The register offset of i2c_sysc offset is not correct as per
omap5[1]/dra7[2] TRM, correct the offsets as per the
documentation.
[1] - http://www.ti.com/lit/pdf/swpu249
[2] - http://www.ti.com/lit/pdf/spruhz6
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
The register offset of i2c_sysc offset is not correct as per
omap4 TRM [1], correct the offsets as per the documentation.
[1] - http://www.ti.com/lit/ug/swpu235ab/swpu235ab.pdf
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
The ChromeOS kernel reads the RAM settings from PMU_SYS_REG2 and expects
the bootloader to store the necessary information there. We're using
the same register to pass the same information between the SPL and
U-Boot but in a slightly different format.
Change this to use the format expected by the Linux DMC driver so that
the system doesn't hang in Linux by misconfiguring the RAM.
This is almost the same as commit b5788dc ("rockchip: rk3288: correct
sdram setting") which was reverted in commit b525556 ("Revert "rockchip:
rk3288: correct sdram setting"") but parenthese have been added to apply
the mask correctly when reading the "bw" setting and a couple of minor
style issues have been fixed to keep check_patch.pl happy.
Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Simon Glass <sjg@chromium.org>
RK3399 is a SoC from Rockchip with dual-core Cortex-A72
and quad-core Cortex-A53 CPU. It supports two USB3.0
type-C ports and two USB2.0 EHCI ports. Other interfaces
are very much like RK3288, the DRAM are 32bit width address
and support address from 0 to 4GB-128MB range.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
These files are from kernel upstream:
"649a371 Add linux-next specific files for 20160616"
with some modification need by U-Boot:
- chosen with stdout-path to uart2.
- add clock-frequency for uart2
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
The current code picks the first available clock. In U-Boot proper this is
the oscillator device, not the SoC clock device. As a result the HDMI display
does not work.
Fix this by calling rockchip_get_clk() instead.
Fixes: 135aa950 (clk: convert API to match reset/mailbox style)
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
On Rockchip SoCs we typically have a main clock device that uses the Soc
clock driver. There is also a fixed clock for the oscillator. Add a function
to obtain the core clock.
Signed-off-by: Simon Glass <sjg@chromium.org>
The function is very specific to the rk3288 in its arguments
referencing the rk3288 cru and grf and every other rockchip soc
has differing cru and grf registers. So make that function naming
explicit.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Simon Glass <sjg@chromium.org>
Having some sort of ordering proofed helpful in a lot of other places
already. So for a larger number of rockchip socs it might be helpful
as well instead of an ever increasing unsorted list.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Acked-by: Simon Glass <sjg@chromium.org>
Enable fastboot feature on rk3288.
This path doesn't support the fastboot flash function command entirely.
We will hit "cannot find partition" assertion without specified
partition environment. Define gpt partition layout in specified board
such as firefly-rk3288, then enjoy it!
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
It conflicts with the generic_timer.
Cc: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Acked-by: Simon Glass <sjg@chromium.org>
In preparation for RK3368 and RK3399, which need to select ARM64, don't
select CPU_V7 at the ARCH_ROCKCHIP level but at the SoC level instead.
Cc: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Acked-by: Simon Glass <sjg@chromium.org>
The 'evb_rk3036' and 'kylin' is not a vendor name, let's replace them
to 'rockchip' which is a real _vendor_ name, and meet the architecure
'board/<vendor>/<board-name>/'.
More boards from rockchip like evb_rk3288, evb_rk3399 will comes later.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Eddie Cai <eddie.cai.kernel@gmail.com>
evb-3288 board RK3288-based development board with 2 USB ports, HDMI,
VGA, micro-SD card, audio, WiFi and Gigabit Ethernet. It also includes
on-board 8G eMMC and 2GB of SDRAM. Expansion connector provide access to
display pins, I2C, SPI, UART and GPIOs. This add some basic files
required to allow the board to output serial messaged and can run
command(mmc info etc).
evb-rk3288 also supports booting from eMMC or SD card, the default is eMMC.
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
If we would like to boot from SD card, we have to implement mmc driver
in SPL stage, and get a slightly large SPL binary. Rockchip SoC's
bootrom code has the ability to load spl and u-boot, then boot.
If CONFIG_ROCKCHIP_SPL_BACK_TO_BROM is enabled, the spl will return to
bootrom in board_init_f(), then bootrom loads u-boot binary.
Loading sequence after rework:
bootrom ==> spl ==> bootrom ==> u-boot
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
Fixed up spelling of U-Boot, boorom, opinion->option, Rochchip:
Signed-off-by: Simon Glass <sjg@chromium.org>
Without this, GCC uses the toolchain default, which may be incompatible
with -maltivec.
Signed-off-by: Scott Wood <oss@buserror.net>
Reviewed-by: York Sun <york.sun@nxp.com>
A couple of commits have modified the am33xx/am437x ddr2/ddr3
initialization path to fix certain issues, but have had the side effect
of causing L3 noc errors during initialization. The two commits are:
69b918 "am33xx,ddr3: fix ddr3 sdram configuration"
fc46ba "arm: am437x: Enable hardware leveling for EMIF"
The EMIF_REG_INITREF_DIS_MASK bit still needs to be set for all
platforms. This delays initialization and refresh until a later stage.
The 500us timer can be programmed for platforms that require it
and for platforms that don't require it. It is currently hardcoded
for 400MHz systems. For systems with a higher memory frequency
this needs to be a larger value, and for systems with a lower
memory frequency this can be a lower value. This can be
considered a separate issue and corrected in a later commit.
Signed-off-by: Russ Dill <Russ.Dill@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
The delay needs to be before the write to ref_ctrl register
which initiates refreshes. An improper initialization sequence
generates an L3 noc error.
Signed-off-by: Russ Dill <Russ.Dill@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
commit 1f807a9f32 ("ARM: keystone2: Refactor MSMC macros to avoid
left under a macro KS2_MSMC_SEGMENT_QM_PDSP which is no longer valid.
This, in effect disabled DMA coherency for QM PDSP.
Given that msmc_k2hkle_common_setup is valid for all K2H/K/L/E SoCs,
the #ifdef should been removed in the first place. Do the same.
Fixes: 1f807a9f32 ("ARM: keystone2: Refactor MSMC macros to avoid #ifdeffery")
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Enable the NAND controller in the sun5i-r8-chip.dts.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Add the NAND controller definition to sun5i.dtsi.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
We need some macros to manipulate the NAND controller clock.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Deassert resets and enable clock signals of xHCI blocks if the
corresponding CONFIG is enabled.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
I need to add more board attributes, so the "flags" member will be
handier than separate boolean ones.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Sync register macros with Linux code. This will be helpful to
develop the counterpart of Linux.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This does not have much impact on behavior, but makes code look more
more like Linux. The use of devm_ioremap() often helps to delete
.remove callbacks entirely.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
On these two boards, the serial0 is used for inter-chip connection,
so cannot be used for login console. The serial2 is used instead
for them, but it is tedious to use because upper level deployment
projects must switch login console per board.
[ Linux commit: 2a4a2aadbaad9dffdb564a2895348f3d8e825416 ]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Commit 17c2987 introduces an undesired dependency on CONFIG_SPL_LOAD_FIT
when building U-Boot for AM57xx and DRA7xx high-security (HS) devices that
causes the build to break when that option is not active. Fix this issue
by only building the u-boot_HS.img target when building U-Boot into an
actual FIT image.
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Commit e29878f introduces an undesired dependency on CONFIG_SPL_LOAD_FIT
when building U-Boot for AM43xx high-security (HS) devices that causes the
build to break when that option is not active. Fix this issue by only
building the u-boot_HS.img target when building U-Boot into an actual
FIT image.
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
As part of the startup process for boards using the SPL, the
meaning of board_init_f changed such that it should return normally
rather than calling board_init_r directly. (see
db910353a1 )
This was fixed in 32-bit arm, but broke when SPL was added to
64 bit arm. This fixes crt0_64 so that it calls board_init_r
during the SPL and removes the direct call from board_init_f
from the arm SPL example.
Signed-off-by: Jeremy Hunt <Jeremy.Hunt@DEShawResearch.com>
Acked-by: Simon Glass <sjg@chromium.org>
identify_nand_chip hangs forever in loop when NAND is not present.
As IGEPv2 comes either with NAND or OneNAND flash, add reset timeout
to let function fail gracefully allowing caller to know NAND is
not present. On NAND equipped board, reset succeeds on first read,
so 1000 loops seems to be safe timeout.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Other payload than uImage is currently considered to be raw U-Boot
image. Check also for zImage in Falcon mode.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Make code 64bit aware.
Warnings:
+../arch/arm/lib/spl.c: In function ‘jump_to_image_linux’:
+../arch/arm/lib/spl.c:63:3: warning: cast to pointer from integer of
different size [-Wint-to-pointer-cast]
+../common/spl/spl_fat.c: In function ‘spl_load_image_fat’:
+../common/spl/spl_fat.c:91:33: warning: cast to pointer from integer
of different size [-Wint-to-pointer-cast]
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Per Vikas' request, the problem this commit is supposed to be solving is
something he doesn't see and further this introduces additional hardware
requirements.
This reverts commit 4b2fd720a7.
Signed-off-by: Tom Rini <trini@konsulko.com>
For mpc85xx SoCs, the core begins execution from address 0xFFFFFFFC.
In non-secure boot scenario from NAND, this address will map to CPC
configured as SRAM. But in case of secure boot, this default address
always maps to IBR (Internal Boot ROM).
The IBR code requires that the bootloader(U-boot) must lie in 0 to 3.5G
address space i.e. 0x0 - 0xDFFFFFFF.
For secure boot target from NAND, the text base for SPL is kept same as
non-secure boot target i.e. 0xFFFx_xxxx but the SPL U-boot binary will
be copied to CPC configured as SRAM with address in 0-3.5G(0xBFFC_0000)
As a the virtual and physical address of CPC would be different. The
virtual address 0xFFFx_xxxx needs to be mapped to physical address
0xBFFx_xxxx.
Create a new PBI file to configure CPC as SRAM with address 0xBFFC0000
and update DCFG SCRTACH1 register with location of Header required for
secure boot.
The changes are similar to
commit 467a40dfe3
powerpc/mpc85xx: SECURE BOOT- NAND secure boot target for P3041
While P3041 has a 1MB CPC and does not require SPL. On T104x, CPC
is only 256K and thus SPL framework is used.
The changes are only applicable for SPL U-Boot running out of CPC SRAM
and not the next level U-Boot loaded on DDR.
Reviewed-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com>
Signed-off-by: Sumit Garg <sumit.garg@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
As part of Chain of Trust for Secure boot, the SPL U-Boot will validate
the next level U-boot image. Add a new function spl_validate_uboot to
perform the validation.
Enable hardware crypto operations in SPL using SEC block.
In case of Secure Boot, PAMU is not bypassed. For allowing SEC block
access to CPC configured as SRAM, configure PAMU.
Reviewed-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com>
Signed-off-by: Sumit Garg <sumit.garg@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: York Sun <york.sun@nxp.com>
On Tegra186, U-Boot is booted by the binary firmware as if it were a
Linux kernel. Consequently, a DTB is passed to U-Boot. Cache the address
of that DTB, and parse the /memory/reg property to determine the actual
RAM regions that U-Boot and subsequent EL2/EL1 SW may actually use.
Given the binary FW passes a DTB to U-Boot, I anticipate the suggestion
that U-Boot use that DTB as its control DTB. I don't believe that would
work well, so I do not plan to put any effort into this. By default the
FW-supplied DTB is the L4T kernel's DTB, which uses non-upstreamed DT
bindings. U-Boot aims to use only upstreamed DT bindings, or as close as
it can get. Replacing this DTB with a DTB using upstream bindings is
physically quite easy; simply replace the content of one of the GPT
partitions on the eMMC. However, the binary FW at least partially relies
on the existence/content of some nodes in the DTB, and that requires the
DTB to be written according to downstream bindings. Equally, if U-Boot
continues to use appended DTBs built from its own source tree, as it does
for all other Tegra platforms, development and deployment is much easier.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Implement a hook to allow boards to save boot-time CPU state for later
use. When U-Boot is chain-loaded by another bootloader, CPU registers may
contain useful information such as system configuration information. This
feature mirrors the equivalent ARMv7 feature.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
IVC (Inter-VM Communication) protocol is a Tegra-specific IPC (Inter
Processor Communication) framework. Within the context of U-Boot, it is
typically used for communication between the main CPU and various
auxiliary processors. In particular, it will be used to communicate with
the BPMP (Boot and Power Management Processor) on Tegra186 in order to
manipulate clocks and reset signals.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Many files in arch/arm/mach-tegra are compiled conditionally based on
Kconfig variables, or applicable to all platforms. We can let the main
Tegra Makefile handle compiling (or not) those files to avoid each SoC-
specific Makefile needing to duplicate entries for those files. This
leaves the SoC-specific Makefiles to compile truly SoC-specific code.
In the future, we'll hopefully add Kconfig variables for all the other
files, and refactor those files, and so reduce the need for SoC-specific
Makefiles and/or ifdefs in the Makefiles.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
There are multiple versions of p2771-0000 board. There are SW visible
incompatible differences between the versions, and they are relevant to
U-Boot. Create separate "A02" and "B00" defconfigs (named after the first
and/or only board rev the defconfig supports) so that users can select
which build they want.
With the minimal set of HW currently enabled in U-Boot, the differences
are irrelevant, hence the DT files aren't different. However, that will
change in a future patch.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Tegra186 uses different GPIO port IDs compared to previous chips. Make
sure the SoC DT file includes the correct GPIO binding header.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Commit c1ebf54868 ("imx_common: Return MMCSD_MODE_FS in spl_boot_mode()
also for EXTFS") causes SPL breakage on wandboard:
ERROR: v7_dcache_inval_range - start address is not aligned - 0x1820006c
ERROR: v7_dcache_inval_range - stop address is not aligned - 0x1820086c
ERROR: v7_dcache_inval_range - start address is not aligned - 0x1820006c
ERROR: v7_dcache_inval_range - stop address is not aligned - 0x1820086c
** First descriptor is NOT a primary desc on 0:1 **
spl: no partition table found
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###
This error is seen when SPL and u-boot.img are stored in the raw SD card
partition.
This reverts commit c1ebf54868.
Signed-off-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
According to the IMX6DQRM Reference Manual, the description
of bit 7 (axi_alt_sel) of the CCM_CBCDR register is:
"AXI alternative clock select
0 pll2 396MHz PFD will be selected as alternative clock for AXI root clock
1 pll3 540MHz PFD will be selected as alternative clock for AXI root clock "
The current logic is inverted, so fix it to match the reference manual.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Set the enable-method in the cpu node to PSCI, and create device
node for PSCI, when PSCI was enabled.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
If the PSCI and PPA is ready, skip the fixup for spin-table and
waking secondary cores. Otherwise, change SMP method to spin-table,
and the device node of PSCI will be removed.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
The FSL Primary Protected Application (PPA) is a software component
loaded during boot which runs in TrustZone and remains resident
after boot.
Use the secure firmware framework to integrate FSL PPA into U-Boot.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This framework is introduced for ARMv8 secure monitor mode firmware.
The main functions of the framework are, on EL3, verify the firmware,
load it to the secure memory and jump into it, and while it returned
to U-Boot, do some necessary setups at the 'target exception level'
that is determined by the respective secure firmware.
So far, the framework support only FIT format image, and need to define
the name of which config node should be used in 'configurations' and
the name of property for the raw secure firmware image in that config.
The FIT image should be stored in Byte accessing memory, such as NOR
Flash, or else it should be copied to main memory to use this framework.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This function assume that the d-cache and MMU has been enabled earlier,
so it just created MMU table in main memory. But the assumption is not
always correct, for example, the early setup is done in EL3, while
enable_caches() is called when the PE has turned into another EL.
Define the function mmu_setup() for fsl-layerscape to cover the weak
one.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Drop platform code to create static MMU tables. Use common framework
to create MMU tables on the run. Tested on LS2080ARDB with secure and
non-secure ram scenarios.
Signed-off-by: York Sun <york.sun@nxp.com>
Use existing Kconfig symbols to let the user configure whether to
build a U-Boot with non-secure mode support or not. This also allows
to enable virtualization extension easily.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
This can be useful if the same U-Boot binary is used for boards
available with a i.MX 7Solo and i.MX 7Dual.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Introduce virtual and physical addresses in the mapping table. This change
have no impact on existing boards because they all use idential mapping.
Signed-off-by: York Sun <york.sun@nxp.com>
When page tables are created, allow later table to be created on
previous block entry. Splitting block feature is already working
with current code. This patch only rearranges the code order and
adds one condition to call split_block().
Signed-off-by: York Sun <york.sun@nxp.com>
Make setup_pgtages() and get_tcr() available for platform code to
customize MMU tables.
Remove unintentional call of create_table().
Signed-off-by: York Sun <york.sun@nxp.com>
When secure ram is used, MMU tables have to be put into secure ram.
To use common MMU code, gd->arch.tlb_addr will be used to host TLB
entry pointer. To save allocated memory for later use, tlb_allocated
variable is added to global data structure.
Signed-off-by: York Sun <york.sun@nxp.com>
Secure_ram variable was put in generic global data. But only ARMv8
uses this variable. Move it to ARM specific data structure.
Signed-off-by: York Sun <york.sun@nxp.com>
Now that we have a secure data section for storing variables, there
should be no need for platform code to get the stack address.
Make psci_get_cpu_stack_top a local function, as it should only be
used in armv7/psci.S and only by psci_stack_setup.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Now that we have a secure data section and space to store per-CPU target
PC address, switch to it instead of storing the target PC on the stack.
Also save clobbered r4-r7 registers on the stack and restore them on
return in psci_cpu_on for Tegra, i.MX7, and LS102xA platforms.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Now that we have a data section, add helper functions to save and fetch
per-CPU target PC.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
The secure monitor may need to store global or static values within the
secure section of memory, such as target PC or CPU power status.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi and i.mx7 both define the __secure modifier to put functions in
the secure section. Move this to a common place.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
As the PSCI implementation grows, we might exceed the size of the secure
memory that holds the firmware.
Add a configurable CONFIG_ARMV7_SECURE_MAX_SIZE so platforms can define
how much secure memory is available. The linker then checks the size of
the whole secure section against this.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
psci_text_end was used to calculate the PSCI stack address following the
secure monitor text. Now that we have an explicit secure stack section,
this is no longer used.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Now that we have a secure stack section that guarantees usable memory,
allocate the PSCI stacks in that section.
Also add a diagram detailing how the stacks are placed in memory.
Reserved space for the target PC remains unchanged. This should be
moved to global variables within a secure data section in the future.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Until now we've been using memory beyond psci_text_end as stack space
for the secure monitor or PSCI implementation, even if space was not
allocated for it.
This was partially fixed in ("ARM: allocate extra space for PSCI stack
in secure section during link phase"). However, calculating stack space
from psci_text_end in one place, while allocating the space in another
is error prone.
This patch adds a separate empty secure stack section, with space for
CONFIG_ARMV7_PSCI_NR_CPUS stacks, each 1 KB. There's also
__secure_stack_start and __secure_stack_end symbols. The linker script
handles calculating the correct VMAs for the stack section. For
platforms that relocate/copy the secure monitor before using it, the
space is not allocated in the executable, saving space.
For platforms that do not define CONFIG_ARMV7_PSCI_NR_CPUS, a whole page
of stack space for 4 CPUs is allocated, matching the previous behavior.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Targets that define CONFIG_ARMV7_SECURE_BASE will copy the secure section
to another address before execution.
Since the secure section in the u-boot image is only storage, there's
no reason to page align it and increase the binary image size.
Page align the secure section only when CONFIG_ARMV7_SECURE_BASE is not
defined. And instead of just aligning the __secure_start symbol, align
the whole .__secure_start section. This also makes the section empty,
so we need to add KEEP() to the input entry to prevent the section from
being garbage collected.
Also use ld constant "COMMONPAGESIZE" instead of hardcoded page size.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This patch finishes the rewrite of sunxi specific PSCI parts into C
code.
The assembly-only stack setup code has been factored out into a common
function for ARMv7. The GIC setup code can be renamed as psci_arch_init.
And we can use an empty stub function for psci_text_end.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Every platform has the same stack setup code in assembly as part of
psci_arch_init.
Move this out into a common separate function, psci_stack_setup, for
all platforms. This will allow us to move the remaining parts of
psci_arch_init into C code, or drop it entirely.
Also provide a stub no-op psci_arch_init for platforms that don't need
their own specific setup code.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
The Orange Pi Lite SBC is a small H3 based SBC, with 512MB RAM,
micro-sd slot, HDMI out, 2 USB-A connectors, 1 micro-USB connector,
sdio attached rtl8189ftv wifi and an ir receiver.
The dts file is identical to the one submitted to the upstream kernel.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This enables extra USB controllers which enable use of the 3rd USB
port on the new Orange Pi Plus 2E variant.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Now that we know that the BROM stores a value indicating the boot-source
at the beginning of SRAM, use that instead of trying to recreate the
BROM's boot probing.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This patch add EMAC driver support for H3/A83T/A64 SoCs.
Tested on Pine64(A64-External PHY) and Orangepipc(H3-Internal PHY).
BIG Thanks to Andre for providing some of the DT code.
Signed-off-by: Amit Singh Tomar <amittomer25@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
The patch converts one of the "reserved" fields in the sunxi SPL
header to a fel_uEnv_length entry. When booting over USB ("FEL
mode"), this enables the sunxi-fel utility to pass the string
length of uEnv.txt compatible data; at the same time requesting
that this data be imported into the U-Boot environment.
If parse_spl_header() in the sunxi board.c encounters a non-zero
value in this header field, it will therefore call himport_r() to
merge the string (lines) passed via FEL into the default settings.
Environment vars can be changed this way even before U-Boot will
attempt to autoboot - specifically, this also allows overriding
"bootcmd".
With fel_script_addr set and a zero fel_uEnv_length, U-Boot is
safe to assume that data in .scr format (a mkimage-type script)
was passed at fel_script_addr, and will handle it using the
existing mechanism ("bootcmd_fel").
Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de>
Acked-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Allwinner devices support SPI flash as one of the possible
bootable media type. The SPI flash chip needs to be connected
to SPI0 pins (port C) to make this work. More information is
available at:
https://linux-sunxi.org/Bootable_SPI_flash
This patch adds the initial support for booting from SPI flash.
The existing SPI frameworks are not used in order to reduce the
SPL code size. Right now the SPL size grows by ~370 bytes when
CONFIG_SPL_SPI_SUNXI option is enabled.
While there are no popular Allwinner devices with SPI flash at
the moment, testing can be done using a SPI flash module (it
can be bought for ~2$ on ebay) and jumper wires with the boards,
which expose relevant pins on the expansion header. The SPI flash
chips themselves are very cheap (some prices are even listed as
low as 4 cents) and should not cost much if somebody decides to
design a development board with an SPI flash chip soldered on
the PCB.
Another nice feature of the SPI flash is that it can be safely
accessed in a device-independent way (since we know that the
boot ROM is already probing these pins during the boot time).
And if, for example, Olimex boards opted to use SPI flash instead
of EEPROM, then they would have been able to have U-Boot installed
in the SPI flash now and boot the rest of the system from the SATA
hard drive. Hopefully we may see new interesting Allwinner based
development boards in the future, now that the software support
for the SPI flash is in a better shape :-)
Testing can be done by enabling the CONFIG_SPL_SPI_SUNXI option
in a board defconfig, then building U-Boot and finally flashing
the resulting u-boot-sunxi-with-spl.bin binary over USB OTG with
a help of the sunxi-fel tool:
sunxi-fel spiflash-write 0 u-boot-sunxi-with-spl.bin
The device needs to be switched into FEL (USB recovery) mode first.
The most suitable boards for testing are Orange Pi PC and Pine64.
Because these boards are cheap, have no built-in NAND/eMMC and
expose SPI0 pins on the Raspberry Pi compatible expansion header.
The A13-OLinuXino-Micro board also can be used.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Add support for of-platdata with rk3288 SDRAM initr. This requires decoding
the of-platdata struct and setting up the device from that. Also the driver
needs to be renamed to match the string that of-platdata will search for.
The platform data is copied from the of-platdata structure to the one used
by the driver. This allows the same code to be used with device tree and
of-platdata.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is more correct to avoid touching the device tree in the probe() method.
Update the driver to work this way. Note that only SPL needs to fiddle with
the SDRAM registers, so decoding the platform data fully is not necessary in
U-Boot proper.
Signed-off-by: Simon Glass <sjg@chromium.org>
The syscon devices all end up having diffent driver names with of-platdata,
since the driver name comes from the first string in the compatible list.
Add separate device declarations for each one, and add a bind method to set
up driver_data correctly.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add an extra byte so that this data is not byteswapped. Add a comment to
the code to explain the purpose.
Signed-off-by: Simon Glass <sjg@chromium.org>
Start up the test devices. These print out of-platdata contents, providing a
check that the of-platdata feature is working correctly.
The device-tree changes are made to sandbox.dts rather than test.dts. since
the former controls the of-platdata generation.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to be able to build SPL for sandbox. It provides additional
build coverage and allows SPL features to be tested in sandbox. However
it does not need worthwhile to always create an SPL build. It nearly
doubles the build time and the feature is (so far) seldom used.
So for now, create a separate build target for sandbox SPL. This allows
experimentation with this new feature without impacting existing workflows.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add an sandbox implementation for the generic SPL framework. This supports
locating and running U-Boot proper.
Signed-off-by: Simon Glass <sjg@chromium.org>
When building an SPL image, override the link flags so that it uses the
system libraries. This is similar to the way the non-SPL image is built.
Signed-off-by: Simon Glass <sjg@chromium.org>
SPL is expected to load and run U-Boot. This needs to work with sandbox also.
Provide a function to locate the U-Boot image, and another to start it. This
allows SPL to function on sandbox as it does on other archs.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present armv7 will unhappily invalidate a cache region and print an
error message. Make it skip the operation instead, as it does with other
cache operations.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
Errata i727 is applicable on all OMAP5 and DRA7 variants but enabled only
on OMAP5 ES1.0. So, enable it on all platforms.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This change is to remove a halt at about 200KiB
while sending a large(1MiB) binary to a micro controller using USART1.
USART1 is connected to a PC via an on-board ST-Link debugger
that also functions as a USB-Serial converter.
However, it seems to loss some data occasionally.
So I changed the serial port to USART6 and connected it to the PC using
an FTDI USB-Serial cable, therefore the transmission was successfully
completed.
Signed-off-by: Toshifumi NISHINAGA <tnishinaga.dev@gmail.com>
This patch adds SDRAM support for stm32f746 discovery board.
This patch depends on previous patch.
This patch is based on STM32F4 and emcraft's[1].
[1]: https://github.com/EmcraftSystems/u-boot
Signed-off-by: Toshifumi NISHINAGA <tnishinaga.dev@gmail.com>
This patch adds 200MHz clock configuration for stm32f746 discovery board.
This patch is based on STM32F4 and emcraft's[1].
[1]: https://github.com/EmcraftSystems/u-boot
Signed-off-by: Toshifumi NISHINAGA <tnishinaga.dev@gmail.com>
At present sandbox exits when the 'bootm' command completes, since it is not
actually able to run the OS that is loaded. Normally 'bootm' failure is
considered a fatal error in U-Boot.
However this is annoying for tests, which may want to examine the state
after a test is complete. In any case there is a 'reset' command which can
be used to exit, if required.
Change the behaviour to return normally from the 'bootm' command on sandbox.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Teddy Reed <teddy.reed@gmail.com>
For most of architectures in U-Boot, virtual address is straight
mapped to physical address. So, it makes sense to have generic
defines of ioremap and friends in <linux/io.h>.
All of them are just empty and will disappear at compile time, but
they will be helpful to implement drivers which are counterparts of
Linux ones.
I notice MIPS already has its own implementation, so I added a
Kconfig symbol CONFIG_HAVE_ARCH_IOREMAP which MIPS (and maybe
Sandbox as well) can select.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
These defines are valid only when iomem_valid_addr is defined,
but I do not see such defines anywhere. Remove.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Currently, this is only defined in arch/arm/include/asm/types.h,
so move it to include/linux/types.h to make it available for all
architectures.
I defined it with phys_addr_t as Linux does. I needed to surround
the define with #ifdef __KERNEL__ ... #endif to avoid build errors
in tools building. (Host tools should not include <linux/types.h>
in the first place, but this is already messy in U-Boot...)
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Modify the SPL build procedure for AM437x high-security (HS) device
variants to create a secure u-boot_HS.img FIT blob that contains U-Boot
and DTB artifacts signed (and optionally encrypted) with a TI-specific
process based on the CONFIG_TI_SECURE_DEVICE config option and the
externally-provided image signing tool.
Also populate the corresponding FIT image post processing call to be
performed during SPL runtime.
Signed-off-by: Madan Srinivas <madans@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Modify the SPL build procedure for AM57xx and DRA7xx high-security (HS)
device variants to create a secure u-boot_HS.img FIT blob that contains
U-Boot and DTB artifacts signed with a TI-specific process based on the
CONFIG_TI_SECURE_DEVICE config option and the externally-provided image
signing tool.
Also populate the corresponding FIT image post processing call to be
performed during SPL runtime.
Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Adds commands so that when a secure device is in use and the SPL is
built to load a FIT image (with combined U-Boot binary and various
DTBs), these components that get fed into the FIT are all processed to
be signed/encrypted/etc. as per the operations performed by the
secure-binary-image.sh script of the TI SECDEV package. Furthermore,
perform minor comments cleanup to make better use of the available
space.
Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Adds an API that verifies a signature attached to an image (binary
blob). This API is basically a entry to a secure ROM service provided by
the device and accessed via an SMC call, using a particular calling
convention.
Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Adds a generic C-callable API for making secure ROM calls on OMAP and
OMAP-compatible devices. This API provides the important function of
flushing the ROM call arguments to memory from the cache, so that the
secure world will have a coherent view of those arguments. Then is
simply calls the omap_smc_sec routine.
Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Add an interface for calling secure ROM APIs across a range of OMAP and
OMAP compatible high-security (HS) device variants. While at it, also
perform minor cleanup/alignment without any change in functionality.
Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Adds missing flush_dcache_range and invalidate_dcache_range dummy
(empty) placeholder functions to the #else portion of the #ifndef
CONFIG_SYS_DCACHE_OFF, where full implementations of these functions
are defined.
Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
There are two enable methods supported by ARM64 Linux; psci and
spin-table. The latter is simpler and helpful for quick SoC bring
up. My main motivation for this patch is to improve the spin-table
support, which allows us to boot an ARMv8 system without the ARM
Trusted Firmware.
Currently, we have multi-entry code in arch/arm/cpu/armv8/start.S
and the spin-table is supported in a really ad-hoc way, and I see
some problems:
- We must hard-code CPU_RELEASE_ADDR so that it matches the
"cpu-release-addr" property in the DT that comes from the
kernel tree.
- The Documentation/arm64/booting.txt in Linux requires that
the release address must be zero-initialized, but it is not
cared by the common code in U-Boot. We must do it in a board
function.
- There is no systematic way to protect the spin-table code from
the kernel. We are supposed to do it in a board specific manner,
but it is difficult to predict where the spin-table code will be
located after the relocation. So, it also makes difficult to
hard-code /memreserve/ in the DT of the kernel.
So, here is a patch to solve those problems; the DT is run-time
modified to reserve the spin-table code (+ cpu-release-addr).
Also, the "cpu-release-addr" property is set to an appropriate
address after the relocation, which means we no longer need the
hard-coded CPU_RELEASE_ADDR.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Upon further review this breaks most other platforms as we need to check
what core we're running on before touching it at all.
This reverts commit d73718f323.
Signed-off-by: Tom Rini <trini@konsulko.com>
if we build for an i.mx6 (d)ual(l)ite CONFIC_MX6DL we shall use
MX6DL_PAD instead the common MX6_PAD.
Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
MX7_SEC is an existing configuration option that allows booting the
kernel in secure mode.
Place this option in Kconfig, so that boards can select this option
in their defconfig files.
Selecting this option is necessary when booting a kernel provided by
NXP, such as 3.14_GA and 4.1.15_GA.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Tested-by: Michael Trimarchi <michael@amarulasolutions.com>
Custom Board based on MX6 Dual, 1GB RAM and eMMC.
There are two variants of the board with and without
PCIe (ZC5202 and ZC5601).
Signed-off-by: Stefano Babic <sbabic@denx.de>
spl_boot_mode() returned MMCSD_MODE_RAW on MMC if CONFIG_SPL_EXT_SUPPORT
was configured. EXTFS is the default filesystem selected in imx6_spl.h
and the function should return MMCSD_MODE_FS instead.
Fix this and return MMCSD_MODE_FS instead in such cases.
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
CC: Stefano Babic <sbabic@denx.de>
CC: Tim Harvey <tharvey@gateworks.com>
CC: Fabio Estevam <Fabio.Estevam@freescale.com>
With the change to set up pinctrl after relocation, link fails to boot. Add
a special case in the link code to handle this.
Fixes: d8906c1f (x86: Probe pinctrl driver in cpu_init_r())
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Add support for Advantech SOM-DB5800 with the SOM-6867 installed.
This is very similar to conga-qeval20-qa3-e3845 in that there is a
reference carrier board (SOM-DB5800) with a Baytrail based SoM (SOM-6867)
installed.
Currently supported:
- 2x UART (From ITE EC on SOM-6867) routed to COM3/4 connectors on
SOM-DB5800.
- 4x USB 2.0 (EHCI)
- Video
- SATA
- Ethernet
- PCIe
- Realtek ALC892 HD Audio
Pad configuration for HDA_RSTB, HDA_SYNC, HDA_CLK, HDA_SDO
HDA_SDI0 is set in DT to enable HD Audio codec.
Pin defaults for codec pin complexs are not changed.
Not supported:
- Winbond Super I/O (Must be disabled with jumpers on SOM-DB8500)
- USB 3.0 (XHCI)
- TPM
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
If global NVS says internal UART is not enabled, hide it in the ASL
code so that OS won't see it.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Now that platform-specific ACPI global NVS is added, pack it into
ACPI table and get its address fixed up.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This introduces quark-specific ACPI global NVS structure, defined in
both C header file and ASL file.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This introduces baytrail-specific ACPI global NVS structure, defined in
both C header file and ASL file.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
For any FSP-enabled boards that want to enable debug UART support,
setup_internal_uart() will be called, but this API is only available
on BayTrail platform. Change to wrap it with CONFIG_INTERNAL_UART.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
There are quite a number of BayTrail boards that uses an external
SuperIO chipset to provide the legacy UART. For such cases, it's
better to have a Kconfig option to enable the internal UART.
So far BayleyBay and MinnowMax boards are using internal UART as
the U-Boot console, enable this on these two boards.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This function have maintained for supporting Non-FDT.
Now, Almost all SoC are changed to fdt style.
So there are no that this function is called anywhere.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
It's correct to use '/' as prefix for aliases nodes.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
We have drivers for several more devices now, so drop the strings which are
no-longer used.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Define a platform data structure for the MPC85XX GPIO driver to allow
use of the driver without device tree. Users should define the GPIO
blocks for their platform like this:
struct mpc85xx_gpio_plat gpio_blocks[] = {
{
.addr = 0x130000,
.ngpios = 32,
},
{
.addr = 0x131000,
.ngpios = 32,
},
};
U_BOOT_DEVICES(my_platform_gpios) = {
{ "gpio_mpc85xx", &gpio_blocks[0] },
{ "gpio_mpc85xx", &gpio_blocks[1] },
};
This is intended to build upon the recent submission of the base
MPC85XX driver from Mario Six. We need to use that new driver
without dts support and this patch gives us that flexibility.
This has been tested on a Freescale T2080 CPU, although only the first
GPIO block.
Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Reviewed-by: Mario Six <mario.six@gdsys.cc>
Tested-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Simon Glass <sjg@chromium.org>
