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-rw-r--r--board/bmw/flash.c779
1 files changed, 0 insertions, 779 deletions
diff --git a/board/bmw/flash.c b/board/bmw/flash.c
deleted file mode 100644
index 57ffe0890..000000000
--- a/board/bmw/flash.c
+++ /dev/null
@@ -1,779 +0,0 @@
-/*
- * (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 <asm/pci_io.h>
-
-#define ROM_CS0_START 0xFF800000
-#define ROM_CS1_START 0xFF000000
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-#if defined(CONFIG_ENV_IS_IN_FLASH)
-# ifndef CONFIG_ENV_ADDR
-# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
-# endif
-# ifndef CONFIG_ENV_SIZE
-# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
-# endif
-# ifndef CONFIG_ENV_SECT_SIZE
-# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
-# endif
-#endif
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static int write_word (flash_info_t * info, ulong dest, ulong data);
-
-#if 0
-static void flash_get_offsets (ulong base, flash_info_t * info);
-#endif /* 0 */
-
-/*flash command address offsets*/
-
-#if 0
-#define ADDR0 (0x555)
-#define ADDR1 (0x2AA)
-#define ADDR3 (0x001)
-#else
-#define ADDR0 (0xAAA)
-#define ADDR1 (0x555)
-#define ADDR3 (0x001)
-#endif
-
-#define FLASH_WORD_SIZE unsigned char
-
-/*-----------------------------------------------------------------------
- */
-
-#if 0
-static int byte_parity_odd (unsigned char x) __attribute__ ((const));
-#endif /* 0 */
-static unsigned long flash_id (unsigned char mfct, unsigned char chip)
- __attribute__ ((const));
-
-typedef struct {
- FLASH_WORD_SIZE extval;
- unsigned short intval;
-} map_entry;
-
-#if 0
-static int byte_parity_odd (unsigned char x)
-{
- x ^= x >> 4;
- x ^= x >> 2;
- x ^= x >> 1;
- return (x & 0x1) != 0;
-}
-#endif /* 0 */
-
-
-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},
- {(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[] = CONFIG_SYS_FLASH_BANKS;
-
- /* Init: no FLASHes known */
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
- flash_info_t *const pflinfo = &flash_info[i];
-
- pflinfo->flash_id = FLASH_UNKNOWN;
- pflinfo->size = 0;
- pflinfo->sector_count = 0;
- }
-
- 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;
-#if 0
- volatile FLASH_WORD_SIZE *addr2;
-#endif
-#if 0
- /* write autoselect sequence */
- flash[0x5555] = 0xaa;
- flash[0x2aaa] = 0x55;
- flash[0x5555] = 0x90;
-#else
- flash[0xAAA << (3 * i)] = 0xaa;
- flash[0x555 << (3 * i)] = 0x55;
- flash[0xAAA << (3 * i)] = 0x90;
-#endif
- __asm__ __volatile__ ("sync");
-
-#if 0
- pflinfo->flash_id = flash_id (flash[0x0], flash[0x1]);
-#else
- pflinfo->flash_id =
- flash_id (flash[0x0], flash[0x2 + 14 * i]);
-#endif
-
- switch (pflinfo->flash_id & FLASH_TYPEMASK) {
- 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;
- }
-#if 0
- /* check for protected sectors */
- for (j = 0; j < pflinfo->sector_count; j++) {
- /* read sector protection at sector address, (A7 .. A0) = 0x02 */
- /* D0 = 1 if protected */
- addr2 = (volatile FLASH_WORD_SIZE
- *) (pflinfo->start[j]);
- if (pflinfo->flash_id & FLASH_MAN_SST)
- pflinfo->protect[j] = 0;
- else
- pflinfo->protect[j] = addr2[2] & 1;
- }
-#endif
- break;
- }
- /* Protect monitor and environment sectors
- */
-#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_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)
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_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;
-}
-
-#if 0
-static void flash_get_offsets (ulong base, flash_info_t * info)
-{
- int i;
-
- /* set up sector start address table */
- if (info->flash_id & FLASH_MAN_SST) {
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- } else if (info->flash_id & FLASH_BTYPE) {
- /* set sector offsets for bottom boot block type */
- info->start[0] = base + 0x00000000;
- info->start[1] = base + 0x00004000;
- info->start[2] = base + 0x00006000;
- info->start[3] = base + 0x00008000;
- for (i = 4; i < info->sector_count; i++) {
- info->start[i] = base + (i * 0x00010000) - 0x00030000;
- }
- } else {
- /* set sector offsets for top boot block type */
- i = info->sector_count - 1;
- info->start[i--] = base + info->size - 0x00004000;
- info->start[i--] = base + info->size - 0x00006000;
- info->start[i--] = base + info->size - 0x00008000;
- for (; i >= 0; i--) {
- info->start[i] = base + i * 0x00010000;
- }
- }
-
-}
-#endif /* 0 */
-
-/*-----------------------------------------------------------------------
- */
-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_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_AM040:
- type = "AM29F040B (512K * 8, uniform sector size)";
- 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;
-}
-
-#if 0
-
-/*
- * The following code cannot be run from FLASH!
- */
-ulong flash_get_size (vu_long * addr, flash_info_t * info)
-{
- short i;
- FLASH_WORD_SIZE value;
- ulong base = (ulong) addr;
- volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) addr;
-
- printf ("flash_get_size: \n");
- /* Write auto select command: read Manufacturer ID */
- eieio ();
- addr2[ADDR0] = (FLASH_WORD_SIZE) 0xAA;
- addr2[ADDR1] = (FLASH_WORD_SIZE) 0x55;
- addr2[ADDR0] = (FLASH_WORD_SIZE) 0x90;
- value = addr2[0];
-
- switch (value) {
- case (FLASH_WORD_SIZE) AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
- case (FLASH_WORD_SIZE) FUJ_MANUFACT:
- info->flash_id = FLASH_MAN_FUJ;
- break;
- case (FLASH_WORD_SIZE) SST_MANUFACT:
- info->flash_id = FLASH_MAN_SST;
- break;
- default:
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- return (0); /* no or unknown flash */
- }
- printf ("recognised manufacturer");
-
- value = addr2[ADDR3]; /* device ID */
- debug ("\ndev_code=%x\n", value);
-
- switch (value) {
- case (FLASH_WORD_SIZE) AMD_ID_LV400T:
- info->flash_id += FLASH_AM400T;
- info->sector_count = 11;
- info->size = 0x00080000;
- break; /* => 0.5 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV400B:
- info->flash_id += FLASH_AM400B;
- info->sector_count = 11;
- info->size = 0x00080000;
- break; /* => 0.5 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV800T:
- info->flash_id += FLASH_AM800T;
- info->sector_count = 19;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV800B:
- info->flash_id += FLASH_AM800B;
- info->sector_count = 19;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV160T:
- info->flash_id += FLASH_AM160T;
- info->sector_count = 35;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV160B:
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case (FLASH_WORD_SIZE) SST_ID_xF800A:
- info->flash_id += FLASH_SST800A;
- info->sector_count = 16;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (FLASH_WORD_SIZE) SST_ID_xF160A:
- info->flash_id += FLASH_SST160A;
- info->sector_count = 32;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_F040B:
- info->flash_id += FLASH_AM040;
- info->sector_count = 8;
- info->size = 0x00080000;
- break; /* => 0.5 MB */
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- return (0); /* => no or unknown flash */
-
- }
-
- printf ("flash id %lx; sector count %x, size %lx\n", info->flash_id,
- info->sector_count, info->size);
- /* set up sector start address table */
- if (info->flash_id & FLASH_MAN_SST) {
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- } else if (info->flash_id & FLASH_BTYPE) {
- /* set sector offsets for bottom boot block type */
- info->start[0] = base + 0x00000000;
- info->start[1] = base + 0x00004000;
- info->start[2] = base + 0x00006000;
- info->start[3] = base + 0x00008000;
- for (i = 4; i < info->sector_count; i++) {
- info->start[i] = base + (i * 0x00010000) - 0x00030000;
- }
- } else {
- /* set sector offsets for top boot block type */
- i = info->sector_count - 1;
- info->start[i--] = base + info->size - 0x00004000;
- info->start[i--] = base + info->size - 0x00006000;
- info->start[i--] = base + info->size - 0x00008000;
- for (; i >= 0; i--) {
- info->start[i] = base + i * 0x00010000;
- }
- }
-
- /* 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 */
- addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]);
- if (info->flash_id & FLASH_MAN_SST)
- info->protect[i] = 0;
- else
- info->protect[i] = addr2[2] & 1;
- }
-
- /*
- * Prevent writes to uninitialized FLASH.
- */
- if (info->flash_id != FLASH_UNKNOWN) {
- addr2 = (FLASH_WORD_SIZE *) info->start[0];
- *addr2 = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
- }
-
- return (info->size);
-}
-
-#endif
-
-
-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)) > 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 */
- 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) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- return (1);
- }
- }
- }
-
- return (0);
-}
-
-/*-----------------------------------------------------------------------
- */
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 22:42:38 +0000