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-rw-r--r--arch/powerpc/cpu/mpc8xx/serial.c745
1 files changed, 745 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc8xx/serial.c b/arch/powerpc/cpu/mpc8xx/serial.c
new file mode 100644
index 000000000..664db65a5
--- /dev/null
+++ b/arch/powerpc/cpu/mpc8xx/serial.c
@@ -0,0 +1,745 @@
+/*
+ * (C) Copyright 2000
+ * 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 <command.h>
+#include <serial.h>
+#include <watchdog.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if !defined(CONFIG_8xx_CONS_NONE) /* No Console at all */
+
+#if defined(CONFIG_8xx_CONS_SMC1) /* Console on SMC1 */
+#define SMC_INDEX 0
+#define PROFF_SMC PROFF_SMC1
+#define CPM_CR_CH_SMC CPM_CR_CH_SMC1
+
+#elif defined(CONFIG_8xx_CONS_SMC2) /* Console on SMC2 */
+#define SMC_INDEX 1
+#define PROFF_SMC PROFF_SMC2
+#define CPM_CR_CH_SMC CPM_CR_CH_SMC2
+
+#endif /* CONFIG_8xx_CONS_SMCx */
+
+#if defined(CONFIG_8xx_CONS_SCC1) /* Console on SCC1 */
+#define SCC_INDEX 0
+#define PROFF_SCC PROFF_SCC1
+#define CPM_CR_CH_SCC CPM_CR_CH_SCC1
+
+#elif defined(CONFIG_8xx_CONS_SCC2) /* Console on SCC2 */
+#define SCC_INDEX 1
+#define PROFF_SCC PROFF_SCC2
+#define CPM_CR_CH_SCC CPM_CR_CH_SCC2
+
+#elif defined(CONFIG_8xx_CONS_SCC3) /* Console on SCC3 */
+#define SCC_INDEX 2
+#define PROFF_SCC PROFF_SCC3
+#define CPM_CR_CH_SCC CPM_CR_CH_SCC3
+
+#elif defined(CONFIG_8xx_CONS_SCC4) /* Console on SCC4 */
+#define SCC_INDEX 3
+#define PROFF_SCC PROFF_SCC4
+#define CPM_CR_CH_SCC CPM_CR_CH_SCC4
+
+#endif /* CONFIG_8xx_CONS_SCCx */
+
+#if !defined(CONFIG_SYS_SMC_RXBUFLEN)
+#define CONFIG_SYS_SMC_RXBUFLEN 1
+#define CONFIG_SYS_MAXIDLE 0
+#else
+#if !defined(CONFIG_SYS_MAXIDLE)
+#error "you must define CONFIG_SYS_MAXIDLE"
+#endif
+#endif
+
+typedef volatile struct serialbuffer {
+ cbd_t rxbd; /* Rx BD */
+ cbd_t txbd; /* Tx BD */
+ uint rxindex; /* index for next character to read */
+ volatile uchar rxbuf[CONFIG_SYS_SMC_RXBUFLEN];/* rx buffers */
+ volatile uchar txbuf; /* tx buffers */
+} serialbuffer_t;
+
+static void serial_setdivisor(volatile cpm8xx_t *cp)
+{
+ int divisor=(gd->cpu_clk + 8*gd->baudrate)/16/gd->baudrate;
+
+ if(divisor/16>0x1000) {
+ /* bad divisor, assume 50MHz clock and 9600 baud */
+ divisor=(50*1000*1000 + 8*9600)/16/9600;
+ }
+
+#ifdef CONFIG_SYS_BRGCLK_PRESCALE
+ divisor /= CONFIG_SYS_BRGCLK_PRESCALE;
+#endif
+
+ if(divisor<=0x1000) {
+ cp->cp_brgc1=((divisor-1)<<1) | CPM_BRG_EN;
+ } else {
+ cp->cp_brgc1=((divisor/16-1)<<1) | CPM_BRG_EN | CPM_BRG_DIV16;
+ }
+}
+
+#if (defined (CONFIG_8xx_CONS_SMC1) || defined (CONFIG_8xx_CONS_SMC2))
+
+/*
+ * Minimal serial functions needed to use one of the SMC ports
+ * as serial console interface.
+ */
+
+static void smc_setbrg (void)
+{
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile cpm8xx_t *cp = &(im->im_cpm);
+
+ /* Set up the baud rate generator.
+ * See 8xx_io/commproc.c for details.
+ *
+ * Wire BRG1 to SMCx
+ */
+
+ cp->cp_simode = 0x00000000;
+
+ serial_setdivisor(cp);
+}
+
+static int smc_init (void)
+{
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile smc_t *sp;
+ volatile smc_uart_t *up;
+ volatile cpm8xx_t *cp = &(im->im_cpm);
+#if (!defined(CONFIG_8xx_CONS_SMC1)) && (defined(CONFIG_MPC823) || defined(CONFIG_MPC850))
+ volatile iop8xx_t *ip = (iop8xx_t *)&(im->im_ioport);
+#endif
+ uint dpaddr;
+ volatile serialbuffer_t *rtx;
+
+ /* initialize pointers to SMC */
+
+ sp = (smc_t *) &(cp->cp_smc[SMC_INDEX]);
+ up = (smc_uart_t *) &cp->cp_dparam[PROFF_SMC];
+#ifdef CONFIG_SYS_SMC_UCODE_PATCH
+ up = (smc_uart_t *) &cp->cp_dpmem[up->smc_rpbase];
+#else
+ /* Disable relocation */
+ up->smc_rpbase = 0;
+#endif
+
+ /* Disable transmitter/receiver. */
+ sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
+
+ /* Enable SDMA. */
+ im->im_siu_conf.sc_sdcr = 1;
+
+ /* clear error conditions */
+#ifdef CONFIG_SYS_SDSR
+ im->im_sdma.sdma_sdsr = CONFIG_SYS_SDSR;
+#else
+ im->im_sdma.sdma_sdsr = 0x83;
+#endif
+
+ /* clear SDMA interrupt mask */
+#ifdef CONFIG_SYS_SDMR
+ im->im_sdma.sdma_sdmr = CONFIG_SYS_SDMR;
+#else
+ im->im_sdma.sdma_sdmr = 0x00;
+#endif
+
+#if defined(CONFIG_8xx_CONS_SMC1)
+ /* Use Port B for SMC1 instead of other functions. */
+ cp->cp_pbpar |= 0x000000c0;
+ cp->cp_pbdir &= ~0x000000c0;
+ cp->cp_pbodr &= ~0x000000c0;
+#else /* CONFIG_8xx_CONS_SMC2 */
+# if defined(CONFIG_MPC823) || defined(CONFIG_MPC850)
+ /* Use Port A for SMC2 instead of other functions. */
+ ip->iop_papar |= 0x00c0;
+ ip->iop_padir &= ~0x00c0;
+ ip->iop_paodr &= ~0x00c0;
+# else /* must be a 860 then */
+ /* Use Port B for SMC2 instead of other functions.
+ */
+ cp->cp_pbpar |= 0x00000c00;
+ cp->cp_pbdir &= ~0x00000c00;
+ cp->cp_pbodr &= ~0x00000c00;
+# endif
+#endif
+
+#if defined(CONFIG_FADS) || defined(CONFIG_ADS)
+ /* Enable RS232 */
+#if defined(CONFIG_8xx_CONS_SMC1)
+ *((uint *) BCSR1) &= ~BCSR1_RS232EN_1;
+#else
+ *((uint *) BCSR1) &= ~BCSR1_RS232EN_2;
+#endif
+#endif /* CONFIG_FADS */
+
+#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
+ /* Enable Monitor Port Transceiver */
+ *((uchar *) BCSR0) |= BCSR0_ENMONXCVR ;
+#endif /* CONFIG_RPXLITE */
+
+ /* Set the physical address of the host memory buffers in
+ * the buffer descriptors.
+ */
+
+#ifdef CONFIG_SYS_ALLOC_DPRAM
+ /* allocate
+ * size of struct serialbuffer with bd rx/tx, buffer rx/tx and rx index
+ */
+ dpaddr = dpram_alloc_align((sizeof(serialbuffer_t)), 8);
+#else
+ dpaddr = CPM_SERIAL_BASE ;
+#endif
+
+ rtx = (serialbuffer_t *)&cp->cp_dpmem[dpaddr];
+ /* Allocate space for two buffer descriptors in the DP ram.
+ * For now, this address seems OK, but it may have to
+ * change with newer versions of the firmware.
+ * damm: allocating space after the two buffers for rx/tx data
+ */
+
+ rtx->rxbd.cbd_bufaddr = (uint) &rtx->rxbuf;
+ rtx->rxbd.cbd_sc = 0;
+
+ rtx->txbd.cbd_bufaddr = (uint) &rtx->txbuf;
+ rtx->txbd.cbd_sc = 0;
+
+ /* Set up the uart parameters in the parameter ram. */
+ up->smc_rbase = dpaddr;
+ up->smc_tbase = dpaddr+sizeof(cbd_t);
+ up->smc_rfcr = SMC_EB;
+ up->smc_tfcr = SMC_EB;
+#if defined (CONFIG_SYS_SMC_UCODE_PATCH)
+ up->smc_rbptr = up->smc_rbase;
+ up->smc_tbptr = up->smc_tbase;
+ up->smc_rstate = 0;
+ up->smc_tstate = 0;
+#endif
+
+#if defined(CONFIG_MBX)
+ board_serial_init();
+#endif /* CONFIG_MBX */
+
+ /* Set UART mode, 8 bit, no parity, one stop.
+ * Enable receive and transmit.
+ */
+ sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART;
+
+ /* Mask all interrupts and remove anything pending.
+ */
+ sp->smc_smcm = 0;
+ sp->smc_smce = 0xff;
+
+#ifdef CONFIG_SYS_SPC1920_SMC1_CLK4
+ /* clock source is PLD */
+
+ /* set freq to 19200 Baud */
+ *((volatile uchar *) CONFIG_SYS_SPC1920_PLD_BASE+6) = 0x3;
+ /* configure clk4 as input */
+ im->im_ioport.iop_pdpar |= 0x800;
+ im->im_ioport.iop_pddir &= ~0x800;
+
+ cp->cp_simode = ((cp->cp_simode & ~0xf000) | 0x7000);
+#else
+ /* Set up the baud rate generator */
+ smc_setbrg ();
+#endif
+
+ /* Make the first buffer the only buffer. */
+ rtx->txbd.cbd_sc |= BD_SC_WRAP;
+ rtx->rxbd.cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
+
+ /* single/multi character receive. */
+ up->smc_mrblr = CONFIG_SYS_SMC_RXBUFLEN;
+ up->smc_maxidl = CONFIG_SYS_MAXIDLE;
+ rtx->rxindex = 0;
+
+ /* Initialize Tx/Rx parameters. */
+ while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
+ ;
+
+ cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+
+ while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
+ ;
+
+ /* Enable transmitter/receiver. */
+ sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
+
+ return (0);
+}
+
+static void
+smc_putc(const char c)
+{
+ volatile smc_uart_t *up;
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile cpm8xx_t *cpmp = &(im->im_cpm);
+ volatile serialbuffer_t *rtx;
+
+#ifdef CONFIG_MODEM_SUPPORT
+ if (gd->be_quiet)
+ return;
+#endif
+
+ if (c == '\n')
+ smc_putc ('\r');
+
+ up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_SMC];
+#ifdef CONFIG_SYS_SMC_UCODE_PATCH
+ up = (smc_uart_t *) &cpmp->cp_dpmem[up->smc_rpbase];
+#endif
+
+ rtx = (serialbuffer_t *)&cpmp->cp_dpmem[up->smc_rbase];
+
+ /* Wait for last character to go. */
+ rtx->txbuf = c;
+ rtx->txbd.cbd_datlen = 1;
+ rtx->txbd.cbd_sc |= BD_SC_READY;
+ __asm__("eieio");
+
+ while (rtx->txbd.cbd_sc & BD_SC_READY) {
+ WATCHDOG_RESET ();
+ __asm__("eieio");
+ }
+}
+
+static void
+smc_puts (const char *s)
+{
+ while (*s) {
+ smc_putc (*s++);
+ }
+}
+
+static int
+smc_getc(void)
+{
+ volatile smc_uart_t *up;
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile cpm8xx_t *cpmp = &(im->im_cpm);
+ volatile serialbuffer_t *rtx;
+ unsigned char c;
+
+ up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_SMC];
+#ifdef CONFIG_SYS_SMC_UCODE_PATCH
+ up = (smc_uart_t *) &cpmp->cp_dpmem[up->smc_rpbase];
+#endif
+ rtx = (serialbuffer_t *)&cpmp->cp_dpmem[up->smc_rbase];
+
+ /* Wait for character to show up. */
+ while (rtx->rxbd.cbd_sc & BD_SC_EMPTY)
+ WATCHDOG_RESET ();
+
+ /* the characters are read one by one,
+ * use the rxindex to know the next char to deliver
+ */
+ c = *(unsigned char *) (rtx->rxbd.cbd_bufaddr+rtx->rxindex);
+ rtx->rxindex++;
+
+ /* check if all char are readout, then make prepare for next receive */
+ if (rtx->rxindex >= rtx->rxbd.cbd_datlen) {
+ rtx->rxindex = 0;
+ rtx->rxbd.cbd_sc |= BD_SC_EMPTY;
+ }
+ return(c);
+}
+
+static int
+smc_tstc(void)
+{
+ volatile smc_uart_t *up;
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile cpm8xx_t *cpmp = &(im->im_cpm);
+ volatile serialbuffer_t *rtx;
+
+ up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_SMC];
+#ifdef CONFIG_SYS_SMC_UCODE_PATCH
+ up = (smc_uart_t *) &cpmp->cp_dpmem[up->smc_rpbase];
+#endif
+
+ rtx = (serialbuffer_t *)&cpmp->cp_dpmem[up->smc_rbase];
+
+ return !(rtx->rxbd.cbd_sc & BD_SC_EMPTY);
+}
+
+struct serial_device serial_smc_device =
+{
+ "serial_smc",
+ "SMC",
+ smc_init,
+ smc_setbrg,
+ smc_getc,
+ smc_tstc,
+ smc_putc,
+ smc_puts,
+};
+
+#endif /* CONFIG_8xx_CONS_SMC1 || CONFIG_8xx_CONS_SMC2 */
+
+#if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) || \
+ defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
+
+static void
+scc_setbrg (void)
+{
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile cpm8xx_t *cp = &(im->im_cpm);
+
+ /* Set up the baud rate generator.
+ * See 8xx_io/commproc.c for details.
+ *
+ * Wire BRG1 to SCCx
+ */
+
+ cp->cp_sicr &= ~(0x000000FF << (8 * SCC_INDEX));
+
+ serial_setdivisor(cp);
+}
+
+static int scc_init (void)
+{
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile scc_t *sp;
+ volatile scc_uart_t *up;
+ volatile cbd_t *tbdf, *rbdf;
+ volatile cpm8xx_t *cp = &(im->im_cpm);
+ uint dpaddr;
+#if (SCC_INDEX != 2) || !defined(CONFIG_MPC850)
+ volatile iop8xx_t *ip = (iop8xx_t *)&(im->im_ioport);
+#endif
+
+ /* initialize pointers to SCC */
+
+ sp = (scc_t *) &(cp->cp_scc[SCC_INDEX]);
+ up = (scc_uart_t *) &cp->cp_dparam[PROFF_SCC];
+
+#if defined(CONFIG_LWMON) && defined(CONFIG_8xx_CONS_SCC2)
+ { /* Disable Ethernet, enable Serial */
+ uchar c;
+
+ c = pic_read (0x61);
+ c &= ~0x40; /* enable COM3 */
+ c |= 0x80; /* disable Ethernet */
+ pic_write (0x61, c);
+
+ /* enable RTS2 */
+ cp->cp_pbpar |= 0x2000;
+ cp->cp_pbdat |= 0x2000;
+ cp->cp_pbdir |= 0x2000;
+ }
+#endif /* CONFIG_LWMON */
+
+ /* Disable transmitter/receiver. */
+ sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+#if (SCC_INDEX == 2) && defined(CONFIG_MPC850)
+ /*
+ * The MPC850 has SCC3 on Port B
+ */
+ cp->cp_pbpar |= 0x06;
+ cp->cp_pbdir &= ~0x06;
+ cp->cp_pbodr &= ~0x06;
+
+#elif (SCC_INDEX < 2) || !defined(CONFIG_IP860)
+ /*
+ * Standard configuration for SCC's is on Part A
+ */
+ ip->iop_papar |= ((3 << (2 * SCC_INDEX)));
+ ip->iop_padir &= ~((3 << (2 * SCC_INDEX)));
+ ip->iop_paodr &= ~((3 << (2 * SCC_INDEX)));
+#else
+ /*
+ * The IP860 has SCC3 and SCC4 on Port D
+ */
+ ip->iop_pdpar |= ((3 << (2 * SCC_INDEX)));
+#endif
+
+ /* Allocate space for two buffer descriptors in the DP ram. */
+
+#ifdef CONFIG_SYS_ALLOC_DPRAM
+ dpaddr = dpram_alloc_align (sizeof(cbd_t)*2 + 2, 8) ;
+#else
+ dpaddr = CPM_SERIAL2_BASE ;
+#endif
+
+ /* Enable SDMA. */
+ im->im_siu_conf.sc_sdcr = 0x0001;
+
+ /* Set the physical address of the host memory buffers in
+ * the buffer descriptors.
+ */
+
+ rbdf = (cbd_t *)&cp->cp_dpmem[dpaddr];
+ rbdf->cbd_bufaddr = (uint) (rbdf+2);
+ rbdf->cbd_sc = 0;
+ tbdf = rbdf + 1;
+ tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
+ tbdf->cbd_sc = 0;
+
+ /* Set up the baud rate generator. */
+ scc_setbrg ();
+
+ /* Set up the uart parameters in the parameter ram. */
+ up->scc_genscc.scc_rbase = dpaddr;
+ up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t);
+
+ /* Initialize Tx/Rx parameters. */
+ while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
+ ;
+ cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SCC, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+
+ while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
+ ;
+
+ up->scc_genscc.scc_rfcr = SCC_EB | 0x05;
+ up->scc_genscc.scc_tfcr = SCC_EB | 0x05;
+
+ up->scc_genscc.scc_mrblr = 1; /* Single character receive */
+ up->scc_maxidl = 0; /* disable max idle */
+ up->scc_brkcr = 1; /* send one break character on stop TX */
+ up->scc_parec = 0;
+ up->scc_frmec = 0;
+ up->scc_nosec = 0;
+ up->scc_brkec = 0;
+ up->scc_uaddr1 = 0;
+ up->scc_uaddr2 = 0;
+ up->scc_toseq = 0;
+ up->scc_char1 = 0x8000;
+ up->scc_char2 = 0x8000;
+ up->scc_char3 = 0x8000;
+ up->scc_char4 = 0x8000;
+ up->scc_char5 = 0x8000;
+ up->scc_char6 = 0x8000;
+ up->scc_char7 = 0x8000;
+ up->scc_char8 = 0x8000;
+ up->scc_rccm = 0xc0ff;
+
+ /* Set low latency / small fifo. */
+ sp->scc_gsmrh = SCC_GSMRH_RFW;
+
+ /* Set SCC(x) clock mode to 16x
+ * See 8xx_io/commproc.c for details.
+ *
+ * Wire BRG1 to SCCn
+ */
+
+ /* Set UART mode, clock divider 16 on Tx and Rx */
+ sp->scc_gsmrl &= ~0xF;
+ sp->scc_gsmrl |=
+ (SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16);
+
+ sp->scc_psmr = 0;
+ sp->scc_psmr |= SCU_PSMR_CL;
+
+ /* Mask all interrupts and remove anything pending. */
+ sp->scc_sccm = 0;
+ sp->scc_scce = 0xffff;
+ sp->scc_dsr = 0x7e7e;
+ sp->scc_psmr = 0x3000;
+
+ /* Make the first buffer the only buffer. */
+ tbdf->cbd_sc |= BD_SC_WRAP;
+ rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
+
+ /* Enable transmitter/receiver. */
+ sp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+ return (0);
+}
+
+static void
+scc_putc(const char c)
+{
+ volatile cbd_t *tbdf;
+ volatile char *buf;
+ volatile scc_uart_t *up;
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile cpm8xx_t *cpmp = &(im->im_cpm);
+
+#ifdef CONFIG_MODEM_SUPPORT
+ if (gd->be_quiet)
+ return;
+#endif
+
+ if (c == '\n')
+ scc_putc ('\r');
+
+ up = (scc_uart_t *)&cpmp->cp_dparam[PROFF_SCC];
+
+ tbdf = (cbd_t *)&cpmp->cp_dpmem[up->scc_genscc.scc_tbase];
+
+ /* Wait for last character to go. */
+
+ buf = (char *)tbdf->cbd_bufaddr;
+
+ *buf = c;
+ tbdf->cbd_datlen = 1;
+ tbdf->cbd_sc |= BD_SC_READY;
+ __asm__("eieio");
+
+ while (tbdf->cbd_sc & BD_SC_READY) {
+ __asm__("eieio");
+ WATCHDOG_RESET ();
+ }
+}
+
+static void
+scc_puts (const char *s)
+{
+ while (*s) {
+ scc_putc (*s++);
+ }
+}
+
+static int
+scc_getc(void)
+{
+ volatile cbd_t *rbdf;
+ volatile unsigned char *buf;
+ volatile scc_uart_t *up;
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile cpm8xx_t *cpmp = &(im->im_cpm);
+ unsigned char c;
+
+ up = (scc_uart_t *)&cpmp->cp_dparam[PROFF_SCC];
+
+ rbdf = (cbd_t *)&cpmp->cp_dpmem[up->scc_genscc.scc_rbase];
+
+ /* Wait for character to show up. */
+ buf = (unsigned char *)rbdf->cbd_bufaddr;
+
+ while (rbdf->cbd_sc & BD_SC_EMPTY)
+ WATCHDOG_RESET ();
+
+ c = *buf;
+ rbdf->cbd_sc |= BD_SC_EMPTY;
+
+ return(c);
+}
+
+static int
+scc_tstc(void)
+{
+ volatile cbd_t *rbdf;
+ volatile scc_uart_t *up;
+ volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ volatile cpm8xx_t *cpmp = &(im->im_cpm);
+
+ up = (scc_uart_t *)&cpmp->cp_dparam[PROFF_SCC];
+
+ rbdf = (cbd_t *)&cpmp->cp_dpmem[up->scc_genscc.scc_rbase];
+
+ return(!(rbdf->cbd_sc & BD_SC_EMPTY));
+}
+
+struct serial_device serial_scc_device =
+{
+ "serial_scc",
+ "SCC",
+ scc_init,
+ scc_setbrg,
+ scc_getc,
+ scc_tstc,
+ scc_putc,
+ scc_puts,
+};
+
+#endif /* CONFIG_8xx_CONS_SCCx */
+
+#ifdef CONFIG_MODEM_SUPPORT
+void disable_putc(void)
+{
+ gd->be_quiet = 1;
+}
+
+void enable_putc(void)
+{
+ gd->be_quiet = 0;
+}
+#endif
+
+#if defined(CONFIG_CMD_KGDB)
+
+void
+kgdb_serial_init(void)
+{
+ int i = -1;
+
+ if (strcmp(default_serial_console()->ctlr, "SMC") == 0)
+ {
+#if defined(CONFIG_8xx_CONS_SMC1)
+ i = 1;
+#elif defined(CONFIG_8xx_CONS_SMC2)
+ i = 2;
+#endif
+ }
+ else if (strcmp(default_serial_console()->ctlr, "SMC") == 0)
+ {
+#if defined(CONFIG_8xx_CONS_SCC1)
+ i = 1;
+#elif defined(CONFIG_8xx_CONS_SCC2)
+ i = 2;
+#elif defined(CONFIG_8xx_CONS_SCC3)
+ i = 3;
+#elif defined(CONFIG_8xx_CONS_SCC4)
+ i = 4;
+#endif
+ }
+
+ if (i >= 0)
+ {
+ serial_printf("[on %s%d] ", default_serial_console()->ctlr, i);
+ }
+}
+
+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
+
+#endif /* CONFIG_8xx_CONS_NONE */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 14:55:37 +0000