u-boot/arch/arm/mach-mvebu/serdes/a38x/seq_exec.c
Kevin Smith 544acb07ec arm: mvebu: a38x: Remove unsupported topologies
A lot of extra configuration information was left over in the
Marvell serdes and DDR3 initialization code for boards that
U-boot does not support.  Remove this extra config information,
and the concept of fixing up board topologies with information
loaded from an EEPROM.  If this needs to be done, it should be
handled in the board file, not in core code.

Signed-off-by: Kevin Smith <kevin.smith@elecsyscorp.com>
Acked-by: Stefan Roese <sr@denx.de>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>
2015-11-17 23:41:41 +01:00

169 lines
3.9 KiB
C

/*
* 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 "seq_exec.h"
#include "high_speed_env_spec.h"
#include "../../../drivers/ddr/marvell/a38x/ddr3_init.h"
#if defined(MV_DEBUG_INIT_FULL) || defined(MV_DEBUG)
#define DB(x) x
#else
#define DB(x)
#endif
/* Array for mapping the operation (write, poll or delay) functions */
op_execute_func_ptr op_execute_func_arr[] = {
write_op_execute,
delay_op_execute,
poll_op_execute
};
int write_op_execute(u32 serdes_num, struct op_params *params, u32 data_arr_idx)
{
u32 unit_base_reg, unit_offset, data, mask, reg_data, reg_addr;
/* Getting write op params from the input parameter */
data = params->data[data_arr_idx];
mask = params->mask;
/* an empty operation */
if (data == NO_DATA)
return MV_OK;
/* get updated base address since it can be different between Serdes */
CHECK_STATUS(hws_get_ext_base_addr(serdes_num, params->unit_base_reg,
params->unit_offset,
&unit_base_reg, &unit_offset));
/* Address calculation */
reg_addr = unit_base_reg + unit_offset * serdes_num;
#ifdef SEQ_DEBUG
printf("Write: 0x%x: 0x%x (mask 0x%x) - ", reg_addr, data, mask);
#endif
/* Reading old value */
reg_data = reg_read(reg_addr);
reg_data &= (~mask);
/* Writing new data */
data &= mask;
reg_data |= data;
reg_write(reg_addr, reg_data);
#ifdef SEQ_DEBUG
printf(" - 0x%x\n", reg_data);
#endif
return MV_OK;
}
int delay_op_execute(u32 serdes_num, struct op_params *params, u32 data_arr_idx)
{
u32 delay;
/* Getting delay op params from the input parameter */
delay = params->wait_time;
#ifdef SEQ_DEBUG
printf("Delay: %d\n", delay);
#endif
mdelay(delay);
return MV_OK;
}
int poll_op_execute(u32 serdes_num, struct op_params *params, u32 data_arr_idx)
{
u32 unit_base_reg, unit_offset, data, mask, num_of_loops, wait_time;
u32 poll_counter = 0;
u32 reg_addr, reg_data;
/* Getting poll op params from the input parameter */
data = params->data[data_arr_idx];
mask = params->mask;
num_of_loops = params->num_of_loops;
wait_time = params->wait_time;
/* an empty operation */
if (data == NO_DATA)
return MV_OK;
/* get updated base address since it can be different between Serdes */
CHECK_STATUS(hws_get_ext_base_addr(serdes_num, params->unit_base_reg,
params->unit_offset,
&unit_base_reg, &unit_offset));
/* Address calculation */
reg_addr = unit_base_reg + unit_offset * serdes_num;
/* Polling */
#ifdef SEQ_DEBUG
printf("Poll: 0x%x: 0x%x (mask 0x%x)\n", reg_addr, data, mask);
#endif
do {
reg_data = reg_read(reg_addr) & mask;
poll_counter++;
udelay(wait_time);
} while ((reg_data != data) && (poll_counter < num_of_loops));
if ((poll_counter >= num_of_loops) && (reg_data != data)) {
DEBUG_INIT_S("poll_op_execute: TIMEOUT\n");
return MV_TIMEOUT;
}
return MV_OK;
}
enum mv_op get_cfg_seq_op(struct op_params *params)
{
if (params->wait_time == 0)
return WRITE_OP;
else if (params->num_of_loops == 0)
return DELAY_OP;
return POLL_OP;
}
int mv_seq_exec(u32 serdes_num, u32 seq_id)
{
u32 seq_idx;
struct op_params *seq_arr;
u32 seq_size;
u32 data_arr_idx;
enum mv_op curr_op;
DB(printf("\n### mv_seq_exec ###\n"));
DB(printf("seq id: %d\n", seq_id));
if (hws_is_serdes_active(serdes_num) != 1) {
printf("mv_seq_exec_ext:Error: SerDes lane %d is not valid\n",
serdes_num);
return MV_BAD_PARAM;
}
seq_arr = serdes_seq_db[seq_id].op_params_ptr;
seq_size = serdes_seq_db[seq_id].cfg_seq_size;
data_arr_idx = serdes_seq_db[seq_id].data_arr_idx;
DB(printf("seq_size: %d\n", seq_size));
DB(printf("data_arr_idx: %d\n", data_arr_idx));
/* Executing the sequence operations */
for (seq_idx = 0; seq_idx < seq_size; seq_idx++) {
curr_op = get_cfg_seq_op(&seq_arr[seq_idx]);
op_execute_func_arr[curr_op](serdes_num, &seq_arr[seq_idx],
data_arr_idx);
}
return MV_OK;
}