If SB_HT_CHAIN_ON_BUS0 is selected, HyperTransport chain for System Bus
is the first to scan and it will be assigned with bus number 0.
If HT_CHAIN_DISTRIBUTE is selected, each link will reserve a fixed range
of bus numbers instead of assigning consecutive numbers across all the links.
All fam10 have SB_HT_CHAIN_ON_BUS0 selected under northbridge.
Follow-up can easily drop this if we find this is dictated by architecture.
Change-Id: I8deddcb4c3fd679b6b27e2879d9dba3895c4dd6f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8366
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
When we want to scan the HT chain to southbridge first, we
relocate it as the first item of dev->link_list of node 0.
Change-Id: Ic73ba43aadb3c5e0c8d4b82ed7d41094692ea37f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8560
Tested-by: build bot (Jenkins)
Reviewed-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Define the default value under northbridge. The list of boards this
patchset touches will change to use SB_HT_CHAIN_ON_BUS0 with
follow-up patch.
Based on code analysis, these boards already scan system bus
as the first (active) HT chain, so it is placed as bus 0
even when this option was not explicitly selected.
Change-Id: I5a00d6372cb89151940aeee517ea613398825c78
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8353
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Some cases of max==0xff wrapping around the 8-bit link->secondary
register remain to be solved.
Change-Id: I01e2ab6b2f23a03dbac49207ab584eccd1ca9b1f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8364
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
One PCI function may contain upto 4 links, further links must
be added to PCI function 4 on the same device.
There is no requirement that in dev->link_list the last element
would have the highest link->link_num.
Also fix off-by-one error when allocating for more links.
Change-Id: If7ebdd1ad52653d3757b5930bd0a83e2cf2fcac6
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8555
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
clang requires some additional options to disable warnings which
can be handled by xcompile.
Also drop the hard coded clang compilers in Makefile
Change-Id: I0f12f755420f315127e6d9adc00b1246c6e7131b
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/7612
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
We test for it in xcompile and add it to CFLAGS.
Change-Id: I041a881b542bc55c1725af384f038da3356e3bb1
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/10426
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Instead of fetching libgcc's location and required compiler flags on every
individual build, do it once in xcompile.
Change-Id: Ie5832fcb21710c4cf381ba475589d42ce0235f96
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/10425
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
This uses the availability of CONFIG_* variables in .xcompile and tests for
compilers in xcompile so that the build system doesn't need to probe them.
Change-Id: I359ad6245d2527efa7e848a9b38f5f194744c827
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/10424
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This is in preparation of adding support for clang to xcompile.
Change-Id: I518d077f134610082b0939b1525682f2289eec34
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/10423
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
It's not used until then, but by moving it below including .config,
we can use CONFIG_* in the .xcompile file in the future.
Change-Id: I672f444dd28b5fae1fc339a1e0e78a249c9b7875
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/10422
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
crossgcc builds gmp, whose build system normally optimises for the hardware
it's built on. That may give a minor performance boost but has the downside
that the compiler becomes non-portable and may break on other systems due to
illegal instructions.
Setting CFLAGS to some reasonable value prevents gmp's configure script from
choosing CPU specific -mtune flags (which may enable optimizations that only
run on CPUs with the same feature set).
Enabling "fat" builds make the build system add all optimized assembler
routines and makes the selection of the right one a runtime decision instead
of deciding at compile time.
Change-Id: I72d20627270baa082cd02ebb4c9a09cd23f30f8c
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/10412
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The input/output value max is no longer used for tracking the
bus enumeration sequence, everything is handled in the context
of devicetree bus objects.
Change-Id: I545088bd8eaf205b1436d8c52d3bc7faf4cfb0f9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8541
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Parameter max is the cumulative number of PCI buses scanned on the
system so far. Use the property subordinate from the parent PCI bridge
device to keep track of the first available bus number instead of
passing that on the stack.
Change-Id: I1a884c98d50fa4f1eb2752e10b778aea8a7b090a
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8537
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
For the PCI root node, input parameter max==0 and output value
max is not relevant for operation.
Change-Id: I23adab24aa957c4d51d703098a9a40ed660b4e6c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8855
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
The actual use of the parameter max is to keep track of PCI bus
number while recursively scanning PCI bridges or PCI-e rootports.
Neither CPU, SMBus, LPC or other static buses are involved in this
enumeration, but the way bridge operations were originally designed
forced to pass this argument thru unrelated functions.
Follow-up removes these once the function prototype gets fixed.
Change-Id: Idbc9c515a362c571a1798bb36972058b309c2774
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8535
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Use of scan_static_bus() and tree traversals is somewhat convoluted.
Start cleaning this up by assigning each path type with separate
static scan_bus() function.
For ME, SMBus and LPC paths a bus cannot expose bridges, as those would
add to the number of encountered PCI buses.
Change-Id: I8bb11450516faad4fa33b8f69bce5b9978ec75e5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8534
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
For amdfam10, (ht_c_index > 3) never evaluates true as the code
already has a return for this case above.
Change-Id: Ie90941671e1b2b4f42e2b1b0641ca59334fcf0f1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8688
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Allows to remove parameter max from the call, it is not involved
with the unitid assignment.
Change-Id: I087622f4ff69474f0b27cfd8709106ab8ac4ca98
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8687
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Follow up for commit b890a12, some contributions brought
back a number of FSF addresses, so get rid of them again.
Change-Id: Idcd059f05523916f726b94931c2487ab028b7d72
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10409
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
1. There is a mis-understanding to calculate the value of TD Size
in Normal TRB. For MTK's xHCI controller it defines a number of
packets that remain to be transferred for a TD after processing
all Max packets in all previous TRBs, that means don't include the
current TRB's.
2. To minimize the scheduling effort for synchronous endpoints in xHC,
the MTK architecture defines some extra SW scheduling parameters for
HW. According to these parameters provided by SW, the xHC can easily
decide whether a synchronous endpoint should be scheduled in a specific
uFrame. The extra SW scheduling parameters are put into reserved DWs
in Slot and Endpoint Context. But in coreboot synchronous transfer can
be ignored, so only two fields are set to a default value 1 to support
bulk and interrupt transfers, and others are set to zero.
3. For control transfer, it is better to read back doorbell register or add
a memory barrier after ringing the doorbell to flush posted write.
Otherwise the first command will be aborted on MTK's xHCI controller.
4. Before send commands to a port, the Port Power in PORTSC register should
be set to 1 on MTK's xHCI so a hook function of enable_port in
generic_hub_ops_t struct is provided.
Change-Id: Ie8878b50c048907ebf939b3f6657535a54877fde
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 738609c11f16264c6e6429d478b2040cb391fe41
Original-Change-Id: Id9156892699e2e42a166c77fbf6690049abe953b
Original-Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/265362
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Yidi Lin <yidi.lin@mediatek.com>
Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: http://review.coreboot.org/10389
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
BRANCH=none
BUG=none
TEST=none
Change-Id: I563ef65db900d7675aeb5b9123dfb5a8980bf964
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 9764115d7bcce1d6423464bd81b58211ac728409
Original-Change-Id: Ibac8d3b9e28b4a563079f288901abcfbff6913ee
Original-Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/269863
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Queue: Yidi Lin <yidi.lin@mediatek.com>
Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: http://review.coreboot.org/10388
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
cbfs_get_file_content was replaced with cbfs_boot_map_with_leak but
36f8d27ea9 failed to get it into account.
Change-Id: I0c7840043b2ea6abaf8e70f4bf1a63c96aedebc1
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10403
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
Makes it cleaner by putting AML into separate file rather than having
an array in C code.
Change-Id: Ia5d6b50ad9dabdb97ed05c837dc3ccc48b8f490f
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10385
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This should be an internal selectable variable rather than user-visible config.
Moreover the description is misleading.
This is a typical case of an option "Should it work?" where there is only one
right answer yet we still ask it.
Change-Id: Idc0ce2e1b9f89eddd034966cc877483d994ce0eb
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10378
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
RELOCATABLE_MODULES controls inclusion of rmodule support but including it
without having anything that uses it is a pure waste of space. So instead
make RELOCATABLE_MODULES be selected exactly when there is something using it.
Change-Id: I377a955f0cd95b0f811b986df287864c3dc9f89a
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10377
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
As there can be more than one source of firmware assets this
patch generalizes the notion of locating a particular asset.
struct asset is added along with some helper functions for
working on assets as a first class citizen.
Change-Id: I2ce575d1e5259aed4c34c3dcfd438abe9db1d7b9
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10264
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
One can remove the struct buffer_area and use the region_device
embedded in the struct prog to represent the in-memory loaded
program. Do this by introducing a addrspace_32bit mem_region_device
that can have region_device operations performed on it. The
addrspace_32bit name was chosen to make it explicit that 32-bits
of address space is supported at the max.
Change-Id: Ifffa0ef301141de940e54581b5a7b6cd81311ead
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10261
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
The api to mirror_payload() was changed, but as no board
in coreboot.org selected MIRROR_PAYLOAD_TO_RAM_BEFORE_LOADING
this issue was missed. Update to using the prog functions.
Change-Id: I4037f5dc6059c0707e1bf38eb1fa3d1bbb408e2a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10260
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
A new CBFS API is introduced to allow making CBFS access
easier for providing multiple CBFS sources. That is achieved
by decoupling the cbfs source from a CBFS file. A CBFS
source is described by a descriptor. It contains the necessary
properties for walking a CBFS to locate a file. The CBFS
file is then decoupled from the CBFS descriptor in that it's
no longer needed to access the contents of the file.
All of this is accomplished using the regions infrastructure
by repsenting CBFS sources and files as region_devices. Because
region_devices can be chained together forming subregions this
allows one to decouple a CBFS source from a file. This also allows
one to provide CBFS files that came from other sources for
payload and/or stage loading.
The program loading takes advantage of those very properties
by allowing multiple sources for locating a program. Because of
this we can reduce the overhead of loading programs because
it's all done in the common code paths. Only locating the
program is per source.
Change-Id: I339b84fce95f03d1dbb63a0f54a26be5eb07f7c8
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9134
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
The lack of a div_round_up() function in libpayload keeps being a
problem for payloads and has already caused us to sprinkle numerous
less-readable ALIGN_UP(n, d) / d throughout depthcharge. Let's add this
so we can avoid adding any more and then maybe cocchinelle them all over
later.
BRANCH=None
BUG=None
TEST=None
Change-Id: I241a52770a0edcf7003b48a81875b3fa0cb7ed53
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: a3f9514f9cfd325cc3c4b542020574b605fac935
Original-Change-Id: Ia55bd4bc52ab8a249b4854e40727cf6917af7b30
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/273050
Original-Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10392
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The RPM initialization Acknowledge is cleared by writing 1
into bit-10 of the RPM_INT_ACK register.
The existing code got it wrong and is writing zero to that bit.
BRANCH=storm
BUG=chrome-os-partner:39231
TEST=with this patch and an RPM firmware update, an SP4 device
survived more than 1000 reboots in a row.
Change-Id: Ibba296ed0571ad9403a0c51c7f82f07f185b4e83
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 13b4a0f093ba652ad6bccdfc4b3686c0741c6fe7
Original-Change-Id: I39e6ea50e0f66b4af68bdb868dd4437c34bb4524
Original-Signed-off-by: Viswanath Kraleti <vkraleti@codeaurora.org>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/266969
Original-Reviewed-by: Manoj Juneja <mjuneja@qti.qualcomm.com>
Reviewed-on: http://review.coreboot.org/10310
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This patch provides support for TPM Infineon SLB9670 by adding its
device ID to the list.
BRANCH=None
BUG=chrome-os-partner:40640
TEST=Built and test SLB9670 on SKL U Reference board Fab 2
Change-Id: I2d26fc6c7d074881f2e6189e1325808544b7d26d
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 3c92884be75b631c302801e162292c245ed7bf5d
Original-Change-Id: I4607fc96f70175b2461b40ba61e7a821e187de40
Original-Signed-off-by: Wenkai Du <wenkai.du@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/274053
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/10387
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
BRANCH=none
BUG=none
TEST=Booted on Oak and confirmed the output cacheable/non-cacheable
string is correct.
Change-Id: I062c1cc384b8cb9d07038399b1bc7ef47d992103
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 45552f95b55cd9fc81817e4ff02c78e885377065
Original-Change-Id: Ie52066dbefd2f54d0746792b89f0b57767811adb
Original-Signed-off-by: Jimmy Huang <jimmy.huang@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/273994
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Yidi Lin <yidi.lin@mediatek.com>
Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: http://review.coreboot.org/10390
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
We have observed issues with enabling CONFIG_SMP and adding prints
before MMU is enabled on Tegra-based SoCs. This seems to be related
to the hardware assisted locks and the restrictions laid down by ARMv8
spec.
BUG=None
BRANCH=None
TEST=Boots to kernel prompt on smaug.
Change-Id: I29a52f5a972baf396c01faba3ae3e5ecd27563e9
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: f52ee4b5b2e9b7f54eee0d105cb7e17f9a7e1613
Original-Change-Id: I432895560f468903c7beef00e78b6d38275a619c
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/272449
Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/10311
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The current arm64 MMU interface is difficult to use in pre-RAM
environments. It is based on the memranges API which makes use of
malloc(), and early stages usually don't have a heap. It is also built
as a one-shot interface that requires all memory ranges to be laid out
beforehand, which is a problem when existing areas need to change (e.g.
after initializing DRAM).
The long-term goal of this patch is to completely switch to a
configure-as-you-go interface based on the mmu_config_range() function,
similar to what ARM32 does. As a first step this feature is added
side-by-side to the existing interface so that existing SoC
implementations continue to work and can be slowly ported over one by
one. Like the ARM32 version it does not garbage collect page tables that
become unused, so repeated mapping at different granularities will
exhaust the available table space (this is presumed to be a reasonable
limitation for a firmware environment and keeps the code much simpler).
Also do some cleanup, align comments between coreboot and libpayload for
easier diffing, and change all error cases to assert()s. Right now the
code just propagates error codes up the stack until it eventually
reaches a function that doesn't check them anymore. MMU configuration
errors (essentially just misaligned requests and running out of table
space) should always be compile-time programming errors, so failing hard
and fast seems like the best way to deal with them.
BRANCH=None
BUG=None
TEST=Compile-tested rush_ryu. Booted on Oak and hacked MMU init to use
mmu_config_range() insted of memranges. Confirmed that CRCs over all page
tables before and after the change are equal.
Change-Id: I93585b44a277c1d96d31ee9c3dd2522b5e10085b
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: f10fcba107aba1f3ea239471cb5a4f9239809539
Original-Change-Id: I6a2a11e3b94e6ae9e1553871f0cccd3b556b3e65
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/271991
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10304
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Kyösti Mälkki