soc/mediatek/mt8183: Add the shared 'dramc_param' module

The dramc_param module simplifies the communication between coreboot and
MTK DRAM full calibration blob, and is shared by both implementations to
ensure the same format of parameters.

BUG=b:139099592
BRANCH=none
TEST=emerge-kukui coreboot

Change-Id: I4cfd634da1855a76706aab0b050197251e2ed4dd
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35775
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
This commit is contained in:
Yu-Ping Wu 2019-10-03 18:04:07 +08:00 committed by Patrick Georgi
parent 093d8ea323
commit 732e215dd8
3 changed files with 137 additions and 0 deletions

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@ -27,6 +27,7 @@ verstage-y += ../common/wdt.c
romstage-y += auxadc.c
romstage-y += ../common/cbmem.c emi.c
romstage-y += dramc_init_setting.c
romstage-y += dramc_param.c
romstage-y += dramc_pi_basic_api.c
romstage-y += dramc_pi_calibration_api.c
romstage-y += memory.c

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@ -0,0 +1,58 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2019 MediaTek Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <string.h>
#include "soc/dramc_param.h"
struct dramc_param *get_dramc_param_from_blob(void *blob)
{
return (struct dramc_param *)blob;
}
int validate_dramc_param(const void *blob)
{
const struct dramc_param *param = blob;
const struct dramc_param_header *hdr = &param->header;
if (hdr->magic != DRAMC_PARAM_HEADER_MAGIC)
return DRAMC_ERR_INVALID_MAGIC;
if (hdr->version != DRAMC_PARAM_HEADER_VERSION)
return DRAMC_ERR_INVALID_VERSION;
if (hdr->size != sizeof(*param))
return DRAMC_ERR_INVALID_SIZE;
/* TODO(hungte) Verify and check hdr->checksum. */
return DRAMC_SUCCESS;
}
int is_valid_dramc_param(const void *blob)
{
return validate_dramc_param(blob) == DRAMC_SUCCESS;
}
int initialize_dramc_param(void *blob, u16 config)
{
struct dramc_param *param = blob;
struct dramc_param_header *hdr = &param->header;
memset(blob, 0, sizeof(*param));
hdr->magic = DRAMC_PARAM_HEADER_MAGIC;
hdr->size = sizeof(*param);
hdr->version = DRAMC_PARAM_HEADER_VERSION;
hdr->config = config;
return 0;
}

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@ -0,0 +1,78 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2019 MediaTek Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef SOC_MEDIATEK_MT8183_DRAMC_PARAM_H
#define SOC_MEDIATEK_MT8183_DRAMC_PARAM_H
#include <stdint.h>
#include <sys/types.h>
#include "emi.h"
enum {
DRAMC_PARAM_HEADER_MAGIC = 0x44524d4b,
DRAMC_PARAM_HEADER_VERSION = 1,
};
enum DRAMC_PARAM_STATUS_CODES {
DRAMC_SUCCESS = 0,
DRAMC_ERR_INVALID_MAGIC,
DRAMC_ERR_INVALID_VERSION,
DRAMC_ERR_INVALID_SIZE,
DRAMC_ERR_INVALID_CHECKSUM,
DRAMC_ERR_INVALID_FLAGS,
DRAMC_ERR_RECALIBRATE,
DRAMC_ERR_INIT_DRAM,
DRAMC_ERR_COMPLEX_RW_MEM_TEST,
DRAMC_ERR_1ST_COMPLEX_RW_MEM_TEST,
DRAMC_ERR_2ND_COMPLEX_RW_MEM_TEST,
};
/* Bit flags */
enum DRAMC_PARAM_CONFIG {
DRAMC_CONFIG_EMCP = 0x0001,
};
enum DRAMC_PARAM_FLAGS {
DRAMC_FLAG_HAS_SAVED_DATA = 0x0001,
};
struct dramc_param_header {
u32 status; /* DRAMC_PARAM_STATUS_CODES */
u32 magic;
u32 version;
u32 size; /* size of whole dramc_param */
u16 config; /* DRAMC_PARAM_CONFIG */
u16 flags; /* DRAMC_PARAM_FLAGS */
u32 checksum;
};
struct dramc_param {
struct dramc_param_header header;
struct sdram_params freq_params[DRAM_DFS_SHUFFLE_MAX];
};
struct dramc_param_ops {
struct dramc_param *param;
bool (*read_from_flash)(struct dramc_param *dparam);
bool (*write_to_flash)(const struct dramc_param *dparam);
};
struct dramc_param *get_dramc_param_from_blob(void *blob);
int validate_dramc_param(const void *blob);
int is_valid_dramc_param(const void *blob);
int initialize_dramc_param(void *blob, u16 config);
#endif /* SOC_MEDIATEK_MT8183_DRAMC_PARAM_H */