summaryrefslogtreecommitdiff
path: root/src/arch/arm/armv7/cpu.S
AgeCommit message (Collapse)Author
2016-09-12arch/arm: Add armv7-r configurationHakim Giydan
This change adds armv7-r support for all stages. armv7-r is an ARM processor based on the Cortex-R series. Currently, there is support for armv7-a and armv7-m and armv7-a files has been modfied to accommodate armv7-r by adding ENV_ARMV7_A, ENV_ARMV7_R and ENV_ARMV7_M constants to src/include/rules.h. armv7-r exceptions support will added in a later time. Change-Id: If94415d07fd6bd96c43d087374f609a2211f1885 Signed-off-by: Hakim Giydan <hgiydan@marvell.com> Reviewed-on: https://review.coreboot.org/15335 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
2015-04-21armv7: preserve bootblock invocation parameterVadim Bendebury
Some platforms may pass as a parameter the maskrom or vendor startup code information when calling the bootblock. Make sure the bootblock startup code saves this parameter for use by coreboot. As we don't want to touch memory before caches are initialized, save the passed in parameter in r10 for the duration of cache initialization. Added warning comments to help enforcing that cache initialization code does not touch r10. BRANCH=storm BUG=chrome-os-partner:30623 TEST=with the rest of the patches applied see the QCA uber-sbl report in the coreboot console output. Change-Id: Ic6a09e8c3cf13ac4f2d12ee91c7ab41bc9aa95da Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: e41584f769eb042604883275b0d0bdfbf5b0d358 Original-Change-Id: I517a79dc95040326f46f0b80ee4e74bdddde8bf4 Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/255144 Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Original-Commit-Queue: Vadim Bendebury <vbendeb@gmail.com> Reviewed-on: http://review.coreboot.org/9842 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-17armv7: work around hang in bootblock startup codeDaisuke Nojiri
broadcom cygnus hangs if we clean caches by dcache_clean_invalidate_all at bootblock entry point. this change makes startup code call dcache_invalidate_all instead. other boards theoretically should not be affected as long as maskrom does not hand off execution to bootblock with dirty cache. BUG=chrome-os-partner:36648,chrome-os-partner:36691 BRANCH=broadcom-firmware TEST=boot cygnus b0 board, messages were printed on console: coreboot-688aae9-dirty bootblock Mon Feb 9 13:21:02 PST 2015 starting... Exception handlers installed. Change-Id: I05777ca525c97bb3d7cbb5ea7e872a602dcd5a19 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 59de5328df9d0502a3b3f7c624d3e86e038de50e Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Change-Id: I9b8850846b941e7e62712e90cc28ad14a68da393 Original-Reviewed-on: https://chromium-review.googlesource.com/251304 Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-on: http://review.coreboot.org/9762 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-12-15arm: Fix minor mistake in cache maintenance assemblyJulius Werner
Turns out that when you clear 28 bits starting with bit 3, you leave bit 31 standing. Ooops... This shouldn't really matter since that bit is reserved/SBZ in CLIDR anyway, but it's still nice to fix it. This whole thing should really be an AND for clarity anyway in my opinion. Bug found in upstream NetBSD (who would've thought...). BUG=None TEST=Still boots. Change-Id: Ic826e82d58fd1ce984971afea3dfa9296f746d9f Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/193300 Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit d270c0ec18b74b272451c456cbf07e99d95896cb) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Reviewed-on: http://review.coreboot.org/7745 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-11-10arm: Redesign, clarify and clean up cache related codeJulius Werner
This patch changes several cache-related pieces to be cleaner, faster or more correct. The largest point is removing the old arm_invalidate_caches() function and surrounding bootblock code to initialize SCTLR and replace it with an all-assembly function that takes care of cache and SCTLR initialization to bring the system to a known state. It runs without stack and before coreboot makes any write accesses to be as compatible as possible with whatever state the system was left in by preceeding code. This also finally fixes the dreaded icache bug that wasted hundreds of milliseconds during boot. Old-Change-Id: I7bb4995af8184f6383f8e3b1b870b0662bde8bd4 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/183890 (cherry picked from commit 07a35925dc957919bf88dfc90515971a36e81b97) nyan_big: apply cache-related changes from nyan This applies the same changes from 07a3592 that were applied to nyan. Old-Change-Id: Idcbe85436d7a2f65fcd751954012eb5f4bec0b6c Reviewed-on: https://chromium-review.googlesource.com/184551 Commit-Queue: David Hendricks <dhendrix@chromium.org> Tested-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 4af27f02614da41c611aee2c6d175b1b948428ea) Squashed the followup patch for nyan_big into the original patch. Change-Id: Id14aef7846355ea2da496e55da227b635aca409e Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> (cherry picked from commit 4cbf25f8eca3a12bbfec5b015953c0fc2b69c877) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Reviewed-on: http://review.coreboot.org/6993 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-09-29arm: Fix up new cache flush algorithm and replace dcache_*_all() with itJulius Werner
This patch fixes the remaining few bugs in our shiny new cache iteration by set/way/level algorithm to actually make it work: It makes it start from cache level 0 (previously it would always start at LoC and be "done" instantly), fixes up the two shifts that isolate the set bits at the end (which didn't seem to account for the fact that the first shift affects the second), and throws an S bit on that last shift so that it actually affects the conditionals after it. In addition, also moves the next_level block to the top so that we can share (and thus eliminate) some code at initialization, and turns the whole thing into a thrice-instantiated macro to create functions that fit our existing interface. Change-Id: I1338a589cbb37d74ea6e7a3d4f67ff827e24edbe Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/183879 Reviewed-by: Stefan Reinauer <reinauer@google.com> Reviewed-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 6d94f8330191c316fe093ddb5288329453da8a4b) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6932 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-09-29arm: Import armv7_dcache_wbinv_all function from NetBSDJulius Werner
This patch pulls in NetBSD's full cache flushing algorithm for ARM, to replace our old, slow and slightly overzealous C-only implementation. It's a beautiful piece of code that manages to run on only caller-saved registers (meaning it doesn't need to write to memory) in a very tight loop, and it's BSD-licensed to boot (which we need for libpayload). Unfortunately it's also not quite correct, but I can fix that. Pulling the original in a separate commit to make it more obvious what changes are mine. Change-Id: I7a71c9e570866a6e25f756cb09ae2b6445048d83 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/183878 Reviewed-by: Stefan Reinauer <reinauer@google.com> Reviewed-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 4698467320613d7ddc39714f40aacbc990af9399) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6931 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>