soc/mediatek/mt8192: Add dramc param struct

Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Change-Id: I3bae57e6777ab6fc46c771a034f814dd1175be95
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44566
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/src/soc/mediatek/mt8192/dramc_param.c b/src/soc/mediatek/mt8192/dramc_param.c
new file mode 100644
index 0000000000..f8f6c7dd14
--- /dev/null
+++ b/src/soc/mediatek/mt8192/dramc_param.c
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <string.h>
+#include <soc/dramc_param.h>
+
+#define print(_x_...) printk(BIOS_INFO, _x_)
+
+struct dramc_param *get_dramc_param_from_blob(void *blob)
+{
+	return (struct dramc_param *)blob;
+}
+
+void dump_param_header(const void *blob)
+{
+	const struct dramc_param *dparam = blob;
+	const struct dramc_param_header *header = &dparam->header;
+
+	print("header.status = %#x\n", header->status);
+	print("header.version = %#x (expected: %#x)\n",
+	       header->version, DRAMC_PARAM_HEADER_VERSION);
+	print("header.size = %#x (expected: %#lx)\n",
+	       header->size, sizeof(*dparam));
+	print("header.flags = %#x\n", header->flags);
+	print("header.checksum = %#x\n", header->checksum);
+}
+
+int validate_dramc_param(const void *blob)
+{
+	const struct dramc_param *param = blob;
+	const struct dramc_param_header *hdr = &param->header;
+
+	if (hdr->version != DRAMC_PARAM_HEADER_VERSION)
+		return DRAMC_ERR_INVALID_VERSION;
+
+	if (hdr->size != sizeof(*param))
+		return DRAMC_ERR_INVALID_SIZE;
+
+	return DRAMC_SUCCESS;
+}
+
+int is_valid_dramc_param(const void *blob)
+{
+	return validate_dramc_param(blob) == DRAMC_SUCCESS;
+}
+
+int initialize_dramc_param(void *blob)
+{
+	struct dramc_param *param = blob;
+	struct dramc_param_header *hdr = &param->header;
+
+	memset(hdr, 0, sizeof(*hdr));
+	hdr->version = DRAMC_PARAM_HEADER_VERSION;
+	hdr->size = sizeof(*param);
+	return 0;
+}