Commit graph

73815 commits

Author SHA1 Message Date
Tom Rini
6b69f15fd6 Xilinx changes for v2021.10
clk:
 - Add driver for Xilinx Clocking Wizard IP
 
 fdt:
 - Also record architecture in /fit-images
 
 net:
 - Fix plat/priv data handling in axi emac
 - Add support for 10G/25G speeds
 
 pca953x:
 - Add missing dependency on i2c
 
 serial:
 - Fix dependencies for DEBUG uart for pl010/pl011
 - Add setconfig option for cadence serial driver
 
 watchdog:
 - Add cadence wdt expire now function
 
 zynq:
 - Update DT bindings to reflect the latest state and descriptions
 
 zynqmp:
 - Update DT bindings to reflect the latest state and descriptions
 - SPL: Add support for ECC DRAM initialization
 - Fix R5 core 1 handling logic
 - Enable firmware driver for mini configurations
 - Enable secure boot, regulators, wdt
 - Add support xck devices and 67dr
 - Add psu init for sm/smk-k26 SOMs
 - Add handling for MMC seq number via mmc_get_env_dev()
 - Handle reserved memory locations
 - Add support for u-boot.itb generation for secure OS
 - Handle BL32 handoffs for secure OS
 - Add support for 64bit addresses for u-boot.its generation
 - Change eeprom handling via nvmem aliases
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Merge tag 'xilinx-for-v2021.10' of https://source.denx.de/u-boot/custodians/u-boot-microblaze into next

Xilinx changes for v2021.10

clk:
- Add driver for Xilinx Clocking Wizard IP

fdt:
- Also record architecture in /fit-images

net:
- Fix plat/priv data handling in axi emac
- Add support for 10G/25G speeds

pca953x:
- Add missing dependency on i2c

serial:
- Fix dependencies for DEBUG uart for pl010/pl011
- Add setconfig option for cadence serial driver

watchdog:
- Add cadence wdt expire now function

zynq:
- Update DT bindings to reflect the latest state and descriptions

zynqmp:
- Update DT bindings to reflect the latest state and descriptions
- SPL: Add support for ECC DRAM initialization
- Fix R5 core 1 handling logic
- Enable firmware driver for mini configurations
- Enable secure boot, regulators, wdt
- Add support xck devices and 67dr
- Add psu init for sm/smk-k26 SOMs
- Add handling for MMC seq number via mmc_get_env_dev()
- Handle reserved memory locations
- Add support for u-boot.itb generation for secure OS
- Handle BL32 handoffs for secure OS
- Add support for 64bit addresses for u-boot.its generation
- Change eeprom handling via nvmem aliases
2021-07-01 08:57:23 -04:00
T Karthik Reddy
45576273e9 xilinx: zynqmp: Add support for 67dr silicon
Add zynqmp 67dr silicon to zynqmp device id table.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-07-01 09:25:06 +02:00
Michal Simek
76bf8f3e44 watchdog: cadence: Add expire_now method
It is working in a way that only minimal timeout is setup to reach
expiration just right after it is setup.
Please make sure that PMUFW is compiled with ENABLE_EM flag.

On U-Boot prompt you can test it like:
ZynqMP> wdt dev watchdog@fd4d0000
ZynqMP> wdt list
watchdog@fd4d0000 (cdns_wdt)
ZynqMP> wdt dev
dev: watchdog@fd4d0000
ZynqMP> wdt expire
(And reset should happen here)

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-07-01 09:25:06 +02:00
Michal Simek
6e257c69fb arm64: zynqmp: Enable WDT command
Enable watchdog command to be able to work with watchdogs.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-07-01 09:25:06 +02:00
Tom Rini
90c2fd2af8 Merge branch 'next' of https://source.denx.de/u-boot/custodians/u-boot-spi into next
- Cypress s25hl-t/s25hs-t support (Takahiro Kuwano)
2021-06-30 15:48:09 -04:00
Tom Rini
b7ad721c83 Revert "TEST: USB_HOST not USB"
This reverts commit 4e1903a645.

This local commit was not intended to be pushed out.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-06-30 13:10:02 -04:00
Tom Rini
4e1903a645 TEST: USB_HOST not USB
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-06-30 11:38:52 -04:00
Marek Vasut
e2e95e5e25 spi: Update speed/mode on change
The spi_get_bus_and_cs() may be called on the same bus and chipselect
with different frequency or mode. This is valid usecase, but the code
fails to notify the controller of such a configuration change. Call
spi_set_speed_mode() in case bus frequency or bus mode changed to let
the controller update the configuration.

The problem can easily be triggered using the sspi command:
=> sspi 0:0@1000
=> sspi 0:0@2000
Without this patch, both transfers happen at 1000 Hz. With this patch,
the later transfer happens correctly at 2000 Hz.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-06-30 08:06:30 -04:00
Tom Rini
605cbcb0a4 Pull request for efi-2021-07-rc5-2
Documentation:
 
 * man-page for askenv
 
 bug fixes
 
 * correct display of BootOrder in efidebug command
 * do not allow TPL_HIGH_LEVEL for CreateEvent(Ex)
 * correct handling of unknown properties in SMBIOS tables
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Merge tag 'efi-2021-07-rc5-2' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request for efi-2021-07-rc5-2

Documentation:

* man-page for askenv

bug fixes

* correct display of BootOrder in efidebug command
* do not allow TPL_HIGH_LEVEL for CreateEvent(Ex)
* correct handling of unknown properties in SMBIOS tables
2021-06-29 11:25:39 -04:00
Takahiro Kuwano
5b8ec59e2a mtd: spi-nor-tiny: Add fixups for Cypress s25hl-t/s25hs-t
Fixes mode clocks for SPINOR_OP_READ_FAST_4B in tiny.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Takahiro Kuwano
1c3dd193b5 mtd: spi-nor-core: Add fixups for Cypress s25hl-t/s25hs-t
The nor->ready() and spansion_sr_ready() introduced earlier in this
series are used for multi-die package parts.

The nor->quad_enable() sets the volatile QE bit on each die.

The nor->erase() is hooked if the device is not configured to uniform
sectors, assuming it has 32 x 4KB sectors overlaid on bottom address.
Other configurations, top and split, are not supported at this point.
Will submit additional patches to support it as needed.

The post_bfpt/sfdp() fixes the params wrongly advertised in SFDP.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Takahiro Kuwano
72151ad10f mtd: spi-nor-core: Add Cypress manufacturer ID in set_4byte
Cypress chips support SPINOR_OP_EN4B(B7h) to enable 4-byte addressing mode.

Cypress chips support B8h to disable 4-byte addressing mode instead of
SPINOR_OP_EX4B(E9h).

This patch defines new opcode and updates set_4byte() to support
enable/disable 4-byte addressing mode for Cypress chips.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Takahiro Kuwano
d2d79895da mtd: spi-nor-core: Read status by Read Any Register
The spansion_sr_ready() reads status register 1 by Read Any Register
commnad. This function is called from Flash specific hook with die address
and dummy cycles to support multi-die package parts from Spansion/Cypress.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Takahiro Kuwano
24b1e2c690 mtd: spi-nor-core: Add the ->ready() hook
For dual/quad die package devices from Spansion/Cypress, the device's
status needs to be checked by reading status registers in all dies, by
using Read Any Register command. To support this, a Flash specific hook
that can overwrite the legacy status check is needed.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Takahiro Kuwano
a4aa9b7522 mtd: spi-nor-core: Add support for volatile QE bit
Some of Spansion/Cypress chips support volatile version of configuration
registers and it is recommended to update volatile registers in the field
application due to a risk of the non-volatile registers corruption by
power interrupt. This patch adds a function to set Quad Enable bit in CFR1
volatile.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Takahiro Kuwano
2d20f34485 mtd: spi-nor-core: Add support for Read/Write Any Register
Some of Spansion/Cypress chips support Read/Write Any Register commands.
These commands are mainly used to write volatile registers and access to
the registers in second and subsequent die for multi-die package parts.

The Read Any Register instruction (65h) is followed by register address
and dummy cycles, then the selected register byte is returned.

The Write Any Register instruction (71h) is followed by register address
and register byte to write.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Takahiro Kuwano
c95a914aed mtd: spi-nor-ids: Add Cypress s25hl-t/s25hs-t
The S25HL-T/S25HS-T family is the Cypress Semper Flash with Quad SPI.

https://www.cypress.com/file/424146/download (256Mb/512Mb/1Gb, single die)
https://www.cypress.com/file/499246/download (2Gb/4Gb, dual/quad die)

The full version can be found in the following links (registration
required).
https://community.cypress.com/t5/Semper-Flash-Access-Program/Datasheet-Semper-Flash-with-Quad-SPI/ta-p/260789?attachment-id=19522
https://community.cypress.com/t5/Semper-Flash-Access-Program/Datasheet-2Gb-MCP-Semper-Flash-with-Quad-SPI/ta-p/260823?attachment-id=29503

S25HL/HS-T (Semper Flash with Quad SPI) Family has user-configurable
sector architecture. By default, the 512Mb and 1Gb, single-die package
parts are configured to non-uniform that 4KB sectors overlaid on bottom
address. To support this, an erase hook makes overlaid sectors appear as
uniform sectors. The 2Gb, dual-die package parts are configured to uniform
by default.

Tested on Xilinx Zynq-7000 FPGA board.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Takahiro Kuwano
c32bfe0cd9 mtd: spi-nor: Add Cypress manufacturer ID
This patch adds Cypress manufacturer ID (34h) definition.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-29 19:16:54 +05:30
Tom Rini
8fba49bc8e Merge branch 'next' of https://source.denx.de/u-boot/custodians/u-boot-sh into next
- V3U Falcon board support
2021-06-28 18:32:07 -04:00
Tom Rini
296d5cffdd Merge branch 'next' of https://source.denx.de/u-boot/custodians/u-boot-spi into next
- xSPI Octal DTR support (Pratyush Yadav)
- MXIC SPI driver (Zhengxun)
2021-06-28 18:31:53 -04:00
Tom Rini
6d0453d889 Prepare v2021.07-rc5
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Merge tag 'v2021.07-rc5' into next

Prepare v2021.07-rc5

# gpg: Signature made Mon 28 Jun 2021 03:39:36 PM EDT
# gpg:                using RSA key 1A3C7F70E08FAB1707809BBF147C39FF9634B72C
# gpg: Good signature from "Thomas Rini <trini@konsulko.com>" [ultimate]

# Conflicts:
#	configs/am64x_evm_r5_defconfig
2021-06-28 16:22:13 -04:00
Tom Rini
3ef4572110 Prepare v2021.07-rc5
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-06-28 15:38:55 -04:00
Kunihiko Hayashi
534f0fbd65 arm64: Fix relocation of env_addr if POSITION_INDEPENDENT=y
If both POSITION_INDEPENDENT and SYS_RELOC_GD_ENV_ADDR are enabled,
wherever original env is placed anywhere, it should be relocated to
the right address.

Relocation offset gd->reloc_off is calculated with SYS_TEXT_BASE in
setup_reloc() and env address gd->env_addr is relocated by the offset in
initr_reloc_global_data().

gd->env_addr
  = (orig env) + gd->reloc_off
  = (orig env) + (gd->relocaddr - SYS_TEXT_BASE)

However, SYS_TEXT_BASE isn't always runtime base address when
POSITION_INDEPENDENT is enabled. So the relocated env_addr might point to
wrong address. For example, if SYS_TEXT_BASE is zero, gd->env_addr is
out of memory location and memory exception will occur.

There is a difference between linked address such as SYS_TEXT_BASE and
runtime base address. In _main, the difference is calculated as
"run-vs-link" offset. The env_addr should also be added to the offset
to fix the address.

gd->env_addr
  = (orig env) + ("run-vs-link" offset)   + gd->reloc_off
  = (orig env) + (SYS_TEXT_BASE - _start) + (gd->relocaddr - SYS_TEXT_BASE)
  = (orig env) + (gd->relocaddr - _start)

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Marek Vasut <marex@denx.de>
2021-06-28 14:47:10 -04:00
Ilias Apalodimas
70e80666f2 smbios: Fix SMBIOS tables
Commit e4f8e543f1a9("smbios: Drop the unused Kconfig options")
break SMBIOS tables.  The reason is that the patch drops the Kconfig
options *after* removing the code using them,  but that changes the semantics
of the code completely.  Prior to the change a non NULL value was used in
the 'product' and 'manufacturer ' fields.

Chapter 6.2 of the DMTF spec requires Manufacturer and Product Name to be
non-null on some of the tables. So let's add sane defaults for Type1/2/3.

* Before the patchset:

<snip>
Handle 0x0002, DMI type 2, 14 bytes
Base Board Information
        Manufacturer: Not Specified
        Product Name: Not Specified
        Version: Not Specified
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Features:
                Board is a hosting board
        Location In Chassis: Not Specified
        Chassis Handle: 0x0000
        Type: Motherboard

Invalid entry length (0). DMI table is broken! Stop.

* After the patchset:

<snip>
Handle 0x0005, DMI type 32, 11 bytes
System Boot Information
        Status: No errors detected

Handle 0x0006, DMI type 127, 4 bytes
End Of Table

Fixes: e4f8e543f1 ("smbios: Drop the unused Kconfig options")
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-06-28 19:57:13 +02:00
Ilias Apalodimas
ff192304b6 smbios: Fix BIOS Characteristics Extension Byte 2
We currently define the EFI support of an SMBIOS table as the third bit of
"BIOS Characteristics Extension Byte 1". The latest DMTF spec defines it
on "BIOS Characteristics Extension Byte 2".

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

Remove superfluous assignment.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-06-28 19:57:13 +02:00
Adarsh Babu Kalepalli
a86ed41bff doc/usage: cmd-usage help file for askenv
help file for using askenv cmd is created.
It provides description on the command purpose,
description of arguments,
couple of examples (illustrating command usage),
configuration parameter and
possible return values.

Signed-off-by: Adarsh Babu Kalepalli <opensource.kab@gmail.com>
Add missing entry in doc/usage/index.rst.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-06-28 19:57:13 +02:00
Heinrich Schuchardt
8c6532d7c4 smbios: convert function descriptions to Sphinx style
Use 'Return:' instead of '@return:'.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-06-28 19:57:13 +02:00
Heinrich Schuchardt
2b8723c5a1 efidebug: correct display of BootOrder
Display the number of the boot option and not its index.

Fixes: 2ecee31017 ("efi_loader: use efi_create_indexed_name()")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-06-28 19:57:13 +02:00
Heinrich Schuchardt
7891fe675d efi_loader: TPL_HIGH_LEVEL not allowed for CreateEvent
According to chapter 7.1 "Event, Timer, and Task Priority Services"
TPL_HIGH_LEVEL should not be exposed to applications and drivers.

According to the discussion with EDK II contributors this implies that
CreateEvent() shall not allow to create events with TPL_HIGH_LEVEL.

Cc: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>
2021-06-28 19:57:13 +02:00
Tom Rini
2bba78076b configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-06-28 10:17:29 -04:00
Piyush Mehta
436978b1d8 arm64: dts: zynqmp: Add psgtr and phy entry for USB and SATA node
This patch adds psgtr clocks and phy entry for USB0, USB1 and SATA node for
zc1751-xm017-dc3 board.

Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-06-28 09:35:27 +02:00
Ashok Reddy Soma
53b2af18ca net: xilinx: axi_emac: Add support for 10G/25G AXI ethernet
Add support for 10G/25G (XXV) high speed ethernet. This Makes use of
the exiting AXI DMA, similar to 1G.

Signed-off-by: Alessandro Temil <atemil@waymo.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-06-28 09:08:20 +02:00
Ashok Reddy Soma
215f2064c3 net: xilinx: axi_emac: Cleanup of of_to_plat()
There are lot of accesses to priv data in of_to_plat(), which is incorrect.
Create a platform data structure and use it in of_to_plat(), then copy all
platform data to priv data in probe.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-06-28 09:08:20 +02:00
Kunihiko Hayashi
da1af52f75 serial: zynq: Add support for serial parameters
This adds serial parameters that include stop bit mode, parity mode,
and character length. Mark parity and space parity modes are not
supported.

At the moment, the only path to call setconfig directly is DM testing,
however, this affects the size of SPL for DM testing, so it doesn't
apply to SPL.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-06-28 08:56:03 +02:00
Michal Simek
5e9d2833ed serial: Add additional depencies for PL010 and PL011 drivers
Both of these drivers are implemented with and without DM that's why more
symbols should be handled.
The most problematic one is enabling DEBUG_UART_PL011 based on
PL01X_SERIAL(DM based) because debug console has type selection based on
it.
	enum pl01x_type type = CONFIG_IS_ENABLED(DEBUG_UART_PL011) ?
				TYPE_PL011 : TYPE_PL010;

Without it pl01x_generic_setbrg() is configuring different registers.

Fixes: 4cc24aeaf4 ("serial: Add missing Kconfig dependencies for debug consoles")
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-06-28 08:55:04 +02:00
Pratyush Yadav
f6adec1af4 mtd: spi-nor-core: Allow using Micron mt35xu512aba in Octal DTR mode
Since this flash doesn't have a Profile 1.0 table, the Octal DTR
capabilities are enabled in the post SFDP fixup, along with the 8D-8D-8D
fast read settings.

Enable Octal DTR mode with 20 dummy cycles to allow running at the
maximum supported frequency of 200Mhz.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:06:57 +05:30
Pratyush Yadav
ea9a22f7e7 mtd: spi-nor-core: Add support for Cypress Semper flash
The Cypress Semper flash is an xSPI compliant octal DTR flash. Add
support for using it in octal DTR mode.

The flash by default boots in a hybrid sector mode. Switch to uniform
sector mode on boot. Use the default 20 dummy cycles for a read fast
command.

The SFDP programming on some older versions of the flash was incorrect.
Fixes for that are included in the fixup hooks.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:06:43 +05:30
Takahiro Kuwano
ee52b0b764 mtd: spi-nor-core: Add non-uniform erase for Spansion/Cypress
Some of Spansion/Cypress chips have overlaid 4KB sectors at top and/or
bottom, depending on the device configuration, while U-Boot supports
uniform sector layout only.

The spansion_erase_non_uniform()  erases overlaid 4KB sectors,
non-overlaid portion of normal sector, and remaining normal sectors, by
selecting correct erase command and size based on the address to erase
and size of overlaid portion in parameters. Since different Spansion
flashes can use different opcode for erasing the 4K sectors, the opcode
must be passed in as a parameter based on the flash being used.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
[p.yadav@ti.com: Refactor the function to be compatible with nor->erase,
make 4K opcode customizable, call spi_nor_setup_op() before executing
the op.]
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:06:07 +05:30
Pratyush Yadav
aba0bcd7bd mtd: spi-nor-core: allow truncated erases
On devices with non-uniform sector sizes like Spansion S25 or S28 family
of flashes the sector under erase does not necessarily have to be
mtd->erasesize bytes long. For example, on S28 flashes the first 128 KiB
region is composed of 32 4 KiB sectors, then a 128 KiB sector, and then
256 KiB sectors till the end.

Let the flash-specific erase functions erase less than the requested
length in case of the 4 or 128 KiB sectors and report the number of
bytes erased back to the calling function.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:05:38 +05:30
Pratyush Yadav
0be8ab1f16 mtd: spi-nor-core: Perform a Soft Reset on boot
When the flash is handed to us in a stateful mode like 8D-8D-8D, it is

difficult to detect the mode the flash is in. One option is to read SFDP
in all modes and see which one gives the correct "SFDP" signature, but
not all flashes support SFDP in 8D-8D-8D mode.

Further, even if you detect the mode of the flash via SFDP, you still
have the problem of actually reading the ID. The Read ID command is not
standardized across flash vendors. Flashes can have different dummy
cycles needed for reading the ID. Some flashes even expect a 4-byte
dummy address with the Read ID command. All this information cannot be
obtained from the SFDP table.

So, perform a Software Reset sequence before reading the ID and
initializing the flash. A Soft Reset will bring back the flash in its
default protocol mode assuming no non-volatile configuration was set.
This will let us detect the flash even if ROM hands it to us in Octal
DTR mode.

To accommodate cases where there is more than one flash on a board, and
only one of them needs a soft reset, failure to reset is not made fatal,
and we still try to read ID if possible.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:05:17 +05:30
Pratyush Yadav
575caf4500 mtd: spi-nor-core: Perform a Soft Reset on shutdown
On probe, the SPI NOR core will put a flash in 8D-8D-8D mode if it
supports it. But Linux as of now expects to get the flash in 1S-1S-1S
mode. Handing the flash to Linux in Octal DTR mode means the kernel will
fail to detect the flash.

So, we need to reset to Power-on-Reset (POR) state before handing off
the flash. A Software Reset command can be used to do this.

One limitation of the soft reset is that it will restore state from
non-volatile registers in some flashes. This means that if the flash was
set to 8D mode in a non-volatile configuration, a soft reset won't help.
This commit assumes that we don't set any non-volatile bits anywhere,
and the flash doesn't have any non-volatile Octal DTR mode
configuration.

Since spi-nor-tiny doesn't (and likely shouldn't) have
spi_nor_soft_reset(), add a dummy spi_nor_remove() for it that does
nothing.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:04:53 +05:30
Pratyush Yadav
a1122a3d98 mtd: spi-nor-core: Detect Soft Reset sequence support from BFPT
A Soft Reset sequence will return the flash to Power-on-Reset (POR)
state. It consists of two commands: Soft Reset Enable and Soft Reset.
Find out if the sequence is supported from BFPT DWORD 16.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:04:30 +05:30
Pratyush Yadav
b058f108d7 mtd: spi-nor-core: Do not make invalid quad enable fatal
The Micron MT35XU512ABA flash does not support the quad enable bit. But
instead of programming the Quad Enable Require field to 000b ("Device
does not have a QE bit"), it is programmed to 111b ("Reserved").

While this is technically incorrect, it is not reason enough to abort
BFPT parsing. Instead, continue BFPT parsing assuming there is no quad
enable bit present.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:04:09 +05:30
Pratyush Yadav
6b808e0864 mtd: spi-nor-core: Enable octal DTR mode when possible
Allow flashes to specify a hook to enable octal DTR mode. Use this hook
whenever possible to get optimal transfer speeds.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:03:57 +05:30
Pratyush Yadav
b862765c7c mtd: spi-nor-core: Prepare Read SR and FSR for Octal DTR mode
The xSPI Profile 1.0 table specifies how many dummy cycles and address
bytes are needed for the Read Status Register command in Octal DTR mode.
Use that information to send the correct Read SR command.

Some controllers might have trouble reading just 1 byte in DTR mode. So,
when we are in DTR mode read 2 bytes and discard the second. This shows
no side effects with the two flashes I tested: Micron mt35xu512aba and
Cypress s28hs512t.

Update Read FSR to mimic Read SR because they share the same
characteristics.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:02:39 +05:30
Pratyush Yadav
4d40e82663 mtd: spi-nor-core: Parse xSPI Profile 1.0 table
This table is indication that the flash is xSPI compliant and hence
supports octal DTR mode. Extract information like the fast read opcode,
the number of dummy cycles needed for a Read Status Register command,
and the number of address bytes needed for a Read Status Register
command.

The default dummy cycles for a fast octal DTR read are set to 20. Since
there is no simple way of determining the dummy cycles needed for the
fast read command, flashes that use a different value should update it
in their flash-specific hooks.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:02:01 +05:30
Pratyush Yadav
9ec5ea0127 mtd: spi-nor-core: Get command opcode extension type from BFPT
Some devices in DTR mode expect an extra command byte called the
extension. The extension can either be same as the opcode, bitwise
inverse of the opcode, or another additional byte forming a 16-byte
opcode. Get the extension type from the BFPT. For now, only flashes with
"repeat" and "inverse" extensions are supported.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:01:15 +05:30
Pratyush Yadav
22ae535b7d mtd: spi-nor-core: prepare BFPT parsing for JESD216 rev D
JESD216 rev D makes BFPT 20 DWORDs. Update the BFPT size define to
reflect that.

The check for rev A or later compared the BFPT header length with the
maximum BFPT length, BFPT_DWORD_MAX. Since BFPT_DWORD_MAX was 16, and so
was the BFPT length for both rev A and B, this check worked fine. But
now, since BFPT_DWORD_MAX is 20, it means this check will also stop BFPT
parsing for rev A or B, since their length is 16.

So, instead check for BFPT_DWORD_MAX_JESD216 to stop BFPT parsing for
the first JESD216 version, and check for BFPT_DWORD_MAX_JESD216B for the
next two versions.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:01:00 +05:30
Pratyush Yadav
95954f55e9 mtd: spi-nor-core: Add support for DTR protocol
Double Transfer Rate (DTR) is SPI protocol in which data is transferred
on each clock edge as opposed to on each clock cycle. Make
framework-level changes to allow supporting flashes in DTR mode.

Right now, mixed DTR modes are not supported. So, for example a mode
like 4S-4D-4D will not work. All phases need to be either DTR or STR.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 12:00:32 +05:30
Pratyush Yadav
6182d15b3e mtd: spi-nor-core: Do not set data direction when there is no data
Even when spi_nor_write_reg() has no data to write, like when executing
a write enable operation, it sets the data direction to
SPI_MEM_DATA_OUT. This trips up spi_mem_check_buswidth() because it
expects a data phase when there is none. Make sure the data direction is
set to SPI_MEM_NO_DATA when there is no data to write.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-06-28 11:59:47 +05:30