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Diffstat (limited to 'c/src/lib/libbsp/arm/imx/console/console-config.c')
-rw-r--r--c/src/lib/libbsp/arm/imx/console/console-config.c382
1 files changed, 0 insertions, 382 deletions
diff --git a/c/src/lib/libbsp/arm/imx/console/console-config.c b/c/src/lib/libbsp/arm/imx/console/console-config.c
deleted file mode 100644
index 0731446f08..0000000000
--- a/c/src/lib/libbsp/arm/imx/console/console-config.c
+++ /dev/null
@@ -1,382 +0,0 @@
-/*
- * Copyright (c) 2017 embedded brains GmbH. All rights reserved.
- *
- * embedded brains GmbH
- * Dornierstr. 4
- * 82178 Puchheim
- * Germany
- * <info@embedded-brains.de>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#include <sys/param.h>
-
-#include <rtems/bspIo.h>
-#include <rtems/console.h>
-#include <rtems/sysinit.h>
-#include <rtems/termiostypes.h>
-
-#include <bsp.h>
-#include <bsp/fdt.h>
-#include <bsp/irq.h>
-
-#include <arm/freescale/imx/imx_ccmvar.h>
-#include <arm/freescale/imx/imx_uartreg.h>
-
-#include <libfdt.h>
-
-#define IMX_UART_TX_FIFO_LEVEL 16
-
-typedef struct {
- rtems_termios_device_context base;
- volatile imx_uart *regs;
-#ifdef CONSOLE_USE_INTERRUPTS
- rtems_vector_number irq;
- int tx_in_progress;
-#endif
-} imx_uart_context;
-
-static imx_uart_context imx_uart_instances[7];
-
-static imx_uart_context *imx_uart_console = &imx_uart_instances[0];
-
-static volatile imx_uart *imx_uart_get_regs(rtems_termios_device_context *base)
-{
- imx_uart_context *ctx;
-
- ctx = (imx_uart_context *) base;
- return ctx->regs;
-}
-
-static void imx_uart_write_polled(rtems_termios_device_context *base, char c)
-{
- volatile imx_uart *regs;
-
- regs = imx_uart_get_regs(base);
-
- while ((regs->usr1 & IMX_UART_USR1_TRDY) == 0) {
- /* Wait */
- }
-
- regs->utxd = IMX_UART_UTXD_TX_DATA(c);
-}
-
-void imx_uart_console_drain(void)
-{
- volatile imx_uart *regs;
-
- regs = imx_uart_get_regs(&imx_uart_console->base);
-
- if (regs != NULL) {
- while ((regs->usr2 & IMX_UART_USR2_TXFE) == 0) {
- /* Wait */
- }
- }
-}
-
-static void imx_output_char(char c)
-{
- imx_uart_write_polled(&imx_uart_console->base, c);
-}
-
-static void imx_uart_init_context(
- imx_uart_context *ctx,
- const char *fdt,
- const char *serial
-)
-{
- int node;
-
- rtems_termios_device_context_initialize(&ctx->base, "UART");
- node = fdt_path_offset(fdt, serial);
- ctx->regs = imx_get_reg_of_node(fdt, node);
-#ifdef CONSOLE_USE_INTERRUPTS
- ctx->irq = imx_get_irq_of_node(fdt, node, 0);
-#endif
-}
-
-static void imx_uart_probe(void)
-{
- const void *fdt;
- int node;
- int offset;
- const char *console;
- size_t i;
-
- fdt = bsp_fdt_get();
- node = fdt_path_offset(fdt, "/chosen");
-
- console = fdt_getprop(fdt, node, "stdout-path", NULL);
- if (console == NULL) {
- console = "";
- }
-
- node = fdt_path_offset(fdt, "/aliases");
- offset = fdt_first_property_offset(fdt, node);
- i = 0;
-
- while (offset >= 0 && i < RTEMS_ARRAY_SIZE(imx_uart_instances)) {
- const struct fdt_property *prop;
-
- prop = fdt_get_property_by_offset(fdt, offset, NULL);
-
- if (prop != NULL) {
- const char *name;
-
- name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
- if (strstr(name, "serial") != NULL) {
- imx_uart_context *ctx;
- const char *serial;
-
- ctx = &imx_uart_instances[i];
- serial = prop->data;
-
- if (strcmp(serial, console) == 0) {
- imx_uart_console = ctx;
- }
-
- imx_uart_init_context(ctx, fdt, serial);
- ++i;
- }
- }
-
- offset = fdt_next_property_offset(fdt, offset);
- }
-
- BSP_output_char = imx_output_char;
-}
-
-static void imx_output_char_init(char c)
-{
- imx_uart_probe();
- imx_output_char(c);
-}
-
-BSP_output_char_function_type BSP_output_char = imx_output_char_init;
-
-BSP_polling_getchar_function_type BSP_poll_char = NULL;
-
-#ifdef CONSOLE_USE_INTERRUPTS
-static void imx_uart_interrupt(void *arg)
-{
- rtems_termios_tty *tty;
- imx_uart_context *ctx;
- volatile imx_uart *regs;
- uint32_t usr2;
-
- tty = arg;
- ctx = rtems_termios_get_device_context(tty);
- regs = ctx->regs;
- usr2 = regs->usr2;
-
- regs->usr1 = IMX_UART_USR1_AGTIM;
-
- while ((usr2 & IMX_UART_USR2_RDR) != 0) {
- char c;
-
- c = IMX_UART_URXD_RX_DATA_GET(regs->urxd);
- rtems_termios_enqueue_raw_characters(tty, &c, 1);
- usr2 = regs->usr2;
- }
-
- if (ctx->tx_in_progress > 0 && (regs->usr1 & IMX_UART_USR1_TRDY) != 0) {
- rtems_termios_dequeue_characters(tty, ctx->tx_in_progress);
- }
-}
-#endif
-
-static bool imx_uart_set_attributes(
- rtems_termios_device_context *base,
- const struct termios *term
-)
-{
- imx_uart_context *ctx;
- volatile imx_uart *regs;
- uint32_t ufcr;
- uint32_t baud;
-
- ctx = (imx_uart_context *) base;
- regs = imx_uart_get_regs(&ctx->base);
-
- baud = rtems_termios_baud_to_number(term->c_ospeed);
-
- if (baud != 0) {
- ufcr = regs->ufcr;
- ufcr = IMX_UART_UFCR_RFDIV_SET(ufcr, 0x5);
- regs->ufcr = ufcr;
- regs->ubir = 15;
- regs->ubmr = imx_ccm_uart_hz() / baud - 1;
- }
-
- return true;
-}
-
-static bool imx_uart_first_open(
- rtems_termios_tty *tty,
- rtems_termios_device_context *base,
- struct termios *term,
- rtems_libio_open_close_args_t *args
-)
-{
- imx_uart_context *ctx;
- volatile imx_uart *regs;
-#ifdef CONSOLE_USE_INTERRUPTS
- rtems_status_code sc;
- uint32_t ufcr;
-#endif
-
- ctx = (imx_uart_context *) base;
- regs = imx_uart_get_regs(&ctx->base);
-
- regs->ucr1 = IMX_UART_UCR1_UARTEN;
- regs->ucr2 = IMX_UART_UCR2_IRTS | IMX_UART_UCR2_WS | IMX_UART_UCR2_RXEN
- | IMX_UART_UCR2_TXEN | IMX_UART_UCR2_SRST;
-
- rtems_termios_set_initial_baud(tty, 115200);
- imx_uart_set_attributes(base, term);
-
-#ifdef CONSOLE_USE_INTERRUPTS
- ufcr = regs->ufcr;
- ufcr = IMX_UART_UFCR_RXTL_SET(ufcr, 16);
- ufcr = IMX_UART_UFCR_TXTL_SET(ufcr, IMX_UART_TX_FIFO_LEVEL);
- regs->ufcr = ufcr;
- regs->ucr1 |= IMX_UART_UCR1_RRDYEN;
- regs->ucr2 |= IMX_UART_UCR2_ATEN;
- sc = rtems_interrupt_handler_install(
- ctx->irq,
- "UART",
- RTEMS_INTERRUPT_SHARED,
- imx_uart_interrupt,
- tty
- );
- if (sc != RTEMS_SUCCESSFUL) {
- return false;
- }
-#endif
-
- return true;
-}
-
-static void imx_uart_last_close(
- rtems_termios_tty *tty,
- rtems_termios_device_context *base,
- rtems_libio_open_close_args_t *args
-)
-{
-#ifdef CONSOLE_USE_INTERRUPTS
- imx_uart_context *ctx;
-
- ctx = (imx_uart_context *) base;
- rtems_interrupt_handler_remove(ctx->irq, imx_uart_interrupt, tty);
-#endif
-}
-
-static void imx_uart_write(
- rtems_termios_device_context *base,
- const char *buf,
- size_t len
-)
-{
-#ifdef CONSOLE_USE_INTERRUPTS
- imx_uart_context *ctx;
- volatile imx_uart *regs;
- int n;
- uint32_t ucr1;
-
- ctx = (imx_uart_context *) base;
- regs = imx_uart_get_regs(&ctx->base);
- ucr1 = regs->ucr1;
-
- if (len > 0) {
- int i;
-
- n = (int) MIN(len, IMX_UART_TX_FIFO_LEVEL);
- ucr1 |= IMX_UART_UCR1_TRDYEN;
-
- for (i = 0; i < n; ++i) {
- regs->utxd = IMX_UART_UTXD_TX_DATA(buf[i]);
- }
- } else {
- n = 0;
- ucr1 &= ~IMX_UART_UCR1_TRDYEN;
- }
-
- regs->ucr1 = ucr1;
- ctx->tx_in_progress = n;
-#else
- size_t i;
-
- for (i = 0; i < len; ++i) {
- imx_uart_write_polled(base, buf[i]);
- }
-#endif
-}
-
-#ifndef CONSOLE_USE_INTERRUPTS
-static int imx_uart_read(rtems_termios_device_context *base)
-{
- volatile imx_uart *regs;
-
- regs = imx_uart_get_regs(base);
-
- if ((regs->usr2 & IMX_UART_USR2_RDR) != 0) {
- return IMX_UART_URXD_RX_DATA_GET(regs->urxd);
- } else {
- return -1;
- }
-}
-#endif
-
-static const rtems_termios_device_handler imx_uart_handler = {
- .first_open = imx_uart_first_open,
- .last_close = imx_uart_last_close,
- .write = imx_uart_write,
- .set_attributes = imx_uart_set_attributes,
-#ifdef CONSOLE_USE_INTERRUPTS
- .mode = TERMIOS_IRQ_DRIVEN
-#else
- .poll_read = imx_uart_read,
- .mode = TERMIOS_POLLED
-#endif
-};
-
-rtems_status_code console_initialize(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void *arg
-)
-{
- char path[] = "/dev/ttyS?";
- size_t i;
-
- rtems_termios_initialize();
-
- for (i = 0; i < RTEMS_ARRAY_SIZE(imx_uart_instances); ++i) {
- imx_uart_context *ctx;
-
- ctx = &imx_uart_instances[i];
- path[sizeof(path) - 2] = (char) ('0' + i);
-
- rtems_termios_device_install(
- path,
- &imx_uart_handler,
- NULL,
- &ctx->base
- );
-
- if (ctx == imx_uart_console) {
- link(path, CONSOLE_DEVICE_NAME);
- }
- }
-
- return RTEMS_SUCCESSFUL;
-}
-
-RTEMS_SYSINIT_ITEM(
- imx_uart_probe,
- RTEMS_SYSINIT_BSP_START,
- RTEMS_SYSINIT_ORDER_LAST
-);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-04 01:05:44 +0000