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path: root/drivers/acpi/bgrt.c
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2013-08-22acpi: bgrt: fix build error due to attribute changeGreg Kroah-Hartman
No need to call sysfs_bin_attr_init, as the attribute is not dynamically created. Also, we renamed the attribute, so this one isn't even valid anymore. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Len Brown <lenb@kernel.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-21ACPI: bgrt: take advantage of binary sysfs groupsGreg KH
Attribute groups now can handle binary sysfs attributes, so clean up the code here by using a binary attribute array. This saves us the extra call to create the binary attribute at saves 6 lines overall. Cc: Len Brown <lenb@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -- I can take this in my driver-core tree if someone from ACPI acks it, otherwise, feel free to take it through the ACPI trees instead, just let me know. drivers/acpi/bgrt.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-)
2012-09-29efi: Fix the ACPI BGRT driver for images located in EFI boot services memoryJosh Triplett
The ACPI BGRT driver accesses the BIOS logo image when it initializes. However, ACPI 5.0 (which introduces the BGRT) recommends putting the logo image in EFI boot services memory, so that the OS can reclaim that memory. Production systems follow this recommendation, breaking the ACPI BGRT driver. Move the bulk of the BGRT code to run during a new EFI late initialization phase, which occurs after switching EFI to virtual mode, and after initializing ACPI, but before freeing boot services memory. Copy the BIOS logo image to kernel memory at that point, and make it accessible to the BGRT driver. Rework the existing ACPI BGRT driver to act as a simple wrapper exposing that image (and the properties from the BGRT) via sysfs. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Link: http://lkml.kernel.org/r/93ce9f823f1c1f3bb88bdd662cce08eee7a17f5d.1348876882.git.josh@joshtriplett.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-17acpi, bgrd: Add missing <linux/io.h> to drivers/acpi/bgrt.cH. Peter Anvin
The ACPI BGRT driver uses ioremap() and memcpy_fromio(), which means it needs to #include <linux/io.h>. [ hpa: This was hidden because <asm/acpi.h> used to include <asm/trampoline.h>, which then included <asm/io.h> ] Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336597442-9399-1-git-send-email-hpa@linux.intel.com Cc: Matthew Garrett <mjg@redhat.com> Cc: Len Brown <lenb@kernel.org>
2012-03-30ACPI: Add support for exposing BGRT dataMatthew Garrett
ACPI 5.0 adds the BGRT, a table that contains a pointer to the firmware boot splash and associated metadata. This simple driver exposes it via /sys/firmware/acpi in order to allow bootsplash applications to draw their splash around the firmware image and reduce the number of jarring graphical transitions during boot. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>