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-rw-r--r--board/dnp1110/flash.c590
1 files changed, 271 insertions, 319 deletions
diff --git a/board/dnp1110/flash.c b/board/dnp1110/flash.c
index ca9aff9..bb6d2e7 100644
--- a/board/dnp1110/flash.c
+++ b/board/dnp1110/flash.c
@@ -1,7 +1,9 @@
/*
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Rolf Offermanns <rof@sysgo.de>
+ * (C) Copyright 2001
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -23,81 +25,58 @@
*/
#include <common.h>
-
-ulong myflush(void);
+#include <linux/byteorder/swab.h>
-#define FLASH_BANK_SIZE 0x800000
-#define MAIN_SECT_SIZE 0x20000
-#define PARAM_SECT_SIZE 0x4000
-
-/* puzzle magic for lart
- * data_*_flash are def'd in flashasm.S
- */
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
-extern u32 data_from_flash(u32);
-extern u32 data_to_flash(u32);
+/* Board support for 1 or 2 flash devices */
+#undef FLASH_PORT_WIDTH32
+#define FLASH_PORT_WIDTH16
-#define PUZZLE_FROM_FLASH(x) (x)
-#define PUZZLE_TO_FLASH(x) (x)
+#ifdef FLASH_PORT_WIDTH16
+#define FLASH_PORT_WIDTH ushort
+#define FLASH_PORT_WIDTHV vu_short
+#define SWAP(x) __swab16(x)
+#else
+#define FLASH_PORT_WIDTH ulong
+#define FLASH_PORT_WIDTHV vu_long
+#define SWAP(x) __swab32(x)
+#endif
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+#define FPW FLASH_PORT_WIDTH
+#define FPWV FLASH_PORT_WIDTHV
+#define mb() __asm__ __volatile__ ("" : : : "memory")
-#define CMD_READ_ARRAY 0x00FF00FF
-#define CMD_IDENTIFY 0x00900090
-#define CMD_ERASE_SETUP 0x00200020
-#define CMD_ERASE_CONFIRM 0x00D000D0
-#define CMD_PROGRAM 0x00400040
-#define CMD_RESUME 0x00D000D0
-#define CMD_SUSPEND 0x00B000B0
-#define CMD_STATUS_READ 0x00700070
-#define CMD_STATUS_RESET 0x00500050
-
-#define BIT_BUSY 0x00800080
-#define BIT_ERASE_SUSPEND 0x00400040
-#define BIT_ERASE_ERROR 0x00200020
-#define BIT_PROGRAM_ERROR 0x00100010
-#define BIT_VPP_RANGE_ERROR 0x00080008
-#define BIT_PROGRAM_SUSPEND 0x00040004
-#define BIT_PROTECT_ERROR 0x00020002
-#define BIT_UNDEFINED 0x00010001
-
-#define BIT_SEQUENCE_ERROR 0x00300030
-#define BIT_TIMEOUT 0x80000000
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size (FPW *addr, flash_info_t *info);
+static int write_data (flash_info_t *info, ulong dest, FPW data);
+static void flash_get_offsets (ulong base, flash_info_t *info);
+void inline spin_wheel(void);
/*-----------------------------------------------------------------------
*/
-ulong flash_init(void)
+unsigned long flash_init (void)
{
- int i, j;
+ int i;
ulong size = 0;
for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
{
- ulong flashbase = 0;
- flash_info[i].flash_id =
- (INTEL_MANUFACT & FLASH_VENDMASK) |
- (INTEL_ID_28F160F3B & FLASH_TYPEMASK);
- 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);
- if (i == 0)
- flashbase = PHYS_FLASH_1;
- else
- panic("configured to many flash banks!\n");
- for (j = 0; j < flash_info[i].sector_count; j++)
- {
- if (j <= 7)
- {
- flash_info[i].start[j] = flashbase + j * PARAM_SECT_SIZE;
- }
- else
- {
- flash_info[i].start[j] = flashbase + (j - 7)*MAIN_SECT_SIZE;
- }
- }
+ switch (i)
+ {
+ case 0:
+ flash_get_size((FPW *)PHYS_FLASH_1, &flash_info[i]);
+ flash_get_offsets(PHYS_FLASH_1, &flash_info[i]);
+ break;
+ default:
+ panic("configured to many flash banks!\n");
+ break;
+ }
size += flash_info[i].size;
}
@@ -118,150 +97,138 @@ ulong flash_init(void)
/*-----------------------------------------------------------------------
*/
-void flash_print_info (flash_info_t *info)
+static void flash_get_offsets (ulong base, flash_info_t *info)
{
- int i;
-
- switch (info->flash_id & FLASH_VENDMASK)
- {
- case (INTEL_MANUFACT & FLASH_VENDMASK):
- printf("Intel: ");
- break;
- default:
- printf("Unknown Vendor ");
- break;
- }
+ int i;
- switch (info->flash_id & FLASH_TYPEMASK)
- {
- case (INTEL_ID_28F160F3B & FLASH_TYPEMASK):
- printf("2x 28F160F3B (16Mbit)\n");
- break;
- default:
- printf("Unknown Chip Type\n");
- goto Done;
- 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 ");
+ if (info->flash_id == FLASH_UNKNOWN) {
+ return;
}
- printf (" %08lX%s", info->start[i],
- info->protect[i] ? " (RO)" : " ");
- }
- printf ("\n");
-Done:
+ if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
+ for (i = 0; i < info->sector_count; i++) {
+ info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
+ info->protect[i] = 0;
+ }
+ }
}
/*-----------------------------------------------------------------------
*/
-
-int flash_error (ulong code)
+void flash_print_info (flash_info_t *info)
{
- /* Check bit patterns */
- /* SR.7=0 is busy, SR.7=1 is ready */
- /* all other flags indicate error on 1 */
- /* SR.0 is undefined */
- /* Timeout is our faked flag */
-
- /* sequence is described in Intel 290644-005 document */
-
- /* check Timeout */
- if (code & BIT_TIMEOUT)
- {
- printf ("Timeout\n");
- return ERR_TIMOUT;
- }
+ int i;
- /* check Busy, SR.7 */
- if (~code & BIT_BUSY)
- {
- printf ("Busy\n");
- return ERR_PROG_ERROR;
- }
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("missing or unknown FLASH type\n");
+ return;
+ }
- /* check Vpp low, SR.3 */
- if (code & BIT_VPP_RANGE_ERROR)
- {
- printf ("Vpp range error\n");
- return ERR_PROG_ERROR;
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case FLASH_MAN_INTEL: printf ("INTEL "); break;
+ default: printf ("Unknown Vendor "); break;
}
- /* check Device Protect Error, SR.1 */
- if (code & BIT_PROTECT_ERROR)
- {
- printf ("Device protect error\n");
- return ERR_PROG_ERROR;
- }
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case FLASH_28F128J3A:
+ printf ("28F128J3A\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;
+}
- /* check Command Seq Error, SR.4 & SR.5 */
- if (code & BIT_SEQUENCE_ERROR)
- {
- printf ("Command seqence error\n");
- return ERR_PROG_ERROR;
+/*
+ * The following code cannot be run from FLASH!
+ */
+static ulong flash_get_size (FPW *addr, flash_info_t *info)
+{
+ volatile FPW value;
+ /* Write auto select command: read Manufacturer ID */
+ addr[0x5555] = (FPW)0x00AA00AA;
+ addr[0x2AAA] = (FPW)0x00550055;
+ addr[0x5555] = (FPW)0x00900090;
+
+ mb();
+ value = addr[0];
+
+ switch (value) {
+
+ case (FPW)INTEL_MANUFACT:
+ info->flash_id = FLASH_MAN_INTEL;
+ break;
+
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ info->sector_count = 0;
+ info->size = 0;
+ addr[0] = (FPW)0x00FF00FF; /* restore read mode */
+ return (0); /* no or unknown flash */
}
- /* check Block Erase Error, SR.5 */
- if (code & BIT_ERASE_ERROR)
- {
- printf ("Block erase error\n");
- return ERR_PROG_ERROR;
- }
+ mb();
+ value = addr[1]; /* device ID */
+ switch (value) {
- /* check Program Error, SR.4 */
- if (code & BIT_PROGRAM_ERROR)
- {
- printf ("Program error\n");
- return ERR_PROG_ERROR;
- }
+ case (FPW)INTEL_ID_28F128J3A:
+ info->flash_id += FLASH_28F128J3A;
+ info->sector_count = 128;
+ info->size = 0x02000000;
+ break; /* => 16 MB */
- /* check Block Erase Suspended, SR.6 */
- if (code & BIT_ERASE_SUSPEND)
- {
- printf ("Block erase suspended\n");
- return ERR_PROG_ERROR;
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ break;
}
- /* check Program Suspended, SR.2 */
- if (code & BIT_PROGRAM_SUSPEND)
- {
- printf ("Program suspended\n");
- return ERR_PROG_ERROR;
- }
+ if (info->sector_count > CFG_MAX_FLASH_SECT) {
+ printf ("** ERROR: sector count %d > max (%d) **\n",
+ info->sector_count, CFG_MAX_FLASH_SECT);
+ info->sector_count = CFG_MAX_FLASH_SECT;
+ }
+
+ addr[0] = (FPW)0x00FF00FF; /* restore read mode */
- /* OK, no error */
- return ERR_OK;
+ return (info->size);
}
+
/*-----------------------------------------------------------------------
*/
int flash_erase (flash_info_t *info, int s_first, int s_last)
{
- ulong result;
- int iflag, cflag, prot, sect;
- int rc = ERR_OK;
-
- /* first look for protection bits */
-
- if (info->flash_id == FLASH_UNKNOWN)
- return ERR_UNKNOWN_FLASH_TYPE;
+ int flag, prot, sect;
+ ulong type, start, last;
+ int rcode = 0;
if ((s_first < 0) || (s_first > s_last)) {
- return ERR_INVAL;
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("- missing\n");
+ } else {
+ printf ("- no sectors to erase\n");
+ }
+ return 1;
}
- if ((info->flash_id & FLASH_VENDMASK) !=
- (INTEL_MANUFACT & FLASH_VENDMASK)) {
- return ERR_UNKNOWN_FLASH_VENDOR;
+ type = (info->flash_id & FLASH_VENDMASK);
+ if ((type != FLASH_MAN_INTEL)) {
+ printf ("Can't erase unknown flash type %08lx - aborted\n",
+ info->flash_id);
+ return 1;
}
prot = 0;
@@ -270,152 +237,79 @@ int flash_erase (flash_info_t *info, int s_first, int s_last)
prot++;
}
}
- if (prot)
- return ERR_PROTECTED;
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- cflag = icache_status();
- icache_disable();
- iflag = disable_interrupts();
+ if (prot) {
+ printf ("- Warning: %d protected sectors will not be erased!\n",
+ prot);
+ } else {
+ printf ("\n");
+ }
+
+ start = get_timer (0);
+ last = start;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
/* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last && !ctrlc(); sect++)
- {
+ for (sect = s_first; sect<=s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ FPWV *addr = (FPWV *)(info->start[sect]);
+ FPW status;
+
printf("Erasing sector %2d ... ", sect);
/* arm simple, non interrupt dependent timer */
reset_timer_masked();
- if (info->protect[sect] == 0)
- { /* not protected */
- vu_long *addr = (vu_long *)(info->start[sect]);
-
- *addr = PUZZLE_TO_FLASH(CMD_STATUS_RESET);
- *addr = PUZZLE_TO_FLASH(CMD_ERASE_SETUP);
- *addr = PUZZLE_TO_FLASH(CMD_ERASE_CONFIRM);
-
- /* wait until flash is ready */
- do
- {
- /* check timeout */
- if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
- {
- *addr = PUZZLE_TO_FLASH(CMD_SUSPEND);
- result = BIT_TIMEOUT;
- break;
- }
-
- result = PUZZLE_FROM_FLASH(*addr);
- } while (~result & BIT_BUSY);
-
- *addr = PUZZLE_TO_FLASH(CMD_READ_ARRAY);
-
- if ((rc = flash_error(result)) != ERR_OK)
- goto outahere;
-
- printf("ok.\n");
- }
- else /* it was protected */
- {
- printf("protected!\n");
+ *addr = (FPW)0x00500050; /* clear status register */
+ *addr = (FPW)0x00200020; /* erase setup */
+ *addr = (FPW)0x00D000D0; /* erase confirm */
+
+ while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) {
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) {
+ printf ("Timeout\n");
+ *addr = (FPW)0x00B000B0; /* suspend erase */
+ *addr = (FPW)0x00FF00FF; /* reset to read mode */
+ rcode = 1;
+ break;
}
}
- if (ctrlc())
- printf("User Interrupt!\n");
-
-outahere:
- /* allow flash to settle - wait 10 ms */
- udelay_masked(10000);
-
- if (iflag)
- enable_interrupts();
-
- if (cflag)
- icache_enable();
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash
- */
-
-volatile static int write_word (flash_info_t *info, ulong dest, ulong data)
-{
- vu_long *addr = (vu_long *)dest;
- ulong result;
- int rc = ERR_OK;
- int cflag, iflag;
-
- /* Check if Flash is (sufficiently) erased
- */
- result = PUZZLE_FROM_FLASH(*addr);
- if ((result & data) != data)
- return ERR_NOT_ERASED;
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- cflag = icache_status();
- icache_disable();
- iflag = disable_interrupts();
-
- *addr = PUZZLE_TO_FLASH(CMD_STATUS_RESET);
- *addr = PUZZLE_TO_FLASH(CMD_PROGRAM);
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked();
-
- /* wait until flash is ready */
- do
- {
- /* check timeout */
- if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
- {
- *addr = PUZZLE_TO_FLASH(CMD_SUSPEND);
- result = BIT_TIMEOUT;
- break;
- }
-
- result = PUZZLE_FROM_FLASH(*addr);
- } while (~result & BIT_BUSY);
-
- *addr = PUZZLE_TO_FLASH(CMD_READ_ARRAY);
-
- rc = flash_error(result);
+ *addr = (FPW)0x00500050; /* clear status register cmd. */
+ *addr = (FPW)0x00FF00FF; /* resest to read mode */
- if (iflag)
- enable_interrupts();
-
- if (cflag)
- icache_enable();
-
- return rc;
+ printf (" done\n");
+ }
+ }
+ return rcode;
}
/*-----------------------------------------------------------------------
- * Copy memory to flash.
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 4 - Flash not identified
*/
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
{
- ulong cp, wp, data;
- int l;
- int i, rc;
+ ulong cp, wp;
+ FPW data;
+ int count, i, l, rc, port_width;
- wp = (addr & ~3); /* get lower word aligned address */
+ if (info->flash_id == FLASH_UNKNOWN) {
+ return 4;
+ }
+/* get lower word aligned address */
+#ifdef FLASH_PORT_WIDTH16
+ wp = (addr & ~1);
+ port_width = 2;
+#else
+ wp = (addr & ~3);
+ port_width = 4;
+#endif
/*
* handle unaligned start bytes
@@ -423,51 +317,109 @@ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
if ((l = addr - wp) != 0) {
data = 0;
for (i=0, cp=wp; i<l; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 24);
+ data = (data << 8) | (*(uchar *)cp);
}
- for (; i<4 && cnt>0; ++i) {
- data = (data >> 8) | (*src++ << 24);
+ for (; i<port_width && cnt>0; ++i) {
+ data = (data << 8) | *src++;
--cnt;
++cp;
}
- for (; cnt==0 && i<4; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 24);
+ for (; cnt==0 && i<port_width; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
}
- if ((rc = write_word(info, wp, data)) != 0) {
+ if ((rc = write_data(info, wp, SWAP(data))) != 0) {
return (rc);
}
- wp += 4;
+ wp += port_width;
}
/*
* handle word aligned part
*/
- while (cnt >= 4) {
- data = *((vu_long*)src);
- if ((rc = write_word(info, wp, data)) != 0) {
+ count = 0;
+ while (cnt >= port_width) {
+ data = 0;
+ for (i=0; i<port_width; ++i) {
+ data = (data << 8) | *src++;
+ }
+ if ((rc = write_data(info, wp, SWAP(data))) != 0) {
return (rc);
}
- src += 4;
- wp += 4;
- cnt -= 4;
+ wp += port_width;
+ cnt -= port_width;
+ if (count++ > 0x800)
+ {
+ spin_wheel();
+ count = 0;
+ }
}
if (cnt == 0) {
- return ERR_OK;
+ return (0);
}
/*
* handle unaligned tail bytes
*/
data = 0;
- for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
- data = (data >> 8) | (*src++ << 24);
+ for (i=0, cp=wp; i<port_width && cnt>0; ++i, ++cp) {
+ data = (data << 8) | *src++;
--cnt;
}
- for (; i<4; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 24);
+ for (; i<port_width; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
+ }
+
+ return (write_data(info, wp, SWAP(data)));
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word or halfword to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static int write_data (flash_info_t *info, ulong dest, FPW data)
+{
+ FPWV *addr = (FPWV *)dest;
+ ulong status;
+ int flag;
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*addr & data) != data) {
+ printf("not erased at %08lx (%x)\n",(ulong)addr,*addr);
+ return (2);
+ }
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ *addr = (FPW)0x00400040; /* write setup */
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ /* wait while polling the status register */
+ while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) {
+ if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) {
+ *addr = (FPW)0x00FF00FF; /* restore read mode */
+ return (1);
+ }
}
- return write_word(info, wp, data);
+ *addr = (FPW)0x00FF00FF; /* restore read mode */
+
+ return (0);
+}
+
+void inline
+spin_wheel(void)
+{
+ static int p=0;
+ static char w[] = "\\/-";
+
+ printf("\010%c", w[p]);
+ (++p == 3) ? (p = 0) : 0;
}
+
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