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u-boot-brain/drivers/ddr/marvell/a38x/ddr3_a38x.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

742 lines
16 KiB
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/*
* Copyright (C) Marvell International Ltd. and its affiliates
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <i2c.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#include "ddr3_init.h"
#define A38X_NUMBER_OF_INTERFACES 5
#define SAR_DEV_ID_OFFS 27
#define SAR_DEV_ID_MASK 0x7
/* Termal Sensor Registers */
#define TSEN_STATE_REG 0xe4070
#define TSEN_STATE_OFFSET 31
#define TSEN_STATE_MASK (0x1 << TSEN_STATE_OFFSET)
#define TSEN_CONF_REG 0xe4074
#define TSEN_CONF_RST_OFFSET 8
#define TSEN_CONF_RST_MASK (0x1 << TSEN_CONF_RST_OFFSET)
#define TSEN_STATUS_REG 0xe4078
#define TSEN_STATUS_READOUT_VALID_OFFSET 10
#define TSEN_STATUS_READOUT_VALID_MASK (0x1 << \
TSEN_STATUS_READOUT_VALID_OFFSET)
#define TSEN_STATUS_TEMP_OUT_OFFSET 0
#define TSEN_STATUS_TEMP_OUT_MASK (0x3ff << TSEN_STATUS_TEMP_OUT_OFFSET)
static struct dfx_access interface_map[] = {
/* Pipe Client */
{ 0, 17 },
{ 1, 7 },
{ 1, 11 },
{ 0, 3 },
{ 1, 25 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 }
};
/* This array hold the board round trip delay (DQ and CK) per <interface,bus> */
struct trip_delay_element a38x_board_round_trip_delay_array[] = {
/* 1st board */
/* Interface bus DQS-delay CK-delay */
{ 3952, 5060 },
{ 3192, 4493 },
{ 4785, 6677 },
{ 3413, 7267 },
{ 4282, 6086 }, /* ECC PUP */
{ 3952, 5134 },
{ 3192, 4567 },
{ 4785, 6751 },
{ 3413, 7341 },
{ 4282, 6160 }, /* ECC PUP */
/* 2nd board */
/* Interface bus DQS-delay CK-delay */
{ 3952, 5060 },
{ 3192, 4493 },
{ 4785, 6677 },
{ 3413, 7267 },
{ 4282, 6086 }, /* ECC PUP */
{ 3952, 5134 },
{ 3192, 4567 },
{ 4785, 6751 },
{ 3413, 7341 },
{ 4282, 6160 } /* ECC PUP */
};
#ifdef STATIC_ALGO_SUPPORT
/* package trace */
static struct trip_delay_element a38x_package_round_trip_delay_array[] = {
/* IF BUS DQ_DELAY CK_DELAY */
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 }
};
static int a38x_silicon_delay_offset[] = {
/* board 0 */
0,
/* board 1 */
0,
/* board 2 */
0
};
#endif
static u8 a38x_bw_per_freq[DDR_FREQ_LIMIT] = {
0x3, /* DDR_FREQ_100 */
0x4, /* DDR_FREQ_400 */
0x4, /* DDR_FREQ_533 */
0x5, /* DDR_FREQ_667 */
0x5, /* DDR_FREQ_800 */
0x5, /* DDR_FREQ_933 */
0x5, /* DDR_FREQ_1066 */
0x3, /* DDR_FREQ_311 */
0x3, /* DDR_FREQ_333 */
0x4, /* DDR_FREQ_467 */
0x5, /* DDR_FREQ_850 */
0x5, /* DDR_FREQ_600 */
0x3, /* DDR_FREQ_300 */
0x5, /* DDR_FREQ_900 */
0x3, /* DDR_FREQ_360 */
0x5 /* DDR_FREQ_1000 */
};
static u8 a38x_rate_per_freq[DDR_FREQ_LIMIT] = {
/*TBD*/ 0x1, /* DDR_FREQ_100 */
0x2, /* DDR_FREQ_400 */
0x2, /* DDR_FREQ_533 */
0x2, /* DDR_FREQ_667 */
0x2, /* DDR_FREQ_800 */
0x3, /* DDR_FREQ_933 */
0x3, /* DDR_FREQ_1066 */
0x1, /* DDR_FREQ_311 */
0x1, /* DDR_FREQ_333 */
0x2, /* DDR_FREQ_467 */
0x2, /* DDR_FREQ_850 */
0x2, /* DDR_FREQ_600 */
0x1, /* DDR_FREQ_300 */
0x2, /* DDR_FREQ_900 */
0x1, /* DDR_FREQ_360 */
0x2 /* DDR_FREQ_1000 */
};
static u16 a38x_vco_freq_per_sar[] = {
666, /* 0 */
1332,
800,
1600,
1066,
2132,
1200,
2400,
1332,
1332,
1500,
1500,
1600, /* 12 */
1600,
1700,
1700,
1866,
1866,
1800, /* 18 */
2000,
2000,
4000,
2132,
2132,
2300,
2300,
2400,
2400,
2500,
2500,
800
};
u32 pipe_multicast_mask;
u32 dq_bit_map_2_phy_pin[] = {
1, 0, 2, 6, 9, 8, 3, 7, /* 0 */
8, 9, 1, 7, 2, 6, 3, 0, /* 1 */
3, 9, 7, 8, 1, 0, 2, 6, /* 2 */
1, 0, 6, 2, 8, 3, 7, 9, /* 3 */
0, 1, 2, 9, 7, 8, 3, 6, /* 4 */
};
static int ddr3_tip_a38x_set_divider(u8 dev_num, u32 if_id,
enum hws_ddr_freq freq);
/*
* Read temperature TJ value
*/
u32 ddr3_ctrl_get_junc_temp(u8 dev_num)
{
int reg = 0;
/* Initiates TSEN hardware reset once */
if ((reg_read(TSEN_CONF_REG) & TSEN_CONF_RST_MASK) == 0)
reg_bit_set(TSEN_CONF_REG, TSEN_CONF_RST_MASK);
mdelay(10);
/* Check if the readout field is valid */
if ((reg_read(TSEN_STATUS_REG) & TSEN_STATUS_READOUT_VALID_MASK) == 0) {
printf("%s: TSEN not ready\n", __func__);
return 0;
}
reg = reg_read(TSEN_STATUS_REG);
reg = (reg & TSEN_STATUS_TEMP_OUT_MASK) >> TSEN_STATUS_TEMP_OUT_OFFSET;
return ((((10000 * reg) / 21445) * 1000) - 272674) / 1000;
}
/*
* Name: ddr3_tip_a38x_get_freq_config.
* Desc:
* Args:
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_tip_a38x_get_freq_config(u8 dev_num, enum hws_ddr_freq freq,
struct hws_tip_freq_config_info
*freq_config_info)
{
if (a38x_bw_per_freq[freq] == 0xff)
return MV_NOT_SUPPORTED;
if (freq_config_info == NULL)
return MV_BAD_PARAM;
freq_config_info->bw_per_freq = a38x_bw_per_freq[freq];
freq_config_info->rate_per_freq = a38x_rate_per_freq[freq];
freq_config_info->is_supported = 1;
return MV_OK;
}
/*
* Name: ddr3_tip_a38x_pipe_enable.
* Desc:
* Args:
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_tip_a38x_pipe_enable(u8 dev_num, enum hws_access_type interface_access,
u32 if_id, int enable)
{
u32 data_value, pipe_enable_mask = 0;
if (enable == 0) {
pipe_enable_mask = 0;
} else {
if (interface_access == ACCESS_TYPE_MULTICAST)
pipe_enable_mask = pipe_multicast_mask;
else
pipe_enable_mask = (1 << interface_map[if_id].pipe);
}
CHECK_STATUS(ddr3_tip_reg_read
(dev_num, PIPE_ENABLE_ADDR, &data_value, MASK_ALL_BITS));
data_value = (data_value & (~0xff)) | pipe_enable_mask;
CHECK_STATUS(ddr3_tip_reg_write(dev_num, PIPE_ENABLE_ADDR, data_value));
return MV_OK;
}
/*
* Name: ddr3_tip_a38x_if_write.
* Desc:
* Args:
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_tip_a38x_if_write(u8 dev_num, enum hws_access_type interface_access,
u32 if_id, u32 reg_addr, u32 data_value,
u32 mask)
{
u32 ui_data_read;
if (mask != MASK_ALL_BITS) {
CHECK_STATUS(ddr3_tip_a38x_if_read
(dev_num, ACCESS_TYPE_UNICAST, if_id, reg_addr,
&ui_data_read, MASK_ALL_BITS));
data_value = (ui_data_read & (~mask)) | (data_value & mask);
}
reg_write(reg_addr, data_value);
return MV_OK;
}
/*
* Name: ddr3_tip_a38x_if_read.
* Desc:
* Args:
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_tip_a38x_if_read(u8 dev_num, enum hws_access_type interface_access,
u32 if_id, u32 reg_addr, u32 *data, u32 mask)
{
*data = reg_read(reg_addr) & mask;
return MV_OK;
}
/*
* Name: ddr3_tip_a38x_select_ddr_controller.
* Desc: Enable/Disable access to Marvell's server.
* Args: dev_num - device number
* enable - whether to enable or disable the server
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_tip_a38x_select_ddr_controller(u8 dev_num, int enable)
{
u32 reg;
reg = reg_read(CS_ENABLE_REG);
if (enable)
reg |= (1 << 6);
else
reg &= ~(1 << 6);
reg_write(CS_ENABLE_REG, reg);
return MV_OK;
}
/*
* Name: ddr3_tip_init_a38x_silicon.
* Desc: init Training SW DB.
* Args:
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
static int ddr3_tip_init_a38x_silicon(u32 dev_num, u32 board_id)
{
struct hws_tip_config_func_db config_func;
enum hws_ddr_freq ddr_freq;
int status;
struct hws_topology_map *tm = ddr3_get_topology_map();
/* new read leveling version */
config_func.tip_dunit_read_func = ddr3_tip_a38x_if_read;
config_func.tip_dunit_write_func = ddr3_tip_a38x_if_write;
config_func.tip_dunit_mux_select_func =
ddr3_tip_a38x_select_ddr_controller;
config_func.tip_get_freq_config_info_func =
ddr3_tip_a38x_get_freq_config;
config_func.tip_set_freq_divider_func = ddr3_tip_a38x_set_divider;
config_func.tip_get_device_info_func = ddr3_tip_a38x_get_device_info;
config_func.tip_get_temperature = ddr3_ctrl_get_junc_temp;
ddr3_tip_init_config_func(dev_num, &config_func);
ddr3_tip_register_dq_table(dev_num, dq_bit_map_2_phy_pin);
#ifdef STATIC_ALGO_SUPPORT
{
struct hws_tip_static_config_info static_config;
u32 board_offset =
board_id * A38X_NUMBER_OF_INTERFACES *
tm->num_of_bus_per_interface;
static_config.silicon_delay =
a38x_silicon_delay_offset[board_id];
static_config.package_trace_arr =
a38x_package_round_trip_delay_array;
static_config.board_trace_arr =
&a38x_board_round_trip_delay_array[board_offset];
ddr3_tip_init_static_config_db(dev_num, &static_config);
}
#endif
status = ddr3_tip_a38x_get_init_freq(dev_num, &ddr_freq);
if (MV_OK != status) {
DEBUG_TRAINING_ACCESS(DEBUG_LEVEL_ERROR,
("DDR3 silicon get target frequency - FAILED 0x%x\n",
status));
return status;
}
rl_version = 1;
mask_tune_func = (SET_LOW_FREQ_MASK_BIT |
LOAD_PATTERN_MASK_BIT |
SET_MEDIUM_FREQ_MASK_BIT | WRITE_LEVELING_MASK_BIT |
/* LOAD_PATTERN_2_MASK_BIT | */
WRITE_LEVELING_SUPP_MASK_BIT |
READ_LEVELING_MASK_BIT |
PBS_RX_MASK_BIT |
PBS_TX_MASK_BIT |
SET_TARGET_FREQ_MASK_BIT |
WRITE_LEVELING_TF_MASK_BIT |
WRITE_LEVELING_SUPP_TF_MASK_BIT |
READ_LEVELING_TF_MASK_BIT |
CENTRALIZATION_RX_MASK_BIT |
CENTRALIZATION_TX_MASK_BIT);
rl_mid_freq_wa = 1;
if ((ddr_freq == DDR_FREQ_333) || (ddr_freq == DDR_FREQ_400)) {
mask_tune_func = (WRITE_LEVELING_MASK_BIT |
LOAD_PATTERN_2_MASK_BIT |
WRITE_LEVELING_SUPP_MASK_BIT |
READ_LEVELING_MASK_BIT |
PBS_RX_MASK_BIT |
PBS_TX_MASK_BIT |
CENTRALIZATION_RX_MASK_BIT |
CENTRALIZATION_TX_MASK_BIT);
rl_mid_freq_wa = 0; /* WA not needed if 333/400 is TF */
}
/* Supplementary not supported for ECC modes */
if (1 == ddr3_if_ecc_enabled()) {
mask_tune_func &= ~WRITE_LEVELING_SUPP_TF_MASK_BIT;
mask_tune_func &= ~WRITE_LEVELING_SUPP_MASK_BIT;
mask_tune_func &= ~PBS_TX_MASK_BIT;
mask_tune_func &= ~PBS_RX_MASK_BIT;
}
if (ck_delay == -1)
ck_delay = 160;
if (ck_delay_16 == -1)
ck_delay_16 = 160;
ca_delay = 0;
delay_enable = 1;
calibration_update_control = 1;
init_freq = tm->interface_params[first_active_if].memory_freq;
ddr3_tip_a38x_get_medium_freq(dev_num, &medium_freq);
return MV_OK;
}
int ddr3_a38x_update_topology_map(u32 dev_num, struct hws_topology_map *tm)
{
u32 if_id = 0;
enum hws_ddr_freq freq;
ddr3_tip_a38x_get_init_freq(dev_num, &freq);
tm->interface_params[if_id].memory_freq = freq;
/*
* re-calc topology parameters according to topology updates
* (if needed)
*/
CHECK_STATUS(hws_ddr3_tip_load_topology_map(dev_num, tm));
return MV_OK;
}
int ddr3_tip_init_a38x(u32 dev_num, u32 board_id)
{
struct hws_topology_map *tm = ddr3_get_topology_map();
if (NULL == tm)
return MV_FAIL;
ddr3_a38x_update_topology_map(dev_num, tm);
ddr3_tip_init_a38x_silicon(dev_num, board_id);
return MV_OK;
}
int ddr3_tip_a38x_get_init_freq(int dev_num, enum hws_ddr_freq *freq)
{
u32 reg;
/* Read sample at reset setting */
reg = (reg_read(REG_DEVICE_SAR1_ADDR) >>
RST2_CPU_DDR_CLOCK_SELECT_IN_OFFSET) &
RST2_CPU_DDR_CLOCK_SELECT_IN_MASK;
switch (reg) {
case 0x0:
case 0x1:
*freq = DDR_FREQ_333;
break;
case 0x2:
case 0x3:
*freq = DDR_FREQ_400;
break;
case 0x4:
case 0xd:
*freq = DDR_FREQ_533;
break;
case 0x6:
*freq = DDR_FREQ_600;
break;
case 0x8:
case 0x11:
case 0x14:
*freq = DDR_FREQ_667;
break;
case 0xc:
case 0x15:
case 0x1b:
*freq = DDR_FREQ_800;
break;
case 0x10:
*freq = DDR_FREQ_933;
break;
case 0x12:
*freq = DDR_FREQ_900;
break;
case 0x13:
*freq = DDR_FREQ_900;
break;
default:
*freq = 0;
return MV_NOT_SUPPORTED;
}
return MV_OK;
}
int ddr3_tip_a38x_get_medium_freq(int dev_num, enum hws_ddr_freq *freq)
{
u32 reg;
/* Read sample at reset setting */
reg = (reg_read(REG_DEVICE_SAR1_ADDR) >>
RST2_CPU_DDR_CLOCK_SELECT_IN_OFFSET) &
RST2_CPU_DDR_CLOCK_SELECT_IN_MASK;
switch (reg) {
case 0x0:
case 0x1:
/* Medium is same as TF to run PBS in this freq */
*freq = DDR_FREQ_333;
break;
case 0x2:
case 0x3:
/* Medium is same as TF to run PBS in this freq */
*freq = DDR_FREQ_400;
break;
case 0x4:
case 0xd:
*freq = DDR_FREQ_533;
break;
case 0x8:
case 0x11:
case 0x14:
*freq = DDR_FREQ_333;
break;
case 0xc:
case 0x15:
case 0x1b:
*freq = DDR_FREQ_400;
break;
case 0x6:
*freq = DDR_FREQ_300;
break;
case 0x12:
*freq = DDR_FREQ_360;
break;
case 0x13:
*freq = DDR_FREQ_400;
break;
default:
*freq = 0;
return MV_NOT_SUPPORTED;
}
return MV_OK;
}
u32 ddr3_tip_get_init_freq(void)
{
enum hws_ddr_freq freq;
ddr3_tip_a38x_get_init_freq(0, &freq);
return freq;
}
static int ddr3_tip_a38x_set_divider(u8 dev_num, u32 if_id,
enum hws_ddr_freq frequency)
{
u32 divider = 0;
u32 sar_val;
if (if_id != 0) {
DEBUG_TRAINING_ACCESS(DEBUG_LEVEL_ERROR,
("A38x does not support interface 0x%x\n",
if_id));
return MV_BAD_PARAM;
}
/* get VCO freq index */
sar_val = (reg_read(REG_DEVICE_SAR1_ADDR) >>
RST2_CPU_DDR_CLOCK_SELECT_IN_OFFSET) &
RST2_CPU_DDR_CLOCK_SELECT_IN_MASK;
divider = a38x_vco_freq_per_sar[sar_val] / freq_val[frequency];
/* Set Sync mode */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0x20220, 0x0,
0x1000));
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe42f4, 0x0,
0x200));
/* cpupll_clkdiv_reset_mask */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4264, 0x1f,
0xff));
/* cpupll_clkdiv_reload_smooth */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4260,
(0x2 << 8), (0xff << 8)));
/* cpupll_clkdiv_relax_en */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4260,
(0x2 << 24), (0xff << 24)));
/* write the divider */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4268,
(divider << 8), (0x3f << 8)));
/* set cpupll_clkdiv_reload_ratio */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4264,
(1 << 8), (1 << 8)));
/* undet cpupll_clkdiv_reload_ratio */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4264, 0,
(1 << 8)));
/* clear cpupll_clkdiv_reload_force */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4260, 0,
(0xff << 8)));
/* clear cpupll_clkdiv_relax_en */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4260, 0,
(0xff << 24)));
/* clear cpupll_clkdiv_reset_mask */
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0xe4264, 0,
0xff));
/* Dunit training clock + 1:1 mode */
if ((frequency == DDR_FREQ_LOW_FREQ) || (freq_val[frequency] <= 400)) {
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0x18488,
(1 << 16), (1 << 16)));
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0x1524,
(0 << 15), (1 << 15)));
} else {
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0x18488,
0, (1 << 16)));
CHECK_STATUS(ddr3_tip_a38x_if_write
(dev_num, ACCESS_TYPE_UNICAST, if_id, 0x1524,
(1 << 15), (1 << 15)));
}
return MV_OK;
}
/*
* external read from memory
*/
int ddr3_tip_ext_read(u32 dev_num, u32 if_id, u32 reg_addr,
u32 num_of_bursts, u32 *data)
{
u32 burst_num;
for (burst_num = 0; burst_num < num_of_bursts * 8; burst_num++)
data[burst_num] = readl(reg_addr + 4 * burst_num);
return MV_OK;
}
/*
* external write to memory
*/
int ddr3_tip_ext_write(u32 dev_num, u32 if_id, u32 reg_addr,
u32 num_of_bursts, u32 *data) {
u32 burst_num;
for (burst_num = 0; burst_num < num_of_bursts * 8; burst_num++)
writel(data[burst_num], reg_addr + 4 * burst_num);
return MV_OK;
}
int ddr3_silicon_pre_init(void)
{
int result;
result = ddr3_silicon_init();
return result;
}
int ddr3_post_run_alg(void)
{
return MV_OK;
}
int ddr3_silicon_post_init(void)
{
struct hws_topology_map *tm = ddr3_get_topology_map();
/* Set half bus width */
if (DDR3_IS_16BIT_DRAM_MODE(tm->bus_act_mask)) {
CHECK_STATUS(ddr3_tip_if_write
(0, ACCESS_TYPE_UNICAST, PARAM_NOT_CARE,
REG_SDRAM_CONFIG_ADDR, 0x0, 0x8000));
}
return MV_OK;
}
int ddr3_tip_a38x_get_device_info(u8 dev_num, struct ddr3_device_info *info_ptr)
{
info_ptr->device_id = 0x6800;
info_ptr->ck_delay = ck_delay;
return MV_OK;
}
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