Merge xburst target.

[openwrt/svn-archive/archive.git] / target / linux / xburst / files-2.6.32 / arch / mips / jz4740 / prom.c

diff --git a/target/linux/xburst/files-2.6.32/arch/mips/jz4740/prom.c b/target/linux/xburst/files-2.6.32/arch/mips/jz4740/prom.c
new file mode 100644 (file)
index 0000000..e28d815
--- /dev/null
+++ b/target/linux/xburst/files-2.6.32/arch/mips/jz4740/prom.c
@@ -0,0 +1,111 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *    PROM library initialisation code, supports YAMON and U-Boot.
+ *
+ * Copyright 2000, 2001, 2006 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ *             ppopov@mvista.com or source@mvista.com
+ *
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <asm/bootinfo.h>
+#include <asm/mach-jz4740/regs.h>
+
+/* #define DEBUG_CMDLINE */
+
+int prom_argc;
+char **prom_argv, **prom_envp;
+
+char *prom_getcmdline(void)
+{
+       return &(arcs_cmdline[0]);
+}
+
+void prom_init_cmdline(void)
+{
+       char *cp, *c;
+       size_t i = 1;
+
+       cp = &(arcs_cmdline[0]);
+       while(i < prom_argc) {
+               c = prom_argv[i];
+               while (*c) {
+                       *cp++ = *c++;
+               }
+               *cp++ = ' ';
+               i++;
+       }
+       if (i > 1) {
+               *(cp - 1) = '\0';
+       }
+
+}
+
+void __init prom_init(void)
+{
+       unsigned long memsize;
+
+       prom_argc = (int) fw_arg0;
+       prom_argv = (char **) fw_arg1;
+       prom_envp = (char **) fw_arg2;
+
+       mips_machtype = MACH_INGENIC_JZ4740;
+
+       prom_init_cmdline();
+       memsize = 0x04000000;
+       add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+/* used by early printk */
+void prom_putchar(char c)
+{
+       volatile u8 *uart_lsr = (volatile u8 *)(UART0_BASE + OFF_LSR);
+       volatile u8 *uart_tdr = (volatile u8 *)(UART0_BASE + OFF_TDR);
+
+       /* Wait for fifo to shift out some bytes */
+       while ( !((*uart_lsr & (UARTLSR_TDRQ | UARTLSR_TEMT)) == 0x60) );
+
+       *uart_tdr = (u8)c;
+}
+
+const char *get_system_type(void)
+{
+       return "JZ4740";
+}
+
+EXPORT_SYMBOL(prom_getcmdline);