| /* |
| * (C) Copyright 2002 |
| * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| * Alex Zuepke <azu@sysgo.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 |
| */ |
| |
| #include <common.h> |
| |
| ulong myflush (void); |
| |
| |
| #define FLASH_BANK_SIZE PHYS_FLASH_SIZE |
| #define MAIN_SECT_SIZE 0x10000 /* 64 KB */ |
| |
| flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; |
| |
| |
| #define CMD_READ_ARRAY 0x000000F0 |
| #define CMD_UNLOCK1 0x000000AA |
| #define CMD_UNLOCK2 0x00000055 |
| #define CMD_ERASE_SETUP 0x00000080 |
| #define CMD_ERASE_CONFIRM 0x00000030 |
| #define CMD_PROGRAM 0x000000A0 |
| #define CMD_UNLOCK_BYPASS 0x00000020 |
| |
| #define MEM_FLASH_ADDR1 (*(volatile u16 *)(CFG_FLASH_BASE + (0x00000555 << 1))) |
| #define MEM_FLASH_ADDR2 (*(volatile u16 *)(CFG_FLASH_BASE + (0x000002AA << 1))) |
| |
| #define BIT_ERASE_DONE 0x00000080 |
| #define BIT_RDY_MASK 0x00000080 |
| #define BIT_PROGRAM_ERROR 0x00000020 |
| #define BIT_TIMEOUT 0x80000000 /* our flag */ |
| |
| #define READY 1 |
| #define ERR 2 |
| #define TMO 4 |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| ulong flash_init (void) |
| { |
| int i, j; |
| ulong size = 0; |
| |
| for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { |
| ulong flashbase = 0; |
| |
| flash_info[i].flash_id = |
| #if defined(CONFIG_AMD_LV400) |
| (AMD_MANUFACT & FLASH_VENDMASK) | |
| (AMD_ID_LV400B & FLASH_TYPEMASK); |
| #elif defined(CONFIG_AMD_LV800) |
| (AMD_MANUFACT & FLASH_VENDMASK) | |
| (AMD_ID_LV800B & FLASH_TYPEMASK); |
| #else |
| #error "Unknown flash configured" |
| #endif |
| flash_info[i].size = FLASH_BANK_SIZE; |
| flash_info[i].sector_count = CFG_MAX_FLASH_SECT; |
| memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); |
| if (i == 0) |
| flashbase = PHYS_FLASH_1; |
| else |
| panic ("configured too many flash banks!\n"); |
| for (j = 0; j < flash_info[i].sector_count; j++) { |
| if (j <= 3) { |
| /* 1st one is 16 KB */ |
| if (j == 0) { |
| flash_info[i].start[j] = |
| flashbase + 0; |
| } |
| |
| /* 2nd and 3rd are both 8 KB */ |
| if ((j == 1) || (j == 2)) { |
| flash_info[i].start[j] = |
| flashbase + 0x4000 + (j - |
| 1) * |
| 0x2000; |
| } |
| |
| /* 4th 32 KB */ |
| if (j == 3) { |
| flash_info[i].start[j] = |
| flashbase + 0x8000; |
| } |
| } else { |
| flash_info[i].start[j] = |
| flashbase + (j - 3) * MAIN_SECT_SIZE; |
| } |
| } |
| size += flash_info[i].size; |
| } |
| |
| flash_protect (FLAG_PROTECT_SET, |
| CFG_FLASH_BASE, |
| CFG_FLASH_BASE + monitor_flash_len - 1, |
| &flash_info[0]); |
| |
| flash_protect (FLAG_PROTECT_SET, |
| CFG_ENV_ADDR, |
| CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); |
| |
| return size; |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| void flash_print_info (flash_info_t * info) |
| { |
| int i; |
| |
| switch (info->flash_id & FLASH_VENDMASK) { |
| case (AMD_MANUFACT & FLASH_VENDMASK): |
| puts ("AMD: "); |
| break; |
| default: |
| puts ("Unknown Vendor "); |
| break; |
| } |
| |
| switch (info->flash_id & FLASH_TYPEMASK) { |
| case (AMD_ID_LV400B & FLASH_TYPEMASK): |
| puts ("1x Amd29LV400BB (4Mbit)\n"); |
| break; |
| case (AMD_ID_LV800B & FLASH_TYPEMASK): |
| puts ("1x Amd29LV800BB (8Mbit)\n"); |
| break; |
| default: |
| puts ("Unknown Chip Type\n"); |
| goto Done; |
| break; |
| } |
| |
| printf (" Size: %ld MB in %d Sectors\n", |
| info->size >> 20, info->sector_count); |
| |
| puts (" Sector Start Addresses:"); |
| for (i = 0; i < info->sector_count; i++) { |
| if ((i % 5) == 0) { |
| puts ("\n "); |
| } |
| printf (" %08lX%s", info->start[i], |
| info->protect[i] ? " (RO)" : " "); |
| } |
| puts ("\n"); |
| |
| Done: ; |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| int flash_erase (flash_info_t * info, int s_first, int s_last) |
| { |
| ushort result; |
| int iflag, cflag, prot, sect; |
| int rc = ERR_OK; |
| int chip; |
| |
| /* first look for protection bits */ |
| |
| if (info->flash_id == FLASH_UNKNOWN) |
| return ERR_UNKNOWN_FLASH_TYPE; |
| |
| if ((s_first < 0) || (s_first > s_last)) { |
| return ERR_INVAL; |
| } |
| |
| if ((info->flash_id & FLASH_VENDMASK) != |
| (AMD_MANUFACT & FLASH_VENDMASK)) { |
| return ERR_UNKNOWN_FLASH_VENDOR; |
| } |
| |
| prot = 0; |
| for (sect = s_first; sect <= s_last; ++sect) { |
| if (info->protect[sect]) { |
| prot++; |
| } |
| } |
| if (prot) |
| return ERR_PROTECTED; |
| |
| /* |
| * Disable interrupts which might cause a timeout |
| * here. Remember that our exception vectors are |
| * at address 0 in the flash, and we don't want a |
| * (ticker) exception to happen while the flash |
| * chip is in programming mode. |
| */ |
| cflag = icache_status (); |
| icache_disable (); |
| iflag = disable_interrupts (); |
| |
| /* Start erase on unprotected sectors */ |
| for (sect = s_first; sect <= s_last && !ctrlc (); sect++) { |
| printf ("Erasing sector %2d ... ", sect); |
| |
| /* arm simple, non interrupt dependent timer */ |
| reset_timer_masked (); |
| |
| if (info->protect[sect] == 0) { /* not protected */ |
| vu_short *addr = (vu_short *) (info->start[sect]); |
| |
| MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| MEM_FLASH_ADDR1 = CMD_ERASE_SETUP; |
| |
| MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| *addr = CMD_ERASE_CONFIRM; |
| |
| /* wait until flash is ready */ |
| chip = 0; |
| |
| do { |
| result = *addr; |
| |
| /* check timeout */ |
| if (get_timer_masked () > |
| CFG_FLASH_ERASE_TOUT) { |
| MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
| chip = TMO; |
| break; |
| } |
| |
| if (!chip |
| && (result & 0xFFFF) & BIT_ERASE_DONE) |
| chip = READY; |
| |
| if (!chip |
| && (result & 0xFFFF) & BIT_PROGRAM_ERROR) |
| chip = ERR; |
| |
| } while (!chip); |
| |
| MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
| |
| if (chip == ERR) { |
| rc = ERR_PROG_ERROR; |
| goto outahere; |
| } |
| if (chip == TMO) { |
| rc = ERR_TIMOUT; |
| goto outahere; |
| } |
| |
| puts ("ok.\n"); |
| } else { /* it was protected */ |
| |
| puts ("protected!\n"); |
| } |
| } |
| |
| if (ctrlc ()) |
| puts ("User Interrupt!\n"); |
| |
| outahere: |
| /* allow flash to settle - wait 10 ms */ |
| udelay_masked (10000); |
| |
| if (iflag) |
| enable_interrupts (); |
| |
| if (cflag) |
| icache_enable (); |
| |
| return rc; |
| } |
| |
| /*----------------------------------------------------------------------- |
| * Copy memory to flash |
| */ |
| |
| static int write_hword (flash_info_t * info, ulong dest, ushort data) |
| { |
| vu_short *addr = (vu_short *) dest; |
| ushort result; |
| int rc = ERR_OK; |
| int cflag, iflag; |
| int chip; |
| |
| /* |
| * Check if Flash is (sufficiently) erased |
| */ |
| result = *addr; |
| if ((result & data) != data) |
| return ERR_NOT_ERASED; |
| |
| |
| /* |
| * Disable interrupts which might cause a timeout |
| * here. Remember that our exception vectors are |
| * at address 0 in the flash, and we don't want a |
| * (ticker) exception to happen while the flash |
| * chip is in programming mode. |
| */ |
| cflag = icache_status (); |
| icache_disable (); |
| iflag = disable_interrupts (); |
| |
| MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| MEM_FLASH_ADDR1 = CMD_PROGRAM; |
| *addr = data; |
| |
| /* arm simple, non interrupt dependent timer */ |
| reset_timer_masked (); |
| |
| /* wait until flash is ready */ |
| chip = 0; |
| do { |
| result = *addr; |
| |
| /* check timeout */ |
| if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) { |
| chip = ERR | TMO; |
| break; |
| } |
| if (!chip && ((result & 0x80) == (data & 0x80))) |
| chip = READY; |
| |
| if (!chip && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) { |
| result = *addr; |
| |
| if ((result & 0x80) == (data & 0x80)) |
| chip = READY; |
| else |
| chip = ERR; |
| } |
| |
| } while (!chip); |
| |
| *addr = CMD_READ_ARRAY; |
| |
| if (chip == ERR || *addr != data) |
| rc = ERR_PROG_ERROR; |
| |
| if (iflag) |
| enable_interrupts (); |
| |
| if (cflag) |
| icache_enable (); |
| |
| return rc; |
| } |
| |
| /*----------------------------------------------------------------------- |
| * Copy memory to flash. |
| */ |
| |
| int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
| { |
| ulong cp, wp; |
| int l; |
| int i, rc; |
| ushort data; |
| |
| wp = (addr & ~1); /* get lower word aligned address */ |
| |
| /* |
| * handle unaligned start bytes |
| */ |
| if ((l = addr - wp) != 0) { |
| data = 0; |
| for (i = 0, cp = wp; i < l; ++i, ++cp) { |
| data = (data >> 8) | (*(uchar *) cp << 8); |
| } |
| for (; i < 2 && cnt > 0; ++i) { |
| data = (data >> 8) | (*src++ << 8); |
| --cnt; |
| ++cp; |
| } |
| for (; cnt == 0 && i < 2; ++i, ++cp) { |
| data = (data >> 8) | (*(uchar *) cp << 8); |
| } |
| |
| if ((rc = write_hword (info, wp, data)) != 0) { |
| return (rc); |
| } |
| wp += 2; |
| } |
| |
| /* |
| * handle word aligned part |
| */ |
| while (cnt >= 2) { |
| data = *((vu_short *) src); |
| if ((rc = write_hword (info, wp, data)) != 0) { |
| return (rc); |
| } |
| src += 2; |
| wp += 2; |
| cnt -= 2; |
| } |
| |
| if (cnt == 0) { |
| return ERR_OK; |
| } |
| |
| /* |
| * handle unaligned tail bytes |
| */ |
| data = 0; |
| for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) { |
| data = (data >> 8) | (*src++ << 8); |
| --cnt; |
| } |
| for (; i < 2; ++i, ++cp) { |
| data = (data >> 8) | (*(uchar *) cp << 8); |
| } |
| |
| return write_hword (info, wp, data); |
| } |