i.mx28: Replaced magic numbers for scratch register addresses with register definitions

This patch replaces the use of magice numbers for scratch register
addresses with earlier defined register definitions.

Signed-off-by: Robert Delien <robert@delien.nl>

arch/arm/cpu/arm926ejs/mx28/mx28.c

@@ -261,14 +261,14 @@ void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
 }
 #endif
 
-#define	HW_DIGCTRL_SCRATCH0	0x8001c280
-#define	HW_DIGCTRL_SCRATCH1	0x8001c290
 int mx28_dram_init(void)
 {
+	struct mx28_digctl_regs *digctl_regs =
+		(struct mx28_digctl_regs *)MXS_DIGCTL_BASE;
 	uint32_t sz[2];
 
-	sz[0] = readl(HW_DIGCTRL_SCRATCH0);
-	sz[1] = readl(HW_DIGCTRL_SCRATCH1);
+	sz[0] = readl(&digctl_regs->hw_digctl_scratch0);
+	sz[1] = readl(&digctl_regs->hw_digctl_scratch1);
 
 	if (sz[0] != sz[1]) {
 		printf("MX28:\n"

arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c

@@ -165,8 +165,6 @@ void mx28_mem_setup_vddd(void)
 		&power_regs->hw_power_vdddctrl);
 }
 
-#define	HW_DIGCTRL_SCRATCH0	0x8001c280
-#define	HW_DIGCTRL_SCRATCH1	0x8001c290
 void data_abort_memdetect_handler(void) __attribute__((naked));
 void data_abort_memdetect_handler(void)
 {
@@ -175,6 +173,8 @@ void data_abort_memdetect_handler(void)
 
 void mx28_mem_get_size(void)
 {
+	struct mx28_digctl_regs *digctl_regs =
+		(struct mx28_digctl_regs *)MXS_DIGCTL_BASE;
 	uint32_t sz, da;
 	uint32_t *vt = (uint32_t *)0x20;
 
@@ -183,8 +183,8 @@ void mx28_mem_get_size(void)
 	vt[4] = (uint32_t)&data_abort_memdetect_handler;
 
 	sz = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
-	writel(sz, HW_DIGCTRL_SCRATCH0);
-	writel(sz, HW_DIGCTRL_SCRATCH1);
+	writel(sz, &digctl_regs->hw_digctl_scratch0);
+	writel(sz, &digctl_regs->hw_digctl_scratch1);
 
 	/* Restore the old DABT handler. */
 	vt[4] = da;