FVP: Add Delay Timer driver to BL1 and BL31

SMMUv3 driver functions which are called from BL1 and BL31
currently use counter-based poll method for testing status
bits. Adding Delay Timer driver to BL1 and BL31 is required
for timeout-based implementation using timer delay functions
for SMMU and other drivers.
This patch adds new function `fvp_timer_init()` which
initialises either System level generic or SP804 timer based on
FVP_USE_SP804_TIMER build flag.
In BL2U `bl2u_early_platform_setup()` function the call to
`arm_bl2u_early_platform_setup()` (which calls
`generic_delay_timer_init()` ignoring FVP_USE_SP804_TIMER flag),
is replaced with `arm_console_boot_init()` and `fvp_timer_init()`.

Change-Id: Ifd8dcebf4019e877b9bc5641551deef77a44c0d1
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>

plat/arm/board/fvp/fvp_bl1_setup.c

@@ -48,6 +48,9 @@ void bl1_platform_setup(void)
 {
 	arm_bl1_platform_setup();
 
+	/* Initialize System level generic or SP804 timer */
+	fvp_timer_init();
+
 	/* On FVP RevC, initialize SMMUv3 */
 	if ((arm_config.flags & ARM_CONFIG_FVP_HAS_SMMUV3) != 0U)
 		smmuv3_security_init(PLAT_FVP_SMMUV3_BASE);

plat/arm/board/fvp/fvp_bl2_setup.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -25,15 +25,6 @@ void bl2_platform_setup(void)
 {
 	arm_bl2_platform_setup();
 
-#if FVP_USE_SP804_TIMER
-	/* Enable the clock override for SP804 timer 0, which means that no
-	 * clock dividers are applied and the raw (35 MHz) clock will be used */
-	mmio_write_32(V2M_SP810_BASE, FVP_SP810_CTRL_TIM0_OV);
-
-	/* Initialize delay timer driver using SP804 dual timer 0 */
-	sp804_timer_init(V2M_SP804_TIMER0_BASE,
-			SP804_TIMER_CLKMULT, SP804_TIMER_CLKDIV);
-#else
-	generic_delay_timer_init();
-#endif /* FVP_USE_SP804_TIMER */
+	/* Initialize System level generic or SP804 timer */
+	fvp_timer_init();
 }

plat/arm/board/fvp/fvp_bl2u_setup.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -14,6 +14,9 @@ void bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info)
 {
 	arm_bl2u_early_platform_setup(mem_layout, plat_info);
 
+	/* Initialize System level generic or SP804 timer */
+	fvp_timer_init();
+
 	/* Initialize the platform config for future decision making */
 	fvp_config_setup();
 }

plat/arm/board/fvp/fvp_bl31_setup.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -34,6 +34,9 @@ void __init bl31_early_platform_setup2(u_register_t arg0,
 	 */
 	fvp_interconnect_enable();
 
+	/* Initialize System level generic or SP804 timer */
+	fvp_timer_init();
+
 	/* On FVP RevC, initialize SMMUv3 */
 	if ((arm_config.flags & ARM_CONFIG_FVP_HAS_SMMUV3) != 0U)
 		smmuv3_init(PLAT_FVP_SMMUV3_BASE);

plat/arm/board/fvp/fvp_common.c

@@ -10,6 +10,8 @@
 #include <drivers/arm/cci.h>
 #include <drivers/arm/ccn.h>
 #include <drivers/arm/gicv2.h>
+#include <drivers/arm/sp804_delay_timer.h>
+#include <drivers/generic_delay_timer.h>
 #include <lib/mmio.h>
 #include <lib/xlat_tables/xlat_tables_compat.h>
 #include <plat/arm/common/arm_config.h>
@@ -407,3 +409,23 @@ int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
 	return arm_get_mbedtls_heap(heap_addr, heap_size);
 }
 #endif
+
+void fvp_timer_init(void)
+{
+#if FVP_USE_SP804_TIMER
+	/* Enable the clock override for SP804 timer 0, which means that no
+	 * clock dividers are applied and the raw (35MHz) clock will be used.
+	 */
+	mmio_write_32(V2M_SP810_BASE, FVP_SP810_CTRL_TIM0_OV);
+
+	/* Initialize delay timer driver using SP804 dual timer 0 */
+	sp804_timer_init(V2M_SP804_TIMER0_BASE,
+			SP804_TIMER_CLKMULT, SP804_TIMER_CLKDIV);
+#else
+	generic_delay_timer_init();
+
+	/* Enable System level generic timer */
+	mmio_write_32(ARM_SYS_CNTCTL_BASE + CNTCR_OFF,
+			CNTCR_FCREQ(0U) | CNTCR_EN);
+#endif /* FVP_USE_SP804_TIMER */
+}

plat/arm/board/fvp/fvp_private.h

@@ -18,6 +18,7 @@ void fvp_config_setup(void);
 void fvp_interconnect_init(void);
 void fvp_interconnect_enable(void);
 void fvp_interconnect_disable(void);
+void fvp_timer_init(void);
 void tsp_early_platform_setup(void);
 
 #endif /* FVP_PRIVATE_H */

plat/arm/board/fvp/platform.mk

@@ -127,6 +127,7 @@ endif
 
 BL1_SOURCES		+=	drivers/arm/smmu/smmu_v3.c			\
 				drivers/arm/sp805/sp805.c			\
+				drivers/delay_timer/delay_timer.c		\
 				drivers/io/io_semihosting.c			\
 				lib/semihosting/semihosting.c			\
 				lib/semihosting/${ARCH}/semihosting_call.S	\
@@ -138,6 +139,12 @@ BL1_SOURCES		+=	drivers/arm/smmu/smmu_v3.c			\
 				${FVP_CPU_LIBS}					\
 				${FVP_INTERCONNECT_SOURCES}
 
+ifeq (${FVP_USE_SP804_TIMER},1)
+BL1_SOURCES		+=	drivers/arm/sp804/sp804_delay_timer.c
+else
+BL1_SOURCES		+=	drivers/delay_timer/generic_delay_timer.c
+endif
+
 
 BL2_SOURCES		+=	drivers/arm/sp805/sp805.c			\
 				drivers/io/io_semihosting.c			\
@@ -167,8 +174,13 @@ endif
 BL2U_SOURCES		+=	plat/arm/board/fvp/fvp_bl2u_setup.c		\
 				${FVP_SECURITY_SOURCES}
 
+ifeq (${FVP_USE_SP804_TIMER},1)
+BL2U_SOURCES		+=	drivers/arm/sp804/sp804_delay_timer.c
+endif
+
 BL31_SOURCES		+=	drivers/arm/fvp/fvp_pwrc.c			\
 				drivers/arm/smmu/smmu_v3.c			\
+				drivers/delay_timer/delay_timer.c		\
 				drivers/cfi/v2m/v2m_flash.c			\
 				lib/utils/mem_region.c				\
 				plat/arm/board/fvp/fvp_bl31_setup.c		\
@@ -181,6 +193,12 @@ BL31_SOURCES		+=	drivers/arm/fvp/fvp_pwrc.c			\
 				${FVP_INTERCONNECT_SOURCES}			\
 				${FVP_SECURITY_SOURCES}
 
+ifeq (${FVP_USE_SP804_TIMER},1)
+BL31_SOURCES		+=	drivers/arm/sp804/sp804_delay_timer.c
+else
+BL31_SOURCES		+=	drivers/delay_timer/generic_delay_timer.c
+endif
+
 # Add the FDT_SOURCES and options for Dynamic Config (only for Unix env)
 ifdef UNIX_MK
 FVP_HW_CONFIG_DTS	:=	fdts/${FVP_DT_PREFIX}.dts