sdram.c File Reference

#include "sdram.h"
#include <types.h>
#include <device/mmio.h>
#include <delay.h>
#include "clock.h"

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Functions
static void	config_vtp (int nr)
static void	config_sdram (const struct emif_regs *regs, int nr)
	Configure SDRAM. More...
static void	config_ddr_data (const struct ddr_data *data, int nr)
	Configure DDR DATA registers. More...
static void	config_io_ctrl (const struct ctrl_ioregs *ioregs)
static void	config_cmd_ctrl (const struct cmd_control *cmd, int nr)
	Configure DDR CMD control registers. More...
static uint32_t	get_emif_rev (uint32_t base)
static uint32_t	emif_sdram_type (uint32_t sdram_config)
static void	ext_phy_settings_swlvl (const struct emif_regs *regs, int nr)
static void	ext_phy_settings_hwlvl (const struct emif_regs *regs, int nr)
static void	config_ddr_phy (const struct emif_regs *regs, int nr)
	Configure DDR PHY. More...
static void	set_sdram_timings (const struct emif_regs *regs, int nr)
	Set SDRAM timings. More...
static void	ddr_pll_config (uint32_t ddrpll_m)
static void	enable_emif_clocks (void)
void	config_ddr (uint32_t pll, const struct ctrl_ioregs *ioregs, const struct ddr_data *data, const struct cmd_control *ctrl, const struct emif_regs *regs, int nr)

Variables
static struct vtp_reg *	vtpreg [2]
static struct emif_reg_struct *	emif_reg [2]
	Base address for EMIF instances. More...
static struct ddr_cmd_regs *	ddr_cmd_reg [2]
	Base addresses for DDR PHY cmd/data regs. More...
static struct ddr_data_regs *	ddr_data_reg [2]
static struct ddr_cmdtctrl *	ioctrl_reg = {(struct ddr_cmdtctrl *)DDR_CONTROL_BASE_ADDR}
	Base address for ddr io control instances. More...
struct ctrl_stat *	cstat = (struct ctrl_stat *)CTRL_BASE
static struct ddr_ctrl *	ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR

Function Documentation

config_cmd_ctrl()

static void config_cmd_ctrl ( const struct cmd_control *  cmd, int  nr  )

static

Configure DDR CMD control registers.

Definition at line 117 of file sdram.c.

References cmd_control::cmd0csratio, cmd_control::cmd0iclkout, cmd_control::cmd1csratio, cmd_control::cmd1iclkout, cmd_control::cmd2csratio, cmd_control::cmd2iclkout, ddr_cmd_reg, and write32().

Referenced by config_ddr().

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config_ddr()

void config_ddr	(	uint32_t	pll,
		const struct ctrl_ioregs *	ioregs,
		const struct ddr_data *	data,
		const struct cmd_control *	ctrl,
		const struct emif_regs *	regs,
		int	nr
	)

Definition at line 311 of file sdram.c.

References config_cmd_ctrl(), config_ddr_data(), config_ddr_phy(), config_io_ctrl(), config_sdram(), config_vtp(), DDR_CKE_CTRL_NORMAL, ddr_pll_config(), ddr_ctrl::ddrckectrl, ddrctrl, enable_emif_clocks(), set_sdram_timings(), and write32().

Referenced by main().

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config_ddr_data()

static void config_ddr_data ( const struct ddr_data *  data, int  nr  )

static

Configure DDR DATA registers.

Definition at line 84 of file sdram.c.

References ddr_data::datafwsratio0, ddr_data::datagiratio0, ddr_data::datardsratio0, ddr_data::datawdsratio0, ddr_data::datawiratio0, ddr_data::datawrsratio0, ddr_data_reg, DDR_DATA_REGS_NR, and write32().

Referenced by config_ddr().

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config_ddr_phy()

static void config_ddr_phy ( const struct emif_regs *  regs, int  nr  )

static

Configure DDR PHY.

Definition at line 234 of file sdram.c.

References EMIF_4D5, emif_reg_struct::emif_ddr_phy_ctrl_1, emif_reg_struct::emif_ddr_phy_ctrl_1_shdw, emif_reg, EMIF_REG_INITREF_DIS_MASK, emif_reg_struct::emif_sdram_ref_ctrl, emif_sdram_type(), EMIF_SDRAM_TYPE_DDR3, ext_phy_settings_hwlvl(), ext_phy_settings_swlvl(), get_emif_rev(), and write32().

Referenced by config_ddr().

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config_io_ctrl()

static void config_io_ctrl ( const struct ctrl_ioregs *  ioregs )

static

Definition at line 101 of file sdram.c.

References ctrl_ioregs::cm0ioctl, ddr_cmdtctrl::cm0ioctl, ctrl_ioregs::cm1ioctl, ddr_cmdtctrl::cm1ioctl, ctrl_ioregs::cm2ioctl, ddr_cmdtctrl::cm2ioctl, ctrl_ioregs::dt0ioctl, ddr_cmdtctrl::dt0ioctl, ctrl_ioregs::dt1ioctl, ddr_cmdtctrl::dt1ioctl, ioctrl_reg, and write32().

Referenced by config_ddr().

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config_sdram()

static void config_sdram ( const struct emif_regs *  regs, int  nr  )

static

Configure SDRAM.

Definition at line 56 of file sdram.c.

References cstat, emif_reg, ctrl_stat::secure_emif_sdram_config, udelay(), and write32().

Referenced by config_ddr().

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config_vtp()

static void config_vtp ( int  nr )

static

Definition at line 41 of file sdram.c.

References read32(), VTP_CTRL_ENABLE, VTP_CTRL_READY, VTP_CTRL_START_EN, vtpreg, and write32().

Referenced by config_ddr().

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ddr_pll_config()

static void ddr_pll_config ( uint32_t  ddrpll_m )

static

Definition at line 269 of file sdram.c.

References am335x_cm_wkup, CLK_DIV_SEL, CLK_MODE_MASK, CLK_MODE_SEL, CLK_SEL_MASK, CLK_SEL_SHIFT, am335x_cm_wkup_regs::clkmode_dpll_ddr, am335x_cm_wkup_regs::clksel_dpll_ddr, DDRPLL_M2, DDRPLL_N, am335x_cm_wkup_regs::div_m2_dpll_ddr, am335x_cm_wkup_regs::idlest_dpll_ddr, PLL_BYPASS_MODE, read32(), ST_DPLL_CLK, ST_MN_BYPASS, and write32().

Referenced by config_ddr().

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emif_sdram_type()

static uint32_t emif_sdram_type ( uint32_t  sdram_config )

inlinestatic

Definition at line 146 of file sdram.c.

References EMIF_REG_SDRAM_TYPE_MASK, and EMIF_REG_SDRAM_TYPE_SHIFT.

Referenced by config_ddr_phy().

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enable_emif_clocks()

static void enable_emif_clocks ( void  )

static

Definition at line 302 of file sdram.c.

References am335x_cm_per, CM_MODULEMODE_ENABLED, am335x_cm_per_regs::emif, read32(), and write32().

Referenced by config_ddr().

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ext_phy_settings_hwlvl()

static void ext_phy_settings_hwlvl ( const struct emif_regs *  regs, int  nr  )

static

Definition at line 174 of file sdram.c.

References emif_reg_struct::emif_ddr_ext_phy_ctrl_1, emif_reg_struct::emif_ddr_ext_phy_ctrl_1_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_22, emif_reg_struct::emif_ddr_ext_phy_ctrl_22_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_23, emif_reg_struct::emif_ddr_ext_phy_ctrl_23_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_24, emif_reg_struct::emif_ddr_ext_phy_ctrl_24_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_25, emif_reg_struct::emif_ddr_ext_phy_ctrl_25_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_26, emif_reg_struct::emif_ddr_ext_phy_ctrl_26_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_27, emif_reg_struct::emif_ddr_ext_phy_ctrl_27_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_28, emif_reg_struct::emif_ddr_ext_phy_ctrl_28_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_29, emif_reg_struct::emif_ddr_ext_phy_ctrl_29_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_30, emif_reg_struct::emif_ddr_ext_phy_ctrl_30_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_31, emif_reg_struct::emif_ddr_ext_phy_ctrl_31_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_32, emif_reg_struct::emif_ddr_ext_phy_ctrl_32_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_33, emif_reg_struct::emif_ddr_ext_phy_ctrl_33_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_34, emif_reg_struct::emif_ddr_ext_phy_ctrl_34_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_35, emif_reg_struct::emif_ddr_ext_phy_ctrl_35_shdw, emif_reg_struct::emif_ddr_ext_phy_ctrl_36, emif_reg_struct::emif_ddr_ext_phy_ctrl_36_shdw, emif_reg_struct::emif_iodft_tlgc, emif_reg, and write32().

Referenced by config_ddr_phy().

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ext_phy_settings_swlvl()

static void ext_phy_settings_swlvl ( const struct emif_regs *  regs, int  nr  )

static

Definition at line 154 of file sdram.c.

References emif_reg_struct::emif_ddr_ext_phy_ctrl_1, EMIF_EXT_PHY_CTRL_TIMING_REG, emif_reg, and write32().

Referenced by config_ddr_phy().

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get_emif_rev()

static uint32_t get_emif_rev ( uint32_t  base )

inlinestatic

Definition at line 132 of file sdram.c.

References base, emif_reg_struct::emif_mod_id_rev, EMIF_REG_MAJOR_REVISION_MASK, EMIF_REG_MAJOR_REVISION_SHIFT, and read32().

Referenced by config_ddr_phy().

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set_sdram_timings()

static void set_sdram_timings ( const struct emif_regs *  regs, int  nr  )

static

Set SDRAM timings.

Definition at line 259 of file sdram.c.

References emif_reg, emif_reg_struct::emif_sdram_tim_1, emif_reg_struct::emif_sdram_tim_1_shdw, emif_reg_struct::emif_sdram_tim_2, emif_reg_struct::emif_sdram_tim_2_shdw, emif_reg_struct::emif_sdram_tim_3, emif_reg_struct::emif_sdram_tim_3_shdw, and write32().

Referenced by config_ddr().

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Variable Documentation

cstat

struct ctrl_stat* cstat = (struct ctrl_stat *)CTRL_BASE

Definition at line 36 of file sdram.c.

Referenced by config_sdram().

ddr_cmd_reg

struct ddr_cmd_regs* ddr_cmd_reg[2]

static

Initial value:

= {(struct ddr_cmd_regs *)DDR_PHY_CMD_ADDR,
                                              (struct ddr_cmd_regs *)DDR_PHY_CMD_ADDR2}

Base addresses for DDR PHY cmd/data regs.

Definition at line 25 of file sdram.c.

Referenced by config_cmd_ctrl().

ddr_data_reg

struct ddr_data_regs* ddr_data_reg[2]

static

Initial value:

= {(struct ddr_data_regs *)DDR_PHY_DATA_ADDR,
                                                (struct ddr_data_regs *)DDR_PHY_DATA_ADDR2}

Definition at line 28 of file sdram.c.

Referenced by config_ddr_data().

ddrctrl

struct ddr_ctrl* ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR

static

Definition at line 38 of file sdram.c.

Referenced by config_ddr().

emif_reg

struct emif_reg_struct* emif_reg[2]

static

Initial value:

= {(struct emif_reg_struct *)EMIF4_0_CFG_BASE,
                                              (struct emif_reg_struct *)EMIF4_1_CFG_BASE}

Base address for EMIF instances.

Definition at line 19 of file sdram.c.

Referenced by config_ddr_phy(), config_sdram(), ext_phy_settings_hwlvl(), ext_phy_settings_swlvl(), and set_sdram_timings().

ioctrl_reg

struct ddr_cmdtctrl* ioctrl_reg = {(struct ddr_cmdtctrl *)DDR_CONTROL_BASE_ADDR}

static

Base address for ddr io control instances.

Definition at line 34 of file sdram.c.

Referenced by config_io_ctrl().

vtpreg

struct vtp_reg* vtpreg[2]

static

Initial value:

= {(struct vtp_reg *)VTP0_CTRL_ADDR,
                                    (struct vtp_reg *)VTP1_CTRL_ADDR}

Definition at line 13 of file sdram.c.

Referenced by config_vtp().