14085 Commits

Author SHA1 Message Date
Thierry Reding
34e12e03c7 ARM: tegra: Implement cboot_get_ethaddr()
This function will attempt to look up an Ethernet address in the DTB
that was passed in from cboot. It does so by first trying to locate the
default Ethernet device for the board (identified by the "ethernet"
alias) and if found, reads the "local-mac-address" property. If the
"ethernet" alias does not exist, or if it points to a device tree node
that doesn't exist, or if the device tree node that it points to does
not have a "local-mac-address" property or if the value is invalid, it
will fall back to the legacy mechanism of looking for the MAC address
stored in the "nvidia,ethernet-mac" or "nvidia,ether-mac" properties of
the "/chosen" node.

The MAC address is then written to the default Ethernet device for the
board (again identified by the "ethernet" alias) in U-Boot's control
DTB. This allows the device driver for that device to read the MAC
address from the standard location in device tree.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:34 -07:00
Thierry Reding
ce353babdb ARM: tegra: Implement cboot_save_boot_params() in C
This is easier to deal with and works just as well for this simple
function.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:34 -07:00
Thierry Reding
a0dbc1314c ARM: tegra: Unify Tegra186 builds
Tegra186 build are currently dealt with in very special ways, which is
because Tegra186 is fundamentally different in many respects. It is no
longer necessary to do many of the low-level programming because early
boot firmware will already have taken care of it.

Unfortunately, separating Tegra186 builds from the rest in this way
makes it difficult to share code with prior generations of Tegra. With
all of the low-level programming code behind Kconfig guards, the build
for Tegra186 can again be unified.

As a side-effect, and partial reason for this change, other Tegra SoC
generations can now make use of the code that deals with taking over a
boot from earlier bootloaders. This used to be nvtboot, but has been
replaced by cboot nowadays. Rename the files and functions related to
this to avoid confusion. The implemented protocols are unchanged.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:34 -07:00
Thierry Reding
836a56e729 ARM: tegra: Workaround UDC boot issues only if necessary
Resetting the USB device controller on boot is only necessary if the SoC
actually has a UDC controller and U-Boot enables support for it. All the
Tegra boards support UDC via the ChipIdea UDC driver, so make the UDC on
boot workaround depend on the ChipIdea UDC driver.

This prevents a crash on Tegra186 which does not have the ChipIdea UDC.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:34 -07:00
Thierry Reding
f9ec2ec850 ARM: tegra: Support TZ-only access to PMC
Some devices may restrict access to the PMC to TrustZone software only.
Non-TZ software can detect this and use SMC calls to the firmware that
runs in the TrustZone to perform accesses to PMC registers.

Note that this also fixes reset_cpu() and the enterrcm command on
Tegra186 where they were previously trying to access the PMC at a wrong
physical address.

Based on work by Kalyani Chidambaram <kalyanic@nvidia.com> and Tom
Warren <twarren@nvidia.com>.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:34 -07:00
Thierry Reding
8f60d18f94 ARM: tegra: Fix save_boot_params() prototype
The save_boot_params() function takes as its first four arguments the
first four registers. On 32-bit ARM these are r0, r1, r2 and r3, all of
which are 32 bits wide. However, on 64-bit ARM thene registers are x0,
x1, x2 and x3, all of which are 64 bits wide. In order to allow reusing
the save_boot_params() implementation on 64-bit ARM, change it to take
unsigned long parameters rather than the fixed size 32-bit integers.
This ensures that the correct values are passed.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:33 -07:00
Thierry Reding
e19143b5eb ARM: tegra: Guard powergate code with a Kconfig symbol
Powergate code is not relevant on all Tegra SoC generations, so guard it
with a Kconfig symbol that can be selected by the generations that need
it.

This is in preparation for unifying Tegra186 code with the code used on
older generations.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:33 -07:00
Thierry Reding
07ea02bc2d ARM: tegra: Guard pin controller code with a Kconfig symbol
Pin controller code is not relevant on all Tegra SoC generations, so
guard it with a Kconfig symbol that can be selected by the generations
that need it.

This is in preparation for unifying Tegra186 code with the code used on
older generations.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:33 -07:00
Thierry Reding
1a869c703d ARM: tegra: Guard memory controller code with a Kconfig symbol
Memory controller code is not relevant on all Tegra SoC generations, so
guard it with a Kconfig symbol that can be selected by the generations
that need it.

This is in preparation for unifying Tegra186 code with the code used on
older generations.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:33 -07:00
Thierry Reding
9e57819294 ARM: tegra: Guard GP pad control code with a Kconfig symbol
The GP pad control code is not relevant on all Tegra SoC generations, so
guard it with a Kconfig symbol that can be selected by the generations
that need it.

This is in preparation for unifying Tegra186 code with the code used on
older generations.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:33 -07:00
Thierry Reding
b64e0b9231 ARM: tegra: Guard clock code with a Kconfig symbol
Clock code is not relevant on all Tegra SoC generations, so guard it
with a Kconfig symbol that can be selected by the generations that need
it.

This is in preparation for unifying Tegra186 code with the code used on
older generations.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:33 -07:00
Thierry Reding
e9c58f2bb8 ARM: tegra: Use common header for PMU declarations
There's no need to replicate the pmu.h header file for every Tegra SoC
generation. Use a single header that is shared across generations.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:33 -07:00
Thierry Reding
bf468e5e1a ARM: tegra: Remove disp1 clock initialization on Tegra210
pll_c is not a valid parent for the disp1 clock, so trying to set it
will fail. Given that display is not used in U-Boot, remove the init
table entry so that disp1 will keep its default parent (clk_m).

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:33 -07:00
Thierry Reding
bca7910b7d ARM: tegra: Fix mux type for disp1 and disp2 clocks on Tegra210
On Tegra210 the parents for the disp1 and disp2 clocks are slightly
different from earlier chips. Only pll_p, pll_d_out0, pll_d2_out0 and
clk_m are valid parents (technically pll_d_out is as well, but U-Boot
doesn't know anything about it). Fix up the type name and the mux
definition.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-06-05 09:16:32 -07:00
Bartosz Golaszewski
1f12208c6a arm: davinci: remove leftover assembly
There are no more users of lowlevel_init.S. Remove the file.

Suggested-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-06-05 12:14:02 -04:00
Adam Ford
33ac2b560b arm: omap3: Manually initialize GPIO if OF_CONTROL doesn't
The commong initialization code manually initializes the GPIO
even when OF_CONTROL does it, so we can reduce the code size a
bit by not doing it manually when we have device tree support.

Using the omap3_logic board (dm3730), the sizes shrunk:

Before:

   text	   data	    bss	    dec	    hex	filename
 561066	  28596	 116880	 706542	  ac7ee	u-boot
  55245	   1605	   1888	  58738	   e572	spl/u-boot-spl

After
  text	   data	    bss	    dec	    hex	filename
 560898	  28548	 116872	 706318	  ac70e	u-boot
  55121	   1557	   1888	  58566	   e4c6	spl/u-boot-spl

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-06-05 12:14:02 -04:00
Adam Ford
e3b7ff2476 ARM: DTS: imx6q-logicpd: Resync with Linux 5.1
Resync imx6q-logicpd with Kernel 5.1.5

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-06-05 12:14:02 -04:00
Adam Ford
b4d070fb5a ARM: davinci: Remove ipam390 linker script from Kconfig
With ipam390 support removed in we can remove the reference to the
linker script since that case will never be true.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-06-05 12:14:02 -04:00
Sekhar Nori
2a766db938 ARM: davinci: SPL: fix BSS initialization
U-Boot README recommends initializing SDRAM in board_init_f(). DA850
was doing it as part of board_init_r() (through call to spl_board_init()
which calls arch_cpu_init() which calls da850_ddr_setup())

This worked fine till commit 15b8c7505819 ("davinci:
da850evm/omapl138-lcdk: Move BSS to SDRAM because SRAM is full") moved
BSS to SDRAM.

Functions like mmc_initialize() called in board_init_r() assume BSS is
available. Since SDRAM was not initialized when arch/arm/lib/crt0.S tried
to initialize BSS to 0, BSS is not initialized correctly.

Fix this by simply calling arch_cpu_init() from board_init_f(). Also move
preloader_console_init() there to help debug issues with board_init_r().

With this spl_board_init() is no longer needed, we remove it.

Tested using MMC/SD boot on OMAP-L138 LCDK board.

Tested-by: Adam Ford <aford173@gmail.com> #da850evm
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Tested-by: Peter Howard <phoward@gme.net.au> #omapl138_lcdk
2019-06-05 12:14:02 -04:00
Igor Opaniuk
a589107d4f ARM: dts: colibri_imx7: Add lcdif node
Extend lcdif DT node with proper display-timings for mxsfb driver.

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2019-06-04 23:29:26 +02:00
Igor Opaniuk
8c1df09f07 video: mxsfb: add DM_VIDEO support
Extend the driver to build with DM_VIDEO enabled. DTS files
must additionally include 'u-boot,dm-pre-reloc' property in
soc and child nodes to enable driver binding to mxsfb device.

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2019-06-04 23:25:54 +02:00
Heinrich Schuchardt
6a853dbcc0 lib: time: export usec_to_tick()
In the UEFI Stall() boottime service we need access to usec_to_tick().

Export the function.

Remove redundant implementation in arch/arm/mach-rockchip/rk_timer.c.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-06-04 22:09:26 +02:00
Dennis Gilmore
7505075dff arm: mvebu: helios4: add MMC to SPL DT
This allows SPL to load the main U-Boot image from MMC once DM_MMC is
enabled.

Signed-off-by: Dennis Gilmore <dennis@ausil.us>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-06-04 08:33:24 +02:00
Tom Rini
8a802a2eef Merge tag 'rockchip-for-v2019.07-rc3' of git://git.denx.de/u-boot-rockchip
- some fix for rk3399-puma;
- rockchip script make_fit_atf.py cleanup
- Enable TPL for rk3399 orangepi and nanopi4;
- add support for rk3399 boards: Nanopi NEO4, Rockpro64, Rock PI 4;
2019-05-31 07:17:09 -04:00
Neil Armstrong
407544c2ef ARM: meson-gx: Reset GXL/GXM to external PHY when not using internal PHY
When using External PHY, reset the mux to use the external PHY in case U-Boot
was chainloaded from a misconfigured bootloader.

Fixes: 33e3378091 ("ARM: meson: rework soc arch file to prepare for new SoC")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-05-31 10:04:15 +02:00
Neil Armstrong
32f2880641 ARM: dts: Add missing DT for Meson G12A support
The following DT nodes in the process on review for Linux 5.3,
until Linux 5.3 is tagged, add the missing DT nodes in u-boot specific
DTSI files that will be dropped when the v5.3-rc1 DT is synced again.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-05-31 10:04:15 +02:00
Neil Armstrong
b1e81e67ee ARM: dts: sync Amlogic G12A DT with Linux 5.2-rc1
Sync from Linux commit a188339ca5a3 ("Linux 5.2-rc1")

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-05-31 09:57:49 +02:00
Jagan Teki
540c900dec rockchip: rk3399: Add Rock PI 4 support
Add initial support for Rock PI 4 board.

Specification
- Rockchip RK3399
- LPDDR4
- eMMC
- SD card slot
- RTL8211E 1Gbps
- HDMI In/Out, DP, MIPI DSI/CSI
- PCIe M.2
- USB 2.0, USB-3.0
- USB C Type

Commit details of rk3399-rock-pi-4.dts sync from Linux 5.1-rc2:
"arm64: dts: rockchip: add ROCK Pi 4 DTS support"
(sha1: 1b5715c602fda7b812af0e190eddcce2812e5417)

Signed-off-by: Akash Gajjar <akash@openedev.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2019-05-30 18:22:35 +08:00
Jagan Teki
001d6745e3 rockchip: rk3399: Add Rockpro64 board support
Add initial support for Rockpro64 board.

Specification
- Rockchip RK3399
- 2/4GB Dual-Channel LPDDR3
- SD card slot
- eMMC socket
- 128Mb SPI Flash
- Gigabit ethernet
- PCIe 4X slot
- WiFI/BT module socket
- HDMI In/Out, DP, MIPI DSI/CSI, eDP
- USB 3.0, 2.0
- USB Type C power and data
- GPIO expansion ports
- DC 12V/2A

Commit details of rk3399-rockpro64.dts sync from Linux 5.1-rc2:
"arm64: dts: rockchip: rockpro64 dts add usb regulator"
(sha1: 6db644c79c8d45d73b56bc389aebd85fc3679beb)

'Akash' has sent an initial patch before, so I keep him as board
maintainer and I'm co-maintainer based on our conversation.

Signed-off-by: Akash Gajjar <akash@openedev.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2019-05-30 18:22:35 +08:00
Jagan Teki
48b5c25f99 rockchip: rk3399: Add Nanopi NEO4 board support
Add initial support for Nanopi NEO4 board.

Specification
- Rockchip RK3399
- 1GB DDR3-1866
- SD card slot
- eMMC Socket
- RTL8211E 1Gbps
- AP6212 WiFI/BT
- HDMI In/Out, DP, MIPI CSI
- USB 3.0, 2.0
- USB Type C power and data
- GPIO expansion ports
- DC 5V/3A

Commit details of rk3399-nanopi-neo4.dts sync from Linux:
"arm64: dts: rockchip: Add Nanopi NEO4 initial support"
(sha1: 092470b537f19788d957aed12d835a179b606014)

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2019-05-30 18:22:35 +08:00
Christoph Muellner
b238e4b00c rockchip: Cleanup of make_fit_atf.py.
This patch cleans up make_fit_atf.py in the following way:

* Fix all issues reported by pylint
* Move copyright notice from file-to-generate to script
* Fix of-by-one bugs in loadables property
* Remove commented-out (dead) code.

Besides the bugfix no intended changes.

Tested on RK3399-Q7 with TF-A v2.1 as BL31.

Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2019-05-30 18:22:35 +08:00
Christoph Muellner
78a1ac33cb rockchip: rk3399: Add option to print on UART3.
The RK3399 SPL does not use a pinctrl driver to setup the UART pins.
Instead it works based on config macros, which set the base address
of the actual UART block.

Currently the RK3399 SPL support UART0 and UART2.
This patch adds UART3 in the same way as UART0.

Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2019-05-30 18:22:35 +08:00
Christoph Muellner
dee5ad5ae7 rockchip: pinctrl: rk3399: Add support for UART3.
This patch adds the missing GRF bit definitions for UART3 on the RK3399.

Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2019-05-30 18:22:35 +08:00
Tom Rini
e2822ccc2c Merge branch 'master' of git://git.denx.de/u-boot-tegra
- Audio support
2019-05-29 07:28:40 -04:00
Bartosz Golaszewski
d7cc0e4d79 mcx: remove board
This board still doesn't select CONFIG_DM and seems to be umaintained.
As it makes progress on modernizing several DaVinci drivers more
difficult and the maintainer has not expressed interest in updating
it, this patch proposes to remove it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-05-28 13:58:06 -04:00
Bartosz Golaszewski
2aa20c43e4 twister: remove board
This board still doesn't select CONFIG_DM and seems to be umaintained.
As it makes progress on modernizing several DaVinci drivers more
difficult and the maintainer has not expressed interest in updating
it, this patch proposes to remove it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2019-05-28 13:58:06 -04:00
Bartosz Golaszewski
899dd71e9f mt_ventoux: remove board
This board still doesn't select CONFIG_DM and seems to be umaintained.
As it makes progress on modernizing several DaVinci drivers more
difficult and the maintainer has not expressed interest in updating
it, this patch proposes to remove it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2019-05-28 13:58:06 -04:00
Bartosz Golaszewski
8c2644ca69 cm_t3517: remove board
This board still doesn't select CONFIG_DM and seems to be umaintained.
As it makes progress on modernizing several DaVinci drivers more
difficult and the maintainer has not expressed interest in updating
it, this patch proposes to remove it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-05-28 13:58:06 -04:00
Bartosz Golaszewski
3b88579c64 ipam390: remove board
This board still doesn't select CONFIG_DM and seems to be umaintained.
As it makes progress on modernizing several DaVinci drivers more
difficult and the maintainer has not expressed interest in updating
it, this patch proposes to remove it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Heiko Schocher <hs@denx.de>
2019-05-28 13:58:06 -04:00
Bartosz Golaszewski
5e92c6856b eco5pk: remove board
This board still doesn't select CONFIG_DM and seems to be umaintained.
As it makes progress on modernizing several DaVinci drivers more
difficult and the maintainer has not expressed interest in updating
it, this patch proposes to remove it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-05-28 13:58:06 -04:00
Bartosz Golaszewski
7a2b51e36f ea20: remove board
This board still doesn't select CONFIG_DM and seems to be umaintained.
As it makes progress on modernizing several DaVinci drivers more
difficult and the maintainer has not expressed interest in updating
it, this patch proposes to remove it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2019-05-28 13:58:06 -04:00
Bartosz Golaszewski
881ae794b9 calimain: remove board
This board still doesn't select CONFIG_DM and seems to be umaintained.
As it makes progress on modernizing several DaVinci drivers more
difficult and the maintainer has not expressed interest in updating
it, this patch proposes to remove it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-05-28 13:58:06 -04:00
Tom Rini
c18b103657 Merge branch 'master' of git://git.denx.de/u-boot-sh
- Gen3 PCIe driver + enablement on Salvator-X platforms.
- Gen3 recovery SPL used to reload ATF/OpTee/U-Boot instead of minimon.
- SDHI HS400 fixes ported from latest BSP and datasheet.
2019-05-26 20:18:20 -04:00
Tom Rini
696f02d99b Merge branch 'master' of git://git.denx.de/u-boot-socfpga
- SoCFPGA PL310 cleanup + A10 fix, A10 DT cleanup, DW GPIO fix.
2019-05-26 20:15:46 -04:00
Simon Glass
c5a120b3f0 tegra: sound: Add an I2S driver
Add a driver which supports transmitting digital sound to an audio codec.
This uses fixed parameters as a device-tree binding is not currently
defined.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-05-24 10:14:03 -07:00
Simon Glass
112f2e1443 tegra: sound: Add an audio hub driver
Add a driver for the audio hub. This is modelled as a misc device which
supports writing audio data from I2S.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-05-24 10:13:52 -07:00
Simon Glass
c9d7542bf3 tegra: Add a delay in clock_start_periph_pll()
This function enables a peripheral clock and then immediately sets its
divider. Add a delay to allow the clock to settle first. This matches the
delay in other places which do a similar thing.

Without this, the I2S device on Nyan does not init properly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-05-24 10:13:44 -07:00
Simon Glass
f6ac3fab9b tegra: Correct tegra124 clock name
The first clock type appears to have and incorrect setting for out of the
mux outputs. It should be CLK_M, not OSC. Fix it and its only user.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2019-05-24 10:13:12 -07:00
Tien Fong Chee
ca9387e8b1 Arm: dts: socfpga: Remove invalid property from chose node
Finding bitstream from cff-file is no longer valid after bitstream is built
into FIT image and loaded by generic firmware loader. Remove cff-file
as this is legacy implementation from A10 downstream.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
2019-05-24 14:29:51 +02:00
Marek Vasut
476abb72e0 ARM: socfpga: Clear PL310 early in SPL
On SoCFPGA A10 systems, it can rarely happen that a reboot from Linux
will result in stale data in PL310 L2 cache controller. Even if the L2
cache controller is disabled via the CTRL register CTRL_EN bit, those
data can interfere with operation of devices using DMA, like e.g. the
DWMMC controller. This can in turn cause e.g. SPL to fail reading data
from SD/MMC.

The obvious solution here would be to fully reset the L2 cache controller
via the reset manager MPUMODRST L2 bit, however this causes bus hang even
if executed entirely from L1 I-cache to avoid generating any bus traffic
through the L2 cache controller.

This patch thus configures and enables the L2 cache controller very early
in the SPL boot process, clears the L2 cache and disables the L2 cache
controller again.

The reason for doing it in SPL is because we need to avoid accessing any
of the potentially stale data in the L2 cache, and we are certain any of
the stale data will be below the OCRAM address range. To further reduce
bus traffic during the L2 cache invalidation, we enable L1 I-cache and
run the invalidation code entirely out of the L1 I-cache.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
2019-05-24 00:01:08 +02:00