* 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
* 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 <asm/io.h>
#include <watchdog.h>
#include "vecnum.h"
#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
/*-----------------------------------------------------------------------------+
| Line Status Register.
+-----------------------------------------------------------------------------*/
-/*#define asyncLSRport1 ACTING_UART0_BASE+0x05 */
#define asyncLSRDataReady1 0x01
#define asyncLSROverrunError1 0x02
#define asyncLSRParityError1 0x04
#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
volatile static serial_buffer_t buf_info;
#endif
-#if (defined(CONFIG_440) || defined(CONFIG_405EX)) && \
- !defined(CFG_EXT_SERIAL_CLOCK)
+static void serial_init_common(u32 base, u32 udiv, u16 bdiv)
+{
+ PPC4xx_SYS_INFO sys_info;
+ u8 val;
+
+ get_sys_info(&sys_info);
+
+ /* Correct UART frequency in bd-info struct now that
+ * the UART divisor is available
+ */
+#ifdef CFG_EXT_SERIAL_CLOCK
+ sys_info.freqUART = CFG_EXT_SERIAL_CLOCK;
+#else
+ sys_info.freqUART = sys_info.freqUART / udiv;
+#endif
+
+ out_8((u8 *)base + UART_LCR, 0x80); /* set DLAB bit */
+ out_8((u8 *)base + UART_DLL, bdiv); /* set baudrate divisor */
+ out_8((u8 *)base + UART_DLM, bdiv >> 8); /* set baudrate divisor */
+ out_8((u8 *)base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
+ out_8((u8 *)base + UART_FCR, 0x00); /* disable FIFO */
+ out_8((u8 *)base + UART_MCR, 0x00); /* no modem control DTR RTS */
+ val = in_8((u8 *)base + UART_LSR); /* clear line status */
+ val = in_8((u8 *)base + UART_RBR); /* read receive buffer */
+ out_8((u8 *)base + UART_SCR, 0x00); /* set scratchpad */
+ out_8((u8 *)base + UART_IER, 0x00); /* set interrupt enable reg */
+}
+
+#if (defined(CONFIG_440) || defined(CONFIG_405EX)) && \
+ !defined(CFG_EXT_SERIAL_CLOCK)
static void serial_divs (int baudrate, unsigned long *pudiv,
unsigned short *pbdiv)
{
get_sys_info(&sysinfo);
plloutb = ((CONFIG_SYS_CLK_FREQ * ((cpr_pllc & PLLC_SRC_MASK) ?
- sysinfo.pllFwdDivB : sysinfo.pllFwdDiv) * sysinfo.pllFbkDiv) /
- sysinfo.pllFwdDivB);
+ 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 */
*/
#if defined(CONFIG_440)
-#if defined(CONFIG_SERIAL_MULTI)
-int serial_init_dev (unsigned long dev_base)
-#else
-int serial_init(void)
-#endif
+int serial_init_dev(unsigned long base)
{
unsigned long reg;
unsigned long udiv;
unsigned short bdiv;
- volatile char val;
#ifdef CFG_EXT_SERIAL_CLOCK
unsigned long tmp;
#endif
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 */
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 */
+ serial_init_common(base, udiv, bdiv);
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
+int serial_init_dev (unsigned long base)
{
unsigned long reg;
unsigned long tmp;
unsigned long clk;
unsigned long udiv;
unsigned short bdiv;
- volatile char val;
#ifdef CONFIG_405EX
clk = tmp = 0;
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 */
+ serial_init_common(base, udiv, bdiv);
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
+void serial_setbrg_dev(unsigned long base)
{
-#if defined(CONFIG_SERIAL_MULTI)
- serial_init_dev(dev_base);
-#else
- serial_init();
-#endif
+ serial_init_dev(base);
}
-#if defined(CONFIG_SERIAL_MULTI)
-void serial_putc_dev (unsigned long dev_base, const char c)
-#else
-void serial_putc (const char c)
-#endif
+void serial_putc_dev(unsigned long base, const char c)
{
int i;
if (c == '\n')
-#if defined(CONFIG_SERIAL_MULTI)
- serial_putc_dev (dev_base, '\r');
-#else
- serial_putc ('\r');
-#endif
+ serial_putc_dev(base, '\r');
/* check THRE bit, wait for transmiter available */
for (i = 1; i < 3500; i++) {
- if ((in8 (UART_BASE + UART_LSR) & 0x20) == 0x20)
+ if ((in_8((u8 *)base + UART_LSR) & 0x20) == 0x20)
break;
udelay (100);
}
- out8 (UART_BASE + UART_THR, c); /* put character out */
+
+ out_8((u8 *)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
+void serial_puts_dev (unsigned long base, const char *s)
{
- while (*s) {
-#if defined(CONFIG_SERIAL_MULTI)
- serial_putc_dev (dev_base, *s++);
-#else
- serial_putc (*s++);
-#endif
- }
+ while (*s)
+ serial_putc_dev (base, *s++);
}
-#if defined(CONFIG_SERIAL_MULTI)
-int serial_getc_dev (unsigned long dev_base)
-#else
-int serial_getc (void)
-#endif
+int serial_getc_dev (unsigned long base)
{
unsigned char status = 0;
#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) {
+
+ status = in_8((u8 *)base + UART_LSR);
+ if ((status & asyncLSRDataReady1) != 0x0)
break;
- }
+
if ((status & ( asyncLSRFramingError1 |
asyncLSROverrunError1 |
asyncLSRParityError1 |
asyncLSRBreakInterrupt1 )) != 0) {
- out8 (UART_BASE + UART_LSR,
+ out_8((u8 *)base + UART_LSR,
asyncLSRFramingError1 |
asyncLSROverrunError1 |
asyncLSRParityError1 |
asyncLSRBreakInterrupt1);
}
}
- return (0x000000ff & (int) in8 (UART_BASE));
+
+ return (0x000000ff & (int) in_8((u8 *)base));
}
-#if defined(CONFIG_SERIAL_MULTI)
-int serial_tstc_dev (unsigned long dev_base)
-#else
-int serial_tstc (void)
-#endif
+int serial_tstc_dev (unsigned long base)
{
unsigned char status;
- status = in8 (UART_BASE + UART_LSR);
- if ((status & asyncLSRDataReady1) != 0x0) {
+ status = in_8((u8 *)base + UART_LSR);
+ if ((status & asyncLSRDataReady1) != 0x0)
return (1);
- }
+
if ((status & ( asyncLSRFramingError1 |
asyncLSROverrunError1 |
asyncLSRParityError1 |
asyncLSRBreakInterrupt1 )) != 0) {
- out8 (UART_BASE + UART_LSR,
+ out_8((u8 *)base + UART_LSR,
asyncLSRFramingError1 |
asyncLSROverrunError1 |
asyncLSRParityError1 |
asyncLSRBreakInterrupt1);
}
+
return 0;
}
const int rx_get = buf_info.rx_get;
int rx_put = buf_info.rx_put;
- if (rx_get <= rx_put) {
+ if (rx_get <= rx_put)
space = CONFIG_SERIAL_SOFTWARE_FIFO - (rx_put - rx_get);
- } else {
+ else
space = rx_get - rx_put;
- }
+
while (serial_tstc_dev (ACTING_UART0_BASE)) {
c = serial_getc_dev (ACTING_UART0_BASE);
if (space) {
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));
+ out_8((u8 *)ACTING_UART0_BASE + UART_MCR,
+ in_8((u8 *)ACTING_UART0_BASE + UART_MCR) &
+ (0xFF ^ 0x02));
}
}
buf_info.rx_put = rx_put;
buf_info.rx_put = 0;
buf_info.rx_get = 0;
- if (in8 (ACTING_UART0_BASE + UART_MSR) & 0x10) {
+ if (in_8((u8 *)ACTING_UART0_BASE + UART_MSR) & 0x10)
serial_puts ("Check CTS signal present on serial port: OK.\n");
- } else {
+ 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);
+ out_8(ACTING_UART0_BASE + UART_IER, 0x01);
/* Set DTR active */
- out8 (ACTING_UART0_BASE + UART_MCR, in8 (ACTING_UART0_BASE + UART_MCR) | 0x01);
+ out_8(ACTING_UART0_BASE + UART_MCR,
+ in_8((u8 *)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);
+ out_8(ACTING_UART0_BASE + UART_MCR,
+ in_8((u8 *)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);
+ out_8(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))
+ while (!(in_8((u8 *)ACTING_UART0_BASE + UART_MSR) & 0x10))
WATCHDOG_RESET ();
#else
- while (!(in8 (ACTING_UART0_BASE + UART_MSR) & 0x10));
+ while (!(in_8((u8 *)ACTING_UART0_BASE + UART_MSR) & 0x10));
#endif
serial_putc (c);
}
buf_info.rx_get = rx_get;
rx_put = buf_info.rx_put;
- if (rx_get <= rx_put) {
+ if (rx_get <= rx_put)
space = CONFIG_SERIAL_SOFTWARE_FIFO - (rx_put - rx_get);
- } else {
+ 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);
+ out_8(ACTING_UART0_BASE + UART_MCR,
+ in_8((u8 *)ACTING_UART0_BASE + UART_MCR) | 0x02);
}
return c;
#if (CONFIG_KGDB_SER_INDEX & 2)
void kgdb_serial_init (void)
{
- volatile char val;
- unsigned short br_reg;
+ u8 val;
+ u16 br_reg;
get_clocks ();
br_reg = (((((gd->cpu_clk / 16) / 18) * 10) / CONFIG_KGDB_BAUDRATE) +
/*
* 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 */
+ out_8((u8 *)ACTING_UART1_BASE + UART_LCR, 0x80); /* set DLAB bit */
+ out_8((u8 *)ACTING_UART1_BASE + UART_DLL, (br_reg & 0x00ff)); /* set divisor for 9600 baud */
+ out_8((u8 *)ACTING_UART1_BASE + UART_DLM, ((br_reg & 0xff00) >> 8)); /* set divisor for 9600 baud */
+ out_8((u8 *)ACTING_UART1_BASE + UART_LCR, 0x03); /* line control 8 bits no parity */
+ out_8((u8 *)ACTING_UART1_BASE + UART_FCR, 0x00); /* disable FIFO */
+ out_8((u8 *)ACTING_UART1_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
+ val = in_8((u8 *)ACTING_UART1_BASE + UART_LSR); /* clear line status */
+ val = in_8((u8 *)ACTING_UART1_BASE + UART_RBR); /* read receive buffer */
+ out_8((u8 *)ACTING_UART1_BASE + UART_SCR, 0x00); /* set scratchpad */
+ out_8((u8 *)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 */
+ out_8((u8 *)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);
+ while ((in_8((u8 *)ACTING_UART1_BASE + UART_LSR) & 0x20) != 0x20);
}
void putDebugStr (const char *s)
{
- while (*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) {
+ status = in_8((u8 *)ACTING_UART1_BASE + UART_LSR);
+ if ((status & asyncLSRDataReady1) != 0x0)
break;
- }
- if ((status & ( asyncLSRFramingError1 |
- asyncLSROverrunError1 |
- asyncLSRParityError1 |
- asyncLSRBreakInterrupt1 )) != 0) {
- out8 (ACTING_UART1_BASE + UART_LSR,
+
+ if ((status & (asyncLSRFramingError1 |
+ asyncLSROverrunError1 |
+ asyncLSRParityError1 |
+ asyncLSRBreakInterrupt1 )) != 0) {
+ out_8((u8 *)ACTING_UART1_BASE + UART_LSR,
asyncLSRFramingError1 |
asyncLSROverrunError1 |
asyncLSRParityError1 |
asyncLSRBreakInterrupt1);
}
}
- return (0x000000ff & (int) in8 (ACTING_UART1_BASE));
+
+ return (0x000000ff & (int) in_8((u8 *)ACTING_UART1_BASE));
}
void kgdb_interruptible (int yes)
{
return (serial_init_dev(UART1_BASE));
}
+
void serial0_setbrg (void)
{
serial_setbrg_dev(UART0_BASE);
}
+
void serial1_setbrg (void)
{
serial_setbrg_dev(UART1_BASE);
{
serial_putc_dev(UART1_BASE, c);
}
+
void serial0_puts(const char *s)
{
serial_puts_dev(UART0_BASE, s);
{
return(serial_getc_dev(UART1_BASE));
}
+
int serial0_tstc(void)
{
return (serial_tstc_dev(UART0_BASE));
serial1_putc,
serial1_puts,
};
+#else
+/*
+ * Wrapper functions
+ */
+int serial_init(void)
+{
+ return serial_init_dev(ACTING_UART0_BASE);
+}
+
+void serial_setbrg(void)
+{
+ serial_setbrg_dev(ACTING_UART0_BASE);
+}
+
+void serial_putc(const char c)
+{
+ serial_putc_dev(ACTING_UART0_BASE, c);
+}
+
+void serial_puts(const char *s)
+{
+ serial_puts_dev(ACTING_UART0_BASE, s);
+}
+
+int serial_getc(void)
+{
+ return serial_getc_dev(ACTING_UART0_BASE);
+}
+
+int serial_tstc(void)
+{
+ return serial_tstc_dev(ACTING_UART0_BASE);
+}
#endif /* CONFIG_SERIAL_MULTI */
#endif /* CONFIG_405GP || CONFIG_405CR */
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