--- /dev/null
+/*
+ * (C) Copyright 2000-2006
+ * 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
+ */
+/*------------------------------------------------------------------------------+ */
+/*
+ * This source code has been made available to you by IBM on an AS-IS
+ * basis. Anyone receiving this source is licensed under IBM
+ * copyrights to use it in any way he or she deems fit, including
+ * copying it, modifying it, compiling it, and redistributing it either
+ * with or without modifications. No license under IBM patents or
+ * patent applications is to be implied by the copyright license.
+ *
+ * Any user of this software should understand that IBM cannot provide
+ * technical support for this software and will not be responsible for
+ * any consequences resulting from the use of this software.
+ *
+ * Any person who transfers this source code or any derivative work
+ * must include the IBM copyright notice, this paragraph, and the
+ * preceding two paragraphs in the transferred software.
+ *
+ * COPYRIGHT I B M CORPORATION 1995
+ * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
+ */
+/*------------------------------------------------------------------------------- */
+/*
+ * Travis Sawyer 15 September 2004
+ * Added CONFIG_SERIAL_MULTI support
+ */
+#include <common.h>
+#include <commproc.h>
+#include <asm/processor.h>
+#include <watchdog.h>
+#include "vecnum.h"
+
+#ifdef CONFIG_SERIAL_MULTI
+#include <serial.h>
+#endif
+
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
+#include <malloc.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || \
+ defined(CONFIG_405EP) || defined(CONFIG_405EZ) || \
+ defined(CONFIG_405EX) || defined(CONFIG_440)
+
+#if defined(CONFIG_440)
+#if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
+ defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+#define UART0_BASE CFG_PERIPHERAL_BASE + 0x00000300
+#define UART1_BASE CFG_PERIPHERAL_BASE + 0x00000400
+#else
+#define UART0_BASE CFG_PERIPHERAL_BASE + 0x00000200
+#define UART1_BASE CFG_PERIPHERAL_BASE + 0x00000300
+#endif
+
+#if defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+#define UART2_BASE CFG_PERIPHERAL_BASE + 0x00000600
+#endif
+
+#if defined(CONFIG_440GP)
+#define CR0_MASK 0x3fff0000
+#define CR0_EXTCLK_ENA 0x00600000
+#define CR0_UDIV_POS 16
+#define UDIV_SUBTRACT 1
+#define UART0_SDR cntrl0
+#define MFREG(a, d) d = mfdcr(a)
+#define MTREG(a, d) mtdcr(a, d)
+#else /* #if defined(CONFIG_440GP) */
+/* all other 440 PPC's access clock divider via sdr register */
+#define CR0_MASK 0xdfffffff
+#define CR0_EXTCLK_ENA 0x00800000
+#define CR0_UDIV_POS 0
+#define UDIV_SUBTRACT 0
+#define UART0_SDR sdr_uart0
+#define UART1_SDR sdr_uart1
+#if defined(CONFIG_440EP) || defined(CONFIG_440EPx) || \
+ defined(CONFIG_440GR) || defined(CONFIG_440GRx) || \
+ defined(CONFIG_440SP) || defined(CONFIG_440SPe)
+#define UART2_SDR sdr_uart2
+#endif
+#if defined(CONFIG_440EP) || defined(CONFIG_440EPx) || \
+ defined(CONFIG_440GR) || defined(CONFIG_440GRx)
+#define UART3_SDR sdr_uart3
+#endif
+#define MFREG(a, d) mfsdr(a, d)
+#define MTREG(a, d) mtsdr(a, d)
+#endif /* #if defined(CONFIG_440GP) */
+#elif defined(CONFIG_405EP) || defined(CONFIG_405EZ)
+#define UART0_BASE 0xef600300
+#define UART1_BASE 0xef600400
+#define UCR0_MASK 0x0000007f
+#define UCR1_MASK 0x00007f00
+#define UCR0_UDIV_POS 0
+#define UCR1_UDIV_POS 8
+#define UDIV_MAX 127
+#elif defined(CONFIG_405EX)
+#define UART0_BASE 0xef600200
+#define UART1_BASE 0xef600300
+#define CR0_MASK 0x000000ff
+#define CR0_EXTCLK_ENA 0x00800000
+#define CR0_UDIV_POS 0
+#define UDIV_SUBTRACT 0
+#define UART0_SDR sdr_uart0
+#define UART1_SDR sdr_uart1
+#else /* CONFIG_405GP || CONFIG_405CR */
+#define UART0_BASE 0xef600300
+#define UART1_BASE 0xef600400
+#define CR0_MASK 0x00001fff
+#define CR0_EXTCLK_ENA 0x000000c0
+#define CR0_UDIV_POS 1
+#define UDIV_MAX 32
+#endif
+
+/* using serial port 0 or 1 as U-Boot console ? */
+#if defined(CONFIG_UART1_CONSOLE)
+#define ACTING_UART0_BASE UART1_BASE
+#define ACTING_UART1_BASE UART0_BASE
+#else
+#define ACTING_UART0_BASE UART0_BASE
+#define ACTING_UART1_BASE UART1_BASE
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+#define UART_BASE dev_base
+#else
+#define UART_BASE ACTING_UART0_BASE
+#endif
+
+#if defined(CONFIG_405EP) && defined(CFG_EXT_SERIAL_CLOCK)
+#error "External serial clock not supported on AMCC PPC405EP!"
+#endif
+
+#define UART_RBR 0x00
+#define UART_THR 0x00
+#define UART_IER 0x01
+#define UART_IIR 0x02
+#define UART_FCR 0x02
+#define UART_LCR 0x03
+#define UART_MCR 0x04
+#define UART_LSR 0x05
+#define UART_MSR 0x06
+#define UART_SCR 0x07
+#define UART_DLL 0x00
+#define UART_DLM 0x01
+
+/*-----------------------------------------------------------------------------+
+ | Line Status Register.
+ +-----------------------------------------------------------------------------*/
+/*#define asyncLSRport1 ACTING_UART0_BASE+0x05 */
+#define asyncLSRDataReady1 0x01
+#define asyncLSROverrunError1 0x02
+#define asyncLSRParityError1 0x04
+#define asyncLSRFramingError1 0x08
+#define asyncLSRBreakInterrupt1 0x10
+#define asyncLSRTxHoldEmpty1 0x20
+#define asyncLSRTxShiftEmpty1 0x40
+#define asyncLSRRxFifoError1 0x80
+
+/*-----------------------------------------------------------------------------+
+ | Miscellanies defines.
+ +-----------------------------------------------------------------------------*/
+/*#define asyncTxBufferport1 ACTING_UART0_BASE+0x00 */
+/*#define asyncRxBufferport1 ACTING_UART0_BASE+0x00 */
+
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
+/*-----------------------------------------------------------------------------+
+ | Fifo
+ +-----------------------------------------------------------------------------*/
+typedef struct {
+ char *rx_buffer;
+ ulong rx_put;
+ ulong rx_get;
+} serial_buffer_t;
+
+volatile static serial_buffer_t buf_info;
+#endif
+
+#if (defined(CONFIG_440) || defined(CONFIG_405EX)) && \
+ !defined(CFG_EXT_SERIAL_CLOCK)
+static void serial_divs (int baudrate, unsigned long *pudiv,
+ unsigned short *pbdiv)
+{
+ sys_info_t sysinfo;
+ unsigned long div; /* total divisor udiv * bdiv */
+ unsigned long umin; /* minimum udiv */
+ unsigned short diff; /* smallest diff */
+ unsigned long udiv; /* best udiv */
+ unsigned short idiff; /* current diff */
+ unsigned short ibdiv; /* current bdiv */
+ unsigned long i;
+ unsigned long est; /* current estimate */
+
+ get_sys_info(&sysinfo);
+
+ udiv = 32; /* Assume lowest possible serial clk */
+ div = sysinfo.freqPLB / (16 * baudrate); /* total divisor */
+ umin = sysinfo.pllOpbDiv << 1; /* 2 x OPB divisor */
+ diff = 32; /* highest possible */
+
+ /* i is the test udiv value -- start with the largest
+ * possible (32) to minimize serial clock and constrain
+ * search to umin.
+ */
+ for (i = 32; i > umin; i--) {
+ ibdiv = div / i;
+ est = i * ibdiv;
+ idiff = (est > div) ? (est-div) : (div-est);
+ if (idiff == 0) {
+ udiv = i;
+ break; /* can't do better */
+ } else if (idiff < diff) {
+ udiv = i; /* best so far */
+ diff = idiff; /* update lowest diff*/
+ }
+ }
+
+ *pudiv = udiv;
+ *pbdiv = div / udiv;
+}
+
+#elif defined(CONFIG_405EZ)
+
+static void serial_divs (int baudrate, unsigned long *pudiv,
+ unsigned short *pbdiv)
+{
+ sys_info_t sysinfo;
+ unsigned long div; /* total divisor udiv * bdiv */
+ unsigned long umin; /* minimum udiv */
+ unsigned short diff; /* smallest diff */
+ unsigned long udiv; /* best udiv */
+ unsigned short idiff; /* current diff */
+ unsigned short ibdiv; /* current bdiv */
+ unsigned long i;
+ unsigned long est; /* current estimate */
+ unsigned long plloutb;
+ unsigned long cpr_pllc;
+ u32 reg;
+
+ /* check the pll feedback source */
+ mfcpr(cprpllc, cpr_pllc);
+
+ get_sys_info(&sysinfo);
+
+ plloutb = ((CONFIG_SYS_CLK_FREQ * ((cpr_pllc & PLLC_SRC_MASK) ?
+ sysinfo.pllFwdDivB : sysinfo.pllFwdDiv) * sysinfo.pllFbkDiv) /
+ sysinfo.pllFwdDivB);
+ udiv = 256; /* Assume lowest possible serial clk */
+ div = plloutb / (16 * baudrate); /* total divisor */
+ umin = (plloutb / get_OPB_freq()) << 1; /* 2 x OPB divisor */
+ diff = 256; /* highest possible */
+
+ /* i is the test udiv value -- start with the largest
+ * possible (256) to minimize serial clock and constrain
+ * search to umin.
+ */
+ for (i = 256; i > umin; i--) {
+ ibdiv = div / i;
+ est = i * ibdiv;
+ idiff = (est > div) ? (est-div) : (div-est);
+ if (idiff == 0) {
+ udiv = i;
+ break; /* can't do better */
+ } else if (idiff < diff) {
+ udiv = i; /* best so far */
+ diff = idiff; /* update lowest diff*/
+ }
+ }
+
+ *pudiv = udiv;
+ mfcpr(cprperd0, reg);
+ reg &= ~0x0000ffff;
+ reg |= ((udiv - 0) << 8) | (udiv - 0);
+ mtcpr(cprperd0, reg);
+ *pbdiv = div / udiv;
+}
+#endif /* defined(CONFIG_440) && !defined(CFG_EXT_SERIAL_CLK) */
+
+/*
+ * Minimal serial functions needed to use one of the SMC ports
+ * as serial console interface.
+ */
+
+#if defined(CONFIG_440)
+#if defined(CONFIG_SERIAL_MULTI)
+int serial_init_dev (unsigned long dev_base)
+#else
+int serial_init(void)
+#endif
+{
+ unsigned long reg;
+ unsigned long udiv;
+ unsigned short bdiv;
+ volatile char val;
+#ifdef CFG_EXT_SERIAL_CLOCK
+ unsigned long tmp;
+#endif
+
+ MFREG(UART0_SDR, reg);
+ reg &= ~CR0_MASK;
+
+#ifdef CFG_EXT_SERIAL_CLOCK
+ reg |= CR0_EXTCLK_ENA;
+ udiv = 1;
+ tmp = gd->baudrate * 16;
+ bdiv = (CFG_EXT_SERIAL_CLOCK + tmp / 2) / tmp;
+ gd->freqUART = CFG_EXT_SERIAL_CLOCK;
+#else
+ /* For 440, the cpu clock is on divider chain A, UART on divider
+ * chain B ... so cpu clock is irrelevant. Get the "optimized"
+ * values that are subject to the 1/2 opb clock constraint
+ */
+ serial_divs (gd->baudrate, &udiv, &bdiv);
+
+ /* Correct UART frequency in bd-info struct now that
+ * the UART divisor is available
+ */
+ gd->freqUART = gd->freqUART / udiv;
+#endif
+
+ reg |= (udiv - UDIV_SUBTRACT) << CR0_UDIV_POS; /* set the UART divisor */
+
+ /*
+ * Configure input clock to baudrate generator for all
+ * available serial ports here
+ */
+ MTREG(UART0_SDR, reg);
+#if defined(UART1_SDR)
+ MTREG(UART1_SDR, reg);
+#endif
+#if defined(UART2_SDR)
+ MTREG(UART2_SDR, reg);
+#endif
+#if defined(UART3_SDR)
+ MTREG(UART3_SDR, reg);
+#endif
+
+ out8(UART_BASE + UART_LCR, 0x80); /* set DLAB bit */
+ out8(UART_BASE + UART_DLL, bdiv); /* set baudrate divisor */
+ out8(UART_BASE + UART_DLM, bdiv >> 8); /* set baudrate divisor */
+ out8(UART_BASE + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
+ out8(UART_BASE + UART_FCR, 0x00); /* disable FIFO */
+ out8(UART_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
+ val = in8(UART_BASE + UART_LSR); /* clear line status */
+ val = in8(UART_BASE + UART_RBR); /* read receive buffer */
+ out8(UART_BASE + UART_SCR, 0x00); /* set scratchpad */
+ out8(UART_BASE + UART_IER, 0x00); /* set interrupt enable reg */
+
+ return (0);
+}
+
+#else /* !defined(CONFIG_440) */
+
+#if defined(CONFIG_SERIAL_MULTI)
+int serial_init_dev (unsigned long dev_base)
+#else
+int serial_init (void)
+#endif
+{
+ unsigned long reg;
+ unsigned long tmp;
+ unsigned long clk;
+ unsigned long udiv;
+ unsigned short bdiv;
+ volatile char val;
+
+#ifdef CONFIG_405EX
+ clk = tmp = 0;
+ mfsdr(UART0_SDR, reg);
+ reg &= ~CR0_MASK;
+#ifdef CFG_EXT_SERIAL_CLOCK
+ reg |= CR0_EXTCLK_ENA;
+ udiv = 1;
+ tmp = gd->baudrate * 16;
+ bdiv = (CFG_EXT_SERIAL_CLOCK + tmp / 2) / tmp;
+#else
+ serial_divs(gd->baudrate, &udiv, &bdiv);
+#endif
+ reg |= (udiv - UDIV_SUBTRACT) << CR0_UDIV_POS; /* set the UART divisor */
+
+ /*
+ * Configure input clock to baudrate generator for all
+ * available serial ports here
+ */
+ mtsdr(UART0_SDR, reg);
+
+#if defined(UART1_SDR)
+ mtsdr(UART1_SDR, reg);
+#endif
+
+#elif defined(CONFIG_405EZ)
+ serial_divs(gd->baudrate, &udiv, &bdiv);
+ clk = tmp = reg = 0;
+#else
+#ifdef CONFIG_405EP
+ reg = mfdcr(cpc0_ucr) & ~(UCR0_MASK | UCR1_MASK);
+ clk = gd->cpu_clk;
+ tmp = CFG_BASE_BAUD * 16;
+ udiv = (clk + tmp / 2) / tmp;
+ if (udiv > UDIV_MAX) /* max. n bits for udiv */
+ udiv = UDIV_MAX;
+ reg |= (udiv) << UCR0_UDIV_POS; /* set the UART divisor */
+ reg |= (udiv) << UCR1_UDIV_POS; /* set the UART divisor */
+ mtdcr (cpc0_ucr, reg);
+#else /* CONFIG_405EP */
+ reg = mfdcr(cntrl0) & ~CR0_MASK;
+#ifdef CFG_EXT_SERIAL_CLOCK
+ clk = CFG_EXT_SERIAL_CLOCK;
+ udiv = 1;
+ reg |= CR0_EXTCLK_ENA;
+#else
+ clk = gd->cpu_clk;
+#ifdef CFG_405_UART_ERRATA_59
+ udiv = 31; /* Errata 59: stuck at 31 */
+#else
+ tmp = CFG_BASE_BAUD * 16;
+ udiv = (clk + tmp / 2) / tmp;
+ if (udiv > UDIV_MAX) /* max. n bits for udiv */
+ udiv = UDIV_MAX;
+#endif
+#endif
+ reg |= (udiv - 1) << CR0_UDIV_POS; /* set the UART divisor */
+ mtdcr (cntrl0, reg);
+#endif /* CONFIG_405EP */
+ tmp = gd->baudrate * udiv * 16;
+ bdiv = (clk + tmp / 2) / tmp;
+#endif /* CONFIG_405EX */
+
+ /* Correct UART frequency in bd-info struct now that
+ * the UART divisor is available
+ */
+#ifdef CFG_EXT_SERIAL_CLOCK
+ gd->freqUART = CFG_EXT_SERIAL_CLOCK;
+#else
+ gd->freqUART = gd->freqUART / udiv;
+#endif
+
+ out8(UART_BASE + UART_LCR, 0x80); /* set DLAB bit */
+ out8(UART_BASE + UART_DLL, bdiv); /* set baudrate divisor */
+ out8(UART_BASE + UART_DLM, bdiv >> 8); /* set baudrate divisor */
+ out8(UART_BASE + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
+ out8(UART_BASE + UART_FCR, 0x00); /* disable FIFO */
+ out8(UART_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
+ val = in8(UART_BASE + UART_LSR); /* clear line status */
+ val = in8(UART_BASE + UART_RBR); /* read receive buffer */
+ out8(UART_BASE + UART_SCR, 0x00); /* set scratchpad */
+ out8(UART_BASE + UART_IER, 0x00); /* set interrupt enable reg */
+
+ return (0);
+}
+
+#endif /* if defined(CONFIG_440) */
+
+#if defined(CONFIG_SERIAL_MULTI)
+void serial_setbrg_dev (unsigned long dev_base)
+#else
+void serial_setbrg (void)
+#endif
+{
+#if defined(CONFIG_SERIAL_MULTI)
+ serial_init_dev(dev_base);
+#else
+ serial_init();
+#endif
+}
+
+#if defined(CONFIG_SERIAL_MULTI)
+void serial_putc_dev (unsigned long dev_base, const char c)
+#else
+void serial_putc (const char c)
+#endif
+{
+ int i;
+
+ if (c == '\n')
+#if defined(CONFIG_SERIAL_MULTI)
+ serial_putc_dev (dev_base, '\r');
+#else
+ serial_putc ('\r');
+#endif
+
+ /* check THRE bit, wait for transmiter available */
+ for (i = 1; i < 3500; i++) {
+ if ((in8 (UART_BASE + UART_LSR) & 0x20) == 0x20)
+ break;
+ udelay (100);
+ }
+ out8 (UART_BASE + UART_THR, c); /* put character out */
+}
+
+#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
+{
+ unsigned char status = 0;
+
+ while (1) {
+#if defined(CONFIG_HW_WATCHDOG)
+ WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
+#endif /* CONFIG_HW_WATCHDOG */
+ status = in8 (UART_BASE + UART_LSR);
+ if ((status & asyncLSRDataReady1) != 0x0) {
+ break;
+ }
+ if ((status & ( asyncLSRFramingError1 |
+ asyncLSROverrunError1 |
+ asyncLSRParityError1 |
+ asyncLSRBreakInterrupt1 )) != 0) {
+ out8 (UART_BASE + UART_LSR,
+ asyncLSRFramingError1 |
+ asyncLSROverrunError1 |
+ asyncLSRParityError1 |
+ asyncLSRBreakInterrupt1);
+ }
+ }
+ return (0x000000ff & (int) in8 (UART_BASE));
+}
+
+#if defined(CONFIG_SERIAL_MULTI)
+int serial_tstc_dev (unsigned long dev_base)
+#else
+int serial_tstc (void)
+#endif
+{
+ unsigned char status;
+
+ status = in8 (UART_BASE + UART_LSR);
+ if ((status & asyncLSRDataReady1) != 0x0) {
+ return (1);
+ }
+ if ((status & ( asyncLSRFramingError1 |
+ asyncLSROverrunError1 |
+ asyncLSRParityError1 |
+ asyncLSRBreakInterrupt1 )) != 0) {
+ out8 (UART_BASE + UART_LSR,
+ asyncLSRFramingError1 |
+ asyncLSROverrunError1 |
+ asyncLSRParityError1 |
+ asyncLSRBreakInterrupt1);
+ }
+ return 0;
+}
+
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
+
+void serial_isr (void *arg)
+{
+ int space;
+ int c;
+ const int rx_get = buf_info.rx_get;
+ int rx_put = buf_info.rx_put;
+
+ if (rx_get <= rx_put) {
+ space = CONFIG_SERIAL_SOFTWARE_FIFO - (rx_put - rx_get);
+ } else {
+ space = rx_get - rx_put;
+ }
+ while (serial_tstc_dev (ACTING_UART0_BASE)) {
+ c = serial_getc_dev (ACTING_UART0_BASE);
+ if (space) {
+ buf_info.rx_buffer[rx_put++] = c;
+ space--;
+ }
+ if (rx_put == CONFIG_SERIAL_SOFTWARE_FIFO)
+ rx_put = 0;
+ if (space < CONFIG_SERIAL_SOFTWARE_FIFO / 4) {
+ /* Stop flow by setting RTS inactive */
+ out8 (ACTING_UART0_BASE + UART_MCR,
+ in8 (ACTING_UART0_BASE + UART_MCR) & (0xFF ^ 0x02));
+ }
+ }
+ buf_info.rx_put = rx_put;
+}
+
+void serial_buffered_init (void)
+{
+ serial_puts ("Switching to interrupt driven serial input mode.\n");
+ buf_info.rx_buffer = malloc (CONFIG_SERIAL_SOFTWARE_FIFO);
+ buf_info.rx_put = 0;
+ buf_info.rx_get = 0;
+
+ if (in8 (ACTING_UART0_BASE + UART_MSR) & 0x10) {
+ serial_puts ("Check CTS signal present on serial port: OK.\n");
+ } else {
+ serial_puts ("WARNING: CTS signal not present on serial port.\n");
+ }
+
+ irq_install_handler ( VECNUM_U0 /*UART0 */ /*int vec */ ,
+ serial_isr /*interrupt_handler_t *handler */ ,
+ (void *) &buf_info /*void *arg */ );
+
+ /* Enable "RX Data Available" Interrupt on UART */
+ /* out8(ACTING_UART0_BASE + UART_IER, in8(ACTING_UART0_BASE + UART_IER) |0x01); */
+ out8 (ACTING_UART0_BASE + UART_IER, 0x01);
+ /* Set DTR active */
+ out8 (ACTING_UART0_BASE + UART_MCR, in8 (ACTING_UART0_BASE + UART_MCR) | 0x01);
+ /* Start flow by setting RTS active */
+ out8 (ACTING_UART0_BASE + UART_MCR, in8 (ACTING_UART0_BASE + UART_MCR) | 0x02);
+ /* Setup UART FIFO: RX trigger level: 4 byte, Enable FIFO */
+ out8 (ACTING_UART0_BASE + UART_FCR, (1 << 6) | 1);
+}
+
+void serial_buffered_putc (const char c)
+{
+ /* Wait for CTS */
+#if defined(CONFIG_HW_WATCHDOG)
+ while (!(in8 (ACTING_UART0_BASE + UART_MSR) & 0x10))
+ WATCHDOG_RESET ();
+#else
+ while (!(in8 (ACTING_UART0_BASE + UART_MSR) & 0x10));
+#endif
+ serial_putc (c);
+}
+
+void serial_buffered_puts (const char *s)
+{
+ serial_puts (s);
+}
+
+int serial_buffered_getc (void)
+{
+ int space;
+ int c;
+ int rx_get = buf_info.rx_get;
+ int rx_put;
+
+#if defined(CONFIG_HW_WATCHDOG)
+ while (rx_get == buf_info.rx_put)
+ WATCHDOG_RESET ();
+#else
+ while (rx_get == buf_info.rx_put);
+#endif
+ c = buf_info.rx_buffer[rx_get++];
+ if (rx_get == CONFIG_SERIAL_SOFTWARE_FIFO)
+ rx_get = 0;
+ buf_info.rx_get = rx_get;
+
+ rx_put = buf_info.rx_put;
+ if (rx_get <= rx_put) {
+ space = CONFIG_SERIAL_SOFTWARE_FIFO - (rx_put - rx_get);
+ } else {
+ space = rx_get - rx_put;
+ }
+ if (space > CONFIG_SERIAL_SOFTWARE_FIFO / 2) {
+ /* Start flow by setting RTS active */
+ out8 (ACTING_UART0_BASE + UART_MCR, in8 (ACTING_UART0_BASE + UART_MCR) | 0x02);
+ }
+
+ return c;
+}
+
+int serial_buffered_tstc (void)
+{
+ return (buf_info.rx_get != buf_info.rx_put) ? 1 : 0;
+}
+
+#endif /* CONFIG_SERIAL_SOFTWARE_FIFO */
+
+#if defined(CONFIG_CMD_KGDB)
+/*
+ AS HARNOIS : according to CONFIG_KGDB_SER_INDEX kgdb uses serial port
+ number 0 or number 1
+ - if CONFIG_KGDB_SER_INDEX = 1 => serial port number 0 :
+ configuration has been already done
+ - if CONFIG_KGDB_SER_INDEX = 2 => serial port number 1 :
+ configure port 1 for serial I/O with rate = CONFIG_KGDB_BAUDRATE
+*/
+#if (CONFIG_KGDB_SER_INDEX & 2)
+void kgdb_serial_init (void)
+{
+ volatile char val;
+ unsigned short br_reg;
+
+ get_clocks ();
+ br_reg = (((((gd->cpu_clk / 16) / 18) * 10) / CONFIG_KGDB_BAUDRATE) +
+ 5) / 10;
+ /*
+ * Init onboard 16550 UART
+ */
+ out8 (ACTING_UART1_BASE + UART_LCR, 0x80); /* set DLAB bit */
+ out8 (ACTING_UART1_BASE + UART_DLL, (br_reg & 0x00ff)); /* set divisor for 9600 baud */
+ out8 (ACTING_UART1_BASE + UART_DLM, ((br_reg & 0xff00) >> 8)); /* set divisor for 9600 baud */
+ out8 (ACTING_UART1_BASE + UART_LCR, 0x03); /* line control 8 bits no parity */
+ out8 (ACTING_UART1_BASE + UART_FCR, 0x00); /* disable FIFO */
+ out8 (ACTING_UART1_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
+ val = in8 (ACTING_UART1_BASE + UART_LSR); /* clear line status */
+ val = in8 (ACTING_UART1_BASE + UART_RBR); /* read receive buffer */
+ out8 (ACTING_UART1_BASE + UART_SCR, 0x00); /* set scratchpad */
+ out8 (ACTING_UART1_BASE + UART_IER, 0x00); /* set interrupt enable reg */
+}
+
+void putDebugChar (const char c)
+{
+ if (c == '\n')
+ serial_putc ('\r');
+
+ out8 (ACTING_UART1_BASE + UART_THR, c); /* put character out */
+
+ /* check THRE bit, wait for transfer done */
+ while ((in8 (ACTING_UART1_BASE + UART_LSR) & 0x20) != 0x20);
+}
+
+void putDebugStr (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}
+
+int getDebugChar (void)
+{
+ unsigned char status = 0;
+
+ while (1) {
+ status = in8 (ACTING_UART1_BASE + UART_LSR);
+ if ((status & asyncLSRDataReady1) != 0x0) {
+ break;
+ }
+ if ((status & ( asyncLSRFramingError1 |
+ asyncLSROverrunError1 |
+ asyncLSRParityError1 |
+ asyncLSRBreakInterrupt1 )) != 0) {
+ out8 (ACTING_UART1_BASE + UART_LSR,
+ asyncLSRFramingError1 |
+ asyncLSROverrunError1 |
+ asyncLSRParityError1 |
+ asyncLSRBreakInterrupt1);
+ }
+ }
+ return (0x000000ff & (int) in8 (ACTING_UART1_BASE));
+}
+
+void kgdb_interruptible (int yes)
+{
+ return;
+}
+
+#else /* ! (CONFIG_KGDB_SER_INDEX & 2) */
+
+void kgdb_serial_init (void)
+{
+ serial_printf ("[on serial] ");
+}
+
+void putDebugChar (int c)
+{
+ serial_putc (c);
+}
+
+void putDebugStr (const char *str)
+{
+ serial_puts (str);
+}
+
+int getDebugChar (void)
+{
+ return serial_getc ();
+}
+
+void kgdb_interruptible (int yes)
+{
+ return;
+}
+#endif /* (CONFIG_KGDB_SER_INDEX & 2) */
+#endif
+
+
+#if defined(CONFIG_SERIAL_MULTI)
+int serial0_init(void)
+{
+ return (serial_init_dev(UART0_BASE));
+}
+
+int serial1_init(void)
+{
+ return (serial_init_dev(UART1_BASE));
+}
+void serial0_setbrg (void)
+{
+ serial_setbrg_dev(UART0_BASE);
+}
+void serial1_setbrg (void)
+{
+ serial_setbrg_dev(UART1_BASE);
+}
+
+void serial0_putc(const char c)
+{
+ serial_putc_dev(UART0_BASE,c);
+}
+
+void serial1_putc(const char c)
+{
+ serial_putc_dev(UART1_BASE, c);
+}
+void serial0_puts(const char *s)
+{
+ serial_puts_dev(UART0_BASE, s);
+}
+
+void serial1_puts(const char *s)
+{
+ serial_puts_dev(UART1_BASE, s);
+}
+
+int serial0_getc(void)
+{
+ return(serial_getc_dev(UART0_BASE));
+}
+
+int serial1_getc(void)
+{
+ return(serial_getc_dev(UART1_BASE));
+}
+int serial0_tstc(void)
+{
+ return (serial_tstc_dev(UART0_BASE));
+}
+
+int serial1_tstc(void)
+{
+ return (serial_tstc_dev(UART1_BASE));
+}
+
+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_405GP || CONFIG_405CR */
START = start.o resetvec.o kgdb.o
SOBJS = dcr.o
COBJS = 40x_spd_sdram.o 44x_spd_ddr.o 44x_spd_ddr2.o \
- 4xx_pci.o 4xx_pcie.o 4xx_enet.o \
- bedbug_405.o commproc.o \
- cpu.o cpu_init.o fdt.o gpio.o i2c.o interrupts.o \
- miiphy.o ndfc.o sdram.o serial.o speed.o \
- tlb.o traps.o usb_ohci.o usb.o usbdev.o
+ 4xx_enet.o 4xx_pci.o 4xx_pcie.o 4xx_uart.o \
+ bedbug_405.o commproc.o cpu.o cpu_init.o \
+ fdt.o gpio.o i2c.o interrupts.o iop480_uart.o \
+ miiphy.o ndfc.o sdram.o speed.o \
+ tlb.o traps.o usb.o usb_ohci.o usbdev.o
SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
--- /dev/null
+/*
+ * (C) Copyright 2000-2006
+ * 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
+ */
+
+#include <common.h>
+#include <commproc.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <watchdog.h>
+#include "vecnum.h"
+
+#ifdef CONFIG_SERIAL_MULTI
+#include <serial.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_IOP480
+
+#define SPU_BASE 0x40000000
+
+#define spu_LineStat_rc 0x00 /* Line Status Register (Read/Clear) */
+#define spu_LineStat_w 0x04 /* Line Status Register (Set) */
+#define spu_Handshk_rc 0x08 /* Handshake Status Register (Read/Clear) */
+#define spu_Handshk_w 0x0c /* Handshake Status Register (Set) */
+#define spu_BRateDivh 0x10 /* Baud rate divisor high */
+#define spu_BRateDivl 0x14 /* Baud rate divisor low */
+#define spu_CtlReg 0x18 /* Control Register */
+#define spu_RxCmd 0x1c /* Rx Command Register */
+#define spu_TxCmd 0x20 /* Tx Command Register */
+#define spu_RxBuff 0x24 /* Rx data buffer */
+#define spu_TxBuff 0x24 /* Tx data buffer */
+
+/*-----------------------------------------------------------------------------+
+ | Line Status Register.
+ +-----------------------------------------------------------------------------*/
+#define asyncLSRport1 0x40000000
+#define asyncLSRport1set 0x40000004
+#define asyncLSRDataReady 0x80
+#define asyncLSRFramingError 0x40
+#define asyncLSROverrunError 0x20
+#define asyncLSRParityError 0x10
+#define asyncLSRBreakInterrupt 0x08
+#define asyncLSRTxHoldEmpty 0x04
+#define asyncLSRTxShiftEmpty 0x02
+
+/*-----------------------------------------------------------------------------+
+ | Handshake Status Register.
+ +-----------------------------------------------------------------------------*/
+#define asyncHSRport1 0x40000008
+#define asyncHSRport1set 0x4000000c
+#define asyncHSRDsr 0x80
+#define asyncLSRCts 0x40
+
+/*-----------------------------------------------------------------------------+
+ | Control Register.
+ +-----------------------------------------------------------------------------*/
+#define asyncCRport1 0x40000018
+#define asyncCRNormal 0x00
+#define asyncCRLoopback 0x40
+#define asyncCRAutoEcho 0x80
+#define asyncCRDtr 0x20
+#define asyncCRRts 0x10
+#define asyncCRWordLength7 0x00
+#define asyncCRWordLength8 0x08
+#define asyncCRParityDisable 0x00
+#define asyncCRParityEnable 0x04
+#define asyncCREvenParity 0x00
+#define asyncCROddParity 0x02
+#define asyncCRStopBitsOne 0x00
+#define asyncCRStopBitsTwo 0x01
+#define asyncCRDisableDtrRts 0x00
+
+/*-----------------------------------------------------------------------------+
+ | Receiver Command Register.
+ +-----------------------------------------------------------------------------*/
+#define asyncRCRport1 0x4000001c
+#define asyncRCRDisable 0x00
+#define asyncRCREnable 0x80
+#define asyncRCRIntDisable 0x00
+#define asyncRCRIntEnabled 0x20
+#define asyncRCRDMACh2 0x40
+#define asyncRCRDMACh3 0x60
+#define asyncRCRErrorInt 0x10
+#define asyncRCRPauseEnable 0x08
+
+/*-----------------------------------------------------------------------------+
+ | Transmitter Command Register.
+ +-----------------------------------------------------------------------------*/
+#define asyncTCRport1 0x40000020
+#define asyncTCRDisable 0x00
+#define asyncTCREnable 0x80
+#define asyncTCRIntDisable 0x00
+#define asyncTCRIntEnabled 0x20
+#define asyncTCRDMACh2 0x40
+#define asyncTCRDMACh3 0x60
+#define asyncTCRTxEmpty 0x10
+#define asyncTCRErrorInt 0x08
+#define asyncTCRStopPause 0x04
+#define asyncTCRBreakGen 0x02
+
+/*-----------------------------------------------------------------------------+
+ | Miscellanies defines.
+ +-----------------------------------------------------------------------------*/
+#define asyncTxBufferport1 0x40000024
+#define asyncRxBufferport1 0x40000024
+#define asyncDLABLsbport1 0x40000014
+#define asyncDLABMsbport1 0x40000010
+#define asyncXOFFchar 0x13
+#define asyncXONchar 0x11
+
+/*
+ * Minimal serial functions needed to use one of the SMC ports
+ * as serial console interface.
+ */
+
+int serial_init (void)
+{
+ volatile char val;
+ unsigned short br_reg;
+
+ br_reg = ((((CONFIG_CPUCLOCK * 1000000) / 16) / gd->baudrate) - 1);
+
+ /*
+ * Init onboard UART
+ */
+ out_8((u8 *)SPU_BASE + spu_LineStat_rc, 0x78); /* Clear all bits in Line Status Reg */
+ out_8((u8 *)SPU_BASE + spu_BRateDivl, (br_reg & 0x00ff)); /* Set baud rate divisor... */
+ out_8((u8 *)SPU_BASE + spu_BRateDivh, ((br_reg & 0xff00) >> 8)); /* ... */
+ out_8((u8 *)SPU_BASE + spu_CtlReg, 0x08); /* Set 8 bits, no parity and 1 stop bit */
+ out_8((u8 *)SPU_BASE + spu_RxCmd, 0xb0); /* Enable Rx */
+ out_8((u8 *)SPU_BASE + spu_TxCmd, 0x9c); /* Enable Tx */
+ out_8((u8 *)SPU_BASE + spu_Handshk_rc, 0xff); /* Clear Handshake */
+ val = in_8((u8 *)SPU_BASE + spu_RxBuff); /* Dummy read, to clear receiver */
+
+ return (0);
+}
+
+void serial_setbrg (void)
+{
+ unsigned short br_reg;
+
+ br_reg = ((((CONFIG_CPUCLOCK * 1000000) / 16) / gd->baudrate) - 1);
+
+ out_8((u8 *)SPU_BASE + spu_BRateDivl,
+ (br_reg & 0x00ff)); /* Set baud rate divisor... */
+ out_8((u8 *)SPU_BASE + spu_BRateDivh,
+ ((br_reg & 0xff00) >> 8)); /* ... */
+}
+
+void serial_putc (const char c)
+{
+ if (c == '\n')
+ serial_putc ('\r');
+
+ /* load status from handshake register */
+ if (in_8((u8 *)SPU_BASE + spu_Handshk_rc) != 00)
+ out_8((u8 *)SPU_BASE + spu_Handshk_rc, 0xff); /* Clear Handshake */
+
+ out_8((u8 *)SPU_BASE + spu_TxBuff, c); /* Put char */
+
+ while ((in_8((u8 *)SPU_BASE + spu_LineStat_rc) & 04) != 04) {
+ if (in_8((u8 *)SPU_BASE + spu_Handshk_rc) != 00)
+ out_8((u8 *)SPU_BASE + spu_Handshk_rc, 0xff); /* Clear Handshake */
+ }
+}
+
+void serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}
+
+int serial_getc ()
+{
+ unsigned char status = 0;
+
+ while (1) {
+ status = in_8((u8 *)asyncLSRport1);
+ if ((status & asyncLSRDataReady) != 0x0) {
+ break;
+ }
+ if ((status & ( asyncLSRFramingError |
+ asyncLSROverrunError |
+ asyncLSRParityError |
+ asyncLSRBreakInterrupt )) != 0) {
+ (void) out_8((u8 *)asyncLSRport1,
+ asyncLSRFramingError |
+ asyncLSROverrunError |
+ asyncLSRParityError |
+ asyncLSRBreakInterrupt );
+ }
+ }
+ return (0x000000ff & (int) in_8((u8 *)asyncRxBufferport1));
+}
+
+int serial_tstc ()
+{
+ unsigned char status;
+
+ status = in_8((u8 *)asyncLSRport1);
+ if ((status & asyncLSRDataReady) != 0x0) {
+ return (1);
+ }
+ if ((status & ( asyncLSRFramingError |
+ asyncLSROverrunError |
+ asyncLSRParityError |
+ asyncLSRBreakInterrupt )) != 0) {
+ (void) out_8((u8 *)asyncLSRport1,
+ asyncLSRFramingError |
+ asyncLSROverrunError |
+ asyncLSRParityError |
+ asyncLSRBreakInterrupt);
+ }
+ return 0;
+}
+
+#endif /* CONFIG_IOP480 */
+++ /dev/null
-/*
- * (C) Copyright 2000-2006
- * 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
- */
-/*------------------------------------------------------------------------------+ */
-/*
- * This source code has been made available to you by IBM on an AS-IS
- * basis. Anyone receiving this source is licensed under IBM
- * copyrights to use it in any way he or she deems fit, including
- * copying it, modifying it, compiling it, and redistributing it either
- * with or without modifications. No license under IBM patents or
- * patent applications is to be implied by the copyright license.
- *
- * Any user of this software should understand that IBM cannot provide
- * technical support for this software and will not be responsible for
- * any consequences resulting from the use of this software.
- *
- * Any person who transfers this source code or any derivative work
- * must include the IBM copyright notice, this paragraph, and the
- * preceding two paragraphs in the transferred software.
- *
- * COPYRIGHT I B M CORPORATION 1995
- * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
- */
-/*------------------------------------------------------------------------------- */
-/*
- * Travis Sawyer 15 September 2004
- * Added CONFIG_SERIAL_MULTI support
- */
-#include <common.h>
-#include <commproc.h>
-#include <asm/processor.h>
-#include <watchdog.h>
-#include "vecnum.h"
-
-#ifdef CONFIG_SERIAL_MULTI
-#include <serial.h>
-#endif
-
-#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
-#include <malloc.h>
-#endif
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/*****************************************************************************/
-#ifdef CONFIG_IOP480
-
-#define SPU_BASE 0x40000000
-
-#define spu_LineStat_rc 0x00 /* Line Status Register (Read/Clear) */
-#define spu_LineStat_w 0x04 /* Line Status Register (Set) */
-#define spu_Handshk_rc 0x08 /* Handshake Status Register (Read/Clear) */
-#define spu_Handshk_w 0x0c /* Handshake Status Register (Set) */
-#define spu_BRateDivh 0x10 /* Baud rate divisor high */
-#define spu_BRateDivl 0x14 /* Baud rate divisor low */
-#define spu_CtlReg 0x18 /* Control Register */
-#define spu_RxCmd 0x1c /* Rx Command Register */
-#define spu_TxCmd 0x20 /* Tx Command Register */
-#define spu_RxBuff 0x24 /* Rx data buffer */
-#define spu_TxBuff 0x24 /* Tx data buffer */
-
-/*-----------------------------------------------------------------------------+
- | Line Status Register.
- +-----------------------------------------------------------------------------*/
-#define asyncLSRport1 0x40000000
-#define asyncLSRport1set 0x40000004
-#define asyncLSRDataReady 0x80
-#define asyncLSRFramingError 0x40
-#define asyncLSROverrunError 0x20
-#define asyncLSRParityError 0x10
-#define asyncLSRBreakInterrupt 0x08
-#define asyncLSRTxHoldEmpty 0x04
-#define asyncLSRTxShiftEmpty 0x02
-
-/*-----------------------------------------------------------------------------+
- | Handshake Status Register.
- +-----------------------------------------------------------------------------*/
-#define asyncHSRport1 0x40000008
-#define asyncHSRport1set 0x4000000c
-#define asyncHSRDsr 0x80
-#define asyncLSRCts 0x40
-
-/*-----------------------------------------------------------------------------+
- | Control Register.
- +-----------------------------------------------------------------------------*/
-#define asyncCRport1 0x40000018
-#define asyncCRNormal 0x00
-#define asyncCRLoopback 0x40
-#define asyncCRAutoEcho 0x80
-#define asyncCRDtr 0x20
-#define asyncCRRts 0x10
-#define asyncCRWordLength7 0x00
-#define asyncCRWordLength8 0x08
-#define asyncCRParityDisable 0x00
-#define asyncCRParityEnable 0x04
-#define asyncCREvenParity 0x00
-#define asyncCROddParity 0x02
-#define asyncCRStopBitsOne 0x00
-#define asyncCRStopBitsTwo 0x01
-#define asyncCRDisableDtrRts 0x00
-
-/*-----------------------------------------------------------------------------+
- | Receiver Command Register.
- +-----------------------------------------------------------------------------*/
-#define asyncRCRport1 0x4000001c
-#define asyncRCRDisable 0x00
-#define asyncRCREnable 0x80
-#define asyncRCRIntDisable 0x00
-#define asyncRCRIntEnabled 0x20
-#define asyncRCRDMACh2 0x40
-#define asyncRCRDMACh3 0x60
-#define asyncRCRErrorInt 0x10
-#define asyncRCRPauseEnable 0x08
-
-/*-----------------------------------------------------------------------------+
- | Transmitter Command Register.
- +-----------------------------------------------------------------------------*/
-#define asyncTCRport1 0x40000020
-#define asyncTCRDisable 0x00
-#define asyncTCREnable 0x80
-#define asyncTCRIntDisable 0x00
-#define asyncTCRIntEnabled 0x20
-#define asyncTCRDMACh2 0x40
-#define asyncTCRDMACh3 0x60
-#define asyncTCRTxEmpty 0x10
-#define asyncTCRErrorInt 0x08
-#define asyncTCRStopPause 0x04
-#define asyncTCRBreakGen 0x02
-
-/*-----------------------------------------------------------------------------+
- | Miscellanies defines.
- +-----------------------------------------------------------------------------*/
-#define asyncTxBufferport1 0x40000024
-#define asyncRxBufferport1 0x40000024
-#define asyncDLABLsbport1 0x40000014
-#define asyncDLABMsbport1 0x40000010
-#define asyncXOFFchar 0x13
-#define asyncXONchar 0x11
-
-/*
- * Minimal serial functions needed to use one of the SMC ports
- * as serial console interface.
- */
-
-int serial_init (void)
-{
- volatile char val;
- unsigned short br_reg;
-
- br_reg = ((((CONFIG_CPUCLOCK * 1000000) / 16) / gd->baudrate) - 1);
-
- /*
- * Init onboard UART
- */
- out8 (SPU_BASE + spu_LineStat_rc, 0x78); /* Clear all bits in Line Status Reg */
- out8 (SPU_BASE + spu_BRateDivl, (br_reg & 0x00ff)); /* Set baud rate divisor... */
- out8 (SPU_BASE + spu_BRateDivh, ((br_reg & 0xff00) >> 8)); /* ... */
- out8 (SPU_BASE + spu_CtlReg, 0x08); /* Set 8 bits, no parity and 1 stop bit */
- out8 (SPU_BASE + spu_RxCmd, 0xb0); /* Enable Rx */
- out8 (SPU_BASE + spu_TxCmd, 0x9c); /* Enable Tx */
- out8 (SPU_BASE + spu_Handshk_rc, 0xff); /* Clear Handshake */
- val = in8 (SPU_BASE + spu_RxBuff); /* Dummy read, to clear receiver */
-
- return (0);
-}
-
-void serial_setbrg (void)
-{
- unsigned short br_reg;
-
- br_reg = ((((CONFIG_CPUCLOCK * 1000000) / 16) / gd->baudrate) - 1);
-
- out8 (SPU_BASE + spu_BRateDivl, (br_reg & 0x00ff)); /* Set baud rate divisor... */
- out8 (SPU_BASE + spu_BRateDivh, ((br_reg & 0xff00) >> 8)); /* ... */
-}
-
-void serial_putc (const char c)
-{
- if (c == '\n')
- serial_putc ('\r');
-
- /* load status from handshake register */
- if (in8 (SPU_BASE + spu_Handshk_rc) != 00)
- out8 (SPU_BASE + spu_Handshk_rc, 0xff); /* Clear Handshake */
-
- out8 (SPU_BASE + spu_TxBuff, c); /* Put char */
-
- while ((in8 (SPU_BASE + spu_LineStat_rc) & 04) != 04) {
- if (in8 (SPU_BASE + spu_Handshk_rc) != 00)
- out8 (SPU_BASE + spu_Handshk_rc, 0xff); /* Clear Handshake */
- }
-}
-
-void serial_puts (const char *s)
-{
- while (*s) {
- serial_putc (*s++);
- }
-}
-
-int serial_getc ()
-{
- unsigned char status = 0;
-
- while (1) {
- status = in8 (asyncLSRport1);
- if ((status & asyncLSRDataReady) != 0x0) {
- break;
- }
- if ((status & ( asyncLSRFramingError |
- asyncLSROverrunError |
- asyncLSRParityError |
- asyncLSRBreakInterrupt )) != 0) {
- (void) out8 (asyncLSRport1,
- asyncLSRFramingError |
- asyncLSROverrunError |
- asyncLSRParityError |
- asyncLSRBreakInterrupt );
- }
- }
- return (0x000000ff & (int) in8 (asyncRxBufferport1));
-}
-
-int serial_tstc ()
-{
- unsigned char status;
-
- status = in8 (asyncLSRport1);
- if ((status & asyncLSRDataReady) != 0x0) {
- return (1);
- }
- if ((status & ( asyncLSRFramingError |
- asyncLSROverrunError |
- asyncLSRParityError |
- asyncLSRBreakInterrupt )) != 0) {
- (void) out8 (asyncLSRport1,
- asyncLSRFramingError |
- asyncLSROverrunError |
- asyncLSRParityError |
- asyncLSRBreakInterrupt);
- }
- return 0;
-}
-
-#endif /* CONFIG_IOP480 */
-
-/*****************************************************************************/
-#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || \
- defined(CONFIG_405EP) || defined(CONFIG_405EZ) || \
- defined(CONFIG_405EX) || defined(CONFIG_440)
-
-#if defined(CONFIG_440)
-#if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
- defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
-#define UART0_BASE CFG_PERIPHERAL_BASE + 0x00000300
-#define UART1_BASE CFG_PERIPHERAL_BASE + 0x00000400
-#else
-#define UART0_BASE CFG_PERIPHERAL_BASE + 0x00000200
-#define UART1_BASE CFG_PERIPHERAL_BASE + 0x00000300
-#endif
-
-#if defined(CONFIG_440SP) || defined(CONFIG_440SPE)
-#define UART2_BASE CFG_PERIPHERAL_BASE + 0x00000600
-#endif
-
-#if defined(CONFIG_440GP)
-#define CR0_MASK 0x3fff0000
-#define CR0_EXTCLK_ENA 0x00600000
-#define CR0_UDIV_POS 16
-#define UDIV_SUBTRACT 1
-#define UART0_SDR cntrl0
-#define MFREG(a, d) d = mfdcr(a)
-#define MTREG(a, d) mtdcr(a, d)
-#else /* #if defined(CONFIG_440GP) */
-/* all other 440 PPC's access clock divider via sdr register */
-#define CR0_MASK 0xdfffffff
-#define CR0_EXTCLK_ENA 0x00800000
-#define CR0_UDIV_POS 0
-#define UDIV_SUBTRACT 0
-#define UART0_SDR sdr_uart0
-#define UART1_SDR sdr_uart1
-#if defined(CONFIG_440EP) || defined(CONFIG_440EPx) || \
- defined(CONFIG_440GR) || defined(CONFIG_440GRx) || \
- defined(CONFIG_440SP) || defined(CONFIG_440SPe)
-#define UART2_SDR sdr_uart2
-#endif
-#if defined(CONFIG_440EP) || defined(CONFIG_440EPx) || \
- defined(CONFIG_440GR) || defined(CONFIG_440GRx)
-#define UART3_SDR sdr_uart3
-#endif
-#define MFREG(a, d) mfsdr(a, d)
-#define MTREG(a, d) mtsdr(a, d)
-#endif /* #if defined(CONFIG_440GP) */
-#elif defined(CONFIG_405EP) || defined(CONFIG_405EZ)
-#define UART0_BASE 0xef600300
-#define UART1_BASE 0xef600400
-#define UCR0_MASK 0x0000007f
-#define UCR1_MASK 0x00007f00
-#define UCR0_UDIV_POS 0
-#define UCR1_UDIV_POS 8
-#define UDIV_MAX 127
-#elif defined(CONFIG_405EX)
-#define UART0_BASE 0xef600200
-#define UART1_BASE 0xef600300
-#define CR0_MASK 0x000000ff
-#define CR0_EXTCLK_ENA 0x00800000
-#define CR0_UDIV_POS 0
-#define UDIV_SUBTRACT 0
-#define UART0_SDR sdr_uart0
-#define UART1_SDR sdr_uart1
-#else /* CONFIG_405GP || CONFIG_405CR */
-#define UART0_BASE 0xef600300
-#define UART1_BASE 0xef600400
-#define CR0_MASK 0x00001fff
-#define CR0_EXTCLK_ENA 0x000000c0
-#define CR0_UDIV_POS 1
-#define UDIV_MAX 32
-#endif
-
-/* using serial port 0 or 1 as U-Boot console ? */
-#if defined(CONFIG_UART1_CONSOLE)
-#define ACTING_UART0_BASE UART1_BASE
-#define ACTING_UART1_BASE UART0_BASE
-#else
-#define ACTING_UART0_BASE UART0_BASE
-#define ACTING_UART1_BASE UART1_BASE
-#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
-#define UART_BASE dev_base
-#else
-#define UART_BASE ACTING_UART0_BASE
-#endif
-
-#if defined(CONFIG_405EP) && defined(CFG_EXT_SERIAL_CLOCK)
-#error "External serial clock not supported on AMCC PPC405EP!"
-#endif
-
-#define UART_RBR 0x00
-#define UART_THR 0x00
-#define UART_IER 0x01
-#define UART_IIR 0x02
-#define UART_FCR 0x02
-#define UART_LCR 0x03
-#define UART_MCR 0x04
-#define UART_LSR 0x05
-#define UART_MSR 0x06
-#define UART_SCR 0x07
-#define UART_DLL 0x00
-#define UART_DLM 0x01
-
-/*-----------------------------------------------------------------------------+
- | Line Status Register.
- +-----------------------------------------------------------------------------*/
-/*#define asyncLSRport1 ACTING_UART0_BASE+0x05 */
-#define asyncLSRDataReady1 0x01
-#define asyncLSROverrunError1 0x02
-#define asyncLSRParityError1 0x04
-#define asyncLSRFramingError1 0x08
-#define asyncLSRBreakInterrupt1 0x10
-#define asyncLSRTxHoldEmpty1 0x20
-#define asyncLSRTxShiftEmpty1 0x40
-#define asyncLSRRxFifoError1 0x80
-
-/*-----------------------------------------------------------------------------+
- | Miscellanies defines.
- +-----------------------------------------------------------------------------*/
-/*#define asyncTxBufferport1 ACTING_UART0_BASE+0x00 */
-/*#define asyncRxBufferport1 ACTING_UART0_BASE+0x00 */
-
-#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
-/*-----------------------------------------------------------------------------+
- | Fifo
- +-----------------------------------------------------------------------------*/
-typedef struct {
- char *rx_buffer;
- ulong rx_put;
- ulong rx_get;
-} serial_buffer_t;
-
-volatile static serial_buffer_t buf_info;
-#endif
-
-#if (defined(CONFIG_440) || defined(CONFIG_405EX)) && \
- !defined(CFG_EXT_SERIAL_CLOCK)
-static void serial_divs (int baudrate, unsigned long *pudiv,
- unsigned short *pbdiv)
-{
- sys_info_t sysinfo;
- unsigned long div; /* total divisor udiv * bdiv */
- unsigned long umin; /* minimum udiv */
- unsigned short diff; /* smallest diff */
- unsigned long udiv; /* best udiv */
- unsigned short idiff; /* current diff */
- unsigned short ibdiv; /* current bdiv */
- unsigned long i;
- unsigned long est; /* current estimate */
-
- get_sys_info(&sysinfo);
-
- udiv = 32; /* Assume lowest possible serial clk */
- div = sysinfo.freqPLB / (16 * baudrate); /* total divisor */
- umin = sysinfo.pllOpbDiv << 1; /* 2 x OPB divisor */
- diff = 32; /* highest possible */
-
- /* i is the test udiv value -- start with the largest
- * possible (32) to minimize serial clock and constrain
- * search to umin.
- */
- for (i = 32; i > umin; i--) {
- ibdiv = div / i;
- est = i * ibdiv;
- idiff = (est > div) ? (est-div) : (div-est);
- if (idiff == 0) {
- udiv = i;
- break; /* can't do better */
- } else if (idiff < diff) {
- udiv = i; /* best so far */
- diff = idiff; /* update lowest diff*/
- }
- }
-
- *pudiv = udiv;
- *pbdiv = div / udiv;
-}
-
-#elif defined(CONFIG_405EZ)
-
-static void serial_divs (int baudrate, unsigned long *pudiv,
- unsigned short *pbdiv)
-{
- sys_info_t sysinfo;
- unsigned long div; /* total divisor udiv * bdiv */
- unsigned long umin; /* minimum udiv */
- unsigned short diff; /* smallest diff */
- unsigned long udiv; /* best udiv */
- unsigned short idiff; /* current diff */
- unsigned short ibdiv; /* current bdiv */
- unsigned long i;
- unsigned long est; /* current estimate */
- unsigned long plloutb;
- unsigned long cpr_pllc;
- u32 reg;
-
- /* check the pll feedback source */
- mfcpr(cprpllc, cpr_pllc);
-
- get_sys_info(&sysinfo);
-
- plloutb = ((CONFIG_SYS_CLK_FREQ * ((cpr_pllc & PLLC_SRC_MASK) ?
- sysinfo.pllFwdDivB : sysinfo.pllFwdDiv) * sysinfo.pllFbkDiv) /
- sysinfo.pllFwdDivB);
- udiv = 256; /* Assume lowest possible serial clk */
- div = plloutb / (16 * baudrate); /* total divisor */
- umin = (plloutb / get_OPB_freq()) << 1; /* 2 x OPB divisor */
- diff = 256; /* highest possible */
-
- /* i is the test udiv value -- start with the largest
- * possible (256) to minimize serial clock and constrain
- * search to umin.
- */
- for (i = 256; i > umin; i--) {
- ibdiv = div / i;
- est = i * ibdiv;
- idiff = (est > div) ? (est-div) : (div-est);
- if (idiff == 0) {
- udiv = i;
- break; /* can't do better */
- } else if (idiff < diff) {
- udiv = i; /* best so far */
- diff = idiff; /* update lowest diff*/
- }
- }
-
- *pudiv = udiv;
- mfcpr(cprperd0, reg);
- reg &= ~0x0000ffff;
- reg |= ((udiv - 0) << 8) | (udiv - 0);
- mtcpr(cprperd0, reg);
- *pbdiv = div / udiv;
-}
-#endif /* defined(CONFIG_440) && !defined(CFG_EXT_SERIAL_CLK) */
-
-/*
- * Minimal serial functions needed to use one of the SMC ports
- * as serial console interface.
- */
-
-#if defined(CONFIG_440)
-#if defined(CONFIG_SERIAL_MULTI)
-int serial_init_dev (unsigned long dev_base)
-#else
-int serial_init(void)
-#endif
-{
- unsigned long reg;
- unsigned long udiv;
- unsigned short bdiv;
- volatile char val;
-#ifdef CFG_EXT_SERIAL_CLOCK
- unsigned long tmp;
-#endif
-
- MFREG(UART0_SDR, reg);
- reg &= ~CR0_MASK;
-
-#ifdef CFG_EXT_SERIAL_CLOCK
- reg |= CR0_EXTCLK_ENA;
- udiv = 1;
- tmp = gd->baudrate * 16;
- bdiv = (CFG_EXT_SERIAL_CLOCK + tmp / 2) / tmp;
- gd->freqUART = CFG_EXT_SERIAL_CLOCK;
-#else
- /* For 440, the cpu clock is on divider chain A, UART on divider
- * chain B ... so cpu clock is irrelevant. Get the "optimized"
- * values that are subject to the 1/2 opb clock constraint
- */
- serial_divs (gd->baudrate, &udiv, &bdiv);
-
- /* Correct UART frequency in bd-info struct now that
- * the UART divisor is available
- */
- gd->freqUART = gd->freqUART / udiv;
-#endif
-
- reg |= (udiv - UDIV_SUBTRACT) << CR0_UDIV_POS; /* set the UART divisor */
-
- /*
- * Configure input clock to baudrate generator for all
- * available serial ports here
- */
- MTREG(UART0_SDR, reg);
-#if defined(UART1_SDR)
- MTREG(UART1_SDR, reg);
-#endif
-#if defined(UART2_SDR)
- MTREG(UART2_SDR, reg);
-#endif
-#if defined(UART3_SDR)
- MTREG(UART3_SDR, reg);
-#endif
-
- out8(UART_BASE + UART_LCR, 0x80); /* set DLAB bit */
- out8(UART_BASE + UART_DLL, bdiv); /* set baudrate divisor */
- out8(UART_BASE + UART_DLM, bdiv >> 8); /* set baudrate divisor */
- out8(UART_BASE + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
- out8(UART_BASE + UART_FCR, 0x00); /* disable FIFO */
- out8(UART_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
- val = in8(UART_BASE + UART_LSR); /* clear line status */
- val = in8(UART_BASE + UART_RBR); /* read receive buffer */
- out8(UART_BASE + UART_SCR, 0x00); /* set scratchpad */
- out8(UART_BASE + UART_IER, 0x00); /* set interrupt enable reg */
-
- return (0);
-}
-
-#else /* !defined(CONFIG_440) */
-
-#if defined(CONFIG_SERIAL_MULTI)
-int serial_init_dev (unsigned long dev_base)
-#else
-int serial_init (void)
-#endif
-{
- unsigned long reg;
- unsigned long tmp;
- unsigned long clk;
- unsigned long udiv;
- unsigned short bdiv;
- volatile char val;
-
-#ifdef CONFIG_405EX
- clk = tmp = 0;
- mfsdr(UART0_SDR, reg);
- reg &= ~CR0_MASK;
-#ifdef CFG_EXT_SERIAL_CLOCK
- reg |= CR0_EXTCLK_ENA;
- udiv = 1;
- tmp = gd->baudrate * 16;
- bdiv = (CFG_EXT_SERIAL_CLOCK + tmp / 2) / tmp;
-#else
- serial_divs(gd->baudrate, &udiv, &bdiv);
-#endif
- reg |= (udiv - UDIV_SUBTRACT) << CR0_UDIV_POS; /* set the UART divisor */
-
- /*
- * Configure input clock to baudrate generator for all
- * available serial ports here
- */
- mtsdr(UART0_SDR, reg);
-
-#if defined(UART1_SDR)
- mtsdr(UART1_SDR, reg);
-#endif
-
-#elif defined(CONFIG_405EZ)
- serial_divs(gd->baudrate, &udiv, &bdiv);
- clk = tmp = reg = 0;
-#else
-#ifdef CONFIG_405EP
- reg = mfdcr(cpc0_ucr) & ~(UCR0_MASK | UCR1_MASK);
- clk = gd->cpu_clk;
- tmp = CFG_BASE_BAUD * 16;
- udiv = (clk + tmp / 2) / tmp;
- if (udiv > UDIV_MAX) /* max. n bits for udiv */
- udiv = UDIV_MAX;
- reg |= (udiv) << UCR0_UDIV_POS; /* set the UART divisor */
- reg |= (udiv) << UCR1_UDIV_POS; /* set the UART divisor */
- mtdcr (cpc0_ucr, reg);
-#else /* CONFIG_405EP */
- reg = mfdcr(cntrl0) & ~CR0_MASK;
-#ifdef CFG_EXT_SERIAL_CLOCK
- clk = CFG_EXT_SERIAL_CLOCK;
- udiv = 1;
- reg |= CR0_EXTCLK_ENA;
-#else
- clk = gd->cpu_clk;
-#ifdef CFG_405_UART_ERRATA_59
- udiv = 31; /* Errata 59: stuck at 31 */
-#else
- tmp = CFG_BASE_BAUD * 16;
- udiv = (clk + tmp / 2) / tmp;
- if (udiv > UDIV_MAX) /* max. n bits for udiv */
- udiv = UDIV_MAX;
-#endif
-#endif
- reg |= (udiv - 1) << CR0_UDIV_POS; /* set the UART divisor */
- mtdcr (cntrl0, reg);
-#endif /* CONFIG_405EP */
- tmp = gd->baudrate * udiv * 16;
- bdiv = (clk + tmp / 2) / tmp;
-#endif /* CONFIG_405EX */
-
- /* Correct UART frequency in bd-info struct now that
- * the UART divisor is available
- */
-#ifdef CFG_EXT_SERIAL_CLOCK
- gd->freqUART = CFG_EXT_SERIAL_CLOCK;
-#else
- gd->freqUART = gd->freqUART / udiv;
-#endif
-
- out8(UART_BASE + UART_LCR, 0x80); /* set DLAB bit */
- out8(UART_BASE + UART_DLL, bdiv); /* set baudrate divisor */
- out8(UART_BASE + UART_DLM, bdiv >> 8); /* set baudrate divisor */
- out8(UART_BASE + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
- out8(UART_BASE + UART_FCR, 0x00); /* disable FIFO */
- out8(UART_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
- val = in8(UART_BASE + UART_LSR); /* clear line status */
- val = in8(UART_BASE + UART_RBR); /* read receive buffer */
- out8(UART_BASE + UART_SCR, 0x00); /* set scratchpad */
- out8(UART_BASE + UART_IER, 0x00); /* set interrupt enable reg */
-
- return (0);
-}
-
-#endif /* if defined(CONFIG_440) */
-
-#if defined(CONFIG_SERIAL_MULTI)
-void serial_setbrg_dev (unsigned long dev_base)
-#else
-void serial_setbrg (void)
-#endif
-{
-#if defined(CONFIG_SERIAL_MULTI)
- serial_init_dev(dev_base);
-#else
- serial_init();
-#endif
-}
-
-#if defined(CONFIG_SERIAL_MULTI)
-void serial_putc_dev (unsigned long dev_base, const char c)
-#else
-void serial_putc (const char c)
-#endif
-{
- int i;
-
- if (c == '\n')
-#if defined(CONFIG_SERIAL_MULTI)
- serial_putc_dev (dev_base, '\r');
-#else
- serial_putc ('\r');
-#endif
-
- /* check THRE bit, wait for transmiter available */
- for (i = 1; i < 3500; i++) {
- if ((in8 (UART_BASE + UART_LSR) & 0x20) == 0x20)
- break;
- udelay (100);
- }
- out8 (UART_BASE + UART_THR, c); /* put character out */
-}
-
-#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
-{
- unsigned char status = 0;
-
- while (1) {
-#if defined(CONFIG_HW_WATCHDOG)
- WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
-#endif /* CONFIG_HW_WATCHDOG */
- status = in8 (UART_BASE + UART_LSR);
- if ((status & asyncLSRDataReady1) != 0x0) {
- break;
- }
- if ((status & ( asyncLSRFramingError1 |
- asyncLSROverrunError1 |
- asyncLSRParityError1 |
- asyncLSRBreakInterrupt1 )) != 0) {
- out8 (UART_BASE + UART_LSR,
- asyncLSRFramingError1 |
- asyncLSROverrunError1 |
- asyncLSRParityError1 |
- asyncLSRBreakInterrupt1);
- }
- }
- return (0x000000ff & (int) in8 (UART_BASE));
-}
-
-#if defined(CONFIG_SERIAL_MULTI)
-int serial_tstc_dev (unsigned long dev_base)
-#else
-int serial_tstc (void)
-#endif
-{
- unsigned char status;
-
- status = in8 (UART_BASE + UART_LSR);
- if ((status & asyncLSRDataReady1) != 0x0) {
- return (1);
- }
- if ((status & ( asyncLSRFramingError1 |
- asyncLSROverrunError1 |
- asyncLSRParityError1 |
- asyncLSRBreakInterrupt1 )) != 0) {
- out8 (UART_BASE + UART_LSR,
- asyncLSRFramingError1 |
- asyncLSROverrunError1 |
- asyncLSRParityError1 |
- asyncLSRBreakInterrupt1);
- }
- return 0;
-}
-
-#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
-
-void serial_isr (void *arg)
-{
- int space;
- int c;
- const int rx_get = buf_info.rx_get;
- int rx_put = buf_info.rx_put;
-
- if (rx_get <= rx_put) {
- space = CONFIG_SERIAL_SOFTWARE_FIFO - (rx_put - rx_get);
- } else {
- space = rx_get - rx_put;
- }
- while (serial_tstc_dev (ACTING_UART0_BASE)) {
- c = serial_getc_dev (ACTING_UART0_BASE);
- if (space) {
- buf_info.rx_buffer[rx_put++] = c;
- space--;
- }
- if (rx_put == CONFIG_SERIAL_SOFTWARE_FIFO)
- rx_put = 0;
- if (space < CONFIG_SERIAL_SOFTWARE_FIFO / 4) {
- /* Stop flow by setting RTS inactive */
- out8 (ACTING_UART0_BASE + UART_MCR,
- in8 (ACTING_UART0_BASE + UART_MCR) & (0xFF ^ 0x02));
- }
- }
- buf_info.rx_put = rx_put;
-}
-
-void serial_buffered_init (void)
-{
- serial_puts ("Switching to interrupt driven serial input mode.\n");
- buf_info.rx_buffer = malloc (CONFIG_SERIAL_SOFTWARE_FIFO);
- buf_info.rx_put = 0;
- buf_info.rx_get = 0;
-
- if (in8 (ACTING_UART0_BASE + UART_MSR) & 0x10) {
- serial_puts ("Check CTS signal present on serial port: OK.\n");
- } else {
- serial_puts ("WARNING: CTS signal not present on serial port.\n");
- }
-
- irq_install_handler ( VECNUM_U0 /*UART0 */ /*int vec */ ,
- serial_isr /*interrupt_handler_t *handler */ ,
- (void *) &buf_info /*void *arg */ );
-
- /* Enable "RX Data Available" Interrupt on UART */
- /* out8(ACTING_UART0_BASE + UART_IER, in8(ACTING_UART0_BASE + UART_IER) |0x01); */
- out8 (ACTING_UART0_BASE + UART_IER, 0x01);
- /* Set DTR active */
- out8 (ACTING_UART0_BASE + UART_MCR, in8 (ACTING_UART0_BASE + UART_MCR) | 0x01);
- /* Start flow by setting RTS active */
- out8 (ACTING_UART0_BASE + UART_MCR, in8 (ACTING_UART0_BASE + UART_MCR) | 0x02);
- /* Setup UART FIFO: RX trigger level: 4 byte, Enable FIFO */
- out8 (ACTING_UART0_BASE + UART_FCR, (1 << 6) | 1);
-}
-
-void serial_buffered_putc (const char c)
-{
- /* Wait for CTS */
-#if defined(CONFIG_HW_WATCHDOG)
- while (!(in8 (ACTING_UART0_BASE + UART_MSR) & 0x10))
- WATCHDOG_RESET ();
-#else
- while (!(in8 (ACTING_UART0_BASE + UART_MSR) & 0x10));
-#endif
- serial_putc (c);
-}
-
-void serial_buffered_puts (const char *s)
-{
- serial_puts (s);
-}
-
-int serial_buffered_getc (void)
-{
- int space;
- int c;
- int rx_get = buf_info.rx_get;
- int rx_put;
-
-#if defined(CONFIG_HW_WATCHDOG)
- while (rx_get == buf_info.rx_put)
- WATCHDOG_RESET ();
-#else
- while (rx_get == buf_info.rx_put);
-#endif
- c = buf_info.rx_buffer[rx_get++];
- if (rx_get == CONFIG_SERIAL_SOFTWARE_FIFO)
- rx_get = 0;
- buf_info.rx_get = rx_get;
-
- rx_put = buf_info.rx_put;
- if (rx_get <= rx_put) {
- space = CONFIG_SERIAL_SOFTWARE_FIFO - (rx_put - rx_get);
- } else {
- space = rx_get - rx_put;
- }
- if (space > CONFIG_SERIAL_SOFTWARE_FIFO / 2) {
- /* Start flow by setting RTS active */
- out8 (ACTING_UART0_BASE + UART_MCR, in8 (ACTING_UART0_BASE + UART_MCR) | 0x02);
- }
-
- return c;
-}
-
-int serial_buffered_tstc (void)
-{
- return (buf_info.rx_get != buf_info.rx_put) ? 1 : 0;
-}
-
-#endif /* CONFIG_SERIAL_SOFTWARE_FIFO */
-
-#if defined(CONFIG_CMD_KGDB)
-/*
- AS HARNOIS : according to CONFIG_KGDB_SER_INDEX kgdb uses serial port
- number 0 or number 1
- - if CONFIG_KGDB_SER_INDEX = 1 => serial port number 0 :
- configuration has been already done
- - if CONFIG_KGDB_SER_INDEX = 2 => serial port number 1 :
- configure port 1 for serial I/O with rate = CONFIG_KGDB_BAUDRATE
-*/
-#if (CONFIG_KGDB_SER_INDEX & 2)
-void kgdb_serial_init (void)
-{
- volatile char val;
- unsigned short br_reg;
-
- get_clocks ();
- br_reg = (((((gd->cpu_clk / 16) / 18) * 10) / CONFIG_KGDB_BAUDRATE) +
- 5) / 10;
- /*
- * Init onboard 16550 UART
- */
- out8 (ACTING_UART1_BASE + UART_LCR, 0x80); /* set DLAB bit */
- out8 (ACTING_UART1_BASE + UART_DLL, (br_reg & 0x00ff)); /* set divisor for 9600 baud */
- out8 (ACTING_UART1_BASE + UART_DLM, ((br_reg & 0xff00) >> 8)); /* set divisor for 9600 baud */
- out8 (ACTING_UART1_BASE + UART_LCR, 0x03); /* line control 8 bits no parity */
- out8 (ACTING_UART1_BASE + UART_FCR, 0x00); /* disable FIFO */
- out8 (ACTING_UART1_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
- val = in8 (ACTING_UART1_BASE + UART_LSR); /* clear line status */
- val = in8 (ACTING_UART1_BASE + UART_RBR); /* read receive buffer */
- out8 (ACTING_UART1_BASE + UART_SCR, 0x00); /* set scratchpad */
- out8 (ACTING_UART1_BASE + UART_IER, 0x00); /* set interrupt enable reg */
-}
-
-void putDebugChar (const char c)
-{
- if (c == '\n')
- serial_putc ('\r');
-
- out8 (ACTING_UART1_BASE + UART_THR, c); /* put character out */
-
- /* check THRE bit, wait for transfer done */
- while ((in8 (ACTING_UART1_BASE + UART_LSR) & 0x20) != 0x20);
-}
-
-void putDebugStr (const char *s)
-{
- while (*s) {
- serial_putc (*s++);
- }
-}
-
-int getDebugChar (void)
-{
- unsigned char status = 0;
-
- while (1) {
- status = in8 (ACTING_UART1_BASE + UART_LSR);
- if ((status & asyncLSRDataReady1) != 0x0) {
- break;
- }
- if ((status & ( asyncLSRFramingError1 |
- asyncLSROverrunError1 |
- asyncLSRParityError1 |
- asyncLSRBreakInterrupt1 )) != 0) {
- out8 (ACTING_UART1_BASE + UART_LSR,
- asyncLSRFramingError1 |
- asyncLSROverrunError1 |
- asyncLSRParityError1 |
- asyncLSRBreakInterrupt1);
- }
- }
- return (0x000000ff & (int) in8 (ACTING_UART1_BASE));
-}
-
-void kgdb_interruptible (int yes)
-{
- return;
-}
-
-#else /* ! (CONFIG_KGDB_SER_INDEX & 2) */
-
-void kgdb_serial_init (void)
-{
- serial_printf ("[on serial] ");
-}
-
-void putDebugChar (int c)
-{
- serial_putc (c);
-}
-
-void putDebugStr (const char *str)
-{
- serial_puts (str);
-}
-
-int getDebugChar (void)
-{
- return serial_getc ();
-}
-
-void kgdb_interruptible (int yes)
-{
- return;
-}
-#endif /* (CONFIG_KGDB_SER_INDEX & 2) */
-#endif
-
-
-#if defined(CONFIG_SERIAL_MULTI)
-int serial0_init(void)
-{
- return (serial_init_dev(UART0_BASE));
-}
-
-int serial1_init(void)
-{
- return (serial_init_dev(UART1_BASE));
-}
-void serial0_setbrg (void)
-{
- serial_setbrg_dev(UART0_BASE);
-}
-void serial1_setbrg (void)
-{
- serial_setbrg_dev(UART1_BASE);
-}
-
-void serial0_putc(const char c)
-{
- serial_putc_dev(UART0_BASE,c);
-}
-
-void serial1_putc(const char c)
-{
- serial_putc_dev(UART1_BASE, c);
-}
-void serial0_puts(const char *s)
-{
- serial_puts_dev(UART0_BASE, s);
-}
-
-void serial1_puts(const char *s)
-{
- serial_puts_dev(UART1_BASE, s);
-}
-
-int serial0_getc(void)
-{
- return(serial_getc_dev(UART0_BASE));
-}
-
-int serial1_getc(void)
-{
- return(serial_getc_dev(UART1_BASE));
-}
-int serial0_tstc(void)
-{
- return (serial_tstc_dev(UART0_BASE));
-}
-
-int serial1_tstc(void)
-{
- return (serial_tstc_dev(UART1_BASE));
-}
-
-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_405GP || CONFIG_405CR */
projects / u-boot / commitdiff