/*
- * (C) Copyright 2000
+ * (C) Copyright 2000-2006
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
#include <malloc.h>
#endif
+DECLARE_GLOBAL_DATA_PTR;
+
/*****************************************************************************/
#ifdef CONFIG_IOP480
int serial_init (void)
{
- DECLARE_GLOBAL_DATA_PTR;
-
volatile char val;
unsigned short br_reg;
void serial_setbrg (void)
{
- DECLARE_GLOBAL_DATA_PTR;
-
unsigned short br_reg;
br_reg = ((((CONFIG_CPUCLOCK * 1000000) / 16) / gd->baudrate) - 1);
#endif /* CONFIG_IOP480 */
/*****************************************************************************/
-#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) || defined(CONFIG_405EP)
+#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || \
+ defined(CONFIG_405EP) || defined(CONFIG_405EZ) || \
+ 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
-#if defined(CONFIG_440_GX)
-#define CR0_MASK 0xdfffffff
-#define CR0_EXTCLK_ENA 0x00800000
-#define CR0_UDIV_POS 0
-#else
+#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
-#endif /* CONFIG_440_GX */
-#elif defined(CONFIG_405EP)
+#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
#if defined(CONFIG_UART1_CONSOLE)
#define ACTING_UART0_BASE UART1_BASE
#define ACTING_UART1_BASE UART0_BASE
-#if defined(CONFIG_440_GX)
-#define UART0_SDR sdr_uart1
-#define UART1_SDR sdr_uart0
-#endif /* CONFIG_440_GX */
#else
#define ACTING_UART0_BASE UART0_BASE
#define ACTING_UART1_BASE UART1_BASE
-#if defined(CONFIG_440_GX)
-#define UART0_SDR sdr_uart0
-#define UART1_SDR sdr_uart1
-#endif /* CONFIG_440_GX */
+#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 IBM PPC405EP!"
+#error "External serial clock not supported on AMCC PPC405EP!"
#endif
#define UART_RBR 0x00
#if defined(CONFIG_440) && !defined(CFG_EXT_SERIAL_CLOCK)
static void serial_divs (int baudrate, unsigned long *pudiv,
- unsigned short *pbdiv )
+ unsigned short *pbdiv)
{
- sys_info_t sysinfo;
+ 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 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 est; /* current estimate */
- get_sys_info( &sysinfo );
+ 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 */
+ 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;
+ for (i = 32; i > umin; i--) {
+ ibdiv = div / i;
est = i * ibdiv;
idiff = (est > div) ? (est-div) : (div-est);
- if( idiff == 0 ){
+ if (idiff == 0) {
udiv = i;
break; /* can't do better */
- }
- else if( idiff < diff ){
+ } else if (idiff < diff) {
udiv = i; /* best so far */
diff = idiff; /* update lowest diff*/
}
}
*pudiv = udiv;
- *pbdiv = div/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;
+ u32 reg;
+
+ get_sys_info(&sysinfo);
+
+ plloutb = ((CONFIG_SYS_CLK_FREQ * 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 */
+#endif /* defined(CONFIG_440) && !defined(CFG_EXT_SERIAL_CLK) */
/*
* Minimal serial functions needed to use one of the SMC ports
int serial_init(void)
#endif
{
- DECLARE_GLOBAL_DATA_PTR;
-
unsigned long reg;
unsigned long udiv;
unsigned short bdiv;
unsigned long tmp;
#endif
-#if defined(CONFIG_440_GX)
-#if defined(CONFIG_SERIAL_MULTI)
- if (UART0_BASE == dev_base) {
- mfsdr(UART0_SDR,reg);
- reg &= ~CR0_MASK;
- } else {
- mfsdr(UART1_SDR,reg);
- reg &= ~CR0_MASK;
- }
-#else
- mfsdr(UART0_SDR,reg);
+ MFREG(UART0_SDR, reg);
reg &= ~CR0_MASK;
-#endif
-#else
- reg = mfdcr(cntrl0) & ~CR0_MASK;
-#endif /* CONFIG_440_GX */
+
#ifdef CFG_EXT_SERIAL_CLOCK
reg |= CR0_EXTCLK_ENA;
udiv = 1;
serial_divs (gd->baudrate, &udiv, &bdiv);
#endif
-#if defined(CONFIG_440_GX)
- reg |= udiv << CR0_UDIV_POS; /* set the UART divisor */
-#if defined(CONFIG_SERIAL_MULTI)
- if (UART0_BASE == dev_base) {
- mtsdr (UART0_SDR,reg);
- } else {
- mtsdr (UART1_SDR,reg);
- }
-#else
- mtsdr (UART0_SDR,reg);
+ 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
-#else
- reg |= (udiv - 1) << CR0_UDIV_POS; /* set the UART divisor */
- mtdcr (cntrl0, reg);
+#if defined(UART2_SDR)
+ MTREG(UART2_SDR, reg);
#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
- out8 (dev_base + UART_LCR, 0x80); /* set DLAB bit */
- out8 (dev_base + UART_DLL, bdiv); /* set baudrate divisor */
- out8 (dev_base + UART_DLM, bdiv >> 8);/* set baudrate divisor */
- out8 (dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
- out8 (dev_base + UART_FCR, 0x00); /* disable FIFO */
- out8 (dev_base + UART_MCR, 0x00); /* no modem control DTR RTS */
- val = in8 (dev_base + UART_LSR); /* clear line status */
- val = in8 (dev_base + UART_RBR); /* read receive buffer */
- out8 (dev_base + UART_SCR, 0x00); /* set scratchpad */
- out8 (dev_base + UART_IER, 0x00); /* set interrupt enable reg */
-#else
- out8 (ACTING_UART0_BASE + UART_LCR, 0x80); /* set DLAB bit */
- out8 (ACTING_UART0_BASE + UART_DLL, bdiv); /* set baudrate divisor */
- out8 (ACTING_UART0_BASE + UART_DLM, bdiv >> 8);/* set baudrate divisor */
- out8 (ACTING_UART0_BASE + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
- out8 (ACTING_UART0_BASE + UART_FCR, 0x00); /* disable FIFO */
- out8 (ACTING_UART0_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
- val = in8 (ACTING_UART0_BASE + UART_LSR); /* clear line status */
- val = in8 (ACTING_UART0_BASE + UART_RBR); /* read receive buffer */
- out8 (ACTING_UART0_BASE + UART_SCR, 0x00); /* set scratchpad */
- out8 (ACTING_UART0_BASE + UART_IER, 0x00); /* set interrupt enable reg */
+#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);
}
int serial_init (void)
#endif
{
- DECLARE_GLOBAL_DATA_PTR;
-
unsigned long reg;
unsigned long tmp;
unsigned long clk;
unsigned short bdiv;
volatile char val;
+#if 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;
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_405EZ */
+
+ 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 */
-#if defined(CONFIG_SERIAL_MULTI)
- out8 (dev_base + UART_LCR, 0x80); /* set DLAB bit */
- out8 (dev_base + UART_DLL, bdiv); /* set baudrate divisor */
- out8 (dev_base + UART_DLM, bdiv >> 8);/* set baudrate divisor */
- out8 (dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
- out8 (dev_base + UART_FCR, 0x00); /* disable FIFO */
- out8 (dev_base + UART_MCR, 0x00); /* no modem control DTR RTS */
- val = in8 (dev_base + UART_LSR); /* clear line status */
- val = in8 (dev_base + UART_RBR); /* read receive buffer */
- out8 (dev_base + UART_SCR, 0x00); /* set scratchpad */
- out8 (dev_base + UART_IER, 0x00); /* set interrupt enable reg */
-#else
- out8 (ACTING_UART0_BASE + UART_LCR, 0x80); /* set DLAB bit */
- out8 (ACTING_UART0_BASE + UART_DLL, bdiv); /* set baudrate divisor */
- out8 (ACTING_UART0_BASE + UART_DLM, bdiv >> 8);/* set baudrate divisor */
- out8 (ACTING_UART0_BASE + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
- out8 (ACTING_UART0_BASE + UART_FCR, 0x00); /* disable FIFO */
- out8 (ACTING_UART0_BASE + UART_MCR, 0x00); /* no modem control DTR RTS */
- val = in8 (ACTING_UART0_BASE + UART_LSR); /* clear line status */
- val = in8 (ACTING_UART0_BASE + UART_RBR); /* read receive buffer */
- out8 (ACTING_UART0_BASE + UART_SCR, 0x00); /* set scratchpad */
- out8 (ACTING_UART0_BASE + UART_IER, 0x00); /* set interrupt enable reg */
-#endif
return (0);
}
void serial_setbrg (void)
#endif
{
- DECLARE_GLOBAL_DATA_PTR;
-
- unsigned long tmp;
- unsigned long clk;
- unsigned long udiv;
- unsigned short bdiv;
-
-#ifdef CFG_EXT_SERIAL_CLOCK
- clk = CFG_EXT_SERIAL_CLOCK;
-#else
- clk = gd->cpu_clk;
-#endif
-
-#ifdef CONFIG_405EP
- udiv = ((mfdcr (cpc0_ucr) & UCR0_MASK) >> UCR0_UDIV_POS);
-#else
- udiv = ((mfdcr (cntrl0) & 0x3e) >> 1) + 1;
-#endif /* CONFIG_405EP */
- tmp = gd->baudrate * udiv * 16;
- bdiv = (clk + tmp / 2) / tmp;
-
#if defined(CONFIG_SERIAL_MULTI)
- out8 (dev_base + UART_LCR, 0x80); /* set DLAB bit */
- out8 (dev_base + UART_DLL, bdiv); /* set baudrate divisor */
- out8 (dev_base + UART_DLM, bdiv >> 8);/* set baudrate divisor */
- out8 (dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
+ serial_init_dev(dev_base);
#else
- out8 (ACTING_UART0_BASE + UART_LCR, 0x80); /* set DLAB bit */
- out8 (ACTING_UART0_BASE + UART_DLL, bdiv); /* set baudrate divisor */
- out8 (ACTING_UART0_BASE + UART_DLM, bdiv >> 8);/* set baudrate divisor */
- out8 (ACTING_UART0_BASE + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
+ serial_init();
#endif
}
/* check THRE bit, wait for transmiter available */
for (i = 1; i < 3500; i++) {
-#if defined(CONFIG_SERIAL_MULTI)
- if ((in8 (dev_base + UART_LSR) & 0x20) == 0x20)
-#else
- if ((in8 (ACTING_UART0_BASE + UART_LSR) & 0x20) == 0x20)
-#endif
+ if ((in8 (UART_BASE + UART_LSR) & 0x20) == 0x20)
break;
udelay (100);
}
-#if defined(CONFIG_SERIAL_MULTI)
- out8 (dev_base + UART_THR, c); /* put character out */
-#else
- out8 (ACTING_UART0_BASE + UART_THR, c); /* put character out */
-#endif
+ out8 (UART_BASE + UART_THR, c); /* put character out */
}
#if defined(CONFIG_SERIAL_MULTI)
#if defined(CONFIG_HW_WATCHDOG)
WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
#endif /* CONFIG_HW_WATCHDOG */
-#if defined(CONFIG_SERIAL_MULTI)
- status = in8 (dev_base + UART_LSR);
-#else
- status = in8 (ACTING_UART0_BASE + UART_LSR);
-#endif
+ status = in8 (UART_BASE + UART_LSR);
if ((status & asyncLSRDataReady1) != 0x0) {
break;
}
asyncLSROverrunError1 |
asyncLSRParityError1 |
asyncLSRBreakInterrupt1 )) != 0) {
-#if defined(CONFIG_SERIAL_MULTI)
- out8 (dev_base + UART_LSR,
-#else
- out8 (ACTING_UART0_BASE + UART_LSR,
-#endif
+ out8 (UART_BASE + UART_LSR,
asyncLSRFramingError1 |
asyncLSROverrunError1 |
asyncLSRParityError1 |
asyncLSRBreakInterrupt1);
}
}
-#if defined(CONFIG_SERIAL_MULTI)
- return (0x000000ff & (int) in8 (dev_base));
-#else
- return (0x000000ff & (int) in8 (ACTING_UART0_BASE));
-#endif
+ return (0x000000ff & (int) in8 (UART_BASE));
}
#if defined(CONFIG_SERIAL_MULTI)
{
unsigned char status;
-#if defined(CONFIG_SERIAL_MULTI)
- status = in8 (dev_base + UART_LSR);
-#else
- status = in8 (ACTING_UART0_BASE + UART_LSR);
-#endif
+ status = in8 (UART_BASE + UART_LSR);
if ((status & asyncLSRDataReady1) != 0x0) {
return (1);
}
asyncLSROverrunError1 |
asyncLSRParityError1 |
asyncLSRBreakInterrupt1 )) != 0) {
-#if defined(CONFIG_SERIAL_MULTI)
- out8 (dev_base + UART_LSR,
-#else
- out8 (ACTING_UART0_BASE + UART_LSR,
-#endif
+ out8 (UART_BASE + UART_LSR,
asyncLSRFramingError1 |
asyncLSROverrunError1 |
asyncLSRParityError1 |
#endif /* CONFIG_SERIAL_SOFTWARE_FIFO */
-#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
+#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 & 2)
void kgdb_serial_init (void)
{
- DECLARE_GLOBAL_DATA_PTR;
-
volatile char val;
unsigned short br_reg;
return;
}
#endif /* (CONFIG_KGDB_SER_INDEX & 2) */
-#endif /* CFG_CMD_KGDB */
+#endif
#if defined(CONFIG_SERIAL_MULTI)
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