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Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/serial_scc.c')
-rw-r--r--arch/powerpc/cpu/mpc85xx/serial_scc.c262
1 files changed, 0 insertions, 262 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/serial_scc.c b/arch/powerpc/cpu/mpc85xx/serial_scc.c
deleted file mode 100644
index a2505d1..0000000
--- a/arch/powerpc/cpu/mpc85xx/serial_scc.c
+++ /dev/null
@@ -1,262 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * (C) Copyright 2003 Motorola Inc.
- * Xianghua Xiao (X.Xiao@motorola.com)
- * Modified based on 8260 for 8560.
- *
- * (C) Copyright 2000
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * 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 <asm/cpm_85xx.h>
-#include <serial.h>
-#include <asm/global_data.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 mpc85xx_serial_init(void)
-{
- volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
- volatile ccsr_cpm_scc_t *sp;
- volatile scc_uart_t *up;
- volatile cbd_t *tbdf, *rbdf;
- volatile ccsr_cpm_cp_t *cp = &(cpm->im_cpm_cp);
- uint dpaddr;
-
- /* initialize pointers to SCC */
-
- sp = (ccsr_cpm_scc_t *) &(cpm->im_cpm_scc[SCC_INDEX]);
- up = (scc_uart_t *)&(cpm->im_dprambase[PROFF_SCC]);
-
- /* Disable transmitter/receiver.
- */
- sp->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).
- */
- cpm->im_cpm_mux.cmxscr = \
- (cpm->im_cpm_mux.cmxscr&~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 = m8560_cpm_dpalloc((2 * sizeof (cbd_t)) + 2, 16);
-
- /* Set the physical address of the host memory buffers in
- * the buffer descriptors.
- */
- rbdf = (cbd_t *)&(cpm->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->sccm = 0;
- sp->scce = 0xffff;
-
- /* Set 8 bit FIFO, 16 bit oversampling and UART mode.
- */
- sp->gsmrh = SCC_GSMRH_RFW; /* 8 bit FIFO */
- sp->gsmrl = \
- SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16 | SCC_GSMRL_MODE_UART;
-
- /* Set CTS no flow control, 1 stop bit, 8 bit character length,
- * normal async UART mode, no parity
- */
- sp->psmr = SCU_PSMR_CL;
-
- /* execute the "Init Rx and Tx params" CP command.
- */
-
- while (cp->cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
-
- cp->cpcr = mk_cr_cmd(CPM_CR_SCC_PAGE, CPM_CR_SCC_SBLOCK,
- 0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
-
- while (cp->cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
-
- /* Enable transmitter/receiver.
- */
- sp->gsmrl |= SCC_GSMRL_ENR | SCC_GSMRL_ENT;
-
- return (0);
-}
-
-static void mpc85xx_serial_setbrg(void)
-{
-#if defined(CONFIG_CONS_USE_EXTC)
- m8560_cpm_extcbrg(SCC_INDEX, gd->baudrate,
- CONFIG_CONS_EXTC_RATE, CONFIG_CONS_EXTC_PINSEL);
-#else
- m8560_cpm_setbrg(SCC_INDEX, gd->baudrate);
-#endif
-}
-
-static void mpc85xx_serial_putc(const char c)
-{
- volatile scc_uart_t *up;
- volatile cbd_t *tbdf;
- volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
-
- if (c == '\n')
- serial_putc ('\r');
-
- up = (scc_uart_t *)&(cpm->im_dprambase[PROFF_SCC]);
- tbdf = (cbd_t *)&(cpm->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 mpc85xx_serial_getc(void)
-{
- volatile cbd_t *rbdf;
- volatile scc_uart_t *up;
- volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
- unsigned char c;
-
- up = (scc_uart_t *)&(cpm->im_dprambase[PROFF_SCC]);
- rbdf = (cbd_t *)&(cpm->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 mpc85xx_serial_tstc(void)
-{
- volatile cbd_t *rbdf;
- volatile scc_uart_t *up;
- volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
-
- up = (scc_uart_t *)&(cpm->im_dprambase[PROFF_SCC]);
- rbdf = (cbd_t *)&(cpm->im_dprambase[up->scc_genscc.scc_rbase]);
-
- return ((rbdf->cbd_sc & BD_SC_EMPTY) == 0);
-}
-
-static struct serial_device mpc85xx_serial_drv = {
- .name = "mpc85xx_serial",
- .start = mpc85xx_serial_init,
- .stop = NULL,
- .setbrg = mpc85xx_serial_setbrg,
- .putc = mpc85xx_serial_putc,
- .puts = default_serial_puts,
- .getc = mpc85xx_serial_getc,
- .tstc = mpc85xx_serial_tstc,
-};
-
-void mpc85xx_serial_initialize(void)
-{
- serial_register(&mpc85xx_serial_drv);
-}
-
-__weak struct serial_device *default_serial_console(void)
-{
- return &mpc85xx_serial_drv;
-}
-#endif /* CONFIG_CONS_ON_SCC */
generated by cgit v1.1 at 2024-07-15 05:34:36 +0000