ETRAX machine updates.

* Move DMA_run into the dma controller to allow for multiple ETRAX/CRIS machines.
* Support both ELF and kimage kernel images.
* Correct emulation of the DMA RW_DATA register.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4678 c046a42c-6fe2-441c-8c8c-71466251a162

hw/etraxfs.c

@@ -44,7 +44,6 @@ void etraxfs_ser_init(CPUState *env, qemu_irq *irq, CharDriverState *chr,
 #define FLASH_SIZE 0x2000000
 #define INTMEM_SIZE (128 * 1024)
 
-static void *etraxfs_dmac;
 static uint32_t bootstrap_pc;
 
 static void main_cpu_reset(void *opaque)
@@ -64,6 +63,7 @@ void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
 {
     CPUState *env;
     qemu_irq *pic;
+    void *etraxfs_dmac;
     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
     int kernel_size;
     int i;
@@ -138,19 +138,20 @@ void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
     }
 
     if (kernel_filename) {
-#if 1
+        uint64_t entry;
         /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis 
            devboard SDK.  */
         kernel_size = load_elf(kernel_filename, 0,
-                               &bootstrap_pc, NULL, NULL);
-#else
-        /* Takes a kimage from the axis devboard SDK.  */
-        kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
-        bootstrap_pc = 0x40004000;
-        /* magic for boot.  */
-        env->regs[8] = 0x56902387;
-        env->regs[9] = 0x40004000 + kernel_size;
-#endif
+                               &entry, NULL, NULL);
+        bootstrap_pc = entry;
+        if (kernel_size < 0) {
+            /* Takes a kimage from the axis devboard SDK.  */
+            kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
+            bootstrap_pc = 0x40004000;
+            /* magic for boot.  */
+            env->regs[8] = 0x56902387;
+            env->regs[9] = 0x40004000 + kernel_size;
+        }
     }
     env->pc = bootstrap_pc;
 
@@ -158,11 +159,6 @@ void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
     printf ("ram size =%ld\n", ram_size);
 }
 
-void DMA_run(void)
-{
-	etraxfs_dmac_run(etraxfs_dmac);
-}
-
 QEMUMachine bareetraxfs_machine = {
     "bareetraxfs",
     "Bare ETRAX FS board",

hw/etraxfs_dma.c

@@ -273,6 +273,7 @@ static void channel_load_d(struct fs_dma_ctrl *ctrl, int c)
 				  sizeof ctrl->channels[c].current_d);
 
 	D(dump_d(c, &ctrl->channels[c].current_d));
+	ctrl->channels[c].regs[RW_DATA] = addr;
 	ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
 		(uint32_t)ctrl->channels[c].current_d.buf;
 }
@@ -561,7 +562,7 @@ dma_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
         switch (addr)
         {
 		case RW_DATA:
-			printf("RW_DATA=%x\n", value);			
+			ctrl->channels[c].regs[addr] = value;
 			break;
 
 		case RW_CFG:
@@ -658,6 +659,13 @@ void etraxfs_dmac_connect_client(void *opaque, int c,
 }
 
 
+static void *etraxfs_dmac;
+void DMA_run(void)
+{
+	if (etraxfs_dmac)
+		etraxfs_dmac_run(etraxfs_dmac);
+}
+
 void *etraxfs_dmac_init(CPUState *env, 
 			target_phys_addr_t base, int nr_channels)
 {
@@ -686,6 +694,8 @@ void *etraxfs_dmac_init(CPUState *env,
 					      ctrl->channels[i].regmap);
 	}
 
+	/* Hax, we only support one DMA controller at a time.  */
+	etraxfs_dmac = ctrl;
 	return ctrl;
   err:
 	qemu_free(ctrl->channels);