/* * (C) Copyright 2000 - 2003 * 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 * * Hacked for MPC8260 by Murray.Jensen@cmst.csiro.au, 19-Oct-00, with * changes based on the file arch/ppc/mbxboot/m8260_tty.c from the * Linux/PPC sources (m8260_tty.c had no copyright info in it). * * Martin Krause, 8 Jun 2006 * Added CONFIG_SERIAL_MULTI support */ /* * Minimal serial functions needed to use one of the PSC ports * as serial console interface. */ #include <common.h> #include <mpc5xxx.h> #if defined (CONFIG_SERIAL_MULTI) #include <serial.h> #endif DECLARE_GLOBAL_DATA_PTR; #if defined(CONFIG_PSC_CONSOLE) #if CONFIG_PSC_CONSOLE == 1 #define PSC_BASE MPC5XXX_PSC1 #elif CONFIG_PSC_CONSOLE == 2 #define PSC_BASE MPC5XXX_PSC2 #elif CONFIG_PSC_CONSOLE == 3 #define PSC_BASE MPC5XXX_PSC3 #elif defined(CONFIG_MGT5100) #error CONFIG_PSC_CONSOLE must be in 1, 2 or 3 #elif CONFIG_PSC_CONSOLE == 4 #define PSC_BASE MPC5XXX_PSC4 #elif CONFIG_PSC_CONSOLE == 5 #define PSC_BASE MPC5XXX_PSC5 #elif CONFIG_PSC_CONSOLE == 6 #define PSC_BASE MPC5XXX_PSC6 #else #error CONFIG_PSC_CONSOLE must be in 1 ... 6 #endif #if defined(CONFIG_SERIAL_MULTI) && !defined(CONFIG_PSC_CONSOLE2) #error you must define CONFIG_PSC_CONSOLE2 if CONFIG_SERIAL_MULTI is set #endif #if defined(CONFIG_SERIAL_MULTI) #if CONFIG_PSC_CONSOLE2 == 1 #define PSC_BASE2 MPC5XXX_PSC1 #elif CONFIG_PSC_CONSOLE2 == 2 #define PSC_BASE2 MPC5XXX_PSC2 #elif CONFIG_PSC_CONSOLE2 == 3 #define PSC_BASE2 MPC5XXX_PSC3 #elif defined(CONFIG_MGT5100) #error CONFIG_PSC_CONSOLE2 must be in 1, 2 or 3 #elif CONFIG_PSC_CONSOLE2 == 4 #define PSC_BASE2 MPC5XXX_PSC4 #elif CONFIG_PSC_CONSOLE2 == 5 #define PSC_BASE2 MPC5XXX_PSC5 #elif CONFIG_PSC_CONSOLE2 == 6 #define PSC_BASE2 MPC5XXX_PSC6 #else #error CONFIG_PSC_CONSOLE2 must be in 1 ... 6 #endif #endif /* CONFIG_SERIAL_MULTI */ #if defined(CONFIG_SERIAL_MULTI) int serial_init_dev (unsigned long dev_base) #else int serial_init (void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif unsigned long baseclk; int div; /* reset PSC */ psc->command = PSC_SEL_MODE_REG_1; /* select clock sources */ #if defined(CONFIG_MGT5100) psc->psc_clock_select = 0xdd00; baseclk = (CFG_MPC5XXX_CLKIN + 16) / 32; #elif defined(CONFIG_MPC5200) psc->psc_clock_select = 0; baseclk = (gd->ipb_clk + 16) / 32; #endif /* switch to UART mode */ psc->sicr = 0; /* configure parity, bit length and so on */ #if defined(CONFIG_MGT5100) psc->mode = PSC_MODE_ERR | PSC_MODE_8_BITS | PSC_MODE_PARNONE; #elif defined(CONFIG_MPC5200) psc->mode = PSC_MODE_8_BITS | PSC_MODE_PARNONE; #endif psc->mode = PSC_MODE_ONE_STOP; /* set up UART divisor */ div = (baseclk + (gd->baudrate/2)) / gd->baudrate; psc->ctur = (div >> 8) & 0xff; psc->ctlr = div & 0xff; /* disable all interrupts */ psc->psc_imr = 0; /* reset and enable Rx/Tx */ psc->command = PSC_RST_RX; psc->command = PSC_RST_TX; psc->command = PSC_RX_ENABLE | PSC_TX_ENABLE; return (0); } #if defined(CONFIG_SERIAL_MULTI) void serial_putc_dev (unsigned long dev_base, const char c) #else void serial_putc(const char c) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif if (c == '\n') #if defined(CONFIG_SERIAL_MULTI) serial_putc_dev (dev_base, '\r'); #else serial_putc('\r'); #endif /* Wait for last character to go. */ while (!(psc->psc_status & PSC_SR_TXEMP)) ; psc->psc_buffer_8 = c; } #if defined(CONFIG_SERIAL_MULTI) void serial_putc_raw_dev(unsigned long dev_base, const char c) #else void serial_putc_raw(const char c) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif /* Wait for last character to go. */ while (!(psc->psc_status & PSC_SR_TXEMP)) ; psc->psc_buffer_8 = c; } #if defined(CONFIG_SERIAL_MULTI) void serial_puts_dev (unsigned long dev_base, const char *s) #else void serial_puts (const char *s) #endif { while (*s) { #if defined(CONFIG_SERIAL_MULTI) serial_putc_dev (dev_base, *s++); #else serial_putc (*s++); #endif } } #if defined(CONFIG_SERIAL_MULTI) int serial_getc_dev (unsigned long dev_base) #else int serial_getc(void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif /* Wait for a character to arrive. */ while (!(psc->psc_status & PSC_SR_RXRDY)) ; return psc->psc_buffer_8; } #if defined(CONFIG_SERIAL_MULTI) int serial_tstc_dev (unsigned long dev_base) #else int serial_tstc(void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif return (psc->psc_status & PSC_SR_RXRDY); } #if defined(CONFIG_SERIAL_MULTI) void serial_setbrg_dev (unsigned long dev_base) #else void serial_setbrg(void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif unsigned long baseclk, div; #if defined(CONFIG_MGT5100) baseclk = (CFG_MPC5XXX_CLKIN + 16) / 32; #elif defined(CONFIG_MPC5200) baseclk = (gd->ipb_clk + 16) / 32; #endif /* set up UART divisor */ div = (baseclk + (gd->baudrate/2)) / gd->baudrate; psc->ctur = (div >> 8) & 0xFF; psc->ctlr = div & 0xff; } #if defined(CONFIG_SERIAL_MULTI) void serial_setrts_dev (unsigned long dev_base, int s) #else void serial_setrts(int s) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif if (s) { /* Assert RTS (become LOW) */ psc->op1 = 0x1; } else { /* Negate RTS (become HIGH) */ psc->op0 = 0x1; } } #if defined(CONFIG_SERIAL_MULTI) int serial_getcts_dev (unsigned long dev_base) #else int serial_getcts(void) #endif { #if defined(CONFIG_SERIAL_MULTI) volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; #else volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; #endif return (psc->ip & 0x1) ? 0 : 1; } #if defined(CONFIG_SERIAL_MULTI) int serial0_init(void) { return (serial_init_dev(PSC_BASE)); } int serial1_init(void) { return (serial_init_dev(PSC_BASE2)); } void serial0_setbrg (void) { serial_setbrg_dev(PSC_BASE); } void serial1_setbrg (void) { serial_setbrg_dev(PSC_BASE2); } void serial0_putc(const char c) { serial_putc_dev(PSC_BASE,c); } void serial1_putc(const char c) { serial_putc_dev(PSC_BASE2, c); } void serial0_puts(const char *s) { serial_puts_dev(PSC_BASE, s); } void serial1_puts(const char *s) { serial_puts_dev(PSC_BASE2, s); } int serial0_getc(void) { return(serial_getc_dev(PSC_BASE)); } int serial1_getc(void) { return(serial_getc_dev(PSC_BASE2)); } int serial0_tstc(void) { return (serial_tstc_dev(PSC_BASE)); } int serial1_tstc(void) { return (serial_tstc_dev(PSC_BASE2)); } struct serial_device serial0_device = { "serial0", "UART0", serial0_init, serial0_setbrg, serial0_getc, serial0_tstc, serial0_putc, serial0_puts, }; struct serial_device serial1_device = { "serial1", "UART1", serial1_init, serial1_setbrg, serial1_getc, serial1_tstc, serial1_putc, serial1_puts, }; #endif /* CONFIG_SERIAL_MULTI */ #endif /* CONFIG_PSC_CONSOLE */