Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / common / cmd_portio.c

diff --git a/qemu/roms/u-boot/common/cmd_portio.c b/qemu/roms/u-boot/common/cmd_portio.c
new file mode 100644 (file)
index 0000000..bf3a997
--- /dev/null
+++ b/qemu/roms/u-boot/common/cmd_portio.c
@@ -0,0 +1,145 @@
+/*
+ * (C) Copyright 2003
+ * Marc Singer, elf@buici.com
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/*
+ * Port I/O Functions
+ *
+ * Copied from FADS ROM, Dan Malek (dmalek@jlc.net)
+ */
+
+#include <common.h>
+#include <command.h>
+
+/* Display values from last command.
+ * Memory modify remembered values are different from display memory.
+ */
+static uint in_last_addr, in_last_size;
+static uint out_last_addr, out_last_size, out_last_value;
+
+
+int do_portio_out (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
+{
+       uint addr = out_last_addr;
+       uint size = out_last_size;
+       uint value = out_last_value;
+
+       if (argc != 3)
+               return CMD_RET_USAGE;
+
+       if ((flag & CMD_FLAG_REPEAT) == 0) {
+               /*
+                * New command specified.  Check for a size specification.
+                * Defaults to long if no or incorrect specification.
+                */
+               size = cmd_get_data_size (argv[0], 1);
+               addr = simple_strtoul (argv[1], NULL, 16);
+               value = simple_strtoul (argv[2], NULL, 16);
+       }
+#if defined (CONFIG_X86)
+
+       {
+               unsigned short port = addr;
+
+               switch (size) {
+               default:
+               case 1:
+                   {
+                       unsigned char ch = value;
+                       __asm__ volatile ("out %0, %%dx"::"a" (ch), "d" (port));
+                   }
+                       break;
+               case 2:
+                   {
+                       unsigned short w = value;
+                       __asm__ volatile ("out %0, %%dx"::"a" (w), "d" (port));
+                   }
+                       break;
+               case 4:
+                       __asm__ volatile ("out %0, %%dx"::"a" (value), "d" (port));
+
+                       break;
+               }
+       }
+
+#endif                                                 /* CONFIG_X86 */
+
+       out_last_addr = addr;
+       out_last_size = size;
+       out_last_value = value;
+
+       return 0;
+}
+
+U_BOOT_CMD(
+       out,    3,      1,      do_portio_out,
+       "write datum to IO port",
+       "[.b, .w, .l] port value\n    - output to IO port"
+);
+
+int do_portio_in (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
+{
+       uint addr = in_last_addr;
+       uint size = in_last_size;
+
+       if (argc != 2)
+               return CMD_RET_USAGE;
+
+       if ((flag & CMD_FLAG_REPEAT) == 0) {
+               /*
+                * New command specified.  Check for a size specification.
+                * Defaults to long if no or incorrect specification.
+                */
+               size = cmd_get_data_size (argv[0], 1);
+               addr = simple_strtoul (argv[1], NULL, 16);
+       }
+#if defined (CONFIG_X86)
+
+       {
+               unsigned short port = addr;
+
+               switch (size) {
+               default:
+               case 1:
+                   {
+                       unsigned char ch;
+                       __asm__ volatile ("in %%dx, %0":"=a" (ch):"d" (port));
+
+                       printf (" %02x\n", ch);
+                   }
+                       break;
+               case 2:
+                   {
+                       unsigned short w;
+                       __asm__ volatile ("in %%dx, %0":"=a" (w):"d" (port));
+
+                       printf (" %04x\n", w);
+                   }
+                       break;
+               case 4:
+                   {
+                       unsigned long l;
+                       __asm__ volatile ("in %%dx, %0":"=a" (l):"d" (port));
+
+                       printf (" %08lx\n", l);
+                   }
+                       break;
+               }
+       }
+#endif /* CONFIG_X86 */
+
+       in_last_addr = addr;
+       in_last_size = size;
+
+       return 0;
+}
+
+U_BOOT_CMD(
+       in,     2,      1,      do_portio_in,
+       "read data from an IO port",
+       "[.b, .w, .l] port\n"
+       "    - read datum from IO port"
+);