arm64: zynqmp: Prepare psu_init rework

Move generic functions to common location psu_spl_init.c. Function
declarations are added to private header.
These changes are done in connection to the fact that still files from
HDF can be copied over and compilation should pass.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/cpu/armv8/zynqmp/Makefile

@@ -9,3 +9,4 @@ obj-y	+= clk.o
 obj-y	+= cpu.o
 obj-$(CONFIG_MP)	+= mp.o
 obj-$(CONFIG_SPL_BUILD) += spl.o handoff.o
+obj-$(CONFIG_ZYNQMP_PSU_INIT_ENABLED)	+= psu_spl_init.o

arch/arm/cpu/armv8/zynqmp/psu_spl_init.c

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018 Xilinx, Inc.
+ *
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/psu_init_gpl.h>
+
+#define PSU_MASK_POLL_TIME 1100000
+
+int __maybe_unused mask_pollonvalue(unsigned long add, u32 mask, u32 value)
+{
+	int i = 0;
+
+	while ((__raw_readl(add) & mask) != value) {
+		if (i == PSU_MASK_POLL_TIME)
+			return 0;
+		i++;
+	}
+	return 1;
+}
+
+__weak int mask_poll(u32 add, u32 mask)
+{
+	int i = 0;
+	unsigned long addr = add;
+
+	while (!(__raw_readl(addr) & mask)) {
+		if (i == PSU_MASK_POLL_TIME)
+			return 0;
+		i++;
+	}
+	return 1;
+}
+
+__weak u32 mask_read(u32 add, u32 mask)
+{
+	unsigned long addr = add;
+
+	return __raw_readl(addr) & mask;
+}
+
+__weak void mask_delay(u32 delay)
+{
+	udelay(delay);
+}
+
+__weak void psu_mask_write(unsigned long offset, unsigned long mask,
+			   unsigned long val)
+{
+	unsigned long regval = 0;
+
+	regval = readl(offset);
+	regval &= ~(mask);
+	regval |= (val & mask);
+	writel(regval, offset);
+}
+
+__weak void prog_reg(unsigned long addr, unsigned long mask,
+		     unsigned long shift, unsigned long value)
+{
+	int rdata = 0;
+
+	rdata = readl(addr);
+	rdata = rdata & (~mask);
+	rdata = rdata | (value << shift);
+	writel(rdata, addr);
+}
+
+__weak int psu_init(void)
+{
+	/*
+	 * This function is overridden by the one in
+	 * board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists.
+	 */
+	return -1;
+}

arch/arm/cpu/armv8/zynqmp/spl.c

@@ -129,15 +129,6 @@ u32 spl_boot_mode(const u32 boot_device)
 	}
 }
 
-__weak int psu_init(void)
-{
-	/*
-	 * This function is overridden by the one in
-	 * board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists.
-	 */
-	return -1;
-}
-
 #ifdef CONFIG_SPL_OS_BOOT
 int spl_start_uboot(void)
 {

arch/arm/include/asm/arch-zynqmp/psu_init_gpl.h

@@ -0,0 +1,27 @@
+/*
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef _PSU_INIT_GPL_H_ /* prevent circular inclusions */
+#define _PSU_INIT_GPL_H_
+
+#include <asm/io.h>
+#include <common.h>
+
+int mask_pollonvalue(unsigned long add, u32 mask, u32 value);
+
+int mask_poll(u32 add, u32 mask);
+
+u32 mask_read(u32 add, u32 mask);
+
+void mask_delay(u32 delay);
+
+void psu_mask_write(unsigned long offset, unsigned long mask,
+		    unsigned long val);
+
+void prog_reg(unsigned long addr, unsigned long mask,
+	      unsigned long shift, unsigned long value);
+
+int psu_init(void);
+
+#endif /* _PSU_INIT_GPL_H_ */

arch/arm/include/asm/arch-zynqmp/sys_proto.h

@@ -33,8 +33,6 @@ enum {
 int zynq_board_read_rom_ethaddr(unsigned char *ethaddr);
 unsigned int zynqmp_get_silicon_version(void);
 
-int psu_init(void);
-
 void handoff_setup(void);
 
 void zynqmp_pmufw_version(void);

board/xilinx/zynqmp/zynqmp.c

@@ -13,6 +13,7 @@
 #include <asm/arch/clk.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/arch/psu_init_gpl.h>
 #include <asm/io.h>
 #include <usb.h>
 #include <dwc3-uboot.h>