1 /*
2  * Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800
3  * boards.
4  *
5  * Copyright (c) 2009 Edgar E. Iglesias.
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23  * THE SOFTWARE.
24  */
25 
26 #include "qemu/osdep.h"
27 #include "qemu/units.h"
28 #include "qapi/error.h"
29 #include "cpu.h"
30 #include "hw/sysbus.h"
31 #include "net/net.h"
32 #include "hw/block/flash.h"
33 #include "sysemu/sysemu.h"
34 #include "hw/boards.h"
35 #include "hw/misc/unimp.h"
36 #include "exec/address-spaces.h"
37 #include "hw/char/xilinx_uartlite.h"
38 
39 #include "boot.h"
40 
41 #define LMB_BRAM_SIZE  (128 * KiB)
42 #define FLASH_SIZE     (16 * MiB)
43 
44 #define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"
45 
46 #define MEMORY_BASEADDR 0x90000000
47 #define FLASH_BASEADDR 0xa0000000
48 #define GPIO_BASEADDR 0x81400000
49 #define INTC_BASEADDR 0x81800000
50 #define TIMER_BASEADDR 0x83c00000
51 #define UARTLITE_BASEADDR 0x84000000
52 #define ETHLITE_BASEADDR 0x81000000
53 
54 #define TIMER_IRQ           0
55 #define ETHLITE_IRQ         1
56 #define UARTLITE_IRQ        3
57 
58 static void
petalogix_s3adsp1800_init(MachineState * machine)59 petalogix_s3adsp1800_init(MachineState *machine)
60 {
61     ram_addr_t ram_size = machine->ram_size;
62     DeviceState *dev;
63     MicroBlazeCPU *cpu;
64     DriveInfo *dinfo;
65     int i;
66     hwaddr ddr_base = MEMORY_BASEADDR;
67     MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
68     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
69     qemu_irq irq[32];
70     MemoryRegion *sysmem = get_system_memory();
71 
72     cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
73     object_property_set_str(OBJECT(cpu), "version", "7.10.d", &error_abort);
74     qdev_realize(DEVICE(cpu), NULL, &error_abort);
75 
76     /* Attach emulated BRAM through the LMB.  */
77     memory_region_init_ram(phys_lmb_bram, NULL,
78                            "petalogix_s3adsp1800.lmb_bram", LMB_BRAM_SIZE,
79                            &error_fatal);
80     memory_region_add_subregion(sysmem, 0x00000000, phys_lmb_bram);
81 
82     memory_region_init_ram(phys_ram, NULL, "petalogix_s3adsp1800.ram",
83                            ram_size, &error_fatal);
84     memory_region_add_subregion(sysmem, ddr_base, phys_ram);
85 
86     dinfo = drive_get(IF_PFLASH, 0, 0);
87     pflash_cfi01_register(FLASH_BASEADDR,
88                           "petalogix_s3adsp1800.flash", FLASH_SIZE,
89                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
90                           64 * KiB, 1, 0x89, 0x18, 0x0000, 0x0, 1);
91 
92     dev = qdev_new("xlnx.xps-intc");
93     qdev_prop_set_uint32(dev, "kind-of-intr",
94                          1 << ETHLITE_IRQ | 1 << UARTLITE_IRQ);
95     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
96     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR);
97     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
98                        qdev_get_gpio_in(DEVICE(cpu), MB_CPU_IRQ));
99     for (i = 0; i < 32; i++) {
100         irq[i] = qdev_get_gpio_in(dev, i);
101     }
102 
103     dev = qdev_new(TYPE_XILINX_UARTLITE);
104     qdev_prop_set_chr(dev, "chardev", serial_hd(0));
105     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
106     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, UARTLITE_BASEADDR);
107     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[UARTLITE_IRQ]);
108 
109     /* 2 timers at irq 2 @ 62 Mhz.  */
110     dev = qdev_new("xlnx.xps-timer");
111     qdev_prop_set_uint32(dev, "one-timer-only", 0);
112     qdev_prop_set_uint32(dev, "clock-frequency", 62 * 1000000);
113     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
114     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR);
115     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]);
116 
117     dev = qdev_new("xlnx.xps-ethernetlite");
118     qemu_configure_nic_device(dev, true, NULL);
119     qdev_prop_set_uint32(dev, "tx-ping-pong", 0);
120     qdev_prop_set_uint32(dev, "rx-ping-pong", 0);
121     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
122     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, ETHLITE_BASEADDR);
123     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[ETHLITE_IRQ]);
124 
125     create_unimplemented_device("gpio", GPIO_BASEADDR, 0x10000);
126 
127     microblaze_load_kernel(cpu, ddr_base, ram_size,
128                            machine->initrd_filename,
129                            BINARY_DEVICE_TREE_FILE,
130                            NULL);
131 }
132 
petalogix_s3adsp1800_machine_init(MachineClass * mc)133 static void petalogix_s3adsp1800_machine_init(MachineClass *mc)
134 {
135     mc->desc = "PetaLogix linux refdesign for xilinx Spartan 3ADSP1800";
136     mc->init = petalogix_s3adsp1800_init;
137     mc->is_default = true;
138 }
139 
140 DEFINE_MACHINE("petalogix-s3adsp1800", petalogix_s3adsp1800_machine_init)
141