| /* |
| * (C) Copyright 2000 |
| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| /* #define DEBUG */ |
| |
| #include <common.h> |
| #include <flash.h> |
| |
| #if !defined(CFG_NO_FLASH) |
| |
| extern flash_info_t flash_info[]; /* info for FLASH chips */ |
| |
| /*----------------------------------------------------------------------- |
| * Functions |
| */ |
| |
| /* |
| * Get flash erase sector count. |
| */ |
| ushort |
| get_sector_count(flash_info_t *info) |
| { |
| if (info->p1_sector_count) { |
| return info->p1_sector_count; |
| } |
| return info->sector_count; |
| } |
| |
| ulong |
| get_size(flash_info_t *info) { |
| if (info->p1_size) { |
| return info->p1_size; |
| } |
| return info->size; |
| } |
| |
| /*----------------------------------------------------------------------- |
| * Set protection status for monitor sectors |
| * |
| * The monitor is always located in the _first_ Flash bank. |
| * If necessary you have to map the second bank at lower addresses. |
| */ |
| void |
| flash_protect (int flag, ulong from, ulong to, flash_info_t *info) |
| { |
| ulong b_end = info->start[0] + get_size(info) - 1; /* bank end address */ |
| short s_end = get_sector_count(info) - 1; /* index of last sector */ |
| int i; |
| |
| debug ("flash_protect %s: from 0x%08lX to 0x%08lX\n", |
| (flag & FLAG_PROTECT_SET) ? "ON" : |
| (flag & FLAG_PROTECT_CLEAR) ? "OFF" : "???", |
| from, to); |
| |
| /* Do nothing if input data is bad. */ |
| if (get_sector_count(info) == 0 || get_size(info) == 0 || to < from) { |
| return; |
| } |
| |
| /* There is nothing to do if we have no data about the flash |
| * or the protect range and flash range don't overlap. |
| */ |
| if (info->flash_id == FLASH_UNKNOWN || |
| to < info->start[0] || from > b_end) { |
| return; |
| } |
| |
| for (i=0; i<get_sector_count(info); ++i) { |
| ulong end; /* last address in current sect */ |
| |
| end = (i == s_end) ? b_end : info->start[i + 1] - 1; |
| |
| /* Update protection if any part of the sector |
| * is in the specified range. |
| */ |
| if (from <= end && to >= info->start[i]) { |
| if (flag & FLAG_PROTECT_CLEAR) { |
| #if defined(CFG_FLASH_PROTECTION) |
| flash_real_protect(info, i, 0); |
| #else |
| info->protect[i] = 0; |
| #endif /* CFG_FLASH_PROTECTION */ |
| debug ("protect off %d\n", i); |
| } |
| else if (flag & FLAG_PROTECT_SET) { |
| #if defined(CFG_FLASH_PROTECTION) |
| flash_real_protect(info, i, 1); |
| #else |
| info->protect[i] = 1; |
| #endif /* CFG_FLASH_PROTECTION */ |
| debug ("protect on %d\n", i); |
| } |
| } |
| } |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| flash_info_t * |
| addr2info (ulong addr) |
| { |
| #ifndef CONFIG_SPD823TS |
| flash_info_t *info; |
| int i; |
| |
| for (i=0, info=&flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) { |
| if (info->flash_id != FLASH_UNKNOWN && |
| addr >= info->start[0] && |
| /* WARNING - The '- 1' is needed if the flash |
| * is at the end of the address space, since |
| * info->start[0] + get_size(info) wraps back to 0. |
| * Please don't change this unless you understand this. |
| */ |
| addr <= info->start[0] + get_size(info) - 1) { |
| return (info); |
| } |
| } |
| #endif /* CONFIG_SPD823TS */ |
| |
| return (NULL); |
| } |
| |
| /*----------------------------------------------------------------------- |
| * Copy memory to flash. |
| * Make sure all target addresses are within Flash bounds, |
| * and no protected sectors are hit. |
| * Returns: |
| * ERR_OK 0 - OK |
| * ERR_TIMOUT 1 - write timeout |
| * ERR_NOT_ERASED 2 - Flash not erased |
| * ERR_PROTECTED 4 - target range includes protected sectors |
| * ERR_INVAL 8 - target address not in Flash memory |
| * ERR_ALIGN 16 - target address not aligned on boundary |
| * (only some targets require alignment) |
| */ |
| int |
| flash_write (char *src, ulong addr, ulong cnt) |
| { |
| #ifdef CONFIG_SPD823TS |
| return (ERR_TIMOUT); /* any other error codes are possible as well */ |
| #else |
| int i; |
| ulong end = addr + cnt - 1; |
| flash_info_t *info_first = addr2info (addr); |
| flash_info_t *info_last = addr2info (end ); |
| flash_info_t *info; |
| |
| if (cnt == 0) { |
| return (ERR_OK); |
| } |
| |
| if (!info_first || !info_last) { |
| return (ERR_INVAL); |
| } |
| |
| for (info = info_first; info <= info_last; ++info) { |
| ulong b_end = info->start[0] + get_size(info); /* bank end addr */ |
| short s_end = get_sector_count(info) - 1; |
| for (i=0; i<get_sector_count(info); ++i) { |
| ulong e_addr = (i == s_end) ? b_end : info->start[i + 1]; |
| |
| if ((end >= info->start[i]) && (addr < e_addr) && |
| (info->protect[i] != 0) ) { |
| return (ERR_PROTECTED); |
| } |
| } |
| } |
| |
| /* finally write data to flash */ |
| for (info = info_first; info <= info_last && cnt>0; ++info) { |
| ulong len; |
| |
| len = info->start[0] + get_size(info) - addr; |
| if (len > cnt) |
| len = cnt; |
| if ((i = write_buff(info, (uchar *)src, addr, len)) != 0) { |
| return (i); |
| } |
| cnt -= len; |
| addr += len; |
| src += len; |
| } |
| return (ERR_OK); |
| #endif /* CONFIG_SPD823TS */ |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| void flash_perror (int err) |
| { |
| switch (err) { |
| case ERR_OK: |
| break; |
| case ERR_TIMOUT: |
| puts ("Timeout writing to Flash\n"); |
| break; |
| case ERR_NOT_ERASED: |
| puts ("Flash not Erased\n"); |
| break; |
| case ERR_PROTECTED: |
| puts ("Can't write to protected Flash sectors\n"); |
| break; |
| case ERR_INVAL: |
| puts ("Outside available Flash\n"); |
| break; |
| case ERR_ALIGN: |
| puts ("Start and/or end address not on sector boundary\n"); |
| break; |
| case ERR_UNKNOWN_FLASH_VENDOR: |
| puts ("Unknown Vendor of Flash\n"); |
| break; |
| case ERR_UNKNOWN_FLASH_TYPE: |
| puts ("Unknown Type of Flash\n"); |
| break; |
| case ERR_PROG_ERROR: |
| puts ("General Flash Programming Error\n"); |
| break; |
| default: |
| printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err); |
| break; |
| } |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| #endif /* !CFG_NO_FLASH */ |