From patchwork Mon Aug 6 02:16:26 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v5,12/15] petalogix-ml605: added SPI controller with n25q128 Date: Sun, 05 Aug 2012 16:16:26 -0000 From: "Peter A. G. Crosthwaite" X-Patchwork-Id: 175247 Message-Id: <66fb4584d8bb0ee8b99b2a9470ee1521c47c6f87.1344218410.git.peter.crosthwaite@petalogix.com> To: qemu-devel@nongnu.org, paul@codesourcery.com, edgar.iglesias@gmail.com, peter.maydell@linaro.org, stefanha@gmail.com Cc: peter.crosthwaite@petalogix.com, i.mitsyanko@samsung.com, john.williams@petalogix.com Added SPI controller to the reference design, with two n25q128 spi-flashes connected. Signed-off-by: Peter A. G. Crosthwaite --- 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 = {