linux

treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-05-19 13:07:45 +01:00

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!

2005-04-16 15:20:36 -07:00

docs: kbuild: convert docs to ReST and rename to *.rst The kbuild documentation clearly shows that the documents there are written at different times: some use markdown, some use their own peculiar logic to split sections. Convert everything to ReST without affecting too much the author's style and avoiding adding uneeded markups. The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>

2019-06-12 14:52:48 -03:00

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!

2005-04-16 15:20:36 -07:00

firmware: arm_scmi: Make SCMI transports configurable Add configuration options to be able to select which SCMI transports have to be compiled into the SCMI stack. Mailbox and SMC are by default enabled if their related dependencies are satisfied. While doing that move all SCMI related config options in their own dedicated submenu. Link: https://lore.kernel.org/r/20210803131024.40280-9-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

2021-08-03 14:10:17 +01:00

firmware: arm_scmi: add device power domain support using genpd This patch hooks up the support for device power domain provided by SCMI using the Linux generic power domain infrastructure. Cc: Kevin Hilman <khilman@baylibre.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

2017-06-14 13:48:26 +01:00

firmware: add support for ARM System Control and Power Interface(SCPI) protocol This patch adds support for System Control and Power Interface (SCPI) Message Protocol used between the Application Cores(AP) and the System Control Processor(SCP). The MHU peripheral provides a mechanism for inter-processor communication between SCP's M3 processor and AP. SCP offers control and management of the core/cluster power states, various power domain DVFS including the core/cluster, certain system clocks configuration, thermal sensors and many others. This protocol driver provides interface for all the client drivers using SCPI to make use of the features offered by the SCP. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Jon Medhurst (Tixy) <tixy@linaro.org> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Liviu Dudau <Liviu.Dudau@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

2015-03-30 10:59:52 +01:00

firmware: arm_scpi: Add hardware dependencies With a name like that, I assume that the ARM SCPI protocol is only useful on the ARM architectures. Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Cc: Jon Medhurst (Tixy) <tixy@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>

2017-01-30 09:52:01 +01:00

firmware: arm_scpi: make it depend on MAILBOX instead of ARM_MHU ARM_SCPI_PROTOCOL can be used with any mailbox and not just ARM MHU mailbox controller. This patch drops it's dependency on ARM_MHU and make it depend on just mailbox framework. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

2016-06-05 18:23:21 +01:00

firmware: add support for ARM System Control and Power Interface(SCPI) protocol This patch adds support for System Control and Power Interface (SCPI) Message Protocol used between the Application Cores(AP) and the System Control Processor(SCP). The MHU peripheral provides a mechanism for inter-processor communication between SCP's M3 processor and AP. SCP offers control and management of the core/cluster power states, various power domain DVFS including the core/cluster, certain system clocks configuration, thermal sensors and many others. This protocol driver provides interface for all the client drivers using SCPI to make use of the features offered by the SCP. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Jon Medhurst (Tixy) <tixy@linaro.org> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Liviu Dudau <Liviu.Dudau@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

2015-03-30 10:59:52 +01:00

firmware: fix a spelling mistake "managament" -> "management" in Kconfig There is a spelling mistake in the Kconfig help text. Fix it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20201204192250.1151316-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-12-04 19:22:50 +00:00

firmware: add support for ARM System Control and Power Interface(SCPI) protocol This patch adds support for System Control and Power Interface (SCPI) Message Protocol used between the Application Cores(AP) and the System Control Processor(SCP). The MHU peripheral provides a mechanism for inter-processor communication between SCP's M3 processor and AP. SCP offers control and management of the core/cluster power states, various power domain DVFS including the core/cluster, certain system clocks configuration, thermal sensors and many others. This protocol driver provides interface for all the client drivers using SCPI to make use of the features offered by the SCP. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Jon Medhurst (Tixy) <tixy@linaro.org> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Liviu Dudau <Liviu.Dudau@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

2015-03-30 10:59:52 +01:00

firmware: arm_sdei: Add driver for Software Delegated Exceptions The Software Delegated Exception Interface (SDEI) is an ARM standard for registering callbacks from the platform firmware into the OS. This is typically used to implement firmware notifications (such as firmware-first RAS) or promote an IRQ that has been promoted to a firmware-assisted NMI. Add the code for detecting the SDEI version and the framework for registering and unregistering events. Subsequent patches will add the arch-specific backend code and the necessary power management hooks. Only shared events are supported, power management, private events and discovery for ACPI systems will be added by later patches. Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

2018-01-08 15:38:09 +00:00

drivers/firmware: add SDEI cross-CPU NMI service for arm64 Deliver an NMI-like event to an interrupt-masked arm64 CPU via the standard SDEI software-signalled event (event 0), without the pseudo-NMI hot-path cost: register a handler for event 0 and poke a target with sdei_event_signal(0, mpidr). First user is arch_trigger_cpumask_backtrace() (sysrq-l, RCU stalls, hung-task/soft-lockup dumps), which otherwise rides an IPI that can't reach a masked CPU. Falls back to the IPI path when SDEI is absent; no watchdog backend yet, so the stock detector is untouched. Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Yin Fengwei <fengwei_yin@linux.alibaba.com> Signed-off-by: Will Deacon <will@kernel.org>

2026-06-29 16:07:17 +01:00

arm64: escalate smp_send_stop() to an SDEI NMI as a last resort A CPU wedged with interrupts masked ignores the stop IPI, and without pseudo-NMI there is no NMI IPI to escalate to: a reboot proceeds with the CPU still running, and a kdump misses its registers. Add a third rung to smp_send_stop(): once the IPI (and pseudo-NMI IPI, if enabled) rungs have run, signal SDEI event 0 at whatever stayed online. Firmware delivers it regardless of the target's DAIF, so it reaches a CPU a plain IPI cannot; the target acks by going offline, which the caller already polls for. Fold the stop bookkeeping into one arm64_nmi_cpu_stop(regs, die_on_crash), shared by the stop IPI handlers, panic_smp_self_stop() and the SDEI handler, replacing the near-duplicate local_cpu_stop() and ipi_cpu_crash_stop(). @die_on_crash is the only difference: the IPI handlers pass true and PSCI CPU_OFF the CPU on a crash stop so a capture kernel can reclaim it; the SDEI handler and self-stop pass false and park. The SDEI park is required, not conservative -- its handler runs inside an SDEI event that is never completed (completing it resumes the wedged context), and a CPU_OFF from that unfinished-event context wedges EL3 on some firmware (left as a follow-up). The dump is unaffected; only re-onlining the CPU in an SMP capture kernel is lost. Suggested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Yin Fengwei <fengwei_yin@linux.alibaba.com> Signed-off-by: Will Deacon <will@kernel.org>

2026-06-29 16:07:18 +01:00

drivers/firmware: add SDEI cross-CPU NMI service for arm64 Deliver an NMI-like event to an interrupt-masked arm64 CPU via the standard SDEI software-signalled event (event 0), without the pseudo-NMI hot-path cost: register a handler for event 0 and poke a target with sdei_event_signal(0, mpidr). First user is arch_trigger_cpumask_backtrace() (sysrq-l, RCU stalls, hung-task/soft-lockup dumps), which otherwise rides an IPI that can't reach a masked CPU. Falls back to the IPI path when SDEI is absent; no watchdog backend yet, so the stock detector is untouched. Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Yin Fengwei <fengwei_yin@linux.alibaba.com> Signed-off-by: Will Deacon <will@kernel.org>

2026-06-29 16:07:17 +01:00

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!

2005-04-16 15:20:36 -07:00

[PATCH] EDD isn't EXPERIMENTAL anymore Lots of people use this. Apparently RH has for over 18 months so lets drop EXPERIMENTAL. Signed-off-by: Chris Wedgwood <cw@f00f.org> Cc: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-06-25 05:47:46 -07:00

firmware: only allow EDD on x86 Rather than have the EDD depend on !ia64 (and assuming that only ia64, x86, x86_64 will be including this Kconfig), have EDD depend on the only arches which can support this code. This should allow all other arches to cleanly include the firmware Kconfig. Also simplify the x86 string used by FIRMWARE_MEMMAP to match EDD. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2009-12-14 18:01:16 -08:00

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!

2005-04-16 15:20:36 -07:00

edd: add default mode CONFIG_EDD_OFF=n, override with edd={on,off} Add a kernel parameter option to 'edd' to enable/disable BIOS Enhanced Disk Drive Services. CONFIG_EDD_OFF disables EDD while still compiling EDD into the kernel. Default behavior can be forced using 'edd=on' or 'edd=off' as a kernel parameter. [akpm@linux-foundation.org: fix kernel-parameters.txt] Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Matt Domsch <Matt_Domsch@dell.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2008-04-29 01:02:45 -07:00

sysfs: add /sys/firmware/memmap This patch adds /sys/firmware/memmap interface that represents the BIOS (or Firmware) provided memory map. The tree looks like: /sys/firmware/memmap/0/start (hex number) end (hex number) type (string) ... /1/start end type With the following shell snippet one can print the memory map in the same form the kernel prints itself when booting on x86 (the E820 map). --------- 8< -------------------------- #!/bin/sh cd /sys/firmware/memmap for dir in * ; do start=$(cat $dir/start) end=$(cat $dir/end) type=$(cat $dir/type) printf "%016x-%016x (%s)\n" $start $[ $end +1] "$type" done --------- >8 -------------------------- That patch only provides the needed interface: 1. The sysfs interface. 2. The structure and enumeration definition. 3. The function firmware_map_add() and firmware_map_add_early() that should be called from architecture code (E820/EFI, for example) to add the contents to the interface. If the kernel is compiled without CONFIG_FIRMWARE_MEMMAP, the interface does nothing without cluttering the architecture-specific code with #ifdef's. The purpose of the new interface is kexec: While /proc/iomem represents the *used* memory map (e.g. modified via kernel parameters like 'memmap' and 'mem'), the /sys/firmware/memmap tree represents the unmodified memory map provided via the firmware. So kexec can: - use the original memory map for rebooting, - use the /proc/iomem for setting up the ELF core headers for kdump case that should only represent the memory of the system. The patch has been tested on i386 and x86_64. Signed-off-by: Bernhard Walle <bwalle@suse.de> Acked-by: Greg KH <gregkh@suse.de> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: kexec@lists.infradead.org Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>

2008-06-27 13:12:54 +02:00

kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option is used to configure any non-standard kernel with a much larger scope than only small devices. This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes references to the option throughout the kernel. A new CONFIG_EMBEDDED option is added that automatically selects CONFIG_EXPERT when enabled and can be used in the future to isolate options that should only be considered for embedded systems (RISC architectures, SLOB, etc). Calling the option "EXPERT" more accurately represents its intention: only expert users who understand the impact of the configuration changes they are making should enable it. Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: David Woodhouse <david.woodhouse@intel.com> Signed-off-by: David Rientjes <rientjes@google.com> Cc: Greg KH <gregkh@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Robin Holt <holt@sgi.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2011-01-20 14:44:16 -08:00

firmware: only allow EDD on x86 Rather than have the EDD depend on !ia64 (and assuming that only ia64, x86, x86_64 will be including this Kconfig), have EDD depend on the only arches which can support this code. This should allow all other arches to cleanly include the firmware Kconfig. Also simplify the x86 string used by FIRMWARE_MEMMAP to match EDD. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2009-12-14 18:01:16 -08:00

sysfs: add /sys/firmware/memmap This patch adds /sys/firmware/memmap interface that represents the BIOS (or Firmware) provided memory map. The tree looks like: /sys/firmware/memmap/0/start (hex number) end (hex number) type (string) ... /1/start end type With the following shell snippet one can print the memory map in the same form the kernel prints itself when booting on x86 (the E820 map). --------- 8< -------------------------- #!/bin/sh cd /sys/firmware/memmap for dir in * ; do start=$(cat $dir/start) end=$(cat $dir/end) type=$(cat $dir/type) printf "%016x-%016x (%s)\n" $start $[ $end +1] "$type" done --------- >8 -------------------------- That patch only provides the needed interface: 1. The sysfs interface. 2. The structure and enumeration definition. 3. The function firmware_map_add() and firmware_map_add_early() that should be called from architecture code (E820/EFI, for example) to add the contents to the interface. If the kernel is compiled without CONFIG_FIRMWARE_MEMMAP, the interface does nothing without cluttering the architecture-specific code with #ifdef's. The purpose of the new interface is kexec: While /proc/iomem represents the *used* memory map (e.g. modified via kernel parameters like 'memmap' and 'mem'), the /sys/firmware/memmap tree represents the unmodified memory map provided via the firmware. So kexec can: - use the original memory map for rebooting, - use the /proc/iomem for setting up the ELF core headers for kdump case that should only represent the memory of the system. The patch has been tested on i386 and x86_64. Signed-off-by: Bernhard Walle <bwalle@suse.de> Acked-by: Greg KH <gregkh@suse.de> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: kexec@lists.infradead.org Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>

2008-06-27 13:12:54 +02:00

DMI-based module autoloading The patch below adds DMI/SMBIOS based module autoloading to the Linux kernel. The idea is to load laptop drivers automatically (and other drivers which cannot be autoloaded otherwise), based on the DMI system identification information of the BIOS. Right now most distros manually try to load all available laptop drivers on bootup in the hope that at least one of them loads successfully. This patch does away with all that, and uses udev to automatically load matching drivers on the right machines. Basically the patch just exports the DMI information that has been parsed by the kernel anyway to userspace via a sysfs device /sys/class/dmi/id and makes sure that proper modalias attributes are available. Besides adding the "modalias" attribute it also adds attributes for a few other DMI fields which might be useful for writing udev rules. This patch is not an attempt to export the entire DMI/SMBIOS data to userspace. We already have "dmidecode" which parses the complete DMI info from userspace. The purpose of this patch is machine model identification and good udev integration. To take advantage of DMI based module autoloading, a driver should export one or more MODULE_ALIAS fields similar to these: MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*"); MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*"); MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*"); MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*"); These lines are specific to my msi-laptop.c driver. They are basically just a concatenation of a few carefully selected DMI fields with all potentially bad characters stripped. Besides laptop drivers, modules like "hdaps", the i2c modules and the hwmon modules are good candidates for "dmi:" MODULE_ALIAS lines. Besides merely exporting the DMI data via sysfs the patch adds support for a few more DMI fields. Especially the CHASSIS fields are very useful to identify different laptop modules. The patch also adds working MODULE_ALIAS lines to my msi-laptop.c driver. I'd like to thank Kay Sievers for helping me to clean up this patch for posting it on lkml. Patch is against Linus' current GIT HEAD. Should probably apply to older kernels as well without modification. Signed-off-by: Lennart Poettering <mzxreary@0pointer.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2007-05-08 22:07:02 +02:00

firmware: Basic dmi-sysfs support Introduce a new module "dmi-sysfs" that exports the broken out entries of the DMI table through sysfs. Entries are enumerated via dmi_walk() on module load, and are populated as kobjects rooted at /sys/firmware/dmi/entries. Entries are named "<type>-<instance>", where: <type> : is the type of the entry, and <instance> : is the ordinal count within the DMI table of that entry type. This instance is used in lieu the DMI entry's handle as no assurances are made by the kernel that handles are unique. All entries export the following attributes: length : The length of the formatted portion of the entry handle : The handle given to this entry by the firmware raw : The raw bytes of the entire entry, including the formatted portion, the unformatted (strings) portion, and the two terminating nul characters. type : The DMI entry type instance : The ordinal instance of this entry given its type. position : The position ordinal of the entry within the table in its entirety. Entries in dmi-sysfs are kobject backed members called "struct dmi_sysfs_entry" and belong to dmi_kset. They are threaded through entry_list (protected by entry_list_lock) so that we can find them at cleanup time. Signed-off-by: Mike Waychison <mikew@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-02-22 17:53:21 -08:00

firmware/dmi_scan: generalize for use by other archs This patch makes a couple of changes to the SMBIOS/DMI scanning code so it can be used on other archs (such as ARM and arm64): (a) wrap the calls to ioremap()/iounmap(), this allows the use of a flavor of ioremap() more suitable for random unaligned access; (b) allow the non-EFI fallback probe into hardcoded physical address 0xF0000 to be disabled. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Grant Likely <grant.likely@linaro.org> Cc: Ingo Molnar <mingo@elte.hu> Cc "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2014-01-23 15:54:39 -08:00

2008-04-09 19:50:41 -07:00

iscsi_ibft: make ISCSI_IBFT dependson ACPI instead of ISCSI_IBFT_FIND iscsi_ibft can use ACPI to find the iBFT entry during bootup, currently, ISCSI_IBFT depends on ISCSI_IBFT_FIND which is a X86 legacy way to find the iBFT by searching through the low memory. This patch changes the dependency so that other arch like ARM64 can use ISCSI_IBFT as long as the arch supports ACPI. ibft_init() needs to use the global variable ibft_addr declared in iscsi_ibft_find.c. A #ifndef CONFIG_ISCSI_IBFT_FIND is needed to declare the variable if CONFIG_ISCSI_IBFT_FIND is not selected. Moving ibft_addr into the iscsi_ibft.c does not work because if ISCSI_IBFT is selected as a module, the arch/x86/kernel/setup.c won't be able to find the variable at compile time. Signed-off-by: Thomas Tai <thomas.tai@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

2019-07-18 18:37:34 +00:00

2008-04-09 19:50:41 -07:00

ibft: convert iscsi_ibft module to iscsi boot lib This patch just converts the iscsi_ibft module to the iscsi boot sysfs lib module. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org> Signed-off-by: Peter Jones <pjones@redhat.com>

2010-04-12 18:06:18 +00:00

iscsi_ibft: make ISCSI_IBFT dependson ACPI instead of ISCSI_IBFT_FIND iscsi_ibft can use ACPI to find the iBFT entry during bootup, currently, ISCSI_IBFT depends on ISCSI_IBFT_FIND which is a X86 legacy way to find the iBFT by searching through the low memory. This patch changes the dependency so that other arch like ARM64 can use ISCSI_IBFT as long as the arch supports ACPI. ibft_init() needs to use the global variable ibft_addr declared in iscsi_ibft_find.c. A #ifndef CONFIG_ISCSI_IBFT_FIND is needed to declare the variable if CONFIG_ISCSI_IBFT_FIND is not selected. Moving ibft_addr into the iscsi_ibft.c does not work because if ISCSI_IBFT is selected as a module, the arch/x86/kernel/setup.c won't be able to find the variable at compile time. Signed-off-by: Thomas Tai <thomas.tai@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

2019-07-18 18:37:34 +00:00

firmware: iscsi_ibft: fix ISCSI_IBFT Kconfig entry Fix ISCSI_IBFT Kconfig entry, replace tab with a space character. Fixes: 138fe4e0697 ("Firmware: add iSCSI iBFT Support") Signed-off-by: Prasad Pandit <pjp@fedoraproject.org> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

2024-03-11 16:21:22 +05:30

2008-04-09 19:50:41 -07:00

ARM: bcm2835: Add the Raspberry Pi firmware driver This gives us a function for making mailbox property channel requests of the firmware, which is most notable in that it will let us get and set clock rates. Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org>

2015-02-26 10:08:06 +00:00

Revert "USB: pci-quirks: Add Raspberry Pi 4 quirk" This reverts commit c65822fef4adc0ba40c37a47337376ce75f7a7bc. The initialization of Raspberry Pi 4's USB chip is now handled through a reset controller. No need to directly call the firmware routine through a PCI quirk. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200629161845.6021-7-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-06-29 18:18:42 +02:00

firmware: raspberrypi: Change dependency to ARCH_BCM2835 and COMPILE_TEST The Raspberry Pi firmware driver has no compile dependencies on the BCM2835 mailbox driver. It's just a indirect runtime dependency: the driver only works on a Raspberry Pi. Change the dependency from BCM2835_MBOX to ARCH_BCM2835. Also allow compile tests. This allows drivers that have build time dependencies on this firmware driver to be compile tested as well. More dependencies are added to account for build time dependencies: - depends on MAILBOX for mailbox API (not stubbed) usage - depends on ARM || ARM64 for dsb() usage Also make it built by default if ARCH_BCM2835, since many functions will not work without this firmware driver. Signed-off-by: Chen-Yu Tsai <wenst@chromium.org> Link: https://lore.kernel.org/r/20260427091058.2669812-1-wenst@chromium.org Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>

2026-04-27 17:10:57 +08:00

ARM: bcm2835: Add the Raspberry Pi firmware driver This gives us a function for making mailbox property channel requests of the firmware, which is most notable in that it will let us get and set clock rates. Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org>

2015-02-26 10:08:06 +00:00

firmware: introduce sysfs driver for QEMU's fw_cfg device Make fw_cfg entries of type "file" available via sysfs. Entries are listed under /sys/firmware/qemu_fw_cfg/by_key, in folders named after each entry's selector key. Filename, selector value, and size read-only attributes are included for each entry. Also, a "raw" attribute allows retrieval of the full binary content of each entry. The fw_cfg device can be instantiated automatically from ACPI or the Device Tree, or manually by using a kernel module (or command line) parameter, with a syntax outlined in the documentation file. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-01-28 09:23:11 -05:00

fw_cfg: Add support for LoongArch architecture Qemu fw_cfg support was missing for LoongArch, which made some functions unusable in virtual machines. So add the missing LoongArch defines. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-ID: <20260529140559.1775511-1-chenhuacai@loongson.cn>

2026-05-29 22:05:59 +08:00

firmware: qemu config needs I/O ports Not all machines have PCI style I/O port memory, or they do not allow mapping it using the ioport_map() function, whcih results in a build error with the newly added qemu firmware code: drivers/firmware/built-in.o: In function `fw_cfg_io_cleanup': qemu_fw_cfg.c:(.text+0x144): undefined reference to `ioport_unmap' drivers/firmware/built-in.o: In function `fw_cfg_sysfs_probe': qemu_fw_cfg.c:(.text+0xb18): undefined reference to `ioport_map' This adds a Kconfig dependency to ensure the driver can only be built on platforms that support it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 75f3e8e47f38 ("firmware: introduce sysfs driver for QEMU's fw_cfg device") Acked-by: Gabriel Somlo <somlo@cmu.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-02-11 15:23:51 +01:00

firmware: introduce sysfs driver for QEMU's fw_cfg device Make fw_cfg entries of type "file" available via sysfs. Entries are listed under /sys/firmware/qemu_fw_cfg/by_key, in folders named after each entry's selector key. Filename, selector value, and size read-only attributes are included for each entry. Also, a "raw" attribute allows retrieval of the full binary content of each entry. The fw_cfg device can be instantiated automatically from ACPI or the Device Tree, or manually by using a kernel module (or command line) parameter, with a syntax outlined in the documentation file. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-01-28 09:23:11 -05:00

firmware: add Intel Stratix10 service layer driver Some features of the Intel Stratix10 SoC require a level of privilege higher than the kernel is granted. Such secure features include FPGA programming. In terms of the ARMv8 architecture, the kernel runs at Exception Level 1 (EL1), access to the features requires Exception Level 3 (EL3). The Intel Stratix10 SoC service layer provides an in kernel API for drivers to request access to the secure features. The requests are queued and processed one by one. ARM’s SMCCC is used to pass the execution of the requests on to a secure monitor (EL3). The header file stratix10-sve-client.h defines the interface between service providers (FPGA manager is one of them) and service layer. The header file stratix10-smc.h defines the secure monitor call (SMC) message protocols used for service layer driver in normal world (EL1) to communicate with secure monitor SW in secure monitor exception level 3 (EL3). Signed-off-by: Richard Gong <richard.gong@intel.com> Signed-off-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-11-13 12:14:01 -06:00

firmware: stratix10-svc: build only on 64-bit ARM The Stratix10 service layer and RCU drivers are useful only on Stratix10, so on ARMv8. Compile testing the RCU driver on 32-bit ARM fails: drivers/firmware/stratix10-rsu.c: In function 'rsu_status_callback': include/linux/compiler_types.h:320:38: error: call to '__compiletime_assert_179' declared with attribute error: FIELD_GET: type of reg too small for mask _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ... drivers/firmware/stratix10-rsu.c:96:26: note: in expansion of macro 'FIELD_GET' priv->status.version = FIELD_GET(RSU_VERSION_MASK, Fixes: 4483397b0353 ("ARM: socfpga: drop ARCH_SOCFPGA") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reported-by: kernel test robot <lkp@intel.com> Acked-by: Richard Gong <richard.gong@linux.intel.com> Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> --- v2: add Fixes tag

2021-03-21 19:46:50 +01:00

firmware: add Intel Stratix10 service layer driver Some features of the Intel Stratix10 SoC require a level of privilege higher than the kernel is granted. Such secure features include FPGA programming. In terms of the ARMv8 architecture, the kernel runs at Exception Level 1 (EL1), access to the features requires Exception Level 3 (EL3). The Intel Stratix10 SoC service layer provides an in kernel API for drivers to request access to the secure features. The requests are queued and processed one by one. ARM’s SMCCC is used to pass the execution of the requests on to a secure monitor (EL3). The header file stratix10-sve-client.h defines the interface between service providers (FPGA manager is one of them) and service layer. The header file stratix10-smc.h defines the secure monitor call (SMC) message protocols used for service layer driver in normal world (EL1) to communicate with secure monitor SW in secure monitor exception level 3 (EL3). Signed-off-by: Richard Gong <richard.gong@intel.com> Signed-off-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-11-13 12:14:01 -06:00

firmware: add Intel Stratix10 remote system update driver The Intel Remote System Update (RSU) driver exposes interfaces access through the Intel Service Layer to user space via sysfs interface. The RSU interfaces report and control some of the optional RSU features on Intel Stratix 10 SoC. The RSU feature provides a way for customers to update the boot configuration of a Intel Stratix 10 SoC device with significantly reduced risk of corrupting the bitstream storage and bricking the system. Signed-off-by: Richard Gong <richard.gong@intel.com> Reviewed-by: Alan Tull <atull@kernel.org> Link: https://lore.kernel.org/r/1567516701-26026-3-git-send-email-richard.gong@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-09-03 08:18:19 -05:00

firmware: mediatek: Add adsp ipc protocol interface Some of mediatek processors contain the Tensilica HiFix DSP for audio processing. The communication between Host CPU and DSP firmware is taking place using a shared memory area for message passing. ADSP IPC protocol offers (send/recv) interfaces using mediatek-mailbox APIs. We use two mbox channels to implement a request-reply protocol. Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com> Signed-off-by: TingHan Shen <tinghan.shen@mediatek.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com> Reviewed-by: YC Hung <yc.hung@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220512082215.3018-2-tinghan.shen@mediatek.com Signed-off-by: Mark Brown <broonie@kernel.org>

2022-05-12 16:22:13 +08:00

drivers/firmware: move x86 Generic System Framebuffers support The x86 architecture has generic support to register a system framebuffer platform device. It either registers a "simple-framebuffer" if the config option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device. But the code is generic enough to be reused by other architectures and can be moved out of the arch/x86 directory. This will allow to also support the simple{fb,drm} drivers on non-x86 EFI platforms, such as aarch64 where these drivers are only supported with DT. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javierm@redhat.com

2021-06-25 15:09:46 +02:00

sysfb: Enable boot time VESA graphic mode selection Since switch to simplefb/simpledrm VESA graphic mode selection with vga= kernel parameter is no longer available with legacy BIOS. The x86 realmode boot code enables the VESA graphic modes when option FB_BOOT_VESA_SUPPORT is enabled. This option is selected by vesafb but not simplefb/simpledrm. To enable use of VESA modes with simplefb in legacy BIOS boot mode drop dependency of BOOT_VESA_SUPPORT on FB, also drop the FB_ prefix. Select the option from sysfb rather than the drivers that depend on it. The BOOT_VESA_SUPPORT is not specific to framebuffer but rather to x86 platform, move it from fbdev to x86 Kconfig. Fixes: e3263ab389a7 ("x86: provide platform-devices for boot-framebuffers") Signed-off-by: Michal Suchanek <msuchanek@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/948c39940a4e99f5b43bdbcbe537faae71a43e1d.1645822213.git.msuchanek@suse.de

2022-02-25 21:51:34 +01:00

video: Add helpers for decoding screen_info The plain values as stored in struct screen_info need to be decoded before being used. Add helpers that decode the type of video output and the framebuffer I/O aperture. Old or non-x86 systems may not set the type of video directly, but only indicate the presence by storing 0x01 in orig_video_isVGA. The decoding logic in screen_info_video_type() takes this into account. It then follows similar code in vgacon's vgacon_startup() to detect the video type from the given values. A call to screen_info_resources() returns all known resources of the given screen_info. The resources' values have been taken from existing code in vgacon and vga16fb. These drivers can later be converted to use the new interfaces. v2: * return ssize_t from screen_info_resources() * don't call __screen_info_has_lfb() unnecessarily Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240212090736.11464-2-tzimmermann@suse.de

2024-02-12 10:06:09 +01:00

drivers/firmware: move x86 Generic System Framebuffers support The x86 architecture has generic support to register a system framebuffer platform device. It either registers a "simple-framebuffer" if the config option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device. But the code is generic enough to be reused by other architectures and can be moved out of the arch/x86 directory. This will allow to also support the simple{fb,drm} drivers on non-x86 EFI platforms, such as aarch64 where these drivers are only supported with DT. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javierm@redhat.com

2021-06-25 15:09:46 +02:00

drivers/firmware: consolidate EFI framebuffer setup for all arches The register_gop_device() function registers an "efi-framebuffer" platform device to match against the efifb driver, to have an early framebuffer for EFI platforms. But there is already support to do exactly the same by the Generic System Framebuffers (sysfb) driver. This used to be only for X86 but it has been moved to drivers/firmware and could be reused by other architectures. Also, besides supporting registering an "efi-framebuffer", this driver can register a "simple-framebuffer" allowing to use the siple{fb,drm} drivers on non-X86 EFI platforms. For example, on aarch64 these drivers can only be used with DT and doesn't have code to register a "simple-frambuffer" platform device when booting with EFI. For these reasons, let's remove the register_gop_device() duplicated code and instead move the platform specific logic that's there to sysfb driver. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625131359.1804394-1-javierm@redhat.com

2021-06-25 15:13:59 +02:00

firmware: sysfb: Mark CONFIG_SYSFB_SIMPLEFB as deprecated Mark CONFIG_SYSFB_SIMPLEFB as deprecated. Enabling it allows to run simpledrm and simplefb on EFI/VESA framebuffers. Doing this is discouraged in favor of using efidrm and vesadrm. v2: - resolve conflicting help texts (Sashiko) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patch.msgid.link/20260625065724.15794-1-tzimmermann@suse.de

2026-06-25 08:57:04 +02:00

sysfb: Make config option dependencies explicit efifb and vesafb requires sysfb implicitly but this is not stated in Kconfig. Add the dependency. With that all drivers that require sysfb depend on it so it can default to disabled. Signed-off-by: Michal Suchanek <msuchanek@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/a0fa41e9186653e4c41ad0a28259e5cdc71b1f66.1645822213.git.msuchanek@suse.de

2022-02-25 21:51:33 +01:00

drivers/firmware: move x86 Generic System Framebuffers support The x86 architecture has generic support to register a system framebuffer platform device. It either registers a "simple-framebuffer" if the config option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device. But the code is generic enough to be reused by other architectures and can be moved out of the arch/x86 directory. This will allow to also support the simple{fb,drm} drivers on non-x86 EFI platforms, such as aarch64 where these drivers are only supported with DT. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javierm@redhat.com

2021-06-25 15:09:46 +02:00

firmware: sysfb: Mark CONFIG_SYSFB_SIMPLEFB as deprecated Mark CONFIG_SYSFB_SIMPLEFB as deprecated. Enabling it allows to run simpledrm and simplefb on EFI/VESA framebuffers. Doing this is discouraged in favor of using efidrm and vesadrm. v2: - resolve conflicting help texts (Sashiko) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patch.msgid.link/20260625065724.15794-1-tzimmermann@suse.de

2026-06-25 08:57:04 +02:00

drivers/firmware: move x86 Generic System Framebuffers support The x86 architecture has generic support to register a system framebuffer platform device. It either registers a "simple-framebuffer" if the config option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device. But the code is generic enough to be reused by other architectures and can be moved out of the arch/x86 directory. This will allow to also support the simple{fb,drm} drivers on non-x86 EFI platforms, such as aarch64 where these drivers are only supported with DT. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javierm@redhat.com

2021-06-25 15:09:46 +02:00

firmware: sysfb: Mark CONFIG_SYSFB_SIMPLEFB as deprecated Mark CONFIG_SYSFB_SIMPLEFB as deprecated. Enabling it allows to run simpledrm and simplefb on EFI/VESA framebuffers. Doing this is discouraged in favor of using efidrm and vesadrm. v2: - resolve conflicting help texts (Sashiko) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patch.msgid.link/20260625065724.15794-1-tzimmermann@suse.de

2026-06-25 08:57:04 +02:00

drivers/firmware: move x86 Generic System Framebuffers support The x86 architecture has generic support to register a system framebuffer platform device. It either registers a "simple-framebuffer" if the config option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device. But the code is generic enough to be reused by other architectures and can be moved out of the arch/x86 directory. This will allow to also support the simple{fb,drm} drivers on non-x86 EFI platforms, such as aarch64 where these drivers are only supported with DT. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javierm@redhat.com

2021-06-25 15:09:46 +02:00

firmware: sysfb: Mark CONFIG_SYSFB_SIMPLEFB as deprecated Mark CONFIG_SYSFB_SIMPLEFB as deprecated. Enabling it allows to run simpledrm and simplefb on EFI/VESA framebuffers. Doing this is discouraged in favor of using efidrm and vesadrm. v2: - resolve conflicting help texts (Sashiko) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patch.msgid.link/20260625065724.15794-1-tzimmermann@suse.de

2026-06-25 08:57:04 +02:00

drivers/firmware: move x86 Generic System Framebuffers support The x86 architecture has generic support to register a system framebuffer platform device. It either registers a "simple-framebuffer" if the config option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device. But the code is generic enough to be reused by other architectures and can be moved out of the arch/x86 directory. This will allow to also support the simple{fb,drm} drivers on non-x86 EFI platforms, such as aarch64 where these drivers are only supported with DT. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javierm@redhat.com

2021-06-25 15:09:46 +02:00

firmware: sysfb: Mark CONFIG_SYSFB_SIMPLEFB as deprecated Mark CONFIG_SYSFB_SIMPLEFB as deprecated. Enabling it allows to run simpledrm and simplefb on EFI/VESA framebuffers. Doing this is discouraged in favor of using efidrm and vesadrm. v2: - resolve conflicting help texts (Sashiko) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patch.msgid.link/20260625065724.15794-1-tzimmermann@suse.de

2026-06-25 08:57:04 +02:00

drivers/firmware: move x86 Generic System Framebuffers support The x86 architecture has generic support to register a system framebuffer platform device. It either registers a "simple-framebuffer" if the config option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device. But the code is generic enough to be reused by other architectures and can be moved out of the arch/x86 directory. This will allow to also support the simple{fb,drm} drivers on non-x86 EFI platforms, such as aarch64 where these drivers are only supported with DT. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javierm@redhat.com

2021-06-25 15:09:46 +02:00

firmware: thead: Add AON firmware protocol driver The T-Head TH1520 SoC uses an E902 co-processor running Always-On (AON) firmware to manage power, clock, and other system resources [1]. This patch introduces a driver implementing the AON firmware protocol, allowing the Linux kernel to communicate with the firmware via mailbox channels. Through an RPC-based interface, the kernel can initiate power state transitions, update resource configurations, and perform other AON-related tasks. [1] Link: https://openbeagle.org/beaglev-ahead/beaglev-ahead/-/blob/main/docs/TH1520%20System%20User%20Manual.pdf Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com> Acked-by: Drew Fustini <drew@pdp7.com> Link: https://lore.kernel.org/r/20250311171900.1549916-3-m.wilczynski@samsung.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

2025-03-11 18:18:57 +01:00

firmware: thead: add CONFIG_MAILBOX dependency Without this, the driver fails to build: ld: drivers/firmware/thead,th1520-aon.o: in function `th1520_aon_call_rpc': thead,th1520-aon.c:(.text+0x28): undefined reference to `mbox_send_message' ld: drivers/firmware/thead,th1520-aon.o: in function `th1520_aon_deinit': thead,th1520-aon.c:(.text+0x17e): undefined reference to `mbox_free_channel' ld: drivers/firmware/thead,th1520-aon.o: in function `th1520_aon_init': thead,th1520-aon.c:(.text+0x1d9): undefined reference to `mbox_request_channel_byname' Fixes: e4b3cbd840e5 ("firmware: thead: Add AON firmware protocol driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Michal Wilczynski <m.wilczynski@samsung.com> Link: https://lore.kernel.org/r/20250314154816.4045334-1-arnd@kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

2025-03-14 16:48:13 +01:00

firmware: thead: Add AON firmware protocol driver The T-Head TH1520 SoC uses an E902 co-processor running Always-On (AON) firmware to manage power, clock, and other system resources [1]. This patch introduces a driver implementing the AON firmware protocol, allowing the Linux kernel to communicate with the firmware via mailbox channels. Through an RPC-based interface, the kernel can initiate power state transitions, update resource configurations, and perform other AON-related tasks. [1] Link: https://openbeagle.org/beaglev-ahead/beaglev-ahead/-/blob/main/docs/TH1520%20System%20User%20Manual.pdf Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com> Acked-by: Drew Fustini <drew@pdp7.com> Link: https://lore.kernel.org/r/20250311171900.1549916-3-m.wilczynski@samsung.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

2025-03-11 18:18:57 +01:00

firmware: Add basic support for TI System Control Interface (TI-SCI) protocol Texas Instrument's System Control Interface (TI-SCI) Message Protocol is used in Texas Instrument's System on Chip (SoC) such as those in keystone family K2G SoC to communicate between various compute processors with a central system controller entity. TI-SCI message protocol provides support for management of various hardware entities within the SoC. Add support driver to allow communication with system controller entity within the SoC using the mailbox client. We introduce the basic registration and query capability for the driver protocol as part of this change. Subsequent patches add in functionality specific to the TI-SCI features. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com>

2016-10-18 18:08:34 -05:00

firmware: config: ti-sci: Default set to ARCH_K3 for the ti sci driver With ARCH_K3=y we cannot enable TI_SCI_PROTOCOL=m because ARCH_K3 selects TI_SCI_PROTOCOL. Modify the logic to enable TI_SCI_PROTOCOL by default when ARCH_K3=y allowing us to submit a future patch to remove select on ARCH_K3 without breaking existing users. Signed-off-by: Guillaume La Roque <glaroque@baylibre.com> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20250220-ti-firmware-v2-1-ff26883c6ce9@baylibre.com Signed-off-by: Nishanth Menon <nm@ti.com>

2025-02-20 14:31:17 +01:00

firmware: Add basic support for TI System Control Interface (TI-SCI) protocol Texas Instrument's System Control Interface (TI-SCI) Message Protocol is used in Texas Instrument's System on Chip (SoC) such as those in keystone family K2G SoC to communicate between various compute processors with a central system controller entity. TI-SCI message protocol provides support for management of various hardware entities within the SoC. Add support driver to allow communication with system controller entity within the SoC using the mailbox client. We introduce the basic registration and query capability for the driver protocol as part of this change. Subsequent patches add in functionality specific to the TI-SCI features. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com>

2016-10-18 18:08:34 -05:00

firmware: Move Trusted Foundations support Move the Trusted Foundations support out of arch/arm/firmware and into drivers/firmware where most other firmware support implementations are located. Signed-off-by: Thierry Reding <treding@nvidia.com>

2019-04-10 10:47:28 +02:00

firmware: trusted_foundations: add ARMv7 dependency The "+sec" extension is invalid for older ARM architectures, but the code can now be built on any ARM configuration: /tmp/trusted_foundations-2d0882.s: Assembler messages: /tmp/trusted_foundations-2d0882.s:194: Error: architectural extension `sec' is not allowed for the current base architecture /tmp/trusted_foundations-2d0882.s:201: Error: selected processor does not support `smc #0' in ARM mode /tmp/trusted_foundations-2d0882.s:213: Error: architectural extension `sec' is not allowed for the current base architecture /tmp/trusted_foundations-2d0882.s:220: Error: selected processor does not support `smc #0' in ARM mode Add a dependency on ARMv7 for the build. Fixes: 4cb5d9eca143 ("firmware: Move Trusted Foundations support") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Olof Johansson <olof@lixom.net>

2019-06-17 14:33:23 +02:00

firmware: Move Trusted Foundations support Move the Trusted Foundations support out of arch/arm/firmware and into drivers/firmware where most other firmware support implementations are located. Signed-off-by: Thierry Reding <treding@nvidia.com>

2019-04-10 10:47:28 +02:00

firmware: Add Turris Mox rWTM firmware driver This adds a driver to communicate with the firmware running on the secure processor of the Turris Mox router, enabling the kernel to retrieve true random numbers from the Entropy Bit Generator and to read some information burned into eFuses when device was manufactured: and to sign messages with the ECDSA private key burned into each Turris Mox device when manufacturing. This also adds support to read other information burned into eFuses: - serial number - board version - MAC addresses - RAM size - ECDSA public key (this is not read directly from eFuses, rather it is computed by the firmware as pair to the burned private key) The source code of the firmware is open source and can be found at https://gitlab.labs.nic.cz/turris/mox-boot-builder/tree/master/wtmi The firmware is also able to, on demand, sign messages with the burned ECDSA private key, but since Linux's akcipher API is not yet stable (and therefore not exposed to userspace via netlink), this functionality is not supported yet. Link: https://lore.kernel.org/r/20190822014318.19478-3-marek.behun@nic.cz Signed-off-by: Marek Behún <marek.behun@nic.cz> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

2019-08-22 03:43:17 +02:00

firmware: turris-mox-rwtm: Add support for ECDSA signatures with HW private key Add support for digital message signing with the private key stored in the rWTM secure coprocessor. Turris Mox devices have an ECDSA private key generated and burned into rWTM eFuses when manufactured. This private key is not readable from the rWTM, but rWTM firmware allows for signing messages with it and retrieving the public key. This is exposed to userspace via the keyctl API. User can find the key by either looking at /proc/keys or listing the keyring: $ cat /proc/keys 0240b221 ... keyring .turris-signing-keys: 1 34ff9ac9 ... turris-si Turris MOX SN 0000000D30000005 rWTM ECDSA ke... $ keyctl rlist %:.turris-signing-keys 889166537 To get the public key: $ keyctl read 889166537 67 bytes of data in key: 0201a05c 1a79242b 13f2fc02 b48ffdbb 6ee8d5ba 812d6784 5f04f302 c0894d3e b93474f9 46235777 5c926fb4 cce89b50 88cf5d10 c07fd9c5 fdcea257 3d8f1c33 1bf826 To sign a message: $ dd if=/dev/urandom of=msg_to_sign bs=64 count=1 $ keyctl pkey_sign 889166537 0 msg_to_sign >signature Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

2025-02-04 14:14:15 +01:00

firmware: arm_ffa: Add initial FFA bus support for device enumeration The Arm FF for Armv8-A specification has concept of endpoints or partitions. In the Normal world, a partition could be a VM when the Virtualization extension is enabled or the kernel itself. In order to handle multiple partitions, we can create a FFA device for each such partition on a dedicated FFA bus. Similarly, different drivers requiring FFA transport can be registered on the same bus. We can match the device and drivers using UUID. This is mostly for the in-kernel users with FFA drivers. Link: https://lore.kernel.org/r/20210521151033.181846-2-sudeep.holla@arm.com Tested-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

2021-05-21 16:10:29 +01:00

MIPS: BCM47xx: Move NVRAM driver to the drivers/firmware/ After Broadcom switched from MIPS to ARM for their home routers we need to have NVRAM driver in some common place (not arch/mips/). As explained in Kconfig, this driver is responsible for parsing SoC configuration data that is passed to the kernel in flash from the bootloader firmware called "CFE". We were thinking about putting it in bus directory, however there are two possible buses for MIPS: drivers/ssb/ and drivers/bcma/. So this won't fit there and this is why I would like to move this driver to the drivers/firmware/. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Reviewed-by: Paul Walmsley <paul@pwsan.com> Cc: linux-mips@linux-mips.org Cc: Hauke Mehrtens <hauke@hauke-m.de> Cc: Seiji Aguchi <seiji.aguchi@hds.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Mike Waychison <mikew@google.com> Cc: Roy Franz <roy.franz@linaro.org> Cc: Matt Fleming <matt.fleming@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Patchwork: https://patchwork.linux-mips.org/patch/10544/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2015-06-10 23:05:08 +02:00

firmware: cs_dsp: add driver to support firmware loading on Cirrus Logic DSPs wm_adsp originally provided firmware loading on some audio DSP and was implemented as an ASoC codec driver. However, the firmware loading now covers a wider range of DSP cores and peripherals containing them, beyond just audio. So it needs to be available to non-audio drivers. All the core firmware loading support has been moved into a new driver cs_dsp, leaving only the ASoC-specific parts in wm_adsp. Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20210913160057.103842-17-simont@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>

2021-09-13 17:00:57 +01:00

driver: Google EFI SMI The "gsmi" driver bridges userland with firmware specific routines for accessing hardware. Currently, this driver only supports NVRAM and eventlog information. Deprecated functions have been removed from the driver, though their op-codes are left in place so that they are not re-used. This driver works by trampolining into the firmware via the smi_command outlined in the FADT table. Three protocols are used due to various limitations over time, but all are included herein. This driver should only ever load on Google boards, identified by either a "Google, Inc." board vendor string in DMI, or "GOOGLE" in the OEM strings of the FADT ACPI table. This logic happens in gsmi_system_valid(). Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Aaron Durbin <adurbin@google.com> Signed-off-by: Mike Waychison <mikew@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-04-29 17:39:19 -07:00

efivars: Move pstore code into the new EFI directory efivars.c has grown far too large and needs to be divided up. Create a new directory and move the persistence storage code to efi-pstore.c now that it uses the new efivar API. This helps us to greatly reduce the size of efivars.c and paves the way for moving other code out of efivars.c. Note that because CONFIG_EFI_VARS can be built as a module efi-pstore must also include support for building as a module. Reviewed-by: Tom Gundersen <teg@jklm.no> Tested-by: Tom Gundersen <teg@jklm.no> Cc: Seiji Aguchi <seiji.aguchi@hds.com> Cc: Anton Vorontsov <cbouatmailru@gmail.com> Cc: Colin Cross <ccross@android.com> Cc: Kees Cook <keescook@chromium.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com>

2013-02-08 15:48:51 +00:00

firmware: imx: add SCU firmware driver support The System Controller Firmware (SCFW) is a low-level system function which runs on a dedicated Cortex-M core to provide power, clock, and resource management. It exists on some i.MX8 processors. e.g. i.MX8QM (QM, QP), and i.MX8QX (QXP, DX). This patch implements the SCU firmware IPC function and the common message sending API sc_call_rpc. Cc: Shawn Guo <shawnguo@kernel.org> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Jassi Brar <jassisinghbrar@gmail.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>

2018-10-07 21:04:42 +08:00

firmware: Amlogic: Add secure monitor driver Introduce a driver to provide calls into secure monitor mode. In the Amlogic SoCs these calls are used for multiple reasons: access to NVMEM, set USB boot, enable JTAG, etc... Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Carlo Caione <carlo@endlessm.com> [khilman: add in SZ_4K cleanup] Signed-off-by: Kevin Hilman <khilman@baylibre.com>

2016-08-27 15:43:43 +02:00

firmware: microchip: add PolarFire SoC Auto Update support Add support for Auto Update reprogramming of the FPGA fabric on PolarFire SoC, using the fw_upload mechanism a la the intel-m10-bmc-sec-update driver. This driver only writes the image to the spi flash & performs validation on it, as the entire FPGA becomes unusable during the actual reprogramming of a bitstream. To initiate the reprogramming itself, a device reset is required. The SBI SRST extension's "cold reboot" can trigger such a device reset, provided corresponding support has been enabled in the HSS (Hart Software Services), the provider of SBI runtime services on PolarFire SoC. While this is a driver responsible for the reprogramming of an FPGA, there is no dynamic discovery of devices involved, as runtime reconfiguration is not possible due to the device reset requirements. Therefore FPGA manager subsystem is not used by this driver and the FPGA subsystem maintainers were unwilling to accept it there. Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

2023-10-20 14:18:43 +01:00

firmware: smccc: Add HAVE_ARM_SMCCC_DISCOVERY to identify SMCCC v1.1 and above SMCCC v1.0 lacked discoverability of version and features. To accelerate adoption of few mitigations and protect systems more rapidly from various vulnerability, PSCI v1.0 was updated to add SMCCC discovery mechanism though the PSCI firmware implementation of PSCI_FEATURES(SMCCC_VERSION) which returns success on firmware compliant to SMCCC v1.1 and above. This inturn makes SMCCC v1.1 and above dependent on ARM_PSCI_FW for backward compatibility. Let us introduce a new hidden config for the same to build more features on top of SMCCC v1.1 and above. While at it, also sort alphabetically the psci entry. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Etienne Carriere <etienne.carriere@st.com> Reviewed-by: Etienne Carriere <etienne.carriere@st.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20200518091222.27467-2-sudeep.holla@arm.com Signed-off-by: Will Deacon <will@kernel.org>

2020-05-18 10:12:16 +01:00

firmware: qcom: move Qualcomm code into its own directory We're getting more and more qcom specific .c files in drivers/firmware/ and about to get even more. Create a separate directory for Qualcomm firmware drivers and move existing sources in there. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Acked-by: Elliot Berman <quic_eberman@quicinc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> Tested-by: Andrew Halaney <ahalaney@redhat.com> # sc8280xp-lenovo-thinkpad-x13s Link: https://lore.kernel.org/r/20231017092732.19983-2-brgl@bgdev.pl Signed-off-by: Bjorn Andersson <andersson@kernel.org>

2023-10-17 11:27:18 +02:00

firmware: add Exynos ACPM protocol driver Alive Clock and Power Manager (ACPM) Message Protocol is defined for the purpose of communication between the ACPM firmware and masters (AP, AOC, ...). ACPM firmware operates on the Active Power Management (APM) module that handles overall power activities. ACPM and masters regard each other as independent hardware component and communicate with each other using mailbox messages and shared memory. This protocol driver provides the interface for all the client drivers making use of the features offered by the APM. Add ACPM protocol support. Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> Link: https://lore.kernel.org/r/20250213-gs101-acpm-v9-2-8b0281b93c8b@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

2025-02-13 13:05:15 +00:00

firmware: smccc: Add HAVE_ARM_SMCCC_DISCOVERY to identify SMCCC v1.1 and above SMCCC v1.0 lacked discoverability of version and features. To accelerate adoption of few mitigations and protect systems more rapidly from various vulnerability, PSCI v1.0 was updated to add SMCCC discovery mechanism though the PSCI firmware implementation of PSCI_FEATURES(SMCCC_VERSION) which returns success on firmware compliant to SMCCC v1.1 and above. This inturn makes SMCCC v1.1 and above dependent on ARM_PSCI_FW for backward compatibility. Let us introduce a new hidden config for the same to build more features on top of SMCCC v1.1 and above. While at it, also sort alphabetically the psci entry. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Etienne Carriere <etienne.carriere@st.com> Reviewed-by: Etienne Carriere <etienne.carriere@st.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20200518091222.27467-2-sudeep.holla@arm.com Signed-off-by: Will Deacon <will@kernel.org>

2020-05-18 10:12:16 +01:00

firmware: tegra: Add IVC library The Inter-VM communication (IVC) is a communication protocol which is designed for interprocessor communication (IPC) or the communication between the hypervisor and the virtual machine with a guest OS. Message channels are used to communicate between processors. They are backed by DRAM or SRAM, so care must be taken to maintain coherence of data. The IVC library maintains memory-based descriptors for the transmission and reception channels as well as the data coherence of the counter and payload. Clients, such as the driver for the BPMP firmware, can use the library to exchange messages with remote processors. Based on work by Peter Newman <pnewman@nvidia.com> and Joseph Lo <josephl@nvidia.com>. Signed-off-by: Thierry Reding <treding@nvidia.com>

2016-08-19 19:05:04 +02:00

firmware: xilinx: Add Zynqmp firmware driver This patch is adding communication layer with firmware. Firmware driver provides an interface to firmware APIs. Interface APIs can be used by any driver to communicate to PMUFW(Platform Management Unit). All requests go through ATF. Signed-off-by: Rajan Vaja <rajanv@xilinx.com> Signed-off-by: Jolly Shah <jollys@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>

2018-09-12 12:38:36 -07:00

driver: Google EFI SMI The "gsmi" driver bridges userland with firmware specific routines for accessing hardware. Currently, this driver only supports NVRAM and eventlog information. Deprecated functions have been removed from the driver, though their op-codes are left in place so that they are not re-used. This driver works by trampolining into the firmware via the smi_command outlined in the FADT table. Three protocols are used due to various limitations over time, but all are included herein. This driver should only ever load on Google boards, identified by either a "Google, Inc." board vendor string in DMI, or "GOOGLE" in the OEM strings of the FADT ACPI table. This logic happens in gsmi_system_valid(). Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Aaron Durbin <adurbin@google.com> Signed-off-by: Mike Waychison <mikew@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-04-29 17:39:19 -07:00

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!

2005-04-16 15:20:36 -07:00

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