[coreboot-gerrit] [S] Change in coreboot[main]: soc/mediatek/common: Get storage type from mainboard

[Yidi Lin (Code Review)]

Attention is currently required from: Hung-Te Lin, Yu-Ping Wu.

Yidi Lin has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/85878?usp=email )

Change subject: soc/mediatek/common: Get storage type from mainboard
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soc/mediatek/common: Get storage type from mainboard

Add common definitions and `mainboard_get_storage_type` API for
determining the storage type from mainboard.

TEST=emerge-rauru coreboot

Change-Id: I5dba2b54b29a701b825fb9bfcac74eb45a563d71
Signed-off-by: Yidi Lin 
---
A src/soc/mediatek/common/include/soc/storage.h
1 file changed, 24 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/78/85878/1

diff --git a/src/soc/mediatek/common/include/soc/storage.h b/src/soc/mediatek/common/include/soc/storage.h
new file mode 100644
index 0000000..d56ef6c
--- /dev/null
+++ b/src/soc/mediatek/common/include/soc/storage.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+
+#ifndef SOC_MEDIATEK_COMMON_STORAGE_H
+#define SOC_MEDIATEK_COMMON_STORAGE_H
+
+/* Bits [31:28] for base type (e.g. UFS, NvME). */
+#define _BASE_TYPE_SHIFT 28
+#define _BASE_TYPE_MASK (0xf << _BASE_TYPE_SHIFT)
+#define _BASE_TYPE(x) ((x & 0xf) << _BASE_TYPE_SHIFT)
+
+#define _BASE_TYPE_UFS _BASE_TYPE(0x0)
+#define _BASE_TYPE_NVME _BASE_TYPE(0x1)
+
+enum mtk_storage_type {
+	STORAGE_UNKNOWN   = 0,
+	STORAGE_UFS_31    = _BASE_TYPE_UFS | 0x310,
+	STORAGE_UFS_40    = _BASE_TYPE_UFS | 0x400,
+	STORAGE_UFS_40_HS = _BASE_TYPE_UFS | 0x401,
+	STORAGE_NVME      = _BASE_TYPE_NVME,
+};
+
+enum mtk_storage_type mainboard_get_storage_type(void);
+
+#endif /* SOC_MEDIATEK_COMMON_STORAGE_H */