nyan: Add a stub mainboard.

Old-Change-Id: Icdde4cf5e1abb3ae1ad14279ebc129919ba30074
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/170837
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit e9d87534ccacb42d508f1902786470798a2dbaea)

nyan: Add a "special-class" for aggregating BCT files into bct.cfg.

The config file which cbootimage processes to create a BCT could come from
multiple different files, individually selected based on config options,
and/or split up into different files for organizational purposes. This change
adds a special-class which collects those files and concatenates them all
together in a bct.cfg which can be processed more easily by other parts of the
build.

While the BCT files themselves are potentially very board specific, for
instance ones that hold memory timing information, this bit of code which
collects them is not. It has to be in each board file instead of alongside the
CPU, however, to ensure that the special class is set up before another
Makefile tries to use it. If we end up with lots of Tegra based boards which
duplicate this code over and over, we might want to revisit how this works.

Old-Change-Id: I58e1373434f89e69298990ea4643a19d8afdc309
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/170922
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 3ae44178b7084037a75e16ce161b1432abf4246a)

nyan: Add bct files for nyan.

There's a config option which selects between the emmc and spi config files
depending on what the firmware is intended to boot from. These are copied from
the files installed by the tegra-bct-nyan ebuild, except that the spi config
file has been modified so that there's only one copy of the BCT and so that it
only has one configuration. This is to save space in the final image.

Old-Change-Id: Ibf1b895bb3ed060d394fc6ffcec67b6972bb21e3
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/170923
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 6bbcffe04e8ae73c86bc05c577a67f909857e1c0)

Squashed three commits required to get nyan building since some patches
were out of order. Added a select to the nyan mainboard Kconfig to have
a rom size of 1024K to match the saved config on the chromium side.

Change-Id: I346dbb02d216adfea9707e40adf0a4d1e0fabf36
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6669
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>

10 files changed, 576 insertions, 0 deletions

diff --git a/src/mainboard/google/nyan/Kconfig b/src/mainboard/google/nyan/Kconfig
new file mode 100644
index 0000000000..5ac58d315f
--- /dev/null
+++ b/src/mainboard/google/nyan/Kconfig
@@ -0,0 +1,57 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright 2013 Google Inc.
+##
+## 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.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+if BOARD_GOOGLE_NYAN
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select SOC_NVIDIA_TEGRA124
+	select BOARD_ROMSIZE_KB_1024
+
+config MAINBOARD_DIR
+	string
+	default google/nyan
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "Nyan"
+
+config DRAM_SIZE_MB
+	int
+	default 2048
+
+choice
+	prompt "BCT boot media"
+	default BCT_CFG_SPI
+	help
+	  Which boot media to configure the BCT for.
+
+config BCT_CFG_SPI
+	bool "SPI"
+	help
+	  Configure the BCT for booting from SPI.
+
+config BCT_CFG_EMMC
+	bool "eMMC"
+	help
+	  Configure the BCT for booting from eMMC.
+
+endchoice
+
+endif # BOARD_GOOGLE_NYAN
diff --git a/src/mainboard/google/nyan/Makefile.inc b/src/mainboard/google/nyan/Makefile.inc
new file mode 100644
index 0000000000..3cf7dd249c
--- /dev/null
+++ b/src/mainboard/google/nyan/Makefile.inc
@@ -0,0 +1,32 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright 2013 Google Inc.
+##
+## 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.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+# Add a handler for BCT config files
+$(call add-special-class,bct-cfg)
+bct-cfg-handler= $(eval $(obj)/generated/bct.cfg: $(1)$(2))
+
+$(obj)/generated/bct.cfg:
+	@printf "    CAT        $(subst $(obj)/,,$(@))\n"
+	cat $^ > $@
+
+subdirs-y += bct
+
+romstage-y += romstage.c
+
+ramstage-y += mainboard.c
diff --git a/src/mainboard/google/nyan/bct/Makefile.inc b/src/mainboard/google/nyan/bct/Makefile.inc
new file mode 100644
index 0000000000..2442c53e8c
--- /dev/null
+++ b/src/mainboard/google/nyan/bct/Makefile.inc
@@ -0,0 +1,23 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright 2013 Google Inc.
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+bct-cfg-$(CONFIG_BCT_CFG_EMMC) += emmc.cfg
+bct-cfg-$(CONFIG_BCT_CFG_SPI) += spi.cfg
+bct-cfg-y += odmdata.cfg
+bct-cfg-y += sdram.cfg
diff --git a/src/mainboard/google/nyan/bct/emmc.cfg b/src/mainboard/google/nyan/bct/emmc.cfg
new file mode 100644
index 0000000000..be8f79fd07
--- /dev/null
+++ b/src/mainboard/google/nyan/bct/emmc.cfg
@@ -0,0 +1,13 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Distributed under the terms of the GNU General Public License v2
+
+Version       = 0x00350001;
+BlockSize     = 0x00004000;
+PageSize      = 0x00000200;
+PartitionSize = 0x01000000;
+
+DevType[0] = NvBootDevType_Sdmmc;
+DeviceParam[0].SdmmcParams.ClockDivider           = 0x00000009;
+DeviceParam[0].SdmmcParams.DataWidth              = NvBootSdmmcDataWidth_8Bit;
+DeviceParam[0].SdmmcParams.MaxPowerClassSupported = 0x00000000;
+DeviceParam[0].SdmmcParams.MultiPageSupport       = 0x00000000;
diff --git a/src/mainboard/google/nyan/bct/odmdata.cfg b/src/mainboard/google/nyan/bct/odmdata.cfg
new file mode 100644
index 0000000000..d0ab2bf8fb
--- /dev/null
+++ b/src/mainboard/google/nyan/bct/odmdata.cfg
@@ -0,0 +1 @@
+OdmData		= 0x80080000;
diff --git a/src/mainboard/google/nyan/bct/sdram.cfg b/src/mainboard/google/nyan/bct/sdram.cfg
new file mode 100644
index 0000000000..fa3271a160
--- /dev/null
+++ b/src/mainboard/google/nyan/bct/sdram.cfg
@@ -0,0 +1,346 @@
+# CFG Version 11
+# Do not edit. Generated by gen_sdram_cfg V5.0.1. Command:
+#   gen_sdram_cfg -i ddr3_256Mx16x4_H5TC4G63AFR_RDA.par 1.082 -dram_board_cfg 10 -fly_by_time_ps 1650
+#      -b PM358/PM358_924MHz_emc_reg.txt -o PM358_Hynix_2GB_H5TC4G63AFR_RDA_924Mhz.cfg
+# Parameter file: ddr3_256Mx16x4_H5TC4G63AFR_RDA.par, tck = 1.08 ns (924.21 MHz)
+# bkv file: PM358/PM358_924MHz_emc_reg.txt
+SDRAM[0].MemoryType                               = NvBootMemoryType_Ddr3;
+SDRAM[0].PllMInputDivider                         = 0x00000001;
+SDRAM[0].PllMFeedbackDivider                      = 0x0000004d;
+SDRAM[0].PllMStableTime                           = 0x0000012c;
+SDRAM[0].PllMSetupControl                         = 0x00000000;
+SDRAM[0].PllMSelectDiv2                           = 0x00000000;
+SDRAM[0].PllMPDLshiftPh45                         = 0x00000001;
+SDRAM[0].PllMPDLshiftPh90                         = 0x00000001;
+SDRAM[0].PllMPDLshiftPh135                        = 0x00000001;
+SDRAM[0].PllMKCP                                  = 0x00000000;
+SDRAM[0].PllMKVCO                                 = 0x00000000;
+SDRAM[0].EmcBctSpare0                             = 0x00000000;
+SDRAM[0].EmcBctSpare1                             = 0x00000000;
+SDRAM[0].EmcBctSpare2                             = 0x00000000;
+SDRAM[0].EmcBctSpare3                             = 0x00000000;
+SDRAM[0].EmcBctSpare4                             = 0x00000000;
+SDRAM[0].EmcBctSpare5                             = 0x00000000;
+SDRAM[0].EmcBctSpare6                             = 0x00000000;
+SDRAM[0].EmcBctSpare7                             = 0x00000000;
+SDRAM[0].EmcBctSpare8                             = 0x00000000;
+SDRAM[0].EmcBctSpare9                             = 0x00000000;
+SDRAM[0].EmcBctSpare10                            = 0x00000000;
+SDRAM[0].EmcBctSpare11                            = 0x00000000;
+SDRAM[0].EmcClockSource                           = 0x80000000;
+SDRAM[0].EmcAutoCalInterval                       = 0x001fffff;
+SDRAM[0].EmcAutoCalConfig                         = 0xa1430404;
+SDRAM[0].EmcAutoCalConfig2                        = 0x00000000;
+SDRAM[0].EmcAutoCalConfig3                        = 0x00000000;
+SDRAM[0].EmcAutoCalWait                           = 0x00000190;
+SDRAM[0].EmcAdrCfg                                = 0x00000000;
+SDRAM[0].EmcPinProgramWait                        = 0x00000001;
+SDRAM[0].EmcPinExtraWait                          = 0x00000000;
+SDRAM[0].EmcTimingControlWait                     = 0x00000000;
+SDRAM[0].EmcRc                                    = 0x0000002b;
+SDRAM[0].EmcRfc                                   = 0x000000ef;
+SDRAM[0].EmcRfcSlr                                = 0x00000000;
+SDRAM[0].EmcRas                                   = 0x0000001e;
+SDRAM[0].EmcRp                                    = 0x0000000b;
+SDRAM[0].EmcR2r                                   = 0x00000000;
+SDRAM[0].EmcW2w                                   = 0x00000000;
+SDRAM[0].EmcR2w                                   = 0x00000008;
+SDRAM[0].EmcW2r                                   = 0x0000000f;
+SDRAM[0].EmcR2p                                   = 0x00000005;
+SDRAM[0].EmcW2p                                   = 0x00000016;
+SDRAM[0].EmcRdRcd                                 = 0x0000000b;
+SDRAM[0].EmcWrRcd                                 = 0x0000000b;
+SDRAM[0].EmcRrd                                   = 0x00000004;
+SDRAM[0].EmcRext                                  = 0x00000002;
+SDRAM[0].EmcWext                                  = 0x00000000;
+SDRAM[0].EmcWdv                                   = 0x00000006;
+SDRAM[0].EmcWdvMask                               = 0x00000006;
+SDRAM[0].EmcQUse                                  = 0x0000000c;
+SDRAM[0].EmcQuseWidth                             = 0x00000002;
+SDRAM[0].EmcIbdly                                 = 0x00000000;
+SDRAM[0].EmcEInput                                = 0x00000002;
+SDRAM[0].EmcEInputDuration                        = 0x0000000e;
+SDRAM[0].EmcPutermExtra                           = 0x000a0000;
+SDRAM[0].EmcPutermWidth                           = 0x00000004;
+SDRAM[0].EmcPutermAdj                             = 0x00000000;
+SDRAM[0].EmcCdbCntl1                              = 0x00000000;
+SDRAM[0].EmcCdbCntl2                              = 0x00000000;
+SDRAM[0].EmcCdbCntl3                              = 0x00000000;
+SDRAM[0].EmcQRst                                  = 0x00000001;
+SDRAM[0].EmcQSafe                                 = 0x00000015;
+SDRAM[0].EmcRdv                                   = 0x0000001b;
+SDRAM[0].EmcRdvMask                               = 0x0000001d;
+SDRAM[0].EmcQpop                                  = 0x00000010;
+SDRAM[0].EmcCtt                                   = 0x00000000;
+SDRAM[0].EmcCttDuration                           = 0x00000004;
+SDRAM[0].EmcRefresh                               = 0x00001be9;
+SDRAM[0].EmcBurstRefreshNum                       = 0x00000000;
+SDRAM[0].EmcPreRefreshReqCnt                      = 0x000006fa;
+SDRAM[0].EmcPdEx2Wr                               = 0x00000004;
+SDRAM[0].EmcPdEx2Rd                               = 0x00000015;
+SDRAM[0].EmcPChg2Pden                             = 0x00000001;
+SDRAM[0].EmcAct2Pden                              = 0x00000000;
+SDRAM[0].EmcAr2Pden                               = 0x000000e6;
+SDRAM[0].EmcRw2Pden                               = 0x0000001b;
+SDRAM[0].EmcTxsr                                  = 0x000000fa;
+SDRAM[0].EmcTxsrDll                               = 0x00000200;
+SDRAM[0].EmcTcke                                  = 0x00000006;
+SDRAM[0].EmcTckesr                                = 0x00000007;
+SDRAM[0].EmcTpd                                   = 0x00000006;
+SDRAM[0].EmcTfaw                                  = 0x00000022;
+SDRAM[0].EmcTrpab                                 = 0x00000000;
+SDRAM[0].EmcTClkStable                            = 0x0000000a;
+SDRAM[0].EmcTClkStop                              = 0x0000000a;
+SDRAM[0].EmcTRefBw                                = 0x00001c29;
+SDRAM[0].EmcFbioCfg5                              = 0x104ab898;
+SDRAM[0].EmcFbioCfg6                              = 0x00000002;
+SDRAM[0].EmcFbioSpare                             = 0x00000000;
+SDRAM[0].EmcCfgRsv                                = 0xff00ff00;
+SDRAM[0].EmcMrs                                   = 0x80000f15;
+SDRAM[0].EmcEmrs                                  = 0x80100002;
+SDRAM[0].EmcEmrs2                                 = 0x80200020;
+SDRAM[0].EmcEmrs3                                 = 0x80300000;
+SDRAM[0].EmcMrw1                                  = 0x00000000;
+SDRAM[0].EmcMrw2                                  = 0x00000000;
+SDRAM[0].EmcMrw3                                  = 0x00000000;
+SDRAM[0].EmcMrw4                                  = 0x00000000;
+SDRAM[0].EmcMrwExtra                              = 0x00000000;
+SDRAM[0].EmcWarmBootMrwExtra                      = 0x00000000;
+SDRAM[0].EmcWarmBootExtraModeRegWriteEnable       = 0x00000000;
+SDRAM[0].EmcExtraModeRegWriteEnable               = 0x00000000;
+SDRAM[0].EmcMrwResetCommand                       = 0x00000000;
+SDRAM[0].EmcMrwResetNInitWait                     = 0x00000000;
+SDRAM[0].EmcMrsWaitCnt                            = 0x00ce000e;
+SDRAM[0].EmcMrsWaitCnt2                           = 0x00ce000e;
+SDRAM[0].EmcCfg                                   = 0x73300000;
+SDRAM[0].EmcCfg2                                  = 0x000008a5;
+SDRAM[0].EmcCfgPipe                               = 0x00000000;
+SDRAM[0].EmcDbg                                   = 0x01000c00;
+SDRAM[0].EmcCmdQ                                  = 0x10004408;
+SDRAM[0].EmcMc2EmcQ                               = 0x06000404;
+SDRAM[0].EmcDynSelfRefControl                     = 0x800037ed;
+SDRAM[0].AhbArbitrationXbarCtrlMemInitDone        = 0x00000001;
+SDRAM[0].EmcCfgDigDll                             = 0xe00401b1;
+SDRAM[0].EmcCfgDigDllPeriod                       = 0x00008000;
+SDRAM[0].EmcDevSelect                             = 0x00000002;
+SDRAM[0].EmcSelDpdCtrl                            = 0x00040000;
+SDRAM[0].EmcDllXformDqs0                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs1                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs2                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs3                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs4                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs5                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs6                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs7                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs8                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs9                          = 0x00000005;
+SDRAM[0].EmcDllXformDqs10                         = 0x00000005;
+SDRAM[0].EmcDllXformDqs11                         = 0x00000005;
+SDRAM[0].EmcDllXformDqs12                         = 0x00000005;
+SDRAM[0].EmcDllXformDqs13                         = 0x00000005;
+SDRAM[0].EmcDllXformDqs14                         = 0x00000005;
+SDRAM[0].EmcDllXformDqs15                         = 0x00000005;
+SDRAM[0].EmcDllXformQUse0                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse1                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse2                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse3                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse4                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse5                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse6                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse7                         = 0x00000000;
+SDRAM[0].EmcDllXformAddr0                         = 0x0000400e;
+SDRAM[0].EmcDllXformAddr1                         = 0x0000400e;
+SDRAM[0].EmcDllXformAddr2                         = 0x00000000;
+SDRAM[0].EmcDllXformAddr3                         = 0x0000400e;
+SDRAM[0].EmcDllXformAddr4                         = 0x0000400e;
+SDRAM[0].EmcDllXformAddr5                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse8                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse9                         = 0x00000000;
+SDRAM[0].EmcDllXformQUse10                        = 0x00000000;
+SDRAM[0].EmcDllXformQUse11                        = 0x00000000;
+SDRAM[0].EmcDllXformQUse12                        = 0x00000000;
+SDRAM[0].EmcDllXformQUse13                        = 0x00000000;
+SDRAM[0].EmcDllXformQUse14                        = 0x00000000;
+SDRAM[0].EmcDllXformQUse15                        = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs0                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs1                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs2                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs3                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs4                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs5                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs6                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs7                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs8                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs9                         = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs10                        = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs11                        = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs12                        = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs13                        = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs14                        = 0x00000000;
+SDRAM[0].EmcDliTrimTxDqs15                        = 0x00000000;
+SDRAM[0].EmcDllXformDq0                           = 0x00000006;
+SDRAM[0].EmcDllXformDq1                           = 0x00000006;
+SDRAM[0].EmcDllXformDq2                           = 0x00000006;
+SDRAM[0].EmcDllXformDq3                           = 0x00000006;
+SDRAM[0].EmcDllXformDq4                           = 0x00000006;
+SDRAM[0].EmcDllXformDq5                           = 0x00000006;
+SDRAM[0].EmcDllXformDq6                           = 0x00000006;
+SDRAM[0].EmcDllXformDq7                           = 0x00000006;
+SDRAM[0].WarmBootWait                             = 0x00000002;
+SDRAM[0].EmcCttTermCtrl                           = 0x00000802;
+SDRAM[0].EmcOdtWrite                              = 0x00000000;
+SDRAM[0].EmcOdtRead                               = 0x00000000;
+SDRAM[0].EmcZcalInterval                          = 0x00020000;
+SDRAM[0].EmcZcalWaitCnt                           = 0x0000004c;
+SDRAM[0].EmcZcalMrwCmd                            = 0x80000000;
+SDRAM[0].EmcMrsResetDll                           = 0x00000000;
+SDRAM[0].EmcZcalInitDev0                          = 0x80000011;
+SDRAM[0].EmcZcalInitDev1                          = 0x00000000;
+SDRAM[0].EmcZcalInitWait                          = 0x00000001;
+SDRAM[0].EmcZcalWarmColdBootEnables               = 0x00000003;
+SDRAM[0].EmcMrwLpddr2ZcalWarmBoot                 = 0x040a00ab;
+SDRAM[0].EmcZqCalDdr3WarmBoot                     = 0x00000000;
+SDRAM[0].EmcZcalWarmBootWait                      = 0x00000001;
+SDRAM[0].EmcMrsWarmBootEnable                     = 0x00000001;
+SDRAM[0].EmcMrsResetDllWait                       = 0x00000000;
+SDRAM[0].EmcMrsExtra                              = 0x80000f15;
+SDRAM[0].EmcWarmBootMrsExtra                      = 0x80100002;
+SDRAM[0].EmcEmrsDdr2DllEnable                     = 0x00000000;
+SDRAM[0].EmcMrsDdr2DllReset                       = 0x00000000;
+SDRAM[0].EmcEmrsDdr2OcdCalib                      = 0x00000000;
+SDRAM[0].EmcDdr2Wait                              = 0x00000000;
+SDRAM[0].EmcClkenOverride                         = 0x00000000;
+SDRAM[0].McDisExtraSnapLevels                     = 0x00000000;
+SDRAM[0].EmcExtraRefreshNum                       = 0x00000002;
+SDRAM[0].EmcClkenOverrideAllWarmBoot              = 0x00000000;
+SDRAM[0].McClkenOverrideAllWarmBoot               = 0x00000000;
+SDRAM[0].EmcCfgDigDllPeriodWarmBoot               = 0x00000003;
+SDRAM[0].PmcVddpSel                               = 0x00000002;
+SDRAM[0].PmcVddpSelWait                           = 0x00000002;
+SDRAM[0].PmcDdrPwr                                = 0x00000003;
+SDRAM[0].PmcDdrCfg                                = 0x00002002;
+SDRAM[0].PmcIoDpd3Req                             = 0x4fff2f97;
+SDRAM[0].PmcIoDpd3ReqWait                         = 0x00000000;
+SDRAM[0].PmcRegShort                              = 0x00000000;
+SDRAM[0].PmcNoIoPower                             = 0x00000000;
+SDRAM[0].PmcPorDpdCtrlWait                        = 0x00000000;
+SDRAM[0].EmcXm2CmdPadCtrl                         = 0x100002a0;
+SDRAM[0].EmcXm2CmdPadCtrl2                        = 0x770c0000;
+SDRAM[0].EmcXm2CmdPadCtrl3                        = 0x050c0000;
+SDRAM[0].EmcXm2CmdPadCtrl4                        = 0x00000000;
+SDRAM[0].EmcXm2CmdPadCtrl5                        = 0x00111111;
+SDRAM[0].EmcXm2DqsPadCtrl                         = 0x770c1414;
+SDRAM[0].EmcXm2DqsPadCtrl2                        = 0x0020013d;
+SDRAM[0].EmcXm2DqsPadCtrl3                        = 0x55555520;
+SDRAM[0].EmcXm2DqsPadCtrl4                        = 0x003cf3cf;
+SDRAM[0].EmcXm2DqsPadCtrl5                        = 0x003cf3cf;
+SDRAM[0].EmcXm2DqsPadCtrl6                        = 0x55555500;
+SDRAM[0].EmcXm2DqPadCtrl                          = 0x770c2990;
+SDRAM[0].EmcXm2DqPadCtrl2                         = 0x00000000;
+SDRAM[0].EmcXm2DqPadCtrl3                         = 0x00000000;
+SDRAM[0].EmcXm2ClkPadCtrl                         = 0x77ffc085;
+SDRAM[0].EmcXm2ClkPadCtrl2                        = 0x00000303;
+SDRAM[0].EmcXm2CompPadCtrl                        = 0x81f1f108;
+SDRAM[0].EmcXm2VttGenPadCtrl                      = 0x07070004;
+SDRAM[0].EmcXm2VttGenPadCtrl2                     = 0x00000000;
+SDRAM[0].EmcXm2VttGenPadCtrl3                     = 0x016eeeee;
+SDRAM[0].EmcAcpdControl                           = 0x00000000;
+SDRAM[0].EmcSwizzleRank0ByteCfg                   = 0x00003120;
+SDRAM[0].EmcSwizzleRank0Byte0                     = 0x25143067;
+SDRAM[0].EmcSwizzleRank0Byte1                     = 0x45367102;
+SDRAM[0].EmcSwizzleRank0Byte2                     = 0x47106253;
+SDRAM[0].EmcSwizzleRank0Byte3                     = 0x04362175;
+SDRAM[0].EmcSwizzleRank1ByteCfg                   = 0x00003120;
+SDRAM[0].EmcSwizzleRank1Byte0                     = 0x71546032;
+SDRAM[0].EmcSwizzleRank1Byte1                     = 0x35104276;
+SDRAM[0].EmcSwizzleRank1Byte2                     = 0x27043615;
+SDRAM[0].EmcSwizzleRank1Byte3                     = 0x72306145;
+SDRAM[0].EmcDsrVttgenDrv                          = 0x0606003f;
+SDRAM[0].EmcTxdsrvttgen                           = 0x00000000;
+SDRAM[0].EmcBgbiasCtl0                            = 0x00000000;
+SDRAM[0].McEmemAdrCfg                             = 0x00000000;
+SDRAM[0].McEmemAdrCfgDev0                         = 0x00080303;
+SDRAM[0].McEmemAdrCfgDev1                         = 0x00080303;
+SDRAM[0].McEmemAdrCfgBankMask0                    = 0x00001248;
+SDRAM[0].McEmemAdrCfgBankMask1                    = 0x00002490;
+SDRAM[0].McEmemAdrCfgBankMask2                    = 0x00000920;
+SDRAM[0].McEmemAdrCfgBankSwizzle3                 = 0x00000001;
+SDRAM[0].McEmemCfg                                = 0x00000800;
+SDRAM[0].McEmemArbCfg                             = 0x0e00000d;
+SDRAM[0].McEmemArbOutstandingReq                  = 0x80000040;
+SDRAM[0].McEmemArbTimingRcd                       = 0x00000005;
+SDRAM[0].McEmemArbTimingRp                        = 0x00000006;
+SDRAM[0].McEmemArbTimingRc                        = 0x00000016;
+SDRAM[0].McEmemArbTimingRas                       = 0x0000000e;
+SDRAM[0].McEmemArbTimingFaw                       = 0x00000011;
+SDRAM[0].McEmemArbTimingRrd                       = 0x00000002;
+SDRAM[0].McEmemArbTimingRap2Pre                   = 0x00000004;
+SDRAM[0].McEmemArbTimingWap2Pre                   = 0x0000000e;
+SDRAM[0].McEmemArbTimingR2R                       = 0x00000002;
+SDRAM[0].McEmemArbTimingW2W                       = 0x00000002;
+SDRAM[0].McEmemArbTimingR2W                       = 0x00000006;
+SDRAM[0].McEmemArbTimingW2R                       = 0x00000009;
+SDRAM[0].McEmemArbDaTurns                         = 0x09060202;
+SDRAM[0].McEmemArbDaCovers                        = 0x001a1016;
+SDRAM[0].McEmemArbMisc0                           = 0x734e2a17;
+SDRAM[0].McEmemArbMisc1                           = 0x70000f02;
+SDRAM[0].McEmemArbRing1Throttle                   = 0x001f0000;
+SDRAM[0].McEmemArbOverride                        = 0x10000000;
+SDRAM[0].McEmemArbOverride1                       = 0x00000000;
+SDRAM[0].McEmemArbRsv                             = 0xff00ff00;
+SDRAM[0].McClkenOverride                          = 0x00000000;
+SDRAM[0].McStatControl                            = 0x00000000;
+SDRAM[0].McDisplaySnapRing                        = 0x00000003;
+SDRAM[0].McVideoProtectBom                        = 0xfff00000;
+SDRAM[0].McVideoProtectBomAdrHi                   = 0x00000000;
+SDRAM[0].McVideoProtectSizeMb                     = 0x00000000;
+SDRAM[0].McVideoProtectVprOverride                = 0xe4bac743;
+SDRAM[0].McVideoProtectVprOverride1               = 0x00000013;
+SDRAM[0].McVideoProtectGpuOverride0               = 0x00000000;
+SDRAM[0].McVideoProtectGpuOverride1               = 0x00000000;
+SDRAM[0].McSecCarveoutBom                         = 0xfff00000;
+SDRAM[0].McSecCarveoutAdrHi                       = 0x00000000;
+SDRAM[0].McSecCarveoutSizeMb                      = 0x00000000;
+SDRAM[0].McVideoProtectWriteAccess                = 0x00000000;
+SDRAM[0].McSecCarveoutProtectWriteAccess          = 0x00000000;
+SDRAM[0].EmcCaTrainingEnable                      = 0x00000000;
+SDRAM[0].EmcCaTrainingTimingCntl1                 = 0x1f7df7df;
+SDRAM[0].EmcCaTrainingTimingCntl2                 = 0x0000001f;
+SDRAM[0].SwizzleRankByteEncode                    = 0x0000006f;
+SDRAM[0].BootRomPatchControl                      = 0x00000000;
+SDRAM[0].BootRomPatchData                         = 0x00000000;
+SDRAM[0].McMtsCarveoutBom                         = 0xfff00000;
+SDRAM[0].McMtsCarveoutAdrHi                       = 0x00000000;
+SDRAM[0].McMtsCarveoutSizeMb                      = 0x00000000;
+SDRAM[0].McMtsCarveoutRegCtrl                     = 0x00000000;
+#@ MC_MLL_MPCORER_PTSA_RATE {0x7001944c}          = 0x00000017;
+#@ MC_PTSA_GRANT_DECREMENT {0x70019960}           = 0x000001bb;
+#@ MC_LATENCY_ALLOWANCE_XUSB_0 {0x7001937c}       = 0x006e0038;
+#@ MC_LATENCY_ALLOWANCE_XUSB_1 {0x70019380}       = 0x006e0038;
+#@ MC_LATENCY_ALLOWANCE_TSEC_0 {0x70019390}       = 0x006e003c;
+#@ MC_LATENCY_ALLOWANCE_SDMMCA_0 {0x700193b8}     = 0x006e0090;
+#@ MC_LATENCY_ALLOWANCE_SDMMCAA_0 {0x700193bc}    = 0x006e0041;
+#@ MC_LATENCY_ALLOWANCE_SDMMC_0 {0x700193c0}      = 0x006e0090;
+#@ MC_LATENCY_ALLOWANCE_SDMMCAB_0 {0x700193c4}    = 0x006e0041;
+#@ MC_LATENCY_ALLOWANCE_PPCS_0 {0x70019344}       = 0x00270049;
+#@ MC_LATENCY_ALLOWANCE_PPCS_1 {0x70019348}       = 0x006e0080;
+#@ MC_LATENCY_ALLOWANCE_MPCORE_0 {0x70019320}     = 0x006e0004;
+#@ MC_LATENCY_ALLOWANCE_MPCORELP_0 {0x70019324}   = 0x006e0004;
+#@ MC_LATENCY_ALLOWANCE_HC_0 {0x70019310}         = 0x00080016;
+#@ MC_LATENCY_ALLOWANCE_HC_1 {0x70019314}         = 0x0000006e;
+#@ MC_LATENCY_ALLOWANCE_AVPC_0 {0x700192e4}       = 0x006e0004;
+#@ MC_LATENCY_ALLOWANCE_GPU_0 {0x700193ac}        = 0x006e0019;
+#@ MC_LATENCY_ALLOWANCE_MSENC_0 {0x70019328}      = 0x006e0018;
+#@ MC_LATENCY_ALLOWANCE_HDA_0 {0x70019318}        = 0x006e0024;
+#@ MC_LATENCY_ALLOWANCE_VIC_0 {0x70019394}        = 0x006e001b;
+#@ MC_LATENCY_ALLOWANCE_VI2_0 {0x70019398}        = 0x0000006e;
+#@ MC_LATENCY_ALLOWANCE_ISP2_0 {0x70019370}       = 0x00000036;
+#@ MC_LATENCY_ALLOWANCE_ISP2_1 {0x70019374}       = 0x006e006e;
+#@ MC_LATENCY_ALLOWANCE_ISP2B_0 {0x70019384}      = 0x00000036;
+#@ MC_LATENCY_ALLOWANCE_ISP2B_1 {0x70019388}      = 0x006e006e;
+#@ MC_LATENCY_ALLOWANCE_VDE_0 {0x70019354}        = 0x00d400ff;
+#@ MC_LATENCY_ALLOWANCE_VDE_1 {0x70019358}        = 0x00510029;
+#@ MC_LATENCY_ALLOWANCE_VDE_2 {0x7001935c}        = 0x006e006e;
+#@ MC_LATENCY_ALLOWANCE_VDE_3 {0x70019360}        = 0x006e006e;
+#@ MC_LATENCY_ALLOWANCE_SATA_0 {0x70019350}       = 0x006e0065;
+#@ MC_LATENCY_ALLOWANCE_AFI_0 {0x700192e0}        = 0x006e001c;
diff --git a/src/mainboard/google/nyan/bct/spi.cfg b/src/mainboard/google/nyan/bct/spi.cfg
new file mode 100644
index 0000000000..b348ed82f3
--- /dev/null
+++ b/src/mainboard/google/nyan/bct/spi.cfg
@@ -0,0 +1,16 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Distributed under the terms of the GNU General Public License v2
+
+Version       = 0x00350001;
+BlockSize     = 32768;
+PageSize      = 2048;
+PartitionSize = 4194304;
+
+Bctcopy = 1;
+
+DevType[0] = NvBootDevType_Spi;
+DeviceParam[0].SpiFlashParams.ReadCommandTypeFast = NV_FALSE;
+DeviceParam[0].SpiFlashParams.ClockDivider        = 0x16;
+DeviceParam[0].SpiFlashParams.ClockSource         = NvBootSpiClockSource_PllPOut0;
+DeviceParam[0].SpiFlashParams.PageSize2kor16k     = 0;
+
diff --git a/src/mainboard/google/nyan/devicetree.cb b/src/mainboard/google/nyan/devicetree.cb
new file mode 100644
index 0000000000..392a5ae0c1
--- /dev/null
+++ b/src/mainboard/google/nyan/devicetree.cb
@@ -0,0 +1,22 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright 2013 Google Inc.
+##
+## 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.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+chip soc/nvidia/tegra124
+	device cpu_cluster 0 on end
+end
diff --git a/src/mainboard/google/nyan/mainboard.c b/src/mainboard/google/nyan/mainboard.c
new file mode 100644
index 0000000000..9e080214b0
--- /dev/null
+++ b/src/mainboard/google/nyan/mainboard.c
@@ -0,0 +1,36 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <device/device.h>
+#include <boot/coreboot_tables.h>
+
+/* this happens after cpu_init where exynos resources are set */
+static void mainboard_init(device_t dev)
+{
+}
+
+static void mainboard_enable(device_t dev)
+{
+	dev->ops->init = &mainboard_init;
+}
+
+struct chip_operations mainboard_ops = {
+	.name	= "nyan",
+	.enable_dev = mainboard_enable,
+};
diff --git a/src/mainboard/google/nyan/romstage.c b/src/mainboard/google/nyan/romstage.c
new file mode 100644
index 0000000000..c52fbd2670
--- /dev/null
+++ b/src/mainboard/google/nyan/romstage.c
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/stages.h>
+#include <cbfs.h>
+#include <console/console.h>
+
+void main(void)
+{
+	void *entry;
+
+	entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/coreboot_ram");
+	stage_exit(entry);
+}