kernel-fxtec-pro1x/arch/blackfin/include/asm/sections.h
Mike Frysinger 5cd82a6d58 Blackfin: calculate on-chip lengths at link time rather than run time
Since the link sizes never change at runtime, push the calculation out to
the linker script to save some useless calculation costs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:13:55 -05:00

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/*
 * Copyright 2004-2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */
#ifndef _BLACKFIN_SECTIONS_H
#define _BLACKFIN_SECTIONS_H
/* only used when MTD_UCLINUX */
extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
extern unsigned long _ramstart, _ramend, _rambase;
extern unsigned long memory_start, memory_end, physical_mem_end;
/*
* The weak markings on the lengths might seem weird, but this is required
* in order to make gcc accept the fact that these may actually have a value
* of 0 (since they aren't actually addresses, but sizes of sections).
*/
extern char _stext_l1[], _etext_l1[], _text_l1_lma[], __weak _text_l1_len[];
extern char _sdata_l1[], _edata_l1[], _sbss_l1[], _ebss_l1[],
_data_l1_lma[], __weak _data_l1_len[];
extern char _sdata_b_l1[], _edata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
_data_b_l1_lma[], __weak _data_b_l1_len[];
extern char _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[],
_sbss_l2[], _ebss_l2[], _l2_lma[], __weak _l2_len[];
#include <asm/mem_map.h>
/* Blackfin systems have discontinuous memory map and no virtualized memory */
static inline int arch_is_kernel_text(unsigned long addr)
{
return
(L1_CODE_LENGTH &&
addr >= (unsigned long)_stext_l1 &&
addr < (unsigned long)_etext_l1)
||
(L2_LENGTH &&
addr >= (unsigned long)_stext_l2 &&
addr < (unsigned long)_etext_l2);
}
#define arch_is_kernel_text(addr) arch_is_kernel_text(addr)
static inline int arch_is_kernel_data(unsigned long addr)
{
return
(L1_DATA_A_LENGTH &&
addr >= (unsigned long)_sdata_l1 &&
addr < (unsigned long)_ebss_l1)
||
(L1_DATA_B_LENGTH &&
addr >= (unsigned long)_sdata_b_l1 &&
addr < (unsigned long)_ebss_b_l1)
||
(L2_LENGTH &&
addr >= (unsigned long)_sdata_l2 &&
addr < (unsigned long)_ebss_l2);
}
#define arch_is_kernel_data(addr) arch_is_kernel_data(addr)
#include <asm-generic/sections.h>
#endif