Allow for automatic cache-as-ram migration for the cbmem
console. The code was refactored in the thought of making
it easier to read. The #ifdefs still exist, but they are no
longer sprinkled throughout the code. The cbmem_console_p
variable now exists globally in both romstage and ramstage.
However, the cbmem_console_p is referenced using the
cache-as-ram API. When cbmem is initialized the console
is automatically copied over by calling cbmemc_reinit()
through a callback.
BUG=chrome-os-partner:19342
BRANCH=none
TEST=Built and booted. Noted that CAR values are not read incorrectly.
Change-Id: I73581599fb6c9ecc36c301c3a30154d80b36f172
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/51389
Reviewed-by: Stefan Reinauer <reinauer@google.com>
There are some boards that do a significant amount of
work after cache-as-ram is torn down but before ramstage
is loaded. For example, using vboot to verify the ramstage
is one such operation. However, there are pieces of code
that are executed that reference global variables that
are linked in the cache-as-ram region. If those variables
are referenced after cache-as-ram is torn down then the
values observed will most likely be incorrect.
Therefore provide a Kconfig option to select cache-as-ram
migration to memory using cbmem. This option is named
CAR_MIGRATION. When enabled, the address of cache-as-ram
variables may be obtained dynamically. Additionally,
when cache-as-ram migration occurs the cache-as-ram
data region for global variables is copied into cbmem.
There are also automatic callbacks for other modules
to perform their own migration, if necessary.
BUG=chrome-os-partner:19342
BRANCH=none
TEST=Built and booted. Noted that CAR values are not read incorrectly.
Change-Id: Ie0104a6e24cc6430a575ee3691671900c36db0d9
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/51386
Reviewed-by: Stefan Reinauer <reinauer@google.com>
The cooperative multitasking support allows the boot state machine
to be ran cooperatively with other threads of work. The main thread
still continues to run the boot state machine
(src/lib/hardwaremain.c). All callbacks from the state machine are
still ran synchronously from within the main thread's context.
Without any other code added the only change to the boot sequence
when cooperative multitasking is enabled is the queueing of an idlle
thread. The idle thread is responsible for ensuring progress is made
by calling timer callbacks.
The main thread can yield to any other threads in the system. That
means that anyone that spins up a thread must ensure no shared
resources are used from 2 or more execution contexts. The support
is originally intentioned to allow for long work itesm with busy
loops to occur in parallel during a boot.
Note that the intention on when to yield a thread will be on
calls to udelay().
BUG=None
BRANCH=None
TEST=Built.
Change-Id: I980a6daf8ea3f0475124329253ace2695fc39aa7
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/51162
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
... and drop the wrapper on ARMv7
BUG=none
TEST=boot tested on snow
BRANCH=none
Change-Id: Ib2b4315b664292653f8cb898fc5633fce421deca
Reviewed-on: https://gerrit.chromium.org/gerrit/50728
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
Commit-Queue: Stefan Reinauer <reinauer@google.com>
Tested-by: Stefan Reinauer <reinauer@google.com>
it has been unused since 9 years or so, hence drop it.
BRANCH=none
BUG=none
TEST=boot tested on snow
Change-Id: I0706feb7b3f2ada8ecb92176a94f6a8df53eaaa1
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/3212
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/50720
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
The cbfs core code would print out the name of the file it is
searching for and when it is found would print out the name
again. This contributes to a lot of unnecessary messages in a
functioning payload’s output. Change this message to a DEBUG one
so that it will only be printed when CONFIG_DEBUG_CBFS is enabled.
BUG=None
BRANCH=None
TEST=Compiled and booted.
Change-Id: I142166bfdfcb5e7f6dba6c1ecbd13f3c0ff15088
Signed-off-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/50459
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Commit-Queue: Aaron Durbin <adurbin@chromium.org>
Tested-by: Aaron Durbin <adurbin@chromium.org>
Internally there were states that had an attribute to
indicate that the timers needed to be drained. Now that
there is a way to block state transitions rely on this
ability instead of draining timers. The timers will
drain themselves when a state is blocked.
BUG=None
BRANCH=None
TEST=Compiled and booted
Change-Id: Idfeabcc5249ca315a48740652b8892e465d08990
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/50456
Reviewed-by: Stefan Reinauer <reinauer@google.com>
In order to properly sequence the boot state machine it's
important that outside code can block the transition from
one state to the next. When timers are not involved there's
no reason for any of the existing code to block a state
transition. However, if there is a timer callback that needs to
complete by a certain point in the boot sequence it is necessary
to place a block for the given state.
To that end, 4 new functions are added to provide the API for
blocking a state.
1. boot_state_block(boot_state_t state, boot_state_sequence_t seq);
2. boot_state_unblock(boot_state_t state, boot_state_sequence_t seq);
3. boot_state_current_block(void);
4. boot_state_current_unblock(void);
BUG=None
BRANCH=None
TEST=Compiled and booted
Change-Id: I3de15e5b91e7fd1c833bc99b0d0af46a5a7c4bee
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/50455
Reviewed-by: Stefan Reinauer <reinauer@google.com>
fill_lb_framebuffer() now sets the framebuffer pointer according to
the EDID information, so it must be called before setting the tag
and size.
(credit to rminnich for this, I'm just uploading it)
BRANCH=none
BUG=none
TEST=booted on Snow using depthcharge in dev mode
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Change-Id: I5ac783fa3a776eee504d39889284041d1dc2c92a
Reviewed-on: https://gerrit.chromium.org/gerrit/50012
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
The cbfs core code would print out all unmatched file
names when searching for a file. This contributes to a lot
of unnecessary messages in the boot log. Change this
message to a DEBUG one so that it will only be printed when
CONFIG_DEBUG_CBFS is enabled.
Change-Id: I1e46a4b21d80e5d2f9b511a163def7f5d4e0fb99
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49765
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
When TIMER_QUEUE is configured on call the timer callbacks on
entry into a state but before its entry callbacks. In addition
provide a barrier to the following states so that timers are drained
before proceeding. This allows for blocking state traversal for key
components of boot.
BS_OS_RESUME
BS_WRITE_TABLES
BS_PAYLOAD_LOAD
BS_PAYLOAD_BOOT
Future functionality consists of evaluating the timer callbacks within
the device tree. One example is dev_initialize() as that seems state
seems to take 90% of the boot time. The timer callbacks could then be
ran in a more granular manner.
Change-Id: I9be5dbd8ad3d56a17f5de827a870fa63608ab8f2
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49754
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
A timer queue provides the mechanism for calling functions
in the future by way of a callback. It utilizes the MONOTONIC_TIMER
to track time through the boot. The implementation is a min-heap
for keeping track of the next-to-expire callback.
Change-Id: Ia493a284efb3b34e8577e6d3db957169c6d86a1b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49753
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
When the MONOTONIC_TIMER is available track the entry, run, and exit
times for each state. It should be noted that the times for states that
vector to OS or a payload do not have their times reported.
Change-Id: I1ab55ca52e37db02f4fa3c0707170ab162bb78e6
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49752
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
The notion of loading a payload in the current boot state
machine isn't actually loading the payload. The reason is
that cbfs is just walked to find the payload. The actual
loading and booting were occuring in selfboot(). Change this
balance so that loading occurs in one function and actual
booting happens in another. This allows for ample opportunity
to delay work until just before booting.
Change-Id: I8c2af24a12a77d22e61c0bd8c392714bd1dfdedd
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49747
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
On x86 systems there is a concept of cachings the ROM. However,
the typical policy is that the boot cpu is the only one with
it enabled. In order to ensure the MTRRs are the same across cores
the rom cache needs to be disabled prior to OS resume or boot handoff.
Therefore, utilize the boot state callbacks to schedule the disabling
of the ROM cache at the ramstage exit points.
Change-Id: If67b9b50081d21d505685a96d201c242e71b64f7
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49746
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
The cbmem_post_handling() function was implemented by 2
chipsets in order to save memory configuration in flash. Convert
both of these chipsets to use the boot state machine callbacks
to perform the saving of the memory configuration.
Change-Id: Ic086cae17491a20d2e81aa1c7922bd821aacb00b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49745
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
There were previously 2 functions, init_cbmem_pre_device() and
init_cbmem_post_device(), where the 2 cbmem implementations
implemented one or the other. These 2 functions are no longer
needed to be called in the boot flow once the boot state callbacks
are utilized.
Change-Id: I2648ebc26a753896ad4b82ab8136e9742b4d6af5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49744
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Utilize the static boot state callback scheduling to initialize
and tear down the coverage infrastructure at the appropriate points.
The coverage initialization is performed at BS_PRE_DEVICE which is the
earliest point a callback can be called. The tear down occurs at the
2 exit points of ramstage: OS resume and payload boot.
Change-Id: I623e55f19f9fb52492f288c620cc966cafd0ab71
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49743
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
It's helpful to provide a distinct state that affirmatively
describes that OS resume will occur. The previous code included
the check and the actual resuming in one function. Because of this
grouping one had to annotate the innards of the ACPI resume
path to perform specific actions before OS resume. By providing
a distinct state in the boot state machine the necessary actions
can be scheduled accordingly without modifying the ACPI code.
Change-Id: I298f0f1c1aa6ee62fee0067a53dc021fe07044dc
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49742
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Many of the boot state callbacks can be scheduled at compile time.
Therefore, provide a way for a compilation unit to inform the
boot state machine when its callbacks should be called. Each C
module can export the callbacks and their scheduling requirements
without changing the shared boot flow code.
Change-Id: I6a4102cb9fac3f7980c28169430251651fddeb30
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49741
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
The boot flow currently has a fixed ordering. The ordering
is dictated by the device tree and on x86 the PCI device ordering
for when actions are performed. Many of the new machines and
configurations have dependencies that do not follow the device
ordering.
In order to be more flexible the concept of a boot state machine
is introduced. At the boundaries (entry and exit) of each state there
is opportunity to run callbacks. This ability allows one to schedule
actions to be performed without adding board-specific code to
the shared boot flow.
Change-Id: I9555845ca3045c6d4386b79438e5f426916fe457
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49740
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
While debugging a crash it was discovered that ld was inserting
address space for sections that were empty depending on section
address boundaries. This led to the assumption breaking down that
on-disk payload (code/data bits) was contiguous with the address
space. When that assumption breaks down relocation updates change
the wrong memory. Fix this by making the rmodule.ld linker script
put all code/data bits into a payload section.
Change-Id: Iae9406efa97690c2ce11737688906dc071de5c7b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49739
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Add three functions to edid.c:
void set_vbe_mode_info_valid(struct edid *edid, uintptr_t fb_addr)
takes an edid and uintptr_t, and fills in a static lb_framebuffer struct
as well as setting the static vbe_valid to 1 unless some problem
is found in the edid. The intent here is that this could be called from
the native graphics setup code on both ARM and x86.
int vbe_mode_info_valid(void)
returns value of the static vbe_valid.
void fill_lb_framebuffer(struct lb_framebuffer *framebuffer)
copies the static edid_fb to lb_framebuffer.
There is now a common vbe.h in src/include, removed the two special ones.
In general, graphics in coreboot is a mess, but graphics is always a
mess. We don't have a clean way to try two different ways to turn on
a device and use the one that works. One battle at a time. Overall,
things are much better.
The best part: this code would also work for ARM, which also uses EDID.
BUG=None
TEST=build coreboot with and without native graphics enabled. It builds.
Build with YABEL. It still builds.
BRANCH=NONE
Change-Id: Ieef2178e7e7fa850556c9af68e2d897a33aec871
Signed-off-by: Ronald G. Minnich <rminnich@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/48923
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Commit-Queue: Ronald G. Minnich <rminnich@chromium.org>
Tested-by: Ronald G. Minnich <rminnich@chromium.org>
Because pointers can be 32bit or 64bit big,
using them in the coreboot table requires the
OS and the firmware to operate in the same mode
which is not always the case. Hence, use 64bit
for all pointers stored in the coreboot table.
Guess we'll have to fix this up once we port to
the first 128bit machines.
BUG=chrome-os-partner:18638
TEST=USE=depthcharge emerge-link libpayload depthcharge chromeos-coreboot-link chromeos-bootimage
produces working image
BRANCH=none
Change-Id: I46fc1dad530e5230986f7aa5740595428ede4f93
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/48723
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
read_option was unified between ramstage and romstage a while ago.
However, it seems some invocations were not fixed accordingly.
This patch switches uart8250mem.c to use the new scheme.
Change-Id: I03cef4f6ee9188a6412c61d7ed34fbaff808a32b
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/3033
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
With CONFIG_DEBUG_COVERAGE enabled, the build currently fails with
src/lib/gcov-glue.c: In function 'fseek':
src/lib/gcov-glue.c:87:2: error: format '%d' expects argument of type 'int', but argument 4 has type 'long int' [-Werror=format]
src/lib/gcov-glue.c:87:2: error: format '%d' expects argument of type 'int', but argument 4 has type 'long int' [-Werror=format]
Change-Id: Iddaa601748c210d9dad06ae9dab2a3deaa635b2c
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/3032
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The ACPI NVS region was setup in place and there was a CBMEM
table that pointed to it. In order to be able to use NVS
earlier the CBMEM region is allocated for NVS itself during
the LPC device init and the ACPI tables point to it in CBMEM.
The current cbmem region is renamed to ACPI_GNVS_PTR to
indicate that it is really a pointer to the GNVS and does
not actually contain the GNVS.
Change-Id: I31ace432411c7f825d86ca75c63dd79cd658e891
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/2970
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
On certain architectures such as x86 the bootstrap processor
does most of the work. When CACHE_ROM is employed it's appropriate
to ensure that the caching enablement of the ROM is disabled so that
the caching settings are symmetric before booting the payload or OS.
Tested this on an x86 machine that turned on ROM caching. Linux did not
complain about asymmetric MTRR settings nor did the ROM show up as
cached in the MTRR settings.
Change-Id: Ia32ff9fdb1608667a0e9a5f23b9c8af27d589047
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2980
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Two convenience functions are added to operate on a range_entry:
- range_entry_update_tag() - update the entry's tag
- memranges_next_entry() - get the next entry after the one provide
These functions will be used by a follow on patch to the MTRR code
to allow hole punching in WB region when the default MTRR type is
UC.
Change-Id: I3c2be19c8ea1bbbdf7736c867e4a2aa82df2d611
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2924
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Downstream payloads may need to take advantage of caching the
ROM for performance reasons. Add the ability to communicate the
variable range MTRR index to use to perform the caching enablement.
An example usage implementation would be to obtain the variable MTRR
index that covers the ROM from the coreboot tables. Then one would
disable caching and change the MTRR type from uncacheable to
write-protect and enable caching. The opposite sequence is required
to tearn down the caching.
Change-Id: I4d486cfb986629247ab2da7818486973c6720ef5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2919
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The memrange infrastructure allows for keeping track of the
machine's physical address space. Each memory_range entry in
a memory_ranges structure can be tagged with an arbitrary value.
It supports merging and deleting ranges as well as filling in
holes in the address space with a particular tag.
The memrange infrastructure will serve as a shared implementation
for address tracking by the MTRR and coreboot mem table code.
Change-Id: Id5bea9d2a419114fca55c59af0fdca063551110e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2888
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Use the memrange library for keeping track of the address
space region types. The memrange library is built to do just
that for both the MTRR code and the coreboot memtable code.
Change-Id: Iee2a7c37a3f4cf388db87ce40b580f274384ff3c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2917
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Use the memrange library for keeping track of the address
space region types. The memrange library is built to do just
that for both the MTRR code and the coreboot memtable code.
Change-Id: Ic667df444586c2b5b5f2ee531370bb790d683a42
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2896
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
There are assumptions that COLLECT_TIMESTAMPS and CONSOLE_CBMEM
rely on EARLY_CBMEM_INIT. This isn't true in the face of
DYNAMIC_CBMEM as it provides the same properties as EARLY_CBMEM_INIT.
Therefore, allow one to select COLLECT_TIMESTAMPS and CONSOLE_CBMEM
when DYNAMIC_CBMEM is selected. Lastly, don't hard code the cbmem
implementation when COLLECT_TIMESTAMPS is selected.
Change-Id: I053ebb385ad54a90a202da9d70b9d87ecc963656
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2895
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The x86 linker script added a .textfirst section. In
order to properly link ramstage as a relocatable module
the .textfirst section needs to be included.
Also, the support for code coverage was added by including
the constructor section and symbols. Coverage has not been
tested as I suspect it might not work in a relocatable
environment without some tweaking. However, the section
and symbols are there if needed.
Change-Id: Ie1f6d987d6eb657ed4aa3a8918b2449dafaf9463
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2883
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
There were some cbfs calls that did not get transitioned
to the new cbfs API. Fix the callsites to conform to the
actual cbfs, thus fixing the copilation errors.
Change-Id: Ia9fe2c4efa32de50982e21bd01457ac218808bd3
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2880
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
coreboot tables are, unlike general system tables, a platform
independent concept. Hence, use the same code for coreboot table
generation on all platforms. lib/coreboot_tables.c is based
on the x86 version of the file, because some important fixes
were missed on the ARMv7 version lately.
Change-Id: Icc38baf609f10536a320d21ac64408bef44bb77d
Signed-off-by: Stefan Reinauer <reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/2863
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@google.com>
Tested-by: build bot (Jenkins)
This patch implements support for vboot firmware selection. The vboot
support is comprised of the following pieces:
1. vboot_loader.c - this file contains the entry point,
vboot_verify_firmware(), for romstage to call in order to perform
vboot selection. The loader sets up all the data for the wrapper
to use.
2. vboot_wrapper.c - this file contains the implementation calling the vboot
API. It calls VbInit() and VbSelectFirmware() with the data supplied
by the loader.
The vboot wrapper is compiled and linked as an rmodule and placed in
cbfs as 'fallback/vboot'. It's loaded into memory and relocated just
like the way ramstage would be. After being loaded the loader calls into
wrapper. When the wrapper sees that a given piece of firmware has been
selected it parses firmware component information for a predetermined
number of components.
Vboot result information is passed to downstream users by way of the
vboot_handoff structure. This structure lives in cbmem and contains
the shared data, selected firmware, VbInitParams, and parsed firwmare
components.
During ramstage there are only 2 changes:
1. Copy the shared vboot data from vboot_handoff to the chromeos acpi
table.
2. If a firmware selection was made in romstage the boot loader
component is used for the payload.
Noteable Information:
- no vboot path for S3.
- assumes that all RW firmware contains a book keeping header for the
components that comprise the signed firmware area.
- As sanity check there is a limit to the number of firmware components
contained in a signed firmware area. That's so that an errant value
doesn't cause the size calculation to erroneously read memory it
shouldn't.
- RO normal path isn't supported. It's assumed that firmware will always
load the verified RW on all boots but recovery.
- If vboot requests memory to be cleared it is assumed that the boot
loader will take care of that by looking at the out flags in
VbInitParams.
Built and booted. Noted firmware select worked on an image with
RW firmware support. Also checked that recovery mode worked as well
by choosing the RO path.
Change-Id: I45de725c44ee5b766f866692a20881c42ee11fa8
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2854
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The vboot firmware selection from romstage will need to
pass the resulting vboot data to other consumers. This will
be done using a cbmem entry.
Change-Id: I497caba53f9f3944513382f3929d21b04bf3ba9e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2851
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Dynamic cbmem is now a requirement for relocatable ramstage.
This patch replaces the reserve_* fields in the romstage_handoff
structure by using the dynamic cbmem library.
The haswell code is not moved over in this commit, but it should be
safe because there is a hard requirement for DYNAMIC_CBMEM when using
a reloctable ramstage.
Change-Id: I59ab4552c3ae8c2c3982df458cd81a4a9b712cc2
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2849
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Here's the great news: From now on you don't have to worry about
hitting the right io.h include anymore. Just forget about romcc_io.h
and use io.h instead. This cleanup has a number of advantages, like
you don't have to guard device/ includes for SMM and pre RAM
anymore. This allows to get rid of a number of ifdefs and will
generally make the code more readable and understandable.
Potentially in the future some of the code in the io.h __PRE_RAM__
path should move to device.h or other device/ includes instead,
but that's another incremental change.
Change-Id: I356f06110e2e355e9a5b4b08c132591f36fec7d9
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2872
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This patch fixes an issue for rmodules which are copied into memory
at the final load/link location. If the bss section is cleared for
that rmodule the relocation could not take place properly since the
relocation information was wiped by act of clearing the bss. The
reason is that the relocation information resides at the same
address as the bss section. Correct this issue by performing the
relocation before clearing the bss.
Change-Id: I01a124a8201321a9eaf6144c743fa818c0f004b4
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2822
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
This patch adds a parallel implementation of cbmem that supports
dynamic sizing. The original implementation relied on reserving
a fixed-size block of memory for adding cbmem entries. In order to
allow for more flexibility for adding cbmem allocations the dynamic
cbmem infrastructure was developed as an alternative to the fixed block
approach. Also, the amount of memory to reserve for cbmem allocations
does not need to be known prior to the first allocation.
The dynamic cbmem code implements the same API as the existing cbmem
code except for cbmem_init() and cbmem_reinit(). The add and find
routines behave the same way. The dynamic cbmem infrastructure
uses a top down allocator that starts allocating from a board/chipset
defined function cbmem_top(). A root pointer lives just below
cbmem_top(). In turn that pointer points to the root block which
contains the entries for all the large alloctations. The corresponding
block for each large allocation falls just below the previous entry.
It should be noted that this implementation rounds all allocations
up to a 4096 byte granularity. Though a packing allocator could
be written for small allocations it was deemed OK to just fragment
the memory as there shouldn't be that many small allocations. The
result is less code with a tradeoff of some wasted memory.
+----------------------+ <- cbmem_top()
| +----| root pointer |
| | +----------------------+
| | | |--------+
| +--->| root block |-----+ |
| +----------------------+ | |
| | | | |
| | | | |
| | alloc N |<----+ |
| +----------------------+ |
| | | |
| | | |
\|/ | alloc N + 1 |<-------+
v +----------------------+
In addition to preserving the previous cbmem API, the dynamic
cbmem API allows for removing blocks from cbmem. This allows for
the boot process to allocate memory that can be discarded after
it's been used for performing more complex boot tasks in romstage.
In order to plumb this support in there were some issues to work
around regarding writing of coreboot tables. There were a few
assumptions to how cbmem was layed out which dictated some ifdef
guarding and other runtime checks so as not to incorrectly
tag the e820 and coreboot memory tables.
The example shown below is using dynamic cbmem infrastructure.
The reserved memory for cbmem is less than 512KiB.
coreboot memory table:
0. 0000000000000000-0000000000000fff: CONFIGURATION TABLES
1. 0000000000001000-000000000002ffff: RAM
2. 0000000000030000-000000000003ffff: RESERVED
3. 0000000000040000-000000000009ffff: RAM
4. 00000000000a0000-00000000000fffff: RESERVED
5. 0000000000100000-0000000000efffff: RAM
6. 0000000000f00000-0000000000ffffff: RESERVED
7. 0000000001000000-000000007bf80fff: RAM
8. 000000007bf81000-000000007bffffff: CONFIGURATION TABLES
9. 000000007c000000-000000007e9fffff: RESERVED
10. 00000000f0000000-00000000f3ffffff: RESERVED
11. 00000000fed10000-00000000fed19fff: RESERVED
12. 00000000fed84000-00000000fed84fff: RESERVED
13. 0000000100000000-00000001005fffff: RAM
Wrote coreboot table at: 7bf81000, 0x39c bytes, checksum f5bf
coreboot table: 948 bytes.
CBMEM ROOT 0. 7bfff000 00001000
MRC DATA 1. 7bffe000 00001000
ROMSTAGE 2. 7bffd000 00001000
TIME STAMP 3. 7bffc000 00001000
ROMSTG STCK 4. 7bff7000 00005000
CONSOLE 5. 7bfe7000 00010000
VBOOT 6. 7bfe6000 00001000
RAMSTAGE 7. 7bf98000 0004e000
GDT 8. 7bf97000 00001000
ACPI 9. 7bf8b000 0000c000
ACPI GNVS 10. 7bf8a000 00001000
SMBIOS 11. 7bf89000 00001000
COREBOOT 12. 7bf81000 00008000
And the corresponding e820 entries:
BIOS-e820: [mem 0x0000000000000000-0x0000000000000fff] type 16
BIOS-e820: [mem 0x0000000000001000-0x000000000002ffff] usable
BIOS-e820: [mem 0x0000000000030000-0x000000000003ffff] reserved
BIOS-e820: [mem 0x0000000000040000-0x000000000009ffff] usable
BIOS-e820: [mem 0x00000000000a0000-0x00000000000fffff] reserved
BIOS-e820: [mem 0x0000000000100000-0x0000000000efffff] usable
BIOS-e820: [mem 0x0000000000f00000-0x0000000000ffffff] reserved
BIOS-e820: [mem 0x0000000001000000-0x000000007bf80fff] usable
BIOS-e820: [mem 0x000000007bf81000-0x000000007bffffff] type 16
BIOS-e820: [mem 0x000000007c000000-0x000000007e9fffff] reserved
BIOS-e820: [mem 0x00000000f0000000-0x00000000f3ffffff] reserved
BIOS-e820: [mem 0x00000000fed10000-0x00000000fed19fff] reserved
BIOS-e820: [mem 0x00000000fed84000-0x00000000fed84fff] reserved
BIOS-e820: [mem 0x0000000100000000-0x00000001005fffff] usable
Change-Id: Ie3bca52211800a8652a77ca684140cfc9b3b9a6b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2848
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Change "ERROR" to "WARNING" -- not finding the indicated file is usually
not a fatal error.
Change-Id: I0600964360ee27484c393125823e833f29aaa7e7
Signed-off-by: Shawn Nematbakhsh <shawnn@google.com>
Reviewed-on: http://review.coreboot.org/2833
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The standard string functions memcmp(), memset(), and memcpy()
are needed by most programs. The rmodules class provides a way to
build objects for the rmodules class. Those programs most likely need
the string functions. Therefore provide those standard functions to
be used by any generic rmodule program.
Change-Id: I2737633f03894d54229c7fa7250c818bf78ee4b7
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2821
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Instead of hard coding the policy for how a relocated ramstage
image is saved add an interface. The interface consists of two
functions. cache_loaded_ramstage() and load_cached_ramstage()
are the functions to cache and load the relocated ramstage,
respectively. There are default implementations which cache and
load the relocated ramstage just below where the ramstage runs.
Change-Id: I4346e873d8543e7eee4c1cd484847d846f297bb0
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2805
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Accessing the flash part where the ramstage resides can be slow
when loading it. In order to save time in the S3 resume path a copy
of the relocated ramstage is saved just below the location the ramstage
was loaded. Then on S3 resume the cached version of the relocated
ramstage is copied back to the loaded address.
This is achieved by saving the ramstage entry point in the
romstage_handoff structure as reserving double the amount of memory
required for ramstage. This approach saves the engineering time to make
the ramstage reentrant.
The fast path in this change will only be taken when the chipset's
romstage code properly initializes the s3_resume field in the
romstage_handoff structure. If that is never set up properly then the
fast path will never be taken.
e820 entries from Linux:
BIOS-e820: [mem 0x000000007bf21000-0x000000007bfbafff] reserved
BIOS-e820: [mem 0x000000007bfbb000-0x000000007bffffff] type 16
The type 16 is the cbmem table and the reserved section contains the two
copies of the ramstage; one has been executed already and one is
the cached relocated program.
With this change the S3 resume path on the basking ridge CRB shows
to be ~200ms to hand off to the kernel:
13 entries total:
1:95,965
2:97,191 (1,225)
3:131,755 (34,564)
4:132,890 (1,135)
8:135,165 (2,274)
9:135,840 (675)
10:135,973 (132)
30:136,016 (43)
40:136,581 (564)
50:138,280 (1,699)
60:138,381 (100)
70:204,538 (66,157)
98:204,615 (77)
Change-Id: I9c7a6d173afc758eef560e09d2aef5f90a25187a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2800
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
When CONFIG_EARLY_CBMEM_INIT is selected romstage is supposed to have
initialized cbmem. Therefore provide a weak function for the chipset
to implement named cbmem_get_table_location(). When
CONFIG_EARLY_CBMEM_INIT is selected cbmem_get_table_location() will be
called to get the cbmem location and size. After that cbmem_initialize()
is called.
Change-Id: Idc45a95f9d4b1d83eb3c6d4977f7a8c80c1ffe76
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2797
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The romstage_handoff structure can be utilized from different components
of the romstage -- some in the chipset code, some in coreboot's core
libarary. To ensure that all users handle initialization of a newly
added romstage_handoff structure properly, provide a common function to
handle structure initialization.
Change-Id: I3998c6bb228255f4fd93d27812cf749560b06e61
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2795
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
