diff options
Diffstat (limited to 'board/zylonite/nand.c')
| -rw-r--r-- | board/zylonite/nand.c | 110 |
1 files changed, 57 insertions, 53 deletions
diff --git a/board/zylonite/nand.c b/board/zylonite/nand.c index 7cad1ac..71d18a6 100644 --- a/board/zylonite/nand.c +++ b/board/zylonite/nand.c @@ -21,6 +21,7 @@ */ #include <common.h> +#include <asm/io.h> #if defined(CONFIG_CMD_NAND) @@ -95,7 +96,7 @@ static void dfc_write_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]; - NDDB = *long_buf; + writel(*long_buf, NDDB); } } if(rest) { @@ -125,7 +126,7 @@ static void dfc_read_buf(struct mtd_info *mtd, u_char* const 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); } } @@ -171,8 +172,8 @@ static u_char dfc_read_byte(struct mtd_info *mtd) 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++)); @@ -186,7 +187,7 @@ static u_char dfc_read_byte(struct mtd_info *mtd) /* 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)); @@ -197,7 +198,7 @@ static unsigned long get_delta(unsigned long start) /* delay function, this doesn't belong here */ static void wait_us(unsigned long us) { - unsigned long start = OSCR; + unsigned long start = readl(OSCR); us = DIV_ROUND_UP(us * OSCR_CLK_FREQ, 1000); while (get_delta(start) < us) { @@ -207,14 +208,14 @@ static void wait_us(unsigned long us) static void dfc_clear_nddb(void) { - NDCR &= ~NDCR_ND_RUN; + 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; @@ -226,9 +227,9 @@ static unsigned long dfc_wait_event(unsigned long event) * 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) { @@ -248,11 +249,11 @@ static void dfc_new_cmd(void) 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); @@ -362,9 +363,9 @@ static void dfc_cmdfunc(struct mtd_info *mtd, unsigned command, } write_cmd: - NDCB0 = ndcb0; - NDCB0 = ndcb1; - NDCB0 = ndcb2; + writel(ndcb0, NDCB0); + writel(ndcb1, NDCB0); + writel(ndcb2, NDCB0); /* wait_event: */ dfc_wait_event(event); @@ -377,36 +378,36 @@ static void dfc_gpio_init(void) 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); } /* @@ -435,7 +436,7 @@ int board_nand_init(struct nand_chip *nand) 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 CONFIG_SYS_TIMING_TIGHT #ifndef CONFIG_SYS_TIMING_TIGHT @@ -490,17 +491,19 @@ int board_nand_init(struct nand_chip *nand) 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 @@ -517,7 +520,7 @@ int board_nand_init(struct nand_chip *nand) */ /* 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 */ @@ -533,7 +536,8 @@ int board_nand_init(struct nand_chip *nand) 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 */ |