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u-boot/drivers/ddr/marvell/a38x/ddr3_training_bist.c
Stefan Roese f1df936445 arm: mvebu: Add Armada 38x DDR3 training code from Marvell bin_hdr 
This patch adds the DDR3 setup and training code taken from the Marvell
U-Boot repository. This code used to be included as a binary (bin_hdr)
into the Armada A38x boot image. Not linked with the main U-Boot. With this
code addition and the serdes/PHY setup code, the Armada A38x support
in mainline U-Boot is finally self-contained. So the complete image
for booting can be built from mainline U-Boot. Without any additional
external inclusion.

Note:
This code has undergone many hours (days!) of coding-style cleanup and
refactoring. It still is not checkpatch clean though, I'm afraid. As the
factoring of the code has so many levels of indentation that many lines
are longer than 80 chars.

Signed-off-by: Stefan Roese <sr@denx.de>
2015-07-23 10:38:44 +02:00

289 lines
7.8 KiB
C
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/*
* Copyright (C) Marvell International Ltd. and its affiliates
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#include "ddr3_init.h"
static u32 bist_offset = 32;
enum hws_pattern sweep_pattern = PATTERN_KILLER_DQ0;
static int ddr3_tip_bist_operation(u32 dev_num,
enum hws_access_type access_type,
u32 if_id,
enum hws_bist_operation oper_type);
/*
* BIST activate
*/
int ddr3_tip_bist_activate(u32 dev_num, enum hws_pattern pattern,
enum hws_access_type access_type, u32 if_num,
enum hws_dir direction,
enum hws_stress_jump addr_stress_jump,
enum hws_pattern_duration duration,
enum hws_bist_operation oper_type,
u32 offset, u32 cs_num, u32 pattern_addr_length)
{
u32 tx_burst_size;
u32 delay_between_burst;
u32 rd_mode, val;
u32 poll_cnt = 0, max_poll = 1000, i, start_if, end_if;
struct pattern_info *pattern_table = ddr3_tip_get_pattern_table();
u32 read_data[MAX_INTERFACE_NUM];
struct hws_topology_map *tm = ddr3_get_topology_map();
/* ODPG Write enable from BIST */
CHECK_STATUS(ddr3_tip_if_write(dev_num, access_type, if_num,
ODPG_DATA_CONTROL_REG, 0x1, 0x1));
/* ODPG Read enable/disable from BIST */
CHECK_STATUS(ddr3_tip_if_write(dev_num, access_type, if_num,
ODPG_DATA_CONTROL_REG,
(direction == OPER_READ) ?
0x2 : 0, 0x2));
CHECK_STATUS(ddr3_tip_load_pattern_to_odpg(dev_num, access_type, if_num,
pattern, offset));
CHECK_STATUS(ddr3_tip_if_write(dev_num, access_type, if_num,
ODPG_DATA_BUF_SIZE_REG,
pattern_addr_length, MASK_ALL_BITS));
tx_burst_size = (direction == OPER_WRITE) ?
pattern_table[pattern].tx_burst_size : 0;
delay_between_burst = (direction == OPER_WRITE) ? 2 : 0;
rd_mode = (direction == OPER_WRITE) ? 1 : 0;
CHECK_STATUS(ddr3_tip_configure_odpg
(dev_num, access_type, if_num, direction,
pattern_table[pattern].num_of_phases_tx, tx_burst_size,
pattern_table[pattern].num_of_phases_rx,
delay_between_burst,
rd_mode, cs_num, addr_stress_jump, duration));
CHECK_STATUS(ddr3_tip_if_write(dev_num, access_type, if_num,
ODPG_PATTERN_ADDR_OFFSET_REG,
offset, MASK_ALL_BITS));
if (oper_type == BIST_STOP) {
CHECK_STATUS(ddr3_tip_bist_operation(dev_num, access_type,
if_num, BIST_STOP));
} else {
CHECK_STATUS(ddr3_tip_bist_operation(dev_num, access_type,
if_num, BIST_START));
if (duration != DURATION_CONT) {
/*
* This pdelay is a WA, becuase polling fives "done"
* also the odpg did nmot finish its task
*/
if (access_type == ACCESS_TYPE_MULTICAST) {
start_if = 0;
end_if = MAX_INTERFACE_NUM - 1;
} else {
start_if = if_num;
end_if = if_num;
}
for (i = start_if; i <= end_if; i++) {
VALIDATE_ACTIVE(tm->
if_act_mask, i);
for (poll_cnt = 0; poll_cnt < max_poll;
poll_cnt++) {
CHECK_STATUS(ddr3_tip_if_read
(dev_num,
ACCESS_TYPE_UNICAST,
if_num, ODPG_BIST_DONE,
read_data,
MASK_ALL_BITS));
val = read_data[i];
if ((val & 0x1) == 0x0) {
/*
* In SOC type devices this bit
* is self clear so, if it was
* cleared all good
*/
break;
}
}
if (poll_cnt >= max_poll) {
DEBUG_TRAINING_BIST_ENGINE
(DEBUG_LEVEL_ERROR,
("Bist poll failure 2\n"));
CHECK_STATUS(ddr3_tip_if_write
(dev_num,
ACCESS_TYPE_UNICAST,
if_num,
ODPG_DATA_CONTROL_REG, 0,
MASK_ALL_BITS));
return MV_FAIL;
}
}
CHECK_STATUS(ddr3_tip_bist_operation
(dev_num, access_type, if_num, BIST_STOP));
}
}
CHECK_STATUS(ddr3_tip_if_write(dev_num, access_type, if_num,
ODPG_DATA_CONTROL_REG, 0,
MASK_ALL_BITS));
return MV_OK;
}
/*
* BIST read result
*/
int ddr3_tip_bist_read_result(u32 dev_num, u32 if_id,
struct bist_result *pst_bist_result)
{
int ret;
u32 read_data[MAX_INTERFACE_NUM];
struct hws_topology_map *tm = ddr3_get_topology_map();
if (IS_ACTIVE(tm->if_act_mask, if_id) == 0)
return MV_NOT_SUPPORTED;
DEBUG_TRAINING_BIST_ENGINE(DEBUG_LEVEL_TRACE,
("ddr3_tip_bist_read_result if_id %d\n",
if_id));
ret = ddr3_tip_if_read(dev_num, ACCESS_TYPE_UNICAST, if_id,
ODPG_BIST_FAILED_DATA_HI_REG, read_data,
MASK_ALL_BITS);
if (ret != MV_OK)
return ret;
pst_bist_result->bist_fail_high = read_data[if_id];
ret = ddr3_tip_if_read(dev_num, ACCESS_TYPE_UNICAST, if_id,
ODPG_BIST_FAILED_DATA_LOW_REG, read_data,
MASK_ALL_BITS);
if (ret != MV_OK)
return ret;
pst_bist_result->bist_fail_low = read_data[if_id];
ret = ddr3_tip_if_read(dev_num, ACCESS_TYPE_UNICAST, if_id,
ODPG_BIST_LAST_FAIL_ADDR_REG, read_data,
MASK_ALL_BITS);
if (ret != MV_OK)
return ret;
pst_bist_result->bist_last_fail_addr = read_data[if_id];
ret = ddr3_tip_if_read(dev_num, ACCESS_TYPE_UNICAST, if_id,
ODPG_BIST_DATA_ERROR_COUNTER_REG, read_data,
MASK_ALL_BITS);
if (ret != MV_OK)
return ret;
pst_bist_result->bist_error_cnt = read_data[if_id];
return MV_OK;
}
/*
* BIST flow - Activate & read result
*/
int hws_ddr3_run_bist(u32 dev_num, enum hws_pattern pattern, u32 *result,
u32 cs_num)
{
int ret;
u32 i = 0;
u32 win_base;
struct bist_result st_bist_result;
struct hws_topology_map *tm = ddr3_get_topology_map();
for (i = 0; i < MAX_INTERFACE_NUM; i++) {
VALIDATE_ACTIVE(tm->if_act_mask, i);
hws_ddr3_cs_base_adr_calc(i, cs_num, &win_base);
ret = ddr3_tip_bist_activate(dev_num, pattern,
ACCESS_TYPE_UNICAST,
i, OPER_WRITE, STRESS_NONE,
DURATION_SINGLE, BIST_START,
bist_offset + win_base,
cs_num, 15);
if (ret != MV_OK) {
printf("ddr3_tip_bist_activate failed (0x%x)\n", ret);
return ret;
}
ret = ddr3_tip_bist_activate(dev_num, pattern,
ACCESS_TYPE_UNICAST,
i, OPER_READ, STRESS_NONE,
DURATION_SINGLE, BIST_START,
bist_offset + win_base,
cs_num, 15);
if (ret != MV_OK) {
printf("ddr3_tip_bist_activate failed (0x%x)\n", ret);
return ret;
}
ret = ddr3_tip_bist_read_result(dev_num, i, &st_bist_result);
if (ret != MV_OK) {
printf("ddr3_tip_bist_read_result failed\n");
return ret;
}
result[i] = st_bist_result.bist_error_cnt;
}
return MV_OK;
}
/*
* Set BIST Operation
*/
static int ddr3_tip_bist_operation(u32 dev_num,
enum hws_access_type access_type,
u32 if_id, enum hws_bist_operation oper_type)
{
if (oper_type == BIST_STOP) {
CHECK_STATUS(ddr3_tip_if_write(dev_num, access_type, if_id,
ODPG_BIST_DONE, 1 << 8, 1 << 8));
} else {
CHECK_STATUS(ddr3_tip_if_write(dev_num, access_type, if_id,
ODPG_BIST_DONE, 1, 1));
}
return MV_OK;
}
/*
* Print BIST result
*/
void ddr3_tip_print_bist_res(void)
{
u32 dev_num = 0;
u32 i;
struct bist_result st_bist_result[MAX_INTERFACE_NUM];
int res;
struct hws_topology_map *tm = ddr3_get_topology_map();
for (i = 0; i < MAX_INTERFACE_NUM; i++) {
if (IS_ACTIVE(tm->if_act_mask, i) == 0)
continue;
res = ddr3_tip_bist_read_result(dev_num, i, &st_bist_result[i]);
if (res != MV_OK) {
DEBUG_TRAINING_BIST_ENGINE(
DEBUG_LEVEL_ERROR,
("ddr3_tip_bist_read_result failed\n"));
return;
}
}
DEBUG_TRAINING_BIST_ENGINE(
DEBUG_LEVEL_INFO,
("interface | error_cnt | fail_low | fail_high | fail_addr\n"));
for (i = 0; i < MAX_INTERFACE_NUM; i++) {
if (IS_ACTIVE(tm->if_act_mask, i) ==
0)
continue;
DEBUG_TRAINING_BIST_ENGINE(
DEBUG_LEVEL_INFO,
("%d | 0x%08x | 0x%08x | 0x%08x | 0x%08x\n",
i, st_bist_result[i].bist_error_cnt,
st_bist_result[i].bist_fail_low,
st_bist_result[i].bist_fail_high,
st_bist_result[i].bist_last_fail_addr));
}
}
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