move the Gigabeat from gigabeat/meg-fx to s3c2440/gigabeat-fx to avoid problems with possible ports in the future: Gigabeat S/V (i.mx31 based) and Kenwood HD20GA7/HD20GA9 (s3c2440 based)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13200 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 96 insertions, 0 deletions

diff --git a/firmware/target/arm/s3c2440/gigabeat-fx/system-meg-fx.c b/firmware/target/arm/s3c2440/gigabeat-fx/system-meg-fx.c
new file mode 100644
index 0000000000..b7e59e66ea
--- /dev/null
+++ b/firmware/target/arm/s3c2440/gigabeat-fx/system-meg-fx.c
@@ -0,0 +1,96 @@
+#include "kernel.h"
+#include "system.h"
+#include "panic.h"
+
+#include "lcd.h"
+#include <stdio.h>
+
+const int TIMER4_MASK = (1 << 14);
+const int LCD_MASK   =  (1 << 16);
+const int DMA0_MASK   = (1 << 17);
+const int DMA1_MASK   = (1 << 18);
+const int DMA2_MASK   = (1 << 19);
+const int DMA3_MASK   = (1 << 20);
+
+int system_memory_guard(int newmode)
+{
+    (void)newmode;
+    return 0;
+}
+
+extern void timer4(void);
+extern void dma0(void);
+extern void dma1(void);
+extern void dma3(void);
+
+void irq(void)
+{
+    int intpending = INTPND;
+
+    SRCPND = intpending; /* Clear this interrupt. */
+    INTPND = intpending; /* Clear this interrupt. */
+
+    /* Timer 4 */
+    if ((intpending & TIMER4_MASK) != 0)
+        timer4();
+    else if ((intpending & DMA0_MASK) != 0)
+        dma0();
+    else
+    {
+        /* unexpected interrupt */
+    }
+}
+
+void system_reboot(void)
+{
+    WTCON = 0;
+    WTCNT = WTDAT = 1 ;
+    WTCON = 0x21;
+    for(;;)
+        ;
+}
+
+void system_init(void)
+{
+    /* Turn off un-needed devices */
+
+    /* Turn off all of the UARTS */
+    CLKCON &= ~( (1<<10) | (1<<11) |(1<<12) );
+
+    /* Turn off AC97 and Camera */
+    CLKCON &= ~( (1<<19) | (1<<20) );
+
+    /* Turn off USB host */
+    CLKCON &= ~(1 << 6);
+
+    /* Turn off NAND flash controller */
+    CLKCON &= ~(1 << 4);
+
+}
+
+
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+
+void set_cpu_frequency(long frequency)
+{
+    if (frequency == CPUFREQ_MAX)
+    {
+        asm volatile("mov r0, #0\n"
+            "mrc p15, 0, r0, c1, c0, 0\n"
+            "orr r0, r0, #3<<30\n" /* set to Asynchronous mode*/
+            "mcr p15, 0, r0, c1, c0, 0" : : : "r0");
+
+        FREQ = CPUFREQ_MAX;
+    }
+    else
+    {
+        asm volatile("mov r0, #0\n"
+            "mrc p15, 0, r0, c1, c0, 0\n"
+            "bic r0, r0, #3<<30\n" /* set to FastBus mode*/
+            "mcr p15, 0, r0, c1, c0, 0" : : : "r0");
+
+        FREQ = CPUFREQ_NORMAL;
+    }
+}
+
+#endif