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-rw-r--r--drivers/renesas/rzg/board/board.c64
-rw-r--r--drivers/renesas/rzg/board/board.h30
2 files changed, 94 insertions, 0 deletions
diff --git a/drivers/renesas/rzg/board/board.c b/drivers/renesas/rzg/board/board.c
new file mode 100644
index 0000000000..cfbb047194
--- /dev/null
+++ b/drivers/renesas/rzg/board/board.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2020, 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
+#define BOARD_DEFAULT (BOARD_HIHOPE_RZ_G2M << BOARD_CODE_SHIFT)
+#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 }
+
+const char *g_board_tbl[] = {
+ [BOARD_HIHOPE_RZ_G2M] = "HiHope RZ/G2M",
+ [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,
+ };
+ uint32_t reg, boardInfo;
+
+ 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;
+ } else {
+ reg = mmio_read_32(RCAR_PRR);
+ if ((reg & PRR_CUT_MASK) == RCAR_M3_CUT_VER11) {
+ *rev = board_tbl[*type][(uint8_t)(board_id & BOARD_REV_MASK)];
+ } else {
+ boardInfo = mmio_read_32(GPIO_INDT5) &
+ (GP5_19_BIT | GP5_21_BIT);
+ *rev = (((boardInfo & GP5_19_BIT) >> 14) |
+ ((boardInfo & GP5_21_BIT) >> 17)) + 0x30U;
+ }
+ }
+}
diff --git a/drivers/renesas/rzg/board/board.h b/drivers/renesas/rzg/board/board.h
new file mode 100644
index 0000000000..c0c3d0cda3
--- /dev/null
+++ b/drivers/renesas/rzg/board/board.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2020, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RZ_G2_BOARD_H
+#define RZ_G2_BOARD_H
+
+enum rzg2_board_id {
+ BOARD_HIHOPE_RZ_G2M = 0,
+ BOARD_UNKNOWN
+};
+
+#define BOARD_REV_UNKNOWN (0xFFU)
+
+extern const char *g_board_tbl[];
+
+/************************************************************************
+ * Revisions are expressed in 8 bits.
+ * The upper 4 bits are major version.
+ * The lower 4 bits are minor version.
+ ************************************************************************/
+#define GET_BOARD_MAJOR(a) ((uint32_t)(a) >> 0x4)
+#define GET_BOARD_MINOR(a) ((uint32_t)(a) & 0xF)
+#define GET_BOARD_NAME(a) (g_board_tbl[(a)])
+
+void rzg_get_board_type(uint32_t *type, uint32_t *rev);
+
+#endif /* RZ_G2_BOARD_H */