Errata doc: https://www.ti.com/lit/pdf/sprz457
Errata ID i2331 CPSW: Device lockup when reading CPSW registers
Details: A device lockup can occur during the second read of any CPSW
subsystem register after any MAIN domain power on reset (POR). A MAIN
domain POR occurs using the hardware MCU_PORz signal, or via software
using CTRLMMR_RST_CTRL.SW_MAIN_POR or CTRLMMR_MCU_RST_CTRL.SW_MAIN_POR.
After these resets, the processor and internal bus structures may get
into a state which is only recoverable with full device reset using
MCU_PORz.
Due to this errata, Ethernet boot should not be used on this device.
Workaround(s): To avoid the lockup, a warm reset should be issued after
a MAIN domain POR and before any access to the CPSW registers. The warm
reset realigns internal clocks and prevents the lockup from happening.
Workaround above errata by calling do_reset() in case of cold boot in
order to trigger warm reset. This needs enabling SYSRESET driver in R5
SPL to enable TI SCI reset driver.
Signed-off-by: Nitin Yadav <n-yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Makes it possible to use e.g mcu_spi0 for custom board detection.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
This matches how it was done for pre-K3 TI platforms and it allows
us to move the forward declaration out of sys_proto.h.
It also removes the need for K3_BOARD_DETECT as one is free to simply
override the weak function in their board files as needed.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
This header is only used locally by K3 init files, no need to have it
up with the global mach includes. Move into local includes.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
This function is the same for each device when it needs to shutdown
the R5 core. Move this to the common section and move the remaining
device specific ID list to the device hardware include.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
For non TI boards it is not possible to enable the do_board_detect()
call as TI_I2C_BOARD_DETECT is defined in board/ti/common/Kconfig.
I want to use do_board_detect() to dectect boards and properties based
on some SPI communication with a FPGA.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
These hardware register definitions are common for all K3, remove
duplicate data them by moving them to hardware.h.
While here do some minor whitespace cleanup + grouping.
Signed-off-by: Andrew Davis <afd@ti.com>
The content of these files are only used in SPL builds. The contents are
already ifdef for the same, remove that and only include the whole file
in the build when building for SPL.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Without this register unlock it is not possible to configure the
pinmux used for mcu spi0.
Fixes: 92e46092f2 ("arch: arm: mach-k3: am642_init: Probe ESM nodes")
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
On AM64x devices, it is possible to route Main ESM0 error events to MCU
ESM. MCU ESM high error output can trigger the reset logic to reset the
device. So, for these devices we expect two ESM device nodes in the
device tree, one for Main ESM and the another MCU ESM in the device tree.
When these ESM device nodes are properly configired it is possible to
route the Main RTI0 WWDT output to the MCU ESM high output through Main
ESM and trigger a device reset when
CTRLMMR_MCU_RST_CTRL:MCU_ESM_ERROR_RESET_EN_Z is set to '0'.
On K3 AM64x devices, the R5 SPL u-boot handles the ESM device node
configurations.
Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Platforms can overwrite the weak definition of spl_mmc_boot_mode() to
determine where to load U-Boot proper from.
For most of them this is a trivial decision based on Kconfig variables,
but it might be desirable the probe the actual device to answer this
question.
Pass the pointer to the mmc struct to that function, so implementations
can make use of that.
Compile-tested for all users changed.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Reviewed-by: Ley Foon Tan <ley.foon.tan@inte.com> (for SoCFPGA)
Acked-by: Lokesh Vutla <lokeshvutla@ti.com> (for OMAP and K3)
Reviewed-by: Simon Glass <sjg@chromium.org>
Currently only the PADCFG registers of the main domain are unlocked.
Also unlock PADCFG registers of MCU domain, so MCU pin muxing can be configured by u-boot or Linux.
Signed-off-by: Michael Liebert <liebert@ibv-augsburg.de>
Tested-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Acked-by: Nishanth Menon <nm@ti.com>
Function spl_boot_mode() is called in common/spl/spl_mmc.c, to find the
boot mode for a given boot device. This function was renamed to
spl_mmc_boot_mode() by commit e97590654a.
Therefore, rename spl_boot_mode to spl_mmc_boot_mode.
Fixes: 57dba04afb ("arm: mach-k3: am642: Add support for boot device detection")
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210726152807.22991-2-a-govindraju@ti.com
The `struct udevice *` reference is needed for either of the
K3_LOAD_SYSFW, K3_AM64_DDRSS config guards. Adding the missing
K3_AM64_DDRSS guard.
Signed-off-by: Gowtham Tammana <g-tammana@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210624171614.14244-1-g-tammana@ti.com
U-Boot either supports USB host or device mode for a node at a time in the
device tree nodes. To support both host and dfu bootmodes, dr_mode is set
to "peripheral" by default and then fixed based on the mode selected by
the boot mode config dip switches on the board.
This needs to happen before the cdns3 generic layer binds the usb device
to a host or a device driver. Therefore, use fdtdec_setup_board()
implementation to fixup the device tree property.
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210604163043.12811-4-a-govindraju@ti.com
This commit does the same thing as Linux commit 33def8498fdd.
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.
Remove the quote operator # from compiler_attributes.h __section macro.
Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Enable support for selecting DTB within SPL based on EEPROM.
This will help to use single defconfig for both EVM and SK
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
In SPL, DDR should be made available by the end of board_init_f()
so that apis in board_init_r() can use ddr. Adding support for
triggering DDR initialization from board_init_f().
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
The AM642 SoCs use the Main R5FSS0 as a boot processor, and runs
the R5 SPL that performs the initialization of the System Controller
processor and starting the Arm Trusted Firmware (ATF) on the Arm
Cortex A53 cluster. The Core0 serves as this boot processor and is
parked in WFE after all the initialization. Core1 does not directly
participate in the boot flow, and is simply parked in a WFI.
Power down these R5 cores (and the associated RTI timer resources
that were indirectly powered up) after starting up ATF on A53 by
using the appropriate SYSFW API in release_resources_for_core_shutdown().
This allows these Main R5F cores to be further controlled from the
A53 to run regular applications.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Use the System Firmware (SYSFW) loader framework to load and start
the SYSFW as part of the AM642 early initialization sequence. Also
make use of existing logic to detect if ROM has already loaded sysfw
and avoided attempting to reload and instead just prepare to use already
running firmware.
While at it also initialize the MAIN_UART1 pinmux as it is used by SYSFW
to print diagnostic messages.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
For AM642, ROM supports loading system firmware directly
from boot image. ROM passes information about the number of
images that are loaded to bootloader at a specific address
that is temporary. Add support for storing this information
somewhere permanent before it gets corrupted.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
To access various control MMR functionality the registers need to
be unlocked. Do that for all control MMR regions in the MAIN domain.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
AM642 allows for booting from primary or backup boot media.
Both media can be chosen individually based on switch settings.
ROM looks for a valid image in primary boot media, if not found
then looks in backup boot media. In order to pass this boot media
information to boot loader, ROM stores a value at a particular
address. Add support for reading this information and determining
the boot media correctly.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
The AM642 SoC belongs to the K3 Multicore SoC architecture platform,
providing advanced system integration to enable applications such as
Motor Drives, PLC, Remote IO and IoT Gateways.
Some highlights of this SoC are:
* Dual Cortex-A53s in a single cluster, two clusters of dual Cortex-R5F
MCUs, and a single Cortex-M4F.
* Two Gigabit Industrial Communication Subsystems (ICSSG).
* Integrated Ethernet switch supporting up to a total of two external
ports.
* PCIe-GEN2x1L, USB3/USB2, 2xCAN-FD, eMMC and SD, UFS, OSPI memory
controller, QSPI, I2C, eCAP/eQEP, ePWM, ADC, among other
peripherals.
* Centralized System Controller for Security, Power, and Resource
Management (DMSC).
See AM64X Technical Reference Manual (SPRUIM2, Nov 2020)
for further details: https://www.ti.com/lit/pdf/spruim2
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
