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This patch adds the documentation of the device tree bindings for the STM32
FMC2 NAND controller.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com>

We are facing issues in the driver since SPI NOR framework has moved
on SPI MEM framework, and SPI NAND framework is not running properly
with the current driver.

To be able to solve issues met on SPI NOR Flashes and to be able to
support SPI NAND Flashes, the driver has been reworked. We are now using
exec_op ops instead of using xfer ops.

Thanks to this rework, the driver has been successfully tested with:
 - mx66l51235l SPI NOR Flash on stm32f746 SOC
 - n25q128a SPI NOR Flash on stm32f769 SOC
 - mx66l51235l SPI NOR Flash on stm32mp1 SOC
 - mt29f2g01abagd SPI NAND Flash on stm32mp1 SOC
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Tested-by: Patrick DELAUNAY <patrick.delaunay@st.com>
Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com>

Adds alias to set the pincontrol seq id.
For STMFX gpio expander, force sequence number after
the last bank (GPIOZ) to avoid conflict between STM32MP and STMFX
gpio bank sequence number.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

In order to insure that hog GPIOs are configured early during
the boot process, force all pinctrl driver probing in board_init().
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Activate PINCTRL_STMFX and needed part for generic pincontrol
PINCTRL_FULL, PINCONF. Increase pre-reloc memory for MALLOC
(needed for each DM pinconfig node).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

This patch adds pinctrl/GPIO driver for STMicroelectronics
Multi-Function eXpander (STMFX) GPIO expander.
STMFX is an I2C slave controller, offering up to 24 GPIOs.
The driver relies on UCLASS_PINCTRL and UCLASS_GPIO.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Add adc related nodes. These nodes are used to detect the
current supplied by USB type-C power in port on DK1 and DK2
boards.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

For DK1/DK2 boards, check if power supply provides enough current
to allow the board to boot correctly.
ADC@0 channel 18 and 19 are connected to USB type-C CC1 and CC2
signals. The table below shows the behavior for different range of
CC1 or CC2:

  range       | power supply | red led |          console message
  (Volts)     |   (Amps)     | blinks  |
--------------|--------------|---------|-----------------------------------
[2.10 - 1.23[ |     3        |   NO    |    NO
[1.23 - 0.66[ |     1.5      | 3 times | WARNING 1.5A power supply detected
[0.66 - 0]    |     0.5      | 2 times | WARNING 500mA power supply detected

If detected current is < 3A, red led is kept ON after blinking.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Update README with DK1 and DK2 boards related informations
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

This patch synchronizes U-boot DT with kernel one
This is based on https://patchwork.kernel.org/cover/10797115/



This patch adds initial support of STM32MP157 discovery boards:
  - Add support of stm32mp157a discovery1 board (part number: STM32MP157A-DK1).
    This board embeds a STM32MP157a SOC with AC package (TFBGA361, 148 ios)
    and 512MB of DDR3. Several connections are available on this boards:
    4*USB2.0, 1*USB2.0 typeC, SDcard, RJ45, HDMI, Arduino connector, ...

  - Add support of stm32mp157c discovery2 board (part number: STM32MP157C-DK2).
    This board is a "super-set" of stm32mp157a-dk1. A display panel (otm8009a)
    and Murata wifi/BT combo is added.
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Add functions to read/update the non volatile memory of STPMIC1
(8 bytes-register at 0xF8 address) and allow access
with fuse command (bank=1, word > 0xF8).

For example:

STM32MP> fuse read 1 0xf8 8
Reading bank 1:

Word 0x000000f8: 000000ee 00000092 000000c0 00000002
Word 0x000000fc: 000000f2 00000080 00000002 00000033
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Updates the stm32mp157c devicetree to bind the U-Boot PSCI driver need for
power off command; TF-A for stm32mp15x supports PSCI 1.0.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Activate the command poweroff by default for STM32MP1:
- with PCSI from TF-A for trusted boot
- with PMIC sysreset request for basic boot (SYSRESET_POWER)
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Add sysreset support, and support power switch off request,
needed by poweroff command.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Alignment with  STPMIC1 datasheet
  s/MAIN_CONTROL_REG/MAIN_CR/g
  s/MASK_RESET_BUCK/BUCKS_MRST_CR/g
  s/MASK_RESET_LDOS/LDOS_MRST_CR/g
  s/BUCKX_CTRL_REG/BUCKX_MAIN_CR/g
  s/VREF_CTRL_REG/REFDDR_MAIN_CR/g
  s/LDOX_CTRL_REG/LDOX_MAIN_CR/g
  s/USB_CTRL_REG/BST_SW_CR/g
  s/STPMIC1_NVM_USER_STATUS_REG/STPMIC1_NVM_SR/g
  s/STPMIC1_NVM_USER_CONTROL_REG/STPMIC1_NVM_CR/g
and update all the associated defines.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Alignment with kernel driver name & binding
introduced by https://patchwork.kernel.org/cover/10761943/


to use the final marketing name = STPMIC1.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>

Prepare file modification for kernel alignment and
rename driver to stpmic1.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>

SW impact for Rev 1.2 of STPMIC1 in U-Boot:
Buck converters output voltage change for Buck1
=> Vdd min 0,725 to max 1,5V instead of 0.6V to 1.35V
   (see STPMIC1 datasheet / chapter 5.3 Buck converters)
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Replace STM32_BSEC_OTP() by STM32_BSEC_SHADOW() to
increase read performance.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Update bsec driver to use the device tree provided by Kernel.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

SPL need to set GPIOZ_SECCFGR = 0 to enable access to GPIOZ bank
(open security).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Always use upper case for serial number.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Initialize the system configuration for basic boot
- update interconnect setting
- disable pull-down for boot pin
- enable High Speed Low Voltage Pad mode for SPI, SDMMC, ETH, QSPI
- activate I/O compensation

Done by SSBL = TF-A for trusted boot
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Add SYSCON driver for syscfg and etpzc and reorder in alphabetics order
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Add configuration useful for test
- FIT support
- MEMTEST
- DFU
- CACHE
- TIME
- TIMER
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Update the memory layout to be aligned with other platform and avoid
overlap with 32MB Linux kernel (multiv7 image).
+ Kernel => 32MiB offset = 0xC2000000
            and increase the bootm size to 32MiB
+ FDT => 64MiB offset = 0xc4000000
+ SCRIPT => 65Mib offset = 0xc4100000
+ PXESCRIPT => 66Mib offset = 0xc4200000
+ SPLASHIMAGE => 67Mib offset = 0xc4300000
+ RAMDISK => 68Mib offset = 0xc4400000
             (not limited size)

In sources/boot/u-boot/doc/README.distro

+ kernel_addr_r: A size of 16MB for the kernel is likely adequate.
+ pxefile_addr_r: A size of 1MB for extlinux.conf is more than adequate.
+ fdt_addr_r: A size of 1MB for the FDT/DTB seems reasonable.
+ ramdisk_addr_r: It is recommended that this location be highest in RAM
                  out of fdt_addr_, kernel_addr_r, and ramdisk_addr_r,
                  so that the RAM disk can vary in size and use any
                 available RAM.
+ pxefile_addr_r: A size of 1MB for extlinux.conf is more than adequate.
+ scriptaddr: A size of 1MB for extlinux.conf is more than adequate.

For suggestions on memory locations for ARM systems, you must follow
the guidelines specified in Documentation/arm/Booting
in the Linux kernel tree.

And in sources/linux-stm32mp/Documentation/arm/Booting

The zImage may also be placed in system RAM and called there.  The
kernel should be placed in the first 128MiB of RAM.  It is recommended
that it is loaded above 32MiB in order to avoid the need to relocate
prior to decompression, which will make the boot process slightly
faster.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

The boot mode can be forced by key press
or by TAMP register, requested in kernel by syscon-reboot-mode

tamp: tamp@5c00a000 {
	compatible = "simple-bus", "syscon", "simple-mfd";
	reg = <0x5c00a000 0x400>;

	reboot-mode {
		compatible = "syscon-reboot-mode";
		offset = <0x150>; /* reg20 */
		mask = <0xff>;
		mode-normal = <0>;
		mode-fastboot = <0x1>;
		mode-recovery = <0x2>;
		mode-stm32cubeprogrammer = <0x3>;
		mode-ums_mmc0 = <0x10>;
		mode-ums_mmc1 = <0x11>;
		mode-ums_mmc2 = <0x12>;
	};
};
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

activate Fastboot for eMMC on EV1 board (mmc1)

$> sudo apt-get install android-tools-adb android-tools-fastboot
$> fastboot -i 0x0483 getvar bootloader-version
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Clearly separate bootcmd for stm32mp1 board
(bootcmd_stm32mp) and preboot management.
That solve issue for fastboot continue command.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

When DDR initialization failed, print error message
and stop the SPL execution.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Add explaination for the return value of psci_migrate_info_type:
  2 = Trusted OS.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Cosmetic cleanup in mach-stm32mp Kconfig
- remove duplicated SPL_DRIVERS_MISC_SUPPORT
- update help for TARGET_STM32MP1
- set value for NR_DRAM_BANKS
- remove one comment as DEBUG_UART is deactivated by default
- include board Kconfig at the end of the file
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

SPL displays the board model from device tree.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Display CPU part number and package information.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

- export the function get_bootmode() and reused it in spl code
- manage uart instance by alias (prepare v4.19 binding)
- solve issue on nand instance
- restore console for uart boot
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Set board name with the first dts compatible found in DT
code under CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG

The result with DEVICE_TREE=stm32mp157c-ev1 is:
    STM32MP> env print
    	board=stm32mp1
    	board_name=stm32mp157c-ev1
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Implement checkboard() function to display
- the boot chain used: basic or trusted
- the board compatible in device tree
- the board identifier and revision, saved in OTP59 for ST boards
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

As BSEC is secure aware, all register access need to be done
by TF-A for TRUSTED boot chain, when U-Boot is executed in
normal world.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Add support of trusted boot, using TF-A as first stage bootloader,
The boot sequence is
  BootRom >=> TF-A.stm32 (clock & DDR) >=> U-Boot.stm32

The TF-A monitor provides secure monitor with support of SMC
- proprietary to manage secure devices (BSEC for example)
- PSCI for power

The same device tree is used for STMicroelectronics boards with
basic boot and with trusted boot.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>