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-rw-r--r--arch/mips/txx9/jmr3927/prom.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/mips/txx9/jmr3927/prom.c b/arch/mips/txx9/jmr3927/prom.c
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+/*
+ * BRIEF MODULE DESCRIPTION
+ * PROM library initialisation code, assuming a version of
+ * pmon is the boot code.
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ * ahennessy@mvista.com
+ *
+ * Based on arch/mips/au1000/common/prom.c
+ *
+ * This file was derived from Carsten Langgaard's
+ * arch/mips/mips-boards/xx files.
+ *
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/jmr3927.h>
+
+#define TIMEOUT 0xffffff
+
+void
+prom_putchar(char c)
+{
+ int i = 0;
+
+ do {
+ i++;
+ if (i>TIMEOUT)
+ break;
+ } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS));
+ tx3927_sioptr(1)->tfifo = c;
+ return;
+}
+
+void
+puts(const char *cp)
+{
+ while (*cp)
+ prom_putchar(*cp++);
+ prom_putchar('\r');
+ prom_putchar('\n');
+}
+
+void __init jmr3927_prom_init(void)
+{
+ /* CCFG */
+ if ((tx3927_ccfgptr->ccfg & TX3927_CCFG_TLBOFF) == 0)
+ puts("Warning: TX3927 TLB off\n");
+
+ prom_init_cmdline();
+ add_memory_region(0, JMR3927_SDRAM_SIZE, BOOT_MEM_RAM);
+}