/* * ddr_defs.h * * ddr specific header * * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ * * 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. */ #ifndef _DDR_DEFS_H #define _DDR_DEFS_H #include /* AM335X EMIF Register values */ #define EMIF_SDMGT 0x80000000 #define EMIF_SDRAM 0x00004650 #define EMIF_PHYCFG 0x2 #define DDR_PHY_RESET (0x1 << 10) #define DDR_FUNCTIONAL_MODE_EN 0x1 #define DDR_PHY_READY (0x1 << 2) #define VTP_CTRL_READY (0x1 << 5) #define VTP_CTRL_ENABLE (0x1 << 6) #define VTP_CTRL_LOCK_EN (0x1 << 4) #define VTP_CTRL_START_EN (0x1) #define DDR2_RATIO 0x80 #define CMD_FORCE 0x00 #define CMD_DELAY 0x00 #define EMIF_READ_LATENCY 0x04 #define EMIF_TIM1 0x0666B3D6 #define EMIF_TIM2 0x143731DA #define EMIF_TIM3 0x00000347 #define EMIF_SDCFG 0x43805332 #define EMIF_SDREF 0x0000081a #define DDR2_DLL_LOCK_DIFF 0x0 #define DDR2_RD_DQS 0x12 #define DDR2_PHY_FIFO_WE 0x80 #define DDR2_INVERT_CLKOUT 0x00 #define DDR2_WR_DQS 0x00 #define DDR2_PHY_WRLVL 0x00 #define DDR2_PHY_GATELVL 0x00 #define DDR2_PHY_WR_DATA 0x40 #define PHY_RANK0_DELAY 0x01 #define PHY_DLL_LOCK_DIFF 0x0 #define DDR_IOCTRL_VALUE 0x18B /** * This structure represents the EMIF registers on AM33XX devices. */ struct emif_regs { unsigned int sdrrev; /* offset 0x00 */ unsigned int sdrstat; /* offset 0x04 */ unsigned int sdrcr; /* offset 0x08 */ unsigned int sdrcr2; /* offset 0x0C */ unsigned int sdrrcr; /* offset 0x10 */ unsigned int sdrrcsr; /* offset 0x14 */ unsigned int sdrtim1; /* offset 0x18 */ unsigned int sdrtim1sr; /* offset 0x1C */ unsigned int sdrtim2; /* offset 0x20 */ unsigned int sdrtim2sr; /* offset 0x24 */ unsigned int sdrtim3; /* offset 0x28 */ unsigned int sdrtim3sr; /* offset 0x2C */ unsigned int res1[2]; unsigned int sdrmcr; /* offset 0x38 */ unsigned int sdrmcsr; /* offset 0x3C */ unsigned int res2[8]; unsigned int sdritr; /* offset 0x60 */ unsigned int res3[32]; unsigned int ddrphycr; /* offset 0xE4 */ unsigned int ddrphycsr; /* offset 0xE8 */ unsigned int ddrphycr2; /* offset 0xEC */ }; /** * Encapsulates DDR PHY control and corresponding shadow registers. */ struct ddr_phy_control { unsigned long reg; unsigned long reg_sh; unsigned long reg2; }; /** * Encapsulates SDRAM timing and corresponding shadow registers. */ struct sdram_timing { unsigned long time1; unsigned long time1_sh; unsigned long time2; unsigned long time2_sh; unsigned long time3; unsigned long time3_sh; }; /** * Encapsulates SDRAM configuration. * (Includes refresh control registers) */ struct sdram_config { unsigned long sdrcr; unsigned long sdrcr2; unsigned long refresh; unsigned long refresh_sh; }; /** * Configure SDRAM */ int config_sdram(struct sdram_config *cfg); /** * Set SDRAM timings */ int set_sdram_timings(struct sdram_timing *val); /** * Configure DDR PHY */ int config_ddr_phy(struct ddr_phy_control *cfg); /** * This structure represents the DDR registers on AM33XX devices. */ struct ddr_regs { unsigned int resv0[7]; unsigned int cm0csratio; /* offset 0x01C */ unsigned int cm0csforce; /* offset 0x020 */ unsigned int cm0csdelay; /* offset 0x024 */ unsigned int cm0dldiff; /* offset 0x028 */ unsigned int cm0iclkout; /* offset 0x02C */ unsigned int resv1[8]; unsigned int cm1csratio; /* offset 0x050 */ unsigned int cm1csforce; /* offset 0x054 */ unsigned int cm1csdelay; /* offset 0x058 */ unsigned int cm1dldiff; /* offset 0x05C */ unsigned int cm1iclkout; /* offset 0x060 */ unsigned int resv2[8]; unsigned int cm2csratio; /* offset 0x084 */ unsigned int cm2csforce; /* offset 0x088 */ unsigned int cm2csdelay; /* offset 0x08C */ unsigned int cm2dldiff; /* offset 0x090 */ unsigned int cm2iclkout; /* offset 0x094 */ unsigned int resv3[12]; unsigned int dt0rdsratio0; /* offset 0x0C8 */ unsigned int dt0rdsratio1; /* offset 0x0CC */ unsigned int resv4[3]; unsigned int dt0wdsratio0; /* offset 0x0DC */ unsigned int dt0wdsratio1; /* offset 0x0E0 */ unsigned int resv5[3]; unsigned int dt0wiratio0; /* offset 0x0F0 */ unsigned int dt0wiratio1; /* offset 0x0F4 */ unsigned int dt0giratio0; /* offset 0x0FC */ unsigned int dt0giratio1; /* offset 0x100 */ unsigned int resv6[1]; unsigned int dt0fwsratio0; /* offset 0x108 */ unsigned int dt0fwsratio1; /* offset 0x10C */ unsigned int resv7[4]; unsigned int dt0wrsratio0; /* offset 0x120 */ unsigned int dt0wrsratio1; /* offset 0x124 */ unsigned int resv8[3]; unsigned int dt0rdelays0; /* offset 0x134 */ unsigned int dt0dldiff0; /* offset 0x138 */ unsigned int resv9[39]; unsigned int dt1rdelays0; /* offset 0x1D8 */ }; /** * Encapsulates DDR CMD control registers. */ struct cmd_control { unsigned long cmd0csratio; unsigned long cmd0csforce; unsigned long cmd0csdelay; unsigned long cmd0dldiff; unsigned long cmd0iclkout; unsigned long cmd1csratio; unsigned long cmd1csforce; unsigned long cmd1csdelay; unsigned long cmd1dldiff; unsigned long cmd1iclkout; unsigned long cmd2csratio; unsigned long cmd2csforce; unsigned long cmd2csdelay; unsigned long cmd2dldiff; unsigned long cmd2iclkout; }; /** * Encapsulates DDR DATA registers. */ struct ddr_data { unsigned long datardsratio0; unsigned long datardsratio1; unsigned long datawdsratio0; unsigned long datawdsratio1; unsigned long datawiratio0; unsigned long datawiratio1; unsigned long datagiratio0; unsigned long datagiratio1; unsigned long datafwsratio0; unsigned long datafwsratio1; unsigned long datawrsratio0; unsigned long datawrsratio1; unsigned long datadldiff0; }; /** * Configure DDR CMD control registers */ int config_cmd_ctrl(struct cmd_control *cmd); /** * Configure DDR DATA registers */ int config_ddr_data(int data_macrono, struct ddr_data *data); /** * This structure represents the DDR io control on AM33XX devices. */ struct ddr_cmdtctrl { unsigned int resv1[1]; unsigned int cm0ioctl; unsigned int cm1ioctl; unsigned int cm2ioctl; unsigned int resv2[12]; unsigned int dt0ioctl; unsigned int dt1ioctl; }; /** * Encapsulates DDR CMD & DATA io control registers. */ struct ddr_ioctrl { unsigned long cmd1ctl; unsigned long cmd2ctl; unsigned long cmd3ctl; unsigned long data1ctl; unsigned long data2ctl; }; /** * Configure DDR io control registers */ int config_io_ctrl(struct ddr_ioctrl *ioctrl); struct ddr_ctrl { unsigned int ddrioctrl; unsigned int resv1[325]; unsigned int ddrckectrl; }; void config_ddr(void); #endif /* _DDR_DEFS_H */