+++ /dev/null
-/*
- * (C) Copyright 2001, 2002
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * Flash Routines for AMD devices on the TQM8260 board
- *
- *--------------------------------------------------------------------
- * 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 <mpc8xx.h>
-
-#define V_ULONG(a) (*(volatile unsigned long *)( a ))
-#define V_BYTE(a) (*(volatile unsigned char *)( a ))
-
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-
-/*-----------------------------------------------------------------------
- */
-void flash_reset (void)
-{
- if (flash_info[0].flash_id != FLASH_UNKNOWN) {
- V_ULONG (flash_info[0].start[0]) = 0x00F000F0;
- V_ULONG (flash_info[0].start[0] + 4) = 0x00F000F0;
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-ulong flash_get_size (ulong baseaddr, flash_info_t * info)
-{
- short i;
- unsigned long flashtest_h, flashtest_l;
-
- /* Write auto select command sequence and test FLASH answer */
- V_ULONG (baseaddr + ((ulong) 0x0555 << 3)) = 0x00AA00AA;
- V_ULONG (baseaddr + ((ulong) 0x02AA << 3)) = 0x00550055;
- V_ULONG (baseaddr + ((ulong) 0x0555 << 3)) = 0x00900090;
- V_ULONG (baseaddr + 4 + ((ulong) 0x0555 << 3)) = 0x00AA00AA;
- V_ULONG (baseaddr + 4 + ((ulong) 0x02AA << 3)) = 0x00550055;
- V_ULONG (baseaddr + 4 + ((ulong) 0x0555 << 3)) = 0x00900090;
-
- flashtest_h = V_ULONG (baseaddr); /* manufacturer ID */
- flashtest_l = V_ULONG (baseaddr + 4);
-
- switch ((int) flashtest_h) {
- case AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
- case FUJ_MANUFACT:
- info->flash_id = FLASH_MAN_FUJ;
- break;
- default:
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- return (0); /* no or unknown flash */
- }
-
- flashtest_h = V_ULONG (baseaddr + 8); /* device ID */
- flashtest_l = V_ULONG (baseaddr + 12);
- if (flashtest_h != flashtest_l) {
- info->flash_id = FLASH_UNKNOWN;
- } else {
- switch (flashtest_h) {
- case AMD_ID_LV800T:
- info->flash_id += FLASH_AM800T;
- info->sector_count = 19;
- info->size = 0x00400000;
- break; /* 4 * 1 MB = 4 MB */
- case AMD_ID_LV800B:
- info->flash_id += FLASH_AM800B;
- info->sector_count = 19;
- info->size = 0x00400000;
- break; /* 4 * 1 MB = 4 MB */
- case AMD_ID_LV160T:
- info->flash_id += FLASH_AM160T;
- info->sector_count = 35;
- info->size = 0x00800000;
- break; /* 4 * 2 MB = 8 MB */
- case AMD_ID_LV160B:
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00800000;
- break; /* 4 * 2 MB = 8 MB */
- case AMD_ID_DL322T:
- info->flash_id += FLASH_AMDL322T;
- info->sector_count = 71;
- info->size = 0x01000000;
- break; /* 4 * 4 MB = 16 MB */
- case AMD_ID_DL322B:
- info->flash_id += FLASH_AMDL322B;
- info->sector_count = 71;
- info->size = 0x01000000;
- break; /* 4 * 4 MB = 16 MB */
- case AMD_ID_DL323T:
- info->flash_id += FLASH_AMDL323T;
- info->sector_count = 71;
- info->size = 0x01000000;
- break; /* 4 * 4 MB = 16 MB */
- case AMD_ID_DL323B:
- info->flash_id += FLASH_AMDL323B;
- info->sector_count = 71;
- info->size = 0x01000000;
- break; /* 4 * 4 MB = 16 MB */
- case AMD_ID_LV640U:
- info->flash_id += FLASH_AM640U;
- info->sector_count = 128;
- info->size = 0x02000000;
- break; /* 4 * 8 MB = 32 MB */
- default:
- info->flash_id = FLASH_UNKNOWN;
- return (0); /* no or unknown flash */
- }
- }
-
- if (flashtest_h == AMD_ID_LV640U) {
-
- /* set up sector start adress table (uniform sector type) */
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = baseaddr + (i * 0x00040000);
-
- } else if (info->flash_id & FLASH_BTYPE) {
-
- /* set up sector start adress table (bottom sector type) */
- info->start[0] = baseaddr + 0x00000000;
- info->start[1] = baseaddr + 0x00010000;
- info->start[2] = baseaddr + 0x00018000;
- info->start[3] = baseaddr + 0x00020000;
- for (i = 4; i < info->sector_count; i++) {
- info->start[i] = baseaddr + (i * 0x00040000) - 0x000C0000;
- }
-
- } else {
-
- /* set up sector start adress table (top sector type) */
- i = info->sector_count - 1;
- info->start[i--] = baseaddr + info->size - 0x00010000;
- info->start[i--] = baseaddr + info->size - 0x00018000;
- info->start[i--] = baseaddr + info->size - 0x00020000;
- for (; i >= 0; i--) {
- info->start[i] = baseaddr + i * 0x00040000;
- }
- }
-
- /* check for protected sectors */
- for (i = 0; i < info->sector_count; i++) {
- /* read sector protection at sector address, (A7 .. A0) = 0x02 */
- if ((V_ULONG (info->start[i] + 16) & 0x00010001) ||
- (V_ULONG (info->start[i] + 20) & 0x00010001)) {
- info->protect[i] = 1; /* D0 = 1 if protected */
- } else {
- info->protect[i] = 0;
- }
- }
-
- flash_reset ();
- return (info->size);
-}
-
-/*-----------------------------------------------------------------------
- */
-unsigned long flash_init (void)
-{
- unsigned long size_b0 = 0;
- int i;
-
- /* Init: no FLASHes known */
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- }
-
- /* Static FLASH Bank configuration here (only one bank) */
-
- size_b0 = flash_get_size (CONFIG_SYS_FLASH0_BASE, &flash_info[0]);
- if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
- printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
- size_b0, size_b0 >> 20);
- }
-
- /*
- * protect monitor and environment sectors
- */
-
-#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_SYS_MONITOR_BASE,
- CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
- &flash_info[0]);
-#endif
-
-#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
-# ifndef CONFIG_ENV_SIZE
-# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
-# endif
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
- &flash_info[0]);
-#endif
-
-#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR_REDUND)
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR_REDUND,
- CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1,
- &flash_info[0]);
-#endif
-
- return (size_b0);
-}
-
-/*-----------------------------------------------------------------------
- */
-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_AMD:
- printf ("AMD ");
- break;
- case FLASH_MAN_FUJ:
- printf ("FUJITSU ");
- break;
- default:
- printf ("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM800T:
- printf ("29LV800T (8 M, top sector)\n");
- break;
- case FLASH_AM800B:
- printf ("29LV800T (8 M, bottom sector)\n");
- break;
- case FLASH_AM160T:
- printf ("29LV160T (16 M, top sector)\n");
- break;
- case FLASH_AM160B:
- printf ("29LV160B (16 M, bottom sector)\n");
- break;
- case FLASH_AMDL322T:
- printf ("29DL322T (32 M, top sector)\n");
- break;
- case FLASH_AMDL322B:
- printf ("29DL322B (32 M, bottom sector)\n");
- break;
- case FLASH_AMDL323T:
- printf ("29DL323T (32 M, top sector)\n");
- break;
- case FLASH_AMDL323B:
- printf ("29DL323B (32 M, bottom sector)\n");
- break;
- case FLASH_AM640U:
- printf ("29LV640D (64 M, uniform sector)\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;
-}
-
-/*-----------------------------------------------------------------------
- */
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
- int flag, prot, sect, l_sect;
- ulong start, now, last;
-
- 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;
- }
-
- 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 ();
-
- V_ULONG (info->start[0] + (0x0555 << 3)) = 0x00AA00AA;
- V_ULONG (info->start[0] + (0x02AA << 3)) = 0x00550055;
- V_ULONG (info->start[0] + (0x0555 << 3)) = 0x00800080;
- V_ULONG (info->start[0] + (0x0555 << 3)) = 0x00AA00AA;
- V_ULONG (info->start[0] + (0x02AA << 3)) = 0x00550055;
- V_ULONG (info->start[0] + 4 + (0x0555 << 3)) = 0x00AA00AA;
- V_ULONG (info->start[0] + 4 + (0x02AA << 3)) = 0x00550055;
- V_ULONG (info->start[0] + 4 + (0x0555 << 3)) = 0x00800080;
- V_ULONG (info->start[0] + 4 + (0x0555 << 3)) = 0x00AA00AA;
- V_ULONG (info->start[0] + 4 + (0x02AA << 3)) = 0x00550055;
- udelay (1000);
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- V_ULONG (info->start[sect]) = 0x00300030;
- V_ULONG (info->start[sect] + 4) = 0x00300030;
- l_sect = sect;
- }
- }
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
-
- /* wait at least 80us - let's wait 1 ms */
- udelay (1000);
-
- /*
- * We wait for the last triggered sector
- */
- if (l_sect < 0)
- goto DONE;
-
- start = get_timer (0);
- last = start;
- while ((V_ULONG (info->start[l_sect]) & 0x00800080) != 0x00800080 ||
- (V_ULONG (info->start[l_sect] + 4) & 0x00800080) != 0x00800080)
- {
- if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- return 1;
- }
- /* show that we're waiting */
- if ((now - last) > 1000) { /* every second */
- serial_putc ('.');
- last = now;
- }
- }
-
- DONE:
- /* reset to read mode */
- flash_reset ();
-
- printf (" done\n");
- return 0;
-}
-
-static int write_dword (flash_info_t *, ulong, unsigned char *);
-
-/*-----------------------------------------------------------------------
- * 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 dp;
- static unsigned char bb[8];
- int i, l, rc, cc = cnt;
-
- dp = (addr & ~7); /* get lower dword aligned address */
-
- /*
- * handle unaligned start bytes
- */
- if ((l = addr - dp) != 0) {
- for (i = 0; i < 8; i++)
- bb[i] = (i < l || (i - l) >= cc) ? V_BYTE (dp + i) : *src++;
- if ((rc = write_dword (info, dp, bb)) != 0) {
- return (rc);
- }
- dp += 8;
- cc -= 8 - l;
- }
-
- /*
- * handle word aligned part
- */
- while (cc >= 8) {
- if ((rc = write_dword (info, dp, src)) != 0) {
- return (rc);
- }
- dp += 8;
- src += 8;
- cc -= 8;
- }
-
- if (cc <= 0) {
- return (0);
- }
-
- /*
- * handle unaligned tail bytes
- */
- for (i = 0; i < 8; i++) {
- bb[i] = (i < cc) ? *src++ : V_BYTE (dp + i);
- }
- return (write_dword (info, dp, bb));
-}
-
-/*-----------------------------------------------------------------------
- * Write a dword to Flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int write_dword (flash_info_t * info, ulong dest, unsigned char *pdata)
-{
- ulong start, cl, ch;
- int flag, i;
-
- for (ch = 0, i = 0; i < 4; i++)
- ch = (ch << 8) + *pdata++; /* high word */
- for (cl = 0, i = 0; i < 4; i++)
- cl = (cl << 8) + *pdata++; /* low word */
-
- /* Check if Flash is (sufficiently) erased */
- if ((*((vu_long *) dest) & ch) != ch
- || (*((vu_long *) (dest + 4)) & cl) != cl) {
- return (2);
- }
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts ();
-
- V_ULONG (info->start[0] + (0x0555 << 3)) = 0x00AA00AA;
- V_ULONG (info->start[0] + (0x02AA << 3)) = 0x00550055;
- V_ULONG (info->start[0] + (0x0555 << 3)) = 0x00A000A0;
- V_ULONG (dest) = ch;
- V_ULONG (info->start[0] + 4 + (0x0555 << 3)) = 0x00AA00AA;
- V_ULONG (info->start[0] + 4 + (0x02AA << 3)) = 0x00550055;
- V_ULONG (info->start[0] + 4 + (0x0555 << 3)) = 0x00A000A0;
- V_ULONG (dest + 4) = cl;
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
-
- /* data polling for D7 */
- start = get_timer (0);
- while (((V_ULONG (dest) & 0x00800080) != (ch & 0x00800080)) ||
- ((V_ULONG (dest + 4) & 0x00800080) != (cl & 0x00800080))) {
- if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- return (1);
- }
- }
- return (0);
-}
projects / oweals / u-boot.git / commitdiff