/* * (C) Copyright 2002 * Lineo, Inc. * Bernhard Kuhn * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH * Alex Zuepke * * 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 ulong myflush(void); /* Flash Organization Structure */ typedef struct OrgDef { unsigned int sector_number; unsigned int sector_size; } OrgDef; /* Flash Organizations */ OrgDef OrgAT49BV16x4[] = { { 8, 8*1024 }, /* 8 * 8kBytes sectors */ { 2, 32*1024 }, /* 2 * 32kBytes sectors */ { 30, 64*1024 } /* 30 * 64kBytes sectors */ }; OrgDef OrgAT49BV16x4A[] = { { 8, 8*1024 }, /* 8 * 8kBytes sectors */ { 31, 64*1024 } /* 31 * 64kBytes sectors */ }; #define FLASH_BANK_SIZE 0x200000 /* 2 MB */ #define MAIN_SECT_SIZE 0x10000 /* 64 KB */ flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* AT49BV1614A Codes */ #define FLASH_CODE1 0xAA #define FLASH_CODE2 0x55 #define ID_IN_CODE 0x90 #define ID_OUT_CODE 0xF0 #define CMD_READ_ARRAY 0x00F0 #define CMD_UNLOCK1 0x00AA #define CMD_UNLOCK2 0x0055 #define CMD_ERASE_SETUP 0x0080 #define CMD_ERASE_CONFIRM 0x0030 #define CMD_PROGRAM 0x00A0 #define CMD_UNLOCK_BYPASS 0x0020 #define MEM_FLASH_ADDR1 (*(volatile u16 *)(CFG_FLASH_BASE + (0x00005555<<1))) #define MEM_FLASH_ADDR2 (*(volatile u16 *)(CFG_FLASH_BASE + (0x00002AAA<<1))) #define IDENT_FLASH_ADDR1 (*(volatile u16 *)(CFG_FLASH_BASE + (0x0000555<<1))) #define IDENT_FLASH_ADDR2 (*(volatile u16 *)(CFG_FLASH_BASE + (0x0000AAA<<1))) #define BIT_ERASE_DONE 0x0080 #define BIT_RDY_MASK 0x0080 #define BIT_PROGRAM_ERROR 0x0020 #define BIT_TIMEOUT 0x80000000 /* our flag */ #define READY 1 #define ERR 2 #define TMO 4 /*----------------------------------------------------------------------- */ void flash_identification (flash_info_t * info) { volatile u16 manuf_code, device_code, add_device_code; IDENT_FLASH_ADDR1 = FLASH_CODE1; IDENT_FLASH_ADDR2 = FLASH_CODE2; IDENT_FLASH_ADDR1 = ID_IN_CODE; manuf_code = *(volatile u16 *) CFG_FLASH_BASE; device_code = *(volatile u16 *) (CFG_FLASH_BASE + 2); add_device_code = *(volatile u16 *) (CFG_FLASH_BASE + (3 << 1)); IDENT_FLASH_ADDR1 = FLASH_CODE1; IDENT_FLASH_ADDR2 = FLASH_CODE2; IDENT_FLASH_ADDR1 = ID_OUT_CODE; /* Vendor type */ info->flash_id = ATM_MANUFACT & FLASH_VENDMASK; printf ("Atmel: "); if ((device_code & FLASH_TYPEMASK) == (ATM_ID_BV1614 & FLASH_TYPEMASK)) { if ((add_device_code & FLASH_TYPEMASK) == (ATM_ID_BV1614A & FLASH_TYPEMASK)) { info->flash_id |= ATM_ID_BV1614A & FLASH_TYPEMASK; printf ("AT49BV1614A (16Mbit)\n"); } } else { /* AT49BV1614 Flash */ info->flash_id |= ATM_ID_BV1614 & FLASH_TYPEMASK; printf ("AT49BV1614 (16Mbit)\n"); } } ulong flash_init (void) { int i, j, k; unsigned int flash_nb_blocks, sector; unsigned int start_address; OrgDef *pOrgDef; ulong size = 0; for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { ulong flashbase = 0; flash_identification (&flash_info[i]); flash_info[i].size = FLASH_BANK_SIZE; if ((flash_info[i].flash_id & FLASH_TYPEMASK) == (ATM_ID_BV1614 & FLASH_TYPEMASK)) { flash_info[i].sector_count = CFG_MAX_FLASH_SECT; memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); pOrgDef = OrgAT49BV16x4; flash_nb_blocks = sizeof (OrgAT49BV16x4) / sizeof (OrgDef); } else { /* AT49BV1614A Flash */ flash_info[i].sector_count = CFG_MAX_FLASH_SECT - 1; memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT - 1); pOrgDef = OrgAT49BV16x4A; flash_nb_blocks = sizeof (OrgAT49BV16x4A) / sizeof (OrgDef); } if (i == 0) flashbase = PHYS_FLASH_1; else panic ("configured to many flash banks!\n"); sector = 0; start_address = flashbase; for (j = 0; j < flash_nb_blocks; j++) { for (k = 0; k < pOrgDef[j].sector_number; k++) { flash_info[i].start[sector++] = start_address; start_address += pOrgDef[j].sector_size; } } size += flash_info[i].size; } /* Protect binary boot image */ flash_protect (FLAG_PROTECT_SET, CFG_FLASH_BASE, CFG_FLASH_BASE + CFG_BOOT_SIZE - 1, &flash_info[0]); /* Protect environment variables */ flash_protect (FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); /* Protect U-Boot gzipped image */ flash_protect (FLAG_PROTECT_SET, CFG_U_BOOT_BASE, CFG_U_BOOT_BASE + CFG_U_BOOT_SIZE - 1, &flash_info[0]); return size; } /*----------------------------------------------------------------------- */ void flash_print_info (flash_info_t * info) { int i; switch (info->flash_id & FLASH_VENDMASK) { case (ATM_MANUFACT & FLASH_VENDMASK): printf ("Atmel: "); break; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case (ATM_ID_BV1614 & FLASH_TYPEMASK): printf ("AT49BV1614 (16Mbit)\n"); break; case (ATM_ID_BV1614A & FLASH_TYPEMASK): printf ("AT49BV1614A (16Mbit)\n"); break; default: printf ("Unknown Chip Type\n"); goto Done; break; } printf (" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); printf (" Sector Start Addresses:"); for (i = 0; i < info->sector_count; i++) { if ((i % 5) == 0) { printf ("\n "); } printf (" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " "); } printf ("\n"); Done: } /*----------------------------------------------------------------------- */ int flash_erase (flash_info_t * info, int s_first, int s_last) { ulong result; int iflag, cflag, prot, sect; int rc = ERR_OK; int chip1; /* 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) != (ATM_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 */ volatile u16 *addr = (volatile u16 *) (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 */ chip1 = 0; do { result = *addr; /* check timeout */ if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) { MEM_FLASH_ADDR1 = CMD_READ_ARRAY; chip1 = TMO; break; } if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE) chip1 = READY; } while (!chip1); MEM_FLASH_ADDR1 = CMD_READ_ARRAY; if (chip1 == ERR) { rc = ERR_PROG_ERROR; goto outahere; } if (chip1 == TMO) { rc = ERR_TIMOUT; goto outahere; } printf ("ok.\n"); } else { /* it was protected */ printf ("protected!\n"); } } if (ctrlc ()) printf ("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 */ volatile static int write_word (flash_info_t * info, ulong dest, ulong data) { volatile u16 *addr = (volatile u16 *) dest; ulong result; int rc = ERR_OK; int cflag, iflag; int chip1; /* * 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 */ chip1 = 0; do { result = *addr; /* check timeout */ if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) { chip1 = ERR | TMO; break; } if (!chip1 && ((result & 0x80) == (data & 0x80))) chip1 = READY; } while (!chip1); *addr = CMD_READ_ARRAY; if (chip1 == 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 wp, data; int rc; if (addr & 1) { printf ("unaligned destination not supported\n"); return ERR_ALIGN; }; if ((int) src & 1) { printf ("unaligned source not supported\n"); return ERR_ALIGN; }; wp = addr; while (cnt >= 2) { data = *((volatile u16 *) src); if ((rc = write_word (info, wp, data)) != 0) { return (rc); } src += 2; wp += 2; cnt -= 2; } if (cnt == 1) { data = (*((volatile u8 *) src)) | (*((volatile u8 *) (wp + 1)) << 8); if ((rc = write_word (info, wp, data)) != 0) { return (rc); } src += 1; wp += 1; cnt -= 1; }; return ERR_OK; }