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2020-06-17makefile: Supress Werror on clangOliver O'Halloran1-0/+5
We get a lot more warnings from clang so disable Werror for now so it fails to compile elsewhere. Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2020-06-17Makefile: Add -Werror to try-cflag so it works on clangOliver O'Halloran1-2/+2
Clangs prints warnings when it sees unknown command line options. Adding -Werror to the command line to upgrade them to errors results in clang exiting with exit code 1 which is what try-cflag expects. Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2020-06-11move the __this_cpu register to r16, reserve r13-r15Nicholas Piggin1-2/+9
There have been several bugs between Linux and OPAL caused by both using r13 for their primary per-CPU data address. This patch moves OPAL to use r16 for this, and prevents the compiler from touching r13-r15 (r14,r15 allow Linux to use additional fixed registers in future). This helps code to be a little more robust, and may make crashes in OPAL (or debugging with pdbg or in simulators) easier to debug by having easy access to the PACA. Later, if we allow interrupts (other than non-maskable) to be taken when running in skiboot, Linux's interrupt return handler does not restore r13 if the interrupt was taken in PR=0 state, which would corrupt the skiboot r13 register, so this allows for the possibility, although it will have to become a formal OPAL ABI requirement if we rely on it. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [oliver: x86_64 has an r13, but not an r16 so the tests broke] Signed-off-by: Oliver O'Halloran <oohall@gmail.com> wip: fix __this_cpu() in the test cases
2020-06-03Honor DEAD_CODE_ELIMINATION flagMauro S. M. Rodrigues1-0/+1
While trying to reduce the size of the final binary I found DEAD_CODE_ELIMINATION=1 but it didn't change the binary size and known ununsed functions were seen when inspecting the elf with nm. Even though the necessary parameters for compiler, -ffunction-sections and -fdata-sections, are set, ld's --gc-sections wasn't, so add it in order to honor the flag. Signed-off-by: Mauro S. M. Rodrigues <maurosr@linux.vnet.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2020-03-12Re-license IBM written files as Apache 2.0 OR GPLv2+Stewart Smith1-1/+1
SPDX makes it a simpler diff. I have audited the commit history of each file to ensure that they are exclusively authored by IBM and thus we have the right to relicense. The motivation behind this is twofold: 1) We want to enable experiments with coreboot, which is GPLv2 licensed 2) An upcoming firmware component wants to incorporate code from skiboot and code from the Linux kernel, which is GPLv2 licensed. I have gone through the IBM internal way of gaining approval for this. The following files are not exclusively authored by IBM, so are *not* included in this update (I will be seeking approval from contributors): core/direct-controls.c core/flash.c core/pcie-slot.c external/common/arch_flash_unknown.c external/common/rules.mk external/gard/Makefile external/gard/rules.mk external/opal-prd/Makefile external/pflash/Makefile external/xscom-utils/Makefile hdata/vpd.c hw/dts.c hw/ipmi/ipmi-watchdog.c hw/phb4.c include/cpu.h include/phb4.h include/platform.h libflash/libffs.c libstb/mbedtls/sha512.c libstb/mbedtls/sha512.h platforms/astbmc/barreleye.c platforms/astbmc/garrison.c platforms/astbmc/mihawk.c platforms/astbmc/nicole.c platforms/astbmc/p8dnu.c platforms/astbmc/p8dtu.c platforms/astbmc/p9dsu.c platforms/astbmc/vesnin.c platforms/rhesus/ec/config.h platforms/rhesus/ec/gpio.h platforms/rhesus/gpio.c platforms/rhesus/rhesus.c platforms/astbmc/talos.c platforms/astbmc/romulus.c Signed-off-by: Stewart Smith <stewart@linux.ibm.com> [oliver: fixed up the drift] Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2020-01-29stable/build: Do not convert warnings to errorVasant Hegde1-2/+11
During skiboot build, by default we convert all warnings to error. Because of this sometime skiboot stable branch fails to build on modern compiler. And we endup backporting build failure fixes to stable branches. Hence lets disable `-Werror` on skiboot stable branches (tagged version). Suggested-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Reviewed-by: Dan Horák <dan@danny.cz> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-12-16add little endian supportNicholas Piggin1-5/+33
This adds support for building LE skiboot with LITTLE_ENDIAN=1. This is not complete, notably PHB3, NPU* and *CAPI*, but it is sufficient to build and boot on mambo and OpenPOWER POWER9 systems. LE/ELFv2 is a nicer calling convention, and results in smaller image and less stack usage. It also follows the rest of the Linux/OpenPOWER stack moving to LE. The OPALv3 call interface still requires an ugly transition through BE for compatibility, but that is all handled on the OPAL side. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-11-14makefiles: Make attribute suggestions non-errorsOliver O'Halloran1-1/+5
Different versions of GCC don't have different ideas about when the suggestion should be made. That, combined with -Werror being enabled results in spurious compilation failures for dumb reasons. They're also really annoying when tinkering. They do however make good suggestions on occasion so leave them enabled with -Wno-error enabled so they don't cause compile failures. Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-10-03build: use -mcpu=power8Nicholas Piggin1-2/+2
POWER7 is no longer supported. Acked-by: Stewart Smith <stewart@flamingspork.com> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-07-26Makefiles: Remove --Wno-stringop-truncationOliver O'Halloran1-1/+0
To disable a warning you use the command line parameter: -Wno-<warning-name>, not --Wno-<warning-name> GCC seems to ignore parameters starting with a double dash, so we've been building with the stringop-trunction warning enabled for about a year now and no one has complained. Away it goes. Fixes: cd2b103f2488 ("Makefile: Check -Wno-stringop-truncation is supported") Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-07-26SPDX-ify all skiboot codeStewart Smith1-1/+3
Use Software Package Data Exchange (SPDX) to indicate license for each file that is unique to skiboot. At the same time, ensure the (C) who and years are correct. See https://spdx.org/ Signed-off-by: Stewart Smith <stewart@linux.ibm.com> [oliver: Added a few missing files] Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-07-19Silence sparse warning for version.cStewart Smith1-0/+1
version.c:1:12: warning: symbol 'version' was not declared. Should it be static? Signed-off-by: Stewart Smith <stewart@linux.ibm.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-06-19Disable -Waddress-of-packed-member for GCC9Stewart Smith1-1/+2
We throw a bunch of errors in errorlog code otherwise, which we should fix, but we don't *have* to yet. Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2019-05-15build: Makefile clean gcov filesNicholas Piggin1-0/+2
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2019-04-17Makefile: Build with symbolsJoel Stanley1-1/+1
Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2019-04-17build: link with --orphan-handling=warnNicholas Piggin1-0/+2
The linker can warn when the linker script does not explicitly place all sections. These orphan sections are placed according to heuristics, which may not always be desirable. Enable this warning. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2019-04-17build: -fno-asynchronous-unwind-tablesNicholas Piggin1-1/+1
skiboot does not use unwind tables, this option saves about 100kB, mostly from .text. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2019-03-29Bump allowed stack frame size for unit tests/host programsStewart Smith1-1/+6
We tend to have a lot more things inlined when building unit tests, so let's just up the -Wframe-larger-than to avoid hitting it. This time, it was noticed in travis-ci with the ubuntu:latest image. Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2019-03-05Makefile: Check -Wno-stringop-truncation is supportedJoel Stanley1-1/+1
The cross compiler on my system throws a fit as it does not understand this option: cc1: error: unrecognized command line option '-Wno-stringop-truncation' [-Werror] Fixes: 918b7233d3bb ("Add -Wno-stringop-truncation for GCC8") Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2019-02-21Makefile: Paper over gard and pflash coverage issuesAndrew Jeffery1-0/+8
`make coverage-report` gave the following error: (cd external/pflash; lcov -q -c -d . -o pflash.info --rc lcov_branch_coverage=1; sed -i -e 's%external/pflash/libflash%libflash%; s%external/pflash/ccan%ccan%' pflash.info) (cd external/gard; lcov -q -c -d . -o gard.info --rc lcov_branch_coverage=1; sed -i -e 's%external/gard/libflash%libflash%; s%external/gard/ccan%ccan%' gard.info) geninfo: WARNING: no .gcda files found in . - skipping! geninfo: WARNING: no .gcda files found in . - skipping! lcov -q -c -d . -d ccan/check_type/test/ -d ccan/str/test/ -d ccan/str/test/ -d ccan/list/test/ -d ccan/list/test/ -d ccan/list/test/ -d ccan/list/test/ -d ccan/list/test/ -d ccan/build_assert/test/ -d ccan/short_types/test/ -d ccan/short_types/test/ -d ccan/array_size/test/ -d ccan/container_of/test/ -d ccan/endian/test/ -d libc/test/ -d libc/test/ -d libc/test/ -d libc/test/ -o skiboot.info --rc lcov_branch_coverage=1 lcov -q -r skiboot.info 'external/pflash/*' -o skiboot.info lcov -q -r skiboot.info 'external/gard/*' -o skiboot.info lcov -q -a skiboot.info -a external/pflash/pflash.info -o skiboot.info lcov: ERROR: no valid records found in tracefile external/pflash/pflash.info make: *** [/home/andrew/src/open-power/skiboot/Makefile.main:315: skiboot.info] Error 255 And similar again for the gard tool. We should really untangle the build strategy for tools in external/, but in the mean time paper over the problem of generating the lcov output at the top level by ensuring we have a means to generate the necessary gcda files for lcov to consume. Signed-off-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-09-13clang: -Wno-error=ignored-attributesStewart Smith1-1/+2
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-07-26Makefile: remove try-cflags on no-altivec and no-vsxJoel Stanley1-4/+3
As Segher points out, any compiler that is capable of building skiboot will support these flags. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-07-26Makefile: Remove -mno-direct-move cflagJoel Stanley1-1/+0
GCC 8 warns that -mno-direct-move is depreciated. We had it there so we wouldn't use VSX registers in skiboot, as they are not saved/restored, however Segher confirms: > if you already have -mno-altivec then -mno-direct-move does zilch So it was never doing anything. Resolves: open-power/skiboot#186 Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-05-29Add -Wno-stringop-truncation for GCC8Stewart Smith1-0/+1
This warning appears to not be particularly useful if you ever actually *want* to truncate a string. Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-05-09Makefile: be precise about clang targetJoel Stanley1-10/+1
While CROSS can be set to a ppc64le toolchian, we don't want to build for that target. Hardcode the target to powerpc64-linux-gnu. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-05-04Makefile: Use LD to link the final binaryJoel Stanley1-3/+4
We were using gcc instead of ld. This isn't required, as we're disabling all of the things that gcc could do for us. This helps enable clang as the compiler, with GNU ld used for the final linking step. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-05-04Makefile: Disable warnings to make clang happyJoel Stanley1-0/+11
Clang doesn't like some of the warnings we have, so silence the ones we know about in order to enable the build to succeed. These should be investigated and removed in once the code issues are resolved. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-05-04Makefile: Add additional flags when using clangJoel Stanley1-0/+23
Clang needs to be told which target it's building for, as unlike GCC the one binary targets many architectures. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-05-04Makefile: Put some ppc options behind try-cflag testsJoel Stanley1-3/+3
Clang errors out when attempting to build with these flags present. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-04-11Makefile: Make it easier to find the docsJoel Stanley1-1/+4
Ad a top level 'doc' target that builds the html docs when the user types 'make doc'. Users who want other targets know that the docs live under docs/, so can go looking there. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-02-28build: use thin archives rather than incremental linkingNicholas Piggin1-5/+9
This changes to build system to use thin archives rather than incremental linking for built-in.o, similar to recent change to Linux. built-in.o is renamed to built-in.a, and is created as a thin archive with no index, for speed and size. All built-in.a are aggregated into a skiboot.tmp.a which is a thin archive built with an index, making it suitable or linking. This is input into the final link. The advantags of build size and linker code placement flexibility are not as great with skiboot as a bigger project like Linux, but it's a conceptually better way to build, and is more compatible with link time optimisation in toolchains which might be interesting for skiboot particularly for size reductions. Size of build tree before this patch is 34.4MB, afterwards 23.1MB. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2018-02-13stb: Put correct label (for skiboot) into containerStewart Smith1-2/+2
Hostboot will expect the label field of the stb header to contain "PAYLOAD" for skiboot or it will fail to load and run skiboot. The failure looks something like this: 53.40896|ISTEP 20. 1 - host_load_payload 53.65840|secure|Secureboot Failure plid = 0x90000755, rc = 0x1E07 53.65881|System shutting down with error status 0x1E07 53.67547|================================================ 53.67954|Error reported by secure (0x1E00) PLID 0x90000755 53.67560| Container's component ID does not match expected component ID 53.67561| ModuleId 0x09 SECUREBOOT::MOD_SECURE_VERIFY_COMPONENT 53.67845| ReasonCode 0x1e07 SECUREBOOT::RC_ROM_VERIFY 53.67998| UserData1 : 0x0000000000000000 53.67999| UserData2 : 0x0000000000000000 53.67999|------------------------------------------------ 53.68000| Callout type : Procedure Callout 53.68000| Procedure : EPUB_PRC_HB_CODE 53.68001| Priority : SRCI_PRIORITY_HIGH 53.68001|------------------------------------------------ 53.68002| Callout type : Procedure Callout 53.68003| Procedure : EPUB_PRC_FW_VERIFICATION_ERR 53.68003| Priority : SRCI_PRIORITY_HIGH 53.68004|------------------------------------------------ Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com> Tested-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-12-20Add support for new gcc 7 parametrized stack protectorBenjamin Herrenschmidt1-8/+18
This gives us per-cpu guard values as well. For now I just xor a magic constant with the CPU PIR value. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-12-18libstb/(create|print)-container: Sync with sb-signing-utilsStewart Smith1-2/+2
The sb-signing-utils project has improved upon the skeleton create-container tool that existed in skiboot, including being able to (quite easily) create *signed* images. This commit brings in that code (and makes it build in the skiboot build environment) and updates our skiboot.*.stb generating code to use the development keys. We also update print-container as well, syncing it with the upstream project. Derived from github.com:open-power/sb-signing-utils.git at v0.3-5-gcb111c03ad7f (and yes, changes here will be submitted upstream) Cc: Dave Heller <hellerda@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-12-18make check: Make valgrind optionalMichael Ellerman1-1/+7
To (slightly) lower the barrier for contributions, we can make valgrind optional with just a small amount of plumbing. This allows make check to run successfully without valgrind. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-22build: CFLAGS compile with -mcpu=power7Nicholas Piggin1-1/+2
The gcc powerpc64le cross compiler for x86 builds with -mcpu=power8 by default, which does not match the powerpc64 compiler, and is not the right thing to do for POWER7 support. Pass -mcpu=power7 explicitly. This may cause a change of target on existing BE toolchains. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-22build: CFLAGS compile with -fpie and -fno-picNicholas Piggin1-1/+1
When gcc is configured with --enabled-default-pie, sets -fpic which does not need to be enabled, so remove it. Pass -fpie explicitly as well just to be careful. This was observed with the powerpc64le cross compiler for Debian. This allows the powerpc64le toolchain to compile an almost identical binary as the powerpc64 toolchain. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-22build: LDFLAGS pass -pie flag explicitly to ldNicholas Piggin1-0/+1
When building with some toolchains, the gcc -pie option does not enable the linker pie without explicitly passing it to ld, resulting in a non-PIE binary that silently fails (due to relocation failure). This was observed with the powerpc64le cross compiler for Debian. Pass -Wl,-pie explicitly, which allows the powerpc64le toolchain to create a position independnet binary that boots. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-01Makefile.check: Fix `make check`Cyril Bur1-4/+3
Recent reworks were tested on the travis-ci system. Unfortunately, there are configurations of running `make check` which the travis-ci doesn't do. On some systems extra problems crop up. Removing the stack size check is only done for the host compiler as the check is only critical for skiboot its self where stack space is contained. Signed-off-by: Cyril Bur <cyril.bur@au1.ibm.com> Reviewed-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-19gcov: properly handle gard and pflash code coverageStewart Smith1-1/+12
We end up with a bit of a nasty hack to count the libflash symlinks in gard and pflash as part of libflash code coverage, but it does work and is unlikely to break anytime soon. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-19Makefile: gard/pflash targets for CI build with HOSTCFLAGS/HOSTGCOVFLAGSStewart Smith1-2/+2
This enables us to do coverage reports on gard/pflash. Reviewed-by: Cyril Bur <cyril.bur@au1.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-27skiboot: Add a library for xzHemant Kumar1-2/+3
This patch adds a library for compression/decompression using xz. The code comes from http://tukaani.org/xz/embedded.html. The codebase has been kept as-is with a new Makefile.inc. For libxz/Makefile.inc and Makefile.main : Signed-off-by: Hemant Kumar <hemant@linux.vnet.ibm.com> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Hemant Kumar <hemant@linux.vnet.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-05-10pore: Always use libporeOliver O'Halloran1-7/+2
In the days of yore libpore was closed source and people wanted the option to not use it. That's no longer the case so lets ditch all the #ifdef crap. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-04-07libstb/create-container: Add full container build and sign with imprint keysDave Heller1-2/+2
This adds support for writing all the public key and signature fields to the container header, and for dumping the prefix and software headers so they may may be signed, and for signing those headers with the imprint keys. Signed-off-by: Dave Heller <hellerda@linux.vnet.ibm.com> [stewart@linux.vnet.ibm.com: fixup warnings&build, include openssl-devel in CI dockerfiles] Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-03-16Makefile: Update clean target for stbMichael Neuling1-1/+1
stb leaves a bunch of files around even after clean. Fix this. Signed-off-by: Michael Neuling <mikey@neuling.org> [stewart@linux.vnet.ibm.com: use explicit TARGET rather than *.stb] Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-02-06Dead code and data eliminationNicholas Piggin1-1/+9
Add an experimental option to do basic dead code and data elimintation with -ffunction-sections/-fdata-sections/--gc-sections. This saves about 80kB of text/data. Also remove the use of of -ffunction-sections by default. This predates git history, but I don't think there is a good reason to use it without --gc-sections. The GCC manual says: Only use these options when there are significant benefits from doing so. When you specify these options, the assembler and linker create larger object and executable files and are also slower. You cannot use gprof on all systems if you specify this option, and you may have problems with debugging if you specify both this option and -g. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-02-06Initial support for the ELFv2 ABINicholas Piggin1-1/+10
Provide an experimental option to compile using ELFv2 ABI even on big endian builds. ELFv2 + BE is not officially supported by the toolchain, but it works quite well. It may be useful as a small step toward a little-endian build. This saves about 200kB of text/data. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-12-22Makefile: Disable stack protector due to gcc problemsBenjamin Herrenschmidt1-3/+9
Depending on how it was built, gcc will use the canary from a global (works for us) or from the TLS (doesn't work for us and accesses random stuff instead). Fixing that would be tricky. There are talks of adding a gcc option to force use of globals, but in the meantime, disable the stack protector Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [stewart@linux.vnet.ibm.com: add -fno-stack-protector] Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-12-22Makefile: Use -ffixed-r13Benjamin Herrenschmidt1-0/+1
We use r13 for our own stuff, make sure it's properly fixed Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-11-24stb: create-container and wrap skiboot in Secure/Trusted Boot containerStewart Smith1-0/+7
We produce **UNSIGNED** skiboot.lid.stb and skiboot.lid.xz.stb as build artifacts These are suitable blobs for flashing onto Trusted Boot enabled op-build builds *WITH* the secure boot jumpers *ON* (i.e. *NOT* in secure mode). It's just enough of the Secure and Trusted Boot container format to make Hostboot behave. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> Tested-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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