The MPU region dedicated for SDRAM for STM32F4 SoCs family
was set to 16MB, but STM32F429 Evaluation board have 32MB of SDRAM.
When kernel starts, only first 16MB of SDRAM are configured with XN
(eXecute Never) bit disabled, whereas kernel is using 32MB.
To avoid such situation in the future, extend this MPU region to 512MB
as for STM32F7/H7.
It fixes the following user land exception on STM32F429 Evaluation
board :
[ 1.713002] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[ 1.722605] devtmpfs: mounted
[ 1.733057] Freeing unused kernel memory: 72K
[ 1.737622] This architecture does not have kernel memory protection.
[ 1.744070] Run /sbin/init as init process
[ 1.906850]
[ 1.906850] Unhandled exception: IPSR = 00000004 LR = fffffffd
[ 1.914282] CPU: 0 PID: 1 Comm: init Not tainted 5.1.0-00002-gcf9ca5719954 #6
[ 1.921433] Hardware name: STM32 (Device Tree Support)
[ 1.926601] PC is at 0x1a00b64
[ 1.929642] LR is at (null)
[ 1.932669] pc : [<01a00b64>] lr : [<00000000>] psr: 01000000
[ 1.938993] sp : 01a5cfb0 ip : 00000000 fp : 00000000
[ 1.944269] r10: 01a43b00 r9 : 00000000 r8 : 00000000
[ 1.949564] r7 : 00000000 r6 : 00000000 r5 : 00000000 r4 : 00000000
[ 1.956168] r3 : 00000000 r2 : 00000000 r1 : 00000000 r0 : 00000000
[ 1.962701] xPSR: 01000000
[ 1.965506] CPU: 0 PID: 1 Comm: init Not tainted 5.1.0-00002-gcf9ca5719954 #6
[ 1.972658] Hardware name: STM32 (Device Tree Support)
[ 1.978132] [<0000c009>] (unwind_backtrace) from [<0000b24f>] (show_stack+0xb/0xc)
[ 1.986024] [<0000b24f>] (show_stack) from [<0000b947>] (__invalid_entry+0x4b/0x4c)
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
The Quad-SPI interface is able to manage up to 256Mbytes Flash
memory starting from 0x90000000 to 0x9FFFFFFF in the memory
mapped mode.
Add a dedicated MPU region into stm32_region_config.
See application note AN4760 available at www.st.com
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
This allows to boot all STM32F7 and STM32H7 boards independently
of the amount of embedded SDRAM.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
Another round of sorting Kconfig entries aplhabetically.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
CONFIG_SPL_RESET_SUPPORT has been renamed to CONFIG_SPL_DM_RESET, update
this Kconfig file.
Fixes: bfc6bae8fa ("reset: Rename CONFIG_SPL_RESET_SUPPORT to CONFIG_SPL_DM_RESET")
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Since commit 0e373c0ade ("spl: add SPL_RESET_SUPPORT"),
reset is supported in SPL, enable this flag for STM32F SoCs family.
This allows to remove a specific case in RCC mfd driver.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
The Memory Protection Unit(MPU) allows to partition memory into regions
and set individual protection attributes for each region. In absence
of MPU a default map[1] will take effect. Add support for configuring
MPU on Cortex-R, by reusing the existing support for Cortex-M processor.
[1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0460d/I1002400.html
Tested-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
On linux kernel side, on STM32F7 and STM32H7 SoCs, DMA requires
uncachable regions. These regions are defined in DT.
Since kernel linux v4.15, on ARMv7-M Cortex, kernel is able
to configure MPU regions depending on DT settings.
As kernel is able to configure MPU, this allows to remove
MPU region settings in bootloader.
On Cortex M processors, MPU allows to use a default memory map.
(see B3.5.4 MPU Control Register, MPU_CTRL in
https://developer.arm.com/products/architecture/m-profile/docs/ddi0403/latest/armv7-m-architecture-reference-manual)
Use the default memory map as background region for all STM32 SoCs
family with an additional MPU region corresponding to the SDRAM area.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Use available DM stm32_timer driver instead of dedicated
mach-stm32/stm32fx/timer.c.
Remove all defines or files previously used for timer usage in
arch/arm/include/asm/arch-stm32fx and in arch/arm/mach-stm32/stm32fx
Enable DM STM32_TIMER for STM32F4/F7 and H7.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Since 'commit af2f44267 ("fdc spl: use different BOARD_INIT MACRO for spl and tpl")'
board stm32f746-disco can't boot.
The macro CONFIG_IS_ENABLED() can't evaluate the value of
CONFIG_SPL_BOARD_INIT as it was defined in include/configs/stm32f746-disco.h
without attributed value.
Moving CONFIG_SPL_BOARD_INIT from stm32f746-disco.h to mach-stm32/Kconfig
fixes this issue.
Fixes: af2f44267 ("fdc spl: use different BOARD_INIT MACRO for spl and tpl")
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Move system flags from defconfig to mach-stm32/Kconfig
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
Now this driver is used across stm32f4, stm32f7 and stm32h7
SoCs family, give it a generic name.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
This board offers :
_ STM32F469NIH6 microcontroller featuring 2 Mbytes of Flash memory
and 324 Kbytes of RAM in BGA216 package
_ On-board ST-LINK/V2-1 SWD debugger, supporting USB reenumeration capability:
_ Mbed-enabled (mbed.org)
_ USB functions: USB virtual COM port, mass storage, debug port
_ 4 inches 800x480 pixel TFT color LCD with MIPI DSI interface and capacitive
touch screen
_ SAI Audio DAC, with a stereo headphone output jack
_ 3 MEMS microphones
_ MicroSD card connector
_ I2C extension connector
_ 4Mx32bit SDRAM
_ 128-Mbit Quad-SPI NOR Flash
_ Reset and wake-up buttons
_ 4 color user LEDs
_ USB OTG FS with Micro-AB connector
_ Three power supply options:
_ Expansion connectors and Arduino™ UNO V3 connectors
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Use available DM clk_stm32f.c driver instead of dedicated
mach-stm32/stm32f4/clock.c.
Migrate periph_clock defines from stm32_periph.h directly in
CLK driver. These periph_clock defines will be removed when STMMAC,
TIMER2 and SYSCFG drivers will support DM CLK.
Enable also CLK flag.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
In order to use common clock driver between STM32F4 and
STM32F7, remove clock_get() call
As APB_PSC is always set to 2, only case when
clock_get(CLOCK_AHB) != clock_get(CLOCK_APB1) is kept
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
MPU's region setup can be factorized between STM32F4/F7/H7 SoCs family
and used a common MPU's region config.
Only one exception for STM32H7 which doesn't have device area
located at 0xA000 0000.
For STM32F4, configure_clocks() need to be moved from arch_cpu_init()
to board_early_init_f().
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
In order to factorize code between STM32F4 and STM32F7
migrate all structs related to RCC clocks in include/stm32_rcc.h
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
As the timer 2 is on APB1 bus, the maximum of clock frequency of APB1 timer
clock is half of SYSCLK. Then to calculate the timer prescaler for timer 2
which need to be divided by 2.
Signed-off-by: Bo Shen <voice.shen@gmail.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
This patch adds support for stm32h7 soc family, stm32h743
discovery and evaluation boards.
For more information about STM32H7 series, please visit:
http://www.st.com/en/microcontrollers/stm32h7-series.html
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
With this change, it will be possible to de-select falcon mode & spl
will only boot U-Boot.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Suggested-by: Bo Shen <voice.shen@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
A few years ago STM32F1 SoCs support has been added :
0144caf22c gpio: stm32: add stm32f1 support
2d18ef2364 ARMv7M: add STM32F1 support
But neither STM32F1 dedicated defconfig nor board was
associated to these commits.
Got confirmation from Tom Rini and Matt Porter to remove
all this code [1]
[1] http://u-boot.10912.n7.nabble.com/Remove-STM32F1-support-td301603.html
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
The if in the else branch is superfluous.
We can use a simple if.
The problem was indicated by cppcheck.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The current code gives a warning:
arch/arm/mach-stm32/stm32f7/soc.c: In function 'arch_cpu_init':
arch/arm/mach-stm32/stm32f7/soc.c:38:2: error: 'for' loop initial
declarations are only allowed in C99 or C11 mode
for (int i = 0; i < ARRAY_SIZE(stm32_region_config); i++)
^
arch/arm/mach-stm32/stm32f7/soc.c:38:2: note: use option -std=c99,
-std=gnu99, -std=c11 or -std=gnu11 to compile your code
Fix it by moving the declaration to the top of the function.
Signed-off-by: Simon Glass <sjg@chromium.org>
Series-cc trini
With xip booting configuration, we don't need to copy the next image
(U-Boot or linux xipimage) from flash to sdram area.
Flash memory organization is like this:
spl-U-Boot: u-boot-spl.bin : 0x0800_0000
U-Boot : u-boot-dtb.bin : 0x0800_8000
linux : xipImage : 0x0800_8000
It is also possible to have U-Boot binary & linux binaries configured at
different addresses of flash memory like U-Boot at 0x0800_8000 & linux
xipImage at 0x0800_4000. But in any case, spl-U-Boot needs to be compiled for
U-Boot as next binary with SPL_OS_BOOT option disabled.
By default, spl is configured to boot linux xipImage.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
This commit supports booting from stm32 internal nor flash. spl U-Boot
initializes the sdram memory, copies next image (e.g. standard U-Boot)
to sdram & then jumps to entry point.
Here are the flash memory addresses for U-Boot-spl & standard U-Boot:
- spl U-Boot : 0x0800_0000
- standard U-Boot : 0x0800_8000
To compile u-boot without spl: Remove SUPPORT_SPL configuration
(arch/arm/mach-stm32/Kconfig)
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
[trini: Rework Kconfig logic a bit]
Signed-off-by: Tom Rini <trini@konsulko.com>
This configuration should be valid for all F7 family devices in general.
Here is the regions info:
- Region0 : 4GB : cacheable & executable.
- Region1 : 512MB : text area : strogly ordered & executable.
- Region2 : 512MB : peripherals : device memory & non-executable.
- Region3 : 512MB : peripherals : device memory & non-executable.
- Region4 : 512MB : cortexM area: strongly ordered & non-executable.
Higher region number overrides the lower region configuration.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
It also enables commands for cache enable/disable/status.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
cc: Christophe KERELLO <christophe.kerello@st.com>
add basic clock driver support for stm32f7 to enable clocks required by
the peripherals.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This patch adds glue code required for enabling the designware
mac on stm32f7 devices.
Signed-off-by: Michael Kurz <michi.kurz@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Use the clock setup function defined in clock.c instead of setting the
clock bits directly in the drivers.
Remove register definitions of RCC in rcc.h as these are already
defined in the struct in stm32.h
Signed-off-by: Michael Kurz <michi.kurz@gmail.com>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
Cleanup stm32f7 files:
- use BIT macro
- use GENMASK macro
- use rcc struct instead of macro additions
Add missing stm32f7 register in rcc struct
Signed-off-by: Michael Kurz <michi.kurz@gmail.com>
Acked-by: Vikas MANOCHA<vikas.manocha@st.com>
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>
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>
Same flash driver can be used by other stm32 families like stm32f7.
Better place for this driver would be mtd driver location.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
This patch removes the gpio clock enable from gpio driver & move it in the
board code, making it possible to use the gpio driver with other socs.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
This patch removes the uart clock enable from serial driver & move it in the
board code.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
