1 /*
2  * Model of Petalogix linux reference design targeting Xilinx Spartan ml605
3  * board.
4  *
5  * Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
6  * Copyright (c) 2011 PetaLogix
7  * Copyright (c) 2009 Edgar E. Iglesias.
8  *
9  * Permission is hereby granted, free of charge, to any person obtaining a copy
10  * of this software and associated documentation files (the "Software"), to deal
11  * in the Software without restriction, including without limitation the rights
12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13  * copies of the Software, and to permit persons to whom the Software is
14  * furnished to do so, subject to the following conditions:
15  *
16  * The above copyright notice and this permission notice shall be included in
17  * all copies or substantial portions of the Software.
18  *
19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25  * THE SOFTWARE.
26  */
27 
28 #include "qemu/osdep.h"
29 #include "qemu/units.h"
30 #include "qapi/error.h"
31 #include "cpu.h"
32 #include "hw/sysbus.h"
33 #include "net/net.h"
34 #include "hw/block/flash.h"
35 #include "sysemu/sysemu.h"
36 #include "hw/boards.h"
37 #include "hw/char/serial.h"
38 #include "hw/qdev-properties.h"
39 #include "exec/address-spaces.h"
40 #include "hw/ssi/ssi.h"
41 
42 #include "boot.h"
43 
44 #include "hw/stream.h"
45 
46 #define LMB_BRAM_SIZE  (128 * KiB)
47 #define FLASH_SIZE     (32 * MiB)
48 
49 #define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"
50 
51 #define NUM_SPI_FLASHES 4
52 
53 #define SPI_BASEADDR 0x40a00000
54 #define MEMORY_BASEADDR 0x50000000
55 #define FLASH_BASEADDR 0x86000000
56 #define INTC_BASEADDR 0x81800000
57 #define TIMER_BASEADDR 0x83c00000
58 #define UART16550_BASEADDR 0x83e00000
59 #define AXIENET_BASEADDR 0x82780000
60 #define AXIDMA_BASEADDR 0x84600000
61 
62 #define AXIDMA_IRQ1         0
63 #define AXIDMA_IRQ0         1
64 #define TIMER_IRQ           2
65 #define AXIENET_IRQ         3
66 #define SPI_IRQ             4
67 #define UART16550_IRQ       5
68 
69 static void
70 petalogix_ml605_init(MachineState *machine)
71 {
72     ram_addr_t ram_size = machine->ram_size;
73     MemoryRegion *address_space_mem = get_system_memory();
74     DeviceState *dev, *dma, *eth0;
75     Object *ds, *cs;
76     MicroBlazeCPU *cpu;
77     SysBusDevice *busdev;
78     DriveInfo *dinfo;
79     int i;
80     MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
81     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
82     qemu_irq irq[32];
83 
84     /* init CPUs */
85     cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
86     object_property_set_str(OBJECT(cpu), "version", "8.10.a", &error_abort);
87     /* Use FPU but don't use floating point conversion and square
88      * root instructions
89      */
90     object_property_set_int(OBJECT(cpu), "use-fpu", 1, &error_abort);
91     object_property_set_bool(OBJECT(cpu), "dcache-writeback", true,
92                              &error_abort);
93     object_property_set_bool(OBJECT(cpu), "endianness", true, &error_abort);
94     qdev_realize(DEVICE(cpu), NULL, &error_abort);
95 
96     /* Attach emulated BRAM through the LMB.  */
97     memory_region_init_ram(phys_lmb_bram, NULL, "petalogix_ml605.lmb_bram",
98                            LMB_BRAM_SIZE, &error_fatal);
99     memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);
100 
101     memory_region_init_ram(phys_ram, NULL, "petalogix_ml605.ram", ram_size,
102                            &error_fatal);
103     memory_region_add_subregion(address_space_mem, MEMORY_BASEADDR, phys_ram);
104 
105     dinfo = drive_get(IF_PFLASH, 0, 0);
106     /* 5th parameter 2 means bank-width
107      * 10th paremeter 0 means little-endian */
108     pflash_cfi01_register(FLASH_BASEADDR, "petalogix_ml605.flash", FLASH_SIZE,
109                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
110                           64 * KiB, 2, 0x89, 0x18, 0x0000, 0x0, 0);
111 
112 
113     dev = qdev_new("xlnx.xps-intc");
114     qdev_prop_set_uint32(dev, "kind-of-intr", 1 << TIMER_IRQ);
115     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
116     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR);
117     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
118                        qdev_get_gpio_in(DEVICE(cpu), MB_CPU_IRQ));
119     for (i = 0; i < 32; i++) {
120         irq[i] = qdev_get_gpio_in(dev, i);
121     }
122 
123     serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,
124                    irq[UART16550_IRQ], 115200, serial_hd(0),
125                    DEVICE_LITTLE_ENDIAN);
126 
127     /* 2 timers at irq 2 @ 100 Mhz.  */
128     dev = qdev_new("xlnx.xps-timer");
129     qdev_prop_set_uint32(dev, "one-timer-only", 0);
130     qdev_prop_set_uint32(dev, "clock-frequency", 100 * 1000000);
131     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
132     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR);
133     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]);
134 
135     /* axi ethernet and dma initialization. */
136     qemu_check_nic_model(&nd_table[0], "xlnx.axi-ethernet");
137     eth0 = qdev_new("xlnx.axi-ethernet");
138     dma = qdev_new("xlnx.axi-dma");
139 
140     /* FIXME: attach to the sysbus instead */
141     object_property_add_child(qdev_get_machine(), "xilinx-eth", OBJECT(eth0));
142     object_property_add_child(qdev_get_machine(), "xilinx-dma", OBJECT(dma));
143 
144     ds = object_property_get_link(OBJECT(dma),
145                                   "axistream-connected-target", NULL);
146     cs = object_property_get_link(OBJECT(dma),
147                                   "axistream-control-connected-target", NULL);
148     qdev_set_nic_properties(eth0, &nd_table[0]);
149     qdev_prop_set_uint32(eth0, "rxmem", 0x1000);
150     qdev_prop_set_uint32(eth0, "txmem", 0x1000);
151     object_property_set_link(OBJECT(eth0), "axistream-connected", ds,
152                              &error_abort);
153     object_property_set_link(OBJECT(eth0), "axistream-control-connected", cs,
154                              &error_abort);
155     sysbus_realize_and_unref(SYS_BUS_DEVICE(eth0), &error_fatal);
156     sysbus_mmio_map(SYS_BUS_DEVICE(eth0), 0, AXIENET_BASEADDR);
157     sysbus_connect_irq(SYS_BUS_DEVICE(eth0), 0, irq[AXIENET_IRQ]);
158 
159     ds = object_property_get_link(OBJECT(eth0),
160                                   "axistream-connected-target", NULL);
161     cs = object_property_get_link(OBJECT(eth0),
162                                   "axistream-control-connected-target", NULL);
163     qdev_prop_set_uint32(dma, "freqhz", 100 * 1000000);
164     object_property_set_link(OBJECT(dma), "axistream-connected", ds,
165                              &error_abort);
166     object_property_set_link(OBJECT(dma), "axistream-control-connected", cs,
167                              &error_abort);
168     sysbus_realize_and_unref(SYS_BUS_DEVICE(dma), &error_fatal);
169     sysbus_mmio_map(SYS_BUS_DEVICE(dma), 0, AXIDMA_BASEADDR);
170     sysbus_connect_irq(SYS_BUS_DEVICE(dma), 0, irq[AXIDMA_IRQ0]);
171     sysbus_connect_irq(SYS_BUS_DEVICE(dma), 1, irq[AXIDMA_IRQ1]);
172 
173     {
174         SSIBus *spi;
175 
176         dev = qdev_new("xlnx.xps-spi");
177         qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES);
178         busdev = SYS_BUS_DEVICE(dev);
179         sysbus_realize_and_unref(busdev, &error_fatal);
180         sysbus_mmio_map(busdev, 0, SPI_BASEADDR);
181         sysbus_connect_irq(busdev, 0, irq[SPI_IRQ]);
182 
183         spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
184 
185         for (i = 0; i < NUM_SPI_FLASHES; i++) {
186             DriveInfo *dinfo = drive_get_next(IF_MTD);
187             qemu_irq cs_line;
188 
189             dev = qdev_new("n25q128");
190             if (dinfo) {
191                 qdev_prop_set_drive_err(dev, "drive",
192                                         blk_by_legacy_dinfo(dinfo),
193                                         &error_fatal);
194             }
195             qdev_realize_and_unref(dev, BUS(spi), &error_fatal);
196 
197             cs_line = qdev_get_gpio_in_named(dev, SSI_GPIO_CS, 0);
198             sysbus_connect_irq(busdev, i+1, cs_line);
199         }
200     }
201 
202     /* setup PVR to match kernel settings */
203     cpu->env.pvr.regs[4] = 0xc56b8000;
204     cpu->env.pvr.regs[5] = 0xc56be000;
205     cpu->env.pvr.regs[10] = 0x0e000000; /* virtex 6 */
206 
207     microblaze_load_kernel(cpu, MEMORY_BASEADDR, ram_size,
208                            machine->initrd_filename,
209                            BINARY_DEVICE_TREE_FILE,
210                            NULL);
211 
212 }
213 
214 static void petalogix_ml605_machine_init(MachineClass *mc)
215 {
216     mc->desc = "PetaLogix linux refdesign for xilinx ml605 little endian";
217     mc->init = petalogix_ml605_init;
218 }
219 
220 DEFINE_MACHINE("petalogix-ml605", petalogix_ml605_machine_init)
221