3.8.13.5 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Richard Weinberger <richard@xxxxxx>
commit 8c58bf3eec3b8fc8162fe557e9361891c20758f2 upstream.
Using this parameter one can disable the storage_size/2 check if
he is really sure that the UEFI does sane gc and fulfills the spec.
This parameter is useful if a devices uses more than 50% of the
storage by default.
The Intel DQSW67 desktop board is such a sucker for exmaple.
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx>
[ kamal: backport to 3.8 as prereq for "Modify UEFI anti-bricking code"
(replaced param functionality gets implemented by that commit) ]
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
Documentation/kernel-parameters.txt | 6 ++++++
arch/x86/platform/efi/efi.c | 9 +++++++++
2 files changed, 15 insertions(+)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 986614d..0b92543 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -785,6 +785,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
edd= [EDD]
Format: {"off" | "on" | "skip[mbr]"}
+ efi_no_storage_paranoia [EFI; X86]
+ Using this parameter you can use more than 50% of
+ your efi variable storage. Use this parameter only if
+ you are really sure that your UEFI does sane gc and
+ fulfills the spec otherwise your board may brick.
+
eisa_irq_edge= [PARISC,HW]
See header of drivers/parisc/eisa.c.
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 27ff3b0..55452cd 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -98,6 +98,15 @@ static int __init setup_add_efi_memmap(char *arg)
}
early_param("add_efi_memmap", setup_add_efi_memmap);
+static bool efi_no_storage_paranoia;
+
+static int __init setup_storage_paranoia(char *arg)
+{
+ efi_no_storage_paranoia = true;
+ return 0;
+}
+early_param("efi_no_storage_paranoia", setup_storage_paranoia);
+
static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
{
--
1.8.1.2
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