vendor: mediatek: Add mediatek mt8192 dram initialization code

This is the DRAM initialization code from the reference
implementation released by Mediatek for MT8192.

The DRAM calibration code can be taken as a standalone
library, used by different boot loaders for initializing
DRAM and following a different coding style (coreboot was
using Linux Kernel coding style), so we have to put it
in vendor code folder.

Signed-off-by: Xi Chen <xixi.chen@mediatek.com>
Change-Id: I3853204578069c6abf52689ea6f5d88841414bd4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50294
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

1 files changed, 91 insertions, 0 deletions

diff --git a/src/vendorcode/mediatek/mt8192/include/dramc_common.h b/src/vendorcode/mediatek/mt8192/include/dramc_common.h
new file mode 100644
index 000000000000..04d07a025c53
--- /dev/null
+++ b/src/vendorcode/mediatek/mt8192/include/dramc_common.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+#ifndef _DRAMC_COMMON_H_
+#define _DRAMC_COMMON_H_
+
+#define __ETT__ 0
+
+//#include <console/console.h>
+#include <delay.h>
+#include <device/mmio.h>
+#include <stdint.h>
+#include <types.h>
+#include <reg.h>
+#include <string.h>
+#include <soc/dramc_common.h>
+#include <timer.h>
+#include <print.h>
+
+#include "dramc_register.h"
+#include "dramc_pi_api.h"
+#include "dramc_int_slt.h"
+
+#if FOR_DV_SIMULATION_USED == 1
+#include "dramc_dv_init.h"
+#endif
+
+/***********************************************************************/
+/*                  Public Types                                       */
+/***********************************************************************/
+
+/*------------------------------------------------------------*/
+/*                  macros, defines, typedefs, enums          */
+/*------------------------------------------------------------*/
+/************************** Common Macro *********************/
+#define dsb()		asm volatile("dsb sy" : : : "memory")
+
+#define DRV_Reg32(x)		read32((const void *)((u64)(x)))
+#define DRV_WriteReg32(x, y)	write32((void *)((u64)(x)), (y))
+
+#define mcDELAY_US(x)       udelay(x)
+#define mcDELAY_MS(x)       udelay(x*1000)
+#define mcDELAY_XUS(x)      udelay(x)
+#define mcDELAY_XNS(x)      udelay(1)
+
+/**********************************************/
+/* Priority of debug log                      */
+/*--------------------------------------------*/
+/* mcSHOW_DBG_MSG: High                       */
+/* mcSHOW_DBG_MSG2: Medium High               */
+/* mcSHOW_DBG_MSG3: Medium Low                */
+/* mcSHOW_DBG_MSG4: Low                       */
+/**********************************************/
+
+#define CALIBRATION_LOG		1
+
+#if CALIBRATION_LOG
+#define mcSHOW_DBG_MSG(_x_)	{print _x_;}
+#define mcSHOW_DBG_MSG2(_x_)	//{print _x_;}
+#define mcSHOW_ERR_MSG(_x_) 	{print _x_;}
+#else
+#define mcSHOW_DBG_MSG(_x_)
+#define mcSHOW_DBG_MSG2(_x_)
+#define mcSHOW_ERR_MSG(_x_)
+#endif
+
+#define mcSHOW_DBG_MSG3(_x_) // {print _x_;}
+#define mcSHOW_DBG_MSG4(_x_)
+#define mcSHOW_DBG_MSG5(_x_)
+#define mcSHOW_JV_LOG_MSG(_x_)
+#if EYESCAN_LOG
+#define mcSHOW_EYESCAN_MSG(_x_) {print _x_;}
+#else
+#define mcSHOW_EYESCAN_MSG(_x_) //{print _x_;}
+#endif
+#define mcSHOW_DBG_MSG5(_x_)
+#define mcSHOW_TIME_MSG(_x_)
+#define mcDUMP_REG_MSG(_x_)
+#define mcFPRINTF(_x_)
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(x)    (sizeof (x) / sizeof (x[0]))
+#endif
+
+#define enter_function() \
+	({mcSHOW_DBG_MSG(("enter %s\n", __FUNCTION__));})
+
+#define exit_function() \
+	({mcSHOW_DBG_MSG(("exit %s\n", __FUNCTION__));})
+
+extern int dump_log;
+#endif   // _DRAMC_COMMON_H_