tegra124/nyan: display, clock, and other updates

tegra124: Set Tx FIFO threshold value to recommended setting
Reviewed-on: https://chromium-review.googlesource.com/175200
(cherry picked from commit c8f086711c6ae2db70fc8e0d84b54f5952fbe0ad)

tegra124: add CLK_X definitions
Reviewed-on: https://chromium-review.googlesource.com/175220
(cherry picked from commit 3f8a844bd2f151e06d82d1a7fac4492c6bc9417d)

tegra124: fix incorrect struct member in clk_rst.h
Reviewed-on: https://chromium-review.googlesource.com/175270
(cherry picked from commit 967193d5984a086c297988caa580b61cb4d0414c)

tegra124: add the _x clocks to clock_enable_clear_reset
Reviewed-on: https://chromium-review.googlesource.com/175539
(cherry picked from commit df4c515d73b02061e5c98f51efd50e04b10d63f5)

tegra124: add clock support code for graphics.
Reviewed-on: https://chromium-review.googlesource.com/175162
(cherry picked from commit b8eb6ab4cdc5a583636c10fa05f947a244f94819)

tegra124: Clean up some #defines for DMA
Reviewed-on: https://chromium-review.googlesource.com/175631
(cherry picked from commit 1a0a900f2d060916c9878781b82113b16a7945d9)

tegra124: enable flow control for APBDMA in SPI driver
Reviewed-on: https://chromium-review.googlesource.com/175630
(cherry picked from commit 873e6f9e95f6cb0162fa06216682fbc71ab0202d)

nyan: move clock setup for the display out of dca_init
Reviewed-on: https://chromium-review.googlesource.com/175656
(cherry picked from commit 32dd9947a60298ff9488c911629802c257ed6afc)

tegra124: more display PLL setup and clock hardcode removal.
Reviewed-on: https://chromium-review.googlesource.com/175732
(cherry picked from commit 80402876b5daa9e9389fd4fab5f539d89c37fa7f)

tegra124: move dp.c from tegra to tegra124
Reviewed-on: https://chromium-review.googlesource.com/175830
(cherry picked from commit e98be569b0ba7f4d565ce677343a317db08344e0)

tegra124: clean up tabbing; nyan: add a comment and setting to devicetree.cb
Reviewed-on: https://chromium-review.googlesource.com/175889
(cherry picked from commit 4e513196b0014c5a82079f3aa87c2efbeb645484)

tegra: get rid of struct members that are not used
Reviewed-on: https://chromium-review.googlesource.com/176023
(cherry picked from commit 032b8a0c9fe0152ebc27344e93128865ecb918a6)

tegra124: Increase SCLK (AVP) to 300MHz
Reviewed-on: https://chromium-review.googlesource.com/175489
(cherry picked from commit 7e082f2c2f030950d652f1f87f637e15dee38552)

tegra124: Address old main CPU starting review feedback.
Reviewed-on: https://chromium-review.googlesource.com/175933
(cherry picked from commit 1d76ac71bd839dff9198e65132ec25212dd55ffd)

tegra124: Revise clock source configuration for irregular peripherals.
Reviewed-on: https://chromium-review.googlesource.com/176109
(cherry picked from commit 1021c215190602a2b8c1ab97d6c8313d89597d99)

nyan: add timestamps in romstage
Reviewed-on: https://chromium-review.googlesource.com/176172
(cherry picked from commit cd626aa10b56cd4da6ebda36fe487e44b08f3935)

tegra124: Allow enabling clock output for external peripherals.
Reviewed-on: https://chromium-review.googlesource.com/176108
(cherry picked from commit ea9fb6393ee80da77c9fbc30f605859c7009c9ed)

nyan: Enable and configure clocks for I2S and audio codec.
Reviewed-on: https://chromium-review.googlesource.com/176104
(cherry picked from commit 1fb659b3e73285ff8218c0f229734edd3b979ca4)

tegra124: Fix typo in pinmux name.
Reviewed-on: https://chromium-review.googlesource.com/176215
(cherry picked from commit c7915ad41a3f1d1452aa6d6d287aaa8eb9e85c34)

nyan: Add pinmux settings for audio peripherals.
Reviewed-on: https://chromium-review.googlesource.com/176212
(cherry picked from commit 37412f3201590e47a06d4678fa833164d370b41c)

nyan: De-array-ify the PMIC setup code.
Reviewed-on: https://chromium-review.googlesource.com/176903
(cherry picked from commit 86ab1ce9fbf6d5362af1ee37de1394412366f247)

nyan: Add a kconfig for building for the original nyans in pixel cases.
Reviewed-on: https://chromium-review.googlesource.com/176904
(cherry picked from commit 1d05fd5bc40d727826510ec81496ce4a49e257ed)

nyan: Set the CPU voltage differently depending on which PMIC is in use.
Reviewed-on: https://chromium-review.googlesource.com/176905
(cherry picked from commit 31507f6a575220737ee5683b312cd162600f89cc)

nyan: Increase the CPU voltage to 1.2V.
Reviewed-on: https://chromium-review.googlesource.com/176906
(cherry picked from commit fe4795e66b515c2523df09a8800ecac9a3f63557)

tegra124: Flesh out/tidy up the flow controller constants.
Reviewed-on: https://chromium-review.googlesource.com/177085
(cherry picked from commit b50d315506a5ab9c81b6bbaf8cf580dbb3e78794)

tegra124: When leaving the bootblock/AVP, really stop the AVP.
Reviewed-on: https://chromium-review.googlesource.com/177086
(cherry picked from commit 06c10df889d4d935bc99792df860d93766ae44dd)

nyan: Set SPI4 speed to 33MHz
Reviewed-on: https://chromium-review.googlesource.com/177038
(cherry picked from commit c98de65482fabdb5c76944fe3bf762191b3a0a55)

nyan: Do console_init() in romstage
Reviewed-on: https://chromium-review.googlesource.com/176763
(cherry picked from commit 0bec32e09eab28bc5ea49b7896a8b6f489143b03)

nyan: Add a prompt to the CONFIG_NYAN_IN_A_PIXEL option.
Reviewed-on: https://chromium-review.googlesource.com/177486
(cherry picked from commit 7cbb801d000dac4b39f76266ebef2585fe48faba)

nyan: Separate the SDRAM BCT config for the two nyans, and turn down norrin.
Reviewed-on: https://chromium-review.googlesource.com/177487
(cherry picked from commit 6b119685f6626d79d924af9f856ebb90af45a73f)

tegra124: Bump up HCLK and PCLK
Reviewed-on: https://chromium-review.googlesource.com/177563
(cherry picked from commit c25337dac8c3ecdd8ffe5b4d11acebb216132405)

nyan: Add some code for reading the board ID.
Reviewed-on: https://chromium-review.googlesource.com/177488
(cherry picked from commit 5fccbce99e7db312e2e3caf806c438c9b04c0a8f)

nyan: Use the board ID to decide how to initialize the PMIC.
Reviewed-on: https://chromium-review.googlesource.com/177489
(cherry picked from commit 677bdb9df55248da3a0c6be0089098f6d6807d3c)

nyan: Create kconfig variables for each SDRAM config.
Reviewed-on: https://chromium-review.googlesource.com/177580
(cherry picked from commit d7ddcf262a321f06289c4f2b2a6b43982dd96377)

tegra124: Mux some unused pins away from UARTA, and pull up the serial RX line.
Reviewed-on: https://chromium-review.googlesource.com/177637
(cherry picked from commit bd533cc109b0acf3495b04fa6622e250ba454fe9)

tegra124: Initialize the MCR when setting up the UART.
Reviewed-on: https://chromium-review.googlesource.com/177638
(cherry picked from commit 38c84786fc3e8fab913aebca176ac7b038cb0be6)

tegra124: fix SPI AHB burst length
Reviewed-on: https://chromium-review.googlesource.com/177564
(cherry picked from commit f29235263202c9b4a3dbb65da5727c8eefe44315)

tegra124: remove unneeded debug print in SPI code
Reviewed-on: https://chromium-review.googlesource.com/177833
(cherry picked from commit 34a50040268dbde1c326d315f8042a3905ddfb06)

nyan: Set up the SOC and TPM reset pin.
Reviewed-on: https://chromium-review.googlesource.com/177965
(cherry picked from commit b81a5bd15a2979ee009b9f7bc4a39a304e6a759a)

tegra124: Allow some time for packets to appear in Rx FIFO
Reviewed-on: https://chromium-review.googlesource.com/177832
(cherry picked from commit 8f70a25b1eea865a448525749ac18393f5b9ad84)

nyan: PMIC: Slam default init values for SDOs/LDOs in AS3722
Reviewed-on: https://chromium-review.googlesource.com/178226
(cherry picked from commit c536b0d82fd6fffbc0e2448e0d19d3f06df5d86a)

nyan: change devicetree for the new display settings.
Reviewed-on: https://chromium-review.googlesource.com/177958
(cherry picked from commit 43abed730f222c8a685c250a58c981268994a65d)

nyan: Switch USB VBUS GPIOs from outputs to pulled-up inputs
Reviewed-on: https://chromium-review.googlesource.com/178914
(cherry picked from commit e47b6a609b9d23694a466b56960d9d14ca5d6242)

Tegra124: nyan: Disable VPR
Reviewed-on: https://chromium-review.googlesource.com/179327
(cherry picked from commit 441aa276446141f1b92ed8fb98c9578597487f4d)

tegra124: norrin: fix display issue
Reviewed-on: https://chromium-review.googlesource.com/179745
(cherry picked from commit c1c1ae69f6058ed901f532e2c532d1e6ba1f81fb)

tegra124: Add iRAM layout information.
Reviewed-on: https://chromium-review.googlesource.com/179814
(cherry picked from commit d00f135c93a52ad4dced2edecb74e2dfc54bb2fa)

tegra124: Run bootblock and ROM stage out of DRAM.
Reviewed-on: https://chromium-review.googlesource.com/179822
(cherry picked from commit 2d3ec06ec39a489d02e798bb22bce4d7465b20ce)

nyan: clean up a comment regarding video
Reviewed-on: https://chromium-review.googlesource.com/180161
(cherry picked from commit 03b5e88a66b9c96df2ef3d9ce5ba4a62a8bb2447)

tegra124: norrin: the first step to clean up display code
Reviewed-on: https://chromium-review.googlesource.com/180135
(cherry picked from commit 9d0c12dfef28a1161604df9b3fcc113049b2747d)

Squashed 49 commits for tegra124/nyan.

Change-Id: Id67bfee725e703d3e2d8ac17f40844dc193e901d
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6883
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
arm: Put exception_stack into BSS

"Hey guys, I have this awesome idea! How about we put a huge array
filled with 0xa5 into the data segment of our uncompressed romstage
for no particular reason? Give our SPI driver something to do so it
doesn't get too bored, you know?"

Guess it pays off to just hexdump our image and sanity-check it top to
bottom every once in a while...

Also reduces the size because 8K is crazy just to print a bunch of
registers (256 bytes ought to be enough for anybody).

Old-Change-Id: Icec0a711a1b5140d2ebcd98338ec638a4b6262fa
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/176762
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit 61c360a1c3f445535c9ff383a389e643cfe4527c)

arm: Remove exception_test()

The exception_test() mechanism might have been useful when exceptions
were first implemented, but now that they are pretty stable it's really
not necessary anymore (especially not on every single boot in production
Chromebooks). It forces a simple unaligned access, and as we start
having exceptions in stages that might not have paging turned on yet,
it's better to remove that completely.

Also removed the duplicated implementations of SCTLR-stuff and switched
to the existing ones in cache.h.

Old-Change-Id: I85e66269f5e2f2dfd3e8aaaa18441493514b62f8
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/177101
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit d0706b848572fbea26e0e432ec5827503b9603c9)

Squashed 2 exception related commits.

Change-Id: Id2c115ee39a0732c375472afc0194436e2f5e069
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6885
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
arm: Move exception_init() close to console_init()

This patch adds stub implementations of exception_init() to all archs
so that it can be called from src/lib/hardwaremain.c. It also moves/adds
all other invocations of exception_init() (which needs to be rerun in
every stage) close to console_init(), in the hopes that it will be less
likely overlooked when creating future boards. Also added (an
ineffective) one to the armv4 bootblock implementations for consistency
and in case we want to implement it later.

Change-Id: Iecad10172d25f6c1fc54b0fec8165d7ef60e3414
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/176764
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit 2960623f4a59d841a13793ee906db8d1b1c16c5d)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6884
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)