatile_dt.c
+++ b/arch/arm/mach-versatile/versatile_dt.c
@@ -37,7 +37,11 @@
 #include <asm/mach/map.h>
 
 /* macro to get at MMIO space when running virtually */
+#ifdef CONFIG_MMU
 #define IO_ADDRESS(x)		(((x) & 0x0fffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
+#else
+#define IO_ADDRESS(x)		(x)
+#endif
 #define __io_address(n)		((void __iomem __force *)IO_ADDRESS(n))
 
 /*
-- 
2.14.5