From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 11:13:47 +0200
Subject: Adding upstream version 2.8.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 plat/renesas/common/rcar_common.c | 99 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 plat/renesas/common/rcar_common.c

(limited to 'plat/renesas/common/rcar_common.c')

diff --git a/plat/renesas/common/rcar_common.c b/plat/renesas/common/rcar_common.c
new file mode 100644
index 0000000..df4c30c
--- /dev/null
+++ b/plat/renesas/common/rcar_common.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2019-2021, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <arch_helpers.h>
+#include <drivers/console.h>
+#include <lib/xlat_tables/xlat_mmu_helpers.h>
+#include <plat/common/platform.h>
+
+#include <lib/mmio.h>
+#include <cpg_registers.h>
+
+#define MSTP318			(1 << 18)
+#define MSTP319			(1 << 19)
+#define PMSR			0x5c
+#define PMSR_L1FAEG		(1U << 31)
+#define PMSR_PMEL1RX		(1 << 23)
+#define PMCTLR			0x60
+#define PMSR_L1IATN		(1U << 31)
+
+static int rcar_pcie_fixup(unsigned int controller)
+{
+	uint32_t rcar_pcie_base[] = { 0xfe011000, 0xee811000 };
+	uint32_t addr = rcar_pcie_base[controller];
+	uint32_t cpg, pmsr;
+	int ret = 0;
+
+	/* Test if PCIECx is enabled */
+	cpg = mmio_read_32(CPG_MSTPSR3);
+	if (cpg & (MSTP318 << !controller))
+		return ret;
+
+	pmsr = mmio_read_32(addr + PMSR);
+
+	if ((pmsr & PMSR_PMEL1RX) && ((pmsr & 0x70000) != 0x30000)) {
+		/* Fix applicable */
+		mmio_write_32(addr + PMCTLR, PMSR_L1IATN);
+		while (!(mmio_read_32(addr + PMSR) & PMSR_L1FAEG))
+			;
+		mmio_write_32(addr + PMSR, PMSR_L1FAEG | PMSR_PMEL1RX);
+		ret = 1;
+	}
+
+	return ret;
+}
+
+/* RAS functions common to AArch64 ARM platforms */
+void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
+		void *handle, uint64_t flags)
+{
+	unsigned int fixed = 0;
+
+	fixed |= rcar_pcie_fixup(0);
+	fixed |= rcar_pcie_fixup(1);
+
+	if (fixed)
+		return;
+
+	plat_default_ea_handler(ea_reason, syndrome, cookie, handle, flags);
+}
+
+#include <drivers/renesas/rcar/console/console.h>
+
+static console_t rcar_boot_console;
+static console_t rcar_runtime_console;
+
+void rcar_console_boot_init(void)
+{
+	int ret;
+
+	ret = console_rcar_register(0, 0, 0, &rcar_boot_console);
+	if (!ret)
+		panic();
+
+	console_set_scope(&rcar_boot_console, CONSOLE_FLAG_BOOT);
+}
+
+void rcar_console_boot_end(void)
+{
+}
+
+void rcar_console_runtime_init(void)
+{
+	int ret;
+
+	ret = console_rcar_register(1, 0, 0, &rcar_runtime_console);
+	if (!ret)
+		panic();
+
+	console_set_scope(&rcar_boot_console, CONSOLE_FLAG_RUNTIME);
+}
+
+void rcar_console_runtime_end(void)
+{
+}
-- 
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