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Implement a x86 memory barrier mb(). Furthermore, remove the previously
used mfence() function, which does the same thing.
The mb() macro is now equivalent to Linux (v6.9):
linux/arch/x86/include/asm/barrier.h
Signed-off-by: Philip Oberfichtner <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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As part of bringing the master branch back in to next, we need to allow
for all of these changes to exist here.
Reported-by: Jonas Karlman <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
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When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.
This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing
changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35.
Reported-by: Jonas Karlman <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
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Remove <common.h> from all x86 architecture files and when needed add
missing include files directly.
Signed-off-by: Tom Rini <[email protected]>
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Now that Linux has accepted these tags, move the device tree files in
U-Boot over to use them.
Signed-off-by: Simon Glass <[email protected]>
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Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <[email protected]>
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Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.
Signed-off-by: Simon Glass <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
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Now that sequence numbers are set up when devices are bound, this code is
not needed. Also, we should use dev_seq() instead of req_seq. Update the
whole file accordingly.
Also fix up APL cpu while we are here.
Signed-off-by: Simon Glass <[email protected]>
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Try to maintain some consistency between these variables by using _plat as
a suffix for them.
Signed-off-by: Simon Glass <[email protected]>
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We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).
Rename some of the latter variables to end with 'plat' for consistency.
Signed-off-by: Simon Glass <[email protected]>
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Add a description of how this module works and also some missing function
comments.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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It is convenient to iterate through the CPUs performing work on each one
and processing the result. Add a few iterator functions which handle this.
These can be used by any client code. It can call mp_run_on_cpus() on
each CPU that is returned, handling them one at a time.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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With the new MP features the CPUs are no-longer parked when the OS is run.
Fix this by calling a special function to park them, just before the OS is
started.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Add a way to run a function on a selection of CPUs. This supports either
a single CPU, all CPUs, just the main CPU or just the 'APs', in Intel
terminology.
It works by writing into a mailbox and then waiting for the CPUs to notice
it, take action and indicate they are done.
When SMP is not yet enabled, this just calls the function on the main CPU.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Set this flag so we can track when it is safe to use CPUs other than the
main one.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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At present the APs (non-boot CPUs) are inited once and then parked ready
for the OS to use them. However in some cases we want to send new requests
through, such as to change MTRRs and keep them consistent across CPUs.
Change the last state of the flight plan to go into a wait loop, accepting
instructions from the main CPU.
Drop cpu_map since it is not used.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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This function is misnamed since it does not actually init the BSP. Also
it is convenient to adjust it to return a little more information.
Rename and update the function, to allow it to return the BSP CPU device
and number, as well as the total number of CPUs.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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At present each CPU is given a number when it starts itself up. While this
saves a tiny amount of time by doing the device-tree read in parallel, it
is confusing that the numbering happens on the fly.
Move this code into mp_init() and do it at the start.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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This does not need to be global across all functions in this file. Pass a
parameter instead.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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These parameters are named differently from elsewhere in this file. Switch
them to avoid confusion.
Also add comments to this function.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
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The functions used by the flight plan are declared in the header file but
are not used in any other file.
Move the flight plan steps down to just above where it is used so that we
can make these function static.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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At present the 'flight plan' for CPUs is passed into mp_init. But it is
always the same. Move it into the mp_init file so everything is in one
place. Also drop the SMI function since it does nothing. If we implement
SMIs, more refactoring will be needed anyway.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Update this code to use livetree calls instead of flat-tree.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Wolfgang Wallner <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Move this uncommon header out of the common header.
Signed-off-by: Simon Glass <[email protected]>
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Move this header out of the common header.
Signed-off-by: Simon Glass <[email protected]>
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This function is specific to qemu so it seems best to keep it separate
from the generic code.
Move it out to a new file and update the condition to use if() instead of
#ifdef
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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At present many of the functions in this file return -1 as an error
number. which is -EPERM. Update the code to use real error numbers.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <[email protected]>
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There is no microcode update available for SoCs used on Intel MID
platforms.
Use conditional to bypass it.
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>
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At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.
Signed-off-by: Simon Glass <[email protected]>
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Let's configure LAPIC in a common place - interrupt_init().
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Make file names consistent with CONFIG_QFW and CONFIG_CMD_QFW
Signed-off-by: Miao Yan <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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This patch splits qfw command interface and qfw core function into two
files, and introduces a new Kconfig option (CONFIG_QFW) for qfw core.
Now when qfw command interface is enabled, it will automatically select
qfw core. This patch also makes the ACPI table generation select
CONFIG_QFW.
Signed-off-by: Miao Yan <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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- Move the command portion of arch/x86/cpu/qemu/fw_cfg.c into
cmd/qemu_fw_cfg.c
- Move arch/x86/include/asm/fw_cfg.h to include/qemu_fw_cfg.h
- Rename ACPI table portion to arch/x86/cpu/qemu/acpi_table.c
Signed-off-by: Tom Rini <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Each CPU needs to have its microcode loaded. Add support for this so that
all CPUs will have the same version.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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As each core starts up, record its microcode version and CPU ID so these can
be presented with the 'cpu detail' command.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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The timeout step is always 50us. By updating apic_wait_timeout() to print
the debug messages we can simplify the code. Also tidy up a few messages and
comments while we are here.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Purely by code inspection, it looks like the parameter order to memalign()
is swapped; its parameters are (align, size). 4096 is a likely desired
alignment, and a variable named size sounds like a size:-)
Fixes: 45b5a37836d5 ("x86: Add multi-processor init")
Signed-off-by: Stephen Warren <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Tested-by: Bin Meng <[email protected]>
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Currently, when booting with more that one CPU enabled, U-Boot scans
'cpu' node in device tree and calculates CPU number. This does not scale
well as changing CPU number also requires modifying .dts and re-compiling
U-Boot.
This patch uses fw_cfg interface provided by QEMU to detect online CPU
number at runtime, and dynamically adds 'cpu' device to U-Boot's driver
model.
Signed-off-by: Miao Yan <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Tested-by: Bin Meng <[email protected]>
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Use actual CPU number, instead of maximum cpu configured, to allocate
stack memory in 'load_sipi_vector'
Signed-off-by: Miao Yan <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Tested-by: Bin Meng <[email protected]>
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Rename 'find_cpu_by_apid_id' to 'find_cpu_by_apic_id'. This should be a
typo.
Signed-off-by: Miao Yan <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Multiple APs are brought up simultaneously and they may get the same
seq num in the uclass_resolve_seq() during device_probe(). To avoid
this, set req_seq to the reg number in the device tree in advance.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Some files use global_data but don't declare it. Fix this.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Remove inline for lapic access routines and expose lapic_read()
& lapic_write() as APIs to read/write lapic registers. Also move
stop_this_cpu() to mp_init.c as it has nothing to do with lapic.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Currently lapic_setup() is called before calling mp_init(), which
then calls init_bsp() where it calls enable_lapic(), which was
already enabled in lapic_setup(). Hence move lapic_setup() call
into init_bsp() to avoid the duplication.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Most of the MP initialization codes in arch/x86/cpu/baytrail/cpu.c is
common to all x86 processors, except detect_num_cpus() which varies
from cpu to cpu. Move these to arch/x86/cpu/cpu.c and implement the
new 'get_count' method for baytrail and cpu_x86 drivers. Now we call
cpu_get_count() in mp_init() to get the number of CPUs.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Most modern x86 CPUs include more than one CPU core. The OS normally requires
that these 'Application Processors' (APs) be brought up by the boot loader.
Add the required support to U-Boot to init additional APs.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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