* Patch by Stephen Williams, 01 Apr 2004:

  Add support for Picture Elements JSE board

* Patch by Christian Pell, 01 Apr 2004:
  Add CompactFlash support for PXA systems.

1 files changed, 160 insertions, 0 deletions

diff --git a/board/jse/jse.c b/board/jse/jse.c
new file mode 100644
index 0000000..9290814
--- /dev/null
+++ b/board/jse/jse.c
@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2004 Picture Elements, Inc.
+ *    Stephen Williams (steve@icarus.com)
+ *
+ *    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
+ */
+
+# include  <common.h>
+# include  <ppc4xx.h>
+# include  <asm/processor.h>
+# include  <asm/io.h>
+# include  "jse_priv.h"
+
+/*
+ * This function is run very early, out of flash, and before devices are
+ * initialized. It is called by lib_ppc/board.c:board_init_f by virtue
+ * of being in the init_sequence array.
+ *
+ * The SDRAM has been initialized already -- start.S:start called
+ * init.S:init_sdram early on -- but it is not yet being used for
+ * anything, not even stack. So be careful.
+ */
+int board_early_init_f (void)
+{
+   /*-------------------------------------------------------------------------+
+   | Interrupt controller setup for the JSE board.
+   | Note: IRQ 0-15  405GP internally generated; active high; level sensitive
+   |       IRQ 16    405GP internally generated; active low; level sensitive
+   |       IRQ 17-24 RESERVED/UNUSED
+   |       IRQ 25 (EXT IRQ 0) PCI SLOT 0; active low; level sensitive
+   |       IRQ 26 (EXT IRQ 1) PCI SLOT 1; active low; level sensitive
+   |       IRQ 27 (EXT IRQ 2) JP2C CHIP ; active low; level sensitive
+   |       IRQ 28 (EXT IRQ 3) PCI bridge; active low; level sensitive
+   |       IRQ 29 (EXT IRQ 4) SystemACE IRQ; active high
+   |       IRQ 30 (EXT IRQ 5) SystemACE BRdy (unused)
+   |       IRQ 31 (EXT IRQ 6) (unused)
+   +-------------------------------------------------------------------------*/
+	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr (uicer, 0x00000000);	/* disable all ints */
+	mtdcr (uiccr, 0x00000000);	/* set all to be non-critical */
+	mtdcr (uicpr, 0xFFFFFF87);	/* set int polarities */
+	mtdcr (uictr, 0x10000000);	/* set int trigger levels */
+	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+
+	/* Configure the interface to the SystemACE MCU port.
+	   The SystemACE is fast, but there is no reason to have
+	   excessivly tight timings. So the settings are slightly
+	   generous. */
+
+	/* EBC0_B1AP: BME=1, TWT=2, CSN=0, OEN=1,
+	   WBN=0, WBF=1, TH=0,  RE=0,  SOR=0, BEM=0, PEN=0 */
+	mtdcr (ebccfga, pb1ap);
+	mtdcr (ebccfgd, 0x01011000);
+
+	/* EBC0_B1CR: BAS=x, BS=0(1MB), BU=3(R/W), BW=0(8bits) */
+	mtdcr (ebccfga, pb1cr);
+	mtdcr (ebccfgd, CFG_SYSTEMACE_BASE | 0x00018000);
+
+	/* Enable the /PerWE output as /PerWE, instead of /PCIINT. */
+	/* CPC0_CR1 |= PCIPW */
+	mtdcr (0xb2, mfdcr (0xb2) | 0x00004000);
+
+	return 0;
+}
+
+#ifdef CONFIG_BOARD_PRE_INIT
+int board_pre_init (void)
+{
+	return board_early_init_f ();
+}
+
+#endif
+
+/*
+ * This function is also called by lib_ppc/board.c:board_init_f (it is
+ * also in the init_sequence array) but later. Many more things are
+ * configured, but we are still running from flash.
+ */
+int checkboard (void)
+{
+	unsigned vers, status;
+
+	/* check that the SystemACE chip is alive. */
+	printf ("ACE:   ");
+	vers = readw (CFG_SYSTEMACE_BASE + 0x16);
+	printf ("SystemACE %u.%u (build %u)",
+		(vers >> 12) & 0x0f, (vers >> 8) & 0x0f, vers & 0xff);
+
+	status = readl (CFG_SYSTEMACE_BASE + 0x04);
+#ifdef DEBUG
+	printf (" STATUS=0x%08x", status);
+#endif
+	/* If the flash card is present and there is an initial error,
+	   then force a restart of the program. */
+	if (status & 0x00000010) {
+		printf (" CFDETECT");
+
+		if (status & 0x04) {
+			/* CONTROLREG = CFGPROG */
+			writew (0x1000, CFG_SYSTEMACE_BASE + 0x18);
+			udelay (500);
+			/* CONTROLREG = CFGRESET */
+			writew (0x0080, CFG_SYSTEMACE_BASE + 0x18);
+			udelay (500);
+			writew (0x0000, CFG_SYSTEMACE_BASE + 0x18);
+			/* CONTROLREG = CFGSTART */
+			writew (0x0020, CFG_SYSTEMACE_BASE + 0x18);
+
+			status = readl (CFG_SYSTEMACE_BASE + 0x04);
+		}
+	}
+
+	/* Wait for the SystemACE to program its chain of devices. */
+	while ((status & 0x84) == 0x00) {
+		udelay (500);
+		status = readl (CFG_SYSTEMACE_BASE + 0x04);
+	}
+
+	if (status & 0x04)
+		printf (" CFG-ERROR");
+	if (status & 0x80)
+		printf (" CFGDONE");
+
+	printf ("\n");
+
+	/* Force /RTS to active. The board it not wired quite
+	   correctly to use cts/rtc flow control, so just force the
+	   /RST active and forget about it. */
+	writeb (readb (0xef600404) | 0x03, 0xef600404);
+
+	printf ("JSE:   ready\n");
+
+	return 0;
+}
+
+/* **** No more functions called by board_init_f. **** */
+
+/*
+ * This function is called by lib_ppc/board.c:board_init_r. At this
+ * point, basic setup is done, U-Boot has been moved into SDRAM and
+ * PCI has been set up. From here we done late setup.
+ */
+int misc_init_r (void)
+{
+	host_bridge_init ();
+	return 0;
+}