Make the schedule() call from the CYCLIC framework a uthread scheduling
point too. This makes sense since schedule() is called from a lot of
places where uthread_schedule() needs to be called.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Add struct uthread_mutex and uthread_mutex_lock(),
uthread_mutex_trylock(), uthread_mutex_unlock() to protect shared data
structures from concurrent modifications.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Add a new internal API called uthread (Kconfig symbol: UTHREAD) which
provides cooperative multi-tasking. The goal is to be able to improve
the performance of some parts of U-Boot by overlapping lengthy
operations, and also implement background jobs in the U-Boot shell.
Each uthread has its own stack allocated on the heap. The default stack
size is defined by the UTHREAD_STACK_SIZE symbol and is used when
uthread_create() receives zero for the stack_sz argument.
The implementation is based on context-switching via initjmp()/setjmp()/
longjmp() and is inspired from barebox threads [1]. A notion of thread
group helps with dependencies, such as when a thread needs to block
until a number of other threads have returned.
The name "uthread" comes from "user-space threads" because the
scheduling happens with no help from a higher privileged mode, contrary
to more complex models where kernel threads are defined. But the 'u'
may as well stand for 'U-Boot' since the bootloader may actually be
running at any privilege level and the notion of user vs. kernel may
not make much sense in this context.
[1] https://github.com/barebox/barebox/blob/master/common/bthread.c
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Test the initjmp() function when HAVE_INITJMP is set. Use the test as an
example in the API documentation.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Add initjm[() to sandbox, a non-standard extension to setjmp()/
longjmp() allowing to initialize a jump buffer with a function pointer
and a stack pointer. This will be useful to later introduce threads.
With this new function it becomes possible to longjmp() to a particular
function pointer (rather than to a point previously reached during
program execution as is the case with setjmp()), and with a custom stack.
Both things are needed to spin off a new thread. Then the usual
setjmp()/longjmp() pair is enough to save and restore a context, i.e.,
switch thread. The implementation is taken verbatim from barebox [1] with
the exception of the additional stack_sz argument. It is quite complex
because contrary to U-Boot platform code we don't know how the system's
C library implements the jump buffer, so we can't just write the function
and stack pointers into it.
[1] https://github.com/barebox/barebox/blob/b2a15c383ddc/arch/sandbox/os/setjmp.c
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Implement initjmp() for RISC-V, a non-standard extension to setjmp()/
longjmp() allowing to initialize a jump buffer with a function pointer
and a stack pointer. This will be useful to later introduce threads.
With this new function it becomes possible to longjmp() to a particular
function pointer (rather than to a point previously reached during
program execution as is the case with setjmp()), and with a custom stack.
Both things are needed to spin off a new thread. Then the usual
setjmp()/longjmp() pair is enough to save and restore a context, i.e.,
switch thread.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Implement initjmp() for Arm. a non-standard extension to setjmp()/
longjmp() allowing to initialize a jump buffer with a function pointer
and a stack pointer. This will be useful to later introduce threads.
With this new function it becomes possible to longjmp() to a particular
function pointer (rather than to a point previously reached during
program execution as is the case with setjmp()), and with a custom stack.
Both things are needed to spin off a new thread. Then the usual
setjmp()/longjmp() pair is enough to save and restore a context, i.e.,
switch thread.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Add the HAVE_INIJMP symbol to be set by architectures that support
initjmp(), a non-standard extension to setjmp()/longjmp() allowing to
initialize a jump buffer with a function pointer and a stack pointer.
This will be useful to later introduce threads. With this new function
it becomes possible to longjmp() to a particular function pointer
(rather than to a point previously reached during program execution as
is the case with setjmp()), and with a custom stack. Both things are
needed to spin off a new thread. Then the usual setjmp()/longjmp() pair
is enough to save and restore a context, i.e., switch thread.
Add the initjmp() prototype to <include/setjmp.h> since it is common to
all architectures.
Add an entry to the API documentation: doc/api/setjmp.rst.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
- Introducing back send_init_stream for omap_hsmmc
to perform the 74 clocks cycle sequence
- Move scmi regulator subnode hack to scmi_regulator
- Typo fix
Add a minimal generic RK3399 board that only have eMMC, SDMMC, SPI flash
and USB OTG enabled. This defconfig can be used to boot from eMMC,
SD-card or SPI flash on most RK3399 boards that follow reference board
design.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Christopher Obbard <christopher.obbard@linaro.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add a minimal generic RK3328 board that only have eMMC, SDMMC, SPI flash
and USB OTG enabled. This defconfig can be used to boot from eMMC,
SD-card or SPI flash on most RK3328 boards that follow reference board
design.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Christopher Obbard <christopher.obbard@linaro.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The ROC-RK3576-PC is a SBC made by Firefly, designed around the RK3576
SoC. This adds the needed board infrastructure and config for it.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
As the name implies, it is built around the RK3576 SoC with 4x Cortex-A72
cores, four Cortex-A53 cores and Mali-G52 MC3 GPU.
Storage options are EMMC, SD-Card, a 2242 M.2 slot and the possibility to
use UFS 2.0 storage.
Video Output options are a HDMI port, a DSI connector as well as Display-
Port via the TypeC connector (all of them not yet supported).
Networking options are a Low-profile Gigabit Ethernet RJ45 port with
Motorcomm YT8531 PHY as well as WiFi via an AMPAK AP6256 module.
USB ports on the board are 1x USB 3.0 port, 1x USB 2.0 port, 1x USB Type-C
and it comes with 40-pin GPIO header
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250210205126.1173631-3-heiko@sntech.de
[ upstream commit: 887ff17cdd8f088a52e2b61e71f2b6c9b9678de6 ]
(cherry picked from commit 388e7272d092bd20e414cd408bac39d8fd02d765)
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add rk_gmac_ops and other special handling that is needed for GMAC to
work on RK3576.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The rk3576 uses a different base-compatible, as starting with this
generation, the clock phase tuning is done via registers inside
the mmc controller and not from inside the CRU.
In U-Boot we do not tune at all, so no other code changes are
necessary.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add support for RK3576 to the rockchip sdhci driver.
It's pretty similar to its cousins found in the RK3568 and RK3588 and the
specific hs400-tx-tap number was taken from the vendor-u-boot.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add support for RK3576 compatible.
The RK3576 OTP uses the same read mechanism as the RK3588, just
with different values for offset and size.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The current DT bindings for the rk3576 clock use a different ID than the
one that is supposed to be written to the hardware registers.
Thus, we cannot use directly the id provided in the phandle, but rather
use a lookup table to correctly setup the hardware.
This follows the implementation done in the Linux-Kernel and also
how the rk3588 does this both in the Linux-Kernel as well as U-Boot.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
[adapted from mainline Linux code for u-boot]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The Rockchip RK3576 is a ARM-based SoC with quad-core Cortex-A72
and quad-core Cortex-A53 including 6TOPS NPU, Mali-G52 MC3, HDMI Out,
DP, eDP, MIPI DSI, MIPI CSI2, LPDDR4/4X/5, eMMC5.1, SD3.0/MMC4.5, UFS,
USB OTG 3.0, Type-C, USB 2.0, PCIe 2.1, SATA 3, Ethernet, SDIO3.0, I2C,
UART, SPI, GPIO and PWM.
Add arch core support for it.
Signed-off-by: Xuhui Lin <xuhui.lin@rock-chips.com>
[adapted for mainline u-boot]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Currently the sdram code for arm64 expects CFG_SYS_SDRAM_BASE to be 0.
The ram being in front and the device-area behind it.
The upcoming RK3576 uses a different layout, with the device area
in front the ram, which then also extends past the 4G mark.
Adapt both the generic zone definitions as well as the ATAG parser
to be usable on devices where CFG_SYS_SDRAM_BASE is not 0.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The Radxa E20C is an ultra-compact network computer with a RK3528A SoC
that offers a wide range of networking capabilities.
Features tested on a Radxa E20C v1.104:
- SD-card boot
- eMMC boot
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add a minimal generic RK3528 board that only have eMMC and SD-card
enabled. This defconfig can be used to boot from eMMC or SD-card on most
RK3528 boards that follow reference board design.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Rockchip RK3528 has two Ethernet controllers based on Synopsys DWC
Ethernet QoS IP.
Add initial support for the RK3528 GMAC variant.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The 480m clk is controlled using regs in the PHY address space and not
in the USB GRF address space on e.g. RK3528 and RK3506.
Add a clkout_ctl_phy usb2phy_reg to handle enable/disable of the 480m
clk on these SoCs.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add support for rkrng variant, used by e.g. RK3528 and RK3576.
Imported from vendor U-Boot linux-6.1-stan-rkr5 tag with minor
adjustments for mainline.
Signed-off-by: Lin Jinhan <troy.lin@rock-chips.com>
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The Successive Approximation ADC (SARADC) in RK3528 uses the v2
controller and support:
- 10-bit resolution
- Up to 1MS/s sampling rate
- 4 single-ended input channels
- Current consumption: 0.5mA @ 1MS/s
Add support for the 4 channels of 10-bit resolution supported by SARADC
in RK3528.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add support for the OTP controller in RK3528. The OTPC is similar to the
OTPC in RK3568 and can use the same ops for reading OTP data.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Enable clock stopping to gate clock during phase code change to ensure
glitch free phase switching in auto-tuning circuit. Fixes HS200 mode
on RK3528.
POST_CHANGE_DLY
Time taken for phase switching and stable clock output.
- Less than 4-cycle latency
PRE_CHANGE_DLY
Maximum Latency specification between transmit clock and receive clock.
- Less than 4-cycle latency
TUNE_CLK_STOP_EN
Clock stopping control for Tuning and auto-tuning circuit. When enabled,
clock gate control output is pulled low before changing phase select
codes. This effectively stops the receive clock. Changing phase code
when clocks are stopped ensures glitch free phase switching.
- Clocks stopped during phase code change
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add initial support for SDHCI controller in RK3528.
Only MMC Legacy and MMC High Speed (52MHz) mode is supported after this,
more work is needed to get the faster HS200/HS400/HS400ES modes working.
Variant tap and delay num is copied from vendor Linux tag
linux-6.1-stan-rkr5.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
RK3528 and RK3576 use different tap and delay num for cmdout and strbin.
Move tap and delay num for cmdout and strbin to driver data to prepare
for adding new SoCs.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Rockchip RK3528 is a ARM-based SoC with quad-core Cortex-A53.
Add initial arch support for the RK3528 SoC.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add a rk3528-u-boot.dtsi extending the basic dts/upstream rk3528.dtsi
with bare minimum nodes to have a booting system from eMMC and SD-card.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add pinctrl driver for RK3528.
Imported from vendor U-Boot linux-6.1-stan-rkr5 tag with adjustments
to use regmap_update_bits().
Signed-off-by: Steven Liu <steven.liu@rock-chips.com>
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add support for reading DRAM size information from PMUGRF os_reg18 reg.
Compared to most Rockchip SoCs the RK3528 use os_reg18 for DRAM info,
instead of os_reg2.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add support for generating Rockchip Boot Image for RK3528.
Similar to RK3568, the RK3528 has 64 KiB SRAM and 4 KiB of it is
reserved for BootROM.
Signed-off-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Radxa E20C has two buttons, one SARADC maskrom button and one GPIO user
button.
Add support for the maskrom button using a adc-keys node, also add the
regulators used by SARADC controller.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20250304201642.831218-5-jonas@kwiboo.se
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[ upstream commit: 3a2819ee9c71d1c6388e456cc4eb042914d15d7e ]
(cherry picked from commit 460ef5b623e5fa69843305faf50f6b1a8e81e1cd)
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Radxa E20C has three gpio controlled leds (sys, wan and lan).
Add led nodes and set default trigger to heartbeat for the sys led and
netdev for the lan and wan leds.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20250304201642.831218-2-jonas@kwiboo.se
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[ upstream commit: 6a709e003492e9878d5f1357be0b2e1162e1e6a6 ]
(cherry picked from commit a3556ede6b48c7760ac3608ad77601fca26d2ce0)
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Radxa E20C route UART0 M0 pins (GPIO4_C7 and GPIO4_D0) to the onboard
CH340B for debug console use.
Add pinctrl for UART0 M0 pins used for serial console.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20250228064024.3200000-6-jonas@kwiboo.se
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[ upstream commit: 0d2312f0d3e4ce74af0977c1519a07dfc71a82ac ]
(cherry picked from commit 9bcf6ccdd87c3be48fe7d75150c6e403c5c0a42d)
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
