powerpc/km82xx: rework DIP switch detection

Introduce a struct for the BFTICU FPGA to increase the readability of
the code. And the define CONFIG_SYS_BFTICU_BASE was removed because
the CONFIG_SYS_FPGA_BASE is already the base value for BFTICU registers.

Signed-off-by: Andreas Huber <andreas.huber@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Acked-by: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>
cc: Detlev Zundel <dzu@denx.de>

board/keymile/common/common.h

@@ -39,6 +39,85 @@ struct km_bec_fpga {
 	unsigned char	pgy_eth;
 };
 
+#define BFTICU_DIPSWITCH_MASK   0x0f
+
+/*
+ * BFTICU FPGA iomap
+ * BFTICU is used on mgcoge and mgocge3ne
+ */
+struct bfticu_iomap {
+	u8	xi_ena;		/* General defect enable */
+	u8	pack1[3];
+	u8	en_csn;
+	u8	pack2;
+	u8	safe_mem;
+	u8	pack3;
+	u8	id;
+	u8	pack4;
+	u8	rev;
+	u8	build;
+	u8	p_frc;
+	u8	p_msk;
+	u8	pack5[2];
+	u8	xg_int;
+	u8	pack6[15];
+	u8	s_conf;
+	u8	pack7;
+	u8	dmx_conf12;
+	u8	pack8;
+	u8	s_clkslv;
+	u8	pack9[11];
+	u8	d_conf;
+	u8	d_mask_ca;
+	u8	d_pll_del;
+	u8	pack10[16];
+	u8	t_conf_ca;
+	u8	t_mask_ca;
+	u8	pack11[13];
+	u8	m_def0;
+	u8	m_def1;
+	u8	m_def2;
+	u8	m_def3;
+	u8	m_def4;
+	u8	m_def5;
+	u8	m_def_trap0;
+	u8	m_def_trap1;
+	u8	m_def_trap2;
+	u8	m_def_trap3;
+	u8	m_def_trap4;
+	u8	m_def_trap5;
+	u8	m_mask_def0;
+	u8	m_mask_def1;
+	u8	m_mask_def2;
+	u8	m_mask_def3;
+	u8	m_mask_def4;
+	u8	m_mask_def5;
+	u8	m_def_mask0;
+	u8	m_def_mask1;
+	u8	m_def_mask2;
+	u8	m_def_mask3;
+	u8	m_def_mask4;
+	u8	m_def_mask5;
+	u8	m_def_pri;
+	u8	pack12[11];
+	u8	hw_status;
+	u8	pack13;
+	u8	hw_control1;
+	u8	hw_control2;
+	u8	hw_control3;
+	u8	pack14[7];
+	u8	led_on;		/* Leds */
+	u8	pack15;
+	u8	sfp_control;	/* SFP modules */
+	u8	pack16;
+	u8	alarm_control;	/* Alarm output */
+	u8	pack17;
+	u8	icps;		/* ICN clock pulse shaping */
+	u8	mswitch;	/* Read mode switch */
+	u8	pack18[6];
+	u8	pb_dbug;
+};
+
 #if !defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
 #define CONFIG_PIGGY_MAC_ADRESS_OFFSET	0
 #endif

board/keymile/km82xx/km82xx.c

@@ -296,15 +296,14 @@ int checkboard(void)
 	return 0;
 }
 
-#define DIPSWITCH_OFFSET 0x89
-#define DIPSWITCH_MASK   0x0f
-
 int last_stage_init(void)
 {
+	struct bfticu_iomap *base =
+		(struct bfticu_iomap *)CONFIG_SYS_FPGA_BASE;
 	u8 dip_switch;
-	/* Dip switch */
-	dip_switch = readb(CONFIG_SYS_BFTICU_BASE + DIPSWITCH_OFFSET);
-	dip_switch &= DIPSWITCH_MASK;
+
+	dip_switch = in_8(&base->mswitch);
+	dip_switch &= BFTICU_DIPSWITCH_MASK;
 	/* dip switch 'full reset' or 'db erase' */
 	if (dip_switch & 0x1 || dip_switch & 0x2) {
 		/* start bootloader */

include/configs/mgcoge.h

@@ -61,7 +61,4 @@
 /* include further common stuff for all keymile 82xx boards */
 #include "km82xx-common.h"
 
-/* bfticu address */
-#define CONFIG_SYS_BFTICU_BASE          0x40000000
-
 #endif /* __CONFIG_H */