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u-boot/board/freescale/p1_p2_rdb/ddr.c
Poonam Aggrwal 66c74fca18 powerpc/85xx: Optimized DDR settings for 800MT/s on P1/P2 RDB 
Changed the following DDR timing parameters for 800Mt/s:
tRRT    BL/2+1 to  BL/2
tWWT    BL/2+1 to  BL/2
tWRT    BL/2+1 to  BL/2
tRWT    BL/2+1 to  BL/2
REFINT  6500ns to  7800ns

Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-04-04 09:24:42 -05:00

245 lines
9.2 KiB
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/*
* Copyright 2009, 2011 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/mmu.h>
#include <asm/immap_85xx.h>
#include <asm/processor.h>
#include <asm/fsl_ddr_sdram.h>
#include <asm/io.h>
#include <asm/fsl_law.h>
DECLARE_GLOBAL_DATA_PTR;
#define CONFIG_SYS_DDR_CS0_BNDS 0x0000003F
#define CONFIG_SYS_DDR_CS0_CONFIG 0x80014202
#define CONFIG_SYS_DDR_CS0_CONFIG_2 0x00000000
#define CONFIG_SYS_DDR_INIT_ADDR 0x00000000
#define CONFIG_SYS_DDR_INIT_EXT_ADDR 0x00000000
#define CONFIG_SYS_DDR_MODE_CONTROL 0x00000000
#define CONFIG_SYS_DDR_ZQ_CONTROL 0x00000000
#define CONFIG_SYS_DDR_WRLVL_CONTROL 0x00000000
#define CONFIG_SYS_DDR_SR_CNTR 0x00000000
#define CONFIG_SYS_DDR_RCW_1 0x00000000
#define CONFIG_SYS_DDR_RCW_2 0x00000000
#define CONFIG_SYS_DDR_CONTROL 0x43000000 /* Type = DDR2*/
#define CONFIG_SYS_DDR_CONTROL_2 0x24401000
#define CONFIG_SYS_DDR_TIMING_4 0x00000000
#define CONFIG_SYS_DDR_TIMING_5 0x00000000
#define CONFIG_SYS_DDR_TIMING_3_400 0x00010000
#define CONFIG_SYS_DDR_TIMING_0_400 0x00260802
#define CONFIG_SYS_DDR_TIMING_1_400 0x39355322
#define CONFIG_SYS_DDR_TIMING_2_400 0x1f9048ca
#define CONFIG_SYS_DDR_CLK_CTRL_400 0x02800000
#define CONFIG_SYS_DDR_MODE_1_400 0x00480432
#define CONFIG_SYS_DDR_MODE_2_400 0x00000000
#define CONFIG_SYS_DDR_INTERVAL_400 0x06180100
#define CONFIG_SYS_DDR_TIMING_3_533 0x00020000
#define CONFIG_SYS_DDR_TIMING_0_533 0x00260802
#define CONFIG_SYS_DDR_TIMING_1_533 0x4c47c432
#define CONFIG_SYS_DDR_TIMING_2_533 0x0f9848ce
#define CONFIG_SYS_DDR_CLK_CTRL_533 0x02800000
#define CONFIG_SYS_DDR_MODE_1_533 0x00040642
#define CONFIG_SYS_DDR_MODE_2_533 0x00000000
#define CONFIG_SYS_DDR_INTERVAL_533 0x08200100
#define CONFIG_SYS_DDR_TIMING_3_667 0x00030000
#define CONFIG_SYS_DDR_TIMING_0_667 0x55770802
#define CONFIG_SYS_DDR_TIMING_1_667 0x5f599543
#define CONFIG_SYS_DDR_TIMING_2_667 0x0fa074d1
#define CONFIG_SYS_DDR_CLK_CTRL_667 0x03000000
#define CONFIG_SYS_DDR_MODE_1_667 0x00040852
#define CONFIG_SYS_DDR_MODE_2_667 0x00000000
#define CONFIG_SYS_DDR_INTERVAL_667 0x0a280100
#define CONFIG_SYS_DDR_TIMING_3_800 0x00040000
#define CONFIG_SYS_DDR_TIMING_0_800 0x00770802
#define CONFIG_SYS_DDR_TIMING_1_800 0x6f6b6543
#define CONFIG_SYS_DDR_TIMING_2_800 0x0fa074d1
#define CONFIG_SYS_DDR_CLK_CTRL_800 0x02800000
#define CONFIG_SYS_DDR_MODE_1_800 0x00040852
#define CONFIG_SYS_DDR_MODE_2_800 0x00000000
#define CONFIG_SYS_DDR_INTERVAL_800 0x0c300100
fsl_ddr_cfg_regs_t ddr_cfg_regs_400 = {
.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,
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_400,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_400,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_400,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_400,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_400,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_400,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_400,
.ddr_data_init = CONFIG_MEM_INIT_VALUE,
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_400,
.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
};
fsl_ddr_cfg_regs_t ddr_cfg_regs_533 = {
.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,
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_533,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_533,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_533,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_533,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_533,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_533,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_533,
.ddr_data_init = CONFIG_MEM_INIT_VALUE,
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_533,
.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
};
fsl_ddr_cfg_regs_t ddr_cfg_regs_667 = {
.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,
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_667,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_667,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_667,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_667,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_667,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_667,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_667,
.ddr_data_init = CONFIG_MEM_INIT_VALUE,
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_667,
.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
};
fsl_ddr_cfg_regs_t ddr_cfg_regs_800 = {
.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,
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_800,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_800,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_800,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_800,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_800,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_800,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_800,
.ddr_data_init = CONFIG_MEM_INIT_VALUE,
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_800,
.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
};
/*
* Fixed sdram init -- doesn't use serial presence detect.
*/
phys_size_t fixed_sdram (void)
{
char buf[32];
fsl_ddr_cfg_regs_t ddr_cfg_regs;
size_t ddr_size;
struct cpu_type *cpu;
ulong ddr_freq, ddr_freq_mhz;
cpu = gd->cpu;
/* P1020 and it's derivatives support max 32bit DDR width */
if (cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1020_E ||
cpu->soc_ver == SVR_P1011 || cpu->soc_ver == SVR_P1011_E) {
ddr_size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024 / 2);
} else {
ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
}
#if defined(CONFIG_SYS_RAMBOOT)
return ddr_size;
#endif
ddr_freq = get_ddr_freq(0);
ddr_freq_mhz = ddr_freq / 1000000;
printf("Configuring DDR for %s MT/s data rate\n",
strmhz(buf, ddr_freq));
if(ddr_freq_mhz <= 400)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_400, sizeof(ddr_cfg_regs));
else if(ddr_freq_mhz <= 533)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_533, sizeof(ddr_cfg_regs));
else if(ddr_freq_mhz <= 667)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_667, sizeof(ddr_cfg_regs));
else if(ddr_freq_mhz <= 800)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_800, sizeof(ddr_cfg_regs));
else
panic("Unsupported DDR data rate %s MT/s data rate\n",
strmhz(buf, ddr_freq));
/* P1020 and it's derivatives support max 32bit DDR width */
if(cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1020_E ||
cpu->soc_ver == SVR_P1011 || cpu->soc_ver == SVR_P1011_E) {
ddr_cfg_regs.ddr_sdram_cfg |= SDRAM_CFG_32_BE;
ddr_cfg_regs.cs[0].bnds = 0x0000001F;
}
fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
set_ddr_laws(0, ddr_size, LAW_TRGT_IF_DDR_1);
return ddr_size;
}
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