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-rw-r--r--board/barco/flash.c611
1 files changed, 611 insertions, 0 deletions
diff --git a/board/barco/flash.c b/board/barco/flash.c
new file mode 100644
index 0000000000..6cb19b7b07
--- /dev/null
+++ b/board/barco/flash.c
@@ -0,0 +1,611 @@
+/********************************************************************
+ *
+ * Unless otherwise specified, Copyright (C) 2004-2005 Barco Control Rooms
+ *
+ * $Source: /home/services/cvs/firmware/ppc/u-boot-1.1.2/board/barco/flash.c,v $
+ * $Revision: 1.3 $
+ * $Author: mleeman $
+ * $Date: 2005/02/21 12:48:58 $
+ *
+ * Last ChangeLog Entry
+ * $Log: flash.c,v $
+ * Revision 1.3 2005/02/21 12:48:58 mleeman
+ * update of copyright years (feedback wd)
+ *
+ * Revision 1.2 2005/02/21 11:04:04 mleeman
+ * remove dead code and Coding style (feedback wd)
+ *
+ * Revision 1.1 2005/02/14 09:23:46 mleeman
+ * - moved 'barcohydra' directory to a more generic barco; since we will be
+ * supporting and adding multiple boards
+ *
+ * Revision 1.2 2005/02/09 12:56:23 mleeman
+ * add generic header to track changes in sources
+ *
+ *
+ *******************************************************************/
+
+/*
+ * (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 <mpc824x.h>
+#include <asm/processor.h>
+#include <flash.h>
+
+#define ROM_CS0_START 0xFF800000
+#define ROM_CS1_START 0xFF000000
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+#if defined(CFG_ENV_IS_IN_FLASH)
+# ifndef CFG_ENV_ADDR
+# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
+# endif
+# ifndef CFG_ENV_SIZE
+# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
+# endif
+# ifndef CFG_ENV_SECT_SIZE
+# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
+# endif
+#endif
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static int write_word (flash_info_t *info, ulong dest, ulong data);
+
+/*flash command address offsets*/
+
+#define ADDR0 (0xAAA)
+#define ADDR1 (0x555)
+#define ADDR3 (0x001)
+
+#define FLASH_WORD_SIZE unsigned char
+
+/*-----------------------------------------------------------------------
+ */
+
+static unsigned long flash_id(unsigned char mfct, unsigned char chip) __attribute__ ((const));
+
+typedef struct{
+ FLASH_WORD_SIZE extval;
+ unsigned short intval;
+} map_entry;
+
+static unsigned long flash_id(unsigned char mfct, unsigned char chip)
+{
+ static const map_entry mfct_map[] = {
+ {(FLASH_WORD_SIZE) AMD_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_AMD >> 16)},
+ {(FLASH_WORD_SIZE) FUJ_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_FUJ >> 16)},
+ {(FLASH_WORD_SIZE) STM_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_STM >> 16)},
+ {(FLASH_WORD_SIZE) MT_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_MT >> 16)},
+ {(FLASH_WORD_SIZE) INTEL_MANUFACT,(unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)},
+ {(FLASH_WORD_SIZE) INTEL_ALT_MANU,(unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)}
+ };
+
+ static const map_entry chip_map[] = {
+ {AMD_ID_F040B, FLASH_AM040},
+ {AMD_ID_F033C, FLASH_AM033},
+ {AMD_ID_F065D, FLASH_AM065},
+ {ATM_ID_LV040, FLASH_AT040},
+ {(FLASH_WORD_SIZE) STM_ID_x800AB, FLASH_STM800AB}
+ };
+
+ const map_entry *p;
+ unsigned long result = FLASH_UNKNOWN;
+
+ /* find chip id */
+ for(p = &chip_map[0]; p < &chip_map[sizeof chip_map / sizeof chip_map[0]]; p++){
+ if(p->extval == chip){
+ result = FLASH_VENDMASK | p->intval;
+ break;
+ }
+ }
+
+ /* find vendor id */
+ for(p = &mfct_map[0]; p < &mfct_map[sizeof mfct_map / sizeof mfct_map[0]]; p++){
+ if(p->extval == mfct){
+ result &= ~FLASH_VENDMASK;
+ result |= (unsigned long) p->intval << 16;
+ break;
+ }
+ }
+
+ return result;
+}
+
+
+unsigned long flash_init(void)
+{
+ unsigned long i;
+ unsigned char j;
+ static const ulong flash_banks[] = CFG_FLASH_BANKS;
+
+ /* Init: no FLASHes known */
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++){
+ flash_info_t * const pflinfo = &flash_info[i];
+ pflinfo->flash_id = FLASH_UNKNOWN;
+ pflinfo->size = 0;
+ pflinfo->sector_count = 0;
+ }
+
+ /* Enable writes to Hydra/Argus flash */
+ {
+ register unsigned int temp;
+ CONFIG_READ_WORD(PICR1,temp);
+ temp |= PICR1_FLASH_WR_EN;
+ CONFIG_WRITE_WORD(PICR1,temp);
+ }
+
+ for(i = 0; i < sizeof flash_banks / sizeof flash_banks[0]; i++){
+ flash_info_t * const pflinfo = &flash_info[i];
+ const unsigned long base_address = flash_banks[i];
+ volatile FLASH_WORD_SIZE * const flash = (FLASH_WORD_SIZE *) base_address;
+
+ /* write autoselect sequence */
+ flash[0x5555] = 0xaa;
+ flash[0x2aaa] = 0x55;
+ flash[0x5555] = 0x90;
+ __asm__ __volatile__("sync");
+
+ pflinfo->flash_id = flash_id(flash[0x0], flash[0x1]);
+
+ switch(pflinfo->flash_id & FLASH_TYPEMASK){
+ case FLASH_AM033:
+ pflinfo->size = 0x00200000;
+ pflinfo->sector_count = 64;
+ for(j = 0; j < 64; j++){
+ pflinfo->start[j] = base_address + 0x00010000 * j;
+ pflinfo->protect[j] = flash[(j << 16) | 0x2];
+ }
+ break;
+ case FLASH_AM065:
+ pflinfo->size = 0x00800000;
+ pflinfo->sector_count =128;
+ for(j = 0; j < 128; j++){
+ pflinfo->start[j] = base_address + 0x00010000 * j;
+ pflinfo->protect[j] = flash[(j << 16) | 0x2];
+ }
+ break;
+ case FLASH_AT040:
+ pflinfo->size = 0x00080000;
+ pflinfo->sector_count = 2;
+ pflinfo->start[0] = base_address ;
+ pflinfo->start[1] = base_address + 0x00004000;
+ pflinfo->protect[0] = ((flash[0x02] & 0X01)==0) ? 0X02 : 0X01;
+ pflinfo->protect[1] = 0X02;
+ break;
+ case FLASH_AM040:
+ pflinfo->size = 0x00080000;
+ pflinfo->sector_count = 8;
+ for(j = 0; j < 8; j++){
+ pflinfo->start[j] = base_address + 0x00010000 * j;
+ pflinfo->protect[j] = flash[(j << 16) | 0x2];
+ }
+ break;
+ case FLASH_STM800AB:
+ pflinfo->size = 0x00100000;
+ pflinfo->sector_count = 19;
+ pflinfo->start[0] = base_address;
+ pflinfo->start[1] = base_address + 0x4000;
+ pflinfo->start[2] = base_address + 0x6000;
+ pflinfo->start[3] = base_address + 0x8000;
+ for(j = 1; j < 16; j++){
+ pflinfo->start[j+3] = base_address + 0x00010000 * j;
+ }
+ break;
+ }
+ /* Protect monitor and environment sectors */
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_MONITOR_BASE,
+ CFG_MONITOR_BASE + monitor_flash_len - 1,
+ &flash_info[0]);
+#endif
+
+#if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR)
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+ &flash_info[0]);
+#endif
+
+ /* reset device to read mode */
+ flash[0x0000] = 0xf0;
+ __asm__ __volatile__("sync");
+ }
+
+ return flash_info[0].size + flash_info[1].size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info(flash_info_t *info)
+{
+ static const char unk[] = "Unknown";
+ const char *mfct = unk, *type = unk;
+ unsigned int i;
+
+ if(info->flash_id != FLASH_UNKNOWN){
+ switch(info->flash_id & FLASH_VENDMASK){
+ case FLASH_MAN_ATM:
+ mfct = "Atmel";
+ break;
+ case FLASH_MAN_AMD:
+ mfct = "AMD";
+ break;
+ case FLASH_MAN_FUJ:
+ mfct = "FUJITSU";
+ break;
+ case FLASH_MAN_STM:
+ mfct = "STM";
+ break;
+ case FLASH_MAN_SST:
+ mfct = "SST";
+ break;
+ case FLASH_MAN_BM:
+ mfct = "Bright Microelectonics";
+ break;
+ case FLASH_MAN_INTEL:
+ mfct = "Intel";
+ break;
+ }
+
+ switch(info->flash_id & FLASH_TYPEMASK){
+ case FLASH_AT040:
+ type = "AT49LV040 (512K * 8, uniform sector size)";
+ break;
+ case FLASH_AM033:
+ type = "AM29F033C (4 Mbit * 8, uniform sector size)";
+ break;
+ case FLASH_AM040:
+ type = "AM29F040B (512K * 8, uniform sector size)";
+ break;
+ case FLASH_AM065:
+ type = "AM29F0465D ( 8 MBit * 8, uniform sector size) or part of AM29F652D( 16 MB)";
+ break;
+ case FLASH_AM400B:
+ type = "AM29LV400B (4 Mbit, bottom boot sect)";
+ break;
+ case FLASH_AM400T:
+ type = "AM29LV400T (4 Mbit, top boot sector)";
+ break;
+ case FLASH_AM800B:
+ type = "AM29LV800B (8 Mbit, bottom boot sect)";
+ break;
+ case FLASH_AM800T:
+ type = "AM29LV800T (8 Mbit, top boot sector)";
+ break;
+ case FLASH_AM160T:
+ type = "AM29LV160T (16 Mbit, top boot sector)";
+ break;
+ case FLASH_AM320B:
+ type = "AM29LV320B (32 Mbit, bottom boot sect)";
+ break;
+ case FLASH_AM320T:
+ type = "AM29LV320T (32 Mbit, top boot sector)";
+ break;
+ case FLASH_STM800AB:
+ type = "M29W800AB (8 Mbit, bottom boot sect)";
+ break;
+ case FLASH_SST800A:
+ type = "SST39LF/VF800 (8 Mbit, uniform sector size)";
+ break;
+ case FLASH_SST160A:
+ type = "SST39LF/VF160 (16 Mbit, uniform sector size)";
+ break;
+ }
+ }
+
+ printf(
+ "\n Brand: %s Type: %s\n"
+ " Size: %lu KB in %d Sectors\n",
+ mfct,
+ type,
+ info->size >> 10,
+ info->sector_count
+ );
+
+ printf (" Sector Start Addresses:");
+
+ for (i = 0; i < info->sector_count; i++){
+ unsigned long size;
+ unsigned int erased;
+ unsigned long * flash = (unsigned long *) info->start[i];
+
+ /*
+ * Check if whole sector is erased
+ */
+ size =
+ (i != (info->sector_count - 1)) ?
+ (info->start[i + 1] - info->start[i]) >> 2 :
+ (info->start[0] + info->size - info->start[i]) >> 2;
+
+ for(
+ flash = (unsigned long *) info->start[i], erased = 1;
+ (flash != (unsigned long *) info->start[i] + size) && erased;
+ flash++
+ ){
+ erased = *flash == ~0x0UL;
+ }
+
+ printf(
+ "%s %08lX %s %s",
+ (i % 5) ? "" : "\n ",
+ info->start[i],
+ erased ? "E" : " ",
+ info->protect[i] ? "RO" : " "
+ );
+ }
+
+ puts("\n");
+ return;
+}
+
+int flash_erase(flash_info_t *info, int s_first, int s_last)
+{
+ volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
+ int flag, prot, sect, l_sect;
+ ulong start, now, last;
+ unsigned char sh8b;
+
+ 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_MAN_STM | 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;
+
+ /* Check the ROM CS */
+ if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START)){
+ sh8b = 3;
+ }
+ else{
+ sh8b = 0;
+ }
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080;
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ addr = (FLASH_WORD_SIZE *)(info->start[0] + (
+ (info->start[sect] - info->start[0]) << sh8b));
+ if (info->flash_id & FLASH_MAN_SST){
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080;
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
+ addr[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */
+ udelay(30000); /* wait 30 ms */
+ }
+ else
+ addr[0] = (FLASH_WORD_SIZE)0x00300030; /* sector erase */
+ 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 = (FLASH_WORD_SIZE *)(info->start[0] + (
+ (info->start[l_sect] - info->start[0]) << sh8b));
+ while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) {
+ if ((now = get_timer(start)) > CFG_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 */
+ addr = (FLASH_WORD_SIZE *)info->start[0];
+ addr[0] = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
+
+ 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)
+{
+ volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)info->start[0];
+ volatile FLASH_WORD_SIZE *dest2;
+ volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data;
+ ulong start;
+ int flag;
+ int i;
+ unsigned char sh8b;
+
+ /* Check the ROM CS */
+ if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START)){
+ sh8b = 3;
+ }
+ else{
+ sh8b = 0;
+ }
+
+ dest2 = (FLASH_WORD_SIZE *)(((dest - info->start[0]) << sh8b) +
+ info->start[0]);
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*dest2 & (FLASH_WORD_SIZE)data) != (FLASH_WORD_SIZE)data) {
+ return (2);
+ }
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ for (i=0; i<4/sizeof(FLASH_WORD_SIZE); i++){
+ addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
+ addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
+ addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00A000A0;
+
+ dest2[i << sh8b] = data2[i];
+
+ /* re-enable interrupts if necessary */
+ if (flag){
+ enable_interrupts();
+ }
+
+ /* data polling for D7 */
+ start = get_timer (0);
+ while ((dest2[i << sh8b] & (FLASH_WORD_SIZE)0x00800080) !=
+ (data2[i] & (FLASH_WORD_SIZE)0x00800080)) {
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+ return (1);
+ }
+ }
+ }
+
+ return (0);
+}
+
+/*----------------------------------------------------------------------- */
generated by cgit (git 2.34.1) at 2024-12-28 08:03:10 +0000