Merge git://git.denx.de/u-boot-riscv

16 files changed, 59 insertions, 271 deletions

diff --git a/arch/nds32/dts/ag101p.dts b/arch/nds32/dts/ag101p.dts
index 19dc36f..7832efb 100644
--- a/arch/nds32/dts/ag101p.dts
+++ b/arch/nds32/dts/ag101p.dts
@@ -67,5 +67,6 @@
 		fifo-depth = <0x10>;
 		reg = <0x98e00000 0x1000>;
 		interrupts = <5 4>;
+		cap-sd-highspeed;
 	};
 };
diff --git a/arch/nds32/include/asm/arch-ae3xx/ae3xx.h b/arch/nds32/include/asm/arch-ae3xx/ae3xx.h
index b074e84..9d55c97 100644
--- a/arch/nds32/include/asm/arch-ae3xx/ae3xx.h
+++ b/arch/nds32/include/asm/arch-ae3xx/ae3xx.h
@@ -44,8 +44,6 @@
 #define CONFIG_FTGPIO010_BASE		0xf0700000
 /* I2C */
 #define CONFIG_FTIIC010_BASE		0xf0a00000
-/* SD Controller */
-#define CONFIG_FTSDC010_BASE		0xf0e00000
 
 /* The following address was not defined in Linux */
 
diff --git a/arch/nds32/include/asm/arch-ag101/ag101.h b/arch/nds32/include/asm/arch-ag101/ag101.h
index 490f28b..0f4c3ef 100644
--- a/arch/nds32/include/asm/arch-ag101/ag101.h
+++ b/arch/nds32/include/asm/arch-ag101/ag101.h
@@ -69,8 +69,6 @@
 #define CONFIG_RESERVED_04_BASE		0x98C00000
 /* Compat Flash Controller */
 #define CONFIG_FTCFC010_BASE		0x98D00000
-/* SD Controller */
-#define CONFIG_FTSDC010_BASE		0x98E00000
 
 /* Synchronous Serial Port Controller (SSP) I2S/AC97 */
 #define CONFIG_FTSSP010_02_BASE		0x99400000
diff --git a/arch/nds32/include/asm/arch-ag102/ag102.h b/arch/nds32/include/asm/arch-ag102/ag102.h
index c5ee3d9..a8aef93 100644
--- a/arch/nds32/include/asm/arch-ag102/ag102.h
+++ b/arch/nds32/include/asm/arch-ag102/ag102.h
@@ -56,8 +56,6 @@
 #define CONFIG_FTSSP010_01_BASE		0x94100000
 /* UART1 - APB STUART Controller (UART0 in Linux) */
 #define CONFIG_FTUART010_01_BASE	0x94200000
-/* FTSDC010 SD Controller */
-#define CONFIG_FTSDC010_BASE		0x94400000
 /* APB - SSP with HDA/AC97 Controller */
 #define CONFIG_FTSSP010_02_BASE		0x94500000
 /* UART2 - APB STUART Controller (UART1 in Linux) */
diff --git a/arch/riscv/cpu/nx25/start.S b/arch/riscv/cpu/nx25/start.S
index 6a07663..cd0a663 100644
--- a/arch/riscv/cpu/nx25/start.S
+++ b/arch/riscv/cpu/nx25/start.S
@@ -45,6 +45,8 @@ trap_vector:
 
 .global trap_entry
 handle_reset:
+	li t0, CONFIG_SYS_SDRAM_BASE
+	SREG a2, 0(t0)
 	la t0, trap_entry
 	csrw mtvec, t0
 	csrwi mstatus, 0
diff --git a/arch/riscv/dts/ae250.dts b/arch/riscv/dts/ae250.dts
index 5dc4fb0..9a38345 100644
--- a/arch/riscv/dts/ae250.dts
+++ b/arch/riscv/dts/ae250.dts
@@ -74,6 +74,7 @@
 		fifo-depth = <0x10>;
 		reg = <0xf0e00000 0x1000>;
 		interrupts = <17 4>;
+		cap-sd-highspeed;
 	};
 
 	spi: spi@f0b00000 {
diff --git a/arch/riscv/include/asm/bootm.h b/arch/riscv/include/asm/bootm.h
index 0a644bb..9a90f23 100644
--- a/arch/riscv/include/asm/bootm.h
+++ b/arch/riscv/include/asm/bootm.h
@@ -13,53 +13,4 @@
 
 #include <asm/setup.h>
 
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
-		defined(CONFIG_CMDLINE_TAG) || \
-		defined(CONFIG_INITRD_TAG) || \
-		defined(CONFIG_SERIAL_TAG) || \
-		defined(CONFIG_REVISION_TAG)
-# define BOOTM_ENABLE_TAGS		1
-#else
-# define BOOTM_ENABLE_TAGS		0
-#endif
-
-#ifdef CONFIG_SETUP_MEMORY_TAGS
-# define BOOTM_ENABLE_MEMORY_TAGS	1
-#else
-# define BOOTM_ENABLE_MEMORY_TAGS	0
-#endif
-
-#ifdef CONFIG_CMDLINE_TAG
- #define BOOTM_ENABLE_CMDLINE_TAG	1
-#else
- #define BOOTM_ENABLE_CMDLINE_TAG	0
-#endif
-
-#ifdef CONFIG_INITRD_TAG
- #define BOOTM_ENABLE_INITRD_TAG	1
-#else
- #define BOOTM_ENABLE_INITRD_TAG	0
-#endif
-
-#ifdef CONFIG_SERIAL_TAG
- #define BOOTM_ENABLE_SERIAL_TAG	1
-void get_board_serial(struct tag_serialnr *serialnr);
-#else
- #define BOOTM_ENABLE_SERIAL_TAG	0
-static inline void get_board_serial(struct tag_serialnr *serialnr)
-{
-}
-#endif
-
-#ifdef CONFIG_REVISION_TAG
- #define BOOTM_ENABLE_REVISION_TAG	1
-u32 get_board_rev(void);
-#else
- #define BOOTM_ENABLE_REVISION_TAG	0
-static inline u32 get_board_rev(void)
-{
-	return 0;
-}
-#endif
-
 #endif
diff --git a/arch/riscv/include/asm/encoding.h b/arch/riscv/include/asm/encoding.h
index 5ff6d59..dbf8d45 100644
--- a/arch/riscv/include/asm/encoding.h
+++ b/arch/riscv/include/asm/encoding.h
@@ -121,7 +121,9 @@
 #define PTE_SW(PTE)	((0x88888880U >> ((PTE) & 0x1F)) & 1)
 #define PTE_SX(PTE)	((0xA0A0A000U >> ((PTE) & 0x1F)) & 1)
 
-#define PTE_CHECK_PERM(PTE, SUPERVISOR, STORE, FETCH) \
+#define PTE_CHECK_PERM(_PTE, _SUPERVISOR, STORE, FETCH) \
+	typeof(_PTE) (PTE) = (_PTE); \
+	typeof(_SUPERVISOR) (SUPERVISOR) = (_SUPERVISOR); \
 	((STORE) ? ((SUPERVISOR) ? PTE_SW(PTE) : PTE_UW(PTE)) : \
 	(FETCH) ? ((SUPERVISOR) ? PTE_SX(PTE) : PTE_UX(PTE)) : \
 	((SUPERVISOR) ? PTE_SR(PTE) : PTE_UR(PTE)))
@@ -151,27 +153,31 @@
 	asm volatile ("csrr %0, " #reg : "=r"(__tmp)); \
 	__tmp; })
 
-#define write_csr(reg, val) ({ \
+#define write_csr(reg, _val) ({ \
+typeof(_val) (val) = (_val); \
 if (__builtin_constant_p(val) && (unsigned long)(val) < 32) \
 	asm volatile ("csrw " #reg ", %0" :: "i"(val)); \
 else \
 	asm volatile ("csrw " #reg ", %0" :: "r"(val)); })
 
-#define swap_csr(reg, val) ({ unsigned long __tmp; \
+#define swap_csr(reg, _val) ({ unsigned long __tmp; \
+typeof(_val) (val) = (_val); \
 if (__builtin_constant_p(val) && (unsigned long)(val) < 32) \
 	asm volatile ("csrrw %0, " #reg ", %1" : "=r"(__tmp) : "i"(val)); \
 else \
 	asm volatile ("csrrw %0, " #reg ", %1" : "=r"(__tmp) : "r"(val)); \
 	__tmp; })
 
-#define set_csr(reg, bit) ({ unsigned long __tmp; \
+#define set_csr(reg, _bit) ({ unsigned long __tmp; \
+typeof(_bit) (bit) = (_bit); \
 if (__builtin_constant_p(bit) && (unsigned long)(bit) < 32) \
 	asm volatile ("csrrs %0, " #reg ", %1" : "=r"(__tmp) : "i"(bit)); \
 else \
 	asm volatile ("csrrs %0, " #reg ", %1" : "=r"(__tmp) : "r"(bit)); \
 	__tmp; })
 
-#define clear_csr(reg, bit) ({ unsigned long __tmp; \
+#define clear_csr(reg, _bit) ({ unsigned long __tmp; \
+typeof(_bit) (bit) = (_bit); \
 if (__builtin_constant_p(bit) && (unsigned long)(bit) < 32) \
 	asm volatile ("csrrc %0, " #reg ", %1" : "=r"(__tmp) : "i"(bit)); \
 else \
diff --git a/arch/riscv/include/asm/global_data.h b/arch/riscv/include/asm/global_data.h
index 0cce98a..bd352c2 100644
--- a/arch/riscv/include/asm/global_data.h
+++ b/arch/riscv/include/asm/global_data.h
@@ -17,6 +17,6 @@ struct arch_global_data {
 
 #include <asm-generic/global_data.h>
 
-#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("gp")
+#define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm ("gp")
 
 #endif /* __ASM_GBL_DATA_H */
diff --git a/arch/riscv/include/asm/io.h b/arch/riscv/include/asm/io.h
index e7f63ed..1df6b1b 100644
--- a/arch/riscv/include/asm/io.h
+++ b/arch/riscv/include/asm/io.h
@@ -416,19 +416,17 @@ static inline void writesl(unsigned int *addr, const void *data, int longlen)
 #define eth_io_copy_and_sum(s, c, l, b) \
 	eth_copy_and_sum((s), __mem_pci(c), (l), (b))
 
-static inline int
-check_signature(unsigned long io_addr, const unsigned char *signature,
-		  int length)
+static inline int check_signature(ulong io_addr, const uchar *s, int len)
 {
 	int retval = 0;
 
 	do {
-		if (readb(io_addr) != *signature)
+		if (readb(io_addr) != *s)
 			goto out;
 		io_addr++;
-		signature++;
-		length--;
-	} while (length);
+		s++;
+		len--;
+	} while (len);
 	retval = 1;
 out:
 	return retval;
@@ -455,18 +453,17 @@ out:
 	eth_copy_and_sum((a), __mem_isa(b), (c), (d))
 
 static inline int
-isa_check_signature(unsigned long io_addr, const unsigned char *signature,
-		       int length)
+isa_check_signature(ulong io_addr, const uchar *s, int len)
 {
 	int retval = 0;
 
 	do {
-		if (isa_readb(io_addr) != *signature)
+		if (isa_readb(io_addr) != *s)
 			goto out;
 		io_addr++;
-		signature++;
-		length--;
-	} while (length);
+		s++;
+		len--;
+	} while (len);
 	retval = 1;
 out:
 	return retval;
diff --git a/arch/riscv/include/asm/posix_types.h b/arch/riscv/include/asm/posix_types.h
index 6892b66..7438dbe 100644
--- a/arch/riscv/include/asm/posix_types.h
+++ b/arch/riscv/include/asm/posix_types.h
@@ -69,19 +69,23 @@ typedef struct {
 #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
 
 #undef	__FD_SET
-#define __FD_SET(fd, fdsetp) \
+#define __FD_SET(_fd, fdsetp) \
+	typeof(_fd) (fd) = (_fd); \
 	(((fd_set *)fdsetp)->fds_bits[fd >> 5] |= (1 << (fd & 31)))
 
 #undef	__FD_CLR
-#define __FD_CLR(fd, fdsetp) \
+#define __FD_CLR(_fd, fdsetp) \
+	typeof(_fd) (fd) = (_fd); \
 	(((fd_set *)fdsetp)->fds_bits[fd >> 5] &= ~(1 << (fd & 31)))
 
 #undef	__FD_ISSET
-#define __FD_ISSET(fd, fdsetp) \
+#define __FD_ISSET(_fd, fdsetp) \
+	typeof(_fd) (fd) = (_fd); \
 	((((fd_set *)fdsetp)->fds_bits[fd >> 5] & (1 << (fd & 31))) != 0)
 
 #undef	__FD_ZERO
-#define __FD_ZERO(fdsetp) \
+#define __FD_ZERO(_fdsetp) \
+	typeof(_fdsetp) (fd) = (_fdsetp); \
 	(memset(fdsetp, 0, sizeof(*(fd_set *)fdsetp)))
 
 #endif
diff --git a/arch/riscv/include/asm/ptrace.h b/arch/riscv/include/asm/ptrace.h
index 76d6869..651078f 100644
--- a/arch/riscv/include/asm/ptrace.h
+++ b/arch/riscv/include/asm/ptrace.h
@@ -65,8 +65,7 @@ static inline unsigned long instruction_pointer(struct pt_regs *regs)
 	return GET_IP(regs);
 }
 
-static inline void instruction_pointer_set(struct pt_regs *regs,
-					     unsigned long val)
+static inline void instruction_pointer_set(struct pt_regs *regs, ulong val)
 {
 	SET_IP(regs, val);
 }
@@ -82,8 +81,7 @@ static inline unsigned long user_stack_pointer(struct pt_regs *regs)
 	return GET_USP(regs);
 }
 
-static inline void user_stack_pointer_set(struct pt_regs *regs,
-					     unsigned long val)
+static inline void user_stack_pointer_set(struct pt_regs *regs, ulong val)
 {
 	SET_USP(regs, val);
 }
@@ -97,8 +95,7 @@ static inline unsigned long frame_pointer(struct pt_regs *regs)
 	return GET_FP(regs);
 }
 
-static inline void frame_pointer_set(struct pt_regs *regs,
-				       unsigned long val)
+static inline void frame_pointer_set(struct pt_regs *regs, ulong val)
 {
 	SET_FP(regs, val);
 }
diff --git a/arch/riscv/include/asm/setup.h b/arch/riscv/include/asm/setup.h
index 731b0d9..4b18243 100644
--- a/arch/riscv/include/asm/setup.h
+++ b/arch/riscv/include/asm/setup.h
@@ -145,14 +145,18 @@ struct tagtable {
 	int (*parse)(const struct tag *);
 };
 
-#define tag_member_present(tag, member)				\
+#define tag_member_present(_tag, member)				\
+	typeof(_tag) (tag) = (_tag); \
 	((unsigned long)(&((struct tag *)0L)->member + 1)	\
 		<= (tag)->hdr.size * 4)
 
-#define tag_next(t)	((struct tag *)((u32 *)(t) + (t)->hdr.size))
+#define tag_next(_t)	\
+	typeof(_t) (t) = (_t); \
+	((struct tag *)((u32 *)(t) + (t)->hdr.size))
 #define tag_size(type)	((sizeof(struct tag_header) + sizeof(struct type)) >> 2)
 
-#define for_each_tag(t, base) \
+#define for_each_tag(_t, base) \
+	typeof(_t) (t) = (_t); \
 	for (t = base; t->hdr.size; t = tag_next(t))
 
 #ifdef __KERNEL__
diff --git a/arch/riscv/include/asm/string.h b/arch/riscv/include/asm/string.h
index 038cdae..0fc3424 100644
--- a/arch/riscv/include/asm/string.h
+++ b/arch/riscv/include/asm/string.h
@@ -26,8 +26,11 @@
 #undef __HAVE_ARCH_MEMSET
 
 #ifdef CONFIG_MARCO_MEMSET
-#define memset(p, v, n)							\
-	({								\
+#define memset(_p, _v, _n)	\
+	(typeof(_p) (p) = (_p); \
+	 typeof(_v) (v) = (_v); \
+	 typeof(_n) (n) = (_n); \
+	 {								\
 		if ((n) != 0) {						\
 			if (__builtin_constant_p((v)) && (v) == 0)	\
 				__memzero((p), (n));			\
@@ -37,7 +40,10 @@
 		(p);							\
 	})
 
-#define memzero(p, n) ({ if ((n) != 0) __memzero((p), (n)); (p); })
+#define memzero(_p, _n) \
+	(typeof(_p) (p) = (_p); \
+	 typeof(_n) (n) = (_n); \
+	 { if ((n) != 0) __memzero((p), (n)); (p); })
 #endif
 
 #endif /* __ASM_RISCV_STRING_H */
diff --git a/arch/riscv/lib/bootm.c b/arch/riscv/lib/bootm.c
index 44ce38b..9242fa8 100644
--- a/arch/riscv/lib/bootm.c
+++ b/arch/riscv/lib/bootm.c
@@ -21,36 +21,12 @@ int arch_fixup_fdt(void *blob)
 	return 0;
 }
 
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
-	defined(CONFIG_CMDLINE_TAG) || \
-	defined(CONFIG_INITRD_TAG) || \
-	defined(CONFIG_SERIAL_TAG) || \
-	defined(CONFIG_REVISION_TAG)
-static void setup_start_tag(bd_t *bd);
-
-# ifdef CONFIG_SETUP_MEMORY_TAGS
-static void setup_memory_tags(bd_t *bd);
-# endif
-static void setup_commandline_tag(bd_t *bd, char *commandline);
-
-# ifdef CONFIG_INITRD_TAG
-static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end);
-# endif
-static void setup_end_tag(bd_t *bd);
-
-static struct tag *params;
-#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
-
 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 {
 	bd_t	*bd = gd->bd;
 	char	*s;
 	int	machid = bd->bi_arch_number;
-	void	(*theKernel)(int zero, int arch, uint params);
-
-#ifdef CONFIG_CMDLINE_TAG
-	char *commandline = env_get("bootargs");
-#endif
+	void	(*theKernel)(int arch, uint params);
 
 	/*
 	 * allow the PREP bootm subcommand, it is required for bootm to work
@@ -61,7 +37,7 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
 		return 1;
 
-	theKernel = (void (*)(int, int, uint))images->ep;
+	theKernel = (void (*)(int, uint))images->ep;
 
 	s = env_get("machid");
 	if (s) {
@@ -82,167 +58,16 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 			hang();
 		}
 #endif
-	} else if (BOOTM_ENABLE_TAGS) {
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
-	defined(CONFIG_CMDLINE_TAG) || \
-	defined(CONFIG_INITRD_TAG) || \
-	defined(CONFIG_SERIAL_TAG) || \
-	defined(CONFIG_REVISION_TAG)
-	setup_start_tag(bd);
-#ifdef CONFIG_SERIAL_TAG
-	setup_serial_tag(&params);
-#endif
-#ifdef CONFIG_REVISION_TAG
-	setup_revision_tag(&params);
-#endif
-#ifdef CONFIG_SETUP_MEMORY_TAGS
-	setup_memory_tags(bd);
-#endif
-#ifdef CONFIG_CMDLINE_TAG
-	setup_commandline_tag(bd, commandline);
-#endif
-#ifdef CONFIG_INITRD_TAG
-	if (images->rd_start && images->rd_end)
-		setup_initrd_tag(bd, images->rd_start, images->rd_end);
-#endif
-	setup_end_tag(bd);
-#endif
+	}
 
 	/* we assume that the kernel is in place */
 	printf("\nStarting kernel ...\n\n");
 
-#ifdef CONFIG_USB_DEVICE
-	{
-		extern void udc_disconnect(void);
-		udc_disconnect();
-	}
-#endif
-	}
 	cleanup_before_linux();
 	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
-		theKernel(0, machid, (unsigned long)images->ft_addr);
-	else
-	theKernel(0, machid, bd->bi_boot_params);
+		theKernel(machid, (unsigned long)images->ft_addr);
+
 	/* does not return */
 
 	return 1;
 }
-
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
-	defined(CONFIG_CMDLINE_TAG) || \
-	defined(CONFIG_INITRD_TAG) || \
-	defined(CONFIG_SERIAL_TAG) || \
-	defined(CONFIG_REVISION_TAG)
-static void setup_start_tag(bd_t *bd)
-{
-	params = (struct tag *)bd->bi_boot_params;
-
-	params->hdr.tag = ATAG_CORE;
-	params->hdr.size = tag_size(tag_core);
-
-	params->u.core.flags = 0;
-	params->u.core.pagesize = 0;
-	params->u.core.rootdev = 0;
-
-	params = tag_next(params);
-}
-
-#ifdef CONFIG_SETUP_MEMORY_TAGS
-static void setup_memory_tags(bd_t *bd)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
-		params->hdr.tag = ATAG_MEM;
-		params->hdr.size = tag_size(tag_mem32);
-
-		params->u.mem.start = bd->bi_dram[i].start;
-		params->u.mem.size = bd->bi_dram[i].size;
-
-		params = tag_next(params);
-	}
-}
-#endif /* CONFIG_SETUP_MEMORY_TAGS */
-
-static void setup_commandline_tag(bd_t *bd, char *commandline)
-{
-	char *p;
-
-	if (!commandline)
-		return;
-
-	/* eat leading white space */
-	for (p = commandline; *p == ' '; p++)
-		;
-
-	/* skip non-existent command lines so the kernel will still
-	 * use its default command line.
-	 */
-	if (*p == '\0')
-		return;
-
-	params->hdr.tag = ATAG_CMDLINE;
-	params->hdr.size =
-		(sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2;
-
-	strcpy(params->u.cmdline.cmdline, p)
-		;
-
-	params = tag_next(params);
-}
-
-#ifdef CONFIG_INITRD_TAG
-static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
-{
-	/* an ATAG_INITRD node tells the kernel where the compressed
-	 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
-	 */
-	params->hdr.tag = ATAG_INITRD2;
-	params->hdr.size = tag_size(tag_initrd);
-
-	params->u.initrd.start = initrd_start;
-	params->u.initrd.size = initrd_end - initrd_start;
-
-	params = tag_next(params);
-}
-#endif /* CONFIG_INITRD_TAG */
-
-#ifdef CONFIG_SERIAL_TAG
-void setup_serial_tag(struct tag **tmp)
-{
-	struct tag *params;
-	struct tag_serialnr serialnr;
-	void get_board_serial(struct tag_serialnr *serialnr);
-
-	params = *tmp;
-	get_board_serial(&serialnr);
-	params->hdr.tag = ATAG_SERIAL;
-	params->hdr.size = tag_size(tag_serialnr);
-	params->u.serialnr.low = serialnr.low;
-	params->u.serialnr.high = serialnr.high;
-	params = tag_next(params);
-	*tmp = params;
-}
-#endif
-
-#ifdef CONFIG_REVISION_TAG
-void setup_revision_tag(struct tag **in_params)
-{
-	u32 rev;
-	u32 get_board_rev(void);
-
-	rev = get_board_rev();
-	params->hdr.tag = ATAG_REVISION;
-	params->hdr.size = tag_size(tag_revision);
-	params->u.revision.rev = rev;
-	params = tag_next(params);
-}
-#endif  /* CONFIG_REVISION_TAG */
-
-static void setup_end_tag(bd_t *bd)
-{
-	params->hdr.tag = ATAG_NONE;
-	params->hdr.size = 0;
-}
-
-#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
diff --git a/arch/riscv/lib/interrupts.c b/arch/riscv/lib/interrupts.c
index 075db8b..923f752 100644
--- a/arch/riscv/lib/interrupts.c
+++ b/arch/riscv/lib/interrupts.c
@@ -63,7 +63,7 @@ __attribute__((weak)) void timer_interrupt(struct pt_regs *regs)
 
 static void _exit_trap(int code, uint epc, struct pt_regs *regs)
 {
-	static const char *exception_code[] = {
+	static const char * const exception_code[] = {
 		"Instruction address misaligned",
 		"Instruction access fault",
 		"Illegal instruction",