From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: [PATCH 3/4] x86, efi: Add an efi= kernel command line parameter Date: Tue, 4 Jun 2013 14:18:52 +0200 Message-ID: <20130604121852.GE23640@pd.tnic> References: <1370177770-26661-1-git-send-email-bp@alien8.de> <1370177770-26661-4-git-send-email-bp@alien8.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <1370177770-26661-4-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Linux EFI Cc: Matt Fleming , Matthew Garrett , Jiri Kosina , X86-ML , LKML , Borislav Petkov List-Id: linux-efi@vger.kernel.org On Sun, Jun 02, 2013 at 02:56:09PM +0200, Borislav Petkov wrote: > From: Borislav Petkov > > .. for passing miscellaneous options from the kernel command line. > > Signed-off-by: Borislav Petkov > --- > arch/x86/platform/efi/efi.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c > index 82089d8b1954..aea4337f7023 100644 > --- a/arch/x86/platform/efi/efi.c > +++ b/arch/x86/platform/efi/efi.c > @@ -88,6 +88,11 @@ static u64 active_size; > > unsigned long x86_efi_facility; > > + /* 1:1 mapping of services regions */ > +#define EFI_CFG_MAP11 BIT(0) > + > +static unsigned long efi_config; > + > /* > * Returns 1 if 'facility' is enabled, 0 otherwise. > */ > @@ -1167,3 +1172,14 @@ efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) > return EFI_SUCCESS; > } > EXPORT_SYMBOL_GPL(efi_query_variable_store); > + > +static int __init parse_efi_cmdline(char *str) note to self: #ifdef CONFIG_X86_64 > +{ > + if (*str == '=') > + str++; > + if (!strncmp(str, "1:1_map", 7)) > + efi_config |= EFI_CFG_MAP11; #endif to temporarily workaround the 64-bit only requirement. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. --