broadcom: Remove SoC and board support

The reason for this code cleanup is the legacy
Google Purin board which isn't available anymore
and AFAIK never made it into the stores.

* Remove broadcom cygnus SoC support
* Remove /util/broadcom tool
* Remove Google Purin mainboard
* Remove MAINTAINERS entries

Change-Id: I148dd7eb0192d396cb69bc26c4062f88a764771a
Signed-off-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/29905
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 0 insertions, 128 deletions

diff --git a/src/soc/broadcom/cygnus/ns16550.c b/src/soc/broadcom/cygnus/ns16550.c
deleted file mode 100644
index 0223278b04..0000000000
--- a/src/soc/broadcom/cygnus/ns16550.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2000 Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
- * Copyright (C) Broadcom Corporation
- * Copyright (C) 2015 Google Inc.
- *
- * 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
- * (at your option) 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.
- */
-
-#include <arch/io.h>
-#include <boot/coreboot_tables.h>
-#include <console/uart.h>
-#include <delay.h>
-#include <soc/ns16550.h>
-
-#define SYS_NS16550_CLK		100000000
-#define SYS_NS16550_BAUDRATE	115200
-#define MODE_X_DIV		16
-#define SINGLE_CHAR_TIMEOUT	(50 * 1000)
-
-static struct ns16550 * const regs =
-	(void *)CONFIG_CONSOLE_SERIAL_UART_ADDRESS;
-
-static int calc_divisor(void)
-{
-	/* Compute divisor value. Normally, we should simply return:
-	 *   ns16550_clk / MODE_X_DIV / baudrate
-	 * but we need to round that value by adding 0.5.
-	 * Rounding is especially important at high baud rates.
-	 */
-	int div = MODE_X_DIV * SYS_NS16550_BAUDRATE;
-	return (SYS_NS16550_CLK + div / 2) / div;
-}
-
-static void ns16550_init(void)
-{
-	int baud_divisor = calc_divisor();
-
-	while (!(read32(&regs->lsr) & UART_LSR_TEMT))
-		;
-
-	write32(&regs->ier, 0);
-	write32(&regs->lcr, UART_LCR_BKSE | UART_LCR_8N1);
-	write32(&regs->dll, 0);
-	write32(&regs->dlm, 0);
-	write32(&regs->lcr, UART_LCR_8N1);
-	write32(&regs->mcr, UART_MCR_DTR | UART_MCR_RTS);
-	/* clear & enable FIFOs */
-	write32(&regs->fcr, UART_FCR_FIFO_EN | UART_FCR_RXSR | UART_FCR_TXSR);
-	write32(&regs->lcr, UART_LCR_BKSE | UART_LCR_8N1);
-	write32(&regs->dll, baud_divisor & 0xff);
-	write32(&regs->dlm, (baud_divisor >> 8) & 0xff);
-	write32(&regs->lcr, UART_LCR_8N1);
-}
-
-static void ns16550_tx_byte(unsigned char data)
-{
-	while ((read32(&regs->lsr) & UART_LSR_THRE) == 0)
-		;
-	write32(&regs->thr, data);
-}
-
-static void ns16550_tx_flush(void)
-{
-	while (!(read32(&regs->lsr) & UART_LSR_TEMT))
-		;
-}
-
-static int ns16550_tst_byte(void)
-{
-	return (read32(&regs->lsr) & UART_LSR_DR) != 0;
-}
-
-static unsigned char ns16550_rx_byte(void)
-{
-	unsigned long int i = SINGLE_CHAR_TIMEOUT;
-	while (i && !ns16550_tst_byte()) {
-		udelay(1);
-		i--;
-	}
-	if (i)
-		return read32(&regs->rbr);
-	else
-		return 0x0;
-}
-
-void uart_init(int idx)
-{
-	ns16550_init();
-}
-
-void uart_tx_byte(int idx, unsigned char data)
-{
-	ns16550_tx_byte(data);
-}
-
-void uart_tx_flush(int idx)
-{
-	ns16550_tx_flush();
-}
-
-unsigned char uart_rx_byte(int idx)
-{
-	return ns16550_rx_byte();
-}
-
-#ifndef __PRE_RAM__
-void uart_fill_lb(void *data)
-{
-	struct lb_serial serial;
-	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
-	serial.baseaddr = (uintptr_t)regs;
-	serial.baud = get_uart_baudrate();
-	serial.regwidth = 4;
-	lb_add_serial(&serial, data);
-
-	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
-}
-#endif