[Qemu-devel] [4678] ETRAX machine updates.

[Edgar E. Iglesias]

Revision: 4678
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4678
Author:   edgar_igl
Date:     2008-06-06 10:58:48 +0000 (Fri, 06 Jun 2008)

Log Message:
-----------
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.

Modified Paths:
--------------
    trunk/hw/etraxfs.c
    trunk/hw/etraxfs_dma.c

Modified: trunk/hw/etraxfs.c
===================================================================
--- trunk/hw/etraxfs.c  2008-06-06 10:55:02 UTC (rev 4677)
+++ trunk/hw/etraxfs.c  2008-06-06 10:58:48 UTC (rev 4678)
@@ -44,7 +44,6 @@
 #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 @@
 {
     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 @@
     }
 
     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 @@
     printf ("ram size =%ld\n", ram_size);
 }
 
-void DMA_run(void)
-{
-       etraxfs_dmac_run(etraxfs_dmac);
-}
-
 QEMUMachine bareetraxfs_machine = {
     "bareetraxfs",
     "Bare ETRAX FS board",

Modified: trunk/hw/etraxfs_dma.c
===================================================================
--- trunk/hw/etraxfs_dma.c      2008-06-06 10:55:02 UTC (rev 4677)
+++ trunk/hw/etraxfs_dma.c      2008-06-06 10:58:48 UTC (rev 4678)
@@ -273,6 +273,7 @@
                                  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 @@
         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 @@
 }
 
 
+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 @@
                                              ctrl->channels[i].regmap);
        }
 
+       /* Hax, we only support one DMA controller at a time.  */
+       etraxfs_dmac = ctrl;
        return ctrl;
   err:
        qemu_free(ctrl->channels);