binfmt_flat: add a ARCH_HAS_BINFMT_FLAT option
Allow architectures to opt into ARCH_HAS_BINFMT_FLAT support instead of
assuming that all nommu ports support the format.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b1b48c0..695a26c 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -4,6 +4,7 @@
default y
select ARCH_32BIT_OFF_T
select ARCH_CLOCKSOURCE_DATA
+ select ARCH_HAS_BINFMT_FLAT
select ARCH_HAS_DEBUG_VIRTUAL if MMU
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index eeb0471..78dfe18 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -7,6 +7,7 @@
config C6X
def_bool y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_BINFMT_FLAT
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select CLKDEV_LOOKUP
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 7457f19..ec800e9 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -2,6 +2,7 @@
config H8300
def_bool y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_BINFMT_FLAT
select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
select BINFMT_FLAT_OLD_ALWAYS_RAM
select GENERIC_ATOMIC64
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index fd69ee5a..c0c43c6 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -3,6 +3,7 @@
bool
default y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_BINFMT_FLAT
select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
select ARCH_NO_COHERENT_DMA_MMAP if !MMU
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index f11433d..d411de0 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -3,6 +3,7 @@
def_bool y
select ARCH_32BIT_OFF_T
select ARCH_NO_SWAP
+ select ARCH_HAS_BINFMT_FLAT if !MMU
select ARCH_HAS_DMA_COHERENT_TO_PFN if MMU
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index b77f512..df3e621 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
config SUPERH
def_bool y
+ select ARCH_HAS_BINFMT_FLAT if !MMU
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_MIGHT_HAVE_PC_PARPORT
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 6ec1b75..ebc135b 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -2,6 +2,7 @@
config XTENSA
def_bool y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_BINFMT_FLAT if !MMU
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_NO_COHERENT_DMA_MMAP if !MMU
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 82f7d7f..286b425 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -91,9 +91,12 @@
Most systems will not boot if you say M or N here. If unsure, say Y.
+config ARCH_HAS_BINFMT_FLAT
+ bool
+
config BINFMT_FLAT
bool "Kernel support for flat binaries"
- depends on !MMU || ARM || M68K
+ depends on ARCH_HAS_BINFMT_FLAT
help
Support uClinux FLAT format binaries.
