xlnx-zcu102: Add support for the ZynqMP QSPI

Add support for the ZynqMP QSPI (consisting of the Generic QSPI and Legacy
QSPI) and connect Numonyx n25q512a11 flashes to it.

Signed-off-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20171126231634.9531-14-frasse.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/xlnx-zcu102.c

@@ -151,6 +151,29 @@ static void xlnx_zynqmp_init(XlnxZCU102 *s, MachineState *machine)
         sysbus_connect_irq(SYS_BUS_DEVICE(&s->soc.spi[i]), 1, cs_line);
     }
 
+    for (i = 0; i < XLNX_ZYNQMP_NUM_QSPI_FLASH; i++) {
+        SSIBus *spi_bus;
+        DeviceState *flash_dev;
+        qemu_irq cs_line;
+        DriveInfo *dinfo = drive_get_next(IF_MTD);
+        int bus = i / XLNX_ZYNQMP_NUM_QSPI_BUS_CS;
+        gchar *bus_name = g_strdup_printf("qspi%d", bus);
+
+        spi_bus = (SSIBus *)qdev_get_child_bus(DEVICE(&s->soc), bus_name);
+        g_free(bus_name);
+
+        flash_dev = ssi_create_slave_no_init(spi_bus, "n25q512a11");
+        if (dinfo) {
+            qdev_prop_set_drive(flash_dev, "drive", blk_by_legacy_dinfo(dinfo),
+                                &error_fatal);
+        }
+        qdev_init_nofail(flash_dev);
+
+        cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
+
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->soc.qspi), i + 1, cs_line);
+    }
+
     /* TODO create and connect IDE devices for ide_drive_get() */
 
     xlnx_zcu102_binfo.ram_size = ram_size;

hw/arm/xlnx-zynqmp.c

@@ -40,6 +40,10 @@
 #define SATA_ADDR           0xFD0C0000
 #define SATA_NUM_PORTS      2
 
+#define QSPI_ADDR           0xff0f0000
+#define LQSPI_ADDR          0xc0000000
+#define QSPI_IRQ            15
+
 #define DP_ADDR             0xfd4a0000
 #define DP_IRQ              113
 
@@ -171,6 +175,9 @@ static void xlnx_zynqmp_init(Object *obj)
         qdev_set_parent_bus(DEVICE(&s->spi[i]), sysbus_get_default());
     }
 
+    object_initialize(&s->qspi, sizeof(s->qspi), TYPE_XLNX_ZYNQMP_QSPIPS);
+    qdev_set_parent_bus(DEVICE(&s->qspi), sysbus_get_default());
+
     object_initialize(&s->dp, sizeof(s->dp), TYPE_XLNX_DP);
     qdev_set_parent_bus(DEVICE(&s->dp), sysbus_get_default());
 
@@ -411,6 +418,25 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
         g_free(bus_name);
     }
 
+    object_property_set_bool(OBJECT(&s->qspi), true, "realized", &err);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->qspi), 0, QSPI_ADDR);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->qspi), 1, LQSPI_ADDR);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->qspi), 0, gic_spi[QSPI_IRQ]);
+
+    for (i = 0; i < XLNX_ZYNQMP_NUM_QSPI_BUS; i++) {
+        gchar *bus_name;
+        gchar *target_bus;
+
+        /* Alias controller SPI bus to the SoC itself */
+        bus_name = g_strdup_printf("qspi%d", i);
+        target_bus = g_strdup_printf("spi%d", i);
+        object_property_add_alias(OBJECT(s), bus_name,
+                                  OBJECT(&s->qspi), target_bus,
+                                  &error_abort);
+        g_free(bus_name);
+        g_free(target_bus);
+    }
+
     object_property_set_bool(OBJECT(&s->dp), true, "realized", &err);
     if (err) {
         error_propagate(errp, err);

include/hw/arm/xlnx-zynqmp.h

@@ -40,6 +40,10 @@
 #define XLNX_ZYNQMP_NUM_SDHCI 2
 #define XLNX_ZYNQMP_NUM_SPIS 2
 
+#define XLNX_ZYNQMP_NUM_QSPI_BUS 2
+#define XLNX_ZYNQMP_NUM_QSPI_BUS_CS 2
+#define XLNX_ZYNQMP_NUM_QSPI_FLASH 4
+
 #define XLNX_ZYNQMP_NUM_OCM_BANKS 4
 #define XLNX_ZYNQMP_OCM_RAM_0_ADDRESS 0xFFFC0000
 #define XLNX_ZYNQMP_OCM_RAM_SIZE 0x10000
@@ -83,6 +87,7 @@ typedef struct XlnxZynqMPState {
     SysbusAHCIState sata;
     SDHCIState sdhci[XLNX_ZYNQMP_NUM_SDHCI];
     XilinxSPIPS spi[XLNX_ZYNQMP_NUM_SPIS];
+    XlnxZynqMPQSPIPS qspi;
     XlnxDPState dp;
     XlnxDPDMAState dpdma;