mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
e50190a834
There's nothing arch-specific about check_signature(), so move it to <linux/io.h>. Use a cross between the Alpha and i386 implementations as the generic one. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/*
|
|
* Copyright 2006 PathScale, Inc. All Rights Reserved.
|
|
*
|
|
* This file is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef _LINUX_IO_H
|
|
#define _LINUX_IO_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/io.h>
|
|
#include <asm/page.h>
|
|
|
|
void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
|
|
void __iowrite64_copy(void __iomem *to, const void *from, size_t count);
|
|
|
|
int ioremap_page_range(unsigned long addr, unsigned long end,
|
|
unsigned long phys_addr, pgprot_t prot);
|
|
|
|
/**
|
|
* check_signature - find BIOS signatures
|
|
* @io_addr: mmio address to check
|
|
* @signature: signature block
|
|
* @length: length of signature
|
|
*
|
|
* Perform a signature comparison with the mmio address io_addr. This
|
|
* address should have been obtained by ioremap.
|
|
* Returns 1 on a match.
|
|
*/
|
|
|
|
static inline int check_signature(const volatile void __iomem *io_addr,
|
|
const unsigned char *signature, int length)
|
|
{
|
|
int retval = 0;
|
|
do {
|
|
if (readb(io_addr) != *signature)
|
|
goto out;
|
|
io_addr++;
|
|
signature++;
|
|
length--;
|
|
} while (length);
|
|
retval = 1;
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
#endif /* _LINUX_IO_H */
|