+++ /dev/null
-/*
- * (C) Copyright 2000
- * 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 <mpc8xx.h>
-
-flash_info_t flash_info[CONFIG_SYS_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);
-static void flash_get_offsets (ulong base, flash_info_t *info);
-
-/*-----------------------------------------------------------------------
- * Protection Flags:
- */
-#define FLAG_PROTECT_SET 0x01
-#define FLAG_PROTECT_CLEAR 0x02
-
-/*-----------------------------------------------------------------------
- */
-
-unsigned long flash_init (void)
-{
- volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
- volatile memctl8xx_t *memctl = &immap->im_memctl;
- unsigned long size_b0, size_b1;
- int i;
-
- /*printf("faking");*/
-
- return(0x1fffff);
-
- /* 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 - FIXME XXX */
-
- size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
-
- if (flash_info[0].flash_id == FLASH_UNKNOWN)
- {
- printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
- size_b0, size_b0<<20);
- }
-
-#if 0
- if (FLASH_BASE1_PRELIM != 0x0) {
- size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
-
- if (size_b1 > size_b0) {
- printf ("## ERROR: Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
- size_b1, size_b1<<20,size_b0, size_b0<<20);
-
- flash_info[0].flash_id = FLASH_UNKNOWN;
- flash_info[1].flash_id = FLASH_UNKNOWN;
- flash_info[0].sector_count = -1;
- flash_info[1].sector_count = -1;
- flash_info[0].size = 0;
- flash_info[1].size = 0;
- return (0);
- }
- } else {
-#endif
- size_b1 = 0;
-
- /* Remap FLASH according to real size */
- memctl->memc_or0 = CONFIG_SYS_OR0_PRELIM;
- memctl->memc_br0 = CONFIG_SYS_BR0_PRELIM;
-
- /* Re-do sizing to get full correct info */
- size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]);
-
- flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
-
-#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
- /* monitor protection ON by default */
- (void)flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_MONITOR_BASE,
- CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
- &flash_info[0]);
-#endif
-
- if (size_b1)
- {
- /* memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;
- memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM; */
-
- /* Re-do sizing to get full correct info */
- size_b1 = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE + size_b0),
- &flash_info[1]);
-
- flash_get_offsets (CONFIG_SYS_FLASH_BASE + size_b0, &flash_info[1]);
-
-#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
- /* monitor protection ON by default */
- (void)flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_MONITOR_BASE,
- CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
- &flash_info[1]);
-#endif
- }
- else
- {
-/* memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;
- FIXME memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM; */
-
- flash_info[1].flash_id = FLASH_UNKNOWN;
- flash_info[1].sector_count = -1;
- }
-
- flash_info[0].size = size_b0;
- flash_info[1].size = size_b1;
-
- return (size_b0 + size_b1);
-}
-
-
-static void flash_get_offsets (ulong base, flash_info_t *info)
-{
- int i;
-
- /* set up sector start adress table */
- if (info->flash_id & FLASH_BTYPE)
- {
- /* set sector offsets for bottom boot block type */
- for (i = 0; i < info->sector_count; i++)
- {
- info->start[i] = base + (i * 0x00040000);
- }
- }
- else
- {
- /* set sector offsets for top boot block type */
- i = info->sector_count - 1;
- for (; i >= 0; i--)
- {
- info->start[i] = base + i * 0x00040000;
- }
- }
-
-}
-
-/*-----------------------------------------------------------------------
- */
-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) {
-
-#if 0
- case FLASH_AM040B:
- printf ("AM29F040B (4 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM040T:
- printf ("AM29F040T (4 Mbit, top boot sect)\n");
- break;
-#endif
- 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;
- 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 (vu_long *addr, flash_info_t *info)
-{
- short i;
-#if 0
- ulong base = (ulong)addr;
-#endif
- ulong value;
-
- /* Write auto select command: read Manufacturer ID */
-#if 0
- addr[0x0555] = 0x00AA00AA;
- addr[0x02AA] = 0x00550055;
- addr[0x0555] = 0x00900090;
-#else
- addr[0x0555] = 0xAAAAAAAA;
- addr[0x02AA] = 0x55555555;
- addr[0x0555] = 0x90909090;
-#endif
-
- value = addr[0];
-
- switch (value)
- {
- 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;
- break;
- }
-
- value = addr[1]; /* device ID */
-
- switch (value)
- {
-#if 0
- case AMD_ID_F040B:
- info->flash_id += FLASH_AM040B;
- info->sector_count = 8;
- info->size = 0x00200000;
- break; /* => 2 MB */
-#endif
- case AMD_ID_LV400T:
- info->flash_id += FLASH_AM400T;
- info->sector_count = 11;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case AMD_ID_LV400B:
- info->flash_id += FLASH_AM400B;
- info->sector_count = 11;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case AMD_ID_LV800T:
- info->flash_id += FLASH_AM800T;
- info->sector_count = 19;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case AMD_ID_LV800B:
- info->flash_id += FLASH_AM800B;
- info->sector_count = 19;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case AMD_ID_LV160T:
- info->flash_id += FLASH_AM160T;
- info->sector_count = 35;
- info->size = 0x00400000;
- break; /* => 4 MB */
-
- case AMD_ID_LV160B:
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00400000;
- break; /* => 4 MB */
-#if 0 /* enable when device IDs are available */
- case AMD_ID_LV320T:
- info->flash_id += FLASH_AM320T;
- info->sector_count = 67;
- info->size = 0x00800000;
- break; /* => 8 MB */
-
- case AMD_ID_LV320B:
- info->flash_id += FLASH_AM320B;
- info->sector_count = 67;
- info->size = 0x00800000;
- break; /* => 8 MB */
-#endif
- default:
- info->flash_id = FLASH_UNKNOWN;
- return (0); /* => no or unknown flash */
-
- }
-
-#if 0
- /* set up sector start adress table */
- if (info->flash_id & FLASH_BTYPE) {
- /* set sector offsets for bottom boot block type */
- info->start[0] = base + 0x00000000;
- info->start[1] = base + 0x00008000;
- info->start[2] = base + 0x0000C000;
- info->start[3] = base + 0x00010000;
- for (i = 4; i < info->sector_count; i++) {
- info->start[i] = base + (i * 0x00020000) - 0x00060000;
- }
- } else {
- /* set sector offsets for top boot block type */
- i = info->sector_count - 1;
- info->start[i--] = base + info->size - 0x00008000;
- info->start[i--] = base + info->size - 0x0000C000;
- info->start[i--] = base + info->size - 0x00010000;
- for (; i >= 0; i--) {
- info->start[i] = base + i * 0x00020000;
- }
- }
-#else
- flash_get_offsets ((ulong)addr, &flash_info[0]);
-#endif
-
- /* 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 */
- addr = (volatile unsigned long *)(info->start[i]);
- info->protect[i] = addr[2] & 1;
- }
-
- /*
- * Prevent writes to uninitialized FLASH.
- */
- if (info->flash_id != FLASH_UNKNOWN)
- {
- addr = (volatile unsigned long *)info->start[0];
-#if 0
- *addr = 0x00F000F0; /* reset bank */
-#else
- *addr = 0xF0F0F0F0; /* reset bank */
-#endif
- }
-
- return (info->size);
-}
-
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- vu_long *addr = (vu_long*)(info->start[0]);
- 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;
- }
-
- if ((info->flash_id == FLASH_UNKNOWN) ||
- (info->flash_id > FLASH_AMD_COMP)) {
- 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();
-
-#if 0
- addr[0x0555] = 0x00AA00AA;
- addr[0x02AA] = 0x00550055;
- addr[0x0555] = 0x00800080;
- addr[0x0555] = 0x00AA00AA;
- addr[0x02AA] = 0x00550055;
-#else
- addr[0x0555] = 0xAAAAAAAA;
- addr[0x02AA] = 0x55555555;
- addr[0x0555] = 0x80808080;
- addr[0x0555] = 0xAAAAAAAA;
- addr[0x02AA] = 0x55555555;
-#endif
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- addr = (vu_long*)(info->start[sect]);
-#if 0
- addr[0] = 0x00300030;
-#else
- addr[0] = 0x30303030;
-#endif
- 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;
- addr = (vu_long*)(info->start[l_sect]);
-#if 0
- while ((addr[0] & 0x00800080) != 0x00800080)
-#else
- while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
-#endif
- {
- 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 */
- putc ('.');
- last = now;
- }
- }
-
-DONE:
- /* reset to read mode */
- addr = (volatile unsigned long *)info->start[0];
-#if 0
- addr[0] = 0x00F000F0; /* reset bank */
-#else
- addr[0] = 0xF0F0F0F0; /* reset bank */
-#endif
-
- printf (" done\n");
- return 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;
-
- wp = (addr & ~3); /* 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);
- }
- for (; i<4 && cnt>0; ++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;
- 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);
- }
-
- return (write_word(info, wp, data));
-}
-/*-----------------------------------------------------------------------
- * Write a word to Flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int write_word (flash_info_t *info, ulong dest, ulong data)
-{
- vu_long *addr = (vu_long*)(info->start[0]);
- ulong start;
- int flag;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*((vu_long *)dest) & data) != data) {
- return (2);
- }
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
-#if 0
- addr[0x0555] = 0x00AA00AA;
- addr[0x02AA] = 0x00550055;
- addr[0x0555] = 0x00A000A0;
-#else
- addr[0x0555] = 0xAAAAAAAA;
- addr[0x02AA] = 0x55555555;
- addr[0x0555] = 0xA0A0A0A0;
-#endif
-
- *((vu_long *)dest) = data;
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- /* data polling for D7 */
- start = get_timer (0);
-#if 0
- while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080))
-#else
- while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080))
-#endif
- {
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- return (1);
- }
- }
- return (0);
-}
-
-/*-----------------------------------------------------------------------
- */
projects / people / ms / u-boot.git / blobdiff