Move PortalPlayer system.c code into the target tree.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13239 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 184 insertions, 0 deletions

diff --git a/firmware/target/arm/system-pp5002.c b/firmware/target/arm/system-pp5002.c
new file mode 100644
index 0000000000..4954d0660a
--- /dev/null
+++ b/firmware/target/arm/system-pp5002.c
@@ -0,0 +1,184 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Alan Korr
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdio.h>
+#include "config.h"
+#include <stdbool.h>
+#include "lcd.h"
+#include "font.h"
+#include "system.h"
+#include "kernel.h"
+#include "thread.h"
+#include "timer.h"
+#include "inttypes.h"
+#include "string.h"
+
+unsigned int ipod_hw_rev;
+#ifndef BOOTLOADER
+extern void TIMER1(void);
+extern void TIMER2(void);
+
+void irq(void)
+{
+    if(CURRENT_CORE == CPU)
+    {
+        if (CPU_INT_STAT & TIMER1_MASK)
+            TIMER1();
+        else if (CPU_INT_STAT & TIMER2_MASK)
+            TIMER2();
+    } else {
+        if (COP_INT_STAT & TIMER1_MASK)
+            TIMER1();
+        else if (COP_INT_STAT & TIMER2_MASK)
+            TIMER2();
+    }
+}
+
+#endif
+
+unsigned int current_core(void)
+{
+    if(((*(volatile unsigned long *)(0xc4000000)) & 0xff) == 0x55)
+    {
+        return CPU;
+    }
+    return COP;
+}
+
+
+/* TODO: The following two function have been lifted straight from IPL, and
+   hence have a lot of numeric addresses used straight. I'd like to use
+   #defines for these, but don't know what most of them are for or even what
+   they should be named. Because of this I also have no way of knowing how
+   to extend the funtions to do alternate cache configurations and/or
+   some other CPU frequency scaling. */
+
+#ifndef BOOTLOADER
+static void ipod_init_cache(void)
+{
+    int i =0;
+/* Initialising the cache in the iPod bootloader prevents Rockbox from starting */
+    outl(inl(0xcf004050) & ~0x700, 0xcf004050);
+    outl(0x4000, 0xcf004020);
+
+    outl(0x2, 0xcf004024);
+
+    /* PP5002 has 8KB cache */
+    for (i = 0xf0004000; i < (int)(0xf0006000); i += 16) {
+        outl(0x0, i);
+    }
+
+    outl(0x0, 0xf000f020);
+    outl(0x3fc0, 0xf000f024);
+
+    outl(0x3, 0xcf004024);
+}
+    
+#endif
+
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+void set_cpu_frequency(long frequency)
+{
+    unsigned long postmult;
+
+    if (CURRENT_CORE == CPU)
+    {
+        if (frequency == CPUFREQ_NORMAL)
+            postmult = CPUFREQ_NORMAL_MULT;
+        else if (frequency == CPUFREQ_MAX)
+            postmult = CPUFREQ_MAX_MULT;
+        else
+            postmult = CPUFREQ_DEFAULT_MULT;
+        cpu_frequency = frequency;
+
+        outl(0x02, 0xcf005008);
+        outl(0x55, 0xcf00500c);
+        outl(0x6000, 0xcf005010);
+
+        /* Clock frequency = (24/8)*postmult */
+        outl(8, 0xcf005018);
+        outl(postmult, 0xcf00501c);
+
+        outl(0xe000, 0xcf005010);
+
+        /* Wait for PLL relock? */
+        udelay(2000);
+
+        /* Select PLL as clock source? */
+        outl(0xa8, 0xcf00500c);
+    }
+}
+#elif !defined(BOOTLOADER)
+static void ipod_set_cpu_speed(void)
+{
+    outl(0x02, 0xcf005008);
+    outl(0x55, 0xcf00500c);
+    outl(0x6000, 0xcf005010);
+#if 1
+    // 75  MHz (24/24 * 75) (default)
+    outl(24, 0xcf005018);
+    outl(75, 0xcf00501c);
+#endif
+
+#if 0
+    // 66 MHz (24/3 * 8)
+    outl(3, 0xcf005018);
+    outl(8, 0xcf00501c);
+#endif
+
+    outl(0xe000, 0xcf005010);
+
+    udelay(2000);
+
+    outl(0xa8, 0xcf00500c);
+}
+#endif
+
+void system_init(void)
+{
+#ifndef BOOTLOADER
+    if (CURRENT_CORE == CPU)
+    {
+        /* Remap the flash ROM from 0x00000000 to 0x20000000. */
+        MMAP3_LOGICAL  = 0x20000000 | 0x3a00;
+        MMAP3_PHYSICAL = 0x00000000 | 0x3f84;
+
+        ipod_hw_rev = (*((volatile unsigned long*)(0x01fffffc)));
+        outl(-1, 0xcf00101c);
+        outl(-1, 0xcf001028);
+        outl(-1, 0xcf001038);
+#ifndef HAVE_ADJUSTABLE_CPU_FREQ
+        ipod_set_cpu_speed();
+#endif
+    }
+    ipod_init_cache();
+#endif
+}
+
+void system_reboot(void)
+{
+    outl(inl(0xcf005030) | 0x4, 0xcf005030);
+}
+
+int system_memory_guard(int newmode)
+{
+    (void)newmode;
+    return 0;
+}
+
+