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u-boot/board/freescale/p1_p2_rdb/ddr.c
Poonam Aggrwal d3bee08332 85xx/p1_p2_rdb: Modify the CLK_CTRL value for DDR at 667MHz 
Use a slighly larger value of CLK_CTRL for DDR at 667MHz
which fixes random crashes while linux booting.

Applicable for both NAND and NOR boot.

Signed-off-by: Sandeep Gopalpet <sandeep.kumar@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
2010-06-29 21:01:07 +02:00

258 lines
9.4 KiB
C
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/*
* Copyright 2009 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;
extern void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
unsigned int ctrl_num);
#define DATARATE_400MHZ 400000000
#define DATARATE_533MHZ 533333333
#define DATARATE_667MHZ 666666666
#define DATARATE_800MHZ 800000000
#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 0x55770802
#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 0x0a280100
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)
{
sys_info_t sysinfo;
char buf[32];
fsl_ddr_cfg_regs_t ddr_cfg_regs;
size_t ddr_size;
struct cpu_type *cpu;
get_sys_info(&sysinfo);
printf("Configuring DDR for %s MT/s data rate\n",
strmhz(buf, sysinfo.freqDDRBus));
if(sysinfo.freqDDRBus <= DATARATE_400MHZ)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_400, sizeof(ddr_cfg_regs));
else if(sysinfo.freqDDRBus <= DATARATE_533MHZ)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_533, sizeof(ddr_cfg_regs));
else if(sysinfo.freqDDRBus <= DATARATE_667MHZ)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_667, sizeof(ddr_cfg_regs));
else if(sysinfo.freqDDRBus <= DATARATE_800MHZ)
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, sysinfo.freqDDRBus));
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_cfg_regs.ddr_sdram_cfg |= SDRAM_CFG_32_BE;
ddr_cfg_regs.cs[0].bnds = 0x0000001F;
ddr_size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024 / 2);
}
else
ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
return ddr_size;
}
phys_size_t initdram(int board_type)
{
phys_size_t dram_size = 0;
dram_size = fixed_sdram();
set_ddr_laws(0, dram_size, LAW_TRGT_IF_DDR_1);
dram_size = setup_ddr_tlbs(dram_size / 0x100000);
dram_size *= 0x100000;
puts("DDR: ");
return dram_size;
}
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