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u-boot/board/freescale/p1_p2_rdb_pc/ddr.c
Tom Rini 07ef80cd9d powerpc: Use the poison value of 0xdeadbeef directly in DDR init 
On p1_p2_rdb_pc platforms, we set ddr_data_init to the "poison" value of
0xdeadbeef rather than a real calculated / derived value.  Do this
directly and comment rather than via CONFIG.

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-07-08 17:57:34 -04:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2010-2011 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <vsprintf.h>
#include <asm/mmu.h>
#include <asm/immap_85xx.h>
#include <asm/processor.h>
#include <fsl_ddr_sdram.h>
#include <fsl_ddr_dimm_params.h>
#include <asm/io.h>
#include <asm/fsl_law.h>
#ifdef CONFIG_SYS_DDR_RAW_TIMING
#if defined(CONFIG_P1020RDB_PROTO)
/* Micron MT41J256M8_187E */
dimm_params_t ddr_raw_timing = {
.n_ranks = 1,
.rank_density = 1073741824u,
.capacity = 1073741824u,
.primary_sdram_width = 32,
.ec_sdram_width = 0,
.registered_dimm = 0,
.mirrored_dimm = 0,
.n_row_addr = 15,
.n_col_addr = 10,
.n_banks_per_sdram_device = 8,
.edc_config = 0,
.burst_lengths_bitmask = 0x0c,
.tckmin_x_ps = 1870,
.caslat_x = 0x1e << 4, /* 5,6,7,8 */
.taa_ps = 13125,
.twr_ps = 15000,
.trcd_ps = 13125,
.trrd_ps = 7500,
.trp_ps = 13125,
.tras_ps = 37500,
.trc_ps = 50625,
.trfc_ps = 160000,
.twtr_ps = 7500,
.trtp_ps = 7500,
.refresh_rate_ps = 7800000,
.tfaw_ps = 37500,
};
#elif defined(CONFIG_TARGET_P2020RDB)
/* Micron MT41J128M16_15E */
dimm_params_t ddr_raw_timing = {
.n_ranks = 1,
.rank_density = 1073741824u,
.capacity = 1073741824u,
.primary_sdram_width = 64,
.ec_sdram_width = 0,
.registered_dimm = 0,
.mirrored_dimm = 0,
.n_row_addr = 14,
.n_col_addr = 10,
.n_banks_per_sdram_device = 8,
.edc_config = 0,
.burst_lengths_bitmask = 0x0c,
.tckmin_x_ps = 1500,
.caslat_x = 0x7e << 4, /* 5,6,7,8,9,10 */
.taa_ps = 13500,
.twr_ps = 15000,
.trcd_ps = 13500,
.trrd_ps = 6000,
.trp_ps = 13500,
.tras_ps = 36000,
.trc_ps = 49500,
.trfc_ps = 160000,
.twtr_ps = 7500,
.trtp_ps = 7500,
.refresh_rate_ps = 7800000,
.tfaw_ps = 30000,
};
#elif (defined(CONFIG_TARGET_P1020MBG) || defined(CONFIG_TARGET_P1020RDB_PD))
/* Micron MT41J512M8_187E */
dimm_params_t ddr_raw_timing = {
.n_ranks = 2,
.rank_density = 1073741824u,
.capacity = 2147483648u,
.primary_sdram_width = 32,
.ec_sdram_width = 0,
.registered_dimm = 0,
.mirrored_dimm = 0,
.n_row_addr = 15,
.n_col_addr = 10,
.n_banks_per_sdram_device = 8,
.edc_config = 0,
.burst_lengths_bitmask = 0x0c,
.tckmin_x_ps = 1870,
.caslat_x = 0x1e << 4, /* 5,6,7,8 */
.taa_ps = 13125,
.twr_ps = 15000,
.trcd_ps = 13125,
.trrd_ps = 7500,
.trp_ps = 13125,
.tras_ps = 37500,
.trc_ps = 50625,
.trfc_ps = 160000,
.twtr_ps = 7500,
.trtp_ps = 7500,
.refresh_rate_ps = 7800000,
.tfaw_ps = 37500,
};
#elif defined(CONFIG_TARGET_P1020RDB_PC)
/*
* Samsung K4B2G0846C-HCF8
* The following timing are for "downshift"
* i.e. to use CL9 part as CL7
* otherwise, tAA, tRCD, tRP will be 13500ps
* and tRC will be 49500ps
*/
dimm_params_t ddr_raw_timing = {
.n_ranks = 1,
.rank_density = 1073741824u,
.capacity = 1073741824u,
.primary_sdram_width = 32,
.ec_sdram_width = 0,
.registered_dimm = 0,
.mirrored_dimm = 0,
.n_row_addr = 15,
.n_col_addr = 10,
.n_banks_per_sdram_device = 8,
.edc_config = 0,
.burst_lengths_bitmask = 0x0c,
.tckmin_x_ps = 1875,
.caslat_x = 0x1e << 4, /* 5,6,7,8 */
.taa_ps = 13125,
.twr_ps = 15000,
.trcd_ps = 13125,
.trrd_ps = 7500,
.trp_ps = 13125,
.tras_ps = 37500,
.trc_ps = 50625,
.trfc_ps = 160000,
.twtr_ps = 7500,
.trtp_ps = 7500,
.refresh_rate_ps = 7800000,
.tfaw_ps = 37500,
};
#elif defined(CONFIG_TARGET_P1024RDB)
/*
* Samsung K4B2G0846C-HCH9
* The following timing are for "downshift"
* i.e. to use CL9 part as CL7
* otherwise, tAA, tRCD, tRP will be 13500ps
* and tRC will be 49500ps
*/
dimm_params_t ddr_raw_timing = {
.n_ranks = 1,
.rank_density = 1073741824u,
.capacity = 1073741824u,
.primary_sdram_width = 32,
.ec_sdram_width = 0,
.registered_dimm = 0,
.mirrored_dimm = 0,
.n_row_addr = 15,
.n_col_addr = 10,
.n_banks_per_sdram_device = 8,
.edc_config = 0,
.burst_lengths_bitmask = 0x0c,
.tckmin_x_ps = 1500,
.caslat_x = 0x3e << 4, /* 5,6,7,8,9 */
.taa_ps = 13125,
.twr_ps = 15000,
.trcd_ps = 13125,
.trrd_ps = 6000,
.trp_ps = 13125,
.tras_ps = 36000,
.trc_ps = 49125,
.trfc_ps = 160000,
.twtr_ps = 7500,
.trtp_ps = 7500,
.refresh_rate_ps = 7800000,
.tfaw_ps = 30000,
};
#else
#error Missing raw timing data for this board
#endif
int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
unsigned int controller_number,
unsigned int dimm_number)
{
const char dimm_model[] = "Fixed DDR on board";
if ((controller_number == 0) && (dimm_number == 0)) {
memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
}
return 0;
}
#endif /* CONFIG_SYS_DDR_RAW_TIMING */
#ifdef CONFIG_SYS_DDR_CS0_BNDS
/* Fixed sdram init -- doesn't use serial presence detect. */
phys_size_t fixed_sdram(void)
{
sys_info_t sysinfo;
char buf[32];
size_t ddr_size;
fsl_ddr_cfg_regs_t ddr_cfg_regs = {
.cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
.cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
.cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
#if CONFIG_CHIP_SELECTS_PER_CTRL > 1
.cs[1].bnds = CONFIG_SYS_DDR_CS1_BNDS,
.cs[1].config = CONFIG_SYS_DDR_CS1_CONFIG,
.cs[1].config_2 = CONFIG_SYS_DDR_CS1_CONFIG_2,
#endif
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL,
.ddr_data_init = 0xdeadbeef, /* Poison value */
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL,
.ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
.ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
.timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
};
get_sys_info(&sysinfo);
printf("Configuring DDR for %s MT/s data rate\n",
strmhz(buf, sysinfo.freq_ddrbus));
ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0, 0);
if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE,
ddr_size, LAW_TRGT_IF_DDR_1) < 0) {
printf("ERROR setting Local Access Windows for DDR\n");
return 0;
};
return ddr_size;
}
#endif
void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num)
{
int i;
popts->clk_adjust = 6;
popts->cpo_override = 0x1f;
popts->write_data_delay = 2;
popts->half_strength_driver_enable = 1;
/* Write leveling override */
popts->wrlvl_en = 1;
popts->wrlvl_override = 1;
popts->wrlvl_sample = 0xf;
popts->wrlvl_start = 0x8;
popts->trwt_override = 1;
popts->trwt = 0;
if (pdimm->primary_sdram_width == 64)
popts->data_bus_width = 0;
else if (pdimm->primary_sdram_width == 32)
popts->data_bus_width = 1;
else
printf("Error in DDR bus width configuration!\n");
for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;
}
}
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