[Qemu-devel] [PATCH v5 12/15] petalogix-ml605: added SPI controller with n25q128

[Peter A. G. Crosthwaite]

Added SPI controller to the reference design, with two n25q128 spi-flashes
connected.

Signed-off-by: Peter A. G. Crosthwaite <address@hidden>
---
 hw/petalogix_ml605_mmu.c |   28 +++++++++++++++++++++++++++-
 1 files changed, 27 insertions(+), 1 deletions(-)

diff --git a/hw/petalogix_ml605_mmu.c b/hw/petalogix_ml605_mmu.c
index 6a7d0c0..f0ecc1f 100644
--- a/hw/petalogix_ml605_mmu.c
+++ b/hw/petalogix_ml605_mmu.c
@@ -36,6 +36,7 @@
 #include "blockdev.h"
 #include "pc.h"
 #include "exec-memory.h"
+#include "ssi.h"
 
 #include "microblaze_boot.h"
 #include "microblaze_pic_cpu.h"
@@ -54,6 +55,8 @@
 #define AXIENET_BASEADDR 0x82780000
 #define AXIDMA_BASEADDR 0x84600000
 
+#define NUM_SPI_FLASHES 2
+
 static void machine_cpu_reset(MicroBlazeCPU *cpu)
 {
     CPUMBState *env = &cpu->env;
@@ -78,6 +81,7 @@ petalogix_ml605_init(ram_addr_t ram_size,
     MemoryRegion *address_space_mem = get_system_memory();
     DeviceState *dev;
     MicroBlazeCPU *cpu;
+    SysBusDevice *busdev;
     CPUMBState *env;
     DriveInfo *dinfo;
     int i;
@@ -135,9 +139,31 @@ petalogix_ml605_init(ram_addr_t ram_size,
                                      irq[1], irq[0], 100 * 1000000);
     }
 
+    {
+        SSIBus *spi;
+
+        dev = qdev_create(NULL, "xilinx,spi");
+        qdev_prop_set_uint8(dev, "num-cs", NUM_SPI_FLASHES);
+        qdev_init_nofail(dev);
+        busdev = sysbus_from_qdev(dev);
+        sysbus_mmio_map(busdev, 0, 0x40a00000);
+        sysbus_connect_irq(busdev, 0, irq[4]);
+
+        spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
+
+        for (i = 0; i < NUM_SPI_FLASHES; i++) {
+            qemu_irq cs_line;
+
+            dev = ssi_create_slave_no_init(spi, "m25p80");
+            qdev_prop_set_string(dev, "partname", (char *)"n25q128");
+            qdev_init_nofail(dev);
+            cs_line = qdev_get_gpio_in(dev, 0);
+            sysbus_connect_irq(busdev, i+1, cs_line);
+        }
+    }
+
     microblaze_load_kernel(cpu, ddr_base, ram_size, BINARY_DEVICE_TREE_FILE,
                                                             machine_cpu_reset);
-
 }
 
 static QEMUMachine petalogix_ml605_machine = {
-- 
1.7.0.4