MIPS: Netlogic: Add nlm_get_boot_data() helper

This moves the calculation and casting needed to access the CPU initialization
data to a function nlm_get_boot_data()
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5426/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/netlogic/common.h

@@ -59,13 +59,18 @@ int nlm_wakeup_secondary_cpus(void);
 void nlm_rmiboot_preboot(void);
 void nlm_percpu_init(int hwcpuid);
 
+static inline void *
+nlm_get_boot_data(int offset)
+{
+	return (void *)(CKSEG1ADDR(RESET_DATA_PHYS) + offset);
+}
+
 static inline void
 nlm_set_nmi_handler(void *handler)
 {
-	char *reset_data;
+	void *nmih = nlm_get_boot_data(BOOT_NMI_HANDLER);
 
-	reset_data = (char *)CKSEG1ADDR(RESET_DATA_PHYS);
-	*(int64_t *)(reset_data + BOOT_NMI_HANDLER) = (long)handler;
+	*(int64_t *)nmih = (long)handler;
 }
 
 /*

arch/mips/netlogic/common/smp.c

@@ -254,15 +254,15 @@ static int nlm_parse_cpumask(cpumask_t *wakeup_mask)
 
 int __cpuinit nlm_wakeup_secondary_cpus(void)
 {
-	char *reset_data;
+	u32 *reset_data;
 	int threadmode;
 
 	/* verify the mask and setup core config variables */
 	threadmode = nlm_parse_cpumask(&nlm_cpumask);
 
 	/* Setup CPU init parameters */
-	reset_data = (char *)CKSEG1ADDR(RESET_DATA_PHYS);
-	*(int *)(reset_data + BOOT_THREAD_MODE) = threadmode;
+	reset_data = nlm_get_boot_data(BOOT_THREAD_MODE);
+	*reset_data = threadmode;
 
 #ifdef CONFIG_CPU_XLP
 	xlp_wakeup_secondary_cpus();