1 //==========================================================================
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
44 // Contributors: gthomas, jskov
49 //####DESCRIPTIONEND####
51 //==========================================================================
53 #include <pkgconf/hal.h>
54 #include <cyg/hal/hal_arch.h>
55 #include <cyg/hal/hal_cache.h>
57 #define _FLASH_PRIVATE_
58 #include <cyg/io/flash.h>
62 #define _si(p) ((p[0]<<8)|p[1])
69 unsigned short data[4];
70 extern char flash_query, flash_query_end;
71 typedef int code_fun(unsigned char *);
72 code_fun *_flash_query;
73 int code_len, stat, num_regions, region_size;
75 // Copy 'program' code to RAM for execution
76 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
77 _flash_query = (code_fun *)flash_info.work_space;
78 memcpy(_flash_query, &flash_query, code_len);
79 HAL_DCACHE_SYNC(); // Should guarantee this code will run
80 HAL_ICACHE_INVALIDATE_ALL(); // is also required to avoid old contents
81 stat = (*_flash_query)(data);
83 (*flash_info.pf)("stat = %x\n", stat);
84 dump_buf(data, sizeof(data));
87 if (data[0] != FLASH_Intel_code) {
88 (*flash_info.pf)("Not Intel = %x\n", data[0]);
92 // FIXME: More devices, comments, etc
93 if (data[1] == (unsigned short)0x8897) {
95 region_size = 0x20000;
96 } else if (data[1] == (unsigned short)0x88f4) {
97 num_regions = 32; // (only use one for now)*4; // 4 devices in serial, each having 32 regions
98 region_size = 0x10000;
100 (*flash_info.pf)("Unknown device type: %x\n", data[1]);
101 return FLASH_ERR_HWR;
104 // Hard wired for now FIXME
105 flash_info.block_size = region_size;
106 flash_info.blocks = num_regions;
107 #if 0 // This should be used only for the gross XX firmware build
108 flash_info.start = (void *)0;
109 flash_info.end = (void *)(0x10000000+(num_regions*region_size));
111 flash_info.start = (void *)0x50000000;
112 flash_info.end = (void *)(0x50000000+(num_regions*region_size));
118 // Map a hardware status to a package error
120 flash_hwr_map_error(int err)
122 if (err & 0x007E007E) {
123 (*flash_info.pf)("Err = %x\n", err);
124 if (err & 0x00400040) {
125 return FLASH_ERR_ERASE_SUSPEND;
127 if (err & 0x00040004) {
128 return FLASH_ERR_PROGRAM_SUSPEND;
130 if (err & 0x00020002) {
131 return FLASH_ERR_PROTECT;
133 if (err & 0x00100010) {
134 return FLASH_ERR_PROGRAM;
136 if (err & 0x00200020) {
137 return FLASH_ERR_ERASE;
139 return FLASH_ERR_HWR; // FIXME
145 // See if a range of FLASH addresses overlaps currently running code
147 flash_code_overlaps(void *start, void *end)
149 extern char _stext[], _etext[];
151 return ((((unsigned long)&_stext >= (unsigned long)start) &&
152 ((unsigned long)&_stext < (unsigned long)end)) ||
153 (((unsigned long)&_etext >= (unsigned long)start) &&
154 ((unsigned long)&_etext < (unsigned long)end)));