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/*
* Copyright 2018 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <asm/io.h>
#include <asm/arch/ddr.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx8m_ddr.h>
#include <asm/arch/lpddr4_define.h>
#define ddr_printf(args...) debug(args)
static inline void poll_pmu_message_ready(void)
{
unsigned int reg;
do {
reg = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+ 4*0xd0004);
} while (reg & 0x1);
}
static inline void ack_pmu_message_recieve(void)
{
unsigned int reg;
reg32_write(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+ 4*0xd0031, 0x0);
do {
reg = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+ 4*0xd0004);
} while (!(reg & 0x1));
reg32_write(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+ 4*0xd0031, 0x1);
}
static inline unsigned int get_mail(void)
{
unsigned int reg;
poll_pmu_message_ready();
reg = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+ 4*0xd0032);
ack_pmu_message_recieve();
return reg;
}
static inline unsigned int get_stream_message(void)
{
unsigned int reg, reg2;
poll_pmu_message_ready();
reg = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+ 4*0xd0032);
reg2 = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0)+ 4*0xd0034);
reg2 = (reg2 << 16) | reg;
ack_pmu_message_recieve();
return reg2;
}
static inline void decode_major_message(unsigned int mail)
{
ddr_printf("[PMU Major message = 0x%08x]\n", mail);
}
static inline void decode_streaming_message(void)
{
unsigned int string_index, arg __maybe_unused;
int i = 0;
string_index = get_stream_message();
ddr_printf("PMU String index = 0x%08x\n", string_index);
while (i < (string_index & 0xffff)){
arg = get_stream_message();
ddr_printf("arg[%d] = 0x%08x\n", i, arg);
i++;
}
ddr_printf("\n");
}
void wait_ddrphy_training_complete(void)
{
unsigned int mail;
while (1) {
mail = get_mail();
decode_major_message(mail);
if (mail == 0x08) {
decode_streaming_message();
} else if (mail == 0x07) {
printf("Training PASS\n");
break;
} else if (mail == 0xff) {
printf("Training FAILED\n");
break;
}
}
}
void ddrphy_init_set_dfi_clk(unsigned int drate)
{
switch (drate) {
case 3200:
dram_pll_init(DRAM_PLL_OUT_800M);
dram_disable_bypass();
break;
case 3000:
dram_pll_init(DRAM_PLL_OUT_750M);
dram_disable_bypass();
break;
case 2400:
dram_pll_init(DRAM_PLL_OUT_600M);
dram_disable_bypass();
break;
case 1600:
dram_pll_init(DRAM_PLL_OUT_400M);
dram_disable_bypass();
break;
case 667:
dram_pll_init(DRAM_PLL_OUT_167M);
dram_disable_bypass();
break;
case 400:
dram_enable_bypass(DRAM_BYPASSCLK_400M);
break;
case 100:
dram_enable_bypass(DRAM_BYPASSCLK_100M);
break;
default:
return;
}
}
void ddrphy_init_read_msg_block(enum fw_type type)
{
}
void lpddr4_mr_write(unsigned int mr_rank, unsigned int mr_addr, unsigned int mr_data)
{
unsigned int tmp;
/*
* 1. Poll MRSTAT.mr_wr_busy until it is 0.
* This checks that there is no outstanding MR transaction.
* No writes should be performed to MRCTRL0 and MRCTRL1 if
* MRSTAT.mr_wr_busy = 1.
*/
do {
tmp = reg32_read(DDRC_MRSTAT(0));
} while (tmp & 0x1);
/*
* 2. Write the MRCTRL0.mr_type, MRCTRL0.mr_addr, MRCTRL0.mr_rank and
* (for MRWs) MRCTRL1.mr_data to define the MR transaction.
*/
reg32_write(DDRC_MRCTRL0(0), (mr_rank << 4));
reg32_write(DDRC_MRCTRL1(0), (mr_addr << 8) | mr_data);
reg32setbit(DDRC_MRCTRL0(0), 31);
}
unsigned int lpddr4_mr_read(unsigned int mr_rank, unsigned int mr_addr)
{
unsigned int tmp;
reg32_write(DRC_PERF_MON_MRR0_DAT(0), 0x1);
do {
tmp = reg32_read(DDRC_MRSTAT(0));
} while (tmp & 0x1);
reg32_write(DDRC_MRCTRL0(0), (mr_rank << 4) | 0x1);
reg32_write(DDRC_MRCTRL1(0), (mr_addr << 8));
reg32setbit(DDRC_MRCTRL0(0), 31);
do {
tmp = reg32_read(DRC_PERF_MON_MRR0_DAT(0));
} while ((tmp & 0x8) == 0);
tmp = reg32_read(DRC_PERF_MON_MRR1_DAT(0));
tmp = tmp & 0xff;
reg32_write(DRC_PERF_MON_MRR0_DAT(0), 0x4);
return tmp;
}
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