diff options
Diffstat (limited to 'board/mcc200/flash.c')
| -rw-r--r-- | board/mcc200/flash.c | 738 |
1 files changed, 0 insertions, 738 deletions
diff --git a/board/mcc200/flash.c b/board/mcc200/flash.c deleted file mode 100644 index 8e1757a..0000000 --- a/board/mcc200/flash.c +++ /dev/null @@ -1,738 +0,0 @@ -/* - * (C) Copyright 2001 - * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net - * - * (C) Copyright 2001-2006 - * 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 - */ - -#include <common.h> -#include <linux/byteorder/swab.h> -#include <flash.h> - -//###CHD: gehört wieder raus ist vom PXA271 file! -#define FLASH_28F256L18T 0x00B0 /* Intel 28F256L18T ( 32M = 128K x 255 + 32k x 4) */ -#define FLASH_28F256L18B 0x00B1 /* Intel 28F256L18B ( 32M = 32k x 4 + 128K x 255) */ -#define FLASH_28F256P30B 0x001C /* Intel 28F256P30B ( 32M = 32k x 4 + 128K x 255) */ -#define FLASH_28F256P30T 0x0019 /* Intel 28F256P30T ( 128K x 255 + 32M = 32k x 4 + */ - -#define INTEL_ID_28F016S 0x66a066a0 /* 28F016S[VS] ID (16M = 512k x 16) */ -#define INTEL_ID_28F800B3T 0x88928892 /* 8M = 512K x 16 top boot sector */ -#define INTEL_ID_28F800B3B 0x88938893 /* 8M = 512K x 16 bottom boot sector */ -#define INTEL_ID_28F160B3T 0x88908890 /* 16M = 1M x 16 top boot sector */ -#define INTEL_ID_28F160B3B 0x88918891 /* 16M = 1M x 16 bottom boot sector */ -#define INTEL_ID_28F320B3T 0x88968896 /* 32M = 2M x 16 top boot sector */ -#define INTEL_ID_28F320B3B 0x88978897 /* 32M = 2M x 16 bottom boot sector */ -#define INTEL_ID_28F640B3T 0x88988898 /* 64M = 4M x 16 top boot sector */ -#define INTEL_ID_28F640B3B 0x88998899 /* 64M = 4M x 16 bottom boot sector */ -#define INTEL_ID_28F160F3B 0x88F488F4 /* 16M = 1M x 16 bottom boot sector */ - -#define INTEL_ID_28F800C3T 0x88C088C0 /* 8M = 512K x 16 top boot sector */ -#define INTEL_ID_28F800C3B 0x88C188C1 /* 8M = 512K x 16 bottom boot sector */ -#define INTEL_ID_28F160C3T 0x88C288C2 /* 16M = 1M x 16 top boot sector */ -#define INTEL_ID_28F160C3B 0x88C388C3 /* 16M = 1M x 16 bottom boot sector */ -#define INTEL_ID_28F320C3T 0x88C488C4 /* 32M = 2M x 16 top boot sector */ -#define INTEL_ID_28F320C3B 0x88C588C5 /* 32M = 2M x 16 bottom boot sector */ -#define INTEL_ID_28F640C3T 0x88CC88CC /* 64M = 4M x 16 top boot sector */ -#define INTEL_ID_28F640C3B 0x88CD88CD /* 64M = 4M x 16 bottom boot sector */ - -#define INTEL_ID_28F128J3 0x89188918 /* 16M = 8M x 16 x 128 */ -#define INTEL_ID_28F320J5 0x00140014 /* 32M = 128K x 32 */ -#define INTEL_ID_28F640J5 0x00150015 /* 64M = 128K x 64 */ -#define INTEL_ID_28F320J3A 0x00160016 /* 32M = 128K x 32 */ -#define INTEL_ID_28F640J3A 0x00170017 /* 64M = 128K x 64 */ -#define INTEL_ID_28F256L18 0x88108810 /* 32M = 128K x 255 */ -#define INTEL_ID_28F128J3A 0x00180018 /* 128M = 128K x 128 */ -#define INTEL_ID_28F256L18T 0x880D880D /* 256M = 128K x 255 + 32k x 4 */ -#define INTEL_ID_28F256L18B 0x88108810 /* 256M = 32k x 4 + 128K x 255 */ -#define INTEL_ID_28F256P30B 0x891C891C /* 256M = 32k x 4 + 128K x 255 */ -#define INTEL_ID_28F256P30T 0x89198919 /* 256M = 128K x 255 + 32k x 4 */ -#define INTEL_ID_28F64K3 0x88018801 /* 64M = 32K x 255 + 32k x 4 */ -#define INTEL_ID_28F128K3 0x88028802 /* 128M = 64K x 255 + 32k x 4 */ -#define INTEL_ID_28F256K3 0x88038803 /* 256M = 128K x 255 + 32k x 4 */ - -#define INTEL_ID_28F160S3 0x00D000D0 /* 16M = 512K x 32 (64kB x 32) */ -#define INTEL_ID_28F320S3 0x00D400D4 /* 32M = 512K x 64 (64kB x 64) */ - - -flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ - -/* Board support for 1 or 2 flash devices */ -#define FLASH_PORT_WIDTH32 -#undef FLASH_PORT_WIDTH16 - -#ifdef FLASH_PORT_WIDTH16 -#define FLASH_PORT_WIDTH ushort -#define FLASH_PORT_WIDTHV vu_short -#define SWAP(x) (x) -#else -#define FLASH_PORT_WIDTH ulong -#define FLASH_PORT_WIDTHV vu_long -#define SWAP(x) (x) -#endif - -/* Intel-compatible flash ID */ -#define INTEL_COMPAT 0x00890089 -#define INTEL_ALT 0x00B000B0 - - - -/* Intel-compatible flash commands */ -#define INTEL_PROGRAM 0x00100010 -#define INTEL_ERASE 0x00200020 -#define INTEL_CLEAR 0x00500050 -#define INTEL_LOCKBIT 0x00600060 -#define INTEL_PROTECT 0x00010001 -#define INTEL_STATUS 0x00700070 -#define INTEL_READID 0x00900090 -#define INTEL_CONFIRM 0x00D000D0 -#define INTEL_RESET 0xFFFFFFFF - -/* Intel-compatible flash status bits */ -#define INTEL_FINISHED 0x00800080 -#define INTEL_OK 0x00800080 - -#define FPW FLASH_PORT_WIDTH -#define FPWV FLASH_PORT_WIDTHV - -#define mb() __asm__ __volatile__ ("" : : : "memory") - -///###CHD: auch wieder raus! + switch anweisung für den P30iger! -/* Flash Organization Structure */ -typedef struct OrgDef { - unsigned int sector_number; - unsigned int sector_size; -} OrgDef; - -/* Flash Organizations */ -OrgDef OrgIntel_28F256L18B[] = { - {4, 0x8000}, /* 4 * 32kBytes sectors */ - {255, 0x20000}, /* 255 * 128kBytes sectors */ -}; - -OrgDef OrgIntel_28F256L18T[] = { - {255, 0x20000}, /* 255 * 128kBytes sectors */ - {4, 0x8000} /* 4 * 32kBytes sectors */ -}; - -OrgDef OrgIntel_28F128J3A[] = { - {128, 0x20000}, /* 128 * 128kBytes sectors */ -}; -static unsigned int OrgSectTypeNum_28F256L18 = 2; -static unsigned int OrgSectTypeNum_28F256J3 = 1; - -/*----------------------------------------------------------------------- - * Functions - */ -static ulong flash_get_size (FPW *addr, flash_info_t *info); -static int write_data (flash_info_t *info, ulong dest, FPW data); -static void flash_get_offsets (ulong base, flash_info_t *info); -void inline spin_wheel (void); -static void flash_sync_real_protect (flash_info_t * info); -static unsigned char intel_sector_protected (flash_info_t *info, ushort sector); - -/*----------------------------------------------------------------------- - */ - -unsigned long flash_init (void) -{ - int i; - ulong size = 0; - extern void flash_preinit(void); - extern void flash_afterinit(ulong, ulong); - ulong flashbase = CFG_FLASH_BASE; - - flash_preinit(); - - for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { - switch (i) { - case 0: - memset(&flash_info[i], 0, sizeof(flash_info_t)); - flash_get_size ((FPW *) flashbase, &flash_info[i]); - flash_get_offsets (flash_info[i].start[0], &flash_info[i]); - break; - default: - panic ("configured to many flash banks!\n"); - break; - } - size += flash_info[i].size; - - /* get the h/w and s/w protection status in sync */ - flash_sync_real_protect(&flash_info[i]); - } - - /* Protect monitor and environment sectors - */ -#if CFG_MONITOR_BASE >= CFG_FLASH_BASE -#ifndef CONFIG_BOOT_ROM - flash_protect ( FLAG_PROTECT_SET, - CFG_MONITOR_BASE, - CFG_MONITOR_BASE + monitor_flash_len - 1, - &flash_info[0] ); -#endif -#endif - -#ifdef CFG_ENV_IS_IN_FLASH - flash_protect ( FLAG_PROTECT_SET, - CFG_ENV_ADDR, - CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0] ); -#endif - - flash_afterinit(flash_info[0].start[0], flash_info[0].size); - - return size; -} - -/*----------------------------------------------------------------------- - */ -static void flash_get_offsets (ulong base, flash_info_t *info) -{ - int i; - - if (info->flash_id == FLASH_UNKNOWN) { - return; - } - - if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { - for (i = 0; i < info->sector_count; i++) { - info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE); - } - } -} - -/*----------------------------------------------------------------------- - */ -void flash_print_info (flash_info_t *info) -{ - int i; - - if (info->flash_id == FLASH_UNKNOWN) { - printf ("missing or unknown FLASH type\n"); - return; - } - - switch (info->flash_id & FLASH_VENDMASK) { - case FLASH_MAN_INTEL: - printf ("INTEL "); - break; - default: - printf ("Unknown Vendor "); - break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_28F128J3A: - printf ("28F128J3A\n"); - break; - - case FLASH_28F640J3A: - printf ("28F640J3A\n"); - break; - - case FLASH_28F320J3A: - printf ("28F320J3A\n"); - break; - - case FLASH_28F256P30T: - printf ("FLASH_28F256P30T\n"); - break; - - default: - printf ("Unknown Chip Type\n"); - 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"); - return; -} - -/* - * The following code cannot be run from FLASH! - */ -static ulong flash_get_size (FPW *addr, flash_info_t *info) -{ - volatile FPW value; - - /* Write auto select command: read Manufacturer ID */ - addr[0x5555] = (FPW) 0x00AA00AA; - addr[0x2AAA] = (FPW) 0x00550055; - addr[0x5555] = (FPW) 0x00900090; - - mb (); - udelay(100); - - value = addr[0]; - - switch (value) { - - case (FPW) INTEL_MANUFACT: - info->flash_id = FLASH_MAN_INTEL; - break; - - default: - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - addr[0] = (FPW) 0x00FF00FF; /* restore read mode */ - return (0); /* no or unknown flash */ - } - - mb (); - value = addr[1]; /* device ID */ - - switch (value) { - - case (FPW) INTEL_ID_28F128J3A: - info->flash_id += FLASH_28F128J3A; - info->sector_count = 128; - info->size = 0x02000000; - info->start[0] = CFG_FLASH_BASE; - break; /* => 32 MB */ - - case (FPW) INTEL_ID_28F640J3A: - info->flash_id += FLASH_28F640J3A; - info->sector_count = 64; - info->size = 0x01000000; - info->start[0] = CFG_FLASH_BASE + 0x01000000; - break; /* => 16 MB */ - - case (FPW) (INTEL_ID_28F256P30T): - info->flash_id += FLASH_28F256L18B; - info->sector_count = 128;//falsch!!! - info->size = 0x02000000; - info->start[0] = CFG_FLASH_BASE; - debug ("Intel StrataFlash 28F256P30T device initialized\n"); - break; /* => 32 MB */ - - case (FPW) INTEL_ID_28F320J3A: - info->flash_id += FLASH_28F320J3A; - info->sector_count = 32; - info->size = 0x800000; - info->start[0] = CFG_FLASH_BASE + 0x01800000; - break; /* => 8 MB */ - - default: - info->flash_id = FLASH_UNKNOWN; - break; - } - - if (info->sector_count > CFG_MAX_FLASH_SECT) { - printf ("** ERROR: sector count %d > max (%d) **\n", - info->sector_count, CFG_MAX_FLASH_SECT); - info->sector_count = CFG_MAX_FLASH_SECT; - } - - addr[0] = (FPW) 0x00FF00FF; /* restore read mode */ - - return (info->size); -} - - -/* - * This function gets the u-boot flash sector protection status - * (flash_info_t.protect[]) in sync with the sector protection - * status stored in hardware. - */ -static void flash_sync_real_protect (flash_info_t * info) -{ - int i; - - switch (info->flash_id & FLASH_TYPEMASK) { - - case FLASH_28F128J3A: - case FLASH_28F640J3A: - case FLASH_28F320J3A: - for (i = 0; i < info->sector_count; ++i) { - info->protect[i] = intel_sector_protected(info, i); - } - break; - default: - /* no h/w protect support */ - break; - } -} - - -/* - * checks if "sector" in bank "info" is protected. Should work on intel - * strata flash chips 28FxxxJ3x in 8-bit mode. - * Returns 1 if sector is protected (or timed-out while trying to read - * protection status), 0 if it is not. - */ -static unsigned char intel_sector_protected (flash_info_t *info, ushort sector) -{ - FPWV *addr; - FPWV *lock_conf_addr; - ulong start; - unsigned char ret; - - /* - * first, wait for the WSM to be finished. The rationale for - * waiting for the WSM to become idle for at most - * CFG_FLASH_ERASE_TOUT is as follows. The WSM can be busy - * because of: (1) erase, (2) program or (3) lock bit - * configuration. So we just wait for the longest timeout of - * the (1)-(3), i.e. the erase timeout. - */ - - /* wait at least 35ns (W12) before issuing Read Status Register */ - udelay(1); - addr = (FPWV *) info->start[sector]; - *addr = (FPW) INTEL_STATUS; - - start = get_timer (0); - while ((*addr & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED) { - if (get_timer (start) > CFG_FLASH_ERASE_TOUT) { - *addr = (FPW) INTEL_RESET; /* restore read mode */ - printf("WSM busy too long, can't get prot status\n"); - return 1; - } - } - - /* issue the Read Identifier Codes command */ - *addr = (FPW) INTEL_READID; - - /* wait at least 35ns (W12) before reading */ - udelay(1); - - /* Intel example code uses offset of 2 for 16 bit flash */ - lock_conf_addr = (FPWV *) info->start[sector] + 2; - ret = (*lock_conf_addr & (FPW) INTEL_PROTECT) ? 1 : 0; - - /* put flash back in read mode */ - *addr = (FPW) INTEL_RESET; - - return ret; -} - -/*----------------------------------------------------------------------- - */ - -int flash_erase (flash_info_t *info, int s_first, int s_last) -{ - int flag, prot, sect; - ulong type, start, last; - int 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; - } - - type = (info->flash_id & FLASH_VENDMASK); - if ((type != FLASH_MAN_INTEL)) { - printf ("Can't erase unknown flash type %08lx - aborted\n", - info->flash_id); - 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"); - } - - start = get_timer (0); - last = start; - - /* 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 */ - FPWV *addr = (FPWV *) (info->start[sect]); - FPW status; - - printf ("Erasing sector %2d ... ", sect); - - /* arm simple, non interrupt dependent timer */ - start = get_timer(0); - - *addr = (FPW) 0x00500050; /* clear status register */ - *addr = (FPW) 0x00200020; /* erase setup */ - *addr = (FPW) 0x00D000D0; /* erase confirm */ - - while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) { - if (get_timer(start) > CFG_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - *addr = (FPW) 0x00B000B0; /* suspend erase */ - *addr = (FPW) 0x00FF00FF; /* reset to read mode */ - rcode = 1; - break; - } - } - - *addr = 0x00500050; /* clear status register cmd. */ - *addr = 0x00FF00FF; /* resest to read mode */ - - printf (" done\n"); - } - } - return rcode; -} - -/*----------------------------------------------------------------------- - * Copy memory to flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - * 4 - Flash not identified - */ - -int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) -{ - ulong cp, wp; - FPW data; - int count, i, l, rc, port_width; - - if (info->flash_id == FLASH_UNKNOWN) { - return 4; - } -/* get lower word aligned address */ -#ifdef FLASH_PORT_WIDTH16 - wp = (addr & ~1); - port_width = 2; -#else - wp = (addr & ~3); - port_width = 4; -#endif - - /* - * 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); - } - for (; i < port_width && cnt > 0; ++i) { - data = (data << 8) | *src++; - --cnt; - ++cp; - } - for (; cnt == 0 && i < port_width; ++i, ++cp) { - data = (data << 8) | (*(uchar *) cp); - } - - if ((rc = write_data (info, wp, SWAP (data))) != 0) { - return (rc); - } - wp += port_width; - } - - /* - * handle word aligned part - */ - count = 0; - while (cnt >= port_width) { - data = 0; - for (i = 0; i < port_width; ++i) { - data = (data << 8) | *src++; - } - if ((rc = write_data (info, wp, SWAP (data))) != 0) { - return (rc); - } - wp += port_width; - cnt -= port_width; - if (count++ > 0x800) { - spin_wheel (); - count = 0; - } - } - - if (cnt == 0) { - return (0); - } - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) { - data = (data << 8) | *src++; - --cnt; - } - for (; i < port_width; ++i, ++cp) { - data = (data << 8) | (*(uchar *) cp); - } - - return (write_data (info, wp, SWAP (data))); -} - -/*----------------------------------------------------------------------- - * Write a word or halfword to Flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_data (flash_info_t *info, ulong dest, FPW data) -{ - FPWV *addr = (FPWV *) dest; - ulong status; - ulong start; - int flag; - - /* Check if Flash is (sufficiently) erased */ - if ((*addr & data) != data) { - printf ("not erased at %08lx (%lx)\n", (ulong) addr, *addr); - return (2); - } - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts (); - - *addr = (FPW) 0x00400040; /* write setup */ - *addr = data; - - /* arm simple, non interrupt dependent timer */ - start = get_timer(0); - - /* wait while polling the status register */ - while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) { - if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { - *addr = (FPW) 0x00FF00FF; /* restore read mode */ - return (1); - } - } - - *addr = (FPW) 0x00FF00FF; /* restore read mode */ - - return (0); -} - -void inline spin_wheel (void) -{ - static int p = 0; - static char w[] = "\\/-"; - - printf ("\010%c", w[p]); - (++p == 3) ? (p = 0) : 0; -} - -/*----------------------------------------------------------------------- - * Set/Clear sector's lock bit, returns: - * 0 - OK - * 1 - Error (timeout, voltage problems, etc.) - */ -int flash_real_protect (flash_info_t *info, long sector, int prot) -{ - ulong start; - int i; - int rc = 0; - vu_long *addr = (vu_long *)(info->start[sector]); - int flag = disable_interrupts(); - - *addr = INTEL_CLEAR; /* Clear status register */ - if (prot) { /* Set sector lock bit */ - *addr = INTEL_LOCKBIT; /* Sector lock bit */ - *addr = INTEL_PROTECT; /* set */ - } - else { /* Clear sector lock bit */ - *addr = INTEL_LOCKBIT; /* All sectors lock bits */ - *addr = INTEL_CONFIRM; /* clear */ - } - - start = get_timer(0); - - while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) { - if (get_timer(start) > CFG_FLASH_UNLOCK_TOUT) { - printf("Flash lock bit operation timed out\n"); - rc = 1; - break; - } - } - - if (*addr != INTEL_OK) { - printf("Flash lock bit operation failed at %08X, CSR=%08X\n", - (uint)addr, (uint)*addr); - rc = 1; - } - - if (!rc) - info->protect[sector] = prot; - - /* - * Clear lock bit command clears all sectors lock bits, so - * we have to restore lock bits of protected sectors. - * WARNING: code below re-locks sectors only for one bank (info). - * This causes problems on boards where several banks share - * the same chip, as sectors in othere banks will be unlocked - * but not re-locked. It works fine on pm520 though, as there - * is only one chip and one bank. - */ - if (!prot) - { - for (i = 0; i < info->sector_count; i++) - { - if (info->protect[i]) - { - start = get_timer(0); - addr = (vu_long *)(info->start[i]); - *addr = INTEL_LOCKBIT; /* Sector lock bit */ - *addr = INTEL_PROTECT; /* set */ - while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) - { - if (get_timer(start) > CFG_FLASH_UNLOCK_TOUT) - { - printf("Flash lock bit operation timed out\n"); - rc = 1; - break; - } - } - } - } - /* - * get the s/w sector protection status in sync with the h/w, - * in case something went wrong during the re-locking. - */ - flash_sync_real_protect(info); /* resets flash to read mode */ - } - - if (flag) - enable_interrupts(); - - *addr = INTEL_RESET; /* Reset to read array mode */ - - return rc; -} |