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In order to have a proper runtime-modifyable page table API (e.g. to
remap DRAM after it was intialized), we need to remove any external
bookkeeping kept in global variables (which do not persist across
stages) from the MMU code. This patch implements this in a similar way
as it has recently been done for ARM32 (marking free table slots with a
special sentinel value in the first PTE that cannot occur as part of a
normal page table).
Since this requires the page table buffer to be known at compile-time,
we have to remove the option of passing it to mmu_init() at runtime
(which I already kinda deprecated before). The existing Tegra chipsets
that still used it are switched to instead define it in memlayout in a
minimally invasive change. This might not be the best way to design this
overall (I think we should probably just throw the tables into SRAM like
on all other platforms), but I don't have a Tegra system to test so I'd
rather keep this change low impact and leave the major redesign for
later.
Also inlined some single-use one-liner functions in mmu.c that I felt
confused things more than they cleared up, and fixed an (apparently
harmless?) issue with forgetting to mask out the XN page attribute bit
when casting a table descriptor to a pointer.
BRANCH=None
BUG=None
TEST=Compiled Ryu and Smaug. Booted Oak.
Change-Id: Iad71f97f5ec4b1fc981dbc8ff1dc88d96c8ee55a
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/12075
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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arch_program_segment_loaded ensures that the program segment loaded is
synced back from the cache to PoC. dcache_flush_all on arm64 does not
guarantee PoC in case of MP systems. Thus, it is important to track
and sync back all the required segments using
arch_program_segment_loaded. Use this function in rmodules as well
instead of cache_sync_instructions which guarantees sync upto PoC.
BUG=chrome-os-partner:37546
BRANCH=None
TEST=Boots into depthcharge on foster
Change-Id: I64c2dd5e40ea59fa31f300174ca0d0aebcf8041d
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 35ba0b882b86ff2c29ac766e1d65f403c8346247
Original-Change-Id: I964aa09f0cafdaab170606cd4b8f2e027698aee7
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/260908
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/10173
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
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This patchs introduces level specific data cache maintenance operations
to cache_helpers.S. It's derived form ARM trusted firmware repository.
Please reference here.
https://github.com/ARM-software/arm-trusted-firmware/blob/master/
lib/aarch64/cache_helpers.S
BRANCH=none
BUG=none
TEST=boot on smaug/foster
Change-Id: Ib58a6d6f95eb51ce5d80749ff51d9d389b0d1343
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: b3d1a16bd0089740f1f2257146c771783beece82
Original-Change-Id: Ifcd1dbcd868331107d0d47af73545a3a159fdff6
Original-Signed-off-by: Joseph Lo <josephl@nvidia.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/265826
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9979
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
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In order to not duplicate the instruction cache invalidation
sequence provide a common routine to perform the necessary
actions. Also, use it in the appropriate places.
BUG=None
BRANCH=None
TEST=Built on ryu.
Change-Id: I29ea2371d034c0193949ebb10beb840e7215281a
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: d5ab28b5d73c03adcdc0fd4e530b39a7a8989dae
Original-Change-Id: I8d5f648c995534294e3222e2dc2091a075dd6beb
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/260949
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9871
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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The CCSIDR_EL1 register has cache attribute information
for a given cache selection in CSSELR_EL1. However, the
cache isn't being selected before reading CCSIDR_EL1.
Instead use CTR_EL0 which better fits with the semantics
of dcache_line_bytes(). CTR_EL0 has the minimum data cache
line size of all caches in the system encoded in 19:16 encoded
as lg(line size in words).
BUG=None
TEST=Built.
Original-Change-Id: I2cbf888a93031736e668918de928c3a99c26bedd
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/208720
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit 8d5dfba35d74fc4c6ee14365a2e9d9ed9f43115d)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I1db47ff5850c276d0246ac67e8b96f7ed19016c0
Reviewed-on: http://review.coreboot.org/8642
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Correct function names to make them consistent with generic calling name
BUG=None
BRANCH=None
TEST=Compiles successfully for rush
Original-Change-Id: I50499936e1c8da0aafd7e36a22c2c6ab373230f6
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/205582
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 16668529527224fca3086ee88955d29e3a268516)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I449e63b05680ca12ae81a3260fc03836686d7317
Reviewed-on: http://review.coreboot.org/8469
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@google.com>
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Add support for library functions required to access different system registers:
1) PSTATE and special purpose registers
2) System control registers
3) Cache-related registers
4) TLB maintenance registers
5) Misc barrier related functions
BUG=None
BRANCH=None
TEST=Compiles successfully
Original-Change-Id: I8809ca2b67b8e560b34577cda1483ee009a1d71a
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/203490
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit 5da840c5d1f3d8fdf8cc0d7c44772bf0cef03fbb)
armv8: GPL license armv8 lib
BUG=None
BRANCH=None
TEST=Compiles successfully.
Original-Change-Id: Ibe0f09ef6704ad808cc482ffec27a4db32d7f6fd
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/250950
Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit bc115869bb0bcedbc284677ca5743b9ab40bfc7e)
Get the library and the GPL license in a single commit.
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I4753a6b0d13a6f7515243bfa8e749e250fdd749d
Reviewed-on: http://review.coreboot.org/8465
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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Add support for enabling different coreboot stages (bootblock, romstage and
ramstage) to have arm64 architecture. Most of the files have been copied over
from arm/ or arm64-generic work.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://chromium-review.googlesource.com/197397
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit 033ba96516805502673ac7404bc97e6ce4e2a934)
This patch is essentially a squash of aarch64 changes made by
these patches:
d955885 coreboot: Rename coreboot_ram stage to ramstage
a492761 cbmem console: Locate the preram console with a symbol instead of a sect
96e7f0e aarch64: Enable early icache and migrate SCTLR from EL3
3f854dc aarch64: Pass coreboot table in jmp_to_elf_entry
ab3ecaf aarch64/foundation-armv8: Set up RAM area and enter ramstage
25fd2e9 aarch64: Remove CAR definitions from early_variables.h
65bf77d aarch64/foundation-armv8: Enable DYNAMIC_CBMEM
9484873 aarch64: Change default exception level to EL2
7a152c3 aarch64: Fix formatting of exception registers dump
6946464 aarch64: Implement basic exception handling
c732a9d aarch64/foundation-armv8: Basic bootblock implementation
3bc412c aarch64: Comment out some parts of code to allow build
ab5be71 Add initial aarch64 support
The ramstage support is the only portion that has been tested
on actual hardware. Bootblock and romstage support may require
modifications to run on hardware.
Change-Id: Icd59bec55c963a471a50e30972a8092e4c9d2fb2
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6915
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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