1 /*
2 * Altera 10M50 Nios2 GHRD
3 *
4 * Copyright (c) 2016 Marek Vasut <marek.vasut@gmail.com>
5 *
6 * Based on LabX device code
7 *
8 * Copyright (c) 2012 Chris Wulff <crwulff@gmail.com>
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, see
22 * <http://www.gnu.org/licenses/lgpl-2.1.html>
23 */
24
25 #include "qemu/osdep.h"
26 #include "qapi/error.h"
27 #include "cpu.h"
28
29 #include "hw/sysbus.h"
30 #include "hw/char/serial.h"
31 #include "hw/qdev-properties.h"
32 #include "sysemu/sysemu.h"
33 #include "hw/boards.h"
34 #include "exec/memory.h"
35 #include "exec/address-spaces.h"
36 #include "qemu/config-file.h"
37
38 #include "boot.h"
39
40 #define BINARY_DEVICE_TREE_FILE "10m50-devboard.dtb"
41
nios2_10m50_ghrd_init(MachineState * machine)42 static void nios2_10m50_ghrd_init(MachineState *machine)
43 {
44 Nios2CPU *cpu;
45 DeviceState *dev;
46 MemoryRegion *address_space_mem = get_system_memory();
47 MemoryRegion *phys_tcm = g_new(MemoryRegion, 1);
48 MemoryRegion *phys_tcm_alias = g_new(MemoryRegion, 1);
49 MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
50 MemoryRegion *phys_ram_alias = g_new(MemoryRegion, 1);
51 ram_addr_t tcm_base = 0x0;
52 ram_addr_t tcm_size = 0x1000; /* 1 kiB, but QEMU limit is 4 kiB */
53 ram_addr_t ram_base = 0x08000000;
54 ram_addr_t ram_size = 0x08000000;
55 qemu_irq irq[32];
56 int i;
57
58 /* Physical TCM (tb_ram_1k) with alias at 0xc0000000 */
59 memory_region_init_ram(phys_tcm, NULL, "nios2.tcm", tcm_size,
60 &error_abort);
61 memory_region_init_alias(phys_tcm_alias, NULL, "nios2.tcm.alias",
62 phys_tcm, 0, tcm_size);
63 memory_region_add_subregion(address_space_mem, tcm_base, phys_tcm);
64 memory_region_add_subregion(address_space_mem, 0xc0000000 + tcm_base,
65 phys_tcm_alias);
66
67 /* Physical DRAM with alias at 0xc0000000 */
68 memory_region_init_ram(phys_ram, NULL, "nios2.ram", ram_size,
69 &error_abort);
70 memory_region_init_alias(phys_ram_alias, NULL, "nios2.ram.alias",
71 phys_ram, 0, ram_size);
72 memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
73 memory_region_add_subregion(address_space_mem, 0xc0000000 + ram_base,
74 phys_ram_alias);
75
76 /* Create CPU -- FIXME */
77 cpu = NIOS2_CPU(cpu_create(TYPE_NIOS2_CPU));
78 for (i = 0; i < 32; i++) {
79 irq[i] = qdev_get_gpio_in_named(DEVICE(cpu), "IRQ", i);
80 }
81
82 /* Register: Altera 16550 UART */
83 serial_mm_init(address_space_mem, 0xf8001600, 2, irq[1], 115200,
84 serial_hd(0), DEVICE_NATIVE_ENDIAN);
85
86 /* Register: Timer sys_clk_timer */
87 dev = qdev_new("ALTR.timer");
88 qdev_prop_set_uint32(dev, "clock-frequency", 75 * 1000000);
89 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
90 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xf8001440);
91 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[0]);
92
93 /* Register: Timer sys_clk_timer_1 */
94 dev = qdev_new("ALTR.timer");
95 qdev_prop_set_uint32(dev, "clock-frequency", 75 * 1000000);
96 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
97 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xe0000880);
98 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[5]);
99
100 /* Configure new exception vectors and reset CPU for it to take effect. */
101 cpu->reset_addr = 0xd4000000;
102 cpu->exception_addr = 0xc8000120;
103 cpu->fast_tlb_miss_addr = 0xc0000100;
104
105 nios2_load_kernel(cpu, ram_base, ram_size, machine->initrd_filename,
106 BINARY_DEVICE_TREE_FILE, NULL);
107 }
108
nios2_10m50_ghrd_machine_init(struct MachineClass * mc)109 static void nios2_10m50_ghrd_machine_init(struct MachineClass *mc)
110 {
111 mc->desc = "Altera 10M50 GHRD Nios II design";
112 mc->init = nios2_10m50_ghrd_init;
113 mc->is_default = true;
114 }
115
116 DEFINE_MACHINE("10m50-ghrd", nios2_10m50_ghrd_machine_init);
117