summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/Makefile1
-rw-r--r--drivers/mtd/cfi_flash.c1907
-rw-r--r--drivers/mtd/jedec_flash.c311
3 files changed, 1434 insertions, 785 deletions
diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile
index 95c5e02af9..952e919843 100644
--- a/drivers/mtd/Makefile
+++ b/drivers/mtd/Makefile
@@ -29,6 +29,7 @@ COBJS-y += at45.o
COBJS-y += cfi_flash.o
COBJS-y += dataflash.o
COBJS-y += mw_eeprom.o
+COBJS-$(CONFIG_FLASH_CFI_LEGACY) += jedec_flash.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 5579a1efc1..f370e4fbd3 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -42,9 +42,12 @@
#ifdef CFG_FLASH_CFI_DRIVER
/*
- * This file implements a Common Flash Interface (CFI) driver for U-Boot.
- * The width of the port and the width of the chips are determined at initialization.
- * These widths are used to calculate the address for access CFI data structures.
+ * This file implements a Common Flash Interface (CFI) driver for
+ * U-Boot.
+ *
+ * The width of the port and the width of the chips are determined at
+ * initialization. These widths are used to calculate the address for
+ * access CFI data structures.
*
* References
* JEDEC Standard JESD68 - Common Flash Interface (CFI)
@@ -55,7 +58,7 @@
* AMD/Spansion Application Note: Migration from Single-byte to Three-byte
* Device IDs, Publication Number 25538 Revision A, November 8, 2001
*
- * define CFG_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
+ * Define CFG_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
* reading and writing ... (yes there is such a Hardware).
*/
@@ -98,10 +101,6 @@
#define AMD_STATUS_TOGGLE 0x40
#define AMD_STATUS_ERROR 0x20
-#define AMD_ADDR_ERASE_START ((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555)
-#define AMD_ADDR_START ((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555)
-#define AMD_ADDR_ACK ((info->portwidth == FLASH_CFI_8BIT) ? 0x555 : 0x2AA)
-
#define FLASH_OFFSET_MANUFACTURER_ID 0x00
#define FLASH_OFFSET_DEVICE_ID 0x01
#define FLASH_OFFSET_DEVICE_ID2 0x0E
@@ -110,7 +109,8 @@
#define FLASH_OFFSET_CFI_ALT 0x555
#define FLASH_OFFSET_CFI_RESP 0x10
#define FLASH_OFFSET_PRIMARY_VENDOR 0x13
-#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15 /* extended query table primary addr */
+/* extended query table primary address */
+#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15
#define FLASH_OFFSET_WTOUT 0x1F
#define FLASH_OFFSET_WBTOUT 0x20
#define FLASH_OFFSET_ETOUT 0x21
@@ -149,16 +149,9 @@ typedef union {
unsigned long long ll;
} cfiword_t;
-typedef union {
- volatile unsigned char *cp;
- volatile unsigned short *wp;
- volatile unsigned long *lp;
- volatile unsigned long long *llp;
-} cfiptr_t;
-
#define NUM_ERASE_REGIONS 4 /* max. number of erase regions */
-static uint flash_offset_cfi[2]={FLASH_OFFSET_CFI,FLASH_OFFSET_CFI_ALT};
+static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
/* use CFG_MAX_FLASH_BANKS_DETECT if defined */
#ifdef CFG_MAX_FLASH_BANKS_DETECT
@@ -176,46 +169,151 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* FLASH chips info */
#define CFG_FLASH_CFI_WIDTH FLASH_CFI_8BIT
#endif
+typedef unsigned long flash_sect_t;
+
+/* CFI standard query structure */
+struct cfi_qry {
+ u8 qry[3];
+ u16 p_id;
+ u16 p_adr;
+ u16 a_id;
+ u16 a_adr;
+ u8 vcc_min;
+ u8 vcc_max;
+ u8 vpp_min;
+ u8 vpp_max;
+ u8 word_write_timeout_typ;
+ u8 buf_write_timeout_typ;
+ u8 block_erase_timeout_typ;
+ u8 chip_erase_timeout_typ;
+ u8 word_write_timeout_max;
+ u8 buf_write_timeout_max;
+ u8 block_erase_timeout_max;
+ u8 chip_erase_timeout_max;
+ u8 dev_size;
+ u16 interface_desc;
+ u16 max_buf_write_size;
+ u8 num_erase_regions;
+ u32 erase_region_info[NUM_ERASE_REGIONS];
+} __attribute__((packed));
+
+struct cfi_pri_hdr {
+ u8 pri[3];
+ u8 major_version;
+ u8 minor_version;
+} __attribute__((packed));
+
+static void flash_write8(u8 value, void *addr)
+{
+ __raw_writeb(value, addr);
+}
+
+static void flash_write16(u16 value, void *addr)
+{
+ __raw_writew(value, addr);
+}
+
+static void flash_write32(u32 value, void *addr)
+{
+ __raw_writel(value, addr);
+}
+
+static void flash_write64(u64 value, void *addr)
+{
+ /* No architectures currently implement __raw_writeq() */
+ *(volatile u64 *)addr = value;
+}
+
+static u8 flash_read8(void *addr)
+{
+ return __raw_readb(addr);
+}
+
+static u16 flash_read16(void *addr)
+{
+ return __raw_readw(addr);
+}
+
+static u32 flash_read32(void *addr)
+{
+ return __raw_readl(addr);
+}
+
+static u64 flash_read64(void *addr)
+{
+ /* No architectures currently implement __raw_readq() */
+ return *(volatile u64 *)addr;
+}
/*-----------------------------------------------------------------------
- * Functions
*/
+#if defined(CFG_ENV_IS_IN_FLASH) || defined(CFG_ENV_ADDR_REDUND) || (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
+static flash_info_t *flash_get_info(ulong base)
+{
+ int i;
+ flash_info_t * info = 0;
-typedef unsigned long flash_sect_t;
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+ info = & flash_info[i];
+ if (info->size && info->start[0] <= base &&
+ base <= info->start[0] + info->size - 1)
+ break;
+ }
-static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c);
-static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf);
-static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
-static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect);
-static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
-static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
-static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
-static void flash_read_jedec_ids (flash_info_t * info);
-static int flash_detect_cfi (flash_info_t * info);
-static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword);
-static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
- ulong tout, char *prompt);
-ulong flash_get_size (ulong base, int banknum);
-#if defined(CFG_ENV_IS_IN_FLASH) || defined(CFG_ENV_ADDR_REDUND) || (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
-static flash_info_t *flash_get_info(ulong base);
-#endif
-#ifdef CFG_FLASH_USE_BUFFER_WRITE
-static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, int len);
+ return i == CFG_MAX_FLASH_BANKS ? 0 : info;
+}
#endif
+unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
+{
+ if (sect != (info->sector_count - 1))
+ return info->start[sect + 1] - info->start[sect];
+ else
+ return info->start[0] + info->size - info->start[sect];
+}
+
/*-----------------------------------------------------------------------
* create an address based on the offset and the port width
*/
-inline uchar *flash_make_addr (flash_info_t * info, flash_sect_t sect, uint offset)
+static inline void *
+flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
{
- return ((uchar *) (info->start[sect] + (offset * info->portwidth)));
+ unsigned int byte_offset = offset * info->portwidth;
+
+ return map_physmem(info->start[sect] + byte_offset,
+ flash_sector_size(info, sect) - byte_offset,
+ MAP_NOCACHE);
+}
+
+static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
+ unsigned int offset, void *addr)
+{
+ unsigned int byte_offset = offset * info->portwidth;
+
+ unmap_physmem(addr, flash_sector_size(info, sect) - byte_offset);
+}
+
+/*-----------------------------------------------------------------------
+ * make a proper sized command based on the port and chip widths
+ */
+static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf)
+{
+ int i;
+ uchar *cp = (uchar *) cmdbuf;
+
+#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
+ for (i = info->portwidth; i > 0; i--)
+#else
+ for (i = 1; i <= info->portwidth; i++)
+#endif
+ *cp++ = (i & (info->chipwidth - 1)) ? '\0' : cmd;
}
#ifdef DEBUG
/*-----------------------------------------------------------------------
* Debug support
*/
-void print_longlong (char *str, unsigned long long data)
+static void print_longlong (char *str, unsigned long long data)
{
int i;
char *cp;
@@ -224,28 +322,25 @@ void print_longlong (char *str, unsigned long long data)
for (i = 0; i < 8; i++)
sprintf (&str[i * 2], "%2.2x", *cp++);
}
-static void flash_printqry (flash_info_t * info, flash_sect_t sect)
+
+static void flash_printqry (struct cfi_qry *qry)
{
- cfiptr_t cptr;
+ u8 *p = (u8 *)qry;
int x, y;
- for (x = 0; x < 0x40; x += 16U / info->portwidth) {
- cptr.cp =
- flash_make_addr (info, sect,
- x + FLASH_OFFSET_CFI_RESP);
- debug ("%p : ", cptr.cp);
+ for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
+ debug("%02x : ", x);
+ for (y = 0; y < 16; y++)
+ debug("%2.2x ", p[x + y]);
+ debug(" ");
for (y = 0; y < 16; y++) {
- debug ("%2.2x ", cptr.cp[y]);
- }
- debug (" ");
- for (y = 0; y < 16; y++) {
- if (cptr.cp[y] >= 0x20 && cptr.cp[y] <= 0x7e) {
- debug ("%c", cptr.cp[y]);
- } else {
- debug (".");
- }
+ unsigned char c = p[x + y];
+ if (c >= 0x20 && c <= 0x7e)
+ debug("%c", c);
+ else
+ debug(".");
}
- debug ("\n");
+ debug("\n");
}
}
#endif
@@ -254,192 +349,608 @@ static void flash_printqry (flash_info_t * info, flash_sect_t sect)
/*-----------------------------------------------------------------------
* read a character at a port width address
*/
-inline uchar flash_read_uchar (flash_info_t * info, uint offset)
+static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
{
uchar *cp;
+ uchar retval;
- cp = flash_make_addr (info, 0, offset);
+ cp = flash_map (info, 0, offset);
#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
- return (cp[0]);
+ retval = flash_read8(cp);
#else
- return (cp[info->portwidth - 1]);
+ retval = flash_read8(cp + info->portwidth - 1);
#endif
+ flash_unmap (info, 0, offset, cp);
+ return retval;
}
/*-----------------------------------------------------------------------
- * read a short word by swapping for ppc format.
+ * read a long word by picking the least significant byte of each maximum
+ * port size word. Swap for ppc format.
*/
-ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset)
+static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
+ uint offset)
{
uchar *addr;
- ushort retval;
+ ulong retval;
#ifdef DEBUG
int x;
#endif
- addr = flash_make_addr (info, sect, offset);
+ addr = flash_map (info, sect, offset);
#ifdef DEBUG
- debug ("ushort addr is at %p info->portwidth = %d\n", addr,
+ debug ("long addr is at %p info->portwidth = %d\n", addr,
info->portwidth);
- for (x = 0; x < 2 * info->portwidth; x++) {
- debug ("addr[%x] = 0x%x\n", x, addr[x]);
+ for (x = 0; x < 4 * info->portwidth; x++) {
+ debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
}
#endif
#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
- retval = ((addr[(info->portwidth)] << 8) | addr[0]);
+ retval = ((flash_read8(addr) << 16) |
+ (flash_read8(addr + info->portwidth) << 24) |
+ (flash_read8(addr + 2 * info->portwidth)) |
+ (flash_read8(addr + 3 * info->portwidth) << 8));
#else
- retval = ((addr[(2 * info->portwidth) - 1] << 8) |
- addr[info->portwidth - 1]);
+ retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
+ (flash_read8(addr + info->portwidth - 1) << 16) |
+ (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
+ (flash_read8(addr + 3 * info->portwidth - 1)));
#endif
+ flash_unmap(info, sect, offset, addr);
- debug ("retval = 0x%x\n", retval);
return retval;
}
-/*-----------------------------------------------------------------------
- * read a long word by picking the least significant byte of each maximum
- * port size word. Swap for ppc format.
+/*
+ * Write a proper sized command to the correct address
*/
-ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset)
+static void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
+ uint offset, uchar cmd)
{
- uchar *addr;
- ulong retval;
+ void *addr;
+ cfiword_t cword;
+
+ addr = flash_map (info, sect, offset);
+ flash_make_cmd (info, cmd, &cword);
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
+ cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
+ flash_write8(cword.c, addr);
+ break;
+ case FLASH_CFI_16BIT:
+ debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
+ cmd, cword.w,
+ info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
+ flash_write16(cword.w, addr);
+ break;
+ case FLASH_CFI_32BIT:
+ debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr,
+ cmd, cword.l,
+ info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
+ flash_write32(cword.l, addr);
+ break;
+ case FLASH_CFI_64BIT:
#ifdef DEBUG
- int x;
+ {
+ char str[20];
+
+ print_longlong (str, cword.ll);
+
+ debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
+ addr, cmd, str,
+ info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
+ }
#endif
- addr = flash_make_addr (info, sect, offset);
+ flash_write64(cword.ll, addr);
+ break;
+ }
+
+ /* Ensure all the instructions are fully finished */
+ sync();
+
+ flash_unmap(info, sect, offset, addr);
+}
+static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
+{
+ flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
+ flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
+}
+
+/*-----------------------------------------------------------------------
+ */
+static int flash_isequal (flash_info_t * info, flash_sect_t sect,
+ uint offset, uchar cmd)
+{
+ void *addr;
+ cfiword_t cword;
+ int retval;
+
+ addr = flash_map (info, sect, offset);
+ flash_make_cmd (info, cmd, &cword);
+
+ debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ debug ("is= %x %x\n", flash_read8(addr), cword.c);
+ retval = (flash_read8(addr) == cword.c);
+ break;
+ case FLASH_CFI_16BIT:
+ debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w);
+ retval = (flash_read16(addr) == cword.w);
+ break;
+ case FLASH_CFI_32BIT:
+ debug ("is= %8.8lx %8.8lx\n", flash_read32(addr), cword.l);
+ retval = (flash_read32(addr) == cword.l);
+ break;
+ case FLASH_CFI_64BIT:
#ifdef DEBUG
- debug ("long addr is at %p info->portwidth = %d\n", addr,
- info->portwidth);
- for (x = 0; x < 4 * info->portwidth; x++) {
- debug ("addr[%x] = 0x%x\n", x, addr[x]);
- }
-#endif
-#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
- retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) |
- (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8);
-#else
- retval = (addr[(2 * info->portwidth) - 1] << 24) |
- (addr[(info->portwidth) - 1] << 16) |
- (addr[(4 * info->portwidth) - 1] << 8) |
- addr[(3 * info->portwidth) - 1];
+ {
+ char str1[20];
+ char str2[20];
+
+ print_longlong (str1, flash_read64(addr));
+ print_longlong (str2, cword.ll);
+ debug ("is= %s %s\n", str1, str2);
+ }
#endif
+ retval = (flash_read64(addr) == cword.ll);
+ break;
+ default:
+ retval = 0;
+ break;
+ }
+ flash_unmap(info, sect, offset, addr);
+
return retval;
}
+/*-----------------------------------------------------------------------
+ */
+static int flash_isset (flash_info_t * info, flash_sect_t sect,
+ uint offset, uchar cmd)
+{
+ void *addr;
+ cfiword_t cword;
+ int retval;
+
+ addr = flash_map (info, sect, offset);
+ flash_make_cmd (info, cmd, &cword);
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ retval = ((flash_read8(addr) & cword.c) == cword.c);
+ break;
+ case FLASH_CFI_16BIT:
+ retval = ((flash_read16(addr) & cword.w) == cword.w);
+ break;
+ case FLASH_CFI_32BIT:
+ retval = ((flash_read16(addr) & cword.l) == cword.l);
+ break;
+ case FLASH_CFI_64BIT:
+ retval = ((flash_read64(addr) & cword.ll) == cword.ll);
+ break;
+ default:
+ retval = 0;
+ break;
+ }
+ flash_unmap(info, sect, offset, addr);
+
+ return retval;
+}
/*-----------------------------------------------------------------------
*/
-unsigned long flash_init (void)
+static int flash_toggle (flash_info_t * info, flash_sect_t sect,
+ uint offset, uchar cmd)
{
- unsigned long size = 0;
- int i;
+ void *addr;
+ cfiword_t cword;
+ int retval;
-#ifdef CFG_FLASH_PROTECTION
- char *s = getenv("unlock");
+ addr = flash_map (info, sect, offset);
+ flash_make_cmd (info, cmd, &cword);
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ retval = ((flash_read8(addr) & cword.c) !=
+ (flash_read8(addr) & cword.c));
+ break;
+ case FLASH_CFI_16BIT:
+ retval = ((flash_read16(addr) & cword.w) !=
+ (flash_read16(addr) & cword.w));
+ break;
+ case FLASH_CFI_32BIT:
+ retval = ((flash_read32(addr) & cword.l) !=
+ (flash_read32(addr) & cword.l));
+ break;
+ case FLASH_CFI_64BIT:
+ retval = ((flash_read64(addr) & cword.ll) !=
+ (flash_read64(addr) & cword.ll));
+ break;
+ default:
+ retval = 0;
+ break;
+ }
+ flash_unmap(info, sect, offset, addr);
+
+ return retval;
+}
+
+/*
+ * flash_is_busy - check to see if the flash is busy
+ *
+ * This routine checks the status of the chip and returns true if the
+ * chip is busy.
+ */
+static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
+{
+ int retval;
+
+ switch (info->vendor) {
+ case CFI_CMDSET_INTEL_STANDARD:
+ case CFI_CMDSET_INTEL_EXTENDED:
+ retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
+ break;
+ case CFI_CMDSET_AMD_STANDARD:
+ case CFI_CMDSET_AMD_EXTENDED:
+#ifdef CONFIG_FLASH_CFI_LEGACY
+ case CFI_CMDSET_AMD_LEGACY:
#endif
+ retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
+ break;
+ default:
+ retval = 0;
+ }
+ debug ("flash_is_busy: %d\n", retval);
+ return retval;
+}
- /* Init: no FLASHes known */
- for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- size += flash_info[i].size = flash_get_size (bank_base[i], i);
- if (flash_info[i].flash_id == FLASH_UNKNOWN) {
-#ifndef CFG_FLASH_QUIET_TEST
- printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
- i+1, flash_info[i].size, flash_info[i].size << 20);
-#endif /* CFG_FLASH_QUIET_TEST */
- }
-#ifdef CFG_FLASH_PROTECTION
- else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
- /*
- * Only the U-Boot image and it's environment is protected,
- * all other sectors are unprotected (unlocked) if flash
- * hardware protection is used (CFG_FLASH_PROTECTION) and
- * the environment variable "unlock" is set to "yes".
- */
- if (flash_info[i].legacy_unlock) {
- int k;
+/*-----------------------------------------------------------------------
+ * wait for XSR.7 to be set. Time out with an error if it does not.
+ * This routine does not set the flash to read-array mode.
+ */
+static int flash_status_check (flash_info_t * info, flash_sect_t sector,
+ ulong tout, char *prompt)
+{
+ ulong start;
- /*
- * Disable legacy_unlock temporarily, since
- * flash_real_protect would relock all other sectors
- * again otherwise.
- */
- flash_info[i].legacy_unlock = 0;
+#if CFG_HZ != 1000
+ tout *= CFG_HZ/1000;
+#endif
- /*
- * Legacy unlocking (e.g. Intel J3) -> unlock only one
- * sector. This will unlock all sectors.
- */
- flash_real_protect (&flash_info[i], 0, 0);
+ /* Wait for command completion */
+ start = get_timer (0);
+ while (flash_is_busy (info, sector)) {
+ if (get_timer (start) > tout) {
+ printf ("Flash %s timeout at address %lx data %lx\n",
+ prompt, info->start[sector],
+ flash_read_long (info, sector, 0));
+ flash_write_cmd (info, sector, 0, info->cmd_reset);
+ return ERR_TIMOUT;
+ }
+ udelay (1); /* also triggers watchdog */
+ }
+ return ERR_OK;
+}
- flash_info[i].legacy_unlock = 1;
+/*-----------------------------------------------------------------------
+ * Wait for XSR.7 to be set, if it times out print an error, otherwise
+ * do a full status check.
+ *
+ * This routine sets the flash to read-array mode.
+ */
+static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
+ ulong tout, char *prompt)
+{
+ int retcode;
- /*
- * Manually mark other sectors as unlocked (unprotected)
- */
- for (k = 1; k < flash_info[i].sector_count; k++)
- flash_info[i].protect[k] = 0;
- } else {
- /*
- * No legancy unlocking -> unlock all sectors
- */
- flash_protect (FLAG_PROTECT_CLEAR,
- flash_info[i].start[0],
- flash_info[i].start[0] + flash_info[i].size - 1,
- &flash_info[i]);
+ retcode = flash_status_check (info, sector, tout, prompt);
+ switch (info->vendor) {
+ case CFI_CMDSET_INTEL_EXTENDED:
+ case CFI_CMDSET_INTEL_STANDARD:
+ if ((retcode == ERR_OK)
+ && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
+ retcode = ERR_INVAL;
+ printf ("Flash %s error at address %lx\n", prompt,
+ info->start[sector]);
+ if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
+ FLASH_STATUS_PSLBS)) {
+ puts ("Command Sequence Error.\n");
+ } else if (flash_isset (info, sector, 0,
+ FLASH_STATUS_ECLBS)) {
+ puts ("Block Erase Error.\n");
+ retcode = ERR_NOT_ERASED;
+ } else if (flash_isset (info, sector, 0,
+ FLASH_STATUS_PSLBS)) {
+ puts ("Locking Error\n");
+ }
+ if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
+ puts ("Block locked.\n");
+ retcode = ERR_PROTECTED;
}
+ if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
+ puts ("Vpp Low Error.\n");
}
-#endif /* CFG_FLASH_PROTECTION */
+ flash_write_cmd (info, sector, 0, info->cmd_reset);
+ break;
+ default:
+ break;
}
+ return retcode;
+}
- /* Monitor protection ON by default */
-#if (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
- flash_protect (FLAG_PROTECT_SET,
- CFG_MONITOR_BASE,
- CFG_MONITOR_BASE + monitor_flash_len - 1,
- flash_get_info(CFG_MONITOR_BASE));
+/*-----------------------------------------------------------------------
+ */
+static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
+{
+#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
+ unsigned short w;
+ unsigned int l;
+ unsigned long long ll;
#endif
- /* Environment protection ON by default */
-#ifdef CFG_ENV_IS_IN_FLASH
- flash_protect (FLAG_PROTECT_SET,
- CFG_ENV_ADDR,
- CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
- flash_get_info(CFG_ENV_ADDR));
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ cword->c = c;
+ break;
+ case FLASH_CFI_16BIT:
+#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
+ w = c;
+ w <<= 8;
+ cword->w = (cword->w >> 8) | w;
+#else
+ cword->w = (cword->w << 8) | c;
#endif
-
- /* Redundant environment protection ON by default */
-#ifdef CFG_ENV_ADDR_REDUND
- flash_protect (FLAG_PROTECT_SET,
- CFG_ENV_ADDR_REDUND,
- CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
- flash_get_info(CFG_ENV_ADDR_REDUND));
+ break;
+ case FLASH_CFI_32BIT:
+#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
+ l = c;
+ l <<= 24;
+ cword->l = (cword->l >> 8) | l;
+#else
+ cword->l = (cword->l << 8) | c;
#endif
- return (size);
+ break;
+ case FLASH_CFI_64BIT:
+#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
+ ll = c;
+ ll <<= 56;
+ cword->ll = (cword->ll >> 8) | ll;
+#else
+ cword->ll = (cword->ll << 8) | c;
+#endif
+ break;
+ }
+}
+
+/* loop through the sectors from the highest address when the passed
+ * address is greater or equal to the sector address we have a match
+ */
+static flash_sect_t find_sector (flash_info_t * info, ulong addr)
+{
+ flash_sect_t sector;
+
+ for (sector = info->sector_count - 1; sector >= 0; sector--) {
+ if (addr >= info->start[sector])
+ break;
+ }
+ return sector;
}
/*-----------------------------------------------------------------------
*/
-#if defined(CFG_ENV_IS_IN_FLASH) || defined(CFG_ENV_ADDR_REDUND) || (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
-static flash_info_t *flash_get_info(ulong base)
+static int flash_write_cfiword (flash_info_t * info, ulong dest,
+ cfiword_t cword)
{
- int i;
- flash_info_t * info = 0;
+ void *dstaddr;
+ int flag;
- for (i = 0; i < CFG_MAX_FLASH_BANKS; i ++) {
- info = & flash_info[i];
- if (info->size && info->start[0] <= base &&
- base <= info->start[0] + info->size - 1)
+ dstaddr = map_physmem(dest, info->portwidth, MAP_NOCACHE);
+
+ /* Check if Flash is (sufficiently) erased */
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
+ break;
+ case FLASH_CFI_16BIT:
+ flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
+ break;
+ case FLASH_CFI_32BIT:
+ flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
+ break;
+ case FLASH_CFI_64BIT:
+ flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
+ break;
+ default:
+ flag = 0;
+ break;
+ }
+ if (!flag) {
+ unmap_physmem(dstaddr, info->portwidth);
+ return 2;
+ }
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts ();
+
+ switch (info->vendor) {
+ case CFI_CMDSET_INTEL_EXTENDED:
+ case CFI_CMDSET_INTEL_STANDARD:
+ flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
+ flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
+ break;
+ case CFI_CMDSET_AMD_EXTENDED:
+ case CFI_CMDSET_AMD_STANDARD:
+#ifdef CONFIG_FLASH_CFI_LEGACY
+ case CFI_CMDSET_AMD_LEGACY:
+#endif
+ flash_unlock_seq (info, 0);
+ flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
+ break;
+ }
+
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ flash_write8(cword.c, dstaddr);
+ break;
+ case FLASH_CFI_16BIT:
+ flash_write16(cword.w, dstaddr);
+ break;
+ case FLASH_CFI_32BIT:
+ flash_write32(cword.l, dstaddr);
+ break;
+ case FLASH_CFI_64BIT:
+ flash_write64(cword.ll, dstaddr);
+ break;
+ }
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts ();
+
+ unmap_physmem(dstaddr, info->portwidth);
+
+ return flash_full_status_check (info, find_sector (info, dest),
+ info->write_tout, "write");
+}
+
+#ifdef CFG_FLASH_USE_BUFFER_WRITE
+
+static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
+ int len)
+{
+ flash_sect_t sector;
+ int cnt;
+ int retcode;
+ void *src = cp;
+ void *dst = map_physmem(dest, len, MAP_NOCACHE);
+
+ sector = find_sector (info, dest);
+
+ switch (info->vendor) {
+ case CFI_CMDSET_INTEL_STANDARD:
+ case CFI_CMDSET_INTEL_EXTENDED:
+ flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
+ flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
+ retcode = flash_status_check (info, sector,
+ info->buffer_write_tout,
+ "write to buffer");
+ if (retcode == ERR_OK) {
+ /* reduce the number of loops by the width of
+ * the port */
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ cnt = len;
+ break;
+ case FLASH_CFI_16BIT:
+ cnt = len >> 1;
+ break;
+ case FLASH_CFI_32BIT:
+ cnt = len >> 2;
+ break;
+ case FLASH_CFI_64BIT:
+ cnt = len >> 3;
+ break;
+ default:
+ retcode = ERR_INVAL;
+ goto out_unmap;
+ }
+ flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
+ while (cnt-- > 0) {
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ flash_write8(flash_read8(src), dst);
+ src += 1, dst += 1;
+ break;
+ case FLASH_CFI_16BIT:
+ flash_write16(flash_read16(src), dst);
+ src += 2, dst += 2;
+ break;
+ case FLASH_CFI_32BIT:
+ flash_write32(flash_read32(src), dst);
+ src += 4, dst += 4;
+ break;
+ case FLASH_CFI_64BIT:
+ flash_write64(flash_read64(src), dst);
+ src += 8, dst += 8;
+ break;
+ default:
+ retcode = ERR_INVAL;
+ goto out_unmap;
+ }
+ }
+ flash_write_cmd (info, sector, 0,
+ FLASH_CMD_WRITE_BUFFER_CONFIRM);
+ retcode = flash_full_status_check (
+ info, sector, info->buffer_write_tout,
+ "buffer write");
+ }
+
+ break;
+
+ case CFI_CMDSET_AMD_STANDARD:
+ case CFI_CMDSET_AMD_EXTENDED:
+ flash_unlock_seq(info,0);
+ flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_TO_BUFFER);
+
+ switch (info->portwidth) {
+ case FLASH_CFI_8BIT:
+ cnt = len;
+ flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
+ while (cnt-- > 0) {
+ flash_write8(flash_read8(src), dst);
+ src += 1, dst += 1;
+ }
break;
+ case FLASH_CFI_16BIT:
+ cnt = len >> 1;
+ flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
+ while (cnt-- > 0) {
+ flash_write16(flash_read16(src), dst);
+ src += 2, dst += 2;
+ }
+ break;
+ case FLASH_CFI_32BIT:
+ cnt = len >> 2;
+ flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
+ while (cnt-- > 0) {
+ flash_write32(flash_read32(src), dst);
+ src += 4, dst += 4;
+ }
+ break;
+ case FLASH_CFI_64BIT:
+ cnt = len >> 3;
+ flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
+ while (cnt-- > 0) {
+ flash_write64(flash_read64(src), dst);
+ src += 8, dst += 8;
+ }
+ break;
+ default:
+ retcode = ERR_INVAL;
+ goto out_unmap;
+ }
+
+ flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
+ retcode = flash_full_status_check (info, sector,
+ info->buffer_write_tout,
+ "buffer write");
+ break;
+
+ default:
+ debug ("Unknown Command Set\n");
+ retcode = ERR_INVAL;
+ break;
}
- return i == CFG_MAX_FLASH_BANKS ? 0 : info;
+out_unmap:
+ unmap_physmem(dst, len);
+ return retcode;
}
-#endif
+#endif /* CFG_FLASH_USE_BUFFER_WRITE */
+
/*-----------------------------------------------------------------------
*/
@@ -465,7 +976,8 @@ int flash_erase (flash_info_t * info, int s_first, int s_last)
}
}
if (prot) {
- printf ("- Warning: %d protected sectors will not be erased!\n", prot);
+ printf ("- Warning: %d protected sectors will not be erased!\n",
+ prot);
} else {
putc ('\n');
}
@@ -476,18 +988,33 @@ int flash_erase (flash_info_t * info, int s_first, int s_last)
switch (info->vendor) {
case CFI_CMDSET_INTEL_STANDARD:
case CFI_CMDSET_INTEL_EXTENDED:
- flash_write_cmd (info, sect, 0, FLASH_CMD_CLEAR_STATUS);
- flash_write_cmd (info, sect, 0, FLASH_CMD_BLOCK_ERASE);
- flash_write_cmd (info, sect, 0, FLASH_CMD_ERASE_CONFIRM);
+ flash_write_cmd (info, sect, 0,
+ FLASH_CMD_CLEAR_STATUS);
+ flash_write_cmd (info, sect, 0,
+ FLASH_CMD_BLOCK_ERASE);
+ flash_write_cmd (info, sect, 0,
+ FLASH_CMD_ERASE_CONFIRM);
break;
case CFI_CMDSET_AMD_STANDARD:
case CFI_CMDSET_AMD_EXTENDED:
flash_unlock_seq (info, sect);
- flash_write_cmd (info, sect, AMD_ADDR_ERASE_START,
- AMD_CMD_ERASE_START);
+ flash_write_cmd (info, sect,
+ info->addr_unlock1,
+ AMD_CMD_ERASE_START);
flash_unlock_seq (info, sect);
- flash_write_cmd (info, sect, 0, AMD_CMD_ERASE_SECTOR);
+ flash_write_cmd (info, sect, 0,
+ AMD_CMD_ERASE_SECTOR);
+ break;
+#ifdef CONFIG_FLASH_CFI_LEGACY
+ case CFI_CMDSET_AMD_LEGACY:
+ flash_unlock_seq (info, 0);
+ flash_write_cmd (info, 0, info->addr_unlock1,
+ AMD_CMD_ERASE_START);
+ flash_unlock_seq (info, 0);
+ flash_write_cmd (info, sect, 0,
+ AMD_CMD_ERASE_SECTOR);
break;
+#endif
default:
debug ("Unkown flash vendor %d\n",
info->vendor);
@@ -516,10 +1043,15 @@ void flash_print_info (flash_info_t * info)
return;
}
- printf ("CFI conformant FLASH (%d x %d)",
+ printf ("%s FLASH (%d x %d)",
+ info->name,
(info->portwidth << 3), (info->chipwidth << 3));
- printf (" Size: %ld MB in %d Sectors\n",
- info->size >> 20, info->sector_count);
+ if (info->size < 1024*1024)
+ printf (" Size: %ld kB in %d Sectors\n",
+ info->size >> 10, info->sector_count);
+ else
+ printf (" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, info->sector_count);
printf (" ");
switch (info->vendor) {
case CFI_CMDSET_INTEL_STANDARD:
@@ -534,6 +1066,11 @@ void flash_print_info (flash_info_t * info)
case CFI_CMDSET_AMD_EXTENDED:
printf ("AMD Extended");
break;
+#ifdef CONFIG_FLASH_CFI_LEGACY
+ case CFI_CMDSET_AMD_LEGACY:
+ printf ("AMD Legacy");
+ break;
+#endif
default:
printf ("Unknown (%d)", info->vendor);
break;
@@ -547,7 +1084,8 @@ void flash_print_info (flash_info_t * info)
info->erase_blk_tout,
info->write_tout);
if (info->buffer_size > 1) {
- printf (" Buffer write timeout: %ld ms, buffer size: %d bytes\n",
+ printf (" Buffer write timeout: %ld ms, "
+ "buffer size: %d bytes\n",
info->buffer_write_tout,
info->buffer_size);
}
@@ -565,10 +1103,7 @@ void flash_print_info (flash_info_t * info)
/*
* Check if whole sector is erased
*/
- if (i != (info->sector_count - 1))
- size = info->start[i + 1] - info->start[i];
- else
- size = info->start[0] + info->size - info->start[i];
+ size = flash_sector_size(info, i);
erased = 1;
flash = (volatile unsigned long *) info->start[i];
size = size >> 2; /* divide by 4 for longword access */
@@ -603,7 +1138,7 @@ void flash_print_info (flash_info_t * info)
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
ulong wp;
- ulong cp;
+ uchar *p;
int aln;
cfiword_t cword;
int i, rc;
@@ -612,26 +1147,28 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
int buffered_size;
#endif
/* get lower aligned address */
- /* get lower aligned address */
wp = (addr & ~(info->portwidth - 1));
/* handle unaligned start */
if ((aln = addr - wp) != 0) {
cword.l = 0;
- cp = wp;
- for (i = 0; i < aln; ++i, ++cp)
- flash_add_byte (info, &cword, (*(uchar *) cp));
+ p = map_physmem(wp, info->portwidth, MAP_NOCACHE);
+ for (i = 0; i < aln; ++i)
+ flash_add_byte (info, &cword, flash_read8(p + i));
for (; (i < info->portwidth) && (cnt > 0); i++) {
flash_add_byte (info, &cword, *src++);
cnt--;
- cp++;
}
- for (; (cnt == 0) && (i < info->portwidth); ++i, ++cp)
- flash_add_byte (info, &cword, (*(uchar *) cp));
- if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
+ for (; (cnt == 0) && (i < info->portwidth); ++i)
+ flash_add_byte (info, &cword, flash_read8(p + i));
+
+ rc = flash_write_cfiword (info, wp, cword);
+ unmap_physmem(p, info->portwidth);
+ if (rc != 0)
return rc;
- wp = cp;
+
+ wp += i;
}
/* handle the aligned part */
@@ -682,13 +1219,14 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
* handle unaligned tail bytes
*/
cword.l = 0;
- for (i = 0, cp = wp; (i < info->portwidth) && (cnt > 0); ++i, ++cp) {
+ p = map_physmem(wp, info->portwidth, MAP_NOCACHE);
+ for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
flash_add_byte (info, &cword, *src++);
--cnt;
}
- for (; i < info->portwidth; ++i, ++cp) {
- flash_add_byte (info, &cword, (*(uchar *) cp));
- }
+ for (; i < info->portwidth; ++i)
+ flash_add_byte (info, &cword, flash_read8(p + i));
+ unmap_physmem(p, info->portwidth);
return flash_write_cfiword (info, wp, cword);
}
@@ -740,10 +1278,11 @@ void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
uchar *dst;
dst = buffer;
- src = flash_make_addr (info, 0, FLASH_OFFSET_USER_PROTECTION);
+ src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
memcpy (dst, src + offset, len);
flash_write_cmd (info, 0, 0, info->cmd_reset);
+ flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
}
/*
@@ -754,418 +1293,310 @@ void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
{
uchar *src;
- src = flash_make_addr (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
+ src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
memcpy (buffer, src + offset, len);
flash_write_cmd (info, 0, 0, info->cmd_reset);
+ flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
}
#endif /* CFG_FLASH_PROTECTION */
-/*
- * flash_is_busy - check to see if the flash is busy
- * This routine checks the status of the chip and returns true if the chip is busy
+/*-----------------------------------------------------------------------
+ * Reverse the order of the erase regions in the CFI QRY structure.
+ * This is needed for chips that are either a) correctly detected as
+ * top-boot, or b) buggy.
*/
-static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
+static void cfi_reverse_geometry(struct cfi_qry *qry)
{
- int retval;
+ unsigned int i, j;
+ u32 tmp;
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- case CFI_CMDSET_INTEL_EXTENDED:
- retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
- break;
- case CFI_CMDSET_AMD_STANDARD:
- case CFI_CMDSET_AMD_EXTENDED:
- retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
- break;
- default:
- retval = 0;
+ for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
+ tmp = qry->erase_region_info[i];
+ qry->erase_region_info[i] = qry->erase_region_info[j];
+ qry->erase_region_info[j] = tmp;
}
- debug ("flash_is_busy: %d\n", retval);
- return retval;
}
/*-----------------------------------------------------------------------
- * wait for XSR.7 to be set. Time out with an error if it does not.
- * This routine does not set the flash to read-array mode.
+ * read jedec ids from device and set corresponding fields in info struct
+ *
+ * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
+ *
*/
-static int flash_status_check (flash_info_t * info, flash_sect_t sector,
- ulong tout, char *prompt)
+static void cmdset_intel_read_jedec_ids(flash_info_t *info)
{
- ulong start;
-
-#if CFG_HZ != 1000
- tout *= CFG_HZ/1000;
-#endif
-
- /* Wait for command completion */
- start = get_timer (0);
- while (flash_is_busy (info, sector)) {
- if (get_timer (start) > tout) {
- printf ("Flash %s timeout at address %lx data %lx\n",
- prompt, info->start[sector],
- flash_read_long (info, sector, 0));
- flash_write_cmd (info, sector, 0, info->cmd_reset);
- return ERR_TIMOUT;
- }
- udelay (1); /* also triggers watchdog */
- }
- return ERR_OK;
+ flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
+ flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
+ udelay(1000); /* some flash are slow to respond */
+ info->manufacturer_id = flash_read_uchar (info,
+ FLASH_OFFSET_MANUFACTURER_ID);
+ info->device_id = flash_read_uchar (info,
+ FLASH_OFFSET_DEVICE_ID);
+ flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
}
-/*-----------------------------------------------------------------------
- * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check.
- * This routine sets the flash to read-array mode.
- */
-static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
- ulong tout, char *prompt)
+static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
{
- int retcode;
+ info->cmd_reset = FLASH_CMD_RESET;
- retcode = flash_status_check (info, sector, tout, prompt);
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_EXTENDED:
- case CFI_CMDSET_INTEL_STANDARD:
- if ((retcode == ERR_OK)
- && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
- retcode = ERR_INVAL;
- printf ("Flash %s error at address %lx\n", prompt,
- info->start[sector]);
- if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) {
- puts ("Command Sequence Error.\n");
- } else if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS)) {
- puts ("Block Erase Error.\n");
- retcode = ERR_NOT_ERASED;
- } else if (flash_isset (info, sector, 0, FLASH_STATUS_PSLBS)) {
- puts ("Locking Error\n");
- }
- if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
- puts ("Block locked.\n");
- retcode = ERR_PROTECTED;
- }
- if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
- puts ("Vpp Low Error.\n");
- }
- flash_write_cmd (info, sector, 0, info->cmd_reset);
- break;
- default:
- break;
+ cmdset_intel_read_jedec_ids(info);
+ flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
+
+#ifdef CFG_FLASH_PROTECTION
+ /* read legacy lock/unlock bit from intel flash */
+ if (info->ext_addr) {
+ info->legacy_unlock = flash_read_uchar (info,
+ info->ext_addr + 5) & 0x08;
}
- return retcode;
+#endif
+
+ return 0;
}
-/*-----------------------------------------------------------------------
- */
-static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
+static void cmdset_amd_read_jedec_ids(flash_info_t *info)
{
-#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
- unsigned short w;
- unsigned int l;
- unsigned long long ll;
-#endif
-
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- cword->c = c;
- break;
- case FLASH_CFI_16BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
- w = c;
- w <<= 8;
- cword->w = (cword->w >> 8) | w;
-#else
- cword->w = (cword->w << 8) | c;
-#endif
- break;
- case FLASH_CFI_32BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
- l = c;
- l <<= 24;
- cword->l = (cword->l >> 8) | l;
-#else
- cword->l = (cword->l << 8) | c;
-#endif
- break;
- case FLASH_CFI_64BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
- ll = c;
- ll <<= 56;
- cword->ll = (cword->ll >> 8) | ll;
-#else
- cword->ll = (cword->ll << 8) | c;
-#endif
- break;
+ flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
+ flash_unlock_seq(info, 0);
+ flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
+ udelay(1000); /* some flash are slow to respond */
+ info->manufacturer_id = flash_read_uchar (info,
+ FLASH_OFFSET_MANUFACTURER_ID);
+ info->device_id = flash_read_uchar (info,
+ FLASH_OFFSET_DEVICE_ID);
+ if (info->device_id == 0x7E) {
+ /* AMD 3-byte (expanded) device ids */
+ info->device_id2 = flash_read_uchar (info,
+ FLASH_OFFSET_DEVICE_ID2);
+ info->device_id2 <<= 8;
+ info->device_id2 |= flash_read_uchar (info,
+ FLASH_OFFSET_DEVICE_ID3);
}
+ flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
}
-
-/*-----------------------------------------------------------------------
- * make a proper sized command based on the port and chip widths
- */
-static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf)
+static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
{
- int i;
- uchar *cp = (uchar *) cmdbuf;
+ info->cmd_reset = AMD_CMD_RESET;
-#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
- for (i = info->portwidth; i > 0; i--)
-#else
- for (i = 1; i <= info->portwidth; i++)
-#endif
- *cp++ = (i & (info->chipwidth - 1)) ? '\0' : cmd;
+ cmdset_amd_read_jedec_ids(info);
+ flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
+
+ return 0;
}
-/*
- * Write a proper sized command to the correct address
- */
-static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
+#ifdef CONFIG_FLASH_CFI_LEGACY
+static void flash_read_jedec_ids (flash_info_t * info)
{
+ info->manufacturer_id = 0;
+ info->device_id = 0;
+ info->device_id2 = 0;
- volatile cfiptr_t addr;
- cfiword_t cword;
-
- addr.cp = flash_make_addr (info, sect, offset);
- flash_make_cmd (info, cmd, &cword);
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr.cp, cmd,
- cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- *addr.cp = cword.c;
- break;
- case FLASH_CFI_16BIT:
- debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr.wp,
- cmd, cword.w,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- *addr.wp = cword.w;
+ switch (info->vendor) {
+ case CFI_CMDSET_INTEL_STANDARD:
+ case CFI_CMDSET_INTEL_EXTENDED:
+ flash_read_jedec_ids_intel(info);
break;
- case FLASH_CFI_32BIT:
- debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr.lp,
- cmd, cword.l,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- *addr.lp = cword.l;
+ case CFI_CMDSET_AMD_STANDARD:
+ case CFI_CMDSET_AMD_EXTENDED:
+ flash_read_jedec_ids_amd(info);
break;
- case FLASH_CFI_64BIT:
-#ifdef DEBUG
- {
- char str[20];
-
- print_longlong (str, cword.ll);
-
- debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
- addr.llp, cmd, str,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- }
-#endif
- *addr.llp = cword.ll;
+ default:
break;
}
-
- /* Ensure all the instructions are fully finished */
- sync();
-}
-
-static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
-{
- flash_write_cmd (info, sect, AMD_ADDR_START, AMD_CMD_UNLOCK_START);
- flash_write_cmd (info, sect, AMD_ADDR_ACK, AMD_CMD_UNLOCK_ACK);
}
/*-----------------------------------------------------------------------
+ * Call board code to request info about non-CFI flash.
+ * board_flash_get_legacy needs to fill in at least:
+ * info->portwidth, info->chipwidth and info->interface for Jedec probing.
*/
-static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
+static int flash_detect_legacy(ulong base, int banknum)
{
- cfiptr_t cptr;
- cfiword_t cword;
- int retval;
-
- cptr.cp = flash_make_addr (info, sect, offset);
- flash_make_cmd (info, cmd, &cword);
+ flash_info_t *info = &flash_info[banknum];
- debug ("is= cmd %x(%c) addr %p ", cmd, cmd, cptr.cp);
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- debug ("is= %x %x\n", cptr.cp[0], cword.c);
- retval = (cptr.cp[0] == cword.c);
- break;
- case FLASH_CFI_16BIT:
- debug ("is= %4.4x %4.4x\n", cptr.wp[0], cword.w);
- retval = (cptr.wp[0] == cword.w);
- break;
- case FLASH_CFI_32BIT:
- debug ("is= %8.8lx %8.8lx\n", cptr.lp[0], cword.l);
- retval = (cptr.lp[0] == cword.l);
- break;
- case FLASH_CFI_64BIT:
-#ifdef DEBUG
- {
- char str1[20];
- char str2[20];
+ if (board_flash_get_legacy(base, banknum, info)) {
+ /* board code may have filled info completely. If not, we
+ use JEDEC ID probing. */
+ if (!info->vendor) {
+ int modes[] = {
+ CFI_CMDSET_AMD_STANDARD,
+ CFI_CMDSET_INTEL_STANDARD
+ };
+ int i;
+
+ for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
+ info->vendor = modes[i];
+ info->start[0] = base;
+ if (info->portwidth == FLASH_CFI_8BIT
+ && info->interface == FLASH_CFI_X8X16) {
+ info->addr_unlock1 = 0x2AAA;
+ info->addr_unlock2 = 0x5555;
+ } else {
+ info->addr_unlock1 = 0x5555;
+ info->addr_unlock2 = 0x2AAA;
+ }
+ flash_read_jedec_ids(info);
+ debug("JEDEC PROBE: ID %x %x %x\n",
+ info->manufacturer_id,
+ info->device_id,
+ info->device_id2);
+ if (jedec_flash_match(info, base))
+ break;
+ }
+ }
- print_longlong (str1, cptr.llp[0]);
- print_longlong (str2, cword.ll);
- debug ("is= %s %s\n", str1, str2);
+ switch(info->vendor) {
+ case CFI_CMDSET_INTEL_STANDARD:
+ case CFI_CMDSET_INTEL_EXTENDED:
+ info->cmd_reset = FLASH_CMD_RESET;
+ break;
+ case CFI_CMDSET_AMD_STANDARD:
+ case CFI_CMDSET_AMD_EXTENDED:
+ case CFI_CMDSET_AMD_LEGACY:
+ info->cmd_reset = AMD_CMD_RESET;
+ break;
}
-#endif
- retval = (cptr.llp[0] == cword.ll);
- break;
- default:
- retval = 0;
- break;
+ info->flash_id = FLASH_MAN_CFI;
+ return 1;
}
- return retval;
+ return 0; /* use CFI */
}
-
-/*-----------------------------------------------------------------------
- */
-static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
+#else
+static inline int flash_detect_legacy(ulong base, int banknum)
{
- cfiptr_t cptr;
- cfiword_t cword;
- int retval;
-
- cptr.cp = flash_make_addr (info, sect, offset);
- flash_make_cmd (info, cmd, &cword);
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- retval = ((cptr.cp[0] & cword.c) == cword.c);
- break;
- case FLASH_CFI_16BIT:
- retval = ((cptr.wp[0] & cword.w) == cword.w);
- break;
- case FLASH_CFI_32BIT:
- retval = ((cptr.lp[0] & cword.l) == cword.l);
- break;
- case FLASH_CFI_64BIT:
- retval = ((cptr.llp[0] & cword.ll) == cword.ll);
- break;
- default:
- retval = 0;
- break;
- }
- return retval;
+ return 0; /* use CFI */
}
+#endif
/*-----------------------------------------------------------------------
+ * detect if flash is compatible with the Common Flash Interface (CFI)
+ * http://www.jedec.org/download/search/jesd68.pdf
*/
-static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
+static void flash_read_cfi (flash_info_t *info, void *buf,
+ unsigned int start, size_t len)
{
- cfiptr_t cptr;
- cfiword_t cword;
- int retval;
+ u8 *p = buf;
+ unsigned int i;
- cptr.cp = flash_make_addr (info, sect, offset);
- flash_make_cmd (info, cmd, &cword);
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- retval = ((cptr.cp[0] & cword.c) != (cptr.cp[0] & cword.c));
- break;
- case FLASH_CFI_16BIT:
- retval = ((cptr.wp[0] & cword.w) != (cptr.wp[0] & cword.w));
- break;
- case FLASH_CFI_32BIT:
- retval = ((cptr.lp[0] & cword.l) != (cptr.lp[0] & cword.l));
- break;
- case FLASH_CFI_64BIT:
- retval = ((cptr.llp[0] & cword.ll) !=
- (cptr.llp[0] & cword.ll));
- break;
- default:
- retval = 0;
- break;
- }
- return retval;
+ for (i = 0; i < len; i++)
+ p[i] = flash_read_uchar(info, start + i);
}
-/*-----------------------------------------------------------------------
- * read jedec ids from device and set corresponding fields in info struct
- *
- * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
- *
-*/
-static void flash_read_jedec_ids (flash_info_t * info)
+static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
{
- info->manufacturer_id = 0;
- info->device_id = 0;
- info->device_id2 = 0;
+ int cfi_offset;
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- case CFI_CMDSET_INTEL_EXTENDED:
- flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
- flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
- udelay(1000); /* some flash are slow to respond */
- info->manufacturer_id = flash_read_uchar (info,
- FLASH_OFFSET_MANUFACTURER_ID);
- info->device_id = flash_read_uchar (info,
- FLASH_OFFSET_DEVICE_ID);
- flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
- break;
- case CFI_CMDSET_AMD_STANDARD:
- case CFI_CMDSET_AMD_EXTENDED:
- flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
- flash_unlock_seq(info, 0);
- flash_write_cmd(info, 0, AMD_ADDR_START, FLASH_CMD_READ_ID);
- udelay(1000); /* some flash are slow to respond */
- info->manufacturer_id = flash_read_uchar (info,
- FLASH_OFFSET_MANUFACTURER_ID);
- info->device_id = flash_read_uchar (info,
- FLASH_OFFSET_DEVICE_ID);
- if (info->device_id == 0x7E) {
- /* AMD 3-byte (expanded) device ids */
- info->device_id2 = flash_read_uchar (info,
- FLASH_OFFSET_DEVICE_ID2);
- info->device_id2 <<= 8;
- info->device_id2 |= flash_read_uchar (info,
- FLASH_OFFSET_DEVICE_ID3);
+ flash_write_cmd (info, 0, 0, info->cmd_reset);
+ for (cfi_offset=0;
+ cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
+ cfi_offset++) {
+ flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
+ FLASH_CMD_CFI);
+ if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
+ && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
+ && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
+ flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
+ sizeof(struct cfi_qry));
+ info->interface = le16_to_cpu(qry->interface_desc);
+
+ info->cfi_offset = flash_offset_cfi[cfi_offset];
+ debug ("device interface is %d\n",
+ info->interface);
+ debug ("found port %d chip %d ",
+ info->portwidth, info->chipwidth);
+ debug ("port %d bits chip %d bits\n",
+ info->portwidth << CFI_FLASH_SHIFT_WIDTH,
+ info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
+
+ /* calculate command offsets as in the Linux driver */
+ info->addr_unlock1 = 0x555;
+ info->addr_unlock2 = 0x2aa;
+
+ /*
+ * modify the unlock address if we are
+ * in compatibility mode
+ */
+ if ( /* x8/x16 in x8 mode */
+ ((info->chipwidth == FLASH_CFI_BY8) &&
+ (info->interface == FLASH_CFI_X8X16)) ||
+ /* x16/x32 in x16 mode */
+ ((info->chipwidth == FLASH_CFI_BY16) &&
+ (info->interface == FLASH_CFI_X16X32)))
+ {
+ info->addr_unlock1 = 0xaaa;
+ info->addr_unlock2 = 0x555;
+ }
+
+ info->name = "CFI conformant";
+ return 1;
}
- flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
- break;
- default:
- break;
}
+
+ return 0;
}
-/*-----------------------------------------------------------------------
- * detect if flash is compatible with the Common Flash Interface (CFI)
- * http://www.jedec.org/download/search/jesd68.pdf
- *
-*/
-static int flash_detect_cfi (flash_info_t * info)
+static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
{
- int cfi_offset;
debug ("flash detect cfi\n");
for (info->portwidth = CFG_FLASH_CFI_WIDTH;
info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
for (info->chipwidth = FLASH_CFI_BY8;
info->chipwidth <= info->portwidth;
- info->chipwidth <<= 1) {
- flash_write_cmd (info, 0, 0, info->cmd_reset);
- for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi)/sizeof(uint); cfi_offset++) {
- flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], FLASH_CMD_CFI);
- if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
- && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
- && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
- info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE);
- info->cfi_offset=flash_offset_cfi[cfi_offset];
- debug ("device interface is %d\n",
- info->interface);
- debug ("found port %d chip %d ",
- info->portwidth, info->chipwidth);
- debug ("port %d bits chip %d bits\n",
- info->portwidth << CFI_FLASH_SHIFT_WIDTH,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- return 1;
- }
- }
- }
+ info->chipwidth <<= 1)
+ if (__flash_detect_cfi(info, qry))
+ return 1;
}
debug ("not found\n");
return 0;
}
/*
+ * Manufacturer-specific quirks. Add workarounds for geometry
+ * reversal, etc. here.
+ */
+static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
+{
+ /* check if flash geometry needs reversal */
+ if (qry->num_erase_regions > 1) {
+ /* reverse geometry if top boot part */
+ if (info->cfi_version < 0x3131) {
+ /* CFI < 1.1, try to guess from device id */
+ if ((info->device_id & 0x80) != 0)
+ cfi_reverse_geometry(qry);
+ } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
+ /* CFI >= 1.1, deduct from top/bottom flag */
+ /* note: ext_addr is valid since cfi_version > 0 */
+ cfi_reverse_geometry(qry);
+ }
+ }
+}
+
+static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
+{
+ int reverse_geometry = 0;
+
+ /* Check the "top boot" bit in the PRI */
+ if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
+ reverse_geometry = 1;
+
+ /* AT49BV6416(T) list the erase regions in the wrong order.
+ * However, the device ID is identical with the non-broken
+ * AT49BV642D since u-boot only reads the low byte (they
+ * differ in the high byte.) So leave out this fixup for now.
+ */
+#if 0
+ if (info->device_id == 0xd6 || info->device_id == 0xd2)
+ reverse_geometry = !reverse_geometry;
+#endif
+
+ if (reverse_geometry)
+ cfi_reverse_geometry(qry);
+}
+
+/*
* The following code cannot be run from FLASH!
*
*/
@@ -1180,7 +1611,7 @@ ulong flash_get_size (ulong base, int banknum)
uchar num_erase_regions;
int erase_region_size;
int erase_region_count;
- int geometry_reversed = 0;
+ struct cfi_qry qry;
info->ext_addr = 0;
info->cfi_version = 0;
@@ -1190,56 +1621,50 @@ ulong flash_get_size (ulong base, int banknum)
info->start[0] = base;
- if (flash_detect_cfi (info)) {
- info->vendor = flash_read_ushort (info, 0,
- FLASH_OFFSET_PRIMARY_VENDOR);
- flash_read_jedec_ids (info);
- flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI);
- num_erase_regions = flash_read_uchar (info,
- FLASH_OFFSET_NUM_ERASE_REGIONS);
- info->ext_addr = flash_read_ushort (info, 0,
- FLASH_OFFSET_EXT_QUERY_T_P_ADDR);
+ if (flash_detect_cfi (info, &qry)) {
+ info->vendor = le16_to_cpu(qry.p_id);
+ info->ext_addr = le16_to_cpu(qry.p_adr);
+ num_erase_regions = qry.num_erase_regions;
+
if (info->ext_addr) {
info->cfi_version = (ushort) flash_read_uchar (info,
info->ext_addr + 3) << 8;
info->cfi_version |= (ushort) flash_read_uchar (info,
info->ext_addr + 4);
}
+
#ifdef DEBUG
- flash_printqry (info, 0);
+ flash_printqry (&qry);
#endif
+
switch (info->vendor) {
case CFI_CMDSET_INTEL_STANDARD:
case CFI_CMDSET_INTEL_EXTENDED:
- default:
- info->cmd_reset = FLASH_CMD_RESET;
-#ifdef CFG_FLASH_PROTECTION
- /* read legacy lock/unlock bit from intel flash */
- if (info->ext_addr) {
- info->legacy_unlock = flash_read_uchar (info,
- info->ext_addr + 5) & 0x08;
- }
-#endif
+ cmdset_intel_init(info, &qry);
break;
case CFI_CMDSET_AMD_STANDARD:
case CFI_CMDSET_AMD_EXTENDED:
- info->cmd_reset = AMD_CMD_RESET;
- /* check if flash geometry needs reversal */
- if (num_erase_regions <= 1)
- break;
- /* reverse geometry if top boot part */
- if (info->cfi_version < 0x3131) {
- /* CFI < 1.1, try to guess from device id */
- if ((info->device_id & 0x80) != 0) {
- geometry_reversed = 1;
- }
- break;
- }
- /* CFI >= 1.1, deduct from top/bottom flag */
- /* note: ext_addr is valid since cfi_version > 0 */
- if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
- geometry_reversed = 1;
- }
+ cmdset_amd_init(info, &qry);
+ break;
+ default:
+ printf("CFI: Unknown command set 0x%x\n",
+ info->vendor);
+ /*
+ * Unfortunately, this means we don't know how
+ * to get the chip back to Read mode. Might
+ * as well try an Intel-style reset...
+ */
+ flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
+ return 0;
+ }
+
+ /* Do manufacturer-specific fixups */
+ switch (info->manufacturer_id) {
+ case 0x0001:
+ flash_fixup_amd(info, &qry);
+ break;
+ case 0x001f:
+ flash_fixup_atmel(info, &qry);
break;
}
@@ -1267,26 +1692,27 @@ ulong flash_get_size (ulong base, int banknum)
num_erase_regions, NUM_ERASE_REGIONS);
break;
}
- if (geometry_reversed)
- tmp = flash_read_long (info, 0,
- FLASH_OFFSET_ERASE_REGIONS +
- (num_erase_regions - 1 - i) * 4);
- else
- tmp = flash_read_long (info, 0,
- FLASH_OFFSET_ERASE_REGIONS +
- i * 4);
+
+ tmp = le32_to_cpu(qry.erase_region_info[i]);
+ debug("erase region %u: 0x%08lx\n", i, tmp);
+
+ erase_region_count = (tmp & 0xffff) + 1;
+ tmp >>= 16;
erase_region_size =
(tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
- tmp >>= 16;
- erase_region_count = (tmp & 0xffff) + 1;
debug ("erase_region_count = %d erase_region_size = %d\n",
erase_region_count, erase_region_size);
for (j = 0; j < erase_region_count; j++) {
+ if (sect_cnt >= CFG_MAX_FLASH_SECT) {
+ printf("ERROR: too many flash sectors\n");
+ break;
+ }
info->start[sect_cnt] = sector;
sector += (erase_region_size * size_ratio);
/*
- * Only read protection status from supported devices (intel...)
+ * Only read protection status from
+ * supported devices (intel...)
*/
switch (info->vendor) {
case CFI_CMDSET_INTEL_EXTENDED:
@@ -1297,7 +1723,8 @@ ulong flash_get_size (ulong base, int banknum)
FLASH_STATUS_PROTECT);
break;
default:
- info->protect[sect_cnt] = 0; /* default: not protected */
+ /* default: not protected */
+ info->protect[sect_cnt] = 0;
}
sect_cnt++;
@@ -1305,20 +1732,27 @@ ulong flash_get_size (ulong base, int banknum)
}
info->sector_count = sect_cnt;
+ info->size = 1 << qry.dev_size;
/* multiply the size by the number of chips */
- info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio;
- info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE));
- tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT);
- info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT)));
- tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT)) *
- (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT));
- info->buffer_write_tout = tmp / 1000 + (tmp % 1000 ? 1 : 0); /* round up when converting to ms */
- tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT)) *
- (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT));
- info->write_tout = tmp / 1000 + (tmp % 1000 ? 1 : 0); /* round up when converting to ms */
+ info->size *= size_ratio;
+ info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
+ tmp = 1 << qry.block_erase_timeout_typ;
+ info->erase_blk_tout = tmp *
+ (1 << qry.block_erase_timeout_max);
+ tmp = (1 << qry.buf_write_timeout_typ) *
+ (1 << qry.buf_write_timeout_max);
+
+ /* round up when converting to ms */
+ info->buffer_write_tout = (tmp + 999) / 1000;
+ tmp = (1 << qry.word_write_timeout_typ) *
+ (1 << qry.word_write_timeout_max);
+ /* round up when converting to ms */
+ info->write_tout = (tmp + 999) / 1000;
info->flash_id = FLASH_MAN_CFI;
- if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) {
- info->portwidth >>= 1; /* XXX - Need to test on x8/x16 in parallel. */
+ if ((info->interface == FLASH_CFI_X8X16) &&
+ (info->chipwidth == FLASH_CFI_BY8)) {
+ /* XXX - Need to test on x8/x16 in parallel. */
+ info->portwidth >>= 1;
}
}
@@ -1326,203 +1760,106 @@ ulong flash_get_size (ulong base, int banknum)
return (info->size);
}
-/* loop through the sectors from the highest address
- * when the passed address is greater or equal to the sector address
- * we have a match
- */
-static flash_sect_t find_sector (flash_info_t * info, ulong addr)
-{
- flash_sect_t sector;
-
- for (sector = info->sector_count - 1; sector >= 0; sector--) {
- if (addr >= info->start[sector])
- break;
- }
- return sector;
-}
-
/*-----------------------------------------------------------------------
*/
-static int flash_write_cfiword (flash_info_t * info, ulong dest,
- cfiword_t cword)
+unsigned long flash_init (void)
{
- cfiptr_t ctladdr;
- cfiptr_t cptr;
- int flag;
-
- ctladdr.cp = flash_make_addr (info, 0, 0);
- cptr.cp = (uchar *) dest;
-
- /* Check if Flash is (sufficiently) erased */
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- flag = ((cptr.cp[0] & cword.c) == cword.c);
- break;
- case FLASH_CFI_16BIT:
- flag = ((cptr.wp[0] & cword.w) == cword.w);
- break;
- case FLASH_CFI_32BIT:
- flag = ((cptr.lp[0] & cword.l) == cword.l);
- break;
- case FLASH_CFI_64BIT:
- flag = ((cptr.llp[0] & cword.ll) == cword.ll);
- break;
- default:
- return 2;
- }
- if (!flag)
- return 2;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts ();
+ unsigned long size = 0;
+ int i;
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_EXTENDED:
- case CFI_CMDSET_INTEL_STANDARD:
- flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
- flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
- break;
- case CFI_CMDSET_AMD_EXTENDED:
- case CFI_CMDSET_AMD_STANDARD:
- flash_unlock_seq (info, 0);
- flash_write_cmd (info, 0, AMD_ADDR_START, AMD_CMD_WRITE);
- break;
- }
+#ifdef CFG_FLASH_PROTECTION
+ char *s = getenv("unlock");
+#endif
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- cptr.cp[0] = cword.c;
- break;
- case FLASH_CFI_16BIT:
- cptr.wp[0] = cword.w;
- break;
- case FLASH_CFI_32BIT:
- cptr.lp[0] = cword.l;
- break;
- case FLASH_CFI_64BIT:
- cptr.llp[0] = cword.ll;
- break;
- }
+ /* Init: no FLASHes known */
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
+ flash_info[i].flash_id = FLASH_UNKNOWN;
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
+ if (!flash_detect_legacy (bank_base[i], i))
+ flash_get_size (bank_base[i], i);
+ size += flash_info[i].size;
+ if (flash_info[i].flash_id == FLASH_UNKNOWN) {
+#ifndef CFG_FLASH_QUIET_TEST
+ printf ("## Unknown FLASH on Bank %d "
+ "- Size = 0x%08lx = %ld MB\n",
+ i+1, flash_info[i].size,
+ flash_info[i].size << 20);
+#endif /* CFG_FLASH_QUIET_TEST */
+ }
+#ifdef CFG_FLASH_PROTECTION
+ else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
+ /*
+ * Only the U-Boot image and it's environment
+ * is protected, all other sectors are
+ * unprotected (unlocked) if flash hardware
+ * protection is used (CFG_FLASH_PROTECTION)
+ * and the environment variable "unlock" is
+ * set to "yes".
+ */
+ if (flash_info[i].legacy_unlock) {
+ int k;
- return flash_full_status_check (info, find_sector (info, dest),
- info->write_tout, "write");
-}
+ /*
+ * Disable legacy_unlock temporarily,
+ * since flash_real_protect would
+ * relock all other sectors again
+ * otherwise.
+ */
+ flash_info[i].legacy_unlock = 0;
-#ifdef CFG_FLASH_USE_BUFFER_WRITE
+ /*
+ * Legacy unlocking (e.g. Intel J3) ->
+ * unlock only one sector. This will
+ * unlock all sectors.
+ */
+ flash_real_protect (&flash_info[i], 0, 0);
-static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
- int len)
-{
- flash_sect_t sector;
- int cnt;
- int retcode;
- volatile cfiptr_t src;
- volatile cfiptr_t dst;
+ flash_info[i].legacy_unlock = 1;
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- case CFI_CMDSET_INTEL_EXTENDED:
- src.cp = cp;
- dst.cp = (uchar *) dest;
- sector = find_sector (info, dest);
- flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
- flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
- if ((retcode = flash_status_check (info, sector, info->buffer_write_tout,
- "write to buffer")) == ERR_OK) {
- /* reduce the number of loops by the width of the port */
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- cnt = len;
- break;
- case FLASH_CFI_16BIT:
- cnt = len >> 1;
- break;
- case FLASH_CFI_32BIT:
- cnt = len >> 2;
- break;
- case FLASH_CFI_64BIT:
- cnt = len >> 3;
- break;
- default:
- return ERR_INVAL;
- break;
- }
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) {
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- *dst.cp++ = *src.cp++;
- break;
- case FLASH_CFI_16BIT:
- *dst.wp++ = *src.wp++;
- break;
- case FLASH_CFI_32BIT:
- *dst.lp++ = *src.lp++;
- break;
- case FLASH_CFI_64BIT:
- *dst.llp++ = *src.llp++;
- break;
- default:
- return ERR_INVAL;
- break;
- }
+ /*
+ * Manually mark other sectors as
+ * unlocked (unprotected)
+ */
+ for (k = 1; k < flash_info[i].sector_count; k++)
+ flash_info[i].protect[k] = 0;
+ } else {
+ /*
+ * No legancy unlocking -> unlock all sectors
+ */
+ flash_protect (FLAG_PROTECT_CLEAR,
+ flash_info[i].start[0],
+ flash_info[i].start[0]
+ + flash_info[i].size - 1,
+ &flash_info[i]);
}
- flash_write_cmd (info, sector, 0,
- FLASH_CMD_WRITE_BUFFER_CONFIRM);
- retcode = flash_full_status_check (info, sector,
- info->buffer_write_tout,
- "buffer write");
}
- return retcode;
-
- case CFI_CMDSET_AMD_STANDARD:
- case CFI_CMDSET_AMD_EXTENDED:
- src.cp = cp;
- dst.cp = (uchar *) dest;
- sector = find_sector (info, dest);
-
- flash_unlock_seq(info,0);
- flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_TO_BUFFER);
+#endif /* CFG_FLASH_PROTECTION */
+ }
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- cnt = len;
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) *dst.cp++ = *src.cp++;
- break;
- case FLASH_CFI_16BIT:
- cnt = len >> 1;
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) *dst.wp++ = *src.wp++;
- break;
- case FLASH_CFI_32BIT:
- cnt = len >> 2;
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) *dst.lp++ = *src.lp++;
- break;
- case FLASH_CFI_64BIT:
- cnt = len >> 3;
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) *dst.llp++ = *src.llp++;
- break;
- default:
- return ERR_INVAL;
- }
+ /* Monitor protection ON by default */
+#if (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
+ flash_protect (FLAG_PROTECT_SET,
+ CFG_MONITOR_BASE,
+ CFG_MONITOR_BASE + monitor_flash_len - 1,
+ flash_get_info(CFG_MONITOR_BASE));
+#endif
- flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
- retcode = flash_full_status_check (info, sector, info->buffer_write_tout,
- "buffer write");
- return retcode;
+ /* Environment protection ON by default */
+#ifdef CFG_ENV_IS_IN_FLASH
+ flash_protect (FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
+ flash_get_info(CFG_ENV_ADDR));
+#endif
- default:
- debug ("Unknown Command Set\n");
- return ERR_INVAL;
- }
+ /* Redundant environment protection ON by default */
+#ifdef CFG_ENV_ADDR_REDUND
+ flash_protect (FLAG_PROTECT_SET,
+ CFG_ENV_ADDR_REDUND,
+ CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
+ flash_get_info(CFG_ENV_ADDR_REDUND));
+#endif
+ return (size);
}
-#endif /* CFG_FLASH_USE_BUFFER_WRITE */
#endif /* CFG_FLASH_CFI */
diff --git a/drivers/mtd/jedec_flash.c b/drivers/mtd/jedec_flash.c
new file mode 100644
index 0000000000..94e87cbf00
--- /dev/null
+++ b/drivers/mtd/jedec_flash.c
@@ -0,0 +1,311 @@
+/*
+ * (C) Copyright 2007
+ * Michael Schwingen, <michael@schwingen.org>
+ *
+ * based in great part on jedec_probe.c from linux kernel:
+ * (C) 2000 Red Hat. GPL'd.
+ * Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com
+ *
+ * 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
+ *
+ */
+
+/* The DEBUG define must be before common to enable debugging */
+/*#define DEBUG*/
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/byteorder.h>
+#include <environment.h>
+
+#define P_ID_AMD_STD CFI_CMDSET_AMD_LEGACY
+
+/* Manufacturers */
+#define MANUFACTURER_AMD 0x0001
+#define MANUFACTURER_SST 0x00BF
+
+/* AMD */
+#define AM29DL800BB 0x22C8
+#define AM29DL800BT 0x224A
+
+#define AM29F800BB 0x2258
+#define AM29F800BT 0x22D6
+#define AM29LV400BB 0x22BA
+#define AM29LV400BT 0x22B9
+#define AM29LV800BB 0x225B
+#define AM29LV800BT 0x22DA
+#define AM29LV160DT 0x22C4
+#define AM29LV160DB 0x2249
+#define AM29F017D 0x003D
+#define AM29F016D 0x00AD
+#define AM29F080 0x00D5
+#define AM29F040 0x00A4
+#define AM29LV040B 0x004F
+#define AM29F032B 0x0041
+#define AM29F002T 0x00B0
+
+/* SST */
+#define SST39LF800 0x2781
+#define SST39LF160 0x2782
+#define SST39VF1601 0x234b
+#define SST39LF512 0x00D4
+#define SST39LF010 0x00D5
+#define SST39LF020 0x00D6
+#define SST39LF040 0x00D7
+#define SST39SF010A 0x00B5
+#define SST39SF020A 0x00B6
+
+
+/*
+ * Unlock address sets for AMD command sets.
+ * Intel command sets use the MTD_UADDR_UNNECESSARY.
+ * Each identifier, except MTD_UADDR_UNNECESSARY, and
+ * MTD_UADDR_NO_SUPPORT must be defined below in unlock_addrs[].
+ * MTD_UADDR_NOT_SUPPORTED must be 0 so that structure
+ * initialization need not require initializing all of the
+ * unlock addresses for all bit widths.
+ */
+enum uaddr {
+ MTD_UADDR_NOT_SUPPORTED = 0, /* data width not supported */
+ MTD_UADDR_0x0555_0x02AA,
+ MTD_UADDR_0x0555_0x0AAA,
+ MTD_UADDR_0x5555_0x2AAA,
+ MTD_UADDR_0x0AAA_0x0555,
+ MTD_UADDR_DONT_CARE, /* Requires an arbitrary address */
+ MTD_UADDR_UNNECESSARY, /* Does not require any address */
+};
+
+
+struct unlock_addr {
+ u32 addr1;
+ u32 addr2;
+};
+
+
+/*
+ * I don't like the fact that the first entry in unlock_addrs[]
+ * exists, but is for MTD_UADDR_NOT_SUPPORTED - and, therefore,
+ * should not be used. The problem is that structures with
+ * initializers have extra fields initialized to 0. It is _very_
+ * desireable to have the unlock address entries for unsupported
+ * data widths automatically initialized - that means that
+ * MTD_UADDR_NOT_SUPPORTED must be 0 and the first entry here
+ * must go unused.
+ */
+static const struct unlock_addr unlock_addrs[] = {
+ [MTD_UADDR_NOT_SUPPORTED] = {
+ .addr1 = 0xffff,
+ .addr2 = 0xffff
+ },
+
+ [MTD_UADDR_0x0555_0x02AA] = {
+ .addr1 = 0x0555,
+ .addr2 = 0x02aa
+ },
+
+ [MTD_UADDR_0x0555_0x0AAA] = {
+ .addr1 = 0x0555,
+ .addr2 = 0x0aaa
+ },
+
+ [MTD_UADDR_0x5555_0x2AAA] = {
+ .addr1 = 0x5555,
+ .addr2 = 0x2aaa
+ },
+
+ [MTD_UADDR_0x0AAA_0x0555] = {
+ .addr1 = 0x0AAA,
+ .addr2 = 0x0555
+ },
+
+ [MTD_UADDR_DONT_CARE] = {
+ .addr1 = 0x0000, /* Doesn't matter which address */
+ .addr2 = 0x0000 /* is used - must be last entry */
+ },
+
+ [MTD_UADDR_UNNECESSARY] = {
+ .addr1 = 0x0000,
+ .addr2 = 0x0000
+ }
+};
+
+
+struct amd_flash_info {
+ const __u16 mfr_id;
+ const __u16 dev_id;
+ const char *name;
+ const int DevSize;
+ const int NumEraseRegions;
+ const int CmdSet;
+ const __u8 uaddr[4]; /* unlock addrs for 8, 16, 32, 64 */
+ const ulong regions[6];
+};
+
+#define ERASEINFO(size,blocks) (size<<8)|(blocks-1)
+
+#define SIZE_64KiB 16
+#define SIZE_128KiB 17
+#define SIZE_256KiB 18
+#define SIZE_512KiB 19
+#define SIZE_1MiB 20
+#define SIZE_2MiB 21
+#define SIZE_4MiB 22
+#define SIZE_8MiB 23
+
+static const struct amd_flash_info jedec_table[] = {
+#ifdef CFG_FLASH_LEGACY_256Kx8
+ {
+ .mfr_id = MANUFACTURER_SST,
+ .dev_id = SST39LF020,
+ .name = "SST 39LF020",
+ .uaddr = {
+ [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
+ },
+ .DevSize = SIZE_256KiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ ERASEINFO(0x01000,64),
+ }
+ },
+#endif
+#ifdef CFG_FLASH_LEGACY_512Kx8
+ {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29LV040B,
+ .name = "AMD AM29LV040B",
+ .uaddr = {
+ [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ ERASEINFO(0x10000,8),
+ }
+ },
+ {
+ .mfr_id = MANUFACTURER_SST,
+ .dev_id = SST39LF040,
+ .name = "SST 39LF040",
+ .uaddr = {
+ [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ ERASEINFO(0x01000,128),
+ }
+ },
+#endif
+};
+
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+
+static inline void fill_info(flash_info_t *info, const struct amd_flash_info *jedec_entry, ulong base)
+{
+ int i,j;
+ int sect_cnt;
+ int size_ratio;
+ int total_size;
+ enum uaddr uaddr_idx;
+
+ size_ratio = info->portwidth / info->chipwidth;
+
+ debug("Found JEDEC Flash: %s\n", jedec_entry->name);
+ info->vendor = jedec_entry->CmdSet;
+ /* Todo: do we need device-specific timeouts? */
+ info->erase_blk_tout = 30000;
+ info->buffer_write_tout = 1000;
+ info->write_tout = 100;
+ info->name = jedec_entry->name;
+
+ /* copy unlock addresses from device table to CFI info struct. This
+ is just here because the addresses are in the table anyway - if
+ the flash is not detected due to wrong unlock addresses,
+ flash_detect_legacy would have to try all of them before we even
+ get here. */
+ switch(info->chipwidth) {
+ case FLASH_CFI_8BIT:
+ uaddr_idx = jedec_entry->uaddr[0];
+ break;
+ case FLASH_CFI_16BIT:
+ uaddr_idx = jedec_entry->uaddr[1];
+ break;
+ case FLASH_CFI_32BIT:
+ uaddr_idx = jedec_entry->uaddr[2];
+ break;
+ default:
+ uaddr_idx = MTD_UADDR_NOT_SUPPORTED;
+ break;
+ }
+
+ debug("unlock address index %d\n", uaddr_idx);
+ info->addr_unlock1 = unlock_addrs[uaddr_idx].addr1;
+ info->addr_unlock2 = unlock_addrs[uaddr_idx].addr2;
+ debug("unlock addresses are 0x%x/0x%x\n", info->addr_unlock1, info->addr_unlock2);
+
+ sect_cnt = 0;
+ total_size = 0;
+ for (i = 0; i < jedec_entry->NumEraseRegions; i++) {
+ ulong erase_region_size = jedec_entry->regions[i] >> 8;
+ ulong erase_region_count = (jedec_entry->regions[i] & 0xff) + 1;
+
+ total_size += erase_region_size * erase_region_count;
+ debug ("erase_region_count = %d erase_region_size = %d\n",
+ erase_region_count, erase_region_size);
+ for (j = 0; j < erase_region_count; j++) {
+ if (sect_cnt >= CFG_MAX_FLASH_SECT) {
+ printf("ERROR: too many flash sectors\n");
+ break;
+ }
+ info->start[sect_cnt] = base;
+ base += (erase_region_size * size_ratio);
+ sect_cnt++;
+ }
+ }
+ info->sector_count = sect_cnt;
+ info->size = total_size * size_ratio;
+}
+
+/*-----------------------------------------------------------------------
+ * match jedec ids against table. If a match is found, fill flash_info entry
+ */
+int jedec_flash_match(flash_info_t *info, ulong base)
+{
+ int ret = 0;
+ int i;
+ ulong mask = 0xFFFF;
+ if (info->chipwidth == 1)
+ mask = 0xFF;
+
+ for (i = 0; i < ARRAY_SIZE(jedec_table); i++) {
+ if ((jedec_table[i].mfr_id & mask) == (info->manufacturer_id & mask) &&
+ (jedec_table[i].dev_id & mask) == (info->device_id & mask)) {
+ fill_info(info, &jedec_table[i], base);
+ ret = 1;
+ break;
+ }
+ }
+ return ret;
+}
generated by cgit (git 2.34.1) at 2024-12-26 11:38:50 +0000