1 files changed, 0 insertions, 153 deletions

diff --git a/qemu/roms/ipxe/src/core/uart.c b/qemu/roms/ipxe/src/core/uart.c
deleted file mode 100644
index b85fe0767..000000000
--- a/qemu/roms/ipxe/src/core/uart.c
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
-/** @file
- *
- * 16550-compatible UART
- *
- */
-
-#include <unistd.h>
-#include <errno.h>
-#include <ipxe/uart.h>
-
-/** Timeout for transmit holding register to become empty */
-#define UART_THRE_TIMEOUT_MS 100
-
-/** Timeout for transmitter to become empty */
-#define UART_TEMT_TIMEOUT_MS 1000
-
-/**
- * Transmit data
- *
- * @v uart		UART
- * @v data		Data
- */
-void uart_transmit ( struct uart *uart, uint8_t data ) {
-	unsigned int i;
-	uint8_t lsr;
-
-	/* Wait for transmitter holding register to become empty */
-	for ( i = 0 ; i < UART_THRE_TIMEOUT_MS ; i++ ) {
-		lsr = uart_read ( uart, UART_LSR );
-		if ( lsr & UART_LSR_THRE )
-			break;
-		mdelay ( 1 );
-	}
-
-	/* Transmit data (even if we timed out) */
-	uart_write ( uart, UART_THR, data );
-}
-
-/**
- * Flush data
- *
- * @v uart		UART
- */
-void uart_flush ( struct uart *uart ) {
-	unsigned int i;
-	uint8_t lsr;
-
-	/* Wait for transmitter and receiver to become empty */
-	for ( i = 0 ; i < UART_TEMT_TIMEOUT_MS ; i++ ) {
-		uart_read ( uart, UART_RBR );
-		lsr = uart_read ( uart, UART_LSR );
-		if ( ( lsr & UART_LSR_TEMT ) && ! ( lsr & UART_LSR_DR ) )
-			break;
-	}
-}
-
-/**
- * Check for existence of UART
- *
- * @v uart		UART
- * @ret rc		Return status code
- */
-int uart_exists ( struct uart *uart ) {
-
-	/* Fail if no UART port is defined */
-	if ( ! uart->base )
-		return -ENODEV;
-
-	/* Fail if UART scratch register seems not to be present */
-	uart_write ( uart, UART_SCR, 0x18 );
-	if ( uart_read ( uart, UART_SCR ) != 0x18 )
-		return -ENODEV;
-	uart_write ( uart, UART_SCR, 0xae );
-	if ( uart_read ( uart, UART_SCR ) != 0xae )
-		return -ENODEV;
-
-	return 0;
-}
-
-/**
- * Initialise UART
- *
- * @v uart		UART
- * @v baud		Baud rate, or zero to leave unchanged
- * @v lcr		Line control register value, or zero to leave unchanged
- * @ret rc		Return status code
- */
-int uart_init ( struct uart *uart, unsigned int baud, uint8_t lcr ) {
-	uint8_t dlm;
-	uint8_t dll;
-	int rc;
-
-	/* Check for existence of UART */
-	if ( ( rc = uart_exists ( uart ) ) != 0 )
-		return rc;
-
-	/* Configure divisor and line control register, if applicable */
-	if ( ! lcr )
-		lcr = uart_read ( uart, UART_LCR );
-	uart->lcr = lcr;
-	uart_write ( uart, UART_LCR, ( lcr | UART_LCR_DLAB ) );
-	if ( baud ) {
-		uart->divisor = ( UART_MAX_BAUD / baud );
-		dlm = ( ( uart->divisor >> 8 ) & 0xff );
-		dll = ( ( uart->divisor >> 0 ) & 0xff );
-		uart_write ( uart, UART_DLM, dlm );
-		uart_write ( uart, UART_DLL, dll );
-	} else {
-		dlm = uart_read ( uart, UART_DLM );
-		dll = uart_read ( uart, UART_DLL );
-		uart->divisor = ( ( dlm << 8 ) | dll );
-	}
-	uart_write ( uart, UART_LCR, ( lcr & ~UART_LCR_DLAB ) );
-
-	/* Disable interrupts */
-	uart_write ( uart, UART_IER, 0 );
-
-	/* Enable FIFOs */
-	uart_write ( uart, UART_FCR, UART_FCR_FE );
-
-	/* Assert DTR and RTS */
-	uart_write ( uart, UART_MCR, ( UART_MCR_DTR | UART_MCR_RTS ) );
-
-	/* Flush any stale data */
-	uart_flush ( uart );
-
-	return 0;
-}