Initial commit: OpenHarmony-v4.0-ReleaseOpenHarmony-v4.0-Release

1 files changed, 54 insertions, 0 deletions

diff --git a/arch/mips/rb532/serial.c b/arch/mips/rb532/serial.c
new file mode 100644
index 000000000..70482540b
--- /dev/null
+++ b/arch/mips/rb532/serial.c
@@ -0,0 +1,54 @@
+/*
+ *  BRIEF MODULE DESCRIPTION
+ *     Serial port initialisation.
+ *
+ *  Copyright 2004 IDT Inc. (rischelp@idt.com)
+ *
+ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/irq.h>
+
+#include <asm/serial.h>
+#include <asm/mach-rc32434/rb.h>
+
+extern unsigned int idt_cpu_freq;
+
+static struct uart_port rb532_uart = {
+        .flags = UPF_BOOT_AUTOCONF,
+        .line = 0,
+        .irq = UART0_IRQ,
+        .iotype = UPIO_MEM,
+        .membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
+        .regshift = 2
+};
+
+int __init setup_serial_port(void)
+{
+        rb532_uart.uartclk = idt_cpu_freq;
+
+        return early_serial_setup(&rb532_uart);
+}
+arch_initcall(setup_serial_port);