diff options
Diffstat (limited to 'src/mainboard/intel/minnowmax')
| -rw-r--r-- | src/mainboard/intel/minnowmax/romstage.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/mainboard/intel/minnowmax/romstage.c b/src/mainboard/intel/minnowmax/romstage.c index 6f40207ffc..38b7e0d6ff 100644 --- a/src/mainboard/intel/minnowmax/romstage.c +++ b/src/mainboard/intel/minnowmax/romstage.c @@ -4,6 +4,7 @@ * Copyright (C) 2013 Google Inc. * Copyright (C) 2013 Sage Electronic Engineering, LLC. * Copyright (C) 2014 Intel Corporation + * Copyright (C) 2018 CMR Surgical Limited * * 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 @@ -21,6 +22,7 @@ #include <console/console.h> #include <soc/gpio.h> #include <soc/intel/fsp_baytrail/chip.h> +#include <cpu/x86/tsc.h> /** * /brief mainboard call for setup that needs to be done before fsp init @@ -50,11 +52,68 @@ void late_mainboard_romstage_entry(void) } +/* Set up the default soldered down memory config for 1GB */ +static const MEMORY_DOWN_DATA minnowmax_memory_config[] = { + /* 1066 */ + { + .EnableMemoryDown = 1, + .DRAMSpeed = 1, /* DRAM Speed: 0=800, 1=1066, 2=1333, 3=1600*/ + .DRAMType = 1, /* DRAM Type: 0=DDR3, 1=DDR3L, 2=DDR3U, 4=LPDDR2, 5=LPDDR3, 6=DDR4*/ + .DIMM0Enable = 1, /* DIMM 0 Enable */ + .DIMM1Enable = 0, /* DIMM 1 Enable */ + .DIMMDWidth = 1, /* DRAM device data width: 0=x8, 1=x16, 2=x32*/ + .DIMMDensity = 1, /* DRAM device data density: 0=1Gb, 1=2Gb, 2=4Gb, 3=8Gb */ + .DIMMBusWidth = 3, /* DIMM Bus Width: 0=8bit, 1=16bit, 2=32bit, 3=64bit */ + .DIMMSides = 0, /* Ranks Per DIMM: 0=1rank, 1=2rank */ + .DIMMtCL = 11, /* tCL */ + .DIMMtRPtRCD = 11, /* tRP and tRCD in DRAM clk - 5:12.5ns, 6:15ns, etc. */ + .DIMMtWR = 12, /* tWR in DRAM clk */ + .DIMMtWTR = 6, /* tWTR in DRAM clk */ + .DIMMtRRD = 6, /* tRRD in DRAM clk */ + .DIMMtRTP = 6, /* tRTP in DRAM clk */ + .DIMMtFAW = 20, /* tFAW in DRAM clk */ + }, + /* 1333 */ + { + .EnableMemoryDown = 1, + .DRAMSpeed = 2, /* DRAM Speed: 0=800, 1=1066, 2=1333, 3=1600*/ + .DRAMType = 1, /* DRAM Type: 0=DDR3, 1=DDR3L, 2=DDR3U, 4=LPDDR2, 5=LPDDR3, 6=DDR4*/ + .DIMM0Enable = 1, /* DIMM 0 Enable */ + .DIMM1Enable = 0, /* DIMM 1 Enable */ + .DIMMDWidth = 1, /* DRAM device data width: 0=x8, 1=x16, 2=x32*/ + .DIMMDensity = 1, /* DRAM device data density: 0=1Gb, 1=2Gb, 2=4Gb, 3=8Gb */ + .DIMMBusWidth = 3, /* DIMM Bus Width: 0=8bit, 1=16bit, 2=32bit, 3=64bit */ + .DIMMSides = 0, /* Ranks Per DIMM: 0=1rank, 1=2rank */ + .DIMMtCL = 9, /* tCL */ + .DIMMtRPtRCD = 9, /* tRP and tRCD in DRAM clk - 5:12.5ns, 6:15ns, etc. */ + .DIMMtWR = 10, /* tWR in DRAM clk */ + .DIMMtWTR = 5, /* tWTR in DRAM clk */ + .DIMMtRRD = 4, /* tRRD in DRAM clk */ + .DIMMtRTP = 5, /* tRTP in DRAM clk */ + .DIMMtFAW = 30, /* tFAW in DRAM clk */ + } +}; + void romstage_fsp_rt_buffer_callback(FSP_INIT_RT_BUFFER *FspRtBuffer) { UPD_DATA_REGION *UpdData = FspRtBuffer->Common.UpdDataRgnPtr; u8 use_xhci = UpdData->PcdEnableXhci; u8 gpio5 = 0; + int is_1333_sku; + + /* + * The E3827 and E3845 SKUs are fused at 1333MHz DDR3 speeds. There's + * no good way of knowing the SKU'ing so frequency is used as a proxy. + * The E3805, E3815, E3825, and E3826 are all <= 1460MHz while the + * E3827 and E3845 are 1750MHz and 1910MHz, respectively. + */ + is_1333_sku = !!(tsc_freq_mhz() >= 1700); + + printk(BIOS_INFO, "Using %d MHz DDR3 settings.\n", + is_1333_sku ? 1333 : 1066); + + /* Set up soldered down memory parameters for 1GB */ + UpdData->PcdMemoryParameters = minnowmax_memory_config[is_1333_sku]; /* * Minnow Max Board |