xref: /qemu/hw/microblaze/petalogix_ml605_mmu.c (revision 42fa9665e598c268a7ccfab5b92636618d9574ec)
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 "system/system.h"
36 #include "hw/boards.h"
37 #include "hw/char/serial-mm.h"
38 #include "hw/qdev-properties.h"
39 #include "system/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     EndianMode endianness = TARGET_BIG_ENDIAN ? ENDIAN_MODE_BIG
84                                               : ENDIAN_MODE_LITTLE;
85 
86     /* init CPUs */
87     cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
88     object_property_set_str(OBJECT(cpu), "version", "8.10.a", &error_abort);
89     /* Use FPU but don't use floating point conversion and square
90      * root instructions
91      */
92     object_property_set_int(OBJECT(cpu), "use-fpu", 1, &error_abort);
93     object_property_set_bool(OBJECT(cpu), "dcache-writeback", true,
94                              &error_abort);
95     object_property_set_bool(OBJECT(cpu), "little-endian", true, &error_abort);
96     qdev_realize(DEVICE(cpu), NULL, &error_abort);
97 
98     /* Attach emulated BRAM through the LMB.  */
99     memory_region_init_ram(phys_lmb_bram, NULL, "petalogix_ml605.lmb_bram",
100                            LMB_BRAM_SIZE, &error_fatal);
101     memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);
102 
103     memory_region_init_ram(phys_ram, NULL, "petalogix_ml605.ram", ram_size,
104                            &error_fatal);
105     memory_region_add_subregion(address_space_mem, MEMORY_BASEADDR, phys_ram);
106 
107     dinfo = drive_get(IF_PFLASH, 0, 0);
108     /* 5th parameter 2 means bank-width
109      * 10th parameter 0 means little-endian */
110     pflash_cfi01_register(FLASH_BASEADDR, "petalogix_ml605.flash", FLASH_SIZE,
111                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
112                           64 * KiB, 2, 0x89, 0x18, 0x0000, 0x0, 0);
113 
114 
115     dev = qdev_new("xlnx.xps-intc");
116     qdev_prop_set_enum(dev, "endianness", endianness);
117     qdev_prop_set_uint32(dev, "kind-of-intr", 1 << TIMER_IRQ);
118     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
119     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR);
120     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
121                        qdev_get_gpio_in(DEVICE(cpu), MB_CPU_IRQ));
122     for (i = 0; i < 32; i++) {
123         irq[i] = qdev_get_gpio_in(dev, i);
124     }
125 
126     serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,
127                    irq[UART16550_IRQ], 115200, serial_hd(0),
128                    DEVICE_LITTLE_ENDIAN);
129 
130     /* 2 timers at irq 2 @ 100 Mhz.  */
131     dev = qdev_new("xlnx.xps-timer");
132     qdev_prop_set_enum(dev, "endianness", endianness);
133     qdev_prop_set_uint32(dev, "one-timer-only", 0);
134     qdev_prop_set_uint32(dev, "clock-frequency", 100 * 1000000);
135     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
136     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR);
137     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]);
138 
139     /* axi ethernet and dma initialization. */
140     eth0 = qdev_new("xlnx.axi-ethernet");
141     dma = qdev_new("xlnx.axi-dma");
142 
143     /* FIXME: attach to the sysbus instead */
144     object_property_add_child(qdev_get_machine(), "xilinx-eth", OBJECT(eth0));
145     object_property_add_child(qdev_get_machine(), "xilinx-dma", OBJECT(dma));
146 
147     ds = object_property_get_link(OBJECT(dma),
148                                   "axistream-connected-target", NULL);
149     cs = object_property_get_link(OBJECT(dma),
150                                   "axistream-control-connected-target", NULL);
151     qemu_configure_nic_device(eth0, true, NULL);
152     qdev_prop_set_uint32(eth0, "rxmem", 0x1000);
153     qdev_prop_set_uint32(eth0, "txmem", 0x1000);
154     object_property_set_link(OBJECT(eth0), "axistream-connected", ds,
155                              &error_abort);
156     object_property_set_link(OBJECT(eth0), "axistream-control-connected", cs,
157                              &error_abort);
158     sysbus_realize_and_unref(SYS_BUS_DEVICE(eth0), &error_fatal);
159     sysbus_mmio_map(SYS_BUS_DEVICE(eth0), 0, AXIENET_BASEADDR);
160     sysbus_connect_irq(SYS_BUS_DEVICE(eth0), 0, irq[AXIENET_IRQ]);
161 
162     ds = object_property_get_link(OBJECT(eth0),
163                                   "axistream-connected-target", NULL);
164     cs = object_property_get_link(OBJECT(eth0),
165                                   "axistream-control-connected-target", NULL);
166     qdev_prop_set_uint32(dma, "freqhz", 100 * 1000000);
167     object_property_set_link(OBJECT(dma), "axistream-connected", ds,
168                              &error_abort);
169     object_property_set_link(OBJECT(dma), "axistream-control-connected", cs,
170                              &error_abort);
171     sysbus_realize_and_unref(SYS_BUS_DEVICE(dma), &error_fatal);
172     sysbus_mmio_map(SYS_BUS_DEVICE(dma), 0, AXIDMA_BASEADDR);
173     sysbus_connect_irq(SYS_BUS_DEVICE(dma), 0, irq[AXIDMA_IRQ0]);
174     sysbus_connect_irq(SYS_BUS_DEVICE(dma), 1, irq[AXIDMA_IRQ1]);
175 
176     {
177         SSIBus *spi;
178 
179         dev = qdev_new("xlnx.xps-spi");
180         qdev_prop_set_enum(dev, "endianness", endianness);
181         qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES);
182         busdev = SYS_BUS_DEVICE(dev);
183         sysbus_realize_and_unref(busdev, &error_fatal);
184         sysbus_mmio_map(busdev, 0, SPI_BASEADDR);
185         sysbus_connect_irq(busdev, 0, irq[SPI_IRQ]);
186 
187         spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
188 
189         for (i = 0; i < NUM_SPI_FLASHES; i++) {
190             dinfo = drive_get(IF_MTD, 0, i);
191             qemu_irq cs_line;
192 
193             dev = qdev_new("n25q128");
194             if (dinfo) {
195                 qdev_prop_set_drive_err(dev, "drive",
196                                         blk_by_legacy_dinfo(dinfo),
197                                         &error_fatal);
198             }
199             qdev_prop_set_uint8(dev, "cs", i);
200             qdev_realize_and_unref(dev, BUS(spi), &error_fatal);
201 
202             cs_line = qdev_get_gpio_in_named(dev, SSI_GPIO_CS, 0);
203             sysbus_connect_irq(busdev, i+1, cs_line);
204         }
205     }
206 
207     /* setup PVR to match kernel settings */
208     cpu->cfg.pvr_regs[4] = 0xc56b8000;
209     cpu->cfg.pvr_regs[5] = 0xc56be000;
210     cpu->cfg.pvr_regs[10] = 0x0e000000; /* virtex 6 */
211 
212     microblaze_load_kernel(cpu, true, MEMORY_BASEADDR, ram_size,
213                            machine->initrd_filename,
214                            BINARY_DEVICE_TREE_FILE,
215                            NULL);
216 
217 }
218 
219 static void petalogix_ml605_machine_init(MachineClass *mc)
220 {
221 #if TARGET_BIG_ENDIAN
222     mc->desc = "PetaLogix linux refdesign for xilinx ml605 (big endian)";
223     mc->deprecation_reason = "big endian support is not tested";
224 #else
225     mc->desc = "PetaLogix linux refdesign for xilinx ml605 (little endian)";
226 #endif
227     mc->init = petalogix_ml605_init;
228 }
229 
230 DEFINE_MACHINE("petalogix-ml605", petalogix_ml605_machine_init)
231