+++ /dev/null
-/*
- * (C) Copyright 2001
- * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
- *
- * (C) Copyright 2001-2004
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2003
- * Texas Instruments, <www.ti.com>
- * Kshitij Gupta <Kshitij@ti.com>
- *
- * 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/sizes.h>
-#include <linux/byteorder/swab.h>
-
-#define PHYS_FLASH_SECT_SIZE SZ_128K
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-/* Board support for 1 or 2 flash devices */
-#undef FLASH_PORT_WIDTH32
-#define FLASH_PORT_WIDTH16
-
-#ifdef FLASH_PORT_WIDTH16
-# define FLASH_PORT_WIDTH ushort
-# define FLASH_PORT_WIDTHV vu_short
-# define SWAP(x) __swab16(x)
-#else
-# define FLASH_PORT_WIDTH ulong
-# define FLASH_PORT_WIDTHV vu_long
-# define SWAP(x) __swab32(x)
-#endif
-
-#define FPW FLASH_PORT_WIDTH
-#define FPWV FLASH_PORT_WIDTHV
-
-#define mb() __asm__ __volatile__ ("" : : : "memory")
-
-
-/* Flash Organization Structure */
-typedef struct OrgDef {
- unsigned int sector_number;
- unsigned int sector_size;
-} OrgDef;
-
-
-/* Flash Organizations */
-OrgDef OrgIntel_28F256L18T[] = {
- {4, SZ_32K}, /* 4 * 32kBytes sectors */
- {255, SZ_128K}, /* 255 * 128kBytes sectors */
-};
-
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-unsigned long flash_init (void);
-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);
-void flash_print_info (flash_info_t * info);
-void flash_unprotect_sectors (FPWV * addr);
-int flash_erase (flash_info_t * info, int s_first, int s_last);
-int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt);
-void flash_unlock(flash_info_t * info, int bank);
-int flash_probe(void);
-
-/*-----------------------------------------------------------------------
- */
-
-/* see if flash is ok */
-int flash_probe(void)
-{
- return(flash_get_size ((FPW *) PHYS_FLASH_1, &flash_info[0]));
-}
-
-unsigned long flash_init (void)
-{
- int i;
- ulong size = 0;
- for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
- switch (i) {
- case 0:
- flash_get_size ((FPW *) PHYS_FLASH_1, &flash_info[i]);
- flash_get_offsets (PHYS_FLASH_1, &flash_info[i]);
- /* to reset the lock bit */
- flash_unlock(&flash_info[i],i);
- break;
- case 1:
- flash_get_size ((FPW *) PHYS_FLASH_2, &flash_info[i]);
- flash_get_offsets (PHYS_FLASH_2, &flash_info[i]);
- /* to reset the lock bit */
- flash_unlock(&flash_info[i],i);
- break;
-
- default:
- panic ("configured too many flash banks!\n");
- break;
- }
- size += flash_info[i].size;
- }
-
-#ifdef CFG_ENV_IS_IN_FLASH
- /* 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]);
-#endif
- return size;
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_unlock(flash_info_t * info, int bank)
-{
- int j;
- if (!bank)
- j=2; /* leave 0,1 locked for boot bank */
- else
- j=0; /* get the whole bank for #2 */
-
- for (;j<CFG_MAX_FLASH_SECT;j++) {
- FPWV *addr = (FPWV *) (info->start[j]);
- if (addr == NULL) {
- printf("Warning Flash probe failed\n");
- break;
- }
- flash_unprotect_sectors (addr);
- *addr = (FPW) 0x00500050;/* clear status register */
- *addr = (FPW) 0x00FF00FF;/* resest to read mode */
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-static void flash_get_offsets (ulong base, flash_info_t * info)
-{
- int i;
- volatile int r; /* gcc 3.4.0-1 strangeness, need to follow up.*/
-
- if (info->flash_id == FLASH_UNKNOWN) {
- return;
- }
-
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
- for (i = 0; i < info->sector_count; i++) {
- if (i > 254) { /* 255,256,257,258 */
- r=i;
- info->start[i] = base + (((r-(int)255) * SZ_32K) + (255*PHYS_FLASH_SECT_SIZE));
- info->protect[i] = 0;
- } else {
- info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
- info->protect[i] = 0;
- }
- }
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-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_28F256L18T:
- printf ("FLASH 28F256L18T\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;
- /* mb(); this one makes ARM11 err go away, but I want it :) as a guide to problems */
-
- /* Write auto select command: read Manufacturer ID */
- addr[0x5555] = (FPW) 0x00AA00AA;
- addr[0x2AAA] = (FPW) 0x00550055;
- addr[0x5555] = (FPW) 0x00900090;
-
- mb ();
- value = addr[0] & 0xFF; /* just looking for 89 (8989 is hw pat)*/
-
- 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_28F256L18T): /* 880D */
- info->flash_id += FLASH_28F256L18T;
- info->sector_count = 259; /*0-258*/
- info->size = SZ_32M;
- break; /* => 32 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);
-}
-
-
-/* unprotects a sector for write and erase
- * on some intel parts, this unprotects the entire chip, but it
- * wont hurt to call this additional times per sector...
- */
-void flash_unprotect_sectors (FPWV * addr)
-{
-#define PD_FINTEL_WSMS_READY_MASK 0x0080
-
- *addr = (FPW) 0x00500050; /* clear status register */
-
- /* this sends the clear lock bit command */
- *addr = (FPW) 0x00600060;
- *addr = (FPW) 0x00D000D0;
-}
-
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
- int prot, sect;
- ulong type, start, last;
- int rcode = 0;
-#ifdef CONFIG_USE_IRQ
- int iflag;
-#endif
-
- 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;
-
-#ifdef CONFIG_USE_IRQ
- /* Disable interrupts which might cause a timeout here */
- iflag = disable_interrupts ();
-#endif
-
- /* 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);
-
- flash_unprotect_sectors (addr);
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked ();
-
- *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_masked () >
- CFG_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- /* suspend erase */
- *addr = (FPW) 0x00B000B0;
- /* reset to read mode */
- *addr = (FPW) 0x00FF00FF;
- rcode = 1;
- break;
- }
- }
-
- /* clear status register cmd. */
- *addr = (FPW) 0x00500050;
- *addr = (FPW) 0x00FF00FF;/* resest to read mode */
- printf (" done\n");
- }
- }
-#ifdef CONFIG_USE_IRQ
- if (iflag)
- enable_interrupts();
-#endif
-
- 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;
-#ifdef CONFIG_USE_IRQ
- int iflag;
-#endif
-
- /* Check if Flash is (sufficiently) erased */
- if ((*addr & data) != data) {
- printf ("not erased at %08lx (%x)\n", (ulong) addr, *addr);
- return(2);
- }
- /* Disable interrupts which might cause a timeout here */
-#ifdef CONFIG_USE_IRQ
- iflag = disable_interrupts ();
-#endif
- *addr = (FPW) 0x00400040; /* write setup */
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked ();
-
- /* wait while polling the status register */
- while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
- if (get_timer_masked () > CFG_FLASH_WRITE_TOUT) {
- *addr = (FPW) 0x00FF00FF; /* restore read mode */
- return(1);
- }
- }
- *addr = (FPW) 0x00FF00FF; /* restore read mode */
-
-#ifdef CONFIG_USE_IRQ
- if (iflag)
- enable_interrupts();
-#endif
-
- return(0);
-}
-
-void inline spin_wheel (void)
-{
- static int p = 0;
- static char w[] = "\\/-";
-
- printf ("\010%c", w[p]);
- (++p == 3) ? (p = 0) : 0;
-}
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