Only 16 MByte of the SPI flash can be mapped right below the 4 GB
boundary.
In case of a larger SPI flash size, still only the 16 MByte region
starting at 0xff000000 can be configured as WRPROT and be reserved for
the MMIO mapped SPI flash region. The next 16 MByte MMIO region starting
at address 0xfe000000 contain for example the LAPIC MMIO region, the
ACPIMMIO region and the UART/I2C controller MMIO regions which shouldn't
be configured as WRPROT. Reserving this region for the MMIO mapped SPI
flash would also result in an overlap with the MMIO resources mentioned
above.
In the case of a smaller SPI flash, reserving the full 16 MByte flash
MMIO region makes sure that the resource allocator won't try to put
anything else in the lower parts of the 16 MByte SPI mapping region.
To avoid the issues described above, always reserve/cache the maximum
amount of 16 MBytes of flash that can be mapped below 4 GB.
TEST=On boards with 16 MByte SPI flash chips, the resulting image of a
timeless build doesn't change with this patch. Verified this on Chausie
(Mendocino), Majolica (Cezanne), Cereme (Picasso) and Google/Careena
(Stoneyridge). On Mandolin (Picasso) with an 8 MByte flash, the
resulting image of a timeless build is different, but neither the
coreboot console output nor the Linux dmesg output shows any errors that
might be related to this change.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ie12bd48e48e267a84dc494f67e8e0c7a4a01a320
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66700
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The syscfg has to option to automatically mark the range between 4G and
TOM2, which contains DRAM, as WB. Making it generally not necessary to
allocate MTRRs for memory above 4G if no PCI BARs are placed up there.
Change-Id: Ifbacae28e272ab2f39f268ad034354a9c590d035
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64868
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Implementation for setup_lapic() did two things -- call
enable_lapic() and virtual_wire_mode_init().
In PARALLEL_MP case enable_lapic() was redundant as it
was already executed prior to initialize_cpu() call.
For the !PARALLEL_MP case enable_lapic() is added to
AP CPUs.
Change-Id: I5caf94315776a499e9cf8f007251b61f51292dc5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58387
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
When the mp_init_with_smm call returns a failure, coreboot can't just
continue with the initialization and boot process due to the system
being in a bad state. Ignoring the failure here would just cause the
boot process failing elsewhere where it may not be obvious that the
failed multi-processor initialization step was the root cause of that.
I'm not 100% sure if calling do_cold_reset or calling die_with_post_code
is the better option here. Calling do_cold_reset likely here would
likely result in a boot-failure loop, so I call die_with_post_code here.
BUG=b:193809448
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ifeadffb3bae749c4bbd7ad2f3f395201e67d9e28
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58859
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Each CPU/SoC checks the return value of the mp_init_with_smm and prints
the same error message if it wasn't successful, so move this check and
printk to mp_init_with_smm. For this the original mp_init_with_smm
function gets renamed to do_mp_init_with_smm and a new mp_init_with_smm
function is created which then calls do_mp_init_with_smm, prints the
error if it didn't return CB_SUCCESS and passes the return value of
do_mp_init_with_smm to its caller.
Since no CPU/SoC code handles a mp_init_with_smm failure apart from
printing a message, also add a comment at the mp_init_with_smm call
sites that the code might want to handle a failure.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I181602723c204f3e43eb43302921adf7a88c81ed
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58498
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Using cb_err as return type clarifies the meaning of the different
return values. This patch also adds the types.h include that provides
the definition of the cb_err enum and checks the return value of
mp_init_with_smm against the enum values instead of either checking if
it's non-zero or less than zero to handle the error case.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ibcd4a9a63cc87fe176ba885ced0f00832587d492
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58491
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
The warm reset bit in the NCP_ERR register doesn't behave as the PPR [1]
suggested; no matter if something was written to the register, the
NCP_WARM_BOOT bit never got set and the NCP_ERR register in I/O-space
always reads back as 0x7f.
[1] checked with PPR for AMD Family 19h Model 51h A1 (CZN) #56569 Rev
3.01
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I569372db9f36ec7bbc741f4d7312ade312daa70b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55101
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Trying to limit the number of available cores by setting the MAX_CPUS
Kconfig option to a lower value than the SoC's default might result in
cores being enabled in the FSP-S, but not fully initialized in coreboot
which will cause some malfunction. Add a static assert to make sure
that this option isn't changed from the default. To limit the maximum
number of cores, use the downcore_mode and disable_smt devicetree
settings instead.
BUG=b:184162768
TEST=Build fails if MAX_CPUS isn't the expected default.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Idd6aa1d99128b17218a8e910c33415218a58578f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52606
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
TEST=Boot majolica and see microcode update
CBFS: Found 'cpu_microcode_blob.bin' @0x6900 size 0x15c0 in mcache @0xcf7fe9d8
microcode: patch id to apply = 0x0a50000b
microcode: being updated to patch id = 0x0a50000b succeeded
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: If50b1d8b3ebf4b3e6f8a9dd3ab96073e0cb92424
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50616
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
