[U-Boot-Users] RFC on davinci Nand support changes
Troy Kisky
troy.kisky at boundarydevices.com
Tue Sep 25 03:10:45 CEST 2007
This patch fixes Nand largepage support for Davinci
Changes the ecc values stored in the spare bytes so that
an erased block does not contain ecc errors.
The ecc correction function is much easier to read.
Chip select other than CS2 should also work now but not tested.
The bus width now comes from the EM_WIDTH pin.
Normal gpio may be used for EM_WAIT function.
What I mainly want commented on is whether we should emulate software
ECC for the hardware ecc as the hardware is flexible. I think it would
be nice to use 8 - 256 byte eccs instead of 4 - 512 byte eccs. But I haven't
changed that yet. I sent this to the davinci mailing list, but didn't get much
interest.
Linux must be modified to match the ecc if it will
read blocks that u-boot writes
diff --git a/cpu/arm926ejs/davinci/nand.c b/cpu/arm926ejs/davinci/nand.c
index 127be9f..2fecaed 100644
--- a/cpu/arm926ejs/davinci/nand.c
+++ b/cpu/arm926ejs/davinci/nand.c
@@ -52,32 +52,35 @@
extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
-static void nand_davinci_hwcontrol(struct mtd_info *mtd, int cmd)
-{
- struct nand_chip *this = mtd->priv;
- u_int32_t IO_ADDR_W = (u_int32_t)this->IO_ADDR_W;
- IO_ADDR_W &= ~(MASK_ALE|MASK_CLE);
+unsigned char nandCtlSetClr[] = {
+ 0x00, /*1 - NAND_CTL_SETNCE, 2 - NAND_CTL_CLRNCE, Select/Deselect Chip Select (nCE) */
+ MASK_CLE, /*3 - NAND_CTL_SETCLE, 4 - NAND_CTL_CLRCLE, Select/Deselect the command latch (CLE) */
+ MASK_ALE, /*5 - NAND_CTL_SETALE, 6 - NAND_CTL_CLRALE, Select/Deselect the address latch (ALE) */
+ 0x00, /*7 - NAND_CTL_SETWP, 8 - NAND_CTL_CLRWP, Set/Clear write protection (WP) Not used! */
+};
- switch (cmd) {
- case NAND_CTL_SETCLE:
- IO_ADDR_W |= MASK_CLE;
- break;
- case NAND_CTL_SETALE:
- IO_ADDR_W |= MASK_ALE;
- break;
+static void nand_davinci_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+ cmd--;
+ if ((cmd>=0)&&(cmd<8)) {
+ struct nand_chip *nand = mtd->priv;
+ u_int32_t addr = (u_int32_t)nand->IO_ADDR_W;
+ if (cmd&1) addr &= ~nandCtlSetClr[cmd>>1];
+ else addr |= nandCtlSetClr[cmd>>1];
+ nand->IO_ADDR_W = (void *)addr;
+ } else {
+ DEBUG (MTD_DEBUG_LEVEL0, "Invalid command 0x%x\n",cmd+1);
}
-
- this->IO_ADDR_W = (void *)IO_ADDR_W;
}
/* Set WP on deselect, write enable on select */
static void nand_davinci_select_chip(struct mtd_info *mtd, int chip)
{
+#ifdef SONATA_BOARD_GPIOWP
#define GPIO_SET_DATA01 0x01c67018
#define GPIO_CLR_DATA01 0x01c6701c
#define GPIO_NAND_WP (1 << 4)
-#ifdef SONATA_BOARD_GPIOWP
if (chip < 0) {
REG(GPIO_CLR_DATA01) |= GPIO_NAND_WP;
} else {
@@ -91,232 +94,217 @@ static void nand_davinci_select_chip(struct mtd_info *mtd, int chip)
static struct nand_oobinfo davinci_nand_oobinfo = {
.useecc = MTD_NANDECC_AUTOPLACE,
.eccbytes = 12,
+#if 1
.eccpos = {8, 9, 10, 24, 25, 26, 40, 41, 42, 56, 57, 58},
- .oobfree = { {2, 6}, {12, 12}, {28, 12}, {44, 12}, {60, 4} }
+ /* The 1st two bytes of spare are reserved for factory bad block markers */
+ .oobfree = { {2, 6}, {11, 13}, {27, 13}, {43, 13}, {59, 5} }
+#else
+ /* I would prefer this format, or the software format with 8 eccs in 256 byte groups (nand_oob_64 in nand_base), what do you think? */
+ .eccpos = {2,3,4, 5,6,7, 8,9,10, 11,12,13},
+ /* The 1st two bytes of spare are reserved for factory bad block markers */
+ .oobfree = { {14, 50} }
+#endif
};
#elif defined(CFG_NAND_SMALLPAGE)
static struct nand_oobinfo davinci_nand_oobinfo = {
.useecc = MTD_NANDECC_AUTOPLACE,
.eccbytes = 3,
.eccpos = {0, 1, 2},
- .oobfree = { {6, 2}, {8, 8} }
+ .oobfree = { {6, 10} }
};
#else
#error "Either CFG_NAND_LARGEPAGE or CFG_NAND_SMALLPAGE must be defined!"
#endif
-static void nand_davinci_enable_hwecc(struct mtd_info *mtd, int mode)
-{
- emifregs emif_addr;
- int dummy;
-
- emif_addr = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE;
-
- dummy = emif_addr->NANDF1ECC;
- dummy = emif_addr->NANDF2ECC;
- dummy = emif_addr->NANDF3ECC;
- dummy = emif_addr->NANDF4ECC;
- emif_addr->NANDFCR |= (1 << 8);
-}
-
-static u_int32_t nand_davinci_readecc(struct mtd_info *mtd, u_int32_t region)
+static u_int32_t nand_davinci_readecc(struct mtd_info *mtd, u_int32_t chipNum)
{
u_int32_t ecc = 0;
emifregs emif_base_addr;
emif_base_addr = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE;
-
- if (region == 1)
- ecc = emif_base_addr->NANDF1ECC;
- else if (region == 2)
- ecc = emif_base_addr->NANDF2ECC;
- else if (region == 3)
- ecc = emif_base_addr->NANDF3ECC;
- else if (region == 4)
- ecc = emif_base_addr->NANDF4ECC;
-
+ ecc = emif_base_addr->NANDF_ECC[chipNum];
return(ecc);
}
-
-static int nand_davinci_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
-{
- u_int32_t tmp;
- int region, n;
- struct nand_chip *this = mtd->priv;
-
- n = (this->eccmode == NAND_ECC_HW12_2048) ? 4 : 1;
-
- region = 1;
- while (n--) {
- tmp = nand_davinci_readecc(mtd, region);
- *ecc_code++ = tmp;
- *ecc_code++ = tmp >> 16;
- *ecc_code++ = ((tmp >> 8) & 0x0f) | ((tmp >> 20) & 0xf0);
- region++;
- }
- return(0);
-}
-
-static void nand_davinci_gen_true_ecc(u_int8_t *ecc_buf)
+static void nand_davinci_enable_hwecc(struct mtd_info *mtd, int mode)
{
- u_int32_t tmp = ecc_buf[0] | (ecc_buf[1] << 16) | ((ecc_buf[2] & 0xf0) << 20) | ((ecc_buf[2] & 0x0f) << 8);
+ struct nand_chip *nand = mtd->priv;
+ u_int32_t addr = (u_int32_t)nand->IO_ADDR_R;
+ u_int32_t chipNum=(addr-CFG_NAND_BASE)>>25; /* 0 - cs2, 1 - cs3, 2 - cs4, 3 - cs5 */
+ emifregs emif_addr;
+ int dummy;
+ if (chipNum>=4) return;
- ecc_buf[0] = ~(P64o(tmp) | P64e(tmp) | P32o(tmp) | P32e(tmp) | P16o(tmp) | P16e(tmp) | P8o(tmp) | P8e(tmp));
- ecc_buf[1] = ~(P1024o(tmp) | P1024e(tmp) | P512o(tmp) | P512e(tmp) | P256o(tmp) | P256e(tmp) | P128o(tmp) | P128e(tmp));
- ecc_buf[2] = ~( P4o(tmp) | P4e(tmp) | P2o(tmp) | P2e(tmp) | P1o(tmp) | P1e(tmp) | P2048o(tmp) | P2048e(tmp));
+ emif_addr = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE;
+ dummy = nand_davinci_readecc(mtd, chipNum); /* reset ecc to 0 */
+ emif_addr->NANDFCR |= (1 << (8+chipNum)); /* start ECC on chip select region+2 */
}
-static int nand_davinci_compare_ecc(u_int8_t *ecc_nand, u_int8_t *ecc_calc, u_int8_t *page_data)
+static int nand_davinci_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
{
- u_int32_t i;
- u_int8_t tmp0_bit[8], tmp1_bit[8], tmp2_bit[8];
- u_int8_t comp0_bit[8], comp1_bit[8], comp2_bit[8];
- u_int8_t ecc_bit[24];
- u_int8_t ecc_sum = 0;
- u_int8_t find_bit = 0;
- u_int32_t find_byte = 0;
- int is_ecc_ff;
-
- is_ecc_ff = ((*ecc_nand == 0xff) && (*(ecc_nand + 1) == 0xff) && (*(ecc_nand + 2) == 0xff));
-
- nand_davinci_gen_true_ecc(ecc_nand);
- nand_davinci_gen_true_ecc(ecc_calc);
-
- for (i = 0; i <= 2; i++) {
- *(ecc_nand + i) = ~(*(ecc_nand + i));
- *(ecc_calc + i) = ~(*(ecc_calc + i));
+ struct nand_chip *nand = mtd->priv;
+ u_int32_t addr = (u_int32_t)nand->IO_ADDR_R;
+ u_int32_t chipNum=(addr-CFG_NAND_BASE)>>25; /* 0 - cs2, 1 - cs3, 2 - cs4, 3 - cs5 */
+ if (chipNum>=4) return -1;
+ u_int32_t tmp = nand_davinci_readecc(mtd, chipNum);
+#ifdef CONFIG_MTD_DEBUG
+/* calculate it ourself and compare */
+/* FORCE_ECC_ERROR is undefined for normal operation */
+/* #define FORCE_ECC_ERROR */
+#ifdef FORCE_ECC_ERROR
+ {
+ /* force single bit ecc error to test ecc correction code */
+ u_char* p = (u_char*)dat;
+ unsigned int i = p[0] | (p[1]<<8); /* 1st word of block determines which bit is made in error */
+ i &= 0xfff;
+ p[i>>3] ^= 1<<(i&7);
+ printf("Forcing ecc error, byte:%d, bit:%d\n",i>>3,i&7);
}
-
- for (i = 0; i < 8; i++) {
- tmp0_bit[i] = *ecc_nand % 2;
- *ecc_nand = *ecc_nand / 2;
- }
-
- for (i = 0; i < 8; i++) {
- tmp1_bit[i] = *(ecc_nand + 1) % 2;
- *(ecc_nand + 1) = *(ecc_nand + 1) / 2;
- }
-
- for (i = 0; i < 8; i++) {
- tmp2_bit[i] = *(ecc_nand + 2) % 2;
- *(ecc_nand + 2) = *(ecc_nand + 2) / 2;
- }
-
- for (i = 0; i < 8; i++) {
- comp0_bit[i] = *ecc_calc % 2;
- *ecc_calc = *ecc_calc / 2;
- }
-
- for (i = 0; i < 8; i++) {
- comp1_bit[i] = *(ecc_calc + 1) % 2;
- *(ecc_calc + 1) = *(ecc_calc + 1) / 2;
- }
-
- for (i = 0; i < 8; i++) {
- comp2_bit[i] = *(ecc_calc + 2) % 2;
- *(ecc_calc + 2) = *(ecc_calc + 2) / 2;
- }
-
- for (i = 0; i< 6; i++)
- ecc_bit[i] = tmp2_bit[i + 2] ^ comp2_bit[i + 2];
-
- for (i = 0; i < 8; i++)
- ecc_bit[i + 6] = tmp0_bit[i] ^ comp0_bit[i];
-
- for (i = 0; i < 8; i++)
- ecc_bit[i + 14] = tmp1_bit[i] ^ comp1_bit[i];
-
- ecc_bit[22] = tmp2_bit[0] ^ comp2_bit[0];
- ecc_bit[23] = tmp2_bit[1] ^ comp2_bit[1];
-
- for (i = 0; i < 24; i++)
- ecc_sum += ecc_bit[i];
-
- switch (ecc_sum) {
- case 0:
- /* Not reached because this function is not called if
- ECC values are equal */
- return 0;
- case 1:
- /* Uncorrectable error */
- DEBUG (MTD_DEBUG_LEVEL0, "ECC UNCORRECTED_ERROR 1\n");
- return(-1);
- case 12:
- /* Correctable error */
- find_byte = (ecc_bit[23] << 8) +
- (ecc_bit[21] << 7) +
- (ecc_bit[19] << 6) +
- (ecc_bit[17] << 5) +
- (ecc_bit[15] << 4) +
- (ecc_bit[13] << 3) +
- (ecc_bit[11] << 2) +
- (ecc_bit[9] << 1) +
- ecc_bit[7];
-
- find_bit = (ecc_bit[5] << 2) + (ecc_bit[3] << 1) + ecc_bit[1];
-
- DEBUG (MTD_DEBUG_LEVEL0, "Correcting single bit ECC error at offset: %d, bit: %d\n", find_byte, find_bit);
-
- page_data[find_byte] ^= (1 << find_bit);
-
- return(0);
- default:
- if (is_ecc_ff) {
- if (ecc_calc[0] == 0 && ecc_calc[1] == 0 && ecc_calc[2] == 0)
- return(0);
- }
- DEBUG (MTD_DEBUG_LEVEL0, "UNCORRECTED_ERROR default\n");
- return(-1);
+#endif
+ {
+ unsigned int i = 0x00000fff; /* 2**12 bits/ecc MAX */
+ unsigned int j = mtd->eccsize; /* 256 or 512 bytes/ecc */
+ unsigned int ecc = 0;
+ do {
+ unsigned int k=i;
+ unsigned int v = *dat++;
+ do {
+ if (v&1) ecc ^= k;
+ k += (1<<16);
+ k--;
+ v >>= 1;
+ } while (v);
+ i += 8<<16;
+ i -= 8;
+ j--;
+ } while (j);
+ if (tmp!=ecc) {
+#ifndef FORCE_ECC_ERROR
+ printf("Hardware Ecc: %x, Calculated: %x\n",tmp,ecc);
+#endif
+ tmp=ecc;
+ }
}
+#endif
+ tmp = (tmp&0x0fff)|((tmp&0x0fff0000)>>4); /* squeeze 0 middle bits out so that it fits in 3 bytes */
+ tmp = ~tmp; /* invert so that erased block ecc is correct */
+ *ecc_code++ = (u_char)(tmp);
+ *ecc_code++ = (u_char)(tmp >> 8);
+ *ecc_code++ = (u_char)(tmp >> 16);
+ return(0);
}
+
static int nand_davinci_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc)
{
- struct nand_chip *this;
- int block_count = 0, i, rc;
-
- this = mtd->priv;
- block_count = (this->eccmode == NAND_ECC_HW12_2048) ? 4 : 1;
- for (i = 0; i < block_count; i++) {
- if (memcmp(read_ecc, calc_ecc, 3) != 0) {
- rc = nand_davinci_compare_ecc(read_ecc, calc_ecc, dat);
- if (rc < 0) {
- return(rc);
+ u_int32_t eccNand = read_ecc[0] | (read_ecc[1]<<8) | (read_ecc[2]<< 16);
+ u_int32_t eccCalc = calc_ecc[0] | (calc_ecc[1]<<8) | (calc_ecc[2]<< 16);
+ u_int32_t diff = eccCalc ^ eccNand;
+ if (diff) {
+ if ((((diff>>12)^diff)&0xfff)==0xfff) {
+ /* Correctable error */
+ if ( (diff>>(12+3)) < mtd->eccsize ) {
+ DEBUG (MTD_DEBUG_LEVEL0, "Correcting single bit ECC error at offset: %d, bit: %d\n", diff>>(12+3), ((diff>>12)&7));
+ dat[diff>>(12+3)] ^= (1 << ((diff>>12)&7));
+ } else {
+ DEBUG (MTD_DEBUG_LEVEL0, "ECC UNCORRECTED_ERROR, illegal byte # %d\n",diff>>(12+3));
+ return(-1);
}
+ } else if ((diff & (-diff))==diff) {
+ DEBUG (MTD_DEBUG_LEVEL0, "Single bit ECC error in the ECC itself, nothing to fix\n");
+ } else {
+ /* Uncorrectable error */
+ u_int32_t hwCalc = (~eccCalc)&0xffffff;
+ hwCalc = (hwCalc&0xfff)|((hwCalc&0xfff000)<<4);
+ DEBUG (MTD_DEBUG_LEVEL0, "ECC UNCORRECTED_ERROR diff:%x nandBlock:%x calc:%x hwCalc:%08x\n",diff,eccNand,eccCalc,hwCalc);
+ return(-1);
}
- read_ecc += 3;
- calc_ecc += 3;
- dat += 512;
}
return(0);
}
#endif
+#ifdef NAND_GPIO_READY_LIST
+static unsigned char nandGpioReadyList[] = {NAND_GPIO_READY_LIST};
+#endif
+
static int nand_davinci_dev_ready(struct mtd_info *mtd)
{
- emifregs emif_addr;
-
- emif_addr = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE;
-
- return(emif_addr->NANDFSR & 0x1);
+#ifdef NAND_GPIO_READY_LIST
+#define GP_BANK0_OFFSET 0x10
+#define GP_BANK_LENGTH 0x28
+#define GP_DIR 0x00
+#define GP_OUT 0x04
+#define GP_SET 0x08
+#define GP_CLR 0x0C
+#define GP_IN 0x10
+
+ struct nand_chip *nand = mtd->priv;
+ u_int32_t addr = (u_int32_t)nand->IO_ADDR_R;
+ u_int32_t chipNum=(addr-CFG_NAND_BASE)>>25; /* 0 - cs2, 1 - cs3, 2 - cs4, 3 - cs5 */
+ if (chipNum<4) {
+ unsigned int gp = nandGpioReadyList[chipNum];
+ if (gp) {
+ unsigned int bank = (gp>>5);
+ volatile unsigned int* p = (unsigned int*)(DAVINCI_GPIO_BASE+GP_BANK0_OFFSET+(bank*GP_BANK_LENGTH));
+ int ret = (p[GP_IN>>2] >> (gp&0x1f))&1;
+ DEBUG (MTD_DEBUG_LEVEL3, "Ready: %d\n", ret);
+ return ret;
+ }
+ }
+#endif
+ emifregs emif_addr = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE;
+ return (emif_addr->NANDFSR & 0x1);
}
+/**
+ * nand_davinci_waitfunc - [DEFAULT] wait until the command is done
+ * @mtd: MTD device structure
+ * @this: NAND chip structure
+ * @state: state to select the max. timeout value
+ *
+ * Wait for command done. This applies to erase and program only
+ * Erase can take up to 400ms and program up to 20ms according to
+ * general NAND and SmartMedia specs
+ *
+*/
static int nand_davinci_waitfunc(struct mtd_info *mtd, struct nand_chip *this, int state)
{
- while(!nand_davinci_dev_ready(mtd)) {;}
- *NAND_CE0CLE = NAND_STATUS;
- return(*NAND_CE0DATA);
+ ulong start = get_timer(0);
+ volatile u_int8_t * p = (volatile u_int8_t *)((unsigned int)this->IO_ADDR_R);
+ unsigned long timeout = (state == FL_ERASING)? ((CFG_HZ * 400) / 1000) : ((CFG_HZ * 20) / 1000);
+#if 0 /* enable this if you don't trust your ready pin. */
+ unsigned long mwait = (state == FL_ERASING)? 400 : 20;
+ udelay(mwait*1000);
+#endif
+
+ p[MASK_CLE] = NAND_CMD_STATUS;
+
+ while (1) {
+ if (get_timer(start) > timeout) {
+ printf("!!!Nand wait Timeout!!!\n");
+ return 1;
+ }
+ if (nand_davinci_dev_ready(mtd)) break;
+ }
+ return (*p);
}
-static void nand_flash_init(void)
+#define BOOTCFG 0x01C40014
+int board_nand_init(struct nand_chip *nand)
{
- u_int32_t acfg1 = 0x3ffffffc;
- u_int32_t acfg2 = 0x3ffffffc;
- u_int32_t acfg3 = 0x3ffffffc;
- u_int32_t acfg4 = 0x3ffffffc;
- emifregs emif_regs;
-
+ u_int32_t acfg = 0
+ | (0<<31) /* selectStrobe */
+ | (0<<30) /* extWait */
+ | (1<<26) /* writeSetup 10 ns */
+ | (3<<20) /* writeStrobe 40 ns */
+ | (1<<17) /* writeHold 10 ns */
+ | (1<<13) /* readSetup 10 ns */
+ | (5<<7) /* readStrobe 60 ns */
+ | (1<<4) /* readHold 10 ns */
+ | (3<<2) /* turnAround ?? ns */
+ ;
+ acfg |= (*((unsigned int*)BOOTCFG)>>5)&1; /* grab default width from EM_WIDTH */
/*------------------------------------------------------------------*
* NAND FLASH CHIP TIMEOUT @ 459 MHz *
* *
@@ -324,46 +312,39 @@ static void nand_flash_init(void)
* AEMIF.CLK period = 1/76.5 MHz = 13.1 ns *
* *
*------------------------------------------------------------------*/
- acfg1 = 0
- | (0 << 31 ) /* selectStrobe */
- | (0 << 30 ) /* extWait */
- | (1 << 26 ) /* writeSetup 10 ns */
- | (3 << 20 ) /* writeStrobe 40 ns */
- | (1 << 17 ) /* writeHold 10 ns */
- | (1 << 13 ) /* readSetup 10 ns */
- | (5 << 7 ) /* readStrobe 60 ns */
- | (1 << 4 ) /* readHold 10 ns */
- | (3 << 2 ) /* turnAround ?? ns */
- | (0 << 0 ) /* asyncSize 8-bit bus */
- ;
-
- emif_regs = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE;
- emif_regs->AWCCR |= 0x10000000;
- emif_regs->AB1CR = acfg1; /* 0x08244128 */;
- emif_regs->AB2CR = acfg2;
- emif_regs->AB3CR = acfg3;
- emif_regs->AB4CR = acfg4;
- emif_regs->NANDFCR = 0x00000101;
-}
+ emifregs emif_regs = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE;
+ u_int32_t addr = (u_int32_t)nand->IO_ADDR_R;
+ u_int32_t chipNum=(addr-CFG_NAND_BASE)>>25; /* 0 - cs2, 1 - cs3, 2 - cs4, 3 - cs5 */
+ if (chipNum>=4) return -1;
+
+ emif_regs->AB_CR[chipNum] = acfg; /* 0x08244128 */
+ emif_regs->NANDFCR |= 1<<chipNum;
+
+#ifdef NAND_GPIO_READY_LIST
+ {
+ unsigned int gp = nandGpioReadyList[chipNum];
+ if (gp) {
+ unsigned int bank = (gp>>5);
+ volatile unsigned int* p = (unsigned int*)(DAVINCI_GPIO_BASE+GP_BANK0_OFFSET+(bank*GP_BANK_LENGTH));
+ int val;
+ int bitNum = (gp&0x1f);
+ p[GP_DIR>>2] |= 1<<bitNum; /* make sure it's an input */
+ val = (p[GP_IN>>2] >> bitNum)&1;
+ DEBUG (MTD_DEBUG_LEVEL3, "Bank: %x curVal:%x inReg:%p=%x\n", bank,val,&p[GP_IN>>2],p[GP_IN>>2]);
+ }
+ }
+#endif
-int board_nand_init(struct nand_chip *nand)
-{
- nand->IO_ADDR_R = (void __iomem *)NAND_CE0DATA;
- nand->IO_ADDR_W = (void __iomem *)NAND_CE0DATA;
+ DEBUG (MTD_DEBUG_LEVEL3, "Nand base read:%p write:%p\n",nand->IO_ADDR_R,nand->IO_ADDR_W);
nand->chip_delay = 0;
nand->select_chip = nand_davinci_select_chip;
+ nand->options = (acfg&1)? NAND_BUSWIDTH_16 : 0;
#ifdef CFG_NAND_USE_FLASH_BBT
- nand->options = NAND_USE_FLASH_BBT;
+ nand->options |= NAND_USE_FLASH_BBT;
#endif
#ifdef CFG_NAND_HW_ECC
-#ifdef CFG_NAND_LARGEPAGE
- nand->eccmode = NAND_ECC_HW12_2048;
-#elif defined(CFG_NAND_SMALLPAGE)
nand->eccmode = NAND_ECC_HW3_512;
-#else
-#error "Either CFG_NAND_LARGEPAGE or CFG_NAND_SMALLPAGE must be defined!"
-#endif
nand->autooob = &davinci_nand_oobinfo;
nand->calculate_ecc = nand_davinci_calculate_ecc;
nand->correct_data = nand_davinci_correct_data;
@@ -377,9 +358,6 @@ int board_nand_init(struct nand_chip *nand)
nand->dev_ready = nand_davinci_dev_ready;
nand->waitfunc = nand_davinci_waitfunc;
-
- nand_flash_init();
-
return(0);
}
diff --git a/include/asm-arm/arch-davinci/emif_defs.h b/include/asm-arm/arch-davinci/emif_defs.h
index 646fc77..d6b36da 100644
--- a/include/asm-arm/arch-davinci/emif_defs.h
+++ b/include/asm-arm/arch-davinci/emif_defs.h
@@ -29,10 +29,7 @@ typedef struct {
dv_reg AWCCR;
dv_reg SDBCR;
dv_reg SDRCR;
- dv_reg AB1CR;
- dv_reg AB2CR;
- dv_reg AB3CR;
- dv_reg AB4CR;
+ dv_reg AB_CR[4];
dv_reg SDTIMR;
dv_reg DDRSR;
dv_reg DDRPHYCR;
@@ -51,10 +48,7 @@ typedef struct {
dv_reg NANDFCR;
dv_reg NANDFSR;
u_int8_t RSVD1[8];
- dv_reg NANDF1ECC;
- dv_reg NANDF2ECC;
- dv_reg NANDF3ECC;
- dv_reg NANDF4ECC;
+ dv_reg NANDF_ECC[4];
} emif_registers;
typedef emif_registers *emifregs;
diff --git a/include/asm-arm/arch-davinci/nand_defs.h b/include/asm-arm/arch-davinci/nand_defs.h
index 619bd47..9c324c9 100644
--- a/include/asm-arm/arch-davinci/nand_defs.h
+++ b/include/asm-arm/arch-davinci/nand_defs.h
@@ -26,136 +26,11 @@
#ifndef _NAND_DEFS_H_
#define _NAND_DEFS_H_
-#include <asm/arch/hardware.h>
-
#define MASK_CLE 0x10
-#define MASK_ALE 0x0a
-
-#define NAND_CE0CLE ((volatile u_int8_t *)(CFG_NAND_BASE + 0x10))
-#define NAND_CE0ALE ((volatile u_int8_t *)(CFG_NAND_BASE + 0x0a))
-#define NAND_CE0DATA ((volatile u_int8_t *)CFG_NAND_BASE)
-
-typedef struct {
- u_int32_t NRCSR;
- u_int32_t AWCCR;
- u_int8_t RSVD0[8];
- u_int32_t AB1CR;
- u_int32_t AB2CR;
- u_int32_t AB3CR;
- u_int32_t AB4CR;
- u_int8_t RSVD1[32];
- u_int32_t NIRR;
- u_int32_t NIMR;
- u_int32_t NIMSR;
- u_int32_t NIMCR;
- u_int8_t RSVD2[16];
- u_int32_t NANDFCR;
- u_int32_t NANDFSR;
- u_int8_t RSVD3[8];
- u_int32_t NANDF1ECC;
- u_int32_t NANDF2ECC;
- u_int32_t NANDF3ECC;
- u_int32_t NANDF4ECC;
- u_int8_t RSVD4[4];
- u_int32_t IODFTECR;
- u_int32_t IODFTGCR;
- u_int8_t RSVD5[4];
- u_int32_t IODFTMRLR;
- u_int32_t IODFTMRMR;
- u_int32_t IODFTMRMSBR;
- u_int8_t RSVD6[20];
- u_int32_t MODRNR;
- u_int8_t RSVD7[76];
- u_int32_t CE0DATA;
- u_int32_t CE0ALE;
- u_int32_t CE0CLE;
- u_int8_t RSVD8[4];
- u_int32_t CE1DATA;
- u_int32_t CE1ALE;
- u_int32_t CE1CLE;
- u_int8_t RSVD9[4];
- u_int32_t CE2DATA;
- u_int32_t CE2ALE;
- u_int32_t CE2CLE;
- u_int8_t RSVD10[4];
- u_int32_t CE3DATA;
- u_int32_t CE3ALE;
- u_int32_t CE3CLE;
-} nand_registers;
-
-typedef volatile nand_registers *nandregs;
+#define MASK_ALE 0x08
#define NAND_READ_START 0x00
#define NAND_READ_END 0x30
#define NAND_STATUS 0x70
-#ifdef CFG_NAND_HW_ECC
-#define NAND_Ecc_P1e (1 << 0)
-#define NAND_Ecc_P2e (1 << 1)
-#define NAND_Ecc_P4e (1 << 2)
-#define NAND_Ecc_P8e (1 << 3)
-#define NAND_Ecc_P16e (1 << 4)
-#define NAND_Ecc_P32e (1 << 5)
-#define NAND_Ecc_P64e (1 << 6)
-#define NAND_Ecc_P128e (1 << 7)
-#define NAND_Ecc_P256e (1 << 8)
-#define NAND_Ecc_P512e (1 << 9)
-#define NAND_Ecc_P1024e (1 << 10)
-#define NAND_Ecc_P2048e (1 << 11)
-
-#define NAND_Ecc_P1o (1 << 16)
-#define NAND_Ecc_P2o (1 << 17)
-#define NAND_Ecc_P4o (1 << 18)
-#define NAND_Ecc_P8o (1 << 19)
-#define NAND_Ecc_P16o (1 << 20)
-#define NAND_Ecc_P32o (1 << 21)
-#define NAND_Ecc_P64o (1 << 22)
-#define NAND_Ecc_P128o (1 << 23)
-#define NAND_Ecc_P256o (1 << 24)
-#define NAND_Ecc_P512o (1 << 25)
-#define NAND_Ecc_P1024o (1 << 26)
-#define NAND_Ecc_P2048o (1 << 27)
-
-#define TF(v) (v ? 1 : 0)
-
-#define P2048e(a) (TF(a & NAND_Ecc_P2048e) << 0)
-#define P2048o(a) (TF(a & NAND_Ecc_P2048o) << 1)
-#define P1e(a) (TF(a & NAND_Ecc_P1e) << 2)
-#define P1o(a) (TF(a & NAND_Ecc_P1o) << 3)
-#define P2e(a) (TF(a & NAND_Ecc_P2e) << 4)
-#define P2o(a) (TF(a & NAND_Ecc_P2o) << 5)
-#define P4e(a) (TF(a & NAND_Ecc_P4e) << 6)
-#define P4o(a) (TF(a & NAND_Ecc_P4o) << 7)
-
-#define P8e(a) (TF(a & NAND_Ecc_P8e) << 0)
-#define P8o(a) (TF(a & NAND_Ecc_P8o) << 1)
-#define P16e(a) (TF(a & NAND_Ecc_P16e) << 2)
-#define P16o(a) (TF(a & NAND_Ecc_P16o) << 3)
-#define P32e(a) (TF(a & NAND_Ecc_P32e) << 4)
-#define P32o(a) (TF(a & NAND_Ecc_P32o) << 5)
-#define P64e(a) (TF(a & NAND_Ecc_P64e) << 6)
-#define P64o(a) (TF(a & NAND_Ecc_P64o) << 7)
-
-#define P128e(a) (TF(a & NAND_Ecc_P128e) << 0)
-#define P128o(a) (TF(a & NAND_Ecc_P128o) << 1)
-#define P256e(a) (TF(a & NAND_Ecc_P256e) << 2)
-#define P256o(a) (TF(a & NAND_Ecc_P256o) << 3)
-#define P512e(a) (TF(a & NAND_Ecc_P512e) << 4)
-#define P512o(a) (TF(a & NAND_Ecc_P512o) << 5)
-#define P1024e(a) (TF(a & NAND_Ecc_P1024e) << 6)
-#define P1024o(a) (TF(a & NAND_Ecc_P1024o) << 7)
-
-#define P8e_s(a) (TF(a & NAND_Ecc_P8e) << 0)
-#define P8o_s(a) (TF(a & NAND_Ecc_P8o) << 1)
-#define P16e_s(a) (TF(a & NAND_Ecc_P16e) << 2)
-#define P16o_s(a) (TF(a & NAND_Ecc_P16o) << 3)
-#define P1e_s(a) (TF(a & NAND_Ecc_P1e) << 4)
-#define P1o_s(a) (TF(a & NAND_Ecc_P1o) << 5)
-#define P2e_s(a) (TF(a & NAND_Ecc_P2e) << 6)
-#define P2o_s(a) (TF(a & NAND_Ecc_P2o) << 7)
-
-#define P4e_s(a) (TF(a & NAND_Ecc_P4e) << 0)
-#define P4o_s(a) (TF(a & NAND_Ecc_P4o) << 1)
-#endif
-
#endif
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