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####
43 // Author(s): gthomas, hmt
44 // Contributors: gthomas
49 //####DESCRIPTIONEND####
51 //==========================================================================
54 // original code changed by KARO electronics GmbH 09.04.2003
55 // the original code assumes, that the BA is constant over the whole region to program.
56 // As we remap the first 4k of flash to DRAM, and the corresponding DRAM to flash,
57 // this is not true if we want to update the RedBoot image itself.
60 #include <pkgconf/hal.h>
61 #include <cyg/hal/hal_arch.h>
62 #include <cyg/hal/hal_cache.h>
65 // CAUTION! This code must be copied to RAM before execution. Therefore,
66 // it must not contain any code which might be position dependent!
70 flash_program_buf(volatile flash_t *addr, flash_t *data, int len,
71 unsigned long block_mask, int buffer_size)
73 volatile flash_t *ROM;
75 volatile flash_t *phy_address;
79 #ifdef FLASH_Write_Buffer
85 HAL_DCACHE_IS_ENABLED(cache_on);
91 // Get base address and map addresses to virtual addresses
92 ROM = FLASH_P2V( CYGNUM_FLASH_BASE_MASK & (unsigned int)addr);
93 BA = FLASH_P2V( block_mask & (unsigned int)addr );
94 addr = FLASH_P2V(addr);
98 // Clear any error conditions
99 ROM[0] = FLASH_Clear_Status;
101 #ifdef FLASH_Write_Buffer
102 // Write any big chunks first
103 while (len >= buffer_size) {
104 ROM = FLASH_P2V( CYGNUM_FLASH_BASE_MASK & (unsigned int)phy_address );
105 BA = FLASH_P2V( block_mask & (unsigned int)phy_address );
106 addr = FLASH_P2V(phy_address);
109 if (wc > len) wc = len;
112 // convert 'wc' in bytes to 'wc' in 'flash_t'
114 wc = wc / sizeof(flash_t); // Word count
118 *BA = FLASH_Write_Buffer;
121 while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
122 if (--timeout == 0) {
127 *BA = FLASH_Write_Buffer;
130 *BA = FLASHWORD(wc-1); // Count is 0..N-1
131 for (i = 0; i < wc; i++) {
132 #ifdef CYGHWR_FLASH_WRITE_ELEM
133 CYGHWR_FLASH_WRITE_ELEM(addr+i, data+i);
135 *(addr+i) = *(data+i);
143 ROM[0] = FLASH_Read_Status;
145 while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
146 if (--timeout == 0) {
154 // Jump out if there was an error
155 if (stat & FLASH_ErrorMask) {
162 // And verify the data - also increments the pointers.
164 for (i = 0; i < wc; i++) {
166 if ( *addr++ != *data++ ) {
167 stat = FLASH_ErrorNotVerified;
179 diag_printf("hier komm ich auch rein !!!!\n");
180 ROM = FLASH_P2V( CYGNUM_FLASH_BASE_MASK & (unsigned int)phy_address );
181 BA = FLASH_P2V( block_mask & (unsigned int)phy_address );
182 addr = FLASH_P2V(phy_address);
184 ROM[0] = FLASH_Program;
185 #ifdef CYGHWR_FLASH_WRITE_ELEM
186 CYGHWR_FLASH_WRITE_ELEM(addr, data);
191 while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
192 if (--timeout == 0) {
196 if (stat & FLASH_ErrorMask) {
199 ROM[0] = FLASH_Reset;
201 if (*addr++ != *data++) {
202 stat = FLASH_ErrorNotVerified;
205 len -= sizeof( flash_t );
208 // Restore ROM to "normal" mode
210 ROM[0] = FLASH_Reset;