[U-Boot] [PATCH v3 2/2] mpc85xx: support for Freescale COM Express P2020

[York Sun <yorksun@freescale.com>]

Looking good so far, what's the question? You can always override the
register values and try it since you got the interactive debug up.

York



On Fri, 2011-11-11 at 14:54 -0800, McClintock Matthew-B29882 wrote:
> Adding York who might be able to help more...
> 
> -M
> 
> On Fri, Nov 11, 2011 at 4:18 PM, Ira W. Snyder <iws@ovro.caltech.edu> wrote:
> > On Fri, Nov 11, 2011 at 09:07:23PM +0000, McClintock Matthew-B29882 wrote:
> >> On Fri, Nov 11, 2011 at 3:03 PM, Ira W. Snyder <iws@ovro.caltech.edu> wrote:
> >> > Thanks. That config_sram.dat is exactly what I came up with.
> >> >
> >> > I have my board booting via L2SRAM, but the DDR doesn't get configured
> >> > correctly yet. I'm trying to figure out how the DDR SPD stuff works in
> >> > U-Boot. I've never used it before. I'm following the P2020DS code as an
> >> > example, but I haven't yet figured out how the code in
> >> > board/freescale/p2020ds/ddr.c was derived (the board_specific_parameters
> >> > structure especially).
> >>
> >> If you board has i2c to the ddr modules it should be able to use the
> >> timing info from there. I think CONFIG_DDR_SPD is the config option
> >> you are looking for. I know the P2020DS does SPD from L2SRAM.
> >>
> >
> > The only thing that looks like an SPD chip is at i2c bus 1, address
> > 0x53. I setup my board configuration with:
> >
> > #define CONFIG_FSL_DDR3
> > #define CONFIG_FSL_DDR_INTERACTIVE
> > #define CONFIG_CHIP_SELECTS_PER_CTRL    2
> > #define CONFIG_SYS_DDR_SBE              0x00010000
> >
> > #define CONFIG_DDR_SPD
> > #define CONFIG_SYS_SPD_BUS_NUM          1
> > #define SPD_EEPROM_ADDRESS              0x53
> >
> > Some of the settings the SPD code computes are correct, and some are
> > completely wrong. I can't figure out how to make this work.
> >
> > Here is the raw SPD dumped from a working U-Boot:
> >
> > 0000: 92 10 0b 08 02 11 00 09 0b 52 01 08 0c 00 3e 00    .........R....>.
> > 0010: 69 78 69 30 69 11 20 89 70 03 3c 3c 00 f0 83 05    ixi0i. .p.<<....
> > 0020: 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> > 0030: 00 00 00 00 00 00 00 00 00 00 00 00 0f 11 1f 00    ................
> > 0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> > 0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> > 0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> > 0070: 00 00 00 00 00 01 94 01 10 25 03 ae 48 48 e3 e3    .........%..HH..
> > 0080: 53 47 35 37 32 35 36 38 45 4d 52 30 36 39 53 32    SG572568EMR069S2
> > 0090: 53 46 00 00 80 ce 53 4d 41 52 54 4d 6f 64 75 6c    SF....SMARTModul
> > 00a0: 61 72 54 65 63 68 6e 6f 6c 6f 67 69 65 73 00 00    arTechnologies..
> > 00b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> > 00c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> > 00d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> > 00e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> > 00f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
> >
> > And here is the output of an interactive FSL DDR run:
> >
> > U-Boot 2011.09-00929-g3b5f71c-dirty (Nov 11 2011 - 13:31:13)
> >
> > CPU0:  P2020E, Version: 2.0, (0x80ea0020)
> > Core:  E500, Version: 5.0, (0x80211050)
> > Clock Configuration:
> >       CPU0:1200 MHz, CPU1:1200 MHz,
> >       CCB:600  MHz,
> >       DDR:333.333 MHz (666.667 MT/s data rate) (Asynchronous), LBC:37.500 MHz
> > L1:    D-cache 32 kB enabled
> >       I-cache 32 kB enabled
> > Board: Freescale COM Express P2020
> > I2C:   ready
> > SPI:   ready
> > DRAM:  FSL DDR>
> > FSL DDR>
> > FSL DDR>compute
> > unknown module_type 0x08
> > Detected UDIMM SG572568EMR069S2SF
> > The choosen cas latency 16 is too large
> > FSL DDR>print c0 d0
> > SPD info:  Controller=0 DIMM=0
> > 0      : 92 info_size_crc  bytes written into serial memory, CRC coverage
> > 1      : 10 spd_rev        SPD Revision
> > 2      : 0b mem_type       Key Byte / DRAM Device Type
> > 3      : 08 module_type    Key Byte / Module Type
> > 4      : 02 density_banks  SDRAM Density and Banks
> > 5      : 11 addressing     SDRAM Addressing
> > 6      : 00 module_vdd     Module Nominal Voltage, VDD
> > 7      : 09 organization   Module Organization
> > 8      : 0b bus_width      Module Memory Bus Width
> > 9      : 52 ftb_div        Fine Timebase (FTB) Dividend / Divisor
> > 10     : 01 mtb_dividend   Medium Timebase (MTB) Dividend
> > 11     : 08 mtb_divisor    Medium Timebase (MTB) Divisor
> > 12     : 0c tCK_min        SDRAM Minimum Cycle Time
> > 13     : 00 res_13         Reserved
> > 14     : 3e caslat_lsb     CAS Latencies Supported, LSB
> > 15     : 00 caslat_msb     CAS Latencies Supported, MSB
> > 16     : 69 tAA_min        Min CAS Latency Time
> > 17     : 78 tWR_min        Min Write REcovery Time
> > 18     : 69 tRCD_min       Min RAS# to CAS# Delay Time
> > 19     : 30 tRRD_min       Min Row Active to Row Active Delay Time
> > 20     : 69 tRP_min        Min Row Precharge Delay Time
> > 21     : 11 tRAS_tRC_ext   Upper Nibbles for tRAS and tRC
> > 22     : 20 tRAS_min_lsb   Min Active to Precharge Delay Time, LSB
> > 23     : 89 tRC_min_lsb    Min Active to Active/Refresh Delay Time, LSB
> > 24     : 70 tRFC_min_lsb   Min Refresh Recovery Delay Time LSB
> > 25     : 03 tRFC_min_msb   Min Refresh Recovery Delay Time MSB
> > 26     : 3c tWTR_min       Min Internal Write to Read Command Delay Time
> > 27     : 3c tRTP_min Min Internal Read to Precharge Command Delay Time
> > 28     : 00 tFAW_msb       Upper Nibble for tFAW
> > 29     : f0 tFAW_min       Min Four Activate Window Delay Time
> > 30     : 83 opt_features   SDRAM Optional Features
> > 31     : 05 therm_ref_opt  SDRAM Thermal and Refresh Opts
> > 32     : 80 therm_sensor  SDRAM Thermal Sensor
> > 33     : 00 device_type  SDRAM Device Type
> > 34 - 59: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> > 60 -116: 0f111f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000117    : 01 Module MfgID Code LSB - JEP-106
> > 118    : 94 Module MfgID Code MSB - JEP-106
> > 119    : 01 Mfg Location
> > 120-121: 10 25 Mfg Date
> > 122-125: 03 ae 48 48    Module Serial Number
> > 126-127: e3 e3   SPD CRC
> > 128-145: 53 47 35 37 32 35 36 38 45 4d 52 30 36 39 53 32 53 46    Mfg's Module Part Number
> > 146-147: 00 00 Module Revision code
> > 148    : 80 DRAM MfgID Code LSB - JEP-106
> > 149    : ce DRAM MfgID Code MSB - JEP-106
> > 150-175: 53 4d 41 52 54 4d 6f 64 75 6c 61 72 54 65 63 68 6e 6f 6c 6f 67 69 65 73 00 00    Mfg's Specific Data
> > 176-255: 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000   Mfg's Specific Data
> >
> >
> >
> > DIMM parameters:  Controller=0 DIMM=0
> > DIMM organization parameters:
> > module part name = SG572568EMR069S2SF
> > rank_density = 1073741824 bytes (1024 megabytes)
> > capacity = 2147483648 bytes (2048 megabytes)
> > burst_lengths_bitmask = 00
> > base_addresss = 0 (00000000 00000000)
> > n_ranks = 2
> > data_width = 72
> > primary_sdram_width = 64
> > ec_sdram_width = 8
> > registered_dimm = 0
> > n_row_addr = 0
> > n_col_addr = 0
> > edc_config = 0
> > n_banks_per_sdram_device = 0
> > tCKmin_X_ps = 0
> > tCKmin_X_minus_1_ps = 0
> > tCKmin_X_minus_2_ps = 0
> > tCKmax_ps = 0
> > caslat_X = 0
> > tAA_ps = 0
> > caslat_X_minus_1 = 0
> > caslat_X_minus_2 = 0
> > caslat_lowest_derated = 0
> > tRCD_ps = 0
> > tRP_ps = 0
> > tRAS_ps = 0
> > tWR_ps = 0
> > tWTR_ps = 0
> > tRFC_ps = 0
> > tRRD_ps = 0
> > tRC_ps = 0
> > refresh_rate_ps = 0
> > tIS_ps = 0
> > tIH_ps = 0
> > tDS_ps = 0
> > tDH_ps = 0
> > tRTP_ps = 0
> > tDQSQ_max_ps = 0
> > tQHS_ps = 0
> >
> >
> >
> > "lowest common" DIMM parameters:  Controller=0
> > tCKmin_X_ps = 0 (4294967295 MHz)
> > tCKmax_ps = 0 (4294967295 MHz)
> > all_DIMMs_burst_lengths_bitmask = 00
> > tCKmax_max_ps = 0
> > tRCD_ps = 0
> > tRP_ps = 0
> > tRAS_ps = 0
> > tWR_ps = 0
> > tWTR_ps = 0
> > tRFC_ps = 0
> > tRRD_ps = 0
> > tRC_ps = 0
> > refresh_rate_ps = 0
> > tIS_ps = 0
> > tDS_ps = 0
> > tDH_ps = 0
> > tRTP_ps = 0
> > tDQSQ_max_ps = 0
> > tQHS_ps = 0
> > lowest_common_SPD_caslat = 0
> > highest_common_derated_caslat = 0
> > additive_latency = 0
> > ndimms_present = 1
> > all_DIMMs_registered = 0
> > all_DIMMs_unbuffered = 1
> > all_DIMMs_ECC_capable = 0
> > total_mem = 2147483648 (2048 megabytes)
> > base_address = 0 (0 megabytes)
> >
> >
> > User Config Options: Controller=0
> > cs0_odt_rd_cfg = 0
> > cs0_odt_wr_cfg = 1
> > cs1_odt_rd_cfg = 0
> > cs1_odt_wr_cfg = 1
> > cs0_odt_rtt_norm = 3
> > cs0_odt_rtt_wr = 0
> > cs1_odt_rtt_norm = 0
> > cs1_odt_rtt_wr = 0
> > memctl_interleaving = 0
> > memctl_interleaving_mode = 0
> > ba_intlv_ctl = 0x00000040
> > ECC_mode = 0
> > ECC_init_using_memctl = 1
> > DQS_config = 1
> > self_refresh_in_sleep = 1
> > dynamic_power = 0
> > data_bus_width = 0
> > burst_length = 6
> > cas_latency_override = 0
> > cas_latency_override_value = 3
> > use_derated_caslat = 0
> > additive_latency_override = 0
> > additive_latency_override_value = 3
> > clk_adjust = 6
> > cpo_override = 31
> > write_data_delay = 4
> > half_strength_driver_enable = 0
> > twoT_en = 0
> > threeT_en = 0
> > registered_dimm_en = 0
> > ap_en = 1
> > bstopre = 256
> > wrlvl_override = 1
> > wrlvl_sample = 10
> > wrlvl_start = 8
> > rcw_override = 0
> > rcw_1 = 0
> > rcw_2 = 0
> > tCKE_clock_pulse_width_ps = 9000
> > tFAW_window_four_activates_ps = 0
> > trwt_override = 0
> > trwt = 0
> >
> >
> > Address Assignment: Controller=0 DIMM=0
> > Don't have this functionality yet
> >
> >
> > Computed Register Values: Controller=0
> > cs0_bnds = 0x0000007F
> > cs0_config = 0x80014400
> > cs0_config_2 = 0x00000000
> > cs1_bnds = 0x00000000
> > cs1_config = 0x80014400
> > cs1_config_2 = 0x00000000
> > timing_cfg_3 = 0x000F0000
> > timing_cfg_0 = 0x40110104
> > timing_cfg_1 = 0x000F8246
> > timing_cfg_2 = 0x0FA8D0C0
> > ddr_sdram_cfg = 0xC7004000
> > ddr_sdram_cfg_2 = 0x24401040
> > ddr_sdram_mode = 0x00401021
> > ddr_sdram_mode_2 = 0x00000000
> > ddr_sdram_mode_3 = 0x00000000
> > ddr_sdram_mode_4 = 0x00000000
> > ddr_sdram_mode_5 = 0x00000000
> > ddr_sdram_mode_6 = 0x00000000
> > ddr_sdram_mode_7 = 0x00000000
> > ddr_sdram_mode_8 = 0x00000000
> > ddr_sdram_interval = 0x00000100
> > ddr_data_init = 0xDEADBEEF
> > ddr_sdram_clk_cntl = 0x03000000
> > ddr_init_addr = 0x00000000
> > ddr_init_ext_addr = 0x00000000
> > timing_cfg_4 = 0x00220001
> > timing_cfg_5 = 0x1C401400
> > ddr_zq_cntl = 0x89080600
> > ddr_wrlvl_cntl = 0x8675A608
> > ddr_sr_cntr = 0x00000000
> > ddr_sdram_rcw_1 = 0x00000000
> > ddr_sdram_rcw_2 = 0x00000000
> > ddr_cdr1 = 0x00000000
> > ddr_cdr2 = 0x00000000
> > err_disable = 0x00000000
> > err_int_en = 0x00000000
> > debug_01 = 0x00000000
> > debug_02 = 0x00000000
> > debug_03 = 0x00000000
> > debug_04 = 0x00000000
> > debug_05 = 0x00000000
> > debug_06 = 0x00000000
> > debug_07 = 0x00000000
> > debug_08 = 0x00000000
> > debug_09 = 0x00000000
> > debug_10 = 0x00000000
> > debug_11 = 0x00000000
> > debug_12 = 0x00000000
> > debug_13 = 0x00000000
> > debug_14 = 0x00000000
> > debug_15 = 0x00000000
> > debug_16 = 0x00000000
> > debug_17 = 0x00000000
> > debug_18 = 0x00000000
> > debug_19 = 0x00000000
> > debug_20 = 0x00000000
> > debug_21 = 0x00000000
> > debug_22 = 0x00000000
> > debug_23 = 0x00000000
> > debug_24 = 0x00000000
> > debug_25 = 0x00000000
> > debug_26 = 0x00000000
> > debug_27 = 0x00000000
> > debug_28 = 0x00000000
> > debug_29 = 0x00000000
> > debug_30 = 0x00000000
> > debug_31 = 0x00000000
> > debug_32 = 0x00000000
> >
> > _______________________________________________
> > U-Boot mailing list
> > U-Boot at lists.denx.de
> > http://lists.denx.de/mailman/listinfo/u-boot
> >