/*
* Copyright (C) 2017 Amlogic, Inc. All rights reserved.
* *
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; either version 2 of the License, or
* (at your option) any later version.
* *
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.
* *
You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* *
Description:
*/


#include <config.h>
#include <io.h>
#include <stdint.h>
#include <asm/arch/ddr_define.h>

/* io defines */
//#define wr_reg(addr, data)	(*((volatile uint32_t *)addr))=(uint32_t)(uint64_t)(data)
//#define rd_reg(addr)		(*((volatile uint32_t *)(addr)))
#define wr_reg(addr, data)	writel(data, addr)
#define rd_reg(addr)	readl(addr)
/*clear [mask] 0 bits in [addr], set these 0 bits with [value] corresponding bits*/
#define modify_reg(addr, value, mask) wr_reg(addr, ((rd_reg(addr) & (mask)) | (value)))
#define wait_set(addr, loc) do{}while(0 == (rd_reg(addr) & (1<<loc)));
#define wait_clr(addr, loc) do{}while(1 == (rd_reg(addr) & (1<<loc)));
#define wait_equal(addr, data) do{}while(data != (rd_reg(addr)));

/* function defines */
unsigned int ddr_init(unsigned int flag);
unsigned int ddr_init_pll(void);
unsigned int ddr_init_dmc(void);
unsigned int ddr_init_pctl(unsigned int flag);
unsigned int hot_boot(void);
void ddr_print_info(void);
void ddr_test(void);
void ddr_pre_init(void);
void ddr_debug(void);

/* pctl status */
#define  UPCTL_STAT_MASK        (7)
#define  UPCTL_STAT_INIT        (0)
#define  UPCTL_STAT_CONFIG      (1)
#define  UPCTL_STAT_ACCESS      (3)
#define  UPCTL_STAT_LOW_POWER   (5)

/* pctl cmds */
#define UPCTL_CMD_INIT         (0)
#define UPCTL_CMD_CONFIG       (1)
#define UPCTL_CMD_GO           (2)
#define UPCTL_CMD_SLEEP        (3)
#define UPCTL_CMD_WAKEUP       (4)

/* PUB PIR setting */
#define PUB_PIR_INIT						(1<<0)
#define PUB_PIR_ZCAL						(1<<1)
#define PUB_PIR_CA							(1<<2)
#define PUB_PIR_PLLINIT						(1<<4)
#define PUB_PIR_DCAL						(1<<5)
#define PUB_PIR_PHYRST						(1<<6)
#define PUB_PIR_DRAMRST						(1<<7)
#define PUB_PIR_DRAMINIT					(1<<8)
#define PUB_PIR_WL							(1<<9)
#define PUB_PIR_QSGATE						(1<<10)
#define PUB_PIR_WLADJ						(1<<11)
#define PUB_PIR_RDDSKW						(1<<12)
#define PUB_PIR_WRDSKW						(1<<13)
#define PUB_PIR_RDEYE						(1<<14)
#define PUB_PIR_WREYE						(1<<15)
#define PUB_PIR_ICPC						(1<<16)
#define PUB_PIR_PLLBYP						(1<<17)
#define PUB_PIR_CTLDINIT					(1<<18)
#define PUB_PIR_RDIMMINIT					(1<<19)
#define PUB_PIR_CLRSR						(1<<27)
#define PUB_PIR_LOCKBYP						(1<<28)
#define PUB_PIR_DCALBYP						(1<<29)
#define PUB_PIR_ZCALBYP						(1<<30)
#define PUB_PIR_INITBYP						(1<<31)

/* PHY initialize register (PIR) */
#define DDR_PIR ((PUB_PIR_ZCAL) 		|\
				(PUB_PIR_PLLINIT) 		|\
				(PUB_PIR_DCAL) 			|\
				(PUB_PIR_PHYRST)		|\
				(PUB_PIR_DRAMRST)		|\
				(PUB_PIR_DRAMINIT)		|\
				(PUB_PIR_WL)			|\
				(PUB_PIR_QSGATE)		|\
				(PUB_PIR_WLADJ)			|\
				(PUB_PIR_RDDSKW)		|\
				(PUB_PIR_WRDSKW)		|\
				(PUB_PIR_RDEYE)			|\
				(PUB_PIR_WREYE)			 \
				)

#define DDR_PIR_ONLY_WL ((PUB_PIR_ZCAL) 		|\
				(PUB_PIR_PLLINIT) 		|\
				(PUB_PIR_DCAL) 			|\
				(PUB_PIR_PHYRST)		|\
				(PUB_PIR_DRAMRST)		|\
				(PUB_PIR_DRAMINIT)		|\
				(PUB_PIR_WL)			\
				)

//#define CONFIG_DDR_ZQ_POWER_DOWN
//#define CONFIG_DDR_POWER_DOWN_PHY_VREF

/* PHY general status register (PGSR0) */
#define DDR_PGSR0_CHECK() ((rd_reg(DDR0_PUB_PGSR0) != 0xC0000fff) && \
							(rd_reg(DDR0_PUB_PGSR0) != 0x80000fff))
#define DDR_PGSR0_CHECK_LPDDR2()

#ifdef CONFIG_LPDDR3_CA_TRAINING
#define DDR_PGSR0_CHECK_LPDDR3() ((rd_reg(DDR0_PUB_PGSR0) != 0xC0001fbf) && \
							(rd_reg(DDR0_PUB_PGSR0) != 0xe0001fbf)&& \
							(rd_reg(DDR0_PUB_PGSR0) != 0xa0001fbf)&& \
							(rd_reg(DDR0_PUB_PGSR0) != 0x80001fbf))
#else
#define DDR_PGSR0_CHECK_LPDDR3() ((rd_reg(DDR0_PUB_PGSR0) != 0xC0000fbf) && \
							(rd_reg(DDR0_PUB_PGSR0) != 0xe0000fbf)&& \
							(rd_reg(DDR0_PUB_PGSR0) != 0xa0000fbf)&& \
							(rd_reg(DDR0_PUB_PGSR0) != 0x80000fbf))
#endif

/* other regs */
#define SCRATCH0				0xC1107D3C