2 * File: include/asm-blackfin/bfin-global.h
6 * Description: Global extern defines for blackfin
9 * Copyright 2004-2006 Analog Devices Inc.
11 * Bugs: Enter bugs at http://blackfin.uclinux.org/
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, see the file COPYING, or write
25 * to the Free Software Foundation, Inc.,
26 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 #ifndef _BFIN_GLOBAL_H_
30 #define _BFIN_GLOBAL_H_
34 #include <asm-generic/sections.h>
35 #include <asm/ptrace.h>
37 #include <linux/linkage.h>
38 #include <linux/types.h>
40 #if defined(CONFIG_DMA_UNCACHED_4M)
41 # define DMA_UNCACHED_REGION (4 * 1024 * 1024)
42 #elif defined(CONFIG_DMA_UNCACHED_2M)
43 # define DMA_UNCACHED_REGION (2 * 1024 * 1024)
44 #elif defined(CONFIG_DMA_UNCACHED_1M)
45 # define DMA_UNCACHED_REGION (1024 * 1024)
47 # define DMA_UNCACHED_REGION (0)
50 extern unsigned long get_cclk(void);
51 extern unsigned long get_sclk(void);
52 extern unsigned long sclk_to_usecs(unsigned long sclk);
53 extern unsigned long usecs_to_sclk(unsigned long usecs);
55 extern void dump_bfin_process(struct pt_regs *regs);
56 extern void dump_bfin_mem(struct pt_regs *regs);
57 extern void dump_bfin_trace_buffer(void);
59 /* init functions only */
60 extern int init_arch_irq(void);
61 extern void bfin_icache_init(void);
62 extern void bfin_dcache_init(void);
63 extern void init_exception_vectors(void);
64 extern void program_IAR(void);
66 extern asmlinkage void lower_to_irq14(void);
67 extern asmlinkage void bfin_return_from_exception(void);
68 extern asmlinkage void evt14_softirq(void);
69 extern asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs);
70 extern int bfin_internal_set_wake(unsigned int irq, unsigned int state);
72 extern void *l1_data_A_sram_alloc(size_t);
73 extern void *l1_data_B_sram_alloc(size_t);
74 extern void *l1_inst_sram_alloc(size_t);
75 extern void *l1_data_sram_alloc(size_t);
76 extern void *l1_data_sram_zalloc(size_t);
77 extern void *l2_sram_alloc(size_t);
78 extern void *l2_sram_zalloc(size_t);
79 extern int l1_data_A_sram_free(const void*);
80 extern int l1_data_B_sram_free(const void*);
81 extern int l1_inst_sram_free(const void*);
82 extern int l1_data_sram_free(const void*);
83 extern int l2_sram_free(const void *);
84 extern int sram_free(const void*);
86 #define L1_INST_SRAM 0x00000001
87 #define L1_DATA_A_SRAM 0x00000002
88 #define L1_DATA_B_SRAM 0x00000004
89 #define L1_DATA_SRAM 0x00000006
90 #define L2_SRAM 0x00000008
91 extern void *sram_alloc_with_lsl(size_t, unsigned long);
92 extern int sram_free_with_lsl(const void*);
94 extern void *isram_memcpy(void *dest, const void *src, size_t n);
96 extern const char bfin_board_name[];
98 extern unsigned long bfin_sic_iwr[];
99 extern unsigned vr_wakeup;
100 extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */
101 extern unsigned long _ramstart, _ramend, _rambase;
102 extern unsigned long memory_start, memory_end, physical_mem_end;
103 extern char _stext_l1[], _etext_l1[], _sdata_l1[], _edata_l1[], _sbss_l1[],
104 _ebss_l1[], _l1_lma_start[], _sdata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
105 _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[], _sbss_l2[],
106 _ebss_l2[], _l2_lma_start[];
108 /* only used when MTD_UCLINUX */
109 extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
111 #ifdef CONFIG_BFIN_ICACHE_LOCK
112 extern void cache_grab_lock(int way);
113 extern void cache_lock(int way);
118 #endif /* _BLACKFIN_H_ */