1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/renesas/rzg/board/board.c b/drivers/renesas/rzg/board/board.c
new file mode 100644
index 0000000..7636372
--- /dev/null
+++ b/drivers/renesas/rzg/board/board.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2020-2021, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include <lib/mmio.h>
+#include <lib/utils_def.h>
+
+#include "board.h"
+#include "rcar_def.h"
+
+#ifndef BOARD_DEFAULT
+#if (RCAR_LSI == RZ_G2H)
+#define BOARD_DEFAULT		(BOARD_HIHOPE_RZ_G2H << BOARD_CODE_SHIFT)
+#elif (RCAR_LSI == RZ_G2N)
+#define BOARD_DEFAULT		(BOARD_HIHOPE_RZ_G2N << BOARD_CODE_SHIFT)
+#elif (RCAR_LSI == RZ_G2E)
+#define BOARD_DEFAULT		(BOARD_EK874_RZ_G2E << BOARD_CODE_SHIFT)
+#else
+#define BOARD_DEFAULT		(BOARD_HIHOPE_RZ_G2M << BOARD_CODE_SHIFT)
+#endif /* RCAR_LSI == RZ_G2H */
+#endif /* BOARD_DEFAULT */
+
+#define BOARD_CODE_MASK		(0xF8U)
+#define BOARD_REV_MASK		(0x07U)
+#define BOARD_CODE_SHIFT	(0x03)
+#define BOARD_ID_UNKNOWN	(0xFFU)
+
+#define GPIO_INDT5	0xE605500C
+#define GP5_19_BIT	(0x01U << 19)
+#define GP5_21_BIT	(0x01U << 21)
+#define GP5_25_BIT	(0x01U << 25)
+
+#define HM_ID	{ 0x10U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
+#define HH_ID	HM_ID
+#define HN_ID	{ 0x20U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
+#define EK_ID	HM_ID
+
+const char *g_board_tbl[] = {
+	[BOARD_HIHOPE_RZ_G2M] = "HiHope RZ/G2M",
+	[BOARD_HIHOPE_RZ_G2H] = "HiHope RZ/G2H",
+	[BOARD_HIHOPE_RZ_G2N] = "HiHope RZ/G2N",
+	[BOARD_EK874_RZ_G2E] = "EK874 RZ/G2E",
+	[BOARD_UNKNOWN] = "unknown"
+};
+
+void rzg_get_board_type(uint32_t *type, uint32_t *rev)
+{
+	static uint8_t board_id = BOARD_ID_UNKNOWN;
+	const uint8_t board_tbl[][8] = {
+		[BOARD_HIHOPE_RZ_G2M] = HM_ID,
+		[BOARD_HIHOPE_RZ_G2H] = HH_ID,
+		[BOARD_HIHOPE_RZ_G2N] = HN_ID,
+		[BOARD_EK874_RZ_G2E] = EK_ID,
+	};
+	uint32_t reg;
+#if (RCAR_LSI != RZ_G2E)
+	uint32_t boardInfo;
+#endif /* RCAR_LSI == RZ_G2E */
+
+	if (board_id == BOARD_ID_UNKNOWN) {
+		board_id = BOARD_DEFAULT;
+	}
+
+	*type = ((uint32_t) board_id & BOARD_CODE_MASK) >> BOARD_CODE_SHIFT;
+
+	if (*type >= ARRAY_SIZE(board_tbl)) {
+		/* no revision information, set Rev0.0. */
+		*rev = 0;
+		return;
+	}
+
+	reg = mmio_read_32(RCAR_PRR);
+#if (RCAR_LSI == RZ_G2E)
+	if (reg & RCAR_MINOR_MASK) {
+		*rev = 0x30U;
+	} else {
+		*rev = board_tbl[*type][(uint8_t)(board_id & BOARD_REV_MASK)];
+	}
+#else
+	if ((reg & PRR_CUT_MASK) == RCAR_M3_CUT_VER11) {
+		*rev = board_tbl[*type][(uint8_t)(board_id & BOARD_REV_MASK)];
+	} else {
+		reg = mmio_read_32(GPIO_INDT5);
+		if (reg & GP5_25_BIT) {
+			*rev = board_tbl[*type][(uint8_t)(board_id & BOARD_REV_MASK)];
+		} else {
+			boardInfo = reg & (GP5_19_BIT | GP5_21_BIT);
+			*rev = (((boardInfo & GP5_19_BIT) >> 14) |
+				((boardInfo & GP5_21_BIT) >> 17)) + 0x30U;
+		}
+	}
+#endif /* RCAR_LSI == RZ_G2E */
+}