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2020-03-17efi_loader: define OsIndicationsSupported flagsAKASHI Takahiro
These flags are expected to be set in OsIndicationsSupported variable if corresponding features are supported. See UEFI specification, section 8.5.4. In particular, capsule-related flags will be used in my capsule update patch. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Fix misspelled EFI_OS_INDICATIONS_BOOT_TO_FW_UI. Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-17cmd: bootefi: Parse reserved-memory node from DTAtish Patra
Currently, bootefi only parses memory reservation block to setup EFI reserved memory mappings. However, it doesn't parse the reserved-memory[1] device tree node that also can contain the reserved memory regions. Add capability to parse reserved-memory node and update the EFI memory mappings accordingly. 1. <U-Boot source>/doc/device-tree-bindings/reserved-memory/reserved-memory.txt] Signed-off-by: Atish Patra <atish.patra@wdc.com> Fix an endless loop. The /reserved-memory node may have children without reg property. Remove a superfluous debug statement. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-17cmd: map addresses to sysmem in efidebug memmapHeinrich Schuchardt
Addresses in the sandbox's device tree are in the sandbox's virtual address space. If we want to compare memory reservations in the device-tree with the output of 'efidebug memmap', we need to convert back to this address space. Adjust the output of the 'efidebug memmap' command. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-17efi_loader: create reservations after ft_board_setupHeinrich Schuchardt
Some memory reservations are made in ft_board_setup(). Ensure that we create reserved memory map entries after ft_board_setup(). The downside of this patch is that if bootefi is called multiple times with an devicetree argument superfluous reservations for the old copies of the device tree will exist. But that is still better than missing a reservation. Deleting the superfluous reservations is not possible because reservations in the memory map are rounded to page size and may be coallesced. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-16Merge https://gitlab.denx.de/u-boot/custodians/u-boot-marvellTom Rini
- Fix timer wrap (Chris) - Use dev_read only if OF_PLATDATA is not enabled (Walter)
2020-03-16watchdog: Handle timer wrap aroundChris Packham
On some platforms/architectures the value from get_timer() can wrap. This is particularly problematic when long-running code needs to measure a time difference as is the case with watchdog_reset() which tries to avoid tickling the watchdog too frequently. Use time_after() from time.h instead of a plain > comparison to avoid any issues with the time wrapping on a system that has been sitting in u-boot for a long time. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de>
2020-03-16watchdog: Use dev_read only if OF_PLATDATA is not enabledWalter Lozano
Currently watchdog tries to use dev_read_u32_default to get timeout configuration in case OF_CONTROL is enabled. However, if SPL is built with OF_PLATDATA this has no sense as there is no device tree. This patch fixes this issue by only use dev_read_u32_default if OF_CONTROL is enabled but OF_PLATDATA is not. Signed-off-by: Walter Lozano <walter.lozano@collabora.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-03-13Merge branch '2020-03-13-master-imports'Tom Rini
- Address the regression with the 'gpio' command - Fix mcfuart regression - Other minor fixes
2020-03-13MAINTAINERS: update entry for ARM STIPatrice Chotard
Add STi drivers/include files and git tree. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2020-03-13fit: check return value of fit_image_get_data_size()Heinrich Schuchardt
GCC-10 reports: In file included from tools/common/image-fit.c:1: include/image.h: In function ‘fit_image_get_data_and_size’: ./tools/../common/image-fit.c:1015:9: warning: ‘len’ may be used uninitialized in this function [-Wmaybe-uninitialized] 1015 | *size = len; | ~~~~~~^~~~~ ./tools/../common/image-fit.c:996:6: note: ‘len’ was declared here 996 | int len; | ^~~ Add the missing check of the return value of fit_image_get_data_size(). Fixes: c3c863880479 ("add FIT data-position & data-offset property support") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
2020-03-13watchdog: Align Kconfig propertiesMichal Simek
Just cleanup help indentation to be the same for all options. It means <tab><space><space> indentation. OMAP3 should be indented by tabs which is also fixed. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-03-13cmd: gpio: Make `gpio input` return pin value againAlex Kiernan
4dbc107f4683 ("cmd: gpio: Correct do_gpio() return value") correctly changed the behaviour of the gpio command to return CMD_RET_SUCCESS or CMD_RET_FAILURE, but any existing script which expects the return value to be the pin value is broken by this change. Reinstate the legacy behaviour for `gpio input` only. Fixes: 4dbc107f4683 ("cmd: gpio: Correct do_gpio() return value") Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com> Signed-off-by: Alex Kiernan <alex.kiernan@hivehome.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-03-13Makefile: doesn't need check stack size when dtb is not builtAKASHI Takahiro
The commit 5fed97af20da ("Makefile: ensure DTB doesn't overflow into initial stack") adds an extra check for stack size in BSS if CONFIG_SYS_INIT_SP_BSS_OFFSET is enabled. This check, however, doesn't make sense under the configuration where control dtb won't be built in and it should be void in such cases. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Fixes: 5fed97af20da ("Makefile: ensure DTB doesn't overflow into initial stack") Reviewed-by: Stephen Warren <swarren@nvidia.com>
2020-03-13serial: mcfuart: renaming to a more appropriate nameAngelo Durgehello
All drivers seems to align now to serial_xxx maning, so, aligning also this driver, to allow to be found easily. Signed-off-by: Angelo Durgehello <angelo.dureghello@timesys.com>
2020-03-13serial: mcfuart: fix uart port indexAngelo Durgehello
Actually, using dev->seq value before probe to deduce the current serial port index leads to reading an invalid seq value (-1). So, getting dev->seq at probe time. Signed-off-by: Angelo Durgehello <angelo.dureghello@timesys.com>
2020-03-12Merge tag 'efi-2020-04-rc4-3' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-efi Pull request for UEFI sub-system for efi-2020-04-rc4 (3) This pull request provides the hardware RNG driver for Amlogic systems needed for the EFI_RNG_PROTOCOL. Furthermore bug fixes are provided: * correct an error message in the efidebug command * correct an error in the 'efidebug rm' command * remove an unnecessary assignment in efi_queue_event()
2020-03-12Merge tag 'u-boot-stm32-20200310' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-stm - stm32mp: fix dependency for CONFIG_STM32_ETZPC
2020-03-11drivers/rng: add Amlogic hardware RNG driverHeinrich Schuchardt
Add support for the hardware random number generator of Amlogic SOCs. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-03-11drivers/rng: simplify KconfigHeinrich Schuchardt
For all sandbox systems with DM_RNG we enable RNG_SANDBOX. So we can simply set the default to yes. All rng drivers depend on DM_RNG. Use a single 'if' instead of individual dependencies. Now 'make menuconfig' shows the individual drivers neatly indented under the DM_RNG entry. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-03-11efi_loader: unnecessary assignment in efi_queue_eventHeinrich Schuchardt
The assigned value NULL is never used. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-11cmd: efidebug: correct error messageHeinrich Schuchardt
Add the missing line feed at the error message if the variable referred to by 'efidebug boot rm' does not exist. Shorten the format string by using the variable name instead of the number of the boot variable. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-11cmd: efidebug: fix a failure of "boot rm" sub-commandAKASHI Takahiro
There is a wrong usage of utf8_utf16_strncpy() in "boot rm" command, and then it will end up with a failure of this command due to a wrong value of an interim variable ("var_name16"). Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-11efi_loader: get_memory_map: return parameters whenever possibleAKASHI Takahiro
Currently, if GetMemoryMap API returns EFI_BUFFER_TOO_SMALL, it doesn't set valid values to other parameters, descriptor_size and descriptor_version, except memory_map_size. Some efi applications, however, may use those value; in particular, xen uses descriptor_size to calculate a size of buffer to be allocated. While UEFI specification is ambiguous in this point, it would be better to address this issue proactively to maximize the compatibility with existing efi applications. With this patch, for example, xen.efi (and hence linux kernel) can be started via bootefi without modification. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-03-10Merge tag 'mmc-2020-3-9' of https://gitlab.denx.de/u-boot/custodians/u-boot-mmcTom Rini
- DM support for CAxxxx SoCs - eMMC board for presidio-asic - Add defer probe for mmc sdhci - TI SoCs mmc misc update
2020-03-10arm: mediatek: remove unused binman configSam Shih
The binman-option BINMAN_FDT is introduced by this commit: commit 3c10dc95bdd0 ("binman: Add a library to access binman entries") BINMAN_FDT being selected when BINMAN=y that resulting in mt7623 and mt7622 are unable to boot. The root cause of this issue is commit: commit cbd2fba1eca1 ("arm: MediaTek: add basic support for MT7629 boards") select BINMAN=y in all mediatek SoCs, and others mediatek SoCs not expect to use BINMAN_FDT. This patch remove BINMAN=y option when ARCH_MEDIATEK=y and move this to the specify SoCs part config. Signed-off-by: Sam Shih <sam.shih@mediatek.com> Tested-by: Frank Wunderlich <frank-w@public-files.de>
2020-03-10power-domain: fix hang in endless loop on i.MX8Anatolij Gustschin
Currently when booting the kernel on i.MX8 U-Boot hangs in an endless loop when switching off dma, connectivity or lsio power domains during device removal. It hapens first when removing gpio0 (gpio@5d080000) device, here its power domain device 'lsio_gpio0' is obtained for switching off power. Since the obtained 'lsio_gpio0' device is removed afterwards, its power domain is also switched off and here the parent power domain device 'lsio_power_domain' is optained for switching off the power. Thereafter, when the obtained 'lsio_power_domain' is removed, device_remove() removes its first child 'lsio_gpio0'. During this child removal the 'lsio_power_domain' device is obtained again for switching and when removing it later, the same child removal is repeated, so we are stuck in an endless loop. Below is a snippet from dm tree on i.MX8QXP for better illustration of the DM devices relationship: Class Index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver ... simple_bus 0 [ + ] generic_simple_bus |-- imx8qx-pm power_doma 0 [ + ] imx8_power_domain | |-- lsio_power_domain power_doma 1 [ + ] imx8_power_domain | | |-- lsio_gpio0 power_doma 2 [ + ] imx8_power_domain | | |-- lsio_gpio1 Do not remove a power domain device if it is a parent of the currently controlled device. Fixes: 52edfed65de9 ("dm: core: device: switch off power domain after device removal") Signed-off-by: Anatolij Gustschin <agust@denx.de> Reported-by: Oliver Graute <oliver.graute@gmail.com> Reported-by: Fabio Estevam <festevam@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Fabio Estevam <festevam@gmail.com>
2020-03-10Merge tag 'u-boot-imx-20200310' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-imx Fixes for 2020.04 ----------------- - DM : mx6sabresd - mx6ul_14x14_evk: fix video - mx8qxp; fix console for booting - sync DTS with kernel (imx6sx) - drop obsolete woodburn (mx35) Travis: https://travis-ci.org/sbabic/u-boot-imx/builds/660550811
2020-03-10Merge tag 'u-boot-atmel-fixes-2020.04-a' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-atmel First set of u-boot-atmel fixes for 2020.04 cycle: - Includes two small configuration fixes that will solve the SPL booting on sama5d3_xplained board.
2020-03-10stm32mp: update dependency for STM32_ETZPCPatrick Delaunay
Correct the dependency for STM32 ETZPC protection, linked to SOC STM32MP identified by CONFIG_STM32MP15x and not linked to CONFIG_TARGET_STM32MP1 (no more existing). This patch fix an issue introduced by commit 846254888e2e ("stm32mp1: split board and SOC support for STM32MP15x family"). Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Acked-by: Patrice Chotard <patrice.chotard@st.com>
2020-03-10Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-netTom Rini
2020-03-10mx6slevk: Convert to DM_ETHPedro Jardim
This fixes the following warning: ===================== WARNING ====================== This board does not use CONFIG_DM_ETH (Driver Model for Ethernet drivers). Please update the board to use CONFIG_DM_ETH before the v2020.07 release. Failure to update by the deadline may result in board removal. See doc/driver-model/migration.rst for more info. ==================================================== Signed-off-by: Pedro Jardim <jardim.c.pedro@gmail.com> Reviewed-by: Fabio Estevam <festevam@gmail.com>
2020-03-10mx6sabreauto: Convert to DM_ETHPedro Jardim
This fixes the following warning: ===================== WARNING ====================== This board does not use CONFIG_DM_ETH (Driver Model for Ethernet drivers). Please update the board to use CONFIG_DM_ETH before the v2020.07 release. Failure to update by the deadline may result in board removal. See doc/driver-model/migration.rst for more info. ==================================================== Signed-off-by: Pedro Jardim <jardim.c.pedro@gmail.com> Reviewed-by: Fabio Estevam <festevam@gmail.com>
2020-03-10mx7dsabresd: Boot in non secure by defaultFabio Estevam
Booting a mainline kernel in secure mode on i.MX7D causes only one CPU to be brought up. Change it to booting in non secure mode by default, which allows the two CPUs to be brought up. It does have a side effect of not probing the CAAM driver. If CAAM driver is needed then a secure world OS such as OPTEE needs to be used. Signed-off-by: Fabio Estevam <festevam@gmail.com>
2020-03-10imx: imx8qm: enable relocation of fdt and initrdOliver Graute
Set CONFIG_SYS_BOOTMAPSZ to the amount of memory available which is needed to relocate the kernel, device tree and initrd. Remove 'fdt_high' and 'initrd_high' environment variables from default environment which prevents relocation of FDT and initrd. Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: Peng Fan <peng.fan@nxp.com> Cc: Simon Glass <sjg@chromium.org> Cc: Ye Li <ye.li@nxp.com> Cc: uboot-imx <uboot-imx@nxp.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2020-03-10arm: dts: imx8mq-evk: add phy-reset-gpios for fec1Alifer Moraes
Instead of resetting the ethernet phy through functions in imx8mq_evk.c, let the driver reset the phy via dts description adding a reset duration of 10 ms following atheros 8031's datasheet recommendation. Signed-off-by: Alifer Moraes <alifer.wsdm@gmail.com>
2020-03-10mx6sabresd: Convert ethernet to driver modelAlifer Moraes
Convert imx6sabresd ethernet to driver model to fix the following warning: ===================== WARNING ====================== This board does not use CONFIG_DM_ETH (Driver Model for Ethernet drivers). Please update the board to use CONFIG_DM_ETH before the v2020.07 release. Failure to update by the deadline may result in board removal. See doc/driver-model/migration.rst for more info. ==================================================== Signed-off-by: Alifer Moraes <alifer.wsdm@gmail.com> Reviewed-by: Fabio Estevam <festevam@gmail.com>
2020-03-10board: sama5d3_xplained: Fix uboot size when loaded from NAND by SPLFabien Lehoussel
Uboot size is incorrect. Uboot SPL use CONFIG_SYS_MONITOR_LEN to read uboot from NAND : 0x80000 With sama5d3_xplained_nandflash_defconfig : u-boot.bin size is ~800Ko 0xC0000 So I increased size to 1MB : 0x100000 Signed-off-by: Fabien Lehoussel <fabien.lehoussel@medianesysteme.com>
2020-03-10board: sama5d3_xplained: Fix SPL DTB read from NANDFabien Lehoussel
SPL boot cannot find dtb if CONFIG_SPL_SEPARATE_BSS is disabled : CONFIG_SPL_SEPARATE_BSS=n RomBOOT <debug_uart> Missing DTB ### ERROR ### Please RESET the board ### RomBOOT CONFIG_SPL_SEPARATE_BSS=y RomBOOT <debug_uart> U-Boot SPL 2019.04-linux4sam_6.2-icp-dirty (Feb 24 2020 - 15:34:35 +0100) Trying to boot from NAND <debug_uart> Signed-off-by: Fabien Lehoussel <fabien.lehoussel@medianesysteme.com>
2020-03-09net: phy: marvell: Unify 88E151x series phy_driverClemens Gruber
The PHY models of the Marvell 88E151x series are not reliably distinguishable by their uid / PHY identifiers. The 88E1510, 88E1512, 88E1514 and 88E1518 all have the same OUI and model number and bits 3:0 in the PHY Identifier 2 (Page 0, Reg 3) are described as HW revision number, but both 88E1510 and 88E1518 PHYs were observed with the same HW rev number (1). Before commit 83cfbeb0df9f ("net: phy: Fix mask so that we can identify Marvell 88E1518"), the 88E151x were detected because the HW revision bits were masked from the uid. After that change, 88E1510/12/18 were all detected as 88E1518 and the 88E1510 specific code was no longer run. I modified the mask to again ignore all four HW revision bits, removed the 88E1510 specific code (board-specific LED/INTn setup), which was not called since late 2016 anyway and renamed the config function and phy_driver struct to the better fitting 88e151x. The uid and mask bits 3:0 are now again the same as in the Linux kernel. Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
2020-03-09net: tftp: use correct printf codesHeinrich Schuchardt
When printing unsigned numbers use %u. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09net: phy: dp83867: Add SGMII mode type switchingMichal Simek
This patch adds ability to switch beetween two PHY SGMII modes. Some hardware, for example, FPGA IP designs may use 6-wire mode which enables differential SGMII clock to MAC. Patch description, dt flags have been done in mainline Linux by commit a2111c460c0c ("net: phy: dp83867: Add documentation for SGMII mode type") and by commit 507ddd5c0d47 ("net: phy: dp83867: Add SGMII mode type switching") Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09dt-bindings: net: dp83867: Remove binding doc from U-Boot treeMichal Simek
U-Boot is having DT which doesn't cover all options currently supported by driver. DT binding is aligned with Linux kernel version available here. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/net/ti,dp83867.txt Based on my talk with Grygorii Strashko better will be to remove it. Also Linux kernel bindings are being converted to yaml that's another reason to do it only at one place. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
2020-03-09net: phy: add XFI, USXGMII types to is_10g_interface() helperAlex Marginean
The helper is used to reset PHYs on connect and it determines the clause to use (C22/C45) based on interface type. This fixes 'PHY reset timed out' warnings in console for USXGMII/XFI PHYs. Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09net: phy: Fix overlong PHY timeoutAndre Przywara
Commit 27c3f70f3b50 ("net: phy: Increase link up delay in genphy_update_link()") increased the per-iteration waiting time from 1ms to 50ms, without adjusting the timeout counter. This lead to the timeout increasing from the typical 4 seconds to over three minutes. Adjust the timeout counter evaluation by that factor of 50 to bring the timeout back to the intended value. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Fixes: net: phy: Increase link up delay in genphy_update_link() ("27c3f70f3b50") Reviewed-by: Stefan Roese <sr@denx.de> Tested-by: Matthias Brugger <mbrugger@suse.com> Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09doc: net: Rewrite network driver documentationAndre Przywara
doc/README.drivers.eth seems like a good source for understanding U-Boot's network subsystem, but is only talking about legacy network drivers. This is particularly sad as proper documentation would help in porting drivers over to the driver model. Rewrite the document to describe network drivers in the new driver model world. Most driver callbacks/methods are almost identical in their semantic, but recv() differs in some important details. Also keep some parts of the original text at the end, to help understanding old drivers. Add some hints on how to port drivers over. This also uses the opportunity to reformat the document in reST, on the way moving it into doc/driver-model and adding it into the structure there. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09drivers: net: phy: aquantia: make it less verboseAlex Marginean
The driver now unconditionally prints some information that's not universally useful. Replace printf with debug. Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com> Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09drivers: net: phy: aquantia: drop XGMII as a valid system interface protoAlex Marginean
Use either USXGMII or XFI in aquantia_set_proto and drop XGMII as a valid protocol configuration. The PHY doesn't support it, it's just used as an alias for one of the other two protocols. Signed-off-by: Florin Chiculita <florinlaurentiu.chiculita@nxp.com> Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com> Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09env: Update env_addr for mmc environment driverPankit Garg
Make sure the gd struct is up-to-date. Signed-off-by: Pankit Garg <pankit.garg@nxp.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09phy: Include NC-SI in phy setupSamuel Mendoza-Jonas
Add NC-SI to the usual phy handling. This makes two notable changes: - Somewhat similar to a fixed phy, phy_connect() will create an NC-SI phy if CONFIG_PHY_NCSI is defined. - An early return is added to phy_read() and phy_write() to handle a case like the NC-SI phy which does not define a bus. Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09phy: Add support for the NC-SI protocolSamuel Mendoza-Jonas
This introduces support for the NC-SI protocol, modelled as a phy driver for other ethernet drivers to consume. NC-SI (Network Controller Sideband Interface) is a protocol to manage a sideband connection to a proper network interface, for example a BMC (Baseboard Management Controller) sharing the NIC of the host system. Probing and configuration occurs by communicating with the "remote" NIC via NC-SI control frames (Ethernet header 0x88f8). This implementation is roughly based on the upstream Linux implementation[0], with a reduced feature set and an emphasis on getting a link up as fast as possible rather than probing the full possible topology of the bus. The current phy model relies on the network being "up", sending NC-SI command frames via net_send_packet() and receiving them from the net_loop() loop (added in a following patch). The ncsi-pkt.h header[1] is copied from the Linux kernel for consistent field definitions. [0]: https://github.com/torvalds/linux/tree/master/net/ncsi [1]: https://github.com/torvalds/linux/blob/master/net/ncsi/ncsi-pkt.h Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
generated by cgit (git 2.34.1) at 2024-12-25 13:29:36 +0000