diff --git a/hw/arm-misc.h b/hw/arm-misc.h
index 010acb4cf9..9aeeaea759 100644
--- a/hw/arm-misc.h
+++ b/hw/arm-misc.h
@@ -31,7 +31,7 @@ struct arm_boot_info {
     target_phys_addr_t smp_priv_base;
     int nb_cpus;
     int board_id;
-    int (*atag_board)(struct arm_boot_info *info, void *p);
+    int (*atag_board)(const struct arm_boot_info *info, void *p);
     /* Used internally by arm_boot.c */
     int is_linux;
     target_phys_addr_t initrd_size;
diff --git a/hw/arm_boot.c b/hw/arm_boot.c
index bfac982e65..e0215768b1 100644
--- a/hw/arm_boot.c
+++ b/hw/arm_boot.c
@@ -49,7 +49,7 @@ static uint32_t smpboot[] = {
     p += 4;                       \
 } while (0)
 
-static void set_kernel_args(struct arm_boot_info *info,
+static void set_kernel_args(const struct arm_boot_info *info,
                 int initrd_size, target_phys_addr_t base)
 {
     target_phys_addr_t p;
@@ -102,7 +102,7 @@ static void set_kernel_args(struct arm_boot_info *info,
     WRITE_WORD(p, 0);
 }
 
-static void set_kernel_args_old(struct arm_boot_info *info,
+static void set_kernel_args_old(const struct arm_boot_info *info,
                 int initrd_size, target_phys_addr_t base)
 {
     target_phys_addr_t p;
@@ -178,7 +178,7 @@ static void set_kernel_args_old(struct arm_boot_info *info,
 static void do_cpu_reset(void *opaque)
 {
     CPUState *env = opaque;
-    struct arm_boot_info *info = env->boot_info;
+    const struct arm_boot_info *info = env->boot_info;
 
     cpu_reset(env);
     if (info) {
diff --git a/hw/nseries.c b/hw/nseries.c
index 2f6f473d64..2f84f5305b 100644
--- a/hw/nseries.c
+++ b/hw/nseries.c
@@ -1254,12 +1254,12 @@ static int n8x0_atag_setup(void *p, int model)
     return (void *) w - p;
 }
 
-static int n800_atag_setup(struct arm_boot_info *info, void *p)
+static int n800_atag_setup(const struct arm_boot_info *info, void *p)
 {
     return n8x0_atag_setup(p, 800);
 }
 
-static int n810_atag_setup(struct arm_boot_info *info, void *p)
+static int n810_atag_setup(const struct arm_boot_info *info, void *p)
 {
     return n8x0_atag_setup(p, 810);
 }
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 116131eef8..1022a03753 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -221,7 +221,7 @@ typedef struct CPUARMState {
         void *opaque;
     } cp[15];
     void *nvic;
-    struct arm_boot_info *boot_info;
+    const struct arm_boot_info *boot_info;
 } CPUARMState;
 
 CPUARMState *cpu_arm_init(const char *cpu_model);