d37ab454d4
In order to provide some insight on what code is executed during coreboot's run time and how well our test scenarios work, this adds code coverage support to coreboot's ram stage. This should be easily adaptable for payloads, and maybe even romstage. See http://gcc.gnu.org/onlinedocs/gcc/Gcov.html for more information. To instrument coreboot, select CONFIG_COVERAGE ("Code coverage support") in Kconfig, and recompile coreboot. coreboot will then store its code coverage information into CBMEM, if possible. Then, run "cbmem -CV" as root on the target system running the instrumented coreboot binary. This will create a whole bunch of .gcda files that contain coverage information. Tar them up, copy them to your build system machine, and untar them. Then you can use your favorite coverage utility (gcov, lcov, ...) to visualize code coverage. For a sneak peak of what will expect you, please take a look at http://www.coreboot.org/~stepan/coreboot-coverage/ Change-Id: Ib287d8309878a1f5c4be770c38b1bc0bb3aa6ec7 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2052 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Martin Roth <martin@se-eng.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2009 coresystems GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#ifndef _CBMEM_H_
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#define _CBMEM_H_
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/* Reserve 128k for ACPI and other tables */
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#if CONFIG_CONSOLE_CBMEM
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#define HIGH_MEMORY_DEF_SIZE ( 256 * 1024 )
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#else
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#define HIGH_MEMORY_DEF_SIZE ( 128 * 1024 )
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#endif
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#if CONFIG_HAVE_ACPI_RESUME
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#define HIGH_MEMORY_SAVE (CONFIG_RAMTOP - CONFIG_RAMBASE)
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#define HIGH_MEMORY_SIZE (HIGH_MEMORY_SAVE + CONFIG_HIGH_SCRATCH_MEMORY_SIZE + HIGH_MEMORY_DEF_SIZE)
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/* Delegation of resume backup memory so we don't have to
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* (slowly) handle backing up OS memory in romstage.c
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*/
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#define CBMEM_BOOT_MODE 0x610
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#define CBMEM_RESUME_BACKUP 0x614
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#else /* CONFIG_HAVE_ACPI_RESUME */
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#define HIGH_MEMORY_SIZE HIGH_MEMORY_DEF_SIZE
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#endif /* CONFIG_HAVE_ACPI_RESUME */
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#define CBMEM_ID_FREESPACE 0x46524545
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#define CBMEM_ID_GDT 0x4c474454
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#define CBMEM_ID_ACPI 0x41435049
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#define CBMEM_ID_ACPI_GNVS 0x474e5653
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#define CBMEM_ID_CBTABLE 0x43425442
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#define CBMEM_ID_PIRQ 0x49525154
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#define CBMEM_ID_MPTABLE 0x534d5054
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#define CBMEM_ID_RESUME 0x5245534d
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#define CBMEM_ID_RESUME_SCRATCH 0x52455343
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#define CBMEM_ID_SMBIOS 0x534d4254
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#define CBMEM_ID_TIMESTAMP 0x54494d45
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#define CBMEM_ID_MRCDATA 0x4d524344
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#define CBMEM_ID_CONSOLE 0x434f4e53
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#define CBMEM_ID_ELOG 0x454c4f47
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#define CBMEM_ID_COVERAGE 0x47434f56
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#define CBMEM_ID_NONE 0x00000000
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#ifndef __ASSEMBLER__
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#ifndef __PRE_RAM__
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extern uint64_t high_tables_base, high_tables_size;
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#endif
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int cbmem_initialize(void);
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void cbmem_init(u64 baseaddr, u64 size);
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int cbmem_reinit(u64 baseaddr);
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void *cbmem_add(u32 id, u64 size);
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void *cbmem_find(u32 id);
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void cbmem_list(void);
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void cbmem_arch_init(void);
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extern struct cbmem_entry *get_cbmem_toc(void);
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#ifndef __PRE_RAM__
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void set_cbmem_toc(struct cbmem_entry *);
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void __attribute__((weak)) cbmem_post_handling(void);
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#endif
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#endif
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#endif
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