Add support for changing DT at run time. It is done via board_detection()
which returns platform_id and platform_version which can be used via
board_name_decode() to compose board_local_name string which corresponds
with DT which is should be used.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

There is no need to keep fru_content around. Free this space.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Origin code was allocating only pointers to struct xilinx_board_description
and there was separate allocation for structure self and freeing in case of
failure.
The code is directly allocating space for all structures by one calloc to
simlify logic.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Use variable which points to DEVICE_TREE by default. The reason for this
change is to enable DTB_RESELECT and MULTI_DTB_FIT where board detection
can be used for change DTB at run time. That's why there must be reference
in board_fit_config_name_match() via variable instead of hardcoding it
which is sufficient for that use case.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

FRU spec expected \0 for unused symbols but unfortunately a lot of boards
are using spaces instead of \0. That's why after saving it to desc->name
name is checked again and all spaces are converted to \0. This will ensure
that names can be used for string manipulations like concatenation.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Enable button uclass and also gpio-key driver by default.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Enable it for TPM usage.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

dev_dbg, dev_err and dev_warn seems to be moved to different header file.
Include dm/device_compat.h file to compile properly.
Signed-off-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Add debug messages to see HW boot mode and also alternative boot mode in
logs directly.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

The commit 573a3811 ("sysreset: psci: support system reset in a generic
way with PSCI") has added support for warm reset via PSCI but this hasn't
been reflected in usage message and user has to look at the code how to run
it. That's why update usage text to make this clear.

Here is full help with updated usage:
ZynqMP> help reset
reset - Perform RESET of the CPU

Usage:
reset - cold boot without level specifier
reset -w - warm reset if implemented
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NIgor Opaniuk <igor.opaniuk@foundries.io>

The first name is taken from command name that's why shouldn't be listed in
help. And commands shouldn't be listed with <> which means value but value
itself is command name.
Also add description for commands to make it clear what it does.

Before
pwm pwm <invert> <pwm_dev_num> <channel> <polarity>
pwm <config> <pwm_dev_num> <channel> <period_ns> <duty_ns>
...

After:
pwm invert <pwm_dev_num> <channel> <polarity> - invert polarity
pwm config <pwm_dev_num> <channel> <period_ns> <duty_ns> - config PWM
pwm enable <pwm_dev_num> <channel> - enable PWM output
pwm disable <pwm_dev_num> <channel> - disable PWM output
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Enable CONFIG_DISPLAY_CPUINFO to display SoC family & revision.
Signed-off-by: NT Karthik Reddy <t.karthik.reddy@xilinx.com>
Reviewed-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Add print_cpuinfo() to print SoC info like family & revision.
This function depends on CONFIG_DISPLAY_CPUINFO config.
Signed-off-by: NT Karthik Reddy <t.karthik.reddy@xilinx.com>
Reviewed-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

soc_xilinx_versal driver allows identification of family & revision
of versal SoC. This driver is selected by CONFIG_SOC_XILINX_VERSAL.
Probe this driver using platdata U_BOOT_DEVICE structure which is
defined at mach-versal/cpu.c.
Add this config to xilinx_versal_virt_defconfig &
xilinx_versal_mini_ospi_defconfig file to select this driver.
Signed-off-by: NT Karthik Reddy <t.karthik.reddy@xilinx.com>
Reviewed-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

soc_xilinx_zynqmp driver allows identification of family & revision
of zynqmp SoC. This driver is selected by CONFIG_SOC_XILINX_ZYNQMP.
Add this config to xilinx_zynqmp_virt_defconfig file.
Probe this driver using platdata U_BOOT_DEVICE structure which is
specified in mach-zynqmp/cpu.c.
Signed-off-by: NT Karthik Reddy <t.karthik.reddy@xilinx.com>
Reviewed-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Add kernel-doc description for fdt_fixup_memory_banks() because it is
implemented in one specific way and this information should be available
for others to decide if their SoC conforms to it.
If you don't want U-Boot to update your memory DT layout please disable
CONFIG_ARCH_FIXUP_FDT_MEMORY.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Based on DT spec you can have one memory node which multiple ranges or
multiple nodes.
fdt_fixup_memory_banks() is not implemented in a correct way when multiple
memory nodes are present because all ranges are put it to the first memory
node found. And next memory nodes are kept in DT which ends up in the same
range specification in the same DT.

Here is what it is happening.
Origin DT.
memory@0 {
        device_type = "memory";
        reg = <0x0 0x0 0x0 0x80000000>;
};

memory@800000000 {
        device_type = "memory";
        reg = <0x8 0x00000000 0x0 0x80000000>;
};

After fdt_fixup_memory_banks()

memory@0 {
        device_type = "memory";
        reg = <0x0 0x0 0x0 0x80000000>, <0x8 0x00000000 0x0 0x80000000>;
};

memory@800000000 {
        device_type = "memory";
        reg = <0x8 0x00000000 0x0 0x80000000>;
};

As is visible memory@0 node got second range but there is still
memory@800000000 node present and 2G range is listed twice.

The solution can't be that second node is removed because it can be
referenced already that's why it is better for us to disable this option
for now.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Enable cfi flash on zc770-xm012 configuration.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Single configuration is working fine and no issue to enable it.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Replace 'io-standard' property with 'power-source' property in all
zynq dts files to be in sync with Zynq Pinctrl driver.
Signed-off-by: NSai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Add missing "jedec, spi-nor" compatible string for QSPI flash node.
Spi-nor framework uses this compatibility string to probe &
initialize flash. With missing compatibility string we are observing
below error:

Zynq> sf probe 0 0 0
 jedec_spi_nor spi_flash@0:0: unrecognized JEDEC id bytes:
00, 00, 00  Failed to initialize SPI flash at 0:0 (error -2)
Signed-off-by: NRaju Kumar Pothuraju <raju.kumar-pothuraju@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Trivial style patch.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Fix header alignment.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

By dt-binding specs led nodes should have -led suffix that's why add it.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Based on thread
https://lists.denx.de/pipermail/u-boot/2021-June/451828.html
especially
"Overall we have a deficiency in the UEFI implementation in that we
cannot deal with block devices added or removed after initialization."
there is a need to deal with removable media as usb/scsi/sata.

That's why bridge this gap in EFI implementation by resetting usb and
scsi resets to get all disks before efi_init_obj_list() is called.

In our standard boot flow, where we use distro boot, order is fixed as
"jtag mmc0 mmc1 qspi0 nand0 usb0 usb1 scsi0 pxe dhcp" with prioritizing
boot device added by commit 2882b39d ("arm64: zynqmp: Setup the first
boot_target at run time").
When device has ESP partition all devices should be detected because then
efi_disk_register() in efi_init_obj_list() is called only once.

The first such a device is sd/emmc(mmc0/mmc1) and then disks on usb/sata
are not handled at all.

The commit 6bb577db ("arm64: zynqmp: Disable
EFI_CAPSULE_ON_DISK_EARLY") also pointed out on this issue but detection of
removable media wasn't solved that's why do it now via preboot command.

I have tested cases without usb and scsi and there is no problem with
calling resets without devices itself.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Do not enable watchdog driver in default zynqmp configuration. The reason
is that not all distributions are handling watchdog properly and then
expires and system resets. If someone needs watchdog in their design please
enable it by hand.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Since set_control_reg is available in sdhci.c, use it and remove
arasan_sdhci_set_control_reg().
Signed-off-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

As per SD spec when SD host controller is reset, it takes 1000msec
to detect the card state. In case, if we enable the sd bus voltage &
card detect state is not stable, then host controller will disable
the sd bus voltage.

In case of warm/subsystem reboot, due to unstable card detect state
host controller is disabling the sd bus voltage to sd card causing
sd card timeout error. So we wait for a maximum of 1000msec to get
the card detect state stable before we enable the sd bus voltage.

This current fix is workaround for now, this needs to be analysed
further. Zynqmp platform should behave the same as Versal, but we
did not encounter this issue as of now. So we are fixing it for
Versal only.
Signed-off-by: NT Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Move tapdelay function calls to zynq_sdhci.c and make them static
inline. zynqmp_tap_delay.h has function prototypes for the functions
defined in tap_delays.c, which will not be needed anymore.

Remove tap_delays.c and zynqmp_tap_delay.h files.
Signed-off-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com>

Currently xilinx sdhci driver is using zynqmp_mmio_write() to set
tapdelay values and DLL resets. Continue to use this for SPL and mini
U-Boot where U-Boot will be executed at EL3 level.

Use firmware call xilinx_pm_request() using appropriate arguments to
set input/output tapdelays and also for DLL resets in regular flow(EL2).

Host driver should explicitly request DLL reset before ITAP (assert DLL)
and after OTAP (release DLL) to avoid issues in some cases. Also handle
error return where possible.
Signed-off-by: NT Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com>

Add enums for pm node id's, pm ioctl id's, tapdelay types, dll reset types
Signed-off-by: NT Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

set_delay() has return type as void. If there are any errors while
setting tapdelay's it won't be able to return them.

Change the prototype of set_delay() in sdhci_ops structure and return
the errors from wherever it is called.
Signed-off-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Change return type of arasan_sdhci_set_tapdelay() to int, to facilitate
returning errors. Get return values from input and output set clock phase
functions inside arasan_sdhci_set_tapdelay() and return those errors.
Signed-off-by: NT Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: NAshok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Add firmware based reset controller for Xilinx ZynqMP SoC to let other
drivers to call reset functions. Driver is only tested on Xilinx ZynqMP but
support for Xilinx Versal can be simply added. That's why reset_id and
nr_reset are assigned in probe folder.
Driver is inpired by driver from Linux kernel.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Enable RTC command to be able to check available.
And also enable ZynqMP RTC driver to be possible to use by default.

Here is the list when both drivers are enabled:
ZynqMP> rtc list
RTC #0 - rtc_emul
RTC #1 - rtc@ffa60000
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

The whole driver logic is taken from Linux kernel but only set/get/reset
functions are implemented. When device is power off RTC is power out of
battery.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

RTCs are using sequence number defined in aliases node. Date command with
DM_RTC enabled is looking for the first RTC with index 0. But when
RTC_EMULATION is enabled it gets likely most of the time index 0 even when
system has rtc0 device via aliases node and gets sequence number 0.
That's why extend the code to look for sequence 0 number first. If this
fails continue to use existing device with index 0.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

RTCs are using aliases for sequences. That's why enable
DM_UC_FLAG_SEQ_ALIAS for exact RTC indentification.
The same flag is used by a lot of other uclasses like mmc, pci, serial,
spi, timer, tpm, etc.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Based on discussion at
https://lore.kernel.org/r/20200318125003.GA2727094@kroah.com we got
recommendation to use explicit values for all enum values.
The patch is following this recommendation.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/daeb67ded45d8a8f6a96717d1fb9c84439dd2ae8.1612361627.git.michal.simek@xilinx.com

The main reason for this to be implemented is capsule update.
Two memories are supported and tested which is MMC FAT based and QSPI
based.

For creating capsule these commands are used:
./tools/mkeficapsule --raw spl/boot.bin --index 1 capsule1.bin
./tools/mkeficapsule --raw u-boot.itb --index 2 capsule2.bin

Then transfer to SD card where these commands run:
load mmc 0 10000000 capsule1.bin
efidebug capsule update -v 10000000
load mmc 0 10000000 capsule2.bin
efidebug capsule update -v 10000000

Depends on the boot device used are binaries loaded to qspi or mmc fat
partition.
Also multiboot register is handled to make sure that the same location(id)
is used as image which is upgraded.

Two locations are used by purpose for SPL flow. If only boot.bin is used
create only one capsule.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>