intel: Platform common code refactor
Pull out common code from agilex and stratix10
Signed-off-by: Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
Change-Id: Iddc0a9e6eccb30823d7b15615d5ce9c6bedb2abc
diff --git a/plat/intel/soc/common/socfpga_delay_timer.c b/plat/intel/soc/common/socfpga_delay_timer.c
new file mode 100644
index 0000000..ff8a556
--- /dev/null
+++ b/plat/intel/soc/common/socfpga_delay_timer.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <arch_helpers.h>
+#include <drivers/delay_timer.h>
+#include <lib/mmio.h>
+
+#define SOCFPGA_GLOBAL_TIMER 0xffd01000
+#define SOCFPGA_GLOBAL_TIMER_EN 0x3
+
+/********************************************************************
+ * The timer delay function
+ ********************************************************************/
+static uint32_t socfpga_get_timer_value(void)
+{
+ /*
+ * Generic delay timer implementation expects the timer to be a down
+ * counter. We apply bitwise NOT operator to the tick values returned
+ * by read_cntpct_el0() to simulate the down counter. The value is
+ * clipped from 64 to 32 bits.
+ */
+ return (uint32_t)(~read_cntpct_el0());
+}
+
+static const timer_ops_t plat_timer_ops = {
+ .get_timer_value = socfpga_get_timer_value,
+ .clk_mult = 1,
+ .clk_div = PLAT_SYS_COUNTER_FREQ_IN_MHZ,
+};
+
+void socfpga_delay_timer_init(void)
+{
+ timer_init(&plat_timer_ops);
+ mmio_write_32(SOCFPGA_GLOBAL_TIMER, SOCFPGA_GLOBAL_TIMER_EN);
+}