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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 "hw/sysbus.h"
29 #include "hw/hw.h"
30 #include "net/net.h"
31 #include "hw/block/flash.h"
32 #include "sysemu/sysemu.h"
33 #include "hw/devices.h"
34 #include "hw/boards.h"
35 #include "hw/xilinx.h"
36 #include "sysemu/blockdev.h"
37 #include "hw/char/serial.h"
38 #include "exec/address-spaces.h"
39 #include "hw/ssi.h"
40
41 #include "boot.h"
42 #include "pic_cpu.h"
43
44 #include "hw/stream.h"
45
46 #define LMB_BRAM_SIZE (128 * 1024)
47 #define FLASH_SIZE (32 * 1024 * 1024)
48
49 #define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"
50
51 #define NUM_SPI_FLASHES 4
52
53 #define MEMORY_BASEADDR 0x50000000
54 #define FLASH_BASEADDR 0x86000000
55 #define INTC_BASEADDR 0x81800000
56 #define TIMER_BASEADDR 0x83c00000
57 #define UART16550_BASEADDR 0x83e00000
58 #define AXIENET_BASEADDR 0x82780000
59 #define AXIDMA_BASEADDR 0x84600000
60
61 static void machine_cpu_reset(MicroBlazeCPU *cpu)
62 {
63 CPUMBState *env = &cpu->env;
64
65 env->pvr.regs[10] = 0x0e000000; /* virtex 6 */
66 /* setup pvr to match kernel setting */
67 env->pvr.regs[5] |= PVR5_DCACHE_WRITEBACK_MASK;
68 env->pvr.regs[0] |= PVR0_USE_FPU_MASK | PVR0_ENDI;
69 env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8);
70 env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK;
71 env->pvr.regs[4] = 0xc56b8000;
72 env->pvr.regs[5] = 0xc56be000;
73 }
74
75 static void
76 petalogix_ml605_init(QEMUMachineInitArgs *args)
77 {
78 ram_addr_t ram_size = args->ram_size;
79 const char *cpu_model = args->cpu_model;
80 MemoryRegion *address_space_mem = get_system_memory();
81 DeviceState *dev, *dma, *eth0;
82 MicroBlazeCPU *cpu;
83 SysBusDevice *busdev;
84 CPUMBState *env;
85 DriveInfo *dinfo;
86 int i;
87 hwaddr ddr_base = MEMORY_BASEADDR;
88 MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
89 MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
90 qemu_irq irq[32], *cpu_irq;
91
92 /* init CPUs */
93 if (cpu_model == NULL) {
94 cpu_model = "microblaze";
95 }
96 cpu = cpu_mb_init(cpu_model);
97 env = &cpu->env;
98
99 /* Attach emulated BRAM through the LMB. */
100 memory_region_init_ram(phys_lmb_bram, "petalogix_ml605.lmb_bram",
101 LMB_BRAM_SIZE);
102 vmstate_register_ram_global(phys_lmb_bram);
103 memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);
104
105 memory_region_init_ram(phys_ram, "petalogix_ml605.ram", ram_size);
106 vmstate_register_ram_global(phys_ram);
107 memory_region_add_subregion(address_space_mem, ddr_base, phys_ram);
108
109 dinfo = drive_get(IF_PFLASH, 0, 0);
110 /* 5th parameter 2 means bank-width
111 * 10th paremeter 0 means little-endian */
112 pflash_cfi01_register(FLASH_BASEADDR,
113 NULL, "petalogix_ml605.flash", FLASH_SIZE,
114 dinfo ? dinfo->bdrv : NULL, (64 * 1024),
115 FLASH_SIZE >> 16,
116 2, 0x89, 0x18, 0x0000, 0x0, 0);
117
118
119 cpu_irq = microblaze_pic_init_cpu(env);
120 dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 4);
121 for (i = 0; i < 32; i++) {
122 irq[i] = qdev_get_gpio_in(dev, i);
123 }
124
125 serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,
126 irq[5], 115200, serial_hds[0], DEVICE_LITTLE_ENDIAN);
127
128 /* 2 timers at irq 2 @ 100 Mhz. */
129 xilinx_timer_create(TIMER_BASEADDR, irq[2], 0, 100 * 1000000);
130
131 /* axi ethernet and dma initialization. */
132 qemu_check_nic_model(&nd_table[0], "xlnx.axi-ethernet");
133 eth0 = qdev_create(NULL, "xlnx.axi-ethernet");
134 dma = qdev_create(NULL, "xlnx.axi-dma");
135
136 /* FIXME: attach to the sysbus instead */
137 object_property_add_child(container_get(qdev_get_machine(), "/unattached"),
138 "xilinx-dma", OBJECT(dma), NULL);
139
140 xilinx_axiethernet_init(eth0, &nd_table[0], STREAM_SLAVE(dma),
141 0x82780000, irq[3], 0x1000, 0x1000);
142
143 xilinx_axidma_init(dma, STREAM_SLAVE(eth0), 0x84600000, irq[1], irq[0],
144 100 * 1000000);
145
146 {
147 SSIBus *spi;
148
149 dev = qdev_create(NULL, "xlnx.xps-spi");
150 qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES);
151 qdev_init_nofail(dev);
152 busdev = SYS_BUS_DEVICE(dev);
153 sysbus_mmio_map(busdev, 0, 0x40a00000);
154 sysbus_connect_irq(busdev, 0, irq[4]);
155
156 spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
157
158 for (i = 0; i < NUM_SPI_FLASHES; i++) {
159 qemu_irq cs_line;
160
161 dev = ssi_create_slave(spi, "n25q128");
162 cs_line = qdev_get_gpio_in(dev, 0);
163 sysbus_connect_irq(busdev, i+1, cs_line);
164 }
165 }
166
167 microblaze_load_kernel(cpu, ddr_base, ram_size, BINARY_DEVICE_TREE_FILE,
168 machine_cpu_reset);
169
170 }
171
172 static QEMUMachine petalogix_ml605_machine = {
173 .name = "petalogix-ml605",
174 .desc = "PetaLogix linux refdesign for xilinx ml605 little endian",
175 .init = petalogix_ml605_init,
176 .is_default = 0,
177 DEFAULT_MACHINE_OPTIONS,
178 };
179
180 static void petalogix_ml605_machine_init(void)
181 {
182 qemu_register_machine(&petalogix_ml605_machine);
183 }
184
185 machine_init(petalogix_ml605_machine_init);