Matt Fleming 5a17dae422 efi: Add efi= parameter parsing to the EFI boot stub ... We need a way to customize the behaviour of the EFI boot stub, in particular, we need a way to disable the "chunking" workaround, used when reading files from the EFI System Partition. One of my machines doesn't cope well when reading files in 1MB chunks to a buffer above the 4GB mark - it appears that the "chunking" bug workaround triggers another firmware bug. This was only discovered with commit 4bf7111f50 ("x86/efi: Support initrd loaded above 4G"), and that commit is perfectly valid. The symptom I observed was a corrupt initrd rather than any kind of crash. efi= is now used to specify EFI parameters in two very different execution environments, the EFI boot stub and during kernel boot. There is also a slight performance optimization by enabling efi=nochunk, but that's offset by the fact that you're more likely to run into firmware issues, at least on x86. This is the rationale behind leaving the workaround enabled by default. Also provide some documentation for EFI_READ_CHUNK_SIZE and why we're using the current value of 1MB. Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Roy Franz <roy.franz@linaro.org> Cc: Maarten Lankhorst <m.b.lankhorst@gmail.com> Cc: Leif Lindholm <leif.lindholm@linaro.org> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Matt Fleming <matt.fleming@intel.com>		2014-10-03 18:40:57 +01:00
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efi	efi: Add efi= parameter parsing to the EFI boot stub	2014-10-03 18:40:57 +01:00
google	firmware: google memconsole driver fixes	2014-02-15 11:30:28 -08:00
dcdbas.c	initconst: Fix initconst mistake in dcdbas	2014-02-13 18:14:54 -08:00
dcdbas.h	dcdbas: export functionality for use in other drivers	2009-01-08 08:31:12 -08:00
dell_rbu.c	sysfs: add struct file* to bin_attr callbacks	2010-05-21 09:37:31 -07:00
dmi_scan.c	firmware/dmi_scan: generalize for use by other archs	2014-01-23 16:36:57 -08:00
dmi-id.c	dmi-id: fix a memory leak in dmi_id_init error path	2010-08-05 13:53:34 -07:00
dmi-sysfs.c	firmware: dmi-sysfs: Remove "dmi" directory on module exit	2013-12-08 18:23:42 -08:00
edd.c	[SCSI] edd: Treat "XPRS" host bus type the same as "PCI"	2011-10-31 13:26:19 +04:00
iscsi_ibft_find.c	efi: Make 'efi_enabled' a function to query EFI facilities	2013-01-30 11:51:59 -08:00
iscsi_ibft.c	iscsi_ibft: Fix finding Broadcom specific ibft sign	2014-05-13 14:54:14 -04:00
Kconfig	ACPI and power management updates for 3.14-rc1	2014-01-24 15:51:02 -08:00
Makefile	x86/efi: Don't select EFI from certain special ACPI drivers	2013-12-19 21:32:46 +01:00
memmap.c	drivers/firmware/memmap.c: don't allocate firmware_map_entry of same memory range	2014-08-06 18:01:20 -07:00
pcdp.c	pcdp: use early_ioremap/early_iounmap to access pcdp table	2012-07-30 17:25:11 -07:00
pcdp.h	Update broken web addresses in the kernel.	2010-10-18 11:03:14 +02:00