diff options
Diffstat (limited to 'arch/cris/arch-v32/kernel/debugport.c')
| -rw-r--r-- | arch/cris/arch-v32/kernel/debugport.c | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/arch/cris/arch-v32/kernel/debugport.c b/arch/cris/arch-v32/kernel/debugport.c deleted file mode 100644 index 69247fd2090a..000000000000 --- a/arch/cris/arch-v32/kernel/debugport.c +++ /dev/null @@ -1,232 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2003, Axis Communications AB. - */ - -#include <linux/console.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/string.h> -#include <hwregs/reg_rdwr.h> -#include <hwregs/reg_map.h> -#include <hwregs/ser_defs.h> -#include <hwregs/dma_defs.h> -#include <mach/pinmux.h> - -struct dbg_port -{ - unsigned char nbr; - unsigned long instance; - unsigned int started; - unsigned long baudrate; - unsigned char parity; - unsigned int bits; -}; - -struct dbg_port ports[] = -{ - { - 0, - regi_ser0, - 0, - 115200, - 'N', - 8 - }, - { - 1, - regi_ser1, - 0, - 115200, - 'N', - 8 - }, - { - 2, - regi_ser2, - 0, - 115200, - 'N', - 8 - }, - { - 3, - regi_ser3, - 0, - 115200, - 'N', - 8 - }, -#if CONFIG_ETRAX_SERIAL_PORTS == 5 - { - 4, - regi_ser4, - 0, - 115200, - 'N', - 8 - }, -#endif -}; - -static struct dbg_port *port = -#if defined(CONFIG_ETRAX_DEBUG_PORT0) - &ports[0]; -#elif defined(CONFIG_ETRAX_DEBUG_PORT1) - &ports[1]; -#elif defined(CONFIG_ETRAX_DEBUG_PORT2) - &ports[2]; -#elif defined(CONFIG_ETRAX_DEBUG_PORT3) - &ports[3]; -#else - NULL; -#endif - -#ifdef CONFIG_ETRAX_KGDB -static struct dbg_port *kgdb_port = -#if defined(CONFIG_ETRAX_KGDB_PORT0) - &ports[0]; -#elif defined(CONFIG_ETRAX_KGDB_PORT1) - &ports[1]; -#elif defined(CONFIG_ETRAX_KGDB_PORT2) - &ports[2]; -#elif defined(CONFIG_ETRAX_KGDB_PORT3) - &ports[3]; -#elif defined(CONFIG_ETRAX_KGDB_PORT4) - &ports[4]; -#else - NULL; -#endif -#endif - -static void start_port(struct dbg_port *p) -{ - /* Set up serial port registers */ - reg_ser_rw_tr_ctrl tr_ctrl = {0}; - reg_ser_rw_tr_dma_en tr_dma_en = {0}; - - reg_ser_rw_rec_ctrl rec_ctrl = {0}; - reg_ser_rw_tr_baud_div tr_baud_div = {0}; - reg_ser_rw_rec_baud_div rec_baud_div = {0}; - - if (!p || p->started) - return; - - p->started = 1; - - if (p->nbr == 1) - crisv32_pinmux_alloc_fixed(pinmux_ser1); - else if (p->nbr == 2) - crisv32_pinmux_alloc_fixed(pinmux_ser2); - else if (p->nbr == 3) - crisv32_pinmux_alloc_fixed(pinmux_ser3); -#if CONFIG_ETRAX_SERIAL_PORTS == 5 - else if (p->nbr == 4) - crisv32_pinmux_alloc_fixed(pinmux_ser4); -#endif - - tr_ctrl.base_freq = rec_ctrl.base_freq = regk_ser_f29_493; - tr_dma_en.en = rec_ctrl.dma_mode = regk_ser_no; - tr_baud_div.div = rec_baud_div.div = 29493000 / p->baudrate / 8; - tr_ctrl.en = rec_ctrl.en = 1; - - if (p->parity == 'O') { - tr_ctrl.par_en = regk_ser_yes; - tr_ctrl.par = regk_ser_odd; - rec_ctrl.par_en = regk_ser_yes; - rec_ctrl.par = regk_ser_odd; - } else if (p->parity == 'E') { - tr_ctrl.par_en = regk_ser_yes; - tr_ctrl.par = regk_ser_even; - rec_ctrl.par_en = regk_ser_yes; - rec_ctrl.par = regk_ser_odd; - } - - if (p->bits == 7) { - tr_ctrl.data_bits = regk_ser_bits7; - rec_ctrl.data_bits = regk_ser_bits7; - } - - REG_WR (ser, p->instance, rw_tr_baud_div, tr_baud_div); - REG_WR (ser, p->instance, rw_rec_baud_div, rec_baud_div); - REG_WR (ser, p->instance, rw_tr_dma_en, tr_dma_en); - REG_WR (ser, p->instance, rw_tr_ctrl, tr_ctrl); - REG_WR (ser, p->instance, rw_rec_ctrl, rec_ctrl); -} - -#ifdef CONFIG_ETRAX_KGDB -/* Use polling to get a single character from the kernel debug port */ -int getDebugChar(void) -{ - reg_ser_rs_stat_din stat; - reg_ser_rw_ack_intr ack_intr = { 0 }; - - do { - stat = REG_RD(ser, kgdb_port->instance, rs_stat_din); - } while (!stat.dav); - - /* Ack the data_avail interrupt. */ - ack_intr.dav = 1; - REG_WR(ser, kgdb_port->instance, rw_ack_intr, ack_intr); - - return stat.data; -} - -/* Use polling to put a single character to the kernel debug port */ -void putDebugChar(int val) -{ - reg_ser_r_stat_din stat; - do { - stat = REG_RD(ser, kgdb_port->instance, r_stat_din); - } while (!stat.tr_rdy); - REG_WR_INT(ser, kgdb_port->instance, rw_dout, val); -} -#endif /* CONFIG_ETRAX_KGDB */ - -static void __init early_putch(int c) -{ - reg_ser_r_stat_din stat; - /* Wait until transmitter is ready and send. */ - do - stat = REG_RD(ser, port->instance, r_stat_din); - while (!stat.tr_rdy); - REG_WR_INT(ser, port->instance, rw_dout, c); -} - -static void __init -early_console_write(struct console *con, const char *s, unsigned n) -{ - extern void reset_watchdog(void); - int i; - - /* Send data. */ - for (i = 0; i < n; i++) { - /* TODO: the '\n' -> '\n\r' translation should be done at the - receiver. Remove it when the serial driver removes it. */ - if (s[i] == '\n') - early_putch('\r'); - early_putch(s[i]); - reset_watchdog(); - } -} - -static struct console early_console_dev __initdata = { - .name = "early", - .write = early_console_write, - .flags = CON_PRINTBUFFER | CON_BOOT, - .index = -1 -}; - -/* Register console for printk's, etc. */ -int __init init_etrax_debug(void) -{ - start_port(port); - - /* Register an early console if a debug port was chosen. */ - register_console(&early_console_dev); - -#ifdef CONFIG_ETRAX_KGDB - start_port(kgdb_port); -#endif /* CONFIG_ETRAX_KGDB */ - return 0; -} |