1 files changed, 0 insertions, 214 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4/console/usart.c b/c/src/lib/libbsp/arm/stm32f4/console/usart.c
deleted file mode 100644
index 24e010d6bf..0000000000
--- a/c/src/lib/libbsp/arm/stm32f4/console/usart.c
+++ /dev/null
@@ -1,214 +0,0 @@
-/*
- * Copyright (c) 2012 Sebastian Huber.  All rights reserved.
- *
- *  embedded brains GmbH
- *  Obere Lagerstr. 30
- *  82178 Puchheim
- *  Germany
- *  <rtems@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 <libchip/sersupp.h>
-
-#include <bsp.h>
-#include <bsp/io.h>
-#include <bsp/rcc.h>
-#include <bsp/irq.h>
-#include <bsp/usart.h>
-#include <bsp/stm32f4.h>
-
-static volatile stm32f4_usart *usart_get_regs(const console_tbl *ct)
-{
-  return (stm32f4_usart *) ct->ulCtrlPort1;
-}
-
-#if 0
-static rtems_vector_number usart_get_irq_number(const console_tbl *ct)
-{
-  return ct->ulIntVector;
-}
-#endif
-
-static const stm32f4_rcc_index usart_rcc_index [] = {
-  STM32F4_RCC_USART1,
-  STM32F4_RCC_USART2,
-  STM32F4_RCC_USART3,
-  STM32F4_RCC_UART4,
-  STM32F4_RCC_UART5,
-#ifdef STM32F4_FAMILY_F4XXXX
-  STM32F4_RCC_USART6
-#endif /* STM32F4_FAMILY_F4XXXX */
-};
-
-static stm32f4_rcc_index usart_get_rcc_index(const console_tbl *ct)
-{
-  return usart_rcc_index [ct->ulCtrlPort2];
-}
-
-static const uint8_t usart_pclk_index [] = { 1, 0, 0, 0, 0, 1 };
-
-static const uint32_t usart_pclk_by_index [] = {
-  STM32F4_PCLK1,
-  STM32F4_PCLK2
-};
-
-static uint32_t usart_get_pclk(const console_tbl *ct)
-{
-  return usart_pclk_by_index [usart_pclk_index [ct->ulCtrlPort2]];
-}
-
-static uint32_t usart_get_baud(const console_tbl *ct)
-{
-  return ct->ulClock;
-}
-
-/*
- * a = 8 * (2 - CR1[OVER8])
- *
- * usartdiv = div_mantissa + div_fraction / a
- *
- * baud = pclk / (a * usartdiv)
- *
- * usartdiv = pclk / (a * baud)
- *
- * Calculation in integer arithmetic:
- *
- * 1. div_mantissa = pclk / (a * baud)
- *
- * 2. div_fraction = pclk / (baud - a * div_mantissa)
- */
-static uint32_t usart_get_bbr(
-  volatile stm32f4_usart *usart,
-  uint32_t pclk,
-  uint32_t baud
-)
-{
-  uint32_t a = 8 * (2 - ((usart->cr1 & STM32F4_USART_CR1_OVER8) != 0));
-  uint32_t div_mantissa_low = pclk / (a * baud);
-  uint32_t div_fraction_low = pclk / (baud - a * div_mantissa_low);
-  uint32_t div_mantissa_high;
-  uint32_t div_fraction_high;
-  uint32_t high_err;
-  uint32_t low_err;
-  uint32_t div_mantissa;
-  uint32_t div_fraction;
-
-  if (div_fraction_low < a - 1) {
-    div_mantissa_high = div_fraction_low;
-    div_fraction_high = div_fraction_low + 1;
-  } else {
-    div_mantissa_high = div_fraction_low + 1;
-    div_fraction_high = 0;
-  }
-
-  high_err = pclk - baud * (a * div_mantissa_high + div_fraction_high);
-  low_err = baud * (a * div_mantissa_low + div_fraction_low) - pclk;
-
-  if (low_err < high_err) {
-    div_mantissa = div_mantissa_low;
-    div_fraction = div_fraction_low;
-  } else {
-    div_mantissa = div_mantissa_high;
-    div_fraction = div_fraction_high;
-  }
-
-  return STM32F4_USART_BBR_DIV_MANTISSA(div_mantissa)
-    | STM32F4_USART_BBR_DIV_FRACTION(div_fraction);
-}
-
-static void usart_initialize(int minor)
-{
-  const console_tbl *ct = Console_Port_Tbl [minor];
-  volatile stm32f4_usart *usart = usart_get_regs(ct);
-  uint32_t pclk = usart_get_pclk(ct);
-  uint32_t baud = usart_get_baud(ct);
-  stm32f4_rcc_index rcc_index = usart_get_rcc_index(ct);
-
-  stm32f4_rcc_set_clock(rcc_index, true);
-
-  usart->cr1 = 0;
-  usart->cr2 = 0;
-  usart->cr3 = 0;
-  usart->bbr = usart_get_bbr(usart, pclk, baud);
-  usart->cr1 = STM32F4_USART_CR1_UE
-    | STM32F4_USART_CR1_TE
-    | STM32F4_USART_CR1_RE;
-}
-
-static int usart_first_open(int major, int minor, void *arg)
-{
-  rtems_libio_open_close_args_t *oc = (rtems_libio_open_close_args_t *) arg;
-  struct rtems_termios_tty *tty = (struct rtems_termios_tty *) oc->iop->data1;
-  const console_tbl *ct = Console_Port_Tbl [minor];
-  console_data *cd = &Console_Port_Data [minor];
-
-  cd->termios_data = tty;
-  rtems_termios_set_initial_baud(tty, ct->ulClock);
-
-  return 0;
-}
-
-static int usart_last_close(int major, int minor, void *arg)
-{
-  return 0;
-}
-
-static int usart_read_polled(int minor)
-{
-  const console_tbl *ct = Console_Port_Tbl [minor];
-  volatile stm32f4_usart *usart = usart_get_regs(ct);
-
-  if ((usart->sr & STM32F4_USART_SR_RXNE) != 0) {
-    return STM32F4_USART_DR_GET(usart->dr);
-  } else {
-    return -1;
-  }
-}
-
-static void usart_write_polled(int minor, char c)
-{
-  const console_tbl *ct = Console_Port_Tbl [minor];
-  volatile stm32f4_usart *usart = usart_get_regs(ct);
-
-  while ((usart->sr & STM32F4_USART_SR_TXE) == 0) {
-    /* Wait */
-  }
-
-  usart->dr = STM32F4_USART_DR(c);
-}
-
-static ssize_t usart_write_support_polled(
-  int minor,
-  const char *s,
-  size_t n
-)
-{
-  ssize_t i = 0;
-
-  for (i = 0; i < n; ++i) {
-    usart_write_polled(minor, s [i]);
-  }
-
-  return n;
-}
-
-static int usart_set_attributes(int minor, const struct termios *term)
-{
-  return -1;
-}
-
-const console_fns stm32f4_usart_fns = {
-  .deviceProbe = libchip_serial_default_probe,
-  .deviceFirstOpen = usart_first_open,
-  .deviceLastClose = usart_last_close,
-  .deviceRead = usart_read_polled,
-  .deviceWrite = usart_write_support_polled,
-  .deviceInitialize = usart_initialize,
-  .deviceWritePolled = usart_write_polled,
-  .deviceSetAttributes = usart_set_attributes,
-  .deviceOutputUsesInterrupts = false
-};