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x86: Move table csum into separate header

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We need the checksum function without all the other table functionality
soon, so let's split it out into its own header file.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Alexander Graf 2016-08-19 01:23:22 +02:00 • committed by Bin Meng
parent d5a815327d
commit 2b445e4d31
3 changed files with 24 additions and 12 deletions
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2
arch/x86/include/asm/tables.h
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@ -7,6 +7,8 @@
#ifndef _X86_TABLES_H_ #ifndef _X86_TABLES_H_
#define _X86_TABLES_H_ #define _X86_TABLES_H_
#include <tables_csum.h>
/* /*
* All x86 tables happen to like the address range from 0xf0000 to 0x100000. * All x86 tables happen to like the address range from 0xf0000 to 0x100000.
* We use 0xf0000 as the starting address to store those tables, including * We use 0xf0000 as the starting address to store those tables, including

12
arch/x86/lib/tables.c
View file

@ -38,18 +38,6 @@ static table_write table_write_funcs[] = {
#endif #endif
}; };
u8 table_compute_checksum(void *v, int len)
{
u8 *bytes = v;
u8 checksum = 0;
int i;
for (i = 0; i < len; i++)
checksum -= bytes[i];
return checksum;
}
void table_fill_string(char *dest, const char *src, size_t n, char pad) void table_fill_string(char *dest, const char *src, size_t n, char pad)
{ {
int start, len; int start, len;

22
include/tables_csum.h Normal file
View file

@ -0,0 +1,22 @@
/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _TABLES_CSUM_H_
#define _TABLES_CSUM_H_
static inline u8 table_compute_checksum(void *v, int len)
{
u8 *bytes = v;
u8 checksum = 0;
int i;
for (i = 0; i < len; i++)
checksum -= bytes[i];
return checksum;
}
#endif