#define ROM_CS0_START 0xFF800000
#define ROM_CS1_START 0xFF000000
-#if defined(CFG_ENV_IS_IN_FLASH)
-# ifndef CFG_ENV_ADDR
-# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
+#if defined(CONFIG_ENV_IS_IN_FLASH)
+# ifndef CONFIG_ENV_ADDR
+# define CONFIG_ENV_ADDR (CFG_FLASH_BASE + CONFIG_ENV_OFFSET)
# endif
-# ifndef CFG_ENV_SIZE
-# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
+# ifndef CONFIG_ENV_SIZE
+# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
# endif
-# ifndef CFG_ENV_SECT_SIZE
-# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
+# ifndef CONFIG_ENV_SECT_SIZE
+# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
# endif
#endif
-#define FLASH_BANK_SIZE 0x200000
-#define MAIN_SECT_SIZE 0x10000
+#define FLASH_BANK_SIZE ((uint)(16 * 1024 * 1024)) /* max 16Mbyte */
+#define MAIN_SECT_SIZE 0x10000
#define SECT_SIZE_32KB 0x8000
#define SECT_SIZE_8KB 0x2000
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
-static int write_word (flash_info_t *info, ulong dest, ulong data);
-
-static __inline__ unsigned long get_msr(void)
-{ unsigned long msr;
- __asm__ __volatile__ ("mfmsr %0" : "=r" (msr) :);
- return msr;
-}
-
-static __inline__ void set_msr(unsigned long msr)
-{
- __asm__ __volatile__ ("mtmsr %0" : : "r" (msr));
-}
+static int write_word (flash_info_t * info, ulong dest, ulong data);
+#if 0
+static void write_via_fpu (vu_long * addr, ulong * data);
+#endif
+static __inline__ unsigned long get_msr (void);
+static __inline__ void set_msr (unsigned long msr);
/*flash command address offsets*/
#define ADDR0 (0x555)
/*---------------------------------------------------------------------*/
-unsigned long flash_init(void)
+unsigned long flash_init (void)
{
- int i, j;
- ulong size = 0;
+ int i; /* flash bank counter */
+ int j; /* flash device sector counter */
+ int k; /* flash size calculation loop counter */
+ int N; /* pow(2,N) is flash size, but we don't have <math.h> */
+ ulong total_size = 0, device_size = 1;
unsigned char manuf_id, device_id;
- for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
- {
- vu_char *addr = (vu_char *)(CFG_FLASH_BASE + i * FLASH_BANK_SIZE);
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+ vu_char *addr = (vu_char *) (CFG_FLASH_BASE + i * FLASH_BANK_SIZE);
+
+ addr[0x555] = 0xAA; /* get manuf/device info command */
+ addr[0x2AA] = 0x55; /* 3-cycle command */
+ addr[0x555] = 0x90;
+
+ manuf_id = addr[0]; /* read back manuf/device info */
+ device_id = addr[1];
- addr[0x555] = 0xAA; /* 3 cycles to read device info. See */
- addr[0x2AA] = 0x55; /* AM29LV116D datasheet for list of */
- addr[0x555] = 0x90; /* available commands. */
+ addr[0x55] = 0x98; /* CFI command */
+ N = addr[0x27]; /* read back device_size = pow(2,N) */
- manuf_id = addr[0];
- device_id = addr[1];
+ for (k = 0; k < N; k++) /* calculate device_size = pow(2,N) */
+ device_size *= 2;
+
+ flash_info[i].size = device_size;
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
#if defined DEBUG_FLASH
- printf("manuf_id = %x, device_id = %x\n", manuf_id, device_id);
+ printf ("manuf_id = %x, device_id = %x\n", manuf_id, device_id);
#endif
+ /* find out what kind of flash we are using */
+ if ((manuf_id == (uchar) (AMD_MANUFACT))
+ && (device_id == AMD_ID_LV033C)) {
+ flash_info[i].flash_id =
+ ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) |
+ (FLASH_AM033C & FLASH_TYPEMASK);
+
+ /* set individual sector start addresses */
+ for (j = 0; j < flash_info[i].sector_count; j++) {
+ flash_info[i].start[j] =
+ (CFG_FLASH_BASE + i * FLASH_BANK_SIZE +
+ j * MAIN_SECT_SIZE);
+ }
+ }
- if ( (manuf_id == (uchar)(AMD_MANUFACT)) &&
- ( device_id == AMD_ID_LV116DT))
- {
- flash_info[i].flash_id = ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) |
- (AMD_ID_LV116DT & FLASH_TYPEMASK);
- } else {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- addr[0] = (long)0xFFFFFFFF;
- goto Done;
+ else if ((manuf_id == (uchar) (AMD_MANUFACT)) &&
+ (device_id == AMD_ID_LV116DT)) {
+ flash_info[i].flash_id =
+ ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) |
+ (FLASH_AM160T & FLASH_TYPEMASK);
+
+ /* set individual sector start addresses */
+ for (j = 0; j < flash_info[i].sector_count; j++) {
+ flash_info[i].start[j] =
+ (CFG_FLASH_BASE + i * FLASH_BANK_SIZE +
+ j * MAIN_SECT_SIZE);
+
+ if (j < (CFG_MAX_FLASH_SECT - 3)) {
+ flash_info[i].start[j] =
+ (CFG_FLASH_BASE + i * FLASH_BANK_SIZE +
+ j * MAIN_SECT_SIZE);
+ } else if (j == (CFG_MAX_FLASH_SECT - 3)) {
+ flash_info[i].start[j] =
+ (flash_info[i].start[j - 1] + SECT_SIZE_32KB);
+
+ } else {
+ flash_info[i].start[j] =
+ (flash_info[i].start[j - 1] + SECT_SIZE_8KB);
+ }
+ }
+ }
+
+ else {
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+ addr[0] = 0xFF;
+ goto Done;
}
#if defined DEBUG_FLASH
printf ("flash_id = 0x%08lX\n", flash_info[i].flash_id);
#endif
- addr[0] = (long)0xFFFFFFFF;
-
- flash_info[i].size = FLASH_BANK_SIZE;
- flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
- memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
-
- for (j = 0; j < flash_info[i].sector_count; j++)
- {
+ addr[0] = 0xFF;
- if (j < (CFG_MAX_FLASH_SECT - 3) )
+ memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
- flash_info[i].start[j] = CFG_FLASH_BASE + i * FLASH_BANK_SIZE +
- j * MAIN_SECT_SIZE;
+ total_size += flash_info[i].size;
+ }
- else if (j == (CFG_MAX_FLASH_SECT - 3) )
-
- flash_info[i].start[j] = flash_info[i].start[j-1] + SECT_SIZE_32KB;
-
-
- else
-
- flash_info[i].start[j] = flash_info[i].start[j-1] + SECT_SIZE_8KB;
-
- }
-
- size += flash_info[i].size;
- }
-
- /* Protect monitor and environment sectors
- */
+ /* 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]);
+ 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]);
+#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
-Done:
- return size;
+ Done:
+ return total_size;
}
/*-----------------------------------------------------------------------
*/
-void flash_print_info(flash_info_t *info)
+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;
+ 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_AM033C:
+ type = "AM29LV033C (32 Mbit, uniform sector size)";
+ break;
+ case FLASH_AM160T:
+ type = "AM29LV160T (16 Mbit, top boot sector)";
+ break;
+ 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_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)
+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;
+ 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 */
+ 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 */
}
- 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;
+ }
+ }
+
+ /* 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;
}
* 2 - Flash not erased
*/
-int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+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));
+ 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));
}
* 1 - write timeout
* 2 - Flash not erased
*/
-static int write_word (flash_info_t *info, ulong dest, ulong data)
+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 *addr2 = (FLASH_WORD_SIZE *) info->start[0];
volatile FLASH_WORD_SIZE *dest2;
- volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data;
+ 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);
+ /* 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);
+}
+
+/*-----------------------------------------------------------------------
+ */
+#if 0
+static void write_via_fpu (vu_long * addr, ulong * data)
+{
+ __asm__ __volatile__ ("lfd 1, 0(%0)"::"r" (data));
+ __asm__ __volatile__ ("stfd 1, 0(%0)"::"r" (addr));
}
+#endif
+
/*-----------------------------------------------------------------------
*/
+static __inline__ unsigned long get_msr (void)
+{
+ unsigned long msr;
+
+ __asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
+
+ return msr;
+}
+
+static __inline__ void set_msr (unsigned long msr)
+{
+ __asm__ __volatile__ ("mtmsr %0"::"r" (msr));
+}
projects / platform / kernel / u-boot.git / blobdiff