plat: marvell: ap807: implement workaround for errata-id 3033912

ERRATA ID: RES-3033912 - Internal Address Space Init state causes
a hang upon accesses to [0xf070_0000, 0xf07f_ffff]
Workaround: Boot Firmware (ATF) should configure CCU_RGF_WIN(4) to
split [0x6e_0000, 0xff_ffff] to values [0x6e_0000, 0x6f_ffff] and
[0x80_0000, 0xff_ffff] that cause accesses to the segment of
[0xf070_0000, 0xf07f_ffff] to act as RAZWI. Reuse common
work-around code for both AP806 and AP807.

Change-Id: Ia91a4802d02917d1682faa0c81571093d1687d97
Signed-off-by: Stefan Chulski <stefanc@marvell.com>

drivers/marvell/ccu.c

@@ -30,6 +30,9 @@
 					((tgt) == DRAM_1_TID) || \
 					((tgt) == RAR_TID)) ? 1 : 0)
 
+#define CCU_RGF(win)			(MVEBU_CCU_BASE(MVEBU_AP0) +	\
+					 0x90 + 4 * (win))
+
 /* For storage of CR, SCR, ALR, AHR abd GCR */
 static uint32_t ccu_regs_save[MVEBU_CCU_MAX_WINS * 4 + 1];
 
@@ -366,3 +369,17 @@ int init_ccu(int ap_index)
 
 	return 0;
 }
+
+void errata_wa_init(void)
+{
+	/*
+	 * EERATA ID: RES-3033912 - Internal Address Space Init state causes
+	 * a hang upon accesses to [0xf070_0000, 0xf07f_ffff]
+	 * Workaround: Boot Firmware (ATF) should configure CCU_RGF_WIN(4) to
+	 * split [0x6e_0000, 0xff_ffff] to values [0x6e_0000, 0x6f_ffff] and
+	 * [0x80_0000, 0xff_ffff] that cause accesses to the
+	 * segment of [0xf070_0000, 0xf07f_ffff] to act as RAZWI.
+	 */
+	mmio_write_32(CCU_RGF(4), 0x37f9b809);
+	mmio_write_32(CCU_RGF(5), 0x7ffa0009);
+}

drivers/marvell/mochi/ap807_setup.c

@@ -117,6 +117,8 @@ static void init_aurora2(void)
 	reg |= (0x1 << CCU_SET_POC_OFFSET);
 	mmio_write_32(CCU_HTC_CR, reg);
 #endif /* LLC_ENABLE */
+
+	errata_wa_init();
 }
 
 

drivers/marvell/mochi/apn806_setup.c

@@ -28,9 +28,6 @@
 							0x200)
 #define CCU_SET_POC_OFFSET			5
 
-#define CCU_RGF(win)				(MVEBU_CCU_BASE(MVEBU_AP0) + \
-							0x90 + 4 * (win))
-
 #define DSS_CR0					(MVEBU_RFU_BASE + 0x100)
 #define DVM_48BIT_VA_ENABLE			(1 << 21)
 
@@ -95,20 +92,6 @@ static void setup_smmu(void)
 	mmio_write_32(SMMU_sACR, reg);
 }
 
-static void apn806_errata_wa_init(void)
-{
-	/*
-	 * ERRATA ID: RES-3033912 - Internal Address Space Init state causes
-	 * a hang upon accesses to [0xf070_0000, 0xf07f_ffff]
-	 * Workaround: Boot Firmware (ATF) should configure CCU_RGF_WIN(4) to
-	 * split [0x6e_0000, 0xff_ffff] to values [0x6e_0000, 0x6f_ffff] and
-	 * [0x80_0000, 0xff_ffff] that cause accesses to the
-	 * segment of [0xf070_0000, 0xf07f_ffff] to act as RAZWI.
-	 */
-	mmio_write_32(CCU_RGF(4), 0x37f9b809);
-	mmio_write_32(CCU_RGF(5), 0x7ffa0009);
-}
-
 static void init_aurora2(void)
 {
 	uint32_t reg;
@@ -131,7 +114,7 @@ static void init_aurora2(void)
 	mmio_write_32(CCU_HTC_CR, reg);
 #endif /* LLC_ENABLE */
 
-	apn806_errata_wa_init();
+	errata_wa_init();
 }
 
 

include/drivers/marvell/ccu.h

@@ -47,6 +47,7 @@ void ccu_dram_target_set(int ap_index, uint32_t target);
 void ccu_save_win_all(int ap_id);
 void ccu_restore_win_all(int ap_id);
 int ccu_is_win_enabled(int ap_index, uint32_t win_id);
+void errata_wa_init(void);
 #endif
 
 #endif /* CCU_H */