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, msalter
49 //####DESCRIPTIONEND####
51 //==========================================================================
53 #include <pkgconf/hal.h>
54 #include <cyg/hal/hal_arch.h>
55 #include <cyg/infra/diag.h>
57 #define _FLASH_PRIVATE_
58 #include <cyg/io/flash.h>
64 #define _si(p) ((p[1]<<8)|p[0])
69 struct FLASH_query data, *qp;
70 int num_regions, region_size;
72 flash_dev_query(&data);
75 if (/*(qp->manuf_code == FLASH_Intel_code) && */
76 (strncmp(qp->id, "QRY", 3) == 0)) {
77 num_regions = _si(qp->num_regions)+1;
78 region_size = _si(qp->region_size)*256;
80 flash_info.block_size = region_size*2; // Pairs of chips in parallel
81 flash_info.blocks = num_regions*2; // and pairs of chips in serial
82 flash_info.start = (void *)0x9c000000;
83 flash_info.end = (void *)0x9e000000;
86 (*flash_info.pf)("Can't identify FLASH, sorry\n");
87 diag_dump_buf((void*)&data, sizeof(data));
92 // Map a hardware status to a package error
94 flash_hwr_map_error(int err)
96 if (err & 0x007E007E) {
97 (*flash_info.pf)("Err = %x\n", err);
98 if (err & 0x00100010) {
99 return FLASH_ERR_PROGRAM;
101 if (err & 0x00200020) {
102 return FLASH_ERR_ERASE;
104 return FLASH_ERR_HWR; // FIXME
110 // See if a range of FLASH addresses overlaps currently running code
112 flash_code_overlaps(void *start, void *end)
114 extern char _stext[], _etext[];
115 unsigned long p_stext, pstart, p_etext, pend;
117 p_stext = CYGARC_PHYSICAL_ADDRESS((unsigned long)&_stext);
118 p_etext = CYGARC_PHYSICAL_ADDRESS((unsigned long)&_etext);
120 // if _stext/_etext in boot shadow region, convert to
121 // system flash address
122 if ((p_stext >= 0x1fc00000) && (p_etext <= 0x20000000)) {
123 p_stext -= 0x02000000;
124 p_etext -= 0x02000000;
127 pstart = CYGARC_PHYSICAL_ADDRESS((unsigned long)start);
128 pend = CYGARC_PHYSICAL_ADDRESS((unsigned long)end);
130 return (((p_stext >= pstart) && (p_stext < pend)) ||
131 ((p_etext >= pstart) && (p_etext < pend)));