/* * (C) Copyright 2000, 2001 * 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 */ /* * Modified 4/5/2001 * Wait for completion of each sector erase command issued * 4/5/2001 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com */ /* * Modified 3/7/2001 * - adapted for pip405, Denis Peter, MPL AG Switzerland * TODO: * clean-up */ #include #if !defined(CONFIG_PATI) #include #include #include "common_util.h" #if defined(CONFIG_MIP405) #include "../mip405/mip405.h" #endif #if defined(CONFIG_PIP405) #include "../pip405/pip405.h" #endif #include #else /* defined(CONFIG_PATI) */ #include #endif flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ /*----------------------------------------------------------------------- * Functions */ static ulong flash_get_size (vu_long *addr, flash_info_t *info); static int write_word (flash_info_t *info, ulong dest, ulong data); void unlock_intel_sectors(flash_info_t *info,ulong addr,ulong cnt); #define ADDR0 0x5555 #define ADDR1 0x2aaa #define FLASH_WORD_SIZE unsigned short #define FALSE 0 #define TRUE 1 #if !defined(CONFIG_PATI) /*----------------------------------------------------------------------- * Some CS switching routines: * * On PIP/MIP405 we have 3 (4) possible boot mode * * - Boot from Flash (Flash CS = CS0, MPS CS = CS1) * - Boot from MPS (Flash CS = CS1, MPS CS = CS0) * - Boot from PCI with Flash map (Flash CS = CS0, MPS CS = CS1) * - Boot from PCI with MPS map (Flash CS = CS1, MPS CS = CS0) * The flash init is the first board specific routine which is called * after code relocation (running from SDRAM) * The first thing we do is to map the Flash CS to the Flash area and * the MPS CS to the MPS area. Since the flash size is unknown at this * point, we use the max flash size and the lowest flash address as base. * * After flash detection we adjust the size of the CS area accordingly. * The board_init_r will fill in wrong values in the board init structure, * but this will be fixed in the misc_init_r routine: * bd->bi_flashstart=0-flash_info[0].size * bd->bi_flashsize=flash_info[0].size-CFG_MONITOR_LEN * bd->bi_flashoffset=0 * */ int get_boot_mode(void) { unsigned long pbcr; int res = 0; pbcr = mfdcr (strap); if ((pbcr & PSR_ROM_WIDTH_MASK) == 0) /* boot via MPS or MPS mapping */ res = BOOT_MPS; if(pbcr & PSR_ROM_LOC) /* boot via PCI.. */ res |= BOOT_PCI; return res; } /* Map the flash high (in boot area) This code can only be executed from SDRAM (after relocation). */ void setup_cs_reloc(void) { int mode; /* Since we are relocated, we can set-up the CS finaly * but first of all, switch off PCI mapping (in case it was a PCI boot) */ out32r(PMM0MA,0L); icache_enable (); /* we are relocated */ /* get boot mode */ mode=get_boot_mode(); /* we map the flash high in every case */ /* first findout on which cs the flash is */ if(mode & BOOT_MPS) { /* map flash high on CS1 and MPS on CS0 */ mtdcr (ebccfga, pb0ap); mtdcr (ebccfgd, MPS_AP); mtdcr (ebccfga, pb0cr); mtdcr (ebccfgd, MPS_CR); /* we use the default values (max values) for the flash * because its real size is not yet known */ mtdcr (ebccfga, pb1ap); mtdcr (ebccfgd, FLASH_AP); mtdcr (ebccfga, pb1cr); mtdcr (ebccfgd, FLASH_CR_B); } else { /* map flash high on CS0 and MPS on CS1 */ mtdcr (ebccfga, pb1ap); mtdcr (ebccfgd, MPS_AP); mtdcr (ebccfga, pb1cr); mtdcr (ebccfgd, MPS_CR); /* we use the default values (max values) for the flash * because its real size is not yet known */ mtdcr (ebccfga, pb0ap); mtdcr (ebccfgd, FLASH_AP); mtdcr (ebccfga, pb0cr); mtdcr (ebccfgd, FLASH_CR_B); } } #endif /* #if !defined(CONFIG_PATI) */ unsigned long flash_init (void) { unsigned long size_b0; int i; #if !defined(CONFIG_PATI) unsigned long size_b1,flashcr,size_reg; int mode; extern char version_string; char *p=&version_string; /* Since we are relocated, we can set-up the CS finally */ setup_cs_reloc(); /* get and display boot mode */ mode=get_boot_mode(); if(mode & BOOT_PCI) printf("(PCI Boot %s Map) ",(mode & BOOT_MPS) ? "MPS" : "Flash"); else printf("(%s Boot) ",(mode & BOOT_MPS) ? "MPS" : "Flash"); #endif /* #if !defined(CONFIG_PATI) */ /* Init: no FLASHes known */ for (i=0; i= CFG_FLASH_BASE flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE, CFG_MONITOR_BASE+monitor_flash_len-1, &flash_info[0]); #endif #if !defined(CONFIG_PATI) /* protect reset vector */ flash_info[0].protect[flash_info[0].sector_count-1] = 1; size_b1 = 0 ; flash_info[0].size = size_b0; /* set up flash cs according to the size */ size_reg=(flash_info[0].size >>20); switch (size_reg) { case 0: case 1: i=0; break; /* <= 1MB */ case 2: i=1; break; /* = 2MB */ case 4: i=2; break; /* = 4MB */ case 8: i=3; break; /* = 8MB */ case 16: i=4; break; /* = 16MB */ case 32: i=5; break; /* = 32MB */ case 64: i=6; break; /* = 64MB */ case 128: i=7; break; /*= 128MB */ default: printf("\n #### ERROR, wrong size %ld MByte reset board #####\n",size_reg); while(1); } if(mode & BOOT_MPS) { /* flash is on CS1 */ mtdcr(ebccfga, pb1cr); flashcr = mfdcr (ebccfgd); /* we map the flash high in every case */ flashcr&=0x0001FFFF; /* mask out address bits */ flashcr|= ((0-flash_info[0].size) & 0xFFF00000); /* start addr */ flashcr|= (i << 17); /* size addr */ mtdcr(ebccfga, pb1cr); mtdcr(ebccfgd, flashcr); } else { /* flash is on CS0 */ mtdcr(ebccfga, pb0cr); flashcr = mfdcr (ebccfgd); /* we map the flash high in every case */ flashcr&=0x0001FFFF; /* mask out address bits */ flashcr|= ((0-flash_info[0].size) & 0xFFF00000); /* start addr */ flashcr|= (i << 17); /* size addr */ mtdcr(ebccfga, pb0cr); mtdcr(ebccfgd, flashcr); } #if 0 /* enable this (PIP405/MIP405 only) if you want to test if the relocation has be done ok. This will disable both Chipselects */ mtdcr (ebccfga, pb0cr); mtdcr (ebccfgd, 0L); mtdcr (ebccfga, pb1cr); mtdcr (ebccfgd, 0L); printf("CS0 & CS1 switched off for test\n"); #endif /* patch version_string */ for(i=0;i<0x100;i++) { if(*p=='\n') { *p=0; break; } p++; } #else /* #if !defined(CONFIG_PATI) */ #ifdef CFG_ENV_IS_IN_FLASH /* ENV protection ON by default */ flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1, &flash_info[0]); #endif #endif /* #if !defined(CONFIG_PATI) */ return (size_b0); } /*----------------------------------------------------------------------- */ void flash_print_info (flash_info_t *info) { int i; int k; int size; int erased; volatile unsigned long *flash; if (info->flash_id == FLASH_UNKNOWN) { printf ("missing or unknown FLASH type\n"); return; } switch (info->flash_id & FLASH_VENDMASK) { case FLASH_MAN_AMD: printf ("AMD "); break; case FLASH_MAN_FUJ: printf ("FUJITSU "); break; case FLASH_MAN_SST: printf ("SST "); break; case FLASH_MAN_INTEL: printf ("Intel "); break; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n"); break; case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); break; case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); break; case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); break; case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); break; case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); break; case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); break; case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); break; case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); break; case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n"); break; case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n"); break; case FLASH_INTEL320T: printf ("TE28F320C3 (32 Mbit, top sector size)\n"); break; case FLASH_AM640U: printf ("AM29LV640U (64 Mbit, uniform sector size)\n"); break; default: printf ("Unknown Chip Type\n"); break; } printf (" Size: %ld KB in %d Sectors\n", info->size >> 10, info->sector_count); printf (" Sector Start Addresses:"); for (i=0; isector_count; ++i) { /* * Check if whole sector is erased */ if (i != (info->sector_count-1)) size = info->start[i+1] - info->start[i]; else size = info->start[0] + info->size - info->start[i]; erased = 1; flash = (volatile unsigned long *)info->start[i]; size = size >> 2; /* divide by 4 for longword access */ for (k=0; kstart[i], erased ? " E" : " ", info->protect[i] ? "RO " : " "); } printf ("\n"); } /*----------------------------------------------------------------------- */ /*----------------------------------------------------------------------- */ /* * The following code cannot be run from FLASH! */ static ulong flash_get_size (vu_long *addr, flash_info_t *info) { short i; FLASH_WORD_SIZE value; ulong base; volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr; /* Write auto select command: read Manufacturer ID */ addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090; value = addr2[0]; /* printf("flash_get_size value: %x\n",value); */ switch (value) { case (FLASH_WORD_SIZE)AMD_MANUFACT: info->flash_id = FLASH_MAN_AMD; break; case (FLASH_WORD_SIZE)FUJ_MANUFACT: info->flash_id = FLASH_MAN_FUJ; break; case (FLASH_WORD_SIZE)INTEL_MANUFACT: info->flash_id = FLASH_MAN_INTEL; break; case (FLASH_WORD_SIZE)SST_MANUFACT: info->flash_id = FLASH_MAN_SST; break; default: info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; return (0); /* no or unknown flash */ } value = addr2[1]; /* device ID */ /* printf("Device value %x\n",value); */ switch (value) { case (FLASH_WORD_SIZE)AMD_ID_F040B: info->flash_id += FLASH_AM040; info->sector_count = 8; info->size = 0x0080000; /* => 512 ko */ break; case (FLASH_WORD_SIZE)AMD_ID_LV400T: info->flash_id += FLASH_AM400T; info->sector_count = 11; info->size = 0x00080000; break; /* => 0.5 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV400B: info->flash_id += FLASH_AM400B; info->sector_count = 11; info->size = 0x00080000; break; /* => 0.5 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV800T: info->flash_id += FLASH_AM800T; info->sector_count = 19; info->size = 0x00100000; break; /* => 1 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV800B: info->flash_id += FLASH_AM800B; info->sector_count = 19; info->size = 0x00100000; break; /* => 1 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV160T: info->flash_id += FLASH_AM160T; info->sector_count = 35; info->size = 0x00200000; break; /* => 2 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV160B: info->flash_id += FLASH_AM160B; info->sector_count = 35; info->size = 0x00200000; break; /* => 2 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV320T: info->flash_id += FLASH_AM320T; info->sector_count = 67; info->size = 0x00400000; break; /* => 4 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV640U: info->flash_id += FLASH_AM640U; info->sector_count = 128; info->size = 0x00800000; break; /* => 8 MB */ #if 0 /* enable when device IDs are available */ case (FLASH_WORD_SIZE)AMD_ID_LV320B: info->flash_id += FLASH_AM320B; info->sector_count = 67; info->size = 0x00400000; break; /* => 4 MB */ #endif case (FLASH_WORD_SIZE)SST_ID_xF800A: info->flash_id += FLASH_SST800A; info->sector_count = 16; info->size = 0x00100000; break; /* => 1 MB */ case (FLASH_WORD_SIZE)INTEL_ID_28F320C3T: info->flash_id += FLASH_INTEL320T; info->sector_count = 71; info->size = 0x00400000; break; /* => 4 MB */ case (FLASH_WORD_SIZE)SST_ID_xF160A: info->flash_id += FLASH_SST160A; info->sector_count = 32; info->size = 0x00200000; break; /* => 2 MB */ default: info->flash_id = FLASH_UNKNOWN; return (0); /* => no or unknown flash */ } /* base address calculation */ base=0-info->size; /* set up sector start address table */ if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) || (info->flash_id == FLASH_AM040) || (info->flash_id == FLASH_AM640U)){ for (i = 0; i < info->sector_count; i++) info->start[i] = base + (i * 0x00010000); } else { if (info->flash_id & FLASH_BTYPE) { /* set sector offsets for bottom boot block type */ info->start[0] = base + 0x00000000; info->start[1] = base + 0x00004000; info->start[2] = base + 0x00006000; info->start[3] = base + 0x00008000; for (i = 4; i < info->sector_count; i++) info->start[i] = base + (i * 0x00010000) - 0x00030000; } else { /* set sector offsets for top boot block type */ i = info->sector_count - 1; if(info->sector_count==71) { info->start[i--] = base + info->size - 0x00002000; info->start[i--] = base + info->size - 0x00004000; info->start[i--] = base + info->size - 0x00006000; info->start[i--] = base + info->size - 0x00008000; info->start[i--] = base + info->size - 0x0000A000; info->start[i--] = base + info->size - 0x0000C000; info->start[i--] = base + info->size - 0x0000E000; for (; i >= 0; i--) info->start[i] = base + i * 0x000010000; } else { info->start[i--] = base + info->size - 0x00004000; info->start[i--] = base + info->size - 0x00006000; info->start[i--] = base + info->size - 0x00008000; for (; i >= 0; i--) info->start[i] = base + i * 0x00010000; } } } /* check for protected sectors */ for (i = 0; i < info->sector_count; i++) { /* read sector protection at sector address, (A7 .. A0) = 0x02 */ /* D0 = 1 if protected */ addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]); if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) info->protect[i] = 0; else info->protect[i] = addr2[2] & 1; } /* * Prevent writes to uninitialized FLASH. */ if (info->flash_id != FLASH_UNKNOWN) { addr2 = (FLASH_WORD_SIZE *)info->start[0]; *addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ } return (info->size); } int wait_for_DQ7(flash_info_t *info, int sect) { ulong start, now, last; volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]); start = get_timer (0); last = start; while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) { if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { printf ("Timeout\n"); return ERR_TIMOUT; } /* show that we're waiting */ if ((now - last) > 1000) { /* every second */ putc ('.'); last = now; } } return ERR_OK; } int intel_wait_for_DQ7(flash_info_t *info, int sect) { ulong start, now, last, status; volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]); start = get_timer (0); last = start; while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) { if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { printf ("Timeout\n"); return ERR_TIMOUT; } /* show that we're waiting */ if ((now - last) > 1000) { /* every second */ putc ('.'); last = now; } } status = addr[0] & (FLASH_WORD_SIZE)0x00280028; /* clear status register */ addr[0] = (FLASH_WORD_SIZE)0x00500050; /* check status for block erase fail and VPP low */ return (status == 0 ? ERR_OK : ERR_NOT_ERASED); } /*----------------------------------------------------------------------- */ int flash_erase (flash_info_t *info, int s_first, int s_last) { volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]); volatile FLASH_WORD_SIZE *addr2; int flag, prot, sect, l_sect; int i, rcode = 0; if ((s_first < 0) || (s_first > s_last)) { if (info->flash_id == FLASH_UNKNOWN) { printf ("- missing\n"); } else { printf ("- no sectors to erase\n"); } return 1; } if (info->flash_id == FLASH_UNKNOWN) { printf ("Can't erase unknown flash type - aborted\n"); return 1; } prot = 0; for (sect=s_first; sect<=s_last; ++sect) { if (info->protect[sect]) { prot++; } } if (prot) { printf ("- Warning: %d protected sectors will not be erased!\n", prot); } else { printf ("\n"); } l_sect = -1; /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); /* Start erase on unprotected sectors */ for (sect = s_first; sect<=s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ addr2 = (FLASH_WORD_SIZE *)(info->start[sect]); /* printf("Erasing sector %p\n", addr2); */ /* CLH */ if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) { addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080; addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr2[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */ for (i=0; i<50; i++) udelay(1000); /* wait 1 ms */ rcode |= wait_for_DQ7(info, sect); } else { if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){ addr2[0] = (FLASH_WORD_SIZE)0x00600060; /* unlock sector */ addr2[0] = (FLASH_WORD_SIZE)0x00D000D0; /* sector erase */ intel_wait_for_DQ7(info, sect); addr2[0] = (FLASH_WORD_SIZE)0x00200020; /* sector erase */ addr2[0] = (FLASH_WORD_SIZE)0x00D000D0; /* sector erase */ rcode |= intel_wait_for_DQ7(info, sect); } else { addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080; addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr2[0] = (FLASH_WORD_SIZE)0x00300030; /* sector erase */ rcode |= wait_for_DQ7(info, sect); } } l_sect = sect; /* * Wait for each sector to complete, it's more * reliable. According to AMD Spec, you must * issue all erase commands within a specified * timeout. This has been seen to fail, especially * if printf()s are included (for debug)!! */ /* wait_for_DQ7(info, sect); */ } } /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* wait at least 80us - let's wait 1 ms */ udelay (1000); #if 0 /* * We wait for the last triggered sector */ if (l_sect < 0) goto DONE; wait_for_DQ7(info, l_sect); DONE: #endif /* reset to read mode */ addr = (FLASH_WORD_SIZE *)info->start[0]; addr[0] = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ if (!rcode) printf (" done\n"); return rcode; } void unlock_intel_sectors(flash_info_t *info,ulong addr,ulong cnt) { int i; volatile FLASH_WORD_SIZE *addr2; long c; c= (long)cnt; for(i=info->sector_count-1;i>0;i--) { if(addr>=info->start[i]) break; } do { addr2 = (FLASH_WORD_SIZE *)(info->start[i]); addr2[0] = (FLASH_WORD_SIZE)0x00600060; /* unlock sector setup */ addr2[0] = (FLASH_WORD_SIZE)0x00D000D0; /* unlock sector */ intel_wait_for_DQ7(info, i); i++; c-=(info->start[i]-info->start[i-1]); }while(c>0); } /*----------------------------------------------------------------------- * Copy memory to flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) { ulong cp, wp, data; int i, l, rc; if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){ unlock_intel_sectors(info,addr,cnt); } wp = (addr & ~3); /* get lower word aligned address */ /* * handle unaligned start bytes */ if ((l = addr - wp) != 0) { data = 0; for (i=0, cp=wp; i0; ++i) { data = (data << 8) | *src++; --cnt; ++cp; } for (; cnt==0 && i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; } /* * handle word aligned part */ while (cnt >= 4) { data = 0; for (i=0; i<4; ++i) { data = (data << 8) | *src++; } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; if((wp % 0x10000)==0) printf("."); /* show Progress */ cnt -= 4; } if (cnt == 0) { return (0); } /* * handle unaligned tail bytes */ data = 0; for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { data = (data << 8) | *src++; --cnt; } for (; i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } rc=write_word(info, wp, data); return rc; } /*----------------------------------------------------------------------- * Write a word to Flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ static FLASH_WORD_SIZE *read_val = (FLASH_WORD_SIZE *)0x200000; static int write_word (flash_info_t *info, ulong dest, ulong data) { volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)(info->start[0]); volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *)dest; volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data; ulong start; int flag; int i; /* Check if Flash is (sufficiently) erased */ if ((*((volatile FLASH_WORD_SIZE *)dest) & (FLASH_WORD_SIZE)data) != (FLASH_WORD_SIZE)data) { return (2); } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); for (i=0; i<4/sizeof(FLASH_WORD_SIZE); i++) { if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){ /* intel style writting */ dest2[i] = (FLASH_WORD_SIZE)0x00500050; dest2[i] = (FLASH_WORD_SIZE)0x00400040; *read_val++ = data2[i]; dest2[i] = data2[i]; if (flag) enable_interrupts(); /* data polling for D7 */ start = get_timer (0); udelay(10); while ((dest2[i] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1); } dest2[i] = (FLASH_WORD_SIZE)0x00FF00FF; /* return to read mode */ udelay(10); dest2[i] = (FLASH_WORD_SIZE)0x00FF00FF; /* return to read mode */ if(dest2[i]!=data2[i]) printf("Error at %p 0x%04X != 0x%04X\n",&dest2[i],dest2[i],data2[i]); } else { addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr2[ADDR0] = (FLASH_WORD_SIZE)0x00A000A0; dest2[i] = data2[i]; /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* data polling for D7 */ start = get_timer (0); while ((dest2[i] & (FLASH_WORD_SIZE)0x00800080) != (data2[i] & (FLASH_WORD_SIZE)0x00800080)) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { return (1); } } } } return (0); } /*----------------------------------------------------------------------- */