1 // SPDX-License-Identifier: GPL-2.0+
16 /*-----------------------------------------------------------------------
20 /*-----------------------------------------------------------------------
34 	if (!info || info->sector_count == 0 || info->size == 0 || to < from) {  in flash_protect()
38 	s_end = info->sector_count - 1;	/* index of last sector */  in flash_protect()
39 	b_end = info->start[0] + info->size - 1;	/* bank end address */  in flash_protect()
47 	 * or the protect range and flash range don't overlap.  in flash_protect()
49 	if (info->flash_id == FLASH_UNKNOWN ||  in flash_protect()
50 	    to < info->start[0] || from > b_end) {  in flash_protect()
54 	for (i=0; i<info->sector_count; ++i) {  in flash_protect()
57 		end = (i == s_end) ? b_end : info->start[i + 1] - 1;  in flash_protect()
62 		if (from <= end && to >= info->start[i]) {  in flash_protect()
67 				info->protect[i] = 0;  in flash_protect()
69 				debug ("protect off %d\n", i);  in flash_protect()
75 				info->protect[i] = 1;  in flash_protect()
77 				debug ("protect on %d\n", i);  in flash_protect()
83 /*-----------------------------------------------------------------------
93 		if (info->flash_id != FLASH_UNKNOWN &&  in addr2info()
94 		    addr >= info->start[0] &&  in addr2info()
95 		    /* WARNING - The '- 1' is needed if the flash  in addr2info()
97 		     * info->start[0] + info->size wraps back to 0.  in addr2info()
100 		    addr <= info->start[0] + info->size - 1) {  in addr2info()
108 /*-----------------------------------------------------------------------
113  * ERR_OK          0 - OK
114  * ERR_TIMEOUT     1 - write timeout
115  * ERR_NOT_ERASED  2 - Flash not erased
116  * ERR_PROTECTED   4 - target range includes protected sectors
117  * ERR_INVAL       8 - target address not in Flash memory
118  * ERR_ALIGN       16 - target address not aligned on boundary
125 	ulong         end        = addr + cnt - 1;  in flash_write()
142 		ulong b_end = info->start[0] + info->size;	/* bank end addr */  in flash_write()
143 		short s_end = info->sector_count - 1;  in flash_write()
144 		for (i=0; i<info->sector_count; ++i) {  in flash_write()
145 			ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];  in flash_write()
147 			if ((end >= info->start[i]) && (addr < e_addr) &&  in flash_write()
148 			    (info->protect[i] != 0) ) {  in flash_write()
154 	/* finally write data to flash */  in flash_write()
158 		len = info->start[0] + info->size - addr;  in flash_write()
164 		cnt  -= len;  in flash_write()
179 /*-----------------------------------------------------------------------
194 		puts ("Can't write to protected Flash sectors\n");  in flash_perror()