coreboot-kgpe-d16/util/nvramtool
Patrick Georgi 12781422d5 nvramtool: reduce memory mapping
Instead of trying to map the first megabyte, only map what is
required to read the tables.

Change-Id: I9139dbc8fd1dd768bef7ab85c27cd4c18e2931b3
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/2485
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
2013-02-22 16:04:03 +01:00
..
accessors build: build coreboot on mingw. 2012-10-22 21:49:54 +02:00
cli nvramtool: fsync for mingw. 2012-11-14 09:24:56 +01:00
COPYING
ChangeLog
DISCLAIMER
Makefile nvramtool: uname in NetBSD doesnt take "-o" 2012-09-28 14:50:02 +02:00
Makefile.inc build: build coreboot on mingw. 2012-10-22 21:49:54 +02:00
README
cbfs.c build: build coreboot on mingw. 2012-10-22 21:49:54 +02:00
cbfs.h Change "VERSION*" to more determined name "CBFS_HEADER_VERSION*". 2013-01-04 06:27:33 +01:00
cmos_lowlevel.c nvramtool: Remove the building warning on older gcc 2012-09-11 08:32:30 +02:00
cmos_lowlevel.h
cmos_ops.c nvramtool: Fix CMOS checksum to match coreboot (and /dev/nvram) 2011-10-22 10:33:26 +02:00
cmos_ops.h
common.c nvramtool: Unify nvramtool and build_opt_tbl 2012-04-21 09:36:24 +02:00
common.h build: build coreboot on mingw. 2012-10-22 21:49:54 +02:00
compute_ip_checksum.c
coreboot_tables.h
hexdump.c hexdump: fix compiler warning 2012-04-07 19:57:42 +02:00
hexdump.h
input_file.c
input_file.h
ip_checksum.h
layout.c
layout.h nvramtool: Unify nvramtool and build_opt_tbl 2012-04-21 09:36:24 +02:00
lbtable.c nvramtool: reduce memory mapping 2013-02-22 16:04:03 +01:00
lbtable.h
nvramtool.spec
reg_expr.c
reg_expr.h
win32mmap.c build: build coreboot on mingw. 2012-10-22 21:49:54 +02:00

README

Summary of Operation
--------------------
nvramtool is a utility for reading/writing coreboot parameters and
displaying information from the coreboot table.  It is intended for x86-based
systems (both 32-bit and 64-bit) that use coreboot.

The coreboot table resides in low physical memory, and may be accessed
through the /dev/mem interface.  It is created at boot time by coreboot, and
contains various system information such as the type of mainboard in use.  It
specifies locations in the CMOS (nonvolatile RAM) where the coreboot
parameters are stored.

For information about coreboot, see http://www.coreboot.org/.

Ideas for Future Improvements
-----------------------------
1.  Move the core functionality of this program into a shared library.
2.  Consider adding options for displaying other BIOS-provided information
    such as the MP table, ACPI table, PCI IRQ routing table, etc.