/* * (C) Copyright 2002 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Marius Groeger <mgroeger@sysgo.de> * * (C) Copyright 2002 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.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> #include <asm/arch/pxa-regs.h> #define FLASH_BANK_SIZE 0x02000000 #define MAIN_SECT_SIZE 0x40000 /* 2x16 = 256k per sector */ flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /** * flash_init: - initialize data structures for flash chips * * @return: size of the flash */ 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 = (INTEL_MANUFACT & FLASH_VENDMASK) | (INTEL_ID_28F128J3 & FLASH_TYPEMASK); 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); switch (i) { case 0: flashbase = PHYS_FLASH_1; break; default: panic("configured to many flash banks!\n"); break; } for (j = 0; j < flash_info[i].sector_count; j++) { flash_info[i].start[j] = flashbase + j*MAIN_SECT_SIZE; } size += flash_info[i].size; } /* Protect monitor and environment sectors */ 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; } /** * flash_print_info: - print information about the flash situation * * @param info: */ void flash_print_info (flash_info_t *info) { int i, j; for (j=0; j<CFG_MAX_FLASH_BANKS; j++) { switch (info->flash_id & FLASH_VENDMASK) { case (INTEL_MANUFACT & FLASH_VENDMASK): printf("Intel: "); break; default: printf("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case (INTEL_ID_28F128J3 & FLASH_TYPEMASK): printf("28F128J3 (128Mbit)\n"); break; default: printf("Unknown Chip Type\n"); return; } 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"); info++; } } /** * flash_erase: - erase flash sectors * */ int flash_erase(flash_info_t *info, int s_first, int s_last) { int flag, prot, sect; int rc = ERR_OK; 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) != (INTEL_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. */ flag = 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 */ u32 * volatile addr = (u32 * volatile)(info->start[sect]); /* erase sector: */ /* The strata flashs are aligned side by side on */ /* the data bus, so we have to write the commands */ /* to both chips here: */ *addr = 0x00200020; /* erase setup */ *addr = 0x00D000D0; /* erase confirm */ while ((*addr & 0x00800080) != 0x00800080) { if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) { *addr = 0x00B000B0; /* suspend erase*/ *addr = 0x00FF00FF; /* read mode */ rc = ERR_TIMOUT; goto outahere; } } *addr = 0x00500050; /* clear status register cmd. */ *addr = 0x00FF00FF; /* resest to read mode */ } printf("ok.\n"); } if (ctrlc()) printf("User Interrupt!\n"); outahere: /* allow flash to settle - wait 10 ms */ udelay_masked(10000); if (flag) enable_interrupts(); return rc; } /** * write_word: - copy memory to flash * * @param info: * @param dest: * @param data: * @return: */ static int write_word (flash_info_t *info, ulong dest, ushort data) { u32 * volatile addr = (u32 * volatile)dest, val; int rc = ERR_OK; int flag; /* Check if Flash is (sufficiently) erased */ if ((*addr & 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. */ flag = disable_interrupts(); /* clear status register command */ *addr = 0x50; /* program set-up command */ *addr = 0x40; /* latch address/data */ *addr = data; /* arm simple, non interrupt dependent timer */ reset_timer_masked(); /* wait while polling the status register */ while(((val = *addr) & 0x80) != 0x80) { if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) { rc = ERR_TIMOUT; *addr = 0xB0; /* suspend program command */ goto outahere; } } if(val & 0x1A) { /* check for error */ printf("\nFlash write error %02x at address %08lx\n", (int)val, (unsigned long)dest); if(val & (1<<3)) { printf("Voltage range error.\n"); rc = ERR_PROG_ERROR; goto outahere; } if(val & (1<<1)) { printf("Device protect error.\n"); rc = ERR_PROTECTED; goto outahere; } if(val & (1<<4)) { printf("Programming error.\n"); rc = ERR_PROG_ERROR; goto outahere; } rc = ERR_PROG_ERROR; goto outahere; } outahere: *addr = 0xFF; /* read array command */ if (flag) enable_interrupts(); return rc; } /** * write_buf: - Copy memory to flash. * * @param info: * @param src: source of copy transaction * @param addr: where to copy to * @param cnt: number of bytes to copy * * @return error code */ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) { ulong cp, wp; ushort data; int l; int i, rc; 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_word(info, wp, data)) != 0) { return (rc); } wp += 2; } /* * handle word aligned part */ while (cnt >= 2) { /* data = *((vushort*)src); */ data = *((ushort*)src); if ((rc = write_word(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_word(info, wp, data); }