From 7c245ffc17a9ab6215830d4ecd8b2f9beddb487c Mon Sep 17 00:00:00 2001
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From: Waldemar Brodkorb <wbx@openadk.org>
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Date: Fri, 1 Feb 2019 11:36:20 +0100
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Subject: [PATCH] arm-versatile-nommu: Linux patch
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Originally made by Waldemar Brodkorb <wbx@openadk.org> from LKML.
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Rename CLKSRC_OF to TIMER_OF (kernel >= 4.13)
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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bb0eb050a577a866cb47c2dc37596f1207f4c2d9
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Remove GENERIC_CLOCKEVENTS since its enabled by default (kernel >= 5.11)
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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0774a6ed294b963dc76df2d8342ab86d030759ec
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Select CONFIG_GENERIC_IRQ_MULTI_HANDLER since irqchip doesn't select it anymore (kernel >= 5.12)
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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a79f7051cccb6f3bcd3d2a0a058c7d5c79bb0371
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Signed-Off-by: Waldemar Brodkorb <wbx@openadk.org>
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[Gerome: reformated as a Git patch]
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Signed-off-by: Gerome Burlats <gerome.burlats@smile.fr>
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[Romain: fix Waldemar's authorship in Git patch]
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Signed-off-by: Romain Naour <romain.naour@smile.fr>
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---
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arch/arm/Kconfig | 11 +++++++++++
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arch/arm/Kconfig.debug | 3 ++-
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arch/arm/include/asm/mach/map.h | 1 +
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arch/arm/mach-versatile/Kconfig | 5 +++--
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arch/arm/mach-versatile/Makefile.boot | 3 +++
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arch/arm/mach-versatile/versatile_dt.c | 4 ++++
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6 files changed, 24 insertions(+), 3 deletions(-)
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create mode 100644 arch/arm/mach-versatile/Makefile.boot
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diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
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index dcf2df6da98f..c2155c1a2eba 100644
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--- a/arch/arm/Kconfig
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+++ b/arch/arm/Kconfig
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@@ -337,6 +337,17 @@ config ARM_SINGLE_ARMV7M
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select SPARSE_IRQ
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select USE_OF
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+config ARM_SINGLE_ARCH_VERSATILE
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+ bool "ARM Ltd. Versatile family"
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+ depends on !MMU
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+ select AUTO_ZRELADDR
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+ select TIMER_OF
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+ select COMMON_CLK
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+ select GENERIC_IRQ_MULTI_HANDLER
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+ select GPIOLIB
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+ select SPARSE_IRQ
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+ select USE_OF
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+
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config ARCH_EP93XX
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bool "EP93xx-based"
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select ARCH_SPARSEMEM_ENABLE
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diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
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index 98436702e0c7..7e63299ceb40 100644
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--- a/arch/arm/Kconfig.debug
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+++ b/arch/arm/Kconfig.debug
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@@ -1891,7 +1891,8 @@ config DEBUG_UNCOMPRESS
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config UNCOMPRESS_INCLUDE
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string
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default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
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- PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
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+ PLAT_SAMSUNG || ARM_SINGLE_ARMV7M || \
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+ ARM_SINGLE_ARCH_VERSATILE
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default "mach/uncompress.h"
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config EARLY_PRINTK
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diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
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index 92282558caf7..90bd9c069ffc 100644
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--- a/arch/arm/include/asm/mach/map.h
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+++ b/arch/arm/include/asm/mach/map.h
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@@ -59,6 +59,7 @@ extern int ioremap_page(unsigned long virt, unsigned long phys,
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#else
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#define iotable_init(map,num) do { } while (0)
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#define vm_reserve_area_early(a,s,c) do { } while (0)
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+#define debug_ll_io_init() do { } while (0)
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#endif
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#endif
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diff --git a/arch/arm/mach-versatile/Kconfig b/arch/arm/mach-versatile/Kconfig
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index d88e7725bf99..d38b90157f13 100644
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--- a/arch/arm/mach-versatile/Kconfig
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+++ b/arch/arm/mach-versatile/Kconfig
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@@ -1,7 +1,8 @@
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# SPDX-License-Identifier: GPL-2.0
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config ARCH_VERSATILE
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- bool "ARM Ltd. Versatile family"
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- depends on ARCH_MULTI_V5
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+ bool "ARM Ltd. Versatile family" if ARCH_MULTI_V5
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+ depends on ARCH_MULTI_V5 || ARM_SINGLE_ARCH_VERSATILE
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+ default y if ARM_SINGLE_ARCH_VERSATILE
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select ARM_AMBA
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select ARM_TIMER_SP804
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select ARM_VIC
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diff --git a/arch/arm/mach-versatile/Makefile.boot b/arch/arm/mach-versatile/Makefile.boot
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new file mode 100644
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index 000000000000..eacfc3f5c33e
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--- /dev/null
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+++ b/arch/arm/mach-versatile/Makefile.boot
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@@ -0,0 +1,3 @@
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+# Empty file waiting for deletion once Makefile.boot isn't needed any more.
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+# Patch waits for application at
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+# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
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diff --git a/arch/arm/mach-versatile/versatile_dt.c b/arch/arm/mach-versatile/versatile_dt.c
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index 02ba68abe533..835b51bc597b 100644
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--- a/arch/arm/mach-versatile/versatile_dt.c
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+++ b/arch/arm/mach-versatile/versatile_dt.c
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@@ -22,7 +22,11 @@
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#include <asm/mach/map.h>
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/* macro to get at MMIO space when running virtually */
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+#ifdef CONFIG_MMU
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#define IO_ADDRESS(x) (((x) & 0x0fffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
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+#else
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+#define IO_ADDRESS(x) (x)
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+#endif
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#define __io_address(n) ((void __iomem __force *)IO_ADDRESS(n))
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/*
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--
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2.31.1
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