wait_ddrphy_training_complete.c
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/*
* Copyright 2017 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 "ddr.h"
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_dbg("[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_dbg(" PMU String index = 0x%08x\n", string_index);
while (i < (string_index & 0xffff)) {
arg = get_stream_message();
ddr_dbg(" arg[%d] = 0x%08x\n", i, arg);
i++;
}
ddr_dbg("\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;
}
}
}