X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fopenbios%2Fdrivers%2Fpc_serial.c;fp=qemu%2Froms%2Fopenbios%2Fdrivers%2Fpc_serial.c;h=a638e1f998a573368a3723b1e5995514268f2e9e;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/roms/openbios/drivers/pc_serial.c b/qemu/roms/openbios/drivers/pc_serial.c
new file mode 100644
index 000000000..a638e1f99
--- /dev/null
+++ b/qemu/roms/openbios/drivers/pc_serial.c
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2003, 2004 Stefan Reinauer
+ *
+ * See the file "COPYING" for further information about
+ * the copyright and warranty status of this work.
+ */
+
+#include "config.h"
+#include "libopenbios/bindings.h"
+#include "kernel/kernel.h"
+#include "drivers/drivers.h"
+#include "libc/vsprintf.h"
+
+/* ******************************************************************
+ *                       serial console functions
+ * ****************************************************************** */
+
+#define SER_SIZE 8
+
+#define RBR(x)  x==2?0x2f8:0x3f8
+#define THR(x)  x==2?0x2f8:0x3f8
+#define IER(x)  x==2?0x2f9:0x3f9
+#define IIR(x)  x==2?0x2fa:0x3fa
+#define LCR(x)  x==2?0x2fb:0x3fb
+#define MCR(x)  x==2?0x2fc:0x3fc
+#define LSR(x)  x==2?0x2fd:0x3fd
+#define MSR(x)  x==2?0x2fe:0x3fe
+#define SCR(x)  x==2?0x2ff:0x3ff
+#define DLL(x)  x==2?0x2f8:0x3f8
+#define DLM(x)  x==2?0x2f9:0x3f9
+
+int uart_charav(int port)
+{
+	return ((inb(LSR(port)) & 1) != 0);
+}
+
+char uart_getchar(int port)
+{
+	while (!uart_charav(port));
+	return ((char) inb(RBR(port)) & 0177);
+}
+
+static void uart_port_putchar(int port, unsigned char c)
+{
+	if (c == '\n')
+		uart_port_putchar(port, '\r');
+	while (!(inb(LSR(port)) & 0x20));
+	outb(c, THR(port));
+}
+
+static void uart_init_line(int port, unsigned long baud)
+{
+	int i, baudconst;
+
+	switch (baud) {
+	case 115200:
+		baudconst = 1;
+		break;
+	case 57600:
+		baudconst = 2;
+		break;
+	case 38400:
+		baudconst = 3;
+		break;
+	case 19200:
+		baudconst = 6;
+		break;
+	case 9600:
+	default:
+		baudconst = 12;
+		break;
+	}
+
+	outb(0x87, LCR(port));
+	outb(0x00, DLM(port));
+	outb(baudconst, DLL(port));
+	outb(0x07, LCR(port));
+	outb(0x0f, MCR(port));
+
+	for (i = 10; i > 0; i--) {
+		if (inb(LSR(port)) == (unsigned int) 0)
+			break;
+		inb(RBR(port));
+	}
+}
+
+#ifdef CONFIG_DEBUG_CONSOLE_SERIAL
+int uart_init(int port, unsigned long speed)
+{
+        uart_init_line(port, speed);
+	return -1;
+}
+
+void uart_putchar(int c)
+{
+	uart_port_putchar(CONFIG_SERIAL_PORT, (unsigned char) (c & 0xff));
+}
+#endif
+
+/* ( addr len -- actual ) */
+static void
+pc_serial_read(unsigned long *address)
+{
+    char *addr;
+    int len;
+
+    len = POP();
+    addr = (char *)POP();
+
+    if (len != 1)
+        printk("pc_serial_read: bad len, addr %lx len %x\n", (unsigned long)addr, len);
+
+    if (uart_charav(*address)) {
+        *addr = (char)uart_getchar(*address);
+        PUSH(1);
+    } else {
+        PUSH(0);
+    }
+}
+
+/* ( addr len -- actual ) */
+static void
+pc_serial_write(unsigned long *address)
+{
+    unsigned char *addr;
+    int i, len;
+
+    len = POP();
+    addr = (unsigned char *)POP();
+
+     for (i = 0; i < len; i++) {
+        uart_port_putchar(*address, addr[i]);
+    }
+    PUSH(len);
+}
+
+static void
+pc_serial_close(void)
+{
+}
+
+static void
+pc_serial_open(unsigned long *address)
+{
+    RET ( -1 );
+}
+
+static void
+pc_serial_init(unsigned long *address)
+{
+    *address = POP();
+}
+
+DECLARE_UNNAMED_NODE(pc_serial, INSTALL_OPEN, sizeof(unsigned long));
+
+NODE_METHODS(pc_serial) = {
+    { "init",               pc_serial_init              },
+    { "open",               pc_serial_open              },
+    { "close",              pc_serial_close             },
+    { "read",               pc_serial_read              },
+    { "write",              pc_serial_write             },
+};
+
+void
+ob_pc_serial_init(const char *path, const char *dev_name, uint64_t base,
+                  uint64_t offset, int intr)
+{
+    phandle_t aliases;
+    char nodebuff[128];
+
+    snprintf(nodebuff, sizeof(nodebuff), "%s/%s", path, dev_name);
+    REGISTER_NAMED_NODE(pc_serial, nodebuff);
+
+    push_str(nodebuff);
+    fword("find-device");
+
+    PUSH(offset);
+    PUSH(find_package_method("init", get_cur_dev()));
+    fword("execute");
+
+    push_str("serial");
+    fword("device-type");
+
+    PUSH((base + offset) >> 32);
+    fword("encode-int");
+    PUSH((base + offset) & 0xffffffff);
+    fword("encode-int");
+    fword("encode+");
+    PUSH(SER_SIZE);
+    fword("encode-int");
+    fword("encode+");
+    push_str("reg");
+    fword("property");
+    
+#if !defined(CONFIG_SPARC64)
+    PUSH(offset);
+    fword("encode-int");
+    push_str("address");
+    fword("property");
+#endif
+    
+#if defined(CONFIG_SPARC64)
+    set_int_property(get_cur_dev(), "interrupts", 1);
+#endif
+
+    aliases = find_dev("/aliases");
+    set_property(aliases, "ttya", nodebuff, strlen(nodebuff) + 1);
+}