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-rw-r--r--board/lubbock/flash.c467
1 files changed, 268 insertions, 199 deletions
diff --git a/board/lubbock/flash.c b/board/lubbock/flash.c
index 84c09a8..a938750 100644
--- a/board/lubbock/flash.c
+++ b/board/lubbock/flash.c
@@ -1,10 +1,9 @@
/*
- * (C) Copyright 2002
+ * (C) Copyright 2001
* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
*
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -26,46 +25,62 @@
*/
#include <common.h>
+#include <linux/byteorder/swab.h>
-#define FLASH_BANK_SIZE 0x2000000
-#define MAIN_SECT_SIZE 0x40000 /* 2x16 = 256k per sector */
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+/* Board support for 1 or 2 flash devices */
+#define FLASH_PORT_WIDTH32
+#undef FLASH_PORT_WIDTH16
+
+#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
+
+#define FPW FLASH_PORT_WIDTH
+#define FPWV FLASH_PORT_WIDTHV
+
+#define mb() __asm__ __volatile__ ("" : : : "memory")
/*-----------------------------------------------------------------------
+ * 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_28F128J3 & 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);
switch (i)
{
case 0:
- flashbase = PHYS_FLASH_1;
+ flash_get_size((FPW *)PHYS_FLASH_1, &flash_info[i]);
+ flash_get_offsets(PHYS_FLASH_1, &flash_info[i]);
break;
case 1:
- flashbase = PHYS_FLASH_2;
+ flash_get_size((FPW *)PHYS_FLASH_2, &flash_info[i]);
+ flash_get_offsets(PHYS_FLASH_2, &flash_info[i]);
break;
default:
panic("configured to many flash banks!\n");
break;
}
- for (j = 0; j < flash_info[i].sector_count; j++)
- {
- flash_info[i].start[j] = flashbase + j*MAIN_SECT_SIZE;
- }
size += flash_info[i].size;
}
@@ -86,71 +101,140 @@ ulong flash_init(void)
/*-----------------------------------------------------------------------
*/
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+ int i;
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ return;
+ }
+
+ 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;
+ }
+ }
+}
+
+/*-----------------------------------------------------------------------
+ */
void flash_print_info (flash_info_t *info)
{
- int i, j;
+ int i;
- for (j=0; j<CFG_MAX_FLASH_BANKS; j++)
- {
- switch (info->flash_id & FLASH_VENDMASK)
- {
- case (INTEL_MANUFACT & FLASH_VENDMASK):
- printf("Intel: ");
- break;
- default:
- printf("Unknown Vendor ");
- break;
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("missing or unknown FLASH type\n");
+ return;
}
- switch (info->flash_id & FLASH_TYPEMASK)
- {
- case (INTEL_ID_28F128J3 & FLASH_TYPEMASK):
- printf("28F128J3 (128Mbit)\n");
- break;
- default:
- printf("Unknown Chip Type\n");
- goto Done;
- break;
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case FLASH_MAN_INTEL: printf ("INTEL "); break;
+ default: printf ("Unknown Vendor "); break;
+ }
+
+ 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",
+ 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++)
- {
+ 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 (" %08lX%s",
+ info->start[i],
+ info->protect[i] ? " (RO)" : " "
+ );
}
printf ("\n");
- info++;
+ return;
+}
+
+/*
+ * 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 */
+ }
+
+ mb();
+ value = addr[1]; /* device ID */
+
+ switch (value) {
+
+ case (FPW)INTEL_ID_28F128J3A:
+ info->flash_id += FLASH_28F128J3A;
+ info->sector_count = 128;
+ info->size = 0x02000000;
+ break; /* => 16 MB */
+
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ break;
+ }
+
+ 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;
}
-Done:
+ addr[0] = (FPW)0x00FF00FF; /* restore read mode */
+
+ return (info->size);
}
+
/*-----------------------------------------------------------------------
*/
int flash_erase (flash_info_t *info, int s_first, int s_last)
{
int flag, prot, sect;
- int rc = ERR_OK;
-
- if (info->flash_id == FLASH_UNKNOWN)
- return ERR_UNKNOWN_FLASH_TYPE;
+ ulong type, start, now, 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;
@@ -159,153 +243,79 @@ 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.
- */
+ 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_short *addr = (vu_short *)(info->start[sect]);
+ *addr = (FPW)0x00500050; /* clear status register */
+ *addr = (FPW)0x00200020; /* erase setup */
+ *addr = (FPW)0x00D000D0; /* erase confirm */
- *addr = 0x20; /* erase setup */
- *addr = 0xD0; /* erase confirm */
-
- while ((*addr & 0x80) != 0x80) {
+ while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) {
if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) {
- *addr = 0xB0; /* suspend erase */
- *addr = 0xFF; /* reset to read mode */
- rc = ERR_TIMOUT;
- goto outahere;
- }
- }
-
- /* clear status register command */
- *addr = 0x50;
- /* reset to read mode */
- *addr = 0xFF;
+ printf ("Timeout\n");
+ *addr = (FPW)0x00B000B0; /* suspend erase */
+ *addr = (FPW)0x00FF00FF; /* reset to read mode */
+ rcode = 1;
+ break;
}
- printf("ok.\n");
}
- if (ctrlc())
- printf("User Interrupt!\n");
-outahere:
+ *addr = 0x00500050; /* clear status register cmd. */
+ *addr = 0x00FF00FF; /* resest to read mode */
- /* allow flash to settle - wait 10 ms */
- udelay_masked(10000);
-
- if (flag)
- enable_interrupts();
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash
- */
-
-static int write_word (flash_info_t *info, ulong dest, ushort data)
-{
- vu_short *addr = (vu_short *)dest, val;
- int rc = ERR_OK;
- int flag;
-
- /* Check if Flash is (sufficiently) erased
- */
- if ((*addr & 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.
- */
- flag = disable_interrupts();
-
- /* clear status register command */
- *addr = 0x50;
-
- /* program set-up command */
- *addr = 0x40;
-
- /* latch address/data */
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked();
-
- /* wait while polling the status register */
- while(((val = *addr) & 0x80) != 0x80)
- {
- if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) {
- rc = ERR_TIMOUT;
- /* suspend program command */
- *addr = 0xB0;
- goto outahere;
- }
- }
-
- if(val & 0x1A) { /* check for error */
- printf("\nFlash write error %02x at address %08lx\n",
- (int)val, (unsigned long)dest);
- if(val & (1<<3)) {
- printf("Voltage range error.\n");
- rc = ERR_PROG_ERROR;
- goto outahere;
+ printf (" done\n");
}
- if(val & (1<<1)) {
- printf("Device protect error.\n");
- rc = ERR_PROTECTED;
- goto outahere;
}
- if(val & (1<<4)) {
- printf("Programming error.\n");
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
-
-outahere:
- /* read array command */
- *addr = 0xFF;
-
- if (flag)
- enable_interrupts();
-
- return rc;
+ 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;
- ushort data;
- int l;
- int i, rc;
+ FPW data;
+ int count, i, l, rc, port_width;
- wp = (addr & ~1); /* 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
@@ -313,51 +323,110 @@ 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 << 8);
+ data = (data << 8) | (*(uchar *)cp);
}
- for (; i<2 && cnt>0; ++i) {
- data = (data >> 8) | (*src++ << 8);
+ for (; i<port_width && cnt>0; ++i) {
+ data = (data << 8) | *src++;
--cnt;
++cp;
}
- for (; cnt==0 && i<2; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 8);
+ 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 += 2;
+ wp += port_width;
}
/*
* handle word aligned part
*/
- while (cnt >= 2) {
- data = *((vu_short*)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 += 2;
- wp += 2;
- cnt -= 2;
+ 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<2 && cnt>0; ++i, ++cp) {
- data = (data >> 8) | (*src++ << 8);
+ for (i=0, cp=wp; i<port_width && cnt>0; ++i, ++cp) {
+ data = (data << 8) | *src++;
--cnt;
}
- for (; i<2; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 8);
+ 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;
+ ulong start;
+ 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 r=0,p=0;
+ static char w[] = "\\/-";
+
+ printf("\010%c", w[p]);
+ (++p == 3) ? (p = 0) : 0;
}
+
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