From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/opensbi/lib/utils/timer/fdt_timer.c | 112 +++++++++++++++++++++++++
roms/opensbi/lib/utils/timer/fdt_timer_clint.c | 52 ++++++++++++
roms/opensbi/lib/utils/timer/objects.mk | 11 +++
3 files changed, 175 insertions(+)
create mode 100644 roms/opensbi/lib/utils/timer/fdt_timer.c
create mode 100644 roms/opensbi/lib/utils/timer/fdt_timer_clint.c
create mode 100644 roms/opensbi/lib/utils/timer/objects.mk
(limited to 'roms/opensbi/lib/utils/timer')
diff --git a/roms/opensbi/lib/utils/timer/fdt_timer.c b/roms/opensbi/lib/utils/timer/fdt_timer.c
new file mode 100644
index 000000000..d1d0e0ce1
--- /dev/null
+++ b/roms/opensbi/lib/utils/timer/fdt_timer.c
@@ -0,0 +1,112 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2020 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ * Anup Patel <anup.patel@wdc.com>
+ */
+
+#include <sbi/sbi_scratch.h>
+#include <sbi_utils/fdt/fdt_helper.h>
+#include <sbi_utils/timer/fdt_timer.h>
+
+extern struct fdt_timer fdt_timer_clint;
+
+static struct fdt_timer *timer_drivers[] = {
+ &fdt_timer_clint
+};
+
+static u64 dummy_value(void)
+{
+ return 0;
+}
+
+static void dummy_event_stop(void)
+{
+}
+
+static void dummy_event_start(u64 next_event)
+{
+}
+
+static struct fdt_timer dummy = {
+ .match_table = NULL,
+ .cold_init = NULL,
+ .warm_init = NULL,
+ .exit = NULL,
+ .value = dummy_value,
+ .event_stop = dummy_event_stop,
+ .event_start = dummy_event_start
+};
+
+static struct fdt_timer *current_driver = &dummy;
+
+u64 fdt_timer_value(void)
+{
+ return current_driver->value();
+}
+
+void fdt_timer_event_stop(void)
+{
+ current_driver->event_stop();
+}
+
+void fdt_timer_event_start(u64 next_event)
+{
+ current_driver->event_start(next_event);
+}
+
+void fdt_timer_exit(void)
+{
+ if (current_driver->exit)
+ current_driver->exit();
+}
+
+static int fdt_timer_warm_init(void)
+{
+ if (current_driver->warm_init)
+ return current_driver->warm_init();
+ return 0;
+}
+
+static int fdt_timer_cold_init(void)
+{
+ int pos, noff, rc;
+ struct fdt_timer *drv;
+ const struct fdt_match *match;
+ void *fdt = sbi_scratch_thishart_arg1_ptr();
+
+ for (pos = 0; pos < array_size(timer_drivers); pos++) {
+ drv = timer_drivers[pos];
+
+ noff = -1;
+ while ((noff = fdt_find_match(fdt, noff,
+ drv->match_table, &match)) >= 0) {
+ if (drv->cold_init) {
+ rc = drv->cold_init(fdt, noff, match);
+ if (rc)
+ return rc;
+ }
+ current_driver = drv;
+ }
+
+ if (current_driver != &dummy)
+ break;
+ }
+
+ return 0;
+}
+
+int fdt_timer_init(bool cold_boot)
+{
+ int rc;
+
+ if (cold_boot) {
+ rc = fdt_timer_cold_init();
+ if (rc)
+ return rc;
+ }
+
+ return fdt_timer_warm_init();
+}
diff --git a/roms/opensbi/lib/utils/timer/fdt_timer_clint.c b/roms/opensbi/lib/utils/timer/fdt_timer_clint.c
new file mode 100644
index 000000000..fe6670866
--- /dev/null
+++ b/roms/opensbi/lib/utils/timer/fdt_timer_clint.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2020 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ * Anup Patel <anup.patel@wdc.com>
+ */
+
+#include <sbi/sbi_error.h>
+#include <sbi_utils/fdt/fdt_helper.h>
+#include <sbi_utils/timer/fdt_timer.h>
+#include <sbi_utils/sys/clint.h>
+
+#define CLINT_TIMER_MAX_NR 16
+
+static unsigned long clint_timer_count = 0;
+static struct clint_data clint_timer[CLINT_TIMER_MAX_NR];
+
+static int timer_clint_cold_init(void *fdt, int nodeoff,
+ const struct fdt_match *match)
+{
+ int rc;
+ struct clint_data *ct, *ctmaster = NULL;
+
+ if (CLINT_TIMER_MAX_NR <= clint_timer_count)
+ return SBI_ENOSPC;
+ ct = &clint_timer[clint_timer_count++];
+ if (1 < clint_timer_count)
+ ctmaster = &clint_timer[0];
+
+ rc = fdt_parse_clint_node(fdt, nodeoff, TRUE, ct);
+ if (rc)
+ return rc;
+
+ return clint_cold_timer_init(ct, ctmaster);
+}
+
+static const struct fdt_match timer_clint_match[] = {
+ { .compatible = "riscv,clint0" },
+ { },
+};
+
+struct fdt_timer fdt_timer_clint = {
+ .match_table = timer_clint_match,
+ .cold_init = timer_clint_cold_init,
+ .warm_init = clint_warm_timer_init,
+ .exit = NULL,
+ .value = clint_timer_value,
+ .event_stop = clint_timer_event_stop,
+ .event_start = clint_timer_event_start,
+};
diff --git a/roms/opensbi/lib/utils/timer/objects.mk b/roms/opensbi/lib/utils/timer/objects.mk
new file mode 100644
index 000000000..1b84e926c
--- /dev/null
+++ b/roms/opensbi/lib/utils/timer/objects.mk
@@ -0,0 +1,11 @@
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (c) 2020 Western Digital Corporation or its affiliates.
+#
+# Authors:
+# Anup Patel <anup.patel@wdc.com>
+#
+
+libsbiutils-objs-y += timer/fdt_timer.o
+libsbiutils-objs-y += timer/fdt_timer_clint.o
--
cgit