diff options
Diffstat (limited to 'src/soc/imgtec/pistachio/ddr2_init.c')
-rw-r--r-- | src/soc/imgtec/pistachio/ddr2_init.c | 443 |
1 files changed, 0 insertions, 443 deletions
diff --git a/src/soc/imgtec/pistachio/ddr2_init.c b/src/soc/imgtec/pistachio/ddr2_init.c deleted file mode 100644 index 39b553df24..0000000000 --- a/src/soc/imgtec/pistachio/ddr2_init.c +++ /dev/null @@ -1,443 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014 Imagination Technologies - * - * 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; version 2 of - * the License. - * - * 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. - */ - -#include <device/mmio.h> -#include <soc/ddr_init.h> -#include <soc/ddr_private_reg.h> -#include <stdint.h> - -#define BL8 0 - -/* - * Configuration for the Winbond W972GG6JB-25 part using - * Synopsys DDR uMCTL and DDR Phy - */ -int init_ddr2(void) -{ - - /* - * Reset the AXI bridge and DDR Controller in case any spurious - * writes have already happened to DDR - note must be done together, - * not sequentially - */ - write32_x(TOPLEVEL_REGS + DDR_CTRL_OFFSET, 0x00000000); - write32_x(TOPLEVEL_REGS + DDR_CTRL_OFFSET, 0x0000000F); - /* - * Dummy read to fence the access between the reset above - * and thw DDR controller writes below - */ - read32_x(TOPLEVEL_REGS + DDR_CTRL_OFFSET); - /* Timings for 400MHz - * therefore 200MHz (5ns) uMCTL (Internal) Rate - */ - /* TOGCNT1U: Toggle Counter 1U Register: 1us 200h C8h */ - write32_x(DDR_PCTL + DDR_PCTL_TOGCNT1U_OFFSET, 0x000000C8); - /* TINIT: t_init Timing Register: at least 200us 200h C8h */ - write32_x(DDR_PCTL + DDR_PCTL_TINIT_OFFSET, 0x000000C8); - /* TRSTH: Reset High Time Register DDR3 ONLY */ - write32_x(DDR_PCTL + DDR_PCTL_TRSTH_OFFSET, 0x00000000); - /* TOGCNT100N: Toggle Counter 100N Register: 20d, 14h*/ - write32_x(DDR_PCTL + DDR_PCTL_TOGG_CNTR_100NS_OFFSET, 0x00000014); - /* DTUAWDT DTU Address Width Register - * 1:0 column_addr_width Def 10 - 7 3 10 bits - * 4:3 bank_addr_width Def 3 - 2 1 3 bits (8 bank) - * 7:6 row_addr_width Def 14 - 13 1 3 bits - * 10:9 number_ranks Def 1 - 1 0 0 1 Rank - */ - write32_x(DDR_PCTL + DDR_PCTL_DTUAWDT_OFFSET, 0x0000004B); - /* MCFG - * 0 BL 0 = 4 1 = 8 - * 1 RDRIMM 0 - * 2 BL8 Burst Terminate 0 - * 3 2T = 0 - * 4 Multi Rank 0 - * 5 DDR3 En 0 - * 6 LPDDR S4 En - * 7 BST En 0, 1 for LPDDR2/3 - * 15:8 Power down Idle, passed by argument - * 16 Power Down Type, passed by argument - * 17 Power Down Exit 0 = slow, 1 = fast, pba - * 19:18 tFAW 45ns = 9 clk 5*2 -1 1h - * 21:20 mDDR/LPDDR2 BL 0 - * 23:22 mDDR/LPDDR2 Enable 0 - * 31:24 mDDR/LPDDR2/3 Dynamic Clock Stop 0 - */ - write32_x(DDR_PCTL + DDR_PCTL_MCFG_OFFSET, - 0x00060000 | (BL8 ? 0x1 : 0x0)); - /* MCFG1: Memory Configuration-1 Register - * c7:0 sr_idle Self Refresh Idle Entery 32 * nclks 14h, set 0 for BUB - * 10:8 Fine tune MCFG.19:18 -1 - * 15:11 Reserved - * 23:16 Hardware Idle Period NA 0 - * 30:24 Reserved - * 31 c_active_in_pin exit auto clk stop NA 0 - */ - write32_x(DDR_PCTL + DDR_PCTL_MCFG1_OFFSET, 0x00000100); - /* DCR DRAM Config - * 2:0 SDRAM => DDR2 2 - * 3 DDR 8 Bank 1 - * 6:4 Primary DQ DDR3 Only 0 - * 7 Multi-Purpose Register DDR3 Only 0 - * 9:8 DDRTYPE LPDDR2 00 - * 26:10 Reserved - * 27 NOSRA No Simultaneous Rank Access 0 - * 28 DDR 2T 0 - * 29 UDIMM NA 0 - * 30 RDIMM NA 0 - * 31 TPD LPDDR2 0 - */ - write32_x(DDR_PHY + DDRPHY_DCR_OFFSET, 0x0000000A); - /* Generate to use with PHY and PCTL - * MR0 : MR Register, bits 12:0 imported dfrom MR - * 2:0 BL 8 011 - * 3 BT Sequential 0 Interleaved 1 = 0 - * 6:4 CL 6 - * 7 TM Normal 0 - * 8 DLL Reset 1 (self Clearing) - * 11:9 WR 15 ns 6 (101) - * 12 PD Slow 1 Fast 0 0 - * 15:13 RSVD RSVD - * 31:16 Reserved - */ - write32_x(DDR_PHY + DDRPHY_MR_OFFSET, 0x00000B62 | (BL8 ? 0x1 : 0x0)); - /* MR1 : EMR Register - * Generate to use with PHY and PCTL - * 0 DE DLL Enable 0 Disable 1 - * 1 DIC Output Driver Imp Ctl 0 Full, 1 Half - * 6,2 ODT 0 Disable, 1 75R, 2 150R, 3 50R; LSB: 2, MSB: 6 - * 5:3 AL = 0 - * 9:7 OCD = 0 - * 10 DQS 0 diff, 1 single = 0 - * 11 RDQS NA 0 - * 12 QOFF Normal mode 0 - * 15:13 RSVD - * 31:16 Reserved - */ - write32_x(DDR_PHY + DDRPHY_EMR_OFFSET, 0x00000044); - /* MR2 : EMR2 Register - * Generate to use with PHY and PCTL - * 2:0 PASR, NA 000 - * 3 DDC NA 0 - * 6:4 RSVD - * 7 SFR 0 - * 15:8 RSVD - * 31:16 Reserved - */ - write32_x(DDR_PHY + DDRPHY_EMR2_OFFSET, 0x00000000); - /* DSGCR - * 0 PUREN Def 1 - * 1 BDISEN Def 1 - * 2 ZUEN Def 1 - * 3 LPIOPD DEf 1 0 - * 4 LPDLLPD DEf 1 0 - * 7:5 DQSGX DQS Extention set to 1 - advised by Synopsys - * 10:8 DQSGE DQS Early Gate - 1 - advised by Sysnopsys - * 11 NOBUB No Bubbles, adds latency 1 - * 12 FXDLAT Fixed Read Latency 0 - * 15:13 Reserved - * 19:16 CKEPDD CKE Power Down 0000 - * 23:20 ODTPDD ODT Power Down 0000 - * 24 NL2PD Power Down Non LPDDR2 pins 0 - * 25 NL2OE Output Enable Non LPDDR2 pins 1 - * 26 TPDPD LPDDR Only 0 - * 27 TPDOE LPDDR Only 0 - * 28 CKOE Output Enable Clk's 1 - * 29 ODTOE Output Enable ODT 1 - * 30 RSTOE RST# Output Enable 1 - * 31 CKEOE CKE Output Enable 1 - */ - write32_x(DDR_PHY + DDRPHY_DSGCR_OFFSET, 0xF2000927); - /* Sysnopsys advised 500R pullup/pulldown DQS DQSN */ - write32_x(DDR_PHY + DDRPHY_DXCCR_OFFSET, 0x00000C40); - /* DTPR0 : DRAM Timing Params 0 - * 1:0 tMRD 2 - * 4:2 tRTP 3 - * 7:5 tWTR 3 - * 11:8 tRP 6 - * 15:12 tRCD 6 - * 20:16 tRAS 18 - * 24:21 tRRD 4 - * 30:25 tRC 24 (23) - * 31 tCCD 0 BL/2 Cas to Cas - */ - write32_x(DDR_PHY + DDRPHY_DTPR0_OFFSET, 0x3092666E); - /* DTPR1 : DRAM Timing Params 1 - * 1:0 ODT On/Off Del Std 0 - * 2 tRTW Rd2Wr Del 0 std 1 +1 0 - * 8:3 tFAW 4 Bank Act 45ns = 18 18 - * 10:9 tMOD DDR3 Only 0 - * 11 tRTODT DDR3 Only 0 - * 15:12 Reserved - * 23:16 tRFC 195ns 78 def 131 78d - * 26:24 tDQSCK LPDDR2 only 1 - * 29:27 tDQSCKmax 1 - * 31:30 Reserved - */ - write32_x(DDR_PHY + DDRPHY_DTPR1_OFFSET, 0x094E0092); - /* DTPR2 : DRAM Timing Params 2 - * 9:0 tXS exit SR def 200, 200d - * 14:10 tXP PD Exit Del 8 3 - * 18:15 tCKE CKE Min pulse 3 - * 28:19 tDLLK DLL Lock time 200d - * 32:29 Reserved - */ - write32_x(DDR_PHY + DDRPHY_DTPR2_OFFSET, 0x06418CC8); - /* PTR0 : PHY Timing Params 0 - * 5:0 tDLLRST Def 27 - * 17:6 tDLLLOCK Def 2750 - * 21:18 tITMSRST Def 8 - * 31:22 Reserved 0 - */ - write32_x(DDR_PHY + DDRPHY_PTR0_OFFSET, 0x0022AF9B); - /* PTR1 : PHY Timing Params 1 - * 18:0 : tDINITO DRAM Init time 200us 80,000 Dec 0x13880 - * 29:19 : tDINIT1 DRAM Init time 400ns 160 Dec 0xA0 - */ - write32_x(DDR_PHY + DDRPHY_PTR1_OFFSET, 0x05013880); - /* DQS gating configuration: passive windowing mode */ - /* - * PGCR: PHY General cofiguration register - * 0 ITM DDR mode: 0 - * 1 DQS gading configuration: passive windowing 1 - * 2 DQS drift compensation: not supported in passive windowing 0 - * 4:3 DQS drift limit 0 - * 8:5 Digital test output select 0 - * 11:9 CK Enable: one bit for each 3 CK pair: 0x7 - * 13:12 CK Disable values: 0x2 - * 14 CK Invert 0 - * 15 IO loopback 0 - * 17:16 I/O DDR mode 0 - * 21:18 Ranks enable by training: 0xF - * 23:22 Impedance clock divider select 0x2 - * 24 Power down disable 1 - * 28:25 Refresh during training 0 - * 29 loopback DQS shift 0 - * 30 loopback DQS gating 0 - * 31 loopback mode 0 - */ - write32_x(DDR_PHY + DDRPHY_PGCR_OFFSET, 0x01BC2E02); - /* PGSR : Wait for INIT/DLL/Z Done from Power on Reset */ - if (wait_for_completion(DDR_PHY + DDRPHY_PGSR_OFFSET, 0x00000007)) - return DDR_TIMEOUT; - /* PIR : use PHY for DRAM Init */ - write32_x(DDR_PHY + DDRPHY_PIR_OFFSET, 0x000001DF); - /* PGSR : Wait for DRAM Init Done */ - if (wait_for_completion(DDR_PHY + DDRPHY_PGSR_OFFSET, 0x0000001F)) - return DDR_TIMEOUT; - /* Disable Impedance Calibration */ - write32_x(DDR_PHY + DDRPHY_ZQ0CR0_OFFSET, 0x3000014A); - write32_x(DDR_PHY + DDRPHY_ZQ1CR0_OFFSET, 0x3000014A); - - /* DF1STAT0 : wait for DFI_INIT_COMPLETE */ - if (wait_for_completion(DDR_PCTL + DDR_PCTL_DFISTAT0_OFFSET, - 0x00000001)) - return DDR_TIMEOUT; - /* POWCTL : Start the memory Power Up seq*/ - write32_x(DDR_PCTL + DDR_PCTL_POWCTL_OFFSET, 0x00000001); - /* POWSTAT : wait for POWER_UP_DONE */ - if (wait_for_completion(DDR_PCTL + DDR_PCTL_POWSTAT_OFFSET, - 0x00000001)) - return DDR_TIMEOUT; - /* - * TREFI : t_refi Timing Register 1X - * 12:0 t_refi 7.8us in 100ns 0x4E - * 15:13 Reserved 0 - * 18:16 num_add_ref 0 - * 30:19 Reserved 0 - * 31 Update 1 - */ - write32_x(DDR_PCTL + DDR_PCTL_TREFI_OFFSET, 0x8000004E); - /* TMRD : t_mrd Timing Register -- Range 2 to 3 */ - write32_x(DDR_PCTL + DDR_PCTL_TMRD_OFFSET, 0x00000002); - /* - * TRFC : t_rfc Timing Register -- Range 15 to 131 - * 195ns / 2.5ns 78 x4E - */ - write32_x(DDR_PCTL + DDR_PCTL_TRFC_OFFSET, 0x0000004E); - /* TRP : t_rp Timing Register -- Range 3 to 7 - * 4:0 tRP 12.5 / 2.5 = 5 6 For Now 6-6-6 - * 17:16 rpea_extra tRPall 8 bank 1 - */ - write32_x(DDR_PCTL + DDR_PCTL_TRP_OFFSET, 0x00010006); - /* TAL : Additive Latency Register -- AL in MR1 */ - write32_x(DDR_PCTL + DDR_PCTL_TAL_OFFSET, 0x00000000); - /* DFITPHYWRLAT : Write cmd to dfi_wrdata_en */ - write32_x(DDR_PCTL + DDR_PCTL_DFIWRLAT_OFFSET, 0x00000002); - /* DFITRDDATAEN : Read cmd to dfi_rddata_en */ - write32_x(DDR_PCTL + DDR_PCTL_DFITRDDATAEN_OFFSET, 0x00000002); - /* TCL : CAS Latency Timing Register -- CASL in MR0 6-6-6 */ - write32_x(DDR_PCTL + DDR_PCTL_TCL_OFFSET, 0x00000006); - /* TCWL : CAS Write Latency Register --CASL-1 */ - write32_x(DDR_PCTL + DDR_PCTL_TCWL_OFFSET, 0x00000005); - /* - * TRAS : Activate to Precharge cmd time - * Range 8 to 24: 45ns / 2.5ns = 18d - */ - write32_x(DDR_PCTL + DDR_PCTL_TRAS_OFFSET, 0x00000012); - /* - * TRC : Min. ROW cycle time - * Range 11 to 31: 57.5ns / 2.5ns = 23d Playing safe 24 - */ - write32_x(DDR_PCTL + DDR_PCTL_TRC_OFFSET, 0x00000018); - /* - * TRCD : Row to Column Delay - * Range 3 to 7 (TCL = TRCD): 2.5ns / 2.5ns = 5 but running 6-6-6 6 - */ - write32_x(DDR_PCTL + DDR_PCTL_TRCD_OFFSET, 0x00000006); - /* TRRD : Row to Row delay -- Range 2 to 6: 2K Page 10ns / 2.5ns = 4*/ - write32_x(DDR_PCTL + DDR_PCTL_TRRD_OFFSET, 0x00000004); - /* TRTP : Read to Precharge time -- Range 2 to 4: 7.3ns / 2.5ns = 3 */ - write32_x(DDR_PCTL + DDR_PCTL_TRTP_OFFSET, 0x00000003); - /* TWR : Write recovery time -- WR in MR0: 15ns / 2.5ns = 6 - */ - write32_x(DDR_PCTL + DDR_PCTL_TWR_OFFSET, 0x00000006); - /* - * TWTR : Write to read turn around time - * Range 2 to 4: 7.3ns / 2.5ns = 3 - */ - write32_x(DDR_PCTL + DDR_PCTL_TWTR_OFFSET, 0x00000003); - /* TEXSR : Exit Self Refresh to first valid cmd: tXS 200*/ - write32_x(DDR_PCTL + DDR_PCTL_TEXSR_OFFSET, 0x000000C8); - /* - * TXP : Exit Power Down to first valid cmd - * tXP 2, Settingto 3 to match PHY - */ - write32_x(DDR_PCTL + DDR_PCTL_TXP_OFFSET, 0x00000003); - /* - * TDQS : t_dqs Timing Register - * DQS additional turn around Rank 2 Rank (1 Rank) Def 1 - */ - write32_x(DDR_PCTL + DDR_PCTL_TDQS_OFFSET, 0x00000001); - /*TRTW : Read to Write turn around time Def 3 - * Actual gap t_bl + t_rtw - */ - write32_x(DDR_PCTL + DDR_PCTL_TRTW_OFFSET, 0x00000003); - /* TCKE : CKE min pulse width DEf 3 */ - write32_x(DDR_PCTL + DDR_PCTL_TCKE_OFFSET, 0x00000003); - /* - * TXPDLL : Slow Exit Power Down to first valid cmd delay - * tXARDS 10+AL = 10 - */ - write32_x(DDR_PCTL + DDR_PCTL_TXPDLL_OFFSET, 0x0000000A); - /* - * TCKESR : Min CKE Low width for Self refresh entry to exit - * t_ckesr = 0 DDR2 - */ - write32_x(DDR_PCTL + DDR_PCTL_TCKESR_OFFSET, 0x00000000); - /* SCFG : State Configuration Register (Enabling Self Refresh) - * 0 LP_en Leave Off for Bring Up 0 - * 5:1 Reserved - * 6 Synopsys Internal Only 0 - * 7 Enale PHY indication of LP Opportunity 1 - * 11:8 bbflags_timing max UPCTL_TCU_SED_P - tRP (16 - 6) Use 4 - * 16:12 Additional delay on accertion of ac_pdd 4 - * 31:17 Reserved - */ - write32_x(DDR_PCTL + DDR_PCTL_SCFG_OFFSET, 0x00004480); - /* - * DFITPHYWRDATA : dfi_wrdata_en to drive wr data - * DFI Clks wrdata_en to wrdata Def 1 - */ - write32_x(DDR_PCTL + DDR_PCTL_DFITPHYWRDATA_OFFSET, 0x00000000); - /* - * DFITPHYRDLAT : dfi_rddata_en to dfi_rddata_valid - * DFI clks max rddata_en to rddata_valid Def 15 - */ - write32_x(DDR_PCTL + DDR_PCTL_DFITPHYRDLAT_OFFSET, 0x00000008); - /* MCMD : PREA, Addr 0 Bank 0 Rank 0 Del 0 - * 3:0 cmd_opcode PREA 00001 - * 16:4 cmd_addr 0 - * 19:17 bank_addr 0 - * 23:20 rank_sel 0 0001 - * 27:24 cmddelay 0 - * 30:24 Reserved - */ - write32_x(DDR_PCTL + DDR_PCTL_MCMD_OFFSET, 0x80100001); - /* MRS cmd wait for completion */ - if (wait_for_completion(DDR_PCTL + DDR_PCTL_MCMD_OFFSET, 0x00100001)) - return DDR_TIMEOUT; - /* SCTL : UPCTL switch INIT CONFIG State */ - write32_x(DDR_PCTL + DDR_PCTL_SCTL_OFFSET, 0x00000001); - /* STAT : Wait for Switch INIT to Config State */ - if (wait_for_completion(DDR_PCTL + DDR_PCTL_STAT_OFFSET, 0x00000001)) - return DDR_TIMEOUT; - /* DFISTCFG0 : Drive various DFI signals appropriately - * 0 dfi_init_start 0 - * 1 dfi_freq_ratio_en 1 - * 2 dfi_data_byte_disable_en 1 - */ - write32_x(DDR_PCTL + DDR_PCTL_DFISTCFG0_OFFSET, 0x00000003); - /* DFISTCFG1 : Enable various DFI support - * 0 dfi_dram_clk_disable_en 1 - * 1 dfi_dram_clk_disable_en_pdp only lPDDR 0 - */ - write32_x(DDR_PCTL + DDR_PCTL_DFISTCFG1_OFFSET, 0x00000001); - /* DFISTCFG2 : Enable Parity and asoc interrupt - * 0 dfi_parity_in Enable 1 - * 1 Interrupt on dfi_parity_error 1 - */ - write32_x(DDR_PCTL + DDR_PCTL_DFISTCFG2_OFFSET, 0x00000003); - /* DFILPCFG0 : DFI Low Power Interface Configuration - * 0 Enable DFI LP IF during PD 1 - * 3:1 Reserved - * 7:4 DFI tlp_wakeup time 0 - * 8 Enable DFI LP IF during SR 1 - * 11:9 Reserved - * 15:12 dfi_lp_wakeup in SR 0 - * 19:16 tlp_resp DFI 2.1 recomend 7 - * 23:20 Reserved - * 24 Enable DFI LP in Deep Power Down 0 - * 27:25 Reserved - * 31:28 DFI LP Deep Power Down Value 0 - */ - write32_x(DDR_PCTL + DDR_PCTL_DFILPCFG0_OFFSET, 0x00070101); - /* DFIODTCFG : DFI ODT Configuration - * Only Enabled on Rank0 Writes - * 0 rank0_odt_read_nsel 0 - * 1 rank0_odt_read_sel 0 - * 2 rank0_odt_write_nsel 0 - * 3 rank0_odt_write_sel 1 - */ - write32_x(DDR_PCTL + DDR_PCTL_DFIODTCFG_OFFSET, 0x00000008); - /* DFIODTCFG1 : DFI ODT Configuration - * 4:0 odt_lat_w 4 - * 12:8 odt_lat_r 0 Def - * 4:0 odt_len_bl8_w 6 Def - * 12:8 odt_len_bl8_r 6 Def - */ - write32_x(DDR_PCTL + DDR_PCTL_DFIODTCFG1_OFFSET, 0x06060004); - /* DCFG : DRAM Density 256 Mb 16 Bit IO Width - * 1:0 Devicw Width 1 x8, 2 x16, 3 x32 2 - * 5:2 Density 2Gb = 5 - * 6 Dram Type (MDDR/LPDDR2) Only 0 - * 7 Reserved 0 - * 10:8 Address Map R/B/C = 1 - * 31:11 Reserved - */ - write32_x(DDR_PCTL + DDR_PCTL_DCFG_OFFSET, 0x00000116); - /* PCFG_0 : Port 0 AXI config */ - if (BL8) - write32_x(DDR_PCTL + DDR_PCTL_PCFG0_OFFSET, 0x000800A0); - else - write32_x(DDR_PCTL + DDR_PCTL_PCFG0_OFFSET, 0x000400A0); - /* SCTL : UPCTL switch Config to ACCESS State */ - write32_x(DDR_PCTL + DDR_PCTL_SCTL_OFFSET, 0x00000002); - /* STAT : Wait for switch CFG -> GO State */ - if (wait_for_completion(DDR_PCTL + DDR_PCTL_STAT_OFFSET, 0x3)) - return DDR_TIMEOUT; - - return 0; -} |