Merge branch 'for-next/sandbox-compile-test'

10 files changed, 100 insertions, 176 deletions

diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
index 9b79506b59..cfc359a5ce 100644
--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -1,111 +1,9 @@
-/*
- *  linux/include/asm-arm/atomic.h
- *
- *  Copyright (c) 1996 Russell King.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *  Changelog:
- *   27-06-1996	RMK	Created
- *   13-04-1997	RMK	Made functions atomic!
- *   07-12-1997	RMK	Upgraded for v2.1.
- *   26-08-1998	PJB	Added #ifdef __KERNEL__
- */
+// SPDX-License-Identifier: GPL-2.0-only
+
 #ifndef __ASM_ARM_ATOMIC_H
 #define __ASM_ARM_ATOMIC_H
 
-#ifdef CONFIG_SMP
-#error SMP not supported
-#endif
-
-typedef struct { volatile int counter; } atomic_t;
-
-#define ATOMIC_INIT(i)	{ (i) }
-
-#ifdef __KERNEL__
 #include <asm/proc-armv/system.h>
+#include <asm-generic/atomic.h>
 
-#define atomic_read(v)	((v)->counter)
-#define atomic_set(v,i)	(((v)->counter) = (i))
-
-static inline void atomic_add(int i, volatile atomic_t *v)
-{
-	unsigned long flags = 0;
-
-	local_irq_save(flags);
-	v->counter += i;
-	local_irq_restore(flags);
-}
-
-static inline void atomic_sub(int i, volatile atomic_t *v)
-{
-	unsigned long flags = 0;
-
-	local_irq_save(flags);
-	v->counter -= i;
-	local_irq_restore(flags);
-}
-
-static inline void atomic_inc(volatile atomic_t *v)
-{
-	unsigned long flags = 0;
-
-	local_irq_save(flags);
-	v->counter += 1;
-	local_irq_restore(flags);
-}
-
-static inline void atomic_dec(volatile atomic_t *v)
-{
-	unsigned long flags = 0;
-
-	local_irq_save(flags);
-	v->counter -= 1;
-	local_irq_restore(flags);
-}
-
-static inline int atomic_dec_and_test(volatile atomic_t *v)
-{
-	unsigned long flags = 0;
-	int val;
-
-	local_irq_save(flags);
-	val = v->counter;
-	v->counter = val -= 1;
-	local_irq_restore(flags);
-
-	return val == 0;
-}
-
-static inline int atomic_add_negative(int i, volatile atomic_t *v)
-{
-	unsigned long flags = 0;
-	int val;
-
-	local_irq_save(flags);
-	val = v->counter;
-	v->counter = val += i;
-	local_irq_restore(flags);
-
-	return val < 0;
-}
-
-static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
-{
-	unsigned long flags = 0;
-
-	local_irq_save(flags);
-	*addr &= ~mask;
-	local_irq_restore(flags);
-}
-
-/* Atomic operations are already serializing on ARM */
-#define smp_mb__before_atomic_dec()	barrier()
-#define smp_mb__after_atomic_dec()	barrier()
-#define smp_mb__before_atomic_inc()	barrier()
-#define smp_mb__after_atomic_inc()	barrier()
-
-#endif
 #endif
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 56db546341..072b47317c 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -4,6 +4,7 @@
 #define	IO_SPACE_LIMIT	0
 
 #include <asm-generic/io.h>
+#include <asm-generic/bitio.h>
 
 /*
  * String version of IO memory access ops:
@@ -12,63 +13,6 @@ extern void memcpy_fromio(void *, const volatile void __iomem *, size_t);
 extern void memcpy_toio(volatile void __iomem *, const void *, size_t);
 extern void memset_io(volatile void __iomem *, int, size_t);
 
-/*
- * Clear and set bits in one shot. These macros can be used to clear and
- * set multiple bits in a register using a single call. These macros can
- * also be used to set a multiple-bit bit pattern using a mask, by
- * specifying the mask in the 'clear' parameter and the new bit pattern
- * in the 'set' parameter.
- */
-
-#define out_arch(type,endian,a,v)	__raw_write##type(cpu_to_##endian(v),a)
-#define in_arch(type,endian,a)		endian##_to_cpu(__raw_read##type(a))
-
-#define out_le64(a,v)	out_arch(q,le64,a,v)
-#define out_le32(a,v)	out_arch(l,le32,a,v)
-#define out_le16(a,v)	out_arch(w,le16,a,v)
-
-#define in_le64(a)	in_arch(q,le64,a)
-#define in_le32(a)	in_arch(l,le32,a)
-#define in_le16(a)	in_arch(w,le16,a)
-
-#define out_be32(a,v)	out_arch(l,be32,a,v)
-#define out_be16(a,v)	out_arch(w,be16,a,v)
-
-#define in_be32(a)	in_arch(l,be32,a)
-#define in_be16(a)	in_arch(w,be16,a)
-
-#define out_8(a,v)	__raw_writeb(v,a)
-#define in_8(a)		__raw_readb(a)
-
-#define clrbits(type, addr, clear) \
-	out_##type((addr), in_##type(addr) & ~(clear))
-
-#define setbits(type, addr, set) \
-	out_##type((addr), in_##type(addr) | (set))
-
-#define clrsetbits(type, addr, clear, set) \
-	out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
-
-#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
-#define setbits_be32(addr, set) setbits(be32, addr, set)
-#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
-
-#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
-#define setbits_le32(addr, set) setbits(le32, addr, set)
-#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
-
-#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
-#define setbits_be16(addr, set) setbits(be16, addr, set)
-#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
-
-#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
-#define setbits_le16(addr, set) setbits(le16, addr, set)
-#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
-
-#define clrbits_8(addr, clear) clrbits(8, addr, clear)
-#define setbits_8(addr, set) setbits(8, addr, set)
-#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
-
 static inline void *phys_to_virt(unsigned long phys)
 {
 	return (void *)phys;
diff --git a/arch/sandbox/Kconfig b/arch/sandbox/Kconfig
index 6ec71a99e5..3f10709021 100644
--- a/arch/sandbox/Kconfig
+++ b/arch/sandbox/Kconfig
@@ -1,9 +1,12 @@
+source "scripts/Kconfig.include"
+
 config SANDBOX
 	bool
 	select OFTREE
 	select GPIOLIB
 	select ARCH_HAS_UBSAN_SANITIZE_ALL
 	select HAVE_ARCH_KASAN
+	select HAS_DMA
 	default y
 
 config ARCH_TEXT_BASE
@@ -20,3 +23,17 @@ config SANDBOX_UNWIND
 	default y
 	select ARCH_HAS_STACK_DUMP
 	depends on UBSAN || KASAN
+
+config CC_IS_64BIT
+	def_bool $(success,$(srctree)/scripts/gcc-64bitptr.sh $(CC))
+
+config CC_HAS_LINUX_I386_SUPPORT
+	def_bool $(cc-option,-m32) && $(ld-option,-m elf_i386)
+
+config 64BIT
+	bool
+	default n if SANDBOX_LINUX_I386
+	default CC_IS_64BIT
+
+config SANDBOX_LINUX_I386
+	bool "32-bit x86 barebox" if CC_HAS_LINUX_I386_SUPPORT
diff --git a/arch/sandbox/Makefile b/arch/sandbox/Makefile
index 3917cade94..c08ea0cf83 100644
--- a/arch/sandbox/Makefile
+++ b/arch/sandbox/Makefile
@@ -52,11 +52,21 @@ ifeq ($(CONFIG_UBSAN),y)
 SANITIZER_LIBS += -fsanitize=undefined
 endif
 
-cmd_barebox__ = $(CC) -o $@ -Wl,-T,$(BAREBOX_LDS) \
+ifeq ($(CONFIG_SANDBOX_LINUX_I386),y)
+KBUILD_CFLAGS += -m32
+KBUILD_LDFLAGS += -m elf_i386
+KBUILD_AFLAGS += -m32
+BAREBOX_LDFLAGS += -m32
+endif
+
+BAREBOX_LDFLAGS += \
+	-Wl,-T,$(BAREBOX_LDS) \
 	-Wl,--whole-archive $(BAREBOX_OBJS) -Wl,--no-whole-archive \
 	-lrt -lpthread $(SDL_LIBS) $(FTDI1_LIBS) \
 	$(SANITIZER_LIBS)
 
+cmd_barebox__ = $(CC) -o $@ $(BAREBOX_LDFLAGS)
+
 common-y += $(BOARD) arch/sandbox/os/ arch/sandbox/lib/
 
 common-$(CONFIG_OFTREE) += arch/sandbox/dts/
diff --git a/arch/sandbox/include/asm/atomic.h b/arch/sandbox/include/asm/atomic.h
new file mode 100644
index 0000000000..af12dee130
--- /dev/null
+++ b/arch/sandbox/include/asm/atomic.h
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <asm-generic/atomic.h>
diff --git a/arch/sandbox/include/asm/bitsperlong.h b/arch/sandbox/include/asm/bitsperlong.h
index 00c1fc2625..6dc0bb0c13 100644
--- a/arch/sandbox/include/asm/bitsperlong.h
+++ b/arch/sandbox/include/asm/bitsperlong.h
@@ -1,10 +1 @@
-#ifndef __ASM_BITSPERLONG_H
-#define __ASM_BITSPERLONG_H
-
-#ifdef __x86_64__
-#define BITS_PER_LONG 64
-#else
-#define BITS_PER_LONG 32
-#endif
-
-#endif /* __ASM_BITSPERLONG_H */
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/sandbox/include/asm/dma.h b/arch/sandbox/include/asm/dma.h
index 459536779e..5e72d8e7df 100644
--- a/arch/sandbox/include/asm/dma.h
+++ b/arch/sandbox/include/asm/dma.h
@@ -8,6 +8,57 @@
 #ifndef __ASM_DMA_H
 #define __ASM_DMA_H
 
-/* empty*/
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <driver.h>
+
+#define dma_alloc dma_alloc
+static inline void *dma_alloc(size_t size)
+{
+	return xmemalign(64, ALIGN(size, 64));
+}
+
+static inline void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle)
+{
+	void *ret = xmemalign(4096, size);
+	if (dma_handle)
+		*dma_handle = (dma_addr_t)ret;
+
+	memset(ret, 0, size);
+
+	return ret;
+}
+
+static inline void *dma_alloc_writecombine(size_t size, dma_addr_t *dma_handle)
+{
+	return dma_alloc_coherent(size, dma_handle);
+}
+
+static inline void dma_free_coherent(void *mem, dma_addr_t dma_handle,
+				     size_t size)
+{
+	free(mem);
+}
+
+static inline dma_addr_t dma_map_single(struct device_d *dev, void *ptr, size_t size,
+					enum dma_data_direction dir)
+{
+	return (dma_addr_t)ptr;
+}
+
+static inline void dma_unmap_single(struct device_d *dev, dma_addr_t addr, size_t size,
+				    enum dma_data_direction dir)
+{
+}
+
+static inline void dma_sync_single_for_cpu(dma_addr_t address, size_t size,
+					   enum dma_data_direction dir)
+{
+}
+
+static inline void dma_sync_single_for_device(dma_addr_t address, size_t size,
+					      enum dma_data_direction dir)
+{
+}
 
 #endif /* __ASM_DMA_H */
diff --git a/arch/sandbox/include/asm/io.h b/arch/sandbox/include/asm/io.h
index cb891df5c8..6a0e77aead 100644
--- a/arch/sandbox/include/asm/io.h
+++ b/arch/sandbox/include/asm/io.h
@@ -4,5 +4,16 @@
 #define	IO_SPACE_LIMIT 0
 
 #include <asm-generic/io.h>
+#include <asm-generic/bitio.h>
+
+static inline void *phys_to_virt(unsigned long phys)
+{
+       return (void *)phys;
+}
+
+static inline unsigned long virt_to_phys(volatile void *mem)
+{
+       return (unsigned long)mem;
+}
 
 #endif /* __ASM_SANDBOX_IO_H */
diff --git a/arch/sandbox/os/Makefile b/arch/sandbox/os/Makefile
index c012c9cf01..ed921443e0 100644
--- a/arch/sandbox/os/Makefile
+++ b/arch/sandbox/os/Makefile
@@ -6,7 +6,7 @@ KBUILD_CPPFLAGS = $(patsubst %,-I$(srctree)/%include,$(machdirs))
 
 KBUILD_CPPFLAGS += -DCONFIG_MALLOC_SIZE=$(CONFIG_MALLOC_SIZE)
 
-KBUILD_CFLAGS := -Wall
+KBUILD_CFLAGS += -Wall
 NOSTDINC_FLAGS :=
 
 obj-y = common.o tap.o
diff --git a/arch/sandbox/os/common.c b/arch/sandbox/os/common.c
index e67ea14138..382a923040 100644
--- a/arch/sandbox/os/common.c
+++ b/arch/sandbox/os/common.c
@@ -236,7 +236,7 @@ static int add_image(char *str, char *devname_template, int *devname_number)
 		filename = devname;
 		snprintf(tmp, sizeof(tmp),
 			 devname_template, (*devname_number)++);
-		devname = strdup(tmp);
+		devname = tmp;
 	}
 
 	printf("add %s backed by file %s%s\n", devname,