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a47a12becf
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
126 lines
3 KiB
C
126 lines
3 KiB
C
/*
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* (C) Copyright 2004, Freescale, Inc
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* TsiChung Liew, Tsi-Chung.Liew@freescale.com.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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/*
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* Minimal serial functions needed to use one of the PSC ports
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* as serial console interface.
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*/
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#include <common.h>
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#include <mpc8220.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define PSC_BASE MMAP_PSC1
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#if defined(CONFIG_PSC_CONSOLE)
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int serial_init (void)
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{
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volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
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u32 counter;
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/* write to SICR: SIM2 = uart mode,dcd does not affect rx */
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psc->cr = 0;
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psc->ipcr_acr = 0;
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psc->isr_imr = 0;
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/* write to CSR: RX/TX baud rate from timers */
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psc->sr_csr = 0xdd000000;
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psc->mr1_2 = PSC_MR1_BITS_CHAR_8 | PSC_MR1_NO_PARITY | PSC_MR2_STOP_BITS_1;
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/* Setting up BaudRate */
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counter = ((gd->bus_clk / gd->baudrate)) >> 5;
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counter++;
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/* write to CTUR: divide counter upper byte */
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psc->ctur = ((counter & 0xff00) << 16);
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/* write to CTLR: divide counter lower byte */
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psc->ctlr = ((counter & 0x00ff) << 24);
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psc->cr = PSC_CR_RST_RX_CMD;
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psc->cr = PSC_CR_RST_TX_CMD;
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psc->cr = PSC_CR_RST_ERR_STS_CMD;
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psc->cr = PSC_CR_RST_BRK_INT_CMD;
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psc->cr = PSC_CR_RST_MR_PTR_CMD;
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psc->cr = PSC_CR_RX_ENABLE | PSC_CR_TX_ENABLE;
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return (0);
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}
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void serial_putc (const char c)
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{
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volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
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if (c == '\n')
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serial_putc ('\r');
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/* Wait for last character to go. */
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while (!(psc->sr_csr & PSC_SR_TXRDY));
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psc->xmitbuf[0] = c;
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}
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void serial_puts (const char *s)
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{
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while (*s) {
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serial_putc (*s++);
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}
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}
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int serial_getc (void)
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{
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volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
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/* Wait for a character to arrive. */
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while (!(psc->sr_csr & PSC_SR_RXRDY));
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return psc->xmitbuf[2];
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}
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int serial_tstc (void)
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{
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volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
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return (psc->sr_csr & PSC_SR_RXRDY);
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}
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void serial_setbrg (void)
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{
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volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
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u32 counter;
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counter = ((gd->bus_clk / gd->baudrate)) >> 5;
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counter++;
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/* write to CTUR: divide counter upper byte */
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psc->ctur = ((counter & 0xff00) << 16);
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/* write to CTLR: divide counter lower byte */
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psc->ctlr = ((counter & 0x00ff) << 24);
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psc->cr = PSC_CR_RST_RX_CMD;
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psc->cr = PSC_CR_RST_TX_CMD;
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psc->cr = PSC_CR_RX_ENABLE | PSC_CR_TX_ENABLE;
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}
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#endif /* CONFIG_PSC_CONSOLE */
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