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2018-09-12libpayload/x86/delay: Add an x86 arch_ndelayRaul E Rangel
This method has a pause instruction to help the CPU relax a little bit. Measuring grunt it saves about 80mW. BUG=b:109749762 TEST=Made sure that grunt boots. Change-Id: I045a941ed42fcc4f2dbdd65b5cbb42d84813f50c Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/28244 Reviewed-by: Martin Roth <martinroth@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-09-12libpayload/arch/x86: Add support for initializing the APICRaul E Rangel
This is just the bare minimum required to initialize the APIC. I only support xAPIC and chose not to support x2APIC. We can add that functionality later when it's required. I also made the exception dispatcher call apic_eoi so that the callbacks won't forget to call it. BUG=b:109749762 TEST=Booted grunt and verified that depthcharge continued to function and that linux booted correctly. Also verified GDB still works. Change-Id: I420a4eadae84df088525e727b481089ef615183f Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-on: https://review.coreboot.org/28241 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2015-07-01libpayload: Keep stack boundary small on x86Stefan Reinauer
There is no measurable performance impact, but this positively impacts the memory used by payloads. Change-Id: Ib2bdba4a7bf2a4c2391a20b3225bbb44422d3194 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10751 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-01-09libpayload: Add remote GDB supportJulius Werner
This patch adds the ability to attach a GDB host through the UART to a running payload. Libpayload implements a small stub that can parse and respond to the GDB remote protocol and provide the required primitives (reading/writing registers/memory, etc.) to allow GDB to control execution. The goal of this implementation is to be as small and uninvasive as possible. It implements only the minimum amount of primitives required, and relies on GDB's impressive workaround capabilities (such as emulating breakpoints by temporarily replacing instructions) for the more complicated features. This way, a relatively tiny amount of code on the firmware side opens a vast range of capabilities to the user, not just in debugging but also in remote-controlling the firmware to change its behavior (e.g. through GDBs ability to modify variables and call functions). By default, a system with the REMOTEGDB Kconfig will only trap into GDB when executing halt() (including the calls from die_if(), assert(), and exception handlers). In addition, payloads can manually call gdb_enter() if desired. It will print a final "Ready for GDB connection." on the serial, detach the normal serial output driver and wait for the commands that GDB starts sending on attach. Based on original implementation by Gabe Black <gabeblack@chromium.org>. BUG=chrome-os-partner:18390 TEST=Boot a GDB enabled image in recovery mode (or get it to hit a halt()), close your terminal, execute '<toolchain>-gdb --symbols /build/<board>/firmware/depthcharge_gdb/depthcharge.elf --directory ~/trunk/src/third_party/coreboot/payloads/libpayload --directory ~/trunk/src/platform/depthcharge --directory ~/trunk/src/platform/vboot_reference --ex "target remote <cpu_uart_pty>"' and behold the magic. (You can also SIGSTOP your terminal's parent shell and the terminal itself, and SIGCONT them in reverse order after GDB exits. More convenient wrapper tools to do all this automatically coming soon.) Original-Change-Id: Ib440d1804126cdfdac4a8801f5015b4487e25269 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/202563 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit 9c4a642c7be2faf122fef39bdfaddd64aec68b77) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I9238b4eb19d3ab2c98e4e1c5946cd7d252ca3c3b Reviewed-on: http://review.coreboot.org/8119 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-01-09libpayload: Introduce new Kconfig to explicitly allow GPL codeJulius Werner
There have been leaks of GPL code into libpayload for a while now, for new features or improvements that require third party code with no adequate alternative among BSD-licensed software. It seems silly and counter-productive to keep holding back features and performance improvements from libpayload for a use-case (proprietary payloads) that doesn't even seem to be implemented anywhere to date. Open-source payloads should not need to suffer to appease commercial ones. Instead, this patch introduces a new Kconfig option to explicitly allow inclusion of GPL code. It will use Kconfig dependencies and/or Makefile rules to ensure that no GPL code can end up in the final payload if that option is unset, allowing proprietary payloads to keep working with the existing BSD-licensed feature set. New features and patches (that are sufficiently separate and self-contained to allow guarding through this config option) can choose whether to import GPL code, and need to depend on this option if they do. Also clean up all (known) existing uses of GPL code to depend on the new option, add some recent third-party imports to the LICENSES file, and relicense the selfboot.c files to BSD with permission of the author. BUG=chrome-os-partner:24957 TEST=Compiled Falco and Nyan_Big both with and without the new option, disassembled output binaries to ensure that memcpy() looks as expected. Original-Change-Id: I6e3a75b1a8e46291c75a876844c7a01f7d3f2a0e Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Signed-off-by: Hung-Te Lin <hungte@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/203513 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit d8e5a9fdf583b5ac861f34baea6a16c4d8536512) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I446fef028264c793b946dd9f765e446bf708b4db Reviewed-on: http://review.coreboot.org/8118 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-12-30libpayload: Provide selfboot function.Hung-Te Lin
The calling convention of payload entry function is different by architecture. For example, X86 takes no arguments and ARM needs first param to be a cb_header_ptr*. To help payloads load and execute other payloads easily and correctly, we should provide the selfboot() function in libpayload, using same prototype as defined in coreboot environment. BUG=none TEST=emerge-nyan libpayload # pass BRANCH=none Original-Change-Id: I8f1cb2c0df788794b2f6f7f5500a3910328a4f84 Original-Signed-off-by: Hung-Te Lin <hungte@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/199503 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit 1e916cf021ce68886eb9668982c392eadedc7b7e) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I7279ef27f49ef581d25a455dd8f1f2f7f1ba58cb Reviewed-on: http://review.coreboot.org/7907 Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins)
2014-09-15libpayload: x86: Add support for catching processor exceptions.Gabe Black
This functionality is already available for ARM, so lets add it to x86 as well. We'll want to be able to hook exceptions when running as a remote GDB target. Change-Id: I42f640b08eb9eb86a1bcab3c327f7780191a2eb5 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/179601 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 5b8cf0c9f70a7e14766a2b095e6739a8d6321a34) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6898 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-05libpayload: Change CONFIG_* to CONFIG_LP_* in the kconfig.Gabe Black
When libpayload header files are included in the payload itself, it's possible that the payloads config settings will conflict with the ones in libpayload. It's also possible for the libpayload config settings to conflict with the payloads. To avoid that, the libpayload config settings have _LP_ (for libpayload) added to them. The symbols themselves as defined in the Config.in files are still the same, but the prefix added to them is now CONFIG_LP_ instead of just CONFIG_. Change-Id: Ib8a46d202e7880afdeac7924d69a949bfbcc5f97 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://gerrit.chromium.org/gerrit/65303 Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 23e866da20862cace0ed2a67d6fb74056bc9ea9a) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6427 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2013-02-12libpayload: New CBFS to support multiple firmware media sources.Hung-Te Lin
Upgrade CBFS in libpayload to use new media-based implementation from coreboot ( http://review.coreboot.org/#/c/2182/ ). Old CBFS functions (cbfs_find, cbfs_find_file, get_cbfs_header) are still supported, although the recommended way is to use new CBFS API. To migrate your existing x86 payload source: - Change cbfs_find to cbfs_get_file - Change cbfs_find_file to cbfs_get_file_content - Prefix every CBFS call with a CBFS_DEFAULT_MEDIA argument. Ex, char *jpeg_data = cbfs_find_file("splash.jpg", CBFS_TYPE_BOOTSPLASH); => char *jpeg_data = cbfs_get_file_content( CBFS_DEFAULT_MEDIA, "splash.jpg", CBFS_TYPE_BOOTSPLASH); The legacy setup_cbfs_from_{ram,flash} is also supported, although the better equivalent is to make a new media instance: struct cbfs_media ram_media; init_cbfs_ram_media(&ram_media, start, size); char *data = cbfs_get_file_content(&ram_media, "myfile", my_type); Verified by being successfully linked with filo. Change-Id: If797bc7e3ba975d7e3be905c59424f7a93b8ce11 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2191 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
2012-12-14libpayload: rename i386 to x86Stefan Reinauer
Change-Id: Ia9170bd3d04e76dbf9321ca7ea4be23b5e468d21 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2033 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>