*/
#include <common.h>
+#include <asm/io.h>
-#if (CONFIG_COMMANDS & CFG_CMD_NAND)
-#ifdef CONFIG_NEW_NAND_CODE
+#if defined(CONFIG_CMD_NAND)
#include <nand.h>
#include <asm/arch/pxa-regs.h>
-#ifdef CFG_DFC_DEBUG1
+#ifdef CONFIG_SYS_DFC_DEBUG1
# define DFC_DEBUG1(fmt, args...) printf(fmt, ##args)
#else
# define DFC_DEBUG1(fmt, args...)
#endif
-#ifdef CFG_DFC_DEBUG2
+#ifdef CONFIG_SYS_DFC_DEBUG2
# define DFC_DEBUG2(fmt, args...) printf(fmt, ##args)
#else
# define DFC_DEBUG2(fmt, args...)
#endif
-#ifdef CFG_DFC_DEBUG3
+#ifdef CONFIG_SYS_DFC_DEBUG3
# define DFC_DEBUG3(fmt, args...) printf(fmt, ##args)
#else
# define DFC_DEBUG3(fmt, args...)
#endif
-#define MIN(x, y) ((x < y) ? x : y)
-
/* These really don't belong here, as they are specific to the NAND Model */
static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
.pattern = scan_ff_pattern
};
-static struct nand_oobinfo delta_oob = {
- .useecc = MTD_NANDECC_AUTOPL_USR, /* MTD_NANDECC_PLACEONLY, */
+static struct nand_ecclayout delta_oob = {
.eccbytes = 6,
.eccpos = {2, 3, 4, 5, 6, 7},
.oobfree = { {8, 2}, {12, 4} }
};
-
/*
* not required for Monahans DFC
*/
-static void dfc_hwcontrol(struct mtd_info *mtdinfo, int cmd)
+static void dfc_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
return;
}
if(bytes_multi) {
for(i=0; i<bytes_multi; i+=4) {
long_buf = (unsigned long*) &buf[i];
- NDDB = *long_buf;
+ writel(*long_buf, NDDB);
}
}
if(rest) {
}
-/*
- * These functions are quite problematic for the DFC. Luckily they are
- * not used in the current nand code, except for nand_command, which
- * we've defined our own anyway. The problem is, that we always need
- * to write 4 bytes to the DFC Data Buffer, but in these functions we
- * don't know if to buffer the bytes/half words until we've gathered 4
- * bytes or if to send them straight away.
- *
- * Solution: Don't use these with Mona's DFC and complain loudly.
- */
-static void dfc_write_word(struct mtd_info *mtd, u16 word)
-{
- printf("dfc_write_word: WARNING, this function does not work with the Monahans DFC!\n");
-}
-static void dfc_write_byte(struct mtd_info *mtd, u_char byte)
-{
- printf("dfc_write_byte: WARNING, this function does not work with the Monahans DFC!\n");
-}
-
/* The original:
* static void dfc_read_buf(struct mtd_info *mtd, const u_char *buf, int len)
*
if(bytes_multi) {
for(i=0; i<bytes_multi; i+=4) {
long_buf = (unsigned long*) &buf[i];
- *long_buf = NDDB;
+ *long_buf = readl(NDDB);
}
}
*/
static u16 dfc_read_word(struct mtd_info *mtd)
{
- printf("dfc_write_byte: UNIMPLEMENTED.\n");
+ printf("dfc_read_word: UNIMPLEMENTED.\n");
return 0;
}
unsigned long dummy;
if(bytes_read < 0) {
- read_buf = NDDB;
- dummy = NDDB;
+ read_buf = readl(NDDB);
+ dummy = readl(NDDB);
bytes_read = 0;
}
byte = (unsigned char) (read_buf>>(8 * bytes_read++));
/* calculate delta between OSCR values start and now */
static unsigned long get_delta(unsigned long start)
{
- unsigned long cur = OSCR;
+ unsigned long cur = readl(OSCR);
if(cur < start) /* OSCR overflowed */
return (cur + (start^0xffffffff));
/* delay function, this doesn't belong here */
static void wait_us(unsigned long us)
{
- unsigned long start = OSCR;
- us *= OSCR_CLK_FREQ;
+ unsigned long start = readl(OSCR);
+ us = DIV_ROUND_UP(us * OSCR_CLK_FREQ, 1000);
while (get_delta(start) < us) {
/* do nothing */
static void dfc_clear_nddb(void)
{
- NDCR &= ~NDCR_ND_RUN;
- wait_us(CFG_NAND_OTHER_TO);
+ writel(readl(NDCR) & ~NDCR_ND_RUN, NDCR);
+ wait_us(CONFIG_SYS_NAND_OTHER_TO);
}
/* wait_event with timeout */
static unsigned long dfc_wait_event(unsigned long event)
{
- unsigned long ndsr, timeout, start = OSCR;
+ unsigned long ndsr, timeout, start = readl(OSCR);
if(!event)
return 0xff000000;
else if(event & (NDSR_CS0_CMDD | NDSR_CS0_BBD))
- timeout = CFG_NAND_PROG_ERASE_TO * OSCR_CLK_FREQ;
+ timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_PROG_ERASE_TO
+ * OSCR_CLK_FREQ, 1000);
else
- timeout = CFG_NAND_OTHER_TO * OSCR_CLK_FREQ;
+ timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_OTHER_TO
+ * OSCR_CLK_FREQ, 1000);
while(1) {
- ndsr = NDSR;
+ ndsr = readl(NDSR);
if(ndsr & event) {
- NDSR |= event;
+ writel(readl(NDSR) | event, NDSR);
break;
}
if(get_delta(start) > timeout) {
- DFC_DEBUG1("dfc_wait_event: TIMEOUT waiting for event: 0x%x.\n", event);
+ DFC_DEBUG1("dfc_wait_event: TIMEOUT waiting for event: 0x%lx.\n", event);
return 0xff000000;
}
int retry = 0;
unsigned long status;
- while(retry++ <= CFG_NAND_SENDCMD_RETRY) {
+ while(retry++ <= CONFIG_SYS_NAND_SENDCMD_RETRY) {
/* Clear NDSR */
- NDSR = 0xFFF;
+ writel(0xFFF, NDSR);
/* set NDCR[NDRUN] */
- if(!(NDCR & NDCR_ND_RUN))
- NDCR |= NDCR_ND_RUN;
+ if (!(readl(NDCR) & NDCR_ND_RUN))
+ writel(readl(NDCR) | NDCR_ND_RUN, NDCR);
status = dfc_wait_event(NDSR_WRCMDREQ);
/* this function is called after Programm and Erase Operations to
* check for success or failure */
-static int dfc_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
+static int dfc_wait(struct mtd_info *mtd, struct nand_chip *this)
{
unsigned long ndsr=0, event=0;
+ int state = this->state;
if(state == FL_WRITING) {
event = NDSR_CS0_CMDD | NDSR_CS0_BBD;
}
write_cmd:
- NDCB0 = ndcb0;
- NDCB0 = ndcb1;
- NDCB0 = ndcb2;
+ writel(ndcb0, NDCB0);
+ writel(ndcb1, NDCB0);
+ writel(ndcb2, NDCB0);
/* wait_event: */
dfc_wait_event(event);
DFC_DEBUG2("Setting up DFC GPIO's.\n");
/* no idea what is done here, see zylonite.c */
- GPIO4 = 0x1;
-
- DF_ALE_WE1 = 0x00000001;
- DF_ALE_WE2 = 0x00000001;
- DF_nCS0 = 0x00000001;
- DF_nCS1 = 0x00000001;
- DF_nWE = 0x00000001;
- DF_nRE = 0x00000001;
- DF_IO0 = 0x00000001;
- DF_IO8 = 0x00000001;
- DF_IO1 = 0x00000001;
- DF_IO9 = 0x00000001;
- DF_IO2 = 0x00000001;
- DF_IO10 = 0x00000001;
- DF_IO3 = 0x00000001;
- DF_IO11 = 0x00000001;
- DF_IO4 = 0x00000001;
- DF_IO12 = 0x00000001;
- DF_IO5 = 0x00000001;
- DF_IO13 = 0x00000001;
- DF_IO6 = 0x00000001;
- DF_IO14 = 0x00000001;
- DF_IO7 = 0x00000001;
- DF_IO15 = 0x00000001;
-
- DF_nWE = 0x1901;
- DF_nRE = 0x1901;
- DF_CLE_NOE = 0x1900;
- DF_ALE_WE1 = 0x1901;
- DF_INT_RnB = 0x1900;
+ writel(0x1, GPIO4);
+
+ writel(0x00000001, DF_ALE_nWE1);
+ writel(0x00000001, DF_ALE_nWE2);
+ writel(0x00000001, DF_nCS0);
+ writel(0x00000001, DF_nCS1);
+ writel(0x00000001, DF_nWE);
+ writel(0x00000001, DF_nRE);
+ writel(0x00000001, DF_IO0);
+ writel(0x00000001, DF_IO8);
+ writel(0x00000001, DF_IO1);
+ writel(0x00000001, DF_IO9);
+ writel(0x00000001, DF_IO2);
+ writel(0x00000001, DF_IO10);
+ writel(0x00000001, DF_IO3);
+ writel(0x00000001, DF_IO11);
+ writel(0x00000001, DF_IO4);
+ writel(0x00000001, DF_IO12);
+ writel(0x00000001, DF_IO5);
+ writel(0x00000001, DF_IO13);
+ writel(0x00000001, DF_IO6);
+ writel(0x00000001, DF_IO14);
+ writel(0x00000001, DF_IO7);
+ writel(0x00000001, DF_IO15);
+
+ writel(0x1901, DF_nWE);
+ writel(0x1901, DF_nRE);
+ writel(0x1900, DF_CLE_nOE);
+ writel(0x1901, DF_ALE_nWE1);
+ writel(0x1900, DF_INT_RnB);
}
/*
* argument are board-specific (per include/linux/mtd/nand_new.h):
* - IO_ADDR_R?: address to read the 8 I/O lines of the flash device
* - IO_ADDR_W?: address to write the 8 I/O lines of the flash device
- * - hwcontrol: hardwarespecific function for accesing control-lines
+ * - cmd_ctrl: hardwarespecific function for accesing control-lines
* - dev_ready: hardwarespecific function for accesing device ready/busy line
* - enable_hwecc?: function to enable (reset) hardware ecc generator. Must
* only be provided if a hardware ECC is available
- * - eccmode: mode of ecc, see defines
+ * - ecc.mode: mode of ecc, see defines
* - chip_delay: chip dependent delay for transfering data from array to
* read regs (tR)
* - options: various chip options. They can partly be set to inform
* Members with a "?" were not set in the merged testing-NAND branch,
* so they are not set here either.
*/
-void board_nand_init(struct nand_chip *nand)
+int board_nand_init(struct nand_chip *nand)
{
unsigned long tCH, tCS, tWH, tWP, tRH, tRP, tRP_high, tR, tWHR, tAR;
dfc_gpio_init();
/* turn on the NAND Controller Clock (104 MHz @ D0) */
- CKENA |= (CKENA_4_NAND | CKENA_9_SMC);
+ writel(readl(CKENA) | (CKENA_4_NAND | CKENA_9_SMC), CKENA);
-#undef CFG_TIMING_TIGHT
-#ifndef CFG_TIMING_TIGHT
+#undef CONFIG_SYS_TIMING_TIGHT
+#ifndef CONFIG_SYS_TIMING_TIGHT
tCH = MIN(((unsigned long) (NAND_TIMING_tCH * DFC_CLK_PER_US) + 1),
DFC_MAX_tCH);
tCS = MIN(((unsigned long) (NAND_TIMING_tCS * DFC_CLK_PER_US) + 1),
DFC_MAX_tWHR);
tAR = MIN(((unsigned long) (NAND_TIMING_tAR * DFC_CLK_PER_US) - 2),
DFC_MAX_tAR);
-#endif /* CFG_TIMING_TIGHT */
+#endif /* CONFIG_SYS_TIMING_TIGHT */
DFC_DEBUG2("tCH=%u, tCS=%u, tWH=%u, tWP=%u, tRH=%u, tRP=%u, tR=%u, tWHR=%u, tAR=%u.\n", tCH, tCS, tWH, tWP, tRH, tRP, tR, tWHR, tAR);
tRP_high = 0;
}
- NDTR0CS0 = (tCH << 19) |
+ writel((tCH << 19) |
(tCS << 16) |
(tWH << 11) |
(tWP << 8) |
(tRP_high << 6) |
(tRH << 3) |
- (tRP << 0);
+ (tRP << 0),
+ NDTR0CS0);
- NDTR1CS0 = (tR << 16) |
+ writel((tR << 16) |
(tWHR << 4) |
- (tAR << 0);
+ (tAR << 0),
+ NDTR1CS0);
/* If it doesn't work (unlikely) think about:
* - ecc enable
*/
/* NDCR_NCSX | /\* Chip select busy don't care *\/ */
- NDCR = (NDCR_SPARE_EN | /* use the spare area */
+ writel(NDCR_SPARE_EN | /* use the spare area */
NDCR_DWIDTH_C | /* 16bit DFC data bus width */
NDCR_DWIDTH_M | /* 16 bit Flash device data bus width */
(2 << 16) | /* read id count = 7 ???? mk@tbd */
NDCR_SBERRM | /* single bit error ir masked */
NDCR_WRDREQM | /* write data request ir masked */
NDCR_RDDREQM | /* read data request ir masked */
- NDCR_WRCMDREQM); /* write command request ir masked */
+ NDCR_WRCMDREQM, /* write command request ir masked */
+ NDCR);
/* wait 10 us due to cmd buffer clear reset */
/* wait(10); */
-
- nand->hwcontrol = dfc_hwcontrol;
+ nand->cmd_ctrl = dfc_hwcontrol;
/* nand->dev_ready = dfc_device_ready; */
- nand->eccmode = NAND_ECC_SOFT;
+ nand->ecc.mode = NAND_ECC_SOFT;
+ nand->ecc.layout = &delta_oob;
nand->options = NAND_BUSWIDTH_16;
nand->waitfunc = dfc_wait;
nand->read_byte = dfc_read_byte;
- nand->write_byte = dfc_write_byte;
nand->read_word = dfc_read_word;
- nand->write_word = dfc_write_word;
nand->read_buf = dfc_read_buf;
nand->write_buf = dfc_write_buf;
nand->cmdfunc = dfc_cmdfunc;
- nand->autooob = &delta_oob;
nand->badblock_pattern = &delta_bbt_descr;
+ return 0;
}
-#else
- #error "U-Boot legacy NAND support not available for Monahans DFC."
-#endif
#endif
projects / people / ms / u-boot.git / blobdiff