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| author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:09 -0500 | 
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:16 +0200 | 
| commit | 8d1f268204b07e172f3cb5cee0a3974d605b0b98 (patch) | |
| tree | c3359e920cc886e7060fb099bf933496aca37153 /cpu/mpc5xx/spi.c | |
| parent | 819833af39a91fa1c1e8252862bbda6f5a602f7b (diff) | |
| download | olio-uboot-2014.01-8d1f268204b07e172f3cb5cee0a3974d605b0b98.tar.xz olio-uboot-2014.01-8d1f268204b07e172f3cb5cee0a3974d605b0b98.zip | |
ppc: Move cpu/$CPU to arch/ppc/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'cpu/mpc5xx/spi.c')
| -rw-r--r-- | cpu/mpc5xx/spi.c | 412 | 
1 files changed, 0 insertions, 412 deletions
| diff --git a/cpu/mpc5xx/spi.c b/cpu/mpc5xx/spi.c deleted file mode 100644 index 3ca15ea83..000000000 --- a/cpu/mpc5xx/spi.c +++ /dev/null @@ -1,412 +0,0 @@ -/* - * Copyright (c) 2001 Navin Boppuri / Prashant Patel - *	<nboppuri@trinetcommunication.com>, - *	<pmpatel@trinetcommunication.com> - * Copyright (c) 2001 Gerd Mennchen <Gerd.Mennchen@icn.siemens.de> - * Copyright (c) 2001 Wolfgang Denk, DENX Software Engineering, <wd@denx.de>. - * - * 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 - */ - -/* - * MPC5xx CPM SPI interface. - * - * Parts of this code are probably not portable and/or specific to - * the board which I used for the tests. Please send fixes/complaints - * to wd@denx.de - * - * Ported to MPC5xx - * Copyright (c) 2003 Denis Peter, MPL AG Switzerland, d.petr@mpl.ch. - */ - -#include <common.h> -#include <mpc5xx.h> -#include <asm/5xx_immap.h> -#include <linux/ctype.h> -#include <malloc.h> -#include <post.h> -#include <net.h> - -#if defined(CONFIG_SPI) - -#undef	DEBUG - -#define SPI_EEPROM_WREN		0x06 -#define SPI_EEPROM_RDSR		0x05 -#define SPI_EEPROM_READ		0x03 -#define SPI_EEPROM_WRITE	0x02 - - -#ifdef	DEBUG - -#define	DPRINT(a)	printf a; -/* ----------------------------------------------- - * Helper functions to peek into tx and rx buffers - * ----------------------------------------------- */ -static const char * const hex_digit = "0123456789ABCDEF"; - -static char quickhex (int i) -{ -	return hex_digit[i]; -} - -static void memdump (void *pv, int num) -{ -	int i; -	unsigned char *pc = (unsigned char *) pv; - -	for (i = 0; i < num; i++) -		printf ("%c%c ", quickhex (pc[i] >> 4), quickhex (pc[i] & 0x0f)); -	printf ("\t"); -	for (i = 0; i < num; i++) -		printf ("%c", isprint (pc[i]) ? pc[i] : '.'); -	printf ("\n"); -} -#else	/* !DEBUG */ - -#define	DPRINT(a) - -#endif	/* DEBUG */ - -/* ------------------- - * Function prototypes - * ------------------- */ -void spi_init (void); - -ssize_t spi_read (uchar *, int, uchar *, int); -ssize_t spi_write (uchar *, int, uchar *, int); -ssize_t spi_xfer (size_t); - - -/* ************************************************************************** - * - *  Function:    spi_init_f - * - *  Description: Init SPI-Controller (ROM part) - * - *  return:      --- - * - * *********************************************************************** */ - -void spi_init_f (void) -{ -	int i; - -	volatile immap_t *immr; -	volatile qsmcm5xx_t *qsmcm; - -	immr = (immap_t *)  CONFIG_SYS_IMMR; -	qsmcm = (qsmcm5xx_t *)&immr->im_qsmcm; - -	qsmcm->qsmcm_qsmcr = 0; /* all accesses enabled */ -	qsmcm->qsmcm_qspi_il = 0; /* lowest IRQ */ - -	/* -------------------------------------------- -	 * GPIO or per. Function -	 * PQSPAR[00] = 0 reserved -	 * PQSPAR[01] = 1 [0x4000] -> PERI: (SPICS3) -	 * PQSPAR[02] = 0 [0x0000] -> GPIO -	 * PQSPAR[03] = 0 [0x0000] -> GPIO -	 * PQSPAR[04] = 1 [0x0800] -> PERI: (SPICS0) -	 * PQSPAR[05] = 0 reseved -	 * PQSPAR[06] = 1 [0x0200] -> PERI: (SPIMOSI) -	 * PQSPAR[07] = 1 [0x0100] -> PERI: (SPIMISO) -	 * -------------------------------------------- */ -	qsmcm->qsmcm_pqspar =  0x3 | (CONFIG_SYS_SPI_CS_USED << 3); - -	 /* -------------------------------------------- -	 * DDRQS[00] = 0 reserved -	 * DDRQS[01] = 1 [0x0040] -> SPICS3 Output -	 * DDRQS[02] = 0 [0x0000] -> GPIO Output -	 * DDRQS[03] = 0 [0x0000] -> GPIO Output -	 * DDRQS[04] = 1 [0x0008] -> SPICS0 Output -	 * DDRQS[05] = 1 [0x0004] -> SPICLK Output -	 * DDRQS[06] = 1 [0x0002] -> SPIMOSI Output -	 * DDRQS[07] = 0 [0x0001] -> SPIMISO Input -	 * -------------------------------------------- */ -	qsmcm->qsmcm_ddrqs = 0x7E; -	 /* -------------------------------------------- -	 * Base state for used SPI CS pins, if base = 0 active must be 1 -	 * PORTQS[00] = 0 reserved -	 * PORTQS[01] = 0 reserved -	 * PORTQS[02] = 0 reserved -	 * PORTQS[03] = 0 reserved -	 * PORTQS[04] = 0 [0x0000] RxD2 -	 * PORTQS[05] = 1 [0x0400] TxD2 -	 * PORTQS[06] = 0 [0x0000] RxD1 -	 * PORTQS[07] = 1 [0x0100] TxD1 -	 * PORTQS[08] = 0 reserved -	 * PORTQS[09] = 0 [0x0000] -> SPICS3 Base Output -	 * PORTQS[10] = 0 [0x0000] -> SPICS2 Base Output -	 * PORTQS[11] = 0 [0x0000] -> SPICS1 Base Output -	 * PORTQS[12] = 0 [0x0000] -> SPICS0 Base Output -	 * PORTQS[13] = 0 [0x0004] -> SPICLK Output -	 * PORTQS[14] = 0 [0x0002] -> SPIMOSI Output -	 * PORTQS[15] = 0 [0x0001] -> SPIMISO Input -	 * -------------------------------------------- */ -	qsmcm->qsmcm_portqs |= (CONFIG_SYS_SPI_CS_BASE << 3); -	/* -------------------------------------------- -	 * Controll Register 0 -	 * SPCR0[00] = 1 (0x8000) Master -	 * SPCR0[01] = 0 (0x0000) Wired-Or -	 * SPCR0[2..5] = (0x2000) Bits per transfer (default 8) -	 * SPCR0[06] = 0 (0x0000) Normal polarity -	 * SPCR0[07] = 0 (0x0000) Normal Clock Phase -	 * SPCR0[08..15] = 14 1.4MHz -	 */ -	qsmcm->qsmcm_spcr0=0xA00E; -	/* -------------------------------------------- -	 * Controll Register 1 -	 * SPCR1[00] = 0 (0x0000) QSPI enabled -	 * SPCR1[1..7] =  (0x7F00) Delay before Transfer -	 * SPCR1[8..15] = (0x0000) Delay After transfer (204.8usec@40MHz) -	 */ -	qsmcm->qsmcm_spcr1=0x7F00; -	/* -------------------------------------------- -	 * Controll Register 2 -	 * SPCR2[00] = 0 (0x0000) SPI IRQs Disabeld -	 * SPCR2[01] = 0 (0x0000) No Wrap around -	 * SPCR2[02] = 0 (0x0000) Wrap to 0 -	 * SPCR2[3..7] = (0x0000) End Queue pointer = 0 -	 * SPCR2[8..10] = 0 (0x0000) reserved -	 * SPCR2[11..15] = 0 (0x0000) NewQueue Address = 0 -	 */ -	qsmcm->qsmcm_spcr2=0x0000; -	/* -------------------------------------------- -	 * Controll Register 3 -	 * SPCR3[00..04] = 0 (0x0000) reserved -	 * SPCR3[05] = 0 (0x0000) Feedback disabled -	 * SPCR3[06] = 0 (0x0000) IRQ on HALTA & MODF disabled -	 * SPCR3[07] = 0 (0x0000) Not halted -	 */ -	qsmcm->qsmcm_spcr3=0x00; -	/* -------------------------------------------- -	 * SPSR (Controll Register 3) Read only/ reset Flags 08,09,10 -	 * SPCR3[08] = 1 (0x80) QSPI finished -	 * SPCR3[09] = 1 (0x40) Mode Fault Flag -	 * SPCR3[10] = 1 (0x20) HALTA -	 * SPCR3[11..15] = 0 (0x0000) Last executed command -	 */ -	qsmcm->qsmcm_spsr=0xE0; -	/*------------------------------------------- -	 * Setup RAM -	 */ -	for(i=0;i<32;i++) { -		 qsmcm->qsmcm_recram[i]=0x0000; -		 qsmcm->qsmcm_tranram[i]=0x0000; -		 qsmcm->qsmcm_comdram[i]=0x00; -	} -	return; -} - -/* ************************************************************************** - * - *  Function:    spi_init_r - *  Dummy, all initializations have been done in spi_init_r - * *********************************************************************** */ -void spi_init_r (void) -{ -	return; - -} - -/**************************************************************************** - *  Function:    spi_write - **************************************************************************** */ -ssize_t short_spi_write (uchar *addr, int alen, uchar *buffer, int len) -{ -	int i,dlen; -	volatile immap_t *immr; -	volatile qsmcm5xx_t *qsmcm; - -	immr = (immap_t *)  CONFIG_SYS_IMMR; -	qsmcm = (qsmcm5xx_t *)&immr->im_qsmcm; -	for(i=0;i<32;i++) { -		 qsmcm->qsmcm_recram[i]=0x0000; -		 qsmcm->qsmcm_tranram[i]=0x0000; -		 qsmcm->qsmcm_comdram[i]=0x00; -	} -	qsmcm->qsmcm_tranram[0] =  SPI_EEPROM_WREN; /* write enable */ -	spi_xfer(1); -	i=0; -	qsmcm->qsmcm_tranram[i++] =  SPI_EEPROM_WRITE; /* WRITE memory array */ -	qsmcm->qsmcm_tranram[i++] =  addr[0]; -	qsmcm->qsmcm_tranram[i++] =  addr[1]; - -	for(dlen=0;dlen<len;dlen++) { -		qsmcm->qsmcm_tranram[i+dlen] = buffer[dlen]; /* WRITE memory array */ -	} -	/* transmit it */ -	spi_xfer(i+dlen); -	/* ignore received data	*/ -	for (i = 0; i < 1000; i++) { -		qsmcm->qsmcm_tranram[0] =  SPI_EEPROM_RDSR; /* read status */ -		qsmcm->qsmcm_tranram[1] = 0; -		spi_xfer(2); -		if (!(qsmcm->qsmcm_recram[1] & 1)) { -			break; -		} -		udelay(1000); -	} -	if (i >= 1000) { -		printf ("*** spi_write: Time out while writing!\n"); -	} -	return len; -} - -#define TRANSFER_LEN 16 - -ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len) -{ -	int index,i,newlen; -	uchar newaddr[2]; -	int curraddr; - -	curraddr=(addr[alen-2]<<8)+addr[alen-1]; -	i=len; -	index=0; -	do { -		newaddr[1]=(curraddr & 0xff); -		newaddr[0]=((curraddr>>8) & 0xff); -		if(i>TRANSFER_LEN) { -			newlen=TRANSFER_LEN; -			i-=TRANSFER_LEN; -		} -		else { -			newlen=i; -			i=0; -		} -		short_spi_write (newaddr, 2, &buffer[index], newlen); -		index+=newlen; -		curraddr+=newlen; -	}while(i); -	return (len); -} - -/**************************************************************************** - *  Function:    spi_read - **************************************************************************** */ -ssize_t short_spi_read (uchar *addr, int alen, uchar *buffer, int len) -{ -	int i; -	volatile immap_t *immr; -	volatile qsmcm5xx_t *qsmcm; - -	immr = (immap_t *)  CONFIG_SYS_IMMR; -	qsmcm = (qsmcm5xx_t *)&immr->im_qsmcm; - -	for(i=0;i<32;i++) { -		 qsmcm->qsmcm_recram[i]=0x0000; -		 qsmcm->qsmcm_tranram[i]=0x0000; -		 qsmcm->qsmcm_comdram[i]=0x00; -	} -	i=0; -	qsmcm->qsmcm_tranram[i++] = (SPI_EEPROM_READ); /* READ memory array */ -	qsmcm->qsmcm_tranram[i++] = addr[0] & 0xff; -	qsmcm->qsmcm_tranram[i++] = addr[1] & 0xff; -	spi_xfer(3 + len); -	for(i=0;i<len;i++) { -		*buffer++=(char)qsmcm->qsmcm_recram[i+3]; -	} -	return len; -} - -ssize_t spi_read (uchar *addr, int alen, uchar *buffer, int len) -{ -	int index,i,newlen; -	uchar newaddr[2]; -	int curraddr; - -	curraddr=(addr[alen-2]<<8)+addr[alen-1]; -	i=len; -	index=0; -	do { -		newaddr[1]=(curraddr & 0xff); -		newaddr[0]=((curraddr>>8) & 0xff); -		if(i>TRANSFER_LEN) { -			newlen=TRANSFER_LEN; -			i-=TRANSFER_LEN; -		} -		else { -			newlen=i; -			i=0; -		} -		short_spi_read (newaddr, 2, &buffer[index], newlen); -		index+=newlen; -		curraddr+=newlen; -	}while(i); -	return (len); -} - -/**************************************************************************** - *  Function:    spi_xfer - **************************************************************************** */ -ssize_t spi_xfer (size_t count) -{ -	volatile immap_t *immr; -	volatile qsmcm5xx_t *qsmcm; -	int i; -	int tm; -	ushort status; -	immr = (immap_t *)  CONFIG_SYS_IMMR; -	qsmcm = (qsmcm5xx_t *)&immr->im_qsmcm; -	DPRINT (("*** spi_xfer entered count %d***\n",count)); - -	/* Set CS for device */ -	for(i=0;i<(count-1);i++) -		qsmcm->qsmcm_comdram[i] = 0x80 | CONFIG_SYS_SPI_CS_ACT;  /* CS3 is connected to the SPI EEPROM */ - -	qsmcm->qsmcm_comdram[i] = CONFIG_SYS_SPI_CS_ACT; /* CS3 is connected to the SPI EEPROM */ -	qsmcm->qsmcm_spcr2=((count-1)&0x1F)<<8; - -	DPRINT (("*** spi_xfer: Bytes to be xferred: %d ***\n", count)); - -	qsmcm->qsmcm_spsr=0xE0; /* clear all flags */ - -	/* start spi transfer */ -	DPRINT (("*** spi_xfer: Performing transfer ...\n")); -	qsmcm->qsmcm_spcr1 |= 0x8000;		/* Start transmit */ - -	/* -------------------------------- -	 * Wait for SPI transmit to get out -	 * or time out (1 second = 1000 ms) -	 * -------------------------------- */ -	for (tm=0; tm<1000; ++tm) { -		status=qsmcm->qsmcm_spcr1; -		if((status & 0x8000)==0) -			break; -		udelay (1000); -	} -	if (tm >= 1000) { -		printf ("*** spi_xfer: Time out while xferring to/from SPI!\n"); -	} -#ifdef	DEBUG -	printf ("\nspi_xfer: txbuf after xfer\n"); -	memdump ((void *) qsmcm->qsmcm_tranram, 32);	/* dump of txbuf before transmit */ -	printf ("spi_xfer: rxbuf after xfer\n"); -	memdump ((void *) qsmcm->qsmcm_recram, 32);	/* dump of rxbuf after transmit */ -	printf ("\nspi_xfer: commbuf after xfer\n"); -	memdump ((void *) qsmcm->qsmcm_comdram, 32);	/* dump of txbuf before transmit */ -	printf ("\n"); -#endif - -	return count; -} - -#endif	/* CONFIG_SPI  */ |