Commit graph

76548 commits

Author SHA1 Message Date
Simon Glass
ce34a6653f mmc: Allow for children other than the block device
At present the MMC uclass assumes that the only child it can have is a
block device. Update this so we can add a bootmethod too.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-11-28 16:51:51 -07:00
Simon Glass
0bf61aced2 sandbox: mmc: Support a backing file
Provide a way for sandbox MMC to present data from a backing file. This
allows a filesystem to be created on the host and easily served via an
emulated mmc device.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-11-28 16:51:51 -07:00
Simon Glass
a0ff280a89 sandbox: Support unmapping a file
Add the opposite of mapping, so that we can unmap and avoid running out of
address space.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-11-28 16:51:51 -07:00
Simon Glass
15156c95e9 test/py: Allow passing input to a program
When running a program on the host, allow input to be passed in as stdin.
This is needed for running sfdisk, for example.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-11-28 16:51:51 -07:00
Jan Kiszka
c700f109a3 binman: Fix extract command for using non-absolute image paths
Otherwise the updated image will end up in the temporary folder that is
purged after completion.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-28 16:51:51 -07:00
Simon Glass
1fb115e4d2 sf: doc: Add documentation for the 'sf' command
This command is fairly complicated so documentation is useful.
Unfortunately I an not sure how the MTD side of things works and cannot
find information about that.

Signed-off-by: Simon Glass <sjg@chromium.org>

Acked-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-11-28 16:51:51 -07:00
Simon Glass
3512e1570d sf: Tidy up code to avoid #ifdef
Update this code to use IS_ENABLED() instead.

Signed-off-by: Simon Glass <sjg@chromium.org>

Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-11-28 16:51:51 -07:00
Simon Glass
ad4e010054 sf: Use const for the stage name
This is not updated at runtime so should be marked const. Update the code
accordingly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-11-28 16:51:51 -07:00
Simon Glass
6b03448713 command: Use a constant pointer for the help
This text should never change during execution, so it makes sense to
use a const char * so that it can be declared as const in the code.
Update struct cmd_tbl with a const char * pointer for 'help'.

We cannot make usage const because of the bmode command, used on mx53ppd
for example.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-11-28 16:51:51 -07:00
Simon Glass
7acb322568 env: Avoid using GNU features in awk
GNU has a very useful third argument to match() but this is not supported
in the POSIX awk.

Update the code to cope, so that the script is POSIX-compliant.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Mark Kettenis <mark.kettenis@xs4all.nl>
2021-11-28 16:51:51 -07:00
Tom Rini
693650b15d Pull request for efi-2022-01-rc3-2
Test:
 * fix pylint warnings
 
 UEFI:
 * disable interrupts before removing devices in ExitBootServices()
 * implement poweroff in efi_system_reset() on sandbox
 * allow booting via EFI even if some block device fails
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Merge tag 'efi-2022-01-rc3-2' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request for efi-2022-01-rc3-2

Test:
* fix pylint warnings

UEFI:
* disable interrupts before removing devices in ExitBootServices()
* implement poweroff in efi_system_reset() on sandbox
* allow booting via EFI even if some block device fails
2021-11-26 17:10:53 -05:00
Heinrich Schuchardt
2b5e710859 test: fix pylint error in u_boot_console_exec_attach.py
* provide module docstring

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-26 22:02:37 +01:00
Heinrich Schuchardt
6e6d37f7f9 test: fix pylint error in u_boot_console_sandbox.py
* provide module docstring

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-26 22:02:37 +01:00
Heinrich Schuchardt
9aa1a14d13 test: fix pylint errors in u_boot_utils.py
* there is no os.path.unlink() method
* don't inherit from object
* add module docstring
* move imports to the top
* avoid unused variable

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-26 22:02:37 +01:00
Heinrich Schuchardt
67e9b64701 test: fix pylint errors in u_boot_spawn.py
* don't inherit from object
* imports should be on the top level
* avoid unused variable names
* avoid unnecessary else after raise

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-26 22:02:37 +01:00
Heinrich Schuchardt
09e409810a test: fix pylint errors in multiplexed_log.py
* don't inherit from object
* remove superfluous comprehension
* add module docstring

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-26 22:02:37 +01:00
Heinrich Schuchardt
9abd2ca96e efi_selftest: simplify endian conversion for FDT test
UEFI code is always little-endian. Remove a superfluous test.

Remove a superfluous type conversion.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-11-26 21:30:59 +01:00
Heinrich Schuchardt
9d1564dabc efi_loader: segfault in efi_clear_os_indications()
If we call efi_clear_os_indications() before initializing the memory store
for UEFI variables a NULL pointer dereference occurs.

The error was observed on the sandbox with:

    usb start
    host bind 0 sandbox.img
    load host 0:1 $kernel_addr_r helloworld.efi
    bootefi $kernel_addr_r

Here efi_resister_disk() failed due to an error in the BTRFS implementation.

Move the logic to clear EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED
to the rest of the capsule code.

If CONFIG_EFI_IGNORE_OSINDICATIONS=y, we should still clear the flag.
If OsIndications does not exist, we should not create it as it is owned by
the operating system.

Fixes: 149108a3eb ("efi_loader: clear OsIndications")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-11-26 21:30:59 +01:00
Heinrich Schuchardt
1ae35c72b8 test: address some pylint warnings
* remove unused variables
* module description must precede import statements
* fix inconsistent return values

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-11-26 21:30:59 +01:00
Heinrich Schuchardt
7a001e0f3d sandbox: poweroff in efi_system_reset()
efi_system_reset() should exit if called with EFI_RESET_SHUTDOWN.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-26 21:30:59 +01:00
Heinrich Schuchardt
cd9a26bfe5 efi_loader: efi_disk_register() should not fail
Our algorithm for creating USB device paths may lead to duplicate device
paths which result in efi_disk_register() failing. Instead we should just
skip devices that cannot be registered as EFI block devices.

Fix a memory leak in efi_disk_add_dev() caused by the duplicate device
path.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-11-26 21:30:59 +01:00
Tom Rini
3f73e79de8 efi: Call bootm_disable_interrupts earlier in efi_exit_boot_services
If we look at the path that bootm/booti take when preparing to boot the
OS, we see that as part of (or prior to calling do_bootm_states,
explicitly) the process, bootm_disable_interrupts() is called prior to
announce_and_cleanup() which is where udc_disconnect() /
board_quiesce_devices() / dm_remove_devices_flags() are called from.  In
the EFI path, these are called afterwards.  In efi_exit_boot_services()
however we have been calling bootm_disable_interrupts() after the above
functions, as part of ensuring that we disable interrupts as required
by the spec.  However, bootm_disable_interrupts() is also where we go
and call usb_stop().  While this has been fine before, on the TI J721E
platform this leads us to an exception.  This exception seems likely to
be the case that we're trying to stop devices that we have already
disabled clocks for.  The most direct way to handle this particular
problem is to make EFI behave like the do_bootm_states() process and
ensure we call bootm_disable_interrupts() prior to ending up in
usb_stop().

Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Simon Glass <sjg@chromium.org>
Suggested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-11-26 21:30:59 +01:00
Tom Rini
1943f2a2a7 Merge branch '2021-11-23-scmi-and-tee-updates' into next
- A set of SCMI and TEE related updates
2021-11-23 16:24:24 -05:00
Etienne Carriere
48108f3a6a firmware: scmi: Add OP-TEE transport
This change implements an SCMI transport for agent interfacing the
OP-TEE SCMI service. OP-TEE provides an SCMI PTA (Pseudo-TA) for
non-secure world to send SCMI messages over an identified channel.
The driver implemented here uses a SMT shared memory for passing
messages between client and server.

The implementation opens and releases channel resources for each
passed SCMI message so that resources allocated (sessions) or
registered (shared memory areas) in OP-TEE firmware are released for
example before relocation as the driver will likely allocate/register
them back when probed after relocation.

The integration of the driver using dedicated config switch
CONFIG_SCMI_AGENT_OPTEE is designed on the model posted to the
U-Boot ML by Patrick Delaunay [1].

Link: [1] https://lore.kernel.org/all/20211028191222.v3.4.Ib2e58ee67f4d023823d8b5404332dc4d7e847277@changeid/
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Cc: Wolfgang Denk <wd@denx.de>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-11-23 13:54:43 -05:00
Etienne Carriere
fcb41d4db2 dt-bindings: arm: scmi: OP-TEE as transport channel for SCMI messages
Introduce compatible "linaro,scmi-optee" for SCMI transport channel
based on an OP-TEE service invocation.

Define "linaro,optee-channel-id" property to identify the OP-TEE SCMI
channel used by the protocol(s). OP-TEE SCMI transport can either use
shared memory or a static shared memory buffer identified by the DT.

These bindings were posted to the Linux kernel DT bindings mailing list
and acked by maintainer [1].

Link: [1] https://lore.kernel.org/linux-arm-kernel/20211029102118.GG6526@e120937-lin/T/
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-11-23 13:53:03 -05:00
Etienne Carriere
1442e9f330 tee: optee: define TEE error code TEE_ERROR_SHORT_BUFFER
Adds TEE_ERROR_SHORT_BUFFER as TEE error code. This error code is
commonly used by TEEs to inform caller that the buffer(s) it provided
is too small for the desired operation.

Cc: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-11-23 13:53:03 -05:00
Etienne Carriere
7c1a9b2eb9 tee: optee: remove unused duplicated login Id macros
Remove unused OPTEE_MSG_LOGIN_* ID macros as suitable TEE_LOGIN_* ID
macros are already defined tee.h.

Cc: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-11-23 13:53:03 -05:00
Etienne Carriere
1662ed0c1a tee: define session login identifiers
Define identifiers for clnt_login field in struct tee_open_session_arg
based in GlobalPlatform Device TEE IDs and on the REE_KERNEL identifier
extension from OP-TEE OS.

Cc: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-11-23 13:53:03 -05:00
Etienne Carriere
32190a959d firmware: scmi: smccc transport: simplify probe sequence
Minor simplification in scmi_smccc_probe() exit sequence.

Cc: Simon Glass <sjg@chromium.org>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-11-23 13:53:03 -05:00
Etienne Carriere
3de5aef451 firmware: scmi: smccc transport: use plat data, not priv data
Change SCMI smccc transport drivers to use platform data rather
than private data for channel reference since it only stores platform
data retrieved from the DT. Consequently the probe handler is replaced
with a of_to_plat handler.

Cc: Simon Glass <sjg@chromium.org>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-11-23 13:53:03 -05:00
Etienne Carriere
88a304f864 firmware: scmi: mailbox transport: use plat data, not priv data
Change SCMI mailbox transport drivers to use platform data rather
than private data for channel reference since it only stores platform
data retrieved from the DT. Consequently the probe handler is replaced
with a of_to_plat handler.

Cc: Simon Glass <sjg@chromium.org>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-11-23 13:53:03 -05:00
Etienne Carriere
7b4993907a firmware: scmi: mailbox transport: fix probe failure implementation
Correct scmi mailbox probe function that can't free the scmi channel
instance since its auto-allocated by the device model framework.

Cc: Simon Glass <sjg@chromium.org>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-11-23 13:53:03 -05:00
Etienne Carriere
5ddbbd1957 firmware: scmi: fix description of an API function
Correct inline comment describing API function devm_scmi_process_msg().

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-11-23 13:53:03 -05:00
Patrick Delaunay
7f6743d4f8 stm32mp15: deactivate CONFIG_SCMI_AGENT_MAILBOX
Deactivate the SCMI agent mailbox which is not used on STM32MP15
platforms.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-11-23 13:53:03 -05:00
Patrick Delaunay
73ead2bcc5 firmware: scmi: add configs to select the supported agents
Add two configs CONFIG_SCMI_AGENT_MAILBOX and CONFIG_SCMI_AGENT_SMCCC
to select the supported agents as all the agents are not supported.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-11-23 13:53:03 -05:00
Patrick Delaunay
d47c4fea8c power: regulator: scmi: define LOG_CATEGORY
Define LOG_CATEGORY to allow filtering with log command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2021-11-23 13:53:03 -05:00
Patrick Delaunay
31dc56fca5 clk: scmi: define LOG_CATEGORY
Define LOG_CATEGORY to allow filtering with log command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-11-23 13:53:03 -05:00
Patrick Delaunay
d96315411c reset: scmi: define LOG_CATEGORY
Define LOG_CATEGORY to allow filtering with log command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
2021-11-23 13:53:03 -05:00
Tom Rini
5a24e12f13 Merge branch 'next' of https://source.denx.de/u-boot/custodians/u-boot-net into next
- Various DSA additions
- bootp: fix for VCI string
- tsec: support for promiscuous mode
- add Aspeed MDIO driver
2021-11-23 07:43:50 -05:00
Samuel Holland
f11513d997 net: phy: realtek: Add tx/rx delay config for 8211e
Some boards need to change the tx/rx delay config in order for
gigabit Ethernet to work.

In Linux commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e rx/tx
delay config"), Realtek documented the bits for overriding the delays
from the hardware straps.

Copy the logic from linux, so the delay config is set from the PHY's
interface type (the phy-mode property in the device tree).

This removes the need for a one-off workaround for the Pine A64+ board.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2021-11-23 09:57:56 +02:00
Dylan Hung
8b41dedd40 drivers: net: add Aspeed MDIO driver
Add a driver for the MDIO interface for Aspeed AST2600 SOC.  The driver
only supports clause 22 for now.

Signed-off-by: Dylan Hung <dylan_hung@aspeedtech.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Ryan Chen <ryan_chen@aspeedtech.com>
2021-11-23 09:57:56 +02:00
Bin Meng
10aaefba52 net: tsec: Make redundant_init() static
redundant_init() is only called in the tsec driver. Make it static.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2021-11-23 09:57:56 +02:00
Bin Meng
04c350c337 net: fec_mxc: Declare 'promisc' as bool
priv->promisc is used as the parameter of the set_promisc() call
which accepts a bool type instead of char.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2021-11-23 09:57:56 +02:00
Bin Meng
c7ae46efdc net: dsa: Use true instead of 1 in the set_promisc() call
set_promisc() call accepts the parameter of a bool type. Make it
clear by using true instead of 1.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2021-11-23 09:57:56 +02:00
Peter Hoyes
d5ba6188df cmd: pxe_utils: Check fdtcontroladdr in label_boot
If using OF_CONTROL, fdtcontroladdr is set to the fdt used to configure
U-Boot. When using PXE, if no fdt is defined in the menu file, and
there is no fdt at fdt_addr, add fall back on fdtcontroladdr too.

We are developing board support for the Armv8r64 FVP using
config_distro_bootcmd. We are also using OF_BOARD and would like the
PXE boot option to default to the fdt provided by board_fdt_blob_setup.

Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
2021-11-23 09:57:56 +02:00
Walter Stoll
d4a660aafa net: bootp: Correct VCI string transmission
The VCI string sent during bootp of U-Boot-SPL is corrupt. This is
because the byte counter is not adjusted within the bootp_extended()
function when the VCI string is added. We fix this.

Signed-off-by: Walter Stoll <walter.stoll@duagon.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-23 09:57:56 +02:00
Vladimir Oltean
0997bb46aa configs: ls1021a-tsn: enable the generation of random Ethernet MAC addresses
Don't fail when booting a board with an empty EEPROM for MAC addresses.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-11-23 09:57:56 +02:00
Vladimir Oltean
0545e7f4ee configs: ls1021a-tsn: enable sja1105 switch driver
The sja1105 is a 5-port switch that uses a DM_DSA driver. Its 5th (CPU)
port is connected internally to the eth2 port of the LS1021A SoC.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-11-23 09:57:56 +02:00
Vladimir Oltean
39dd4f628f arm: dts: ls1021a-tsn: add sja1105 and eth2 bindings
The eth aliases are for correct probing order, so that each Ethernet
port will get a predictable MAC address from the environment.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2021-11-23 09:57:56 +02:00
Vladimir Oltean
7f7e73eee3 net: dsa: sja1105: add support for SGMII
The list of ports which support SGMII depending on switch generation is
available here:
https://www.kernel.org/doc/html/latest/networking/dsa/sja1105.html#port-compatibility-matrix

SGMII can either be used to connect to an external PHY or to the host
port. In the first case, the use of in-band autoneg is expected, in the
last, in-band autoneg is expected to be turned off (fixed-link). So the
driver supports both cases.

SGMII support means configuring the PCS and PMA. The PCS is a Synopsys
Designware XPCS, in Linux this has a separate driver but here it is
embedded within the sja1105 driver. If needed it can be taken out later,
although we would need a UCLASS_PCS for it, which we don't have atm.

Nonetheless, I did go all the way to export an internal MDIO bus for PCS
access, because it is nice to be able to debug the PCS through commands
such as:

=> mdio read ethernet-switch@1-pcs 4 1f.0
Reading from bus ethernet-switch@1-pcs
PHY at address 4:
31.0 - 0x1140

The internal MDIO bus is not registered with DM because there is no
udevice on it, as mentioned. But the XPCS code can still be ripped out,
as needed.

I did not add support for 2500base-x because I do not expect this
interface type to be used as a boot source for anybody, it would just
add unnecessary bloat.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2021-11-23 09:57:56 +02:00