* CVS add missing files

* Cleanup compiler warnings

* Fix problem with side effects in macros in include/usb.h

* Patch by David Benson, 13 Nov 2003:
  bug 841358 - fix TFTP download size limit

* Fixing bug 850768:
  improper flush_cache() in load_serial()

* Fixing bug 834943:
  MPC8540 - missing volatile declarations

* Patch by Stephen Williams, 09 Feb 2004:
  Add support for Xilinx SystemACE chip:
  - New files common/cmd_ace.c and include/systemace.h
  - Hook systemace support into cmd_fat and the partition manager

* Patch by Travis Sawyer, 09 Feb 2004:
  Add bi_opbfreq & bi_iic_fast to 440GX bd_info as needed for Linux

1 files changed, 205 insertions, 0 deletions

diff --git a/common/cmd_ace.c b/common/cmd_ace.c
new file mode 100644
index 0000000..ee77f13
--- /dev/null
+++ b/common/cmd_ace.c
@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 2004 Picture Elements, Inc.
+ *    Stephen Williams (XXXXXXXXXXXXXXXX)
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form 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.
+ *
+ *    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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+#ident "$Id:$"
+
+/*
+ * The Xilinx SystemACE chip support is activated by defining
+ * CONFIG_SYSTEMACE to turn on support, and CFG_SYSTEMACE_BASE
+ * to set the base address of the device. This code currently
+ * assumes that the chip is connected via a byte-wide bus.
+ *
+ * The CONFIG_SYSTEMACE also adds to fat support the device class
+ * "ace" that allows the user to execute "fatls ace 0" and the
+ * like. This works by making the systemace_get_dev function
+ * available to cmd_fat.c:get_dev and filling in a block device
+ * description that has all the bits needed for FAT support to
+ * read sectors.
+ */
+
+# include  <common.h>
+# include  <command.h>
+# include  <systemace.h>
+# include  <part.h>
+# include  <asm/io.h>
+
+#ifdef CONFIG_SYSTEMACE
+
+/*
+ * The ace_readw and writew functions read/write 16bit words, but the
+ * offset value is the BYTE offset as most used in the Xilinx
+ * datasheet for the SystemACE chip. The CFG_SYSTEMACE_BASE is defined
+ * to be the base address for the chip, usually in the local
+ * peripheral bus.
+ */
+static unsigned ace_readw(unsigned offset)
+{
+      return readw(CFG_SYSTEMACE_BASE+offset);
+}
+
+static unsigned ace_writew(unsigned val, unsigned offset)
+{
+      writew(val, CFG_SYSTEMACE_BASE+offset);
+}
+
+/* */
+
+static unsigned long systemace_read(int dev,
+				    unsigned long start,
+				    unsigned long blkcnt,
+				    unsigned long *buffer);
+
+static block_dev_desc_t systemace_dev = {0};
+
+static int get_cf_lock(void)
+{
+      int retry = 10;
+
+	/* CONTROLREG = LOCKREG */
+      ace_writew(0x0002, 0x18);
+
+	/* Wait for MPULOCK in STATUSREG[15:0] */
+      while (! (ace_readw(0x04) & 0x0002)) {
+
+	    if (retry < 0)
+		  return -1;
+
+	    udelay(100000);
+	    retry -= 1;
+      }
+
+      return 0;
+}
+
+static void release_cf_lock(void)
+{
+	/* CONTROLREG = none */
+      ace_writew(0x0000, 0x18);
+}
+
+block_dev_desc_t *  systemace_get_dev(int dev)
+{
+	/* The first time through this, the systemace_dev object is
+	   not yet initialized. In that case, fill it in. */
+      if (systemace_dev.blksz == 0) {
+	    systemace_dev.if_type   = IF_TYPE_UNKNOWN;
+	    systemace_dev.part_type = PART_TYPE_UNKNOWN;
+	    systemace_dev.type      = DEV_TYPE_HARDDISK;
+	    systemace_dev.blksz     = 512;
+	    systemace_dev.removable = 1;
+	    systemace_dev.block_read = systemace_read;
+      }
+
+      return &systemace_dev;
+}
+
+/*
+ * This function is called (by dereferencing the block_read pointer in
+ * the dev_desc) to read blocks of data. The return value is the
+ * number of blocks read. A zero return indicates an error.
+ */
+static unsigned long systemace_read(int dev,
+				    unsigned long start,
+				    unsigned long blkcnt,
+				    unsigned long *buffer)
+{
+      unsigned val;
+      int retry;
+      unsigned char*dp = (unsigned char*)buffer;
+
+      if (get_cf_lock() < 0) {
+	    unsigned status = ace_readw(0x04);
+
+	      /* If CFDETECT is false, card is missing. */
+	    if (! (status&0x0010)) {
+		  printf("** CompactFlash card not present. **\n");
+		  return 0;
+	    }
+
+	    printf("**** ACE locked away from me (STATUSREG=%04x)\n", status);
+	    return 0;
+      }
+
+      retry = 2000;
+      for (;;) {
+	    unsigned val = ace_readw(0x04);
+
+	      /* If CFDETECT is false, card is missing. */
+	    if (! (val & 0x0010)) {
+		  printf("**** ACE CompactFlash not found.\n");
+		  release_cf_lock();
+		  return 0;
+	    }
+
+	      /* If RDYFORCMD, then we are ready to go. */
+	    if (val & 0x0100)
+		  break;
+
+	    if (retry < 0) {
+		  printf("**** SystemACE not ready.\n");
+		  release_cf_lock();
+		  return 0;
+	    }
+
+	    udelay(1000);
+	    retry -= 1;
+      }
+
+	/* Write LBA block address */
+      ace_writew(start & 0xffff, 0x10);
+      start >>= 16;
+      ace_writew(start & 0xff, 0x12);
+
+	/* Write sector count | ReadMemCardData. */
+      ace_writew(blkcnt | 0x0300, 0x14);
+
+	/* CONTROLREG = CFGRESET|LOCKREQ */
+      ace_writew(0x0082, 0x18);
+
+      retry = blkcnt * 16;
+      while (retry > 0) {
+	    int idx;
+
+	      /* Wait for buffer to become ready. */
+	    while (! (ace_readw(0x04) & 0x0020)) {
+		  udelay(1000);
+	    }
+
+	      /* Read 16 words of 2bytes from the sector buffer. */
+	    for (idx = 0 ;  idx < 16 ;  idx += 1) {
+		  unsigned short val = ace_readw(0x40);
+		  *dp++ = val & 0xff;
+		  *dp++ = (val>>8) & 0xff;
+	    }
+
+	    retry -= 1;
+      }
+
+      release_cf_lock();
+
+      return blkcnt;
+}
+
+
+#endif
+
+/*
+ * $Log: $
+ */
+