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Diffstat (limited to 'arch/powerpc/cpu/mpc8260/serial_scc.c')
-rw-r--r--arch/powerpc/cpu/mpc8260/serial_scc.c492
1 files changed, 0 insertions, 492 deletions
diff --git a/arch/powerpc/cpu/mpc8260/serial_scc.c b/arch/powerpc/cpu/mpc8260/serial_scc.c
deleted file mode 100644
index 8bfb3dedcb..0000000000
--- a/arch/powerpc/cpu/mpc8260/serial_scc.c
+++ /dev/null
@@ -1,492 +0,0 @@
-/*
- * (C) Copyright 2000
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- *
- * Hacked for MPC8260 by Murray.Jensen@cmst.csiro.au, 19-Oct-00.
- */
-
-/*
- * Minimal serial functions needed to use one of the SCC ports
- * as serial console interface.
- */
-
-#include <common.h>
-#include <mpc8260.h>
-#include <asm/cpm_8260.h>
-#include <serial.h>
-#include <linux/compiler.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#if defined(CONFIG_CONS_ON_SCC)
-
-#if CONFIG_CONS_INDEX == 1 /* Console on SCC1 */
-
-#define SCC_INDEX 0
-#define PROFF_SCC PROFF_SCC1
-#define CMXSCR_MASK (CMXSCR_GR1|CMXSCR_SC1|\
- CMXSCR_RS1CS_MSK|CMXSCR_TS1CS_MSK)
-#define CMXSCR_VALUE (CMXSCR_RS1CS_BRG1|CMXSCR_TS1CS_BRG1)
-#define CPM_CR_SCC_PAGE CPM_CR_SCC1_PAGE
-#define CPM_CR_SCC_SBLOCK CPM_CR_SCC1_SBLOCK
-
-#elif CONFIG_CONS_INDEX == 2 /* Console on SCC2 */
-
-#define SCC_INDEX 1
-#define PROFF_SCC PROFF_SCC2
-#define CMXSCR_MASK (CMXSCR_GR2|CMXSCR_SC2|\
- CMXSCR_RS2CS_MSK|CMXSCR_TS2CS_MSK)
-#define CMXSCR_VALUE (CMXSCR_RS2CS_BRG2|CMXSCR_TS2CS_BRG2)
-#define CPM_CR_SCC_PAGE CPM_CR_SCC2_PAGE
-#define CPM_CR_SCC_SBLOCK CPM_CR_SCC2_SBLOCK
-
-#elif CONFIG_CONS_INDEX == 3 /* Console on SCC3 */
-
-#define SCC_INDEX 2
-#define PROFF_SCC PROFF_SCC3
-#define CMXSCR_MASK (CMXSCR_GR3|CMXSCR_SC3|\
- CMXSCR_RS3CS_MSK|CMXSCR_TS3CS_MSK)
-#define CMXSCR_VALUE (CMXSCR_RS3CS_BRG3|CMXSCR_TS3CS_BRG3)
-#define CPM_CR_SCC_PAGE CPM_CR_SCC3_PAGE
-#define CPM_CR_SCC_SBLOCK CPM_CR_SCC3_SBLOCK
-
-#elif CONFIG_CONS_INDEX == 4 /* Console on SCC4 */
-
-#define SCC_INDEX 3
-#define PROFF_SCC PROFF_SCC4
-#define CMXSCR_MASK (CMXSCR_GR4|CMXSCR_SC4|\
- CMXSCR_RS4CS_MSK|CMXSCR_TS4CS_MSK)
-#define CMXSCR_VALUE (CMXSCR_RS4CS_BRG4|CMXSCR_TS4CS_BRG4)
-#define CPM_CR_SCC_PAGE CPM_CR_SCC4_PAGE
-#define CPM_CR_SCC_SBLOCK CPM_CR_SCC4_SBLOCK
-
-#else
-
-#error "console not correctly defined"
-
-#endif
-
-static int mpc8260_scc_serial_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 cpm8260_t *cp = &(im->im_cpm);
- uint dpaddr;
-
- /* initialize pointers to SCC */
-
- sp = (scc_t *) &(im->im_scc[SCC_INDEX]);
- up = (scc_uart_t *)&im->im_dprambase[PROFF_SCC];
-
- /* Disable transmitter/receiver.
- */
- sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
-
- /* put the SCC channel into NMSI (non multiplexd serial interface)
- * mode and wire the selected SCC Tx and Rx clocks to BRGx (15-15).
- */
- im->im_cpmux.cmx_scr = (im->im_cpmux.cmx_scr&~CMXSCR_MASK)|CMXSCR_VALUE;
-
- /* Set up the baud rate generator.
- */
- serial_setbrg ();
-
- /* Allocate space for two buffer descriptors in the DP ram.
- * damm: allocating space after the two buffers for rx/tx data
- */
-
- dpaddr = m8260_cpm_dpalloc((2 * sizeof (cbd_t)) + 2, 16);
-
- /* Set the physical address of the host memory buffers in
- * the buffer descriptors.
- */
- rbdf = (cbd_t *)&im->im_dprambase[dpaddr];
- rbdf->cbd_bufaddr = (uint) (rbdf+2);
- rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP;
- tbdf = rbdf + 1;
- tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
- tbdf->cbd_sc = BD_SC_WRAP;
-
- /* Set up the uart parameters in the parameter ram.
- */
- up->scc_genscc.scc_rbase = dpaddr;
- up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t);
- up->scc_genscc.scc_rfcr = CPMFCR_EB;
- up->scc_genscc.scc_tfcr = CPMFCR_EB;
- up->scc_genscc.scc_mrblr = 1;
- up->scc_maxidl = 0;
- up->scc_brkcr = 1;
- 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 = up->scc_char2 = up->scc_char3 = up->scc_char4 = 0x8000;
- up->scc_char5 = up->scc_char6 = up->scc_char7 = up->scc_char8 = 0x8000;
- up->scc_rccm = 0xc0ff;
-
- /* Mask all interrupts and remove anything pending.
- */
- sp->scc_sccm = 0;
- sp->scc_scce = 0xffff;
-
- /* Set 8 bit FIFO, 16 bit oversampling and UART mode.
- */
- sp->scc_gsmrh = SCC_GSMRH_RFW; /* 8 bit FIFO */
- sp->scc_gsmrl = \
- SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16 | SCC_GSMRL_MODE_UART;
-
- /* Set CTS flow control, 1 stop bit, 8 bit character length,
- * normal async UART mode, no parity
- */
- sp->scc_psmr = SCU_PSMR_FLC | SCU_PSMR_CL;
-
- /* execute the "Init Rx and Tx params" CP command.
- */
-
- while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
-
- cp->cp_cpcr = mk_cr_cmd(CPM_CR_SCC_PAGE, CPM_CR_SCC_SBLOCK,
- 0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
-
- while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
-
- /* Enable transmitter/receiver.
- */
- sp->scc_gsmrl |= SCC_GSMRL_ENR | SCC_GSMRL_ENT;
-
- return (0);
-}
-
-static void mpc8260_scc_serial_setbrg(void)
-{
-#if defined(CONFIG_CONS_USE_EXTC)
- m8260_cpm_extcbrg(SCC_INDEX, gd->baudrate,
- CONFIG_CONS_EXTC_RATE, CONFIG_CONS_EXTC_PINSEL);
-#else
- m8260_cpm_setbrg(SCC_INDEX, gd->baudrate);
-#endif
-}
-
-static void mpc8260_scc_serial_putc(const char c)
-{
- volatile scc_uart_t *up;
- volatile cbd_t *tbdf;
- volatile immap_t *im;
-
- if (c == '\n')
- serial_putc ('\r');
-
- im = (immap_t *)CONFIG_SYS_IMMR;
- up = (scc_uart_t *)&im->im_dprambase[PROFF_SCC];
- tbdf = (cbd_t *)&im->im_dprambase[up->scc_genscc.scc_tbase];
-
- /* Wait for last character to go.
- */
- while (tbdf->cbd_sc & BD_SC_READY)
- ;
-
- /* Load the character into the transmit buffer.
- */
- *(volatile char *)tbdf->cbd_bufaddr = c;
- tbdf->cbd_datlen = 1;
- tbdf->cbd_sc |= BD_SC_READY;
-}
-
-static int mpc8260_scc_serial_getc(void)
-{
- volatile cbd_t *rbdf;
- volatile scc_uart_t *up;
- volatile immap_t *im;
- unsigned char c;
-
- im = (immap_t *)CONFIG_SYS_IMMR;
- up = (scc_uart_t *)&im->im_dprambase[PROFF_SCC];
- rbdf = (cbd_t *)&im->im_dprambase[up->scc_genscc.scc_rbase];
-
- /* Wait for character to show up.
- */
- while (rbdf->cbd_sc & BD_SC_EMPTY)
- ;
-
- /* Grab the char and clear the buffer again.
- */
- c = *(volatile unsigned char *)rbdf->cbd_bufaddr;
- rbdf->cbd_sc |= BD_SC_EMPTY;
-
- return (c);
-}
-
-static int mpc8260_scc_serial_tstc(void)
-{
- volatile cbd_t *rbdf;
- volatile scc_uart_t *up;
- volatile immap_t *im;
-
- im = (immap_t *)CONFIG_SYS_IMMR;
- up = (scc_uart_t *)&im->im_dprambase[PROFF_SCC];
- rbdf = (cbd_t *)&im->im_dprambase[up->scc_genscc.scc_rbase];
-
- return ((rbdf->cbd_sc & BD_SC_EMPTY) == 0);
-}
-
-static struct serial_device mpc8260_scc_serial_drv = {
- .name = "mpc8260_scc_uart",
- .start = mpc8260_scc_serial_init,
- .stop = NULL,
- .setbrg = mpc8260_scc_serial_setbrg,
- .putc = mpc8260_scc_serial_putc,
- .puts = default_serial_puts,
- .getc = mpc8260_scc_serial_getc,
- .tstc = mpc8260_scc_serial_tstc,
-};
-
-void mpc8260_scc_serial_initialize(void)
-{
- serial_register(&mpc8260_scc_serial_drv);
-}
-
-__weak struct serial_device *default_serial_console(void)
-{
- return &mpc8260_scc_serial_drv;
-}
-#endif /* CONFIG_CONS_ON_SCC */
-
-#if defined(CONFIG_KGDB_ON_SCC)
-
-#if defined(CONFIG_CONS_ON_SCC) && CONFIG_KGDB_INDEX == CONFIG_CONS_INDEX
-#error Whoops! serial console and kgdb are on the same scc serial port
-#endif
-
-#if CONFIG_KGDB_INDEX == 1 /* KGDB Port on SCC1 */
-
-#define KGDB_SCC_INDEX 0
-#define KGDB_PROFF_SCC PROFF_SCC1
-#define KGDB_CMXSCR_MASK (CMXSCR_GR1|CMXSCR_SC1|\
- CMXSCR_RS1CS_MSK|CMXSCR_TS1CS_MSK)
-#define KGDB_CMXSCR_VALUE (CMXSCR_RS1CS_BRG1|CMXSCR_TS1CS_BRG1)
-#define KGDB_CPM_CR_SCC_PAGE CPM_CR_SCC1_PAGE
-#define KGDB_CPM_CR_SCC_SBLOCK CPM_CR_SCC1_SBLOCK
-
-#elif CONFIG_KGDB_INDEX == 2 /* KGDB Port on SCC2 */
-
-#define KGDB_SCC_INDEX 1
-#define KGDB_PROFF_SCC PROFF_SCC2
-#define KGDB_CMXSCR_MASK (CMXSCR_GR2|CMXSCR_SC2|\
- CMXSCR_RS2CS_MSK|CMXSCR_TS2CS_MSK)
-#define KGDB_CMXSCR_VALUE (CMXSCR_RS2CS_BRG2|CMXSCR_TS2CS_BRG2)
-#define KGDB_CPM_CR_SCC_PAGE CPM_CR_SCC2_PAGE
-#define KGDB_CPM_CR_SCC_SBLOCK CPM_CR_SCC2_SBLOCK
-
-#elif CONFIG_KGDB_INDEX == 3 /* KGDB Port on SCC3 */
-
-#define KGDB_SCC_INDEX 2
-#define KGDB_PROFF_SCC PROFF_SCC3
-#define KGDB_CMXSCR_MASK (CMXSCR_GR3|CMXSCR_SC3|\
- CMXSCR_RS3CS_MSK|CMXSCR_TS3CS_MSK)
-#define KGDB_CMXSCR_VALUE (CMXSCR_RS3CS_BRG3|CMXSCR_TS3CS_BRG3)
-#define KGDB_CPM_CR_SCC_PAGE CPM_CR_SCC3_PAGE
-#define KGDB_CPM_CR_SCC_SBLOCK CPM_CR_SCC3_SBLOCK
-
-#elif CONFIG_KGDB_INDEX == 4 /* KGDB Port on SCC4 */
-
-#define KGDB_SCC_INDEX 3
-#define KGDB_PROFF_SCC PROFF_SCC4
-#define KGDB_CMXSCR_MASK (CMXSCR_GR4|CMXSCR_SC4|\
- CMXSCR_RS4CS_MSK|CMXSCR_TS4CS_MSK)
-#define KGDB_CMXSCR_VALUE (CMXSCR_RS4CS_BRG4|CMXSCR_TS4CS_BRG4)
-#define KGDB_CPM_CR_SCC_PAGE CPM_CR_SCC4_PAGE
-#define KGDB_CPM_CR_SCC_SBLOCK CPM_CR_SCC4_SBLOCK
-
-#else
-
-#error "kgdb serial port not correctly defined"
-
-#endif
-
-void
-kgdb_serial_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 cpm8260_t *cp = &(im->im_cpm);
- uint dpaddr, speed = CONFIG_KGDB_BAUDRATE;
- char *s, *e;
-
- if ((s = getenv("kgdbrate")) != NULL && *s != '\0') {
- ulong rate = simple_strtoul(s, &e, 10);
- if (e > s && *e == '\0')
- speed = rate;
- }
-
- /* initialize pointers to SCC */
-
- sp = (scc_t *) &(im->im_scc[KGDB_SCC_INDEX]);
- up = (scc_uart_t *)&im->im_dprambase[KGDB_PROFF_SCC];
-
- /* Disable transmitter/receiver.
- */
- sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
-
- /* put the SCC channel into NMSI (non multiplexd serial interface)
- * mode and wire the selected SCC Tx and Rx clocks to BRGx (15-15).
- */
- im->im_cpmux.cmx_scr = \
- (im->im_cpmux.cmx_scr & ~KGDB_CMXSCR_MASK) | KGDB_CMXSCR_VALUE;
-
- /* Set up the baud rate generator.
- */
-#if defined(CONFIG_KGDB_USE_EXTC)
- m8260_cpm_extcbrg(KGDB_SCC_INDEX, speed,
- CONFIG_KGDB_EXTC_RATE, CONFIG_KGDB_EXTC_PINSEL);
-#else
- m8260_cpm_setbrg(KGDB_SCC_INDEX, speed);
-#endif
-
- /* Allocate space for two buffer descriptors in the DP ram.
- * damm: allocating space after the two buffers for rx/tx data
- */
-
- dpaddr = m8260_cpm_dpalloc((2 * sizeof (cbd_t)) + 2, 16);
-
- /* Set the physical address of the host memory buffers in
- * the buffer descriptors.
- */
- rbdf = (cbd_t *)&im->im_dprambase[dpaddr];
- rbdf->cbd_bufaddr = (uint) (rbdf+2);
- rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP;
- tbdf = rbdf + 1;
- tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
- tbdf->cbd_sc = BD_SC_WRAP;
-
- /* Set up the uart parameters in the parameter ram.
- */
- up->scc_genscc.scc_rbase = dpaddr;
- up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t);
- up->scc_genscc.scc_rfcr = CPMFCR_EB;
- up->scc_genscc.scc_tfcr = CPMFCR_EB;
- up->scc_genscc.scc_mrblr = 1;
- up->scc_maxidl = 0;
- up->scc_brkcr = 1;
- 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 = up->scc_char2 = up->scc_char3 = up->scc_char4 = 0x8000;
- up->scc_char5 = up->scc_char6 = up->scc_char7 = up->scc_char8 = 0x8000;
- up->scc_rccm = 0xc0ff;
-
- /* Mask all interrupts and remove anything pending.
- */
- sp->scc_sccm = 0;
- sp->scc_scce = 0xffff;
-
- /* Set 8 bit FIFO, 16 bit oversampling and UART mode.
- */
- sp->scc_gsmrh = SCC_GSMRH_RFW; /* 8 bit FIFO */
- sp->scc_gsmrl = \
- SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16 | SCC_GSMRL_MODE_UART;
-
- /* Set CTS flow control, 1 stop bit, 8 bit character length,
- * normal async UART mode, no parity
- */
- sp->scc_psmr = SCU_PSMR_FLC | SCU_PSMR_CL;
-
- /* execute the "Init Rx and Tx params" CP command.
- */
-
- while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
-
- cp->cp_cpcr = mk_cr_cmd(KGDB_CPM_CR_SCC_PAGE, KGDB_CPM_CR_SCC_SBLOCK,
- 0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
-
- while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
-
- /* Enable transmitter/receiver.
- */
- sp->scc_gsmrl |= SCC_GSMRL_ENR | SCC_GSMRL_ENT;
-
- printf("SCC%d at %dbps ", CONFIG_KGDB_INDEX, speed);
-}
-
-void
-putDebugChar(const char c)
-{
- volatile scc_uart_t *up;
- volatile cbd_t *tbdf;
- volatile immap_t *im;
-
- if (c == '\n')
- putDebugChar ('\r');
-
- im = (immap_t *)CONFIG_SYS_IMMR;
- up = (scc_uart_t *)&im->im_dprambase[KGDB_PROFF_SCC];
- tbdf = (cbd_t *)&im->im_dprambase[up->scc_genscc.scc_tbase];
-
- /* Wait for last character to go.
- */
- while (tbdf->cbd_sc & BD_SC_READY)
- ;
-
- /* Load the character into the transmit buffer.
- */
- *(volatile char *)tbdf->cbd_bufaddr = c;
- tbdf->cbd_datlen = 1;
- tbdf->cbd_sc |= BD_SC_READY;
-}
-
-void
-putDebugStr (const char *s)
-{
- while (*s) {
- putDebugChar (*s++);
- }
-}
-
-int
-getDebugChar(void)
-{
- volatile cbd_t *rbdf;
- volatile scc_uart_t *up;
- volatile immap_t *im;
- unsigned char c;
-
- im = (immap_t *)CONFIG_SYS_IMMR;
- up = (scc_uart_t *)&im->im_dprambase[KGDB_PROFF_SCC];
- rbdf = (cbd_t *)&im->im_dprambase[up->scc_genscc.scc_rbase];
-
- /* Wait for character to show up.
- */
- while (rbdf->cbd_sc & BD_SC_EMPTY)
- ;
-
- /* Grab the char and clear the buffer again.
- */
- c = *(volatile unsigned char *)rbdf->cbd_bufaddr;
- rbdf->cbd_sc |= BD_SC_EMPTY;
-
- return (c);
-}
-
-void
-kgdb_interruptible(int yes)
-{
- return;
-}
-
-#endif /* CONFIG_KGDB_ON_SCC */
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