patch-2.4.5 linux/arch/ppc/mbxboot/m8260_tty.c

• Lines: 202
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.4/linux/arch/ppc/mbxboot/m8260_tty.c
• Orig date: Mon Jun 19 17:59:36 2000

diff -u --recursive --new-file v2.4.4/linux/arch/ppc/mbxboot/m8260_tty.c linux/arch/ppc/mbxboot/m8260_tty.c
@@ -1,201 +0,0 @@
-
-
-/* Minimal serial functions needed to send messages out the serial
- * port on SMC1.
- */
-#include <linux/types.h>
-#include "asm/mpc8260.h"
-#include "asm/cpm_8260.h"
-
-uint	no_print;
-extern char	*params[];
-extern int	nparams;
-static		u_char	cons_hold[128], *sgptr;
-static		int	cons_hold_cnt;
-
-void
-serial_init(bd_t *bd)
-{
-	volatile smc_t		*sp;
-	volatile smc_uart_t	*up;
-	volatile cbd_t	*tbdf, *rbdf;
-	volatile immap_t	*ip;
-	volatile iop8260_t	*io;
-	volatile cpm8260_t	*cp;
-	uint	dpaddr, memaddr;
-
-	ip = (immap_t *)IMAP_ADDR;
-
-	sp = (smc_t*)&(ip->im_smc[0]);
-	*(ushort *)(&ip->im_dprambase[PROFF_SMC1_BASE]) = PROFF_SMC1;
-	up = (smc_uart_t *)&ip->im_dprambase[PROFF_SMC1];
-
-	cp = &ip->im_cpm;
-	io = &ip->im_ioport;
-
-	/* Disable transmitter/receiver.
-	*/
-	sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
-
-	/* Use Port D for SMC1 instead of other functions.
-	*/
-	io->iop_ppard |= 0x00c00000;
-	io->iop_pdird |= 0x00400000;
-	io->iop_pdird &= ~0x00800000;
-	io->iop_psord &= ~0x00c00000;
-
-	/* Allocate space for two buffer descriptors in the DP ram.
-	 * For now, this address seems OK, but it may have to
-	 * change with newer versions of the firmware.
-	 */
-	dpaddr = 0x0800;
-
-	/* Grab a few bytes from the top of memory.
-	 */
-#if 1
-	memaddr = (bd->bi_memsize - 256) & ~15;
-#else
-	memaddr = 0x0f002c00;
-#endif
-
-	/* Set the physical address of the host memory buffers in
-	 * the buffer descriptors.
-	 */
-	rbdf = (cbd_t *)&ip->im_dprambase[dpaddr];
-	rbdf->cbd_bufaddr = memaddr;
-	rbdf->cbd_sc = 0;
-	tbdf = rbdf + 1;
-	tbdf->cbd_bufaddr = memaddr+128;
-	tbdf->cbd_sc = 0;
-
-	/* Set up the uart parameters in the parameter ram.
-	*/
-	up->smc_rbase = dpaddr;
-	up->smc_tbase = dpaddr+sizeof(cbd_t);
-	up->smc_rfcr = CPMFCR_EB;
-	up->smc_tfcr = CPMFCR_EB;
-	up->smc_brklen = 0;
-	up->smc_brkec = 0;
-	up->smc_brkcr = 0;
-
-	/* Set UART mode, 8 bit, no parity, one stop.
-	 * Enable receive and transmit.
-	 */
-	sp->smc_smcmr = smcr_mk_clen(9) |  SMCMR_SM_UART;
-
-	/* Mask all interrupts and remove anything pending.
-	*/
-	sp->smc_smcm = 0;
-	sp->smc_smce = 0xff;
-
-	/* Set up the baud rate generator.
-	 */
-	ip->im_clkrst.car_sccr = 0;	/* DIV 4 BRG */
-	ip->im_cpmux.cmx_smr = 0;
-	ip->im_brgc1 =
-		((((bd->bi_brgfreq * 1000000)/16) / bd->bi_baudrate) << 1) |
-								CPM_BRG_EN;
-
-	/* Make the first buffer the only buffer.
-	*/
-	tbdf->cbd_sc |= BD_SC_WRAP;
-	rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
-
-#if 0
-	/* Single character receive.
-	*/
-	up->smc_mrblr = 1;
-	up->smc_maxidl = 0;
-#else
-	up->smc_mrblr = 128;
-	up->smc_maxidl = 8;
-#endif
-
-	/* Initialize Tx/Rx parameters.
-	*/
-	cp->cp_cpcr = mk_cr_cmd(CPM_CR_SMC1_PAGE, CPM_CR_SMC1_SBLOCK, 0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
-	while (cp->cp_cpcr & CPM_CR_FLG);
-
-	/* Enable transmitter/receiver.
-	*/
-	sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
-}
-
-void
-serial_putchar(const char c)
-{
-	volatile cbd_t		*tbdf;
-	volatile char		*buf;
-	volatile smc_uart_t	*up;
-	volatile immap_t	*ip;
-	extern bd_t		*board_info;
-
-	ip = (immap_t *)IMAP_ADDR;
-	up = (smc_uart_t *)&(ip->im_dprambase[PROFF_SMC1]);
-	tbdf = (cbd_t *)&ip->im_dprambase[up->smc_tbase];
-
-	/* Wait for last character to go.
-	*/
-	buf = (char *)tbdf->cbd_bufaddr;
-	while (tbdf->cbd_sc & BD_SC_READY);
-
-	*buf = c;
-	tbdf->cbd_datlen = 1;
-	tbdf->cbd_sc |= BD_SC_READY;
-}
-
-char
-serial_getc()
-{
-	char	c;
-
-	if (cons_hold_cnt <= 0) {
-		cons_hold_cnt = serial_readbuf(cons_hold);
-		sgptr = cons_hold;
-	}
-	c = *sgptr++;
-	cons_hold_cnt--;
-
-	return(c);
-}
-
-int
-serial_readbuf(u_char *cbuf)
-{
-	volatile cbd_t		*rbdf;
-	volatile char		*buf;
-	volatile smc_uart_t	*up;
-	volatile immap_t	*ip;
-	int	i, nc;
-
-	ip = (immap_t *)IMAP_ADDR;
-
-	up = (smc_uart_t *)&(ip->im_dprambase[PROFF_SMC1]);
-	rbdf = (cbd_t *)&ip->im_dprambase[up->smc_rbase];
-
-	/* Wait for character to show up.
-	*/
-	buf = (char *)rbdf->cbd_bufaddr;
-	while (rbdf->cbd_sc & BD_SC_EMPTY);
-	nc = rbdf->cbd_datlen;
-	for (i=0; i<nc; i++)
-		*cbuf++ = *buf++;
-	rbdf->cbd_sc |= BD_SC_EMPTY;
-
-	return(nc);
-}
-
-int
-serial_tstc()
-{
-	volatile cbd_t		*rbdf;
-	volatile smc_uart_t	*up;
-	volatile immap_t	*ip;
-
-	ip = (immap_t *)IMAP_ADDR;
-	up = (smc_uart_t *)&(ip->im_dprambase[PROFF_SMC1]);
-	rbdf = (cbd_t *)&ip->im_dprambase[up->smc_rbase];
-
-	return(!(rbdf->cbd_sc & BD_SC_EMPTY));
-}
-