+++ /dev/null
-/*****************************************************************************
- * DANUBE BootROM
- * Copyright (c) 2005, Infineon Technologies AG, All rights reserved
- * IFAP DC COM SD
- *****************************************************************************/
-
-#include <config.h>
-//#include <lib.h>
-#include <asm/danube.h>
-#include <asm/addrspace.h>
-#include <asm/ifx_asc.h>
-
-
-#define ASC_FIFO_PRESENT
-#define SET_BIT(reg, mask) reg |= (mask)
-#define CLEAR_BIT(reg, mask) reg &= (~mask)
-#define CLEAR_BITS(reg, mask) CLEAR_BIT(reg, mask)
-#define SET_BITS(reg, mask) SET_BIT(reg, mask)
-#define SET_BITFIELD(reg, mask, off, val) {reg &= (~mask); reg |= (val << off);}
-
-
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned long u32;
-typedef signed long s32;
-typedef unsigned int uint;
-typedef unsigned long ulong;
-typedef volatile unsigned short vuint;
-
-
-
-void serial_setbrg (void);
-
-/*TODO: undefine this !!!*/
-#undef DEBUG_ASC_RAW
-#ifdef DEBUG_ASC_RAW
-#define DEBUG_ASC_RAW_RX_BUF 0xA0800000
-#define DEBUG_ASC_RAW_TX_BUF 0xA0900000
-#endif
-
-static volatile DanubeAsc_t *pAsc = (DanubeAsc_t *)DANUBE_ASC1;
-
-typedef struct{
- u16 fdv; /* 0~511 fractional divider value*/
- u16 reload; /* 13 bit reload value*/
-} ifx_asc_baud_reg_t;
-
-#ifdef ON_VENUS
-/*9600 @1.25M rel 00.08*/
-//#define FDV 503
-//#define RELOAD 7
-/*9600 @0.625M rel final00.01 & rtl_freeze*/
-#define FDV 503
-#define RELOAD 3
-/* first index is DDR_SEL, second index is FPI_SEL */
-#endif
-static ifx_asc_baud_reg_t g_danube_asc_baud[4][2] =
-{
-#ifdef ON_VENUS
- {{503,3},{503,3}}, /* 1152000 @ 166.67M and half*/
- {{503,3},{503,3}}, /* 1152000 @ 133.3M and half*/
- {{503,3},{503,3}}, /* 1152000 @ 111.11M and half*/
- {{503.3},{503,3}} /* 1152000 @ 83.33M and half*/
-#else
-/* TAPEOUT table */
- {{436,76},{419,36}}, /* 1152000 @ 166.67M and half*/
- {{453,63},{453,31}}, /* 1152000 @ 133.3M and half*/
- {{501,58},{510,29}}, /* 1152000 @ 111.11M and half*/
- {{419.36},{453,19}} /* 1152000 @ 83.33M and half*/
-#endif
-};
-/******************************************************************************
-*
-* asc_init - initialize a Danube ASC channel
-*
-* This routine initializes the number of data bits, parity
-* and set the selected baud rate. Interrupts are disabled.
-* Set the modem control signals if the option is selected.
-*
-* RETURNS: N/A
-*/
-
-int serial_init (void)
-{
-
- /* and we have to set CLC register*/
- CLEAR_BIT(pAsc->asc_clc, ASCCLC_DISS);
- SET_BITFIELD(pAsc->asc_clc, ASCCLC_RMCMASK, ASCCLC_RMCOFFSET, 0x0001);
-
- /* initialy we are in async mode */
- pAsc->asc_con = ASCCON_M_8ASYNC;
-
- /* select input port */
- pAsc->asc_pisel = (CONSOLE_TTY & 0x1);
-
- /* TXFIFO's filling level */
- SET_BITFIELD(pAsc->asc_txfcon, ASCTXFCON_TXFITLMASK,
- ASCTXFCON_TXFITLOFF, DANUBEASC_TXFIFO_FL);
- /* enable TXFIFO */
- SET_BIT(pAsc->asc_txfcon, ASCTXFCON_TXFEN);
-
- /* RXFIFO's filling level */
- SET_BITFIELD(pAsc->asc_txfcon, ASCRXFCON_RXFITLMASK,
- ASCRXFCON_RXFITLOFF, DANUBEASC_RXFIFO_FL);
- /* enable RXFIFO */
- SET_BIT(pAsc->asc_rxfcon, ASCRXFCON_RXFEN);
-
- /* set baud rate */
- serial_setbrg();
-
- /* enable error signals & Receiver enable */
- SET_BIT(pAsc->asc_whbstate, ASCWHBSTATE_SETREN|ASCCON_FEN|ASCCON_TOEN|ASCCON_ROEN);
-
- return 0;
-}
-
-void serial_setbrg (void)
-{
- u32 uiReloadValue, fdv;
-
-#if defined(ON_IKOS)
- /*1200 @77K */
- fdv=472;
- uiReloadValue=5;
-#else
- /*venus & tapeout */
- u32 ddr_sel,fpi_sel;
- ddr_sel = (* DANUBE_CGU_SYS) & 0x3;
- fpi_sel = ((* DANUBE_CGU_SYS) & 0x40)?1:0;
- fdv= g_danube_asc_baud[ddr_sel][fpi_sel].fdv;
- uiReloadValue=g_danube_asc_baud[ddr_sel][fpi_sel].reload;
-#endif //ON_IKOS
- /* Disable Baud Rate Generator; BG should only be written when R=0 */
- CLEAR_BIT(pAsc->asc_con, ASCCON_R);
-
- /* Enable Fractional Divider */
- SET_BIT(pAsc->asc_con, ASCCON_FDE); /* FDE = 1 */
-
- /* Set fractional divider value */
- pAsc->asc_fdv = fdv & ASCFDV_VALUE_MASK;
-
- /* Set reload value in BG */
- pAsc->asc_bg = uiReloadValue;
-
- /* Enable Baud Rate Generator */
- SET_BIT(pAsc->asc_con, ASCCON_R); /* R = 1 */
-}
-
-
-void serial_putc (const char c)
-{
- u32 txFl = 0;
-#ifdef DEBUG_ASC_RAW
- static u8 * debug = (u8 *) DEBUG_ASC_RAW_TX_BUF;
- *debug++=c;
-#endif
- if (c == '\n')
- serial_putc ('\r');
- /* check do we have a free space in the TX FIFO */
- /* get current filling level */
- do
- {
- txFl = ( pAsc->asc_fstat & ASCFSTAT_TXFFLMASK ) >> ASCFSTAT_TXFFLOFF;
- }
- while ( txFl == DANUBEASC_TXFIFO_FULL );
-
- pAsc->asc_tbuf = c; /* write char to Transmit Buffer Register */
-
- /* check for errors */
- if ( pAsc->asc_state & ASCSTATE_TOE )
- {
- SET_BIT(pAsc->asc_whbstate, ASCWHBSTATE_CLRTOE);
- return;
- }
-}
-
-void serial_puts (const char *s)
-{
- while (*s)
- {
- serial_putc (*s++);
- }
-}
-
-int asc_inb(int timeout)
-{
- u32 symbol_mask;
- char c;
- while ((pAsc->asc_fstat & ASCFSTAT_RXFFLMASK) == 0 ) {
- }
- symbol_mask = ((ASC_OPTIONS & ASCOPT_CSIZE) == ASCOPT_CS7) ? (0x7f) : (0xff);
- c = (char)(pAsc->asc_rbuf & symbol_mask);
- return (c);
-}
-
-int serial_getc (void)
-{
- char c;
- while ((pAsc->asc_fstat & ASCFSTAT_RXFFLMASK) == 0 );
- c = (char)(pAsc->asc_rbuf & 0xff);
-
-#ifdef DEBUG_ASC_RAW
- static u8* debug=(u8*)(DEBUG_ASC_RAW_RX_BUF);
- *debug++=c;
-#endif
- return c;
-}
-
-
-
-int serial_tstc (void)
-{
- int res = 1;
-
-#ifdef ASC_FIFO_PRESENT
- if ( (pAsc->asc_fstat & ASCFSTAT_RXFFLMASK) == 0 )
- {
- res = 0;
- }
-#else
- if (!(*(volatile unsigned long*)(SFPI_INTCON_BASEADDR + FBS_ISR) &
- FBS_ISR_AR))
-
- {
- res = 0;
- }
-#endif
-#if 0
- else if ( pAsc->asc_con & ASCCON_FE )
- {
- SET_BIT(pAsc->asc_whbcon, ASCWHBCON_CLRFE);
- res = 0;
- }
- else if ( pAsc->asc_con & ASCCON_PE )
- {
- SET_BIT(pAsc->asc_whbcon, ASCWHBCON_CLRPE);
- res = 0;
- }
- else if ( pAsc->asc_con & ASCCON_OE )
- {
- SET_BIT(pAsc->asc_whbcon, ASCWHBCON_CLROE);
- res = 0;
- }
-#endif
- return res;
-}
-
-
-int serial_start(void)
-{
- return 1;
-}
-
-int serial_stop(void)
-{
- return 1;
-}
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