zynqmp: Remove dependency on arm_helpers.S

Non-Arm platforms shouldn't use Arm platform code. This patch copies the
implementation of the functions in arm_helpers.S to zynqmp_helpers.S to
remove this dependency of zynqmp on Arm platforms.

Change-Id: Ia85f303c4c63bcf0ffa57c7f3ef9d88376729b6b
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

plat/xilinx/zynqmp/aarch64/zynqmp_helpers.S

 /*
- * Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -10,6 +10,12 @@
 
 	.globl	plat_secondary_cold_boot_setup
 	.globl	plat_is_my_cpu_primary
+	.globl	zynqmp_calc_core_pos
+	.globl	plat_my_core_pos
+	.globl	plat_crash_console_init
+	.globl	plat_crash_console_putc
+	.globl	plat_crash_console_flush
+	.globl	platform_mem_init
 
 	/* -----------------------------------------------------
 	 * void plat_secondary_cold_boot_setup (void);
@@ -47,3 +53,76 @@ func plat_is_my_cpu_primary
 	cset	x0, eq
 	ret	x9
 endfunc plat_is_my_cpu_primary
+
+	/* -----------------------------------------------------
+	 *  unsigned int plat_my_core_pos(void)
+	 *  This function uses the zynqmp_calc_core_pos()
+	 *  definition to get the index of the calling CPU.
+	 * -----------------------------------------------------
+	 */
+func plat_my_core_pos
+	mrs	x0, mpidr_el1
+	b	zynqmp_calc_core_pos
+endfunc plat_my_core_pos
+
+	/* -----------------------------------------------------
+	 *  unsigned int zynqmp_calc_core_pos(u_register_t mpidr)
+	 *  Helper function to calculate the core position.
+	 *  With this function: CorePos = (ClusterId * 4) +
+	 *  				  CoreId
+	 * -----------------------------------------------------
+	 */
+func zynqmp_calc_core_pos
+	and	x1, x0, #MPIDR_CPU_MASK
+	and	x0, x0, #MPIDR_CLUSTER_MASK
+	add	x0, x1, x0, LSR #6
+	ret
+endfunc zynqmp_calc_core_pos
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_init(void)
+	 * Function to initialize the crash console
+	 * without a C Runtime to print crash report.
+	 * Clobber list : x0 - x4
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_init
+	mov_imm	x0, ZYNQMP_CRASH_UART_BASE
+	mov_imm	x1, ZYNQMP_CRASH_UART_CLK_IN_HZ
+	mov_imm	x2, ZYNQMP_UART_BAUDRATE
+	b	console_core_init
+endfunc plat_crash_console_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_putc(int c)
+	 * Function to print a character on the crash
+	 * console without a C Runtime.
+	 * Clobber list : x1, x2
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_putc
+	mov_imm	x1, ZYNQMP_CRASH_UART_BASE
+	b	console_core_putc
+endfunc plat_crash_console_putc
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_flush()
+	 * Function to force a write of all buffered
+	 * data that hasn't been output.
+	 * Out : return -1 on error else return 0.
+	 * Clobber list : r0
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_flush
+	mov_imm	x0, ZYNQMP_CRASH_UART_BASE
+	b	console_core_flush
+endfunc plat_crash_console_flush
+
+	/* ---------------------------------------------------------------------
+	 * We don't need to carry out any memory initialization on ARM
+	 * platforms. The Secure RAM is accessible straight away.
+	 * ---------------------------------------------------------------------
+	 */
+func platform_mem_init
+	ret
+endfunc platform_mem_init

plat/xilinx/zynqmp/plat_zynqmp.c

 /*
- * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <plat_arm.h>
+#include <platform.h>
+#include "zynqmp_private.h"
 
 int plat_core_pos_by_mpidr(u_register_t mpidr)
 {
@@ -14,5 +15,5 @@ int plat_core_pos_by_mpidr(u_register_t mpidr)
 	if ((mpidr & MPIDR_CPU_MASK) >= PLATFORM_CORE_COUNT)
 		return -1;
 
-	return plat_arm_calc_core_pos(mpidr);
+	return zynqmp_calc_core_pos(mpidr);
 }

plat/xilinx/zynqmp/platform.mk

@@ -64,7 +64,6 @@ PLAT_BL_COMMON_SOURCES	:=	lib/xlat_tables/xlat_tables_common.c		\
 				drivers/arm/gic/v2/gicv2_helpers.c		\
 				drivers/cadence/uart/aarch64/cdns_console.S	\
 				drivers/console/aarch64/console.S		\
-				plat/arm/common/aarch64/arm_helpers.S		\
 				plat/arm/common/arm_cci.c			\
 				plat/arm/common/arm_common.c			\
 				plat/arm/common/arm_gicv2.c			\

plat/xilinx/zynqmp/zynqmp_def.h

@@ -145,13 +145,11 @@
 # error "invalid ZYNQMP_CONSOLE"
 #endif
 
-#define PLAT_ARM_CRASH_UART_BASE	ZYNQMP_UART_BASE
+#define ZYNQMP_CRASH_UART_BASE		ZYNQMP_UART_BASE
 /* impossible to call C routine how it is done now - hardcode any value */
-#define	PLAT_ARM_CRASH_UART_CLK_IN_HZ	100000000 /* FIXME */
-
+#define ZYNQMP_CRASH_UART_CLK_IN_HZ	100000000 /* FIXME */
 /* Must be non zero */
-#define ZYNQMP_UART_BAUDRATE	115200
-#define ARM_CONSOLE_BAUDRATE	ZYNQMP_UART_BAUDRATE
+#define ZYNQMP_UART_BAUDRATE		115200
 
 /* Silicon version detection */
 #define ZYNQMP_SILICON_VER_MASK		0xF000

plat/xilinx/zynqmp/zynqmp_private.h

 /*
- * Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -9,9 +9,12 @@
 
 #include <bl_common.h>
 #include <interrupt_mgmt.h>
+#include <stdint.h>
 
 void zynqmp_config_setup(void);
 
+unsigned int zynqmp_calc_core_pos(u_register_t mpidr);
+
 /* ZynqMP specific functions */
 unsigned int zynqmp_get_uart_clk(void);
 unsigned int zynqmp_get_bootmode(void);