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minnowmax: allow both 1333 and 1066 MHz memory SKUs 

The E3827 and E3845 SKUs are fused at 1333MHz DDR3 speeds.
Use frequency as a proxy to determine SKU. The E3805, E3815,
E3825, and E3826 are all <= 1460MHz while the E3827 and E3845
are 1750MHz and 1910MHz, respectively. This will allow to boot
quad-core Minnowboard Turbot especially.

Change-Id: I5e57dd419b443dfa742c8812cec87274af557728
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/27989
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Michał Żygowski 2018-08-09 18:24:04 +02:00 committed by Patrick Georgi
parent 9937a063d4
commit 7d89a452d5
1 changed files with 59 additions and 0 deletions
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59
src/mainboard/intel/minnowmax/romstage.c
View File

@ -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