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-rw-r--r--board/integratorcp/flash.c235
1 files changed, 163 insertions, 72 deletions
diff --git a/board/integratorcp/flash.c b/board/integratorcp/flash.c
index b120d63..4d6eff0 100644
--- a/board/integratorcp/flash.c
+++ b/board/integratorcp/flash.c
@@ -1,4 +1,7 @@
/*
+ * (C) Copyright 2004
+ * Xiaogeng (Shawn) Jin, Agilent Technologies, xiaogeng_jin@agilent.com
+ *
* (C) Copyright 2001
* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
*
@@ -31,20 +34,22 @@
#include <common.h>
#include <linux/byteorder/swab.h>
-#define PHYS_FLASH_SECT_SIZE 0x00020000 /* 256 KB sectors (x2) */
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+#define DEBUG
+
+#define PHYS_FLASH_SECT_SIZE 0x00040000 /* 256 KB sectors (x2) */
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
/* Board support for 1 or 2 flash devices */
-#undef FLASH_PORT_WIDTH32
-#define FLASH_PORT_WIDTH16
+#define FLASH_PORT_WIDTH32
+#undef FLASH_PORT_WIDTH16
#ifdef FLASH_PORT_WIDTH16
-#define FLASH_PORT_WIDTH ushort
-#define FLASH_PORT_WIDTHV vu_short
+#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 FLASH_PORT_WIDTH ulong
+#define FLASH_PORT_WIDTHV vu_long
#define SWAP(x) __swab32(x)
#endif
@@ -67,6 +72,12 @@ OrgDef OrgIntel_28F256L18T[] = {
{255, 128 * 1024}, /* 255 * 128kBytes sectors */
};
+/* CP control register base address */
+#define CPCR_BASE 0xCB000000
+#define CPCR_EXTRABANK 0x8
+#define CPCR_FLASHSIZE 0x4
+#define CPCR_FLWREN 0x2
+#define CPCR_FLVPPEN 0x1
/*-----------------------------------------------------------------------
* Functions
@@ -83,29 +94,50 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt);
/*-----------------------------------------------------------------------
*/
-
unsigned long flash_init (void)
{
- int i;
+ int i, nbanks;
ulong size = 0;
- for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
- 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 too many flash banks!\n");
- break;
- }
+ vu_long *cpcr = (vu_long *)CPCR_BASE;
+
+ /* Check if there is an extra bank of flash */
+ if (cpcr[1] & CPCR_EXTRABANK)
+ nbanks = 2;
+ else
+ nbanks = 1;
+
+ if (nbanks > CFG_MAX_FLASH_BANKS)
+ nbanks = CFG_MAX_FLASH_BANKS;
+
+ /* Enable flash write */
+ cpcr[1] |= 3;
+
+ for (i = 0; i < nbanks; i++) {
+ flash_get_size ((FPW *)(CFG_FLASH_BASE + size), &flash_info[i]);
+ flash_get_offsets (CFG_FLASH_BASE + size, &flash_info[i]);
size += flash_info[i].size;
}
- /* Protect monitor and environment sectors
- */
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+ /* monitor protection */
+ flash_protect (FLAG_PROTECT_SET,
+ CFG_MONITOR_BASE,
+ CFG_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]);
+#endif
+
+#ifdef CFG_ENV_IS_IN_FLASH
+ /* ENV protection ON */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
+ &flash_info[0]);
+#endif
+
+ /* Protect SIB (0x24800000) and bootMonitor (0x24c00000) */
flash_protect (FLAG_PROTECT_SET,
- CFG_FLASH_BASE,
- CFG_FLASH_BASE + monitor_flash_len - 1, &flash_info[0]);
+ flash_info[0].start[62],
+ flash_info[0].start[63] + PHYS_FLASH_SECT_SIZE - 1,
+ &flash_info[0]);
return size;
}
@@ -115,23 +147,15 @@ unsigned long flash_init (void)
static void flash_get_offsets (ulong base, flash_info_t * info)
{
int i;
- OrgDef *pOrgDef;
- pOrgDef = OrgIntel_28F256L18T;
if (info->flash_id == FLASH_UNKNOWN) {
return;
}
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
for (i = 0; i < info->sector_count; i++) {
- if (i > 255) {
- info->start[i] = base + (i * 0x8000);
- info->protect[i] = 0;
- } else {
- info->start[i] = base +
- (i * PHYS_FLASH_SECT_SIZE);
- info->protect[i] = 0;
- }
+ info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
+ info->protect[i] = 0;
}
}
}
@@ -156,10 +180,20 @@ void flash_print_info (flash_info_t * info)
break;
}
+ /* Integrator CP board uses 28F640J3C or 28F128J3C parts,
+ * which have the same device id numbers as 28F640J3A or
+ * 28F128J3A
+ */
switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_28F256L18T:
printf ("FLASH 28F256L18T\n");
break;
+ case FLASH_28F640J3A:
+ printf ("FLASH 28F640J3C\n");
+ break;
+ case FLASH_28F128J3A:
+ printf ("FLASH 28F128J3C\n");
+ break;
default:
printf ("Unknown Chip Type\n");
break;
@@ -185,6 +219,17 @@ void flash_print_info (flash_info_t * info)
static ulong flash_get_size (FPW * addr, flash_info_t * info)
{
volatile FPW value;
+ vu_long *cpcr = (vu_long *)CPCR_BASE;
+ int nsects;
+
+ /* Check the flash size */
+ if (cpcr[1] & CPCR_FLASHSIZE)
+ nsects = 128;
+ else
+ nsects = 64;
+
+ if (nsects > CFG_MAX_FLASH_SECT)
+ nsects = CFG_MAX_FLASH_SECT;
/* Write auto select command: read Manufacturer ID */
addr[0x5555] = (FPW) 0x00AA00AA;
@@ -204,19 +249,31 @@ static ulong flash_get_size (FPW * addr, flash_info_t * info)
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 */
+ addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
+ return (0); /* no or unknown flash */
}
mb ();
- value = addr[1]; /* device ID */
+ value = addr[1]; /* device ID */
switch (value) {
case (FPW) (INTEL_ID_28F256L18T):
info->flash_id += FLASH_28F256L18T;
info->sector_count = 259;
info->size = 0x02000000;
- break; /* => 32 MB */
+ break; /* => 32 MB */
+
+ case (FPW) (INTEL_ID_28F640J3A):
+ info->flash_id += FLASH_28F640J3A;
+ info->sector_count = nsects;
+ info->size = nsects * PHYS_FLASH_SECT_SIZE;
+ break;
+
+ case (FPW) (INTEL_ID_28F128J3A):
+ info->flash_id += FLASH_28F128J3A;
+ info->sector_count = nsects;
+ info->size = nsects * PHYS_FLASH_SECT_SIZE;
+ break;
default:
info->flash_id = FLASH_UNKNOWN;
@@ -241,23 +298,32 @@ static ulong flash_get_size (FPW * addr, flash_info_t * info)
*/
void flash_unprotect_sectors (FPWV * addr)
{
-#define PD_FINTEL_WSMS_READY_MASK 0x0080
+ FPW status;
*addr = (FPW) 0x00500050; /* clear status register */
/* this sends the clear lock bit command */
*addr = (FPW) 0x00600060;
*addr = (FPW) 0x00D000D0;
+
+ reset_timer_masked();
+ while (((status = *addr) & (FPW)0x00800080) != 0x00800080) {
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) {
+ printf("Timeout");
+ break;
+ }
+ }
+
+ *addr = (FPW) 0x00FF00FF;
}
/*-----------------------------------------------------------------------
*/
-
int flash_erase (flash_info_t * info, int s_first, int s_last)
{
int flag, prot, sect;
- ulong type, start, last;
+ ulong type;
int rcode = 0;
if ((s_first < 0) || (s_first > s_last)) {
@@ -290,13 +356,6 @@ int flash_erase (flash_info_t * info, int s_first, int s_last)
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; sect++) {
if (info->protect[sect] == 0) { /* not protected */
@@ -305,36 +364,53 @@ int flash_erase (flash_info_t * info, int s_first, int s_last)
printf ("Erasing sector %2d ... ", sect);
- flash_unprotect_sectors (addr);
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts ();
+
+ /* flash_unprotect_sectors (addr); */
/* arm simple, non interrupt dependent timer */
reset_timer_masked ();
- *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");
- /* suspend erase */
- *addr = (FPW) 0x00B000B0;
- /* reset to read mode */
- *addr = (FPW) 0x00FF00FF;
- rcode = 1;
- break;
+ *addr = (FPW) 0x00500050; /* clear status register */
+ *addr = (FPW) 0x00200020; /* erase setup */
+ *addr = (FPW) 0x00D000D0; /* erase confirm */
+ mb();
+
+ udelay(1000); /* Let's wait 1 ms */
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
+ if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+ *addr = (FPW)0x00700070;
+ status = *addr;
+ if ((status & (FPW) 0x00400040) == (FPW) 0x00400040) {
+ /* erase suspended? Resume it */
+ reset_timer_masked();
+ *addr = (FPW) 0x00D000D0;
+ } else {
+#ifdef DEBUG
+ printf ("Timeout,0x%08x\n", status);
+#else
+ printf("Timeout\n");
+#endif
+
+ *addr = (FPW) 0x00500050;
+ *addr = (FPW) 0x00FF00FF; /* reset to read mode */
+ rcode = 1;
+ break;
+ }
}
}
- /* clear status register cmd. */
- *addr = (FPW) 0x00500050;
- *addr = (FPW) 0x00FF00FF;/* resest to read mode */
+ *addr = (FPW) 0x00FF00FF; /* resest to read mode */
printf (" done\n");
}
}
+
return rcode;
}
@@ -345,7 +421,6 @@ int flash_erase (flash_info_t * info, int s_first, int s_last)
* 2 - Flash not erased
* 4 - Flash not identified
*/
-
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
ulong cp, wp;
@@ -443,23 +518,39 @@ static int write_data (flash_info_t * info, ulong dest, FPW data)
printf ("not erased at %08lx (%x)\n", (ulong) addr, *addr);
return (2);
}
- flash_unprotect_sectors (addr);
+
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts ();
+
+ /* flash_unprotect_sectors (addr); */
+
*addr = (FPW) 0x00400040; /* write setup */
*addr = data;
+ mb();
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
/* 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 */
+#ifdef DEBUG
+ *addr = (FPW) 0x00700070;
+ status = *addr;
+ printf("## status=0x%08x, addr=0x%08x\n", status, addr);
+#endif
+ *addr = (FPW) 0x00500050; /* clear status register cmd */
+ *addr = (FPW) 0x00FF00FF; /* restore read mode */
return (1);
}
}
- *addr = (FPW) 0x00FF00FF; /* restore read mode */
+
+ *addr = (FPW) 0x00FF00FF; /* restore read mode */
return (0);
}
generated by cgit v1.1 at 2024-12-02 23:01:45 +0000