diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc5xxx/serial.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc5xxx/serial.c | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/arch/powerpc/cpu/mpc5xxx/serial.c b/arch/powerpc/cpu/mpc5xxx/serial.c deleted file mode 100644 index bccdcf7..0000000 --- a/arch/powerpc/cpu/mpc5xxx/serial.c +++ /dev/null @@ -1,265 +0,0 @@ -/* - * (C) Copyright 2000 - 2003 - * 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, with - * changes based on the file arch/powerpc/mbxboot/m8260_tty.c from the - * Linux/PPC sources (m8260_tty.c had no copyright info in it). - * - * Martin Krause, 8 Jun 2006 - * Added SERIAL_MULTI support - */ - -/* - * Minimal serial functions needed to use one of the PSC ports - * as serial console interface. - */ - -#include <common.h> -#include <linux/compiler.h> -#include <mpc5xxx.h> -#include <serial.h> - -DECLARE_GLOBAL_DATA_PTR; - -#if defined(CONFIG_PSC_CONSOLE) - -#if CONFIG_PSC_CONSOLE == 1 -#define PSC_BASE MPC5XXX_PSC1 -#elif CONFIG_PSC_CONSOLE == 2 -#define PSC_BASE MPC5XXX_PSC2 -#elif CONFIG_PSC_CONSOLE == 3 -#define PSC_BASE MPC5XXX_PSC3 -#elif CONFIG_PSC_CONSOLE == 4 -#define PSC_BASE MPC5XXX_PSC4 -#elif CONFIG_PSC_CONSOLE == 5 -#define PSC_BASE MPC5XXX_PSC5 -#elif CONFIG_PSC_CONSOLE == 6 -#define PSC_BASE MPC5XXX_PSC6 -#else -#error CONFIG_PSC_CONSOLE must be in 1 ... 6 -#endif - -#if defined(CONFIG_PSC_CONSOLE2) - -#if CONFIG_PSC_CONSOLE2 == 1 -#define PSC_BASE2 MPC5XXX_PSC1 -#elif CONFIG_PSC_CONSOLE2 == 2 -#define PSC_BASE2 MPC5XXX_PSC2 -#elif CONFIG_PSC_CONSOLE2 == 3 -#define PSC_BASE2 MPC5XXX_PSC3 -#elif CONFIG_PSC_CONSOLE2 == 4 -#define PSC_BASE2 MPC5XXX_PSC4 -#elif CONFIG_PSC_CONSOLE2 == 5 -#define PSC_BASE2 MPC5XXX_PSC5 -#elif CONFIG_PSC_CONSOLE2 == 6 -#define PSC_BASE2 MPC5XXX_PSC6 -#else -#error CONFIG_PSC_CONSOLE2 must be in 1 ... 6 -#endif - -#endif - -int serial_init_dev (unsigned long dev_base) -{ - volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; - unsigned long baseclk; - int div; - - /* reset PSC */ - psc->command = PSC_SEL_MODE_REG_1; - - /* select clock sources */ - psc->psc_clock_select = 0; - baseclk = (gd->arch.ipb_clk + 16) / 32; - - /* switch to UART mode */ - psc->sicr = 0; - - /* configure parity, bit length and so on */ - psc->mode = PSC_MODE_8_BITS | PSC_MODE_PARNONE; - psc->mode = PSC_MODE_ONE_STOP; - - /* set up UART divisor */ - div = (baseclk + (gd->baudrate/2)) / gd->baudrate; - psc->ctur = (div >> 8) & 0xff; - psc->ctlr = div & 0xff; - - /* disable all interrupts */ - psc->psc_imr = 0; - - /* reset and enable Rx/Tx */ - psc->command = PSC_RST_RX; - psc->command = PSC_RST_TX; - psc->command = PSC_RX_ENABLE | PSC_TX_ENABLE; - - return (0); -} - -void serial_putc_dev (unsigned long dev_base, const char c) -{ - volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; - - if (c == '\n') - serial_putc_dev (dev_base, '\r'); - - /* Wait for last character to go. */ - while (!(psc->psc_status & PSC_SR_TXEMP)) - ; - - psc->psc_buffer_8 = c; -} - -void serial_puts_dev (unsigned long dev_base, const char *s) -{ - while (*s) { - serial_putc_dev (dev_base, *s++); - } -} - -int serial_getc_dev (unsigned long dev_base) -{ - volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; - - /* Wait for a character to arrive. */ - while (!(psc->psc_status & PSC_SR_RXRDY)) - ; - - return psc->psc_buffer_8; -} - -int serial_tstc_dev (unsigned long dev_base) -{ - volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; - - return (psc->psc_status & PSC_SR_RXRDY); -} - -void serial_setbrg_dev (unsigned long dev_base) -{ - volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; - unsigned long baseclk, div; - - baseclk = (gd->arch.ipb_clk + 16) / 32; - - /* set up UART divisor */ - div = (baseclk + (gd->baudrate/2)) / gd->baudrate; - psc->ctur = (div >> 8) & 0xFF; - psc->ctlr = div & 0xff; -} - -void serial_setrts_dev (unsigned long dev_base, int s) -{ - volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; - - if (s) { - /* Assert RTS (become LOW) */ - psc->op1 = 0x1; - } - else { - /* Negate RTS (become HIGH) */ - psc->op0 = 0x1; - } -} - -int serial_getcts_dev (unsigned long dev_base) -{ - volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base; - - return (psc->ip & 0x1) ? 0 : 1; -} - -int serial0_init(void) -{ - return (serial_init_dev(PSC_BASE)); -} - -void serial0_setbrg (void) -{ - serial_setbrg_dev(PSC_BASE); -} - -void serial0_putc(const char c) -{ - serial_putc_dev(PSC_BASE,c); -} - -void serial0_puts(const char *s) -{ - serial_puts_dev(PSC_BASE, s); -} - -int serial0_getc(void) -{ - return(serial_getc_dev(PSC_BASE)); -} - -int serial0_tstc(void) -{ - return (serial_tstc_dev(PSC_BASE)); -} - -struct serial_device serial0_device = -{ - .name = "serial0", - .start = serial0_init, - .stop = NULL, - .setbrg = serial0_setbrg, - .getc = serial0_getc, - .tstc = serial0_tstc, - .putc = serial0_putc, - .puts = serial0_puts, -}; - -__weak struct serial_device *default_serial_console(void) -{ - return &serial0_device; -} - -#ifdef CONFIG_PSC_CONSOLE2 -int serial1_init(void) -{ - return serial_init_dev(PSC_BASE2); -} - -void serial1_setbrg(void) -{ - serial_setbrg_dev(PSC_BASE2); -} - -void serial1_putc(const char c) -{ - serial_putc_dev(PSC_BASE2, c); -} - -void serial1_puts(const char *s) -{ - serial_puts_dev(PSC_BASE2, s); -} - -int serial1_getc(void) -{ - return serial_getc_dev(PSC_BASE2); -} - -int serial1_tstc(void) -{ - return serial_tstc_dev(PSC_BASE2); -} - -struct serial_device serial1_device = -{ - .name = "serial1", - .start = serial1_init, - .stop = NULL, - .setbrg = serial1_setbrg, - .getc = serial1_getc, - .tstc = serial1_tstc, - .putc = serial1_putc, - .puts = serial1_puts, -}; -#endif /* CONFIG_PSC_CONSOLE2 */ - -#endif /* CONFIG_PSC_CONSOLE */ |