Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / post / cpu / ppc4xx / uart.c

diff --git a/qemu/roms/u-boot/post/cpu/ppc4xx/uart.c b/qemu/roms/u-boot/post/cpu/ppc4xx/uart.c
new file mode 100644 (file)
index 0000000..545b054
--- /dev/null
+++ b/qemu/roms/u-boot/post/cpu/ppc4xx/uart.c
@@ -0,0 +1,92 @@
+/*
+ * (C) Copyright 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Author: Igor Lisitsin <igor@emcraft.com>
+ *
+ * Copyright 2010, Stefan Roese, DENX Software Engineering, sr@denx.de
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/ppc4xx.h>
+#include <ns16550.h>
+#include <asm/io.h>
+#include <serial.h>
+
+/*
+ * UART test
+ *
+ * The controllers are configured to loopback mode and several
+ * characters are transmitted.
+ */
+
+#include <post.h>
+
+#if CONFIG_POST & CONFIG_SYS_POST_UART
+
+/*
+ * This table defines the UART's that should be tested and can
+ * be overridden in the board config file
+ */
+#ifndef CONFIG_SYS_POST_UART_TABLE
+#define CONFIG_SYS_POST_UART_TABLE     { CONFIG_SYS_NS16550_COM1, \
+                       CONFIG_SYS_NS16550_COM2, CONFIG_SYS_NS16550_COM3, \
+                       CONFIG_SYS_NS16550_COM4 }
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int test_ctlr (struct NS16550 *com_port, int index)
+{
+       int res = -1;
+       char test_str[] = "*** UART Test String ***\r\n";
+       int i;
+       int divisor;
+
+       divisor = (get_serial_clock() + (gd->baudrate * (16 / 2))) /
+               (16 * gd->baudrate);
+       NS16550_init(com_port, divisor);
+
+       /*
+        * Set internal loopback mode in UART
+        */
+       out_8(&com_port->mcr, in_8(&com_port->mcr) | UART_MCR_LOOP);
+
+       /* Reset FIFOs */
+       out_8(&com_port->fcr, UART_FCR_RXSR | UART_FCR_TXSR);
+       udelay(100);
+
+       /* Flush RX-FIFO */
+       while (NS16550_tstc(com_port))
+               NS16550_getc(com_port);
+
+       for (i = 0; i < sizeof (test_str) - 1; i++) {
+               NS16550_putc(com_port, test_str[i]);
+               if (NS16550_getc(com_port) != test_str[i])
+                       goto done;
+       }
+       res = 0;
+done:
+       if (res)
+               post_log ("uart%d test failed\n", index);
+
+       return res;
+}
+
+int uart_post_test (int flags)
+{
+       int i, res = 0;
+       static unsigned long base[] = CONFIG_SYS_POST_UART_TABLE;
+
+       for (i = 0; i < ARRAY_SIZE(base); i++) {
+               if (test_ctlr((struct NS16550 *)base[i], i))
+                       res = -1;
+       }
+       serial_reinit_all ();
+
+       return res;
+}
+
+#endif /* CONFIG_POST & CONFIG_SYS_POST_UART */