1 | /* |
2 | * Generic PKUnity SoC machine and board descriptor |
3 | * |
4 | * Copyright (C) 2010-2012 Guan Xuetao |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License version 2 as |
8 | * published by the Free Software Foundation, or any later version. |
9 | * See the COPYING file in the top-level directory. |
10 | */ |
11 | |
12 | #include "qemu/osdep.h" |
13 | #include "qapi/error.h" |
14 | #include "cpu.h" |
15 | #include "ui/console.h" |
16 | #include "hw/boards.h" |
17 | #include "hw/loader.h" |
18 | #include "sysemu/qtest.h" |
19 | |
20 | #undef DEBUG_PUV3 |
21 | #include "hw/unicore32/puv3.h" |
22 | #include "hw/input/i8042.h" |
23 | #include "hw/irq.h" |
24 | |
25 | #define KERNEL_LOAD_ADDR 0x03000000 |
26 | #define KERNEL_MAX_SIZE 0x00800000 /* Just a guess */ |
27 | |
28 | /* PKUnity System bus (AHB): 0xc0000000 - 0xedffffff (640MB) */ |
29 | #define PUV3_DMA_BASE (0xc0200000) /* AHB-4 */ |
30 | |
31 | /* PKUnity Peripheral bus (APB): 0xee000000 - 0xefffffff (128MB) */ |
32 | #define PUV3_GPIO_BASE (0xee500000) /* APB-5 */ |
33 | #define PUV3_INTC_BASE (0xee600000) /* APB-6 */ |
34 | #define PUV3_OST_BASE (0xee800000) /* APB-8 */ |
35 | #define PUV3_PM_BASE (0xeea00000) /* APB-10 */ |
36 | #define PUV3_PS2_BASE (0xeeb00000) /* APB-11 */ |
37 | |
38 | static void puv3_intc_cpu_handler(void *opaque, int irq, int level) |
39 | { |
40 | UniCore32CPU *cpu = opaque; |
41 | CPUState *cs = CPU(cpu); |
42 | |
43 | assert(irq == 0); |
44 | if (level) { |
45 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
46 | } else { |
47 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
48 | } |
49 | } |
50 | |
51 | static void puv3_soc_init(CPUUniCore32State *env) |
52 | { |
53 | qemu_irq cpu_intc, irqs[PUV3_IRQS_NR]; |
54 | DeviceState *dev; |
55 | MemoryRegion *i8042 = g_new(MemoryRegion, 1); |
56 | int i; |
57 | |
58 | /* Initialize interrupt controller */ |
59 | cpu_intc = qemu_allocate_irq(puv3_intc_cpu_handler, |
60 | env_archcpu(env), 0); |
61 | dev = sysbus_create_simple("puv3_intc" , PUV3_INTC_BASE, cpu_intc); |
62 | for (i = 0; i < PUV3_IRQS_NR; i++) { |
63 | irqs[i] = qdev_get_gpio_in(dev, i); |
64 | } |
65 | |
66 | /* Initialize minimal necessary devices for kernel booting */ |
67 | sysbus_create_simple("puv3_pm" , PUV3_PM_BASE, NULL); |
68 | sysbus_create_simple("puv3_dma" , PUV3_DMA_BASE, NULL); |
69 | sysbus_create_simple("puv3_ost" , PUV3_OST_BASE, irqs[PUV3_IRQS_OST0]); |
70 | sysbus_create_varargs("puv3_gpio" , PUV3_GPIO_BASE, |
71 | irqs[PUV3_IRQS_GPIOLOW0], irqs[PUV3_IRQS_GPIOLOW1], |
72 | irqs[PUV3_IRQS_GPIOLOW2], irqs[PUV3_IRQS_GPIOLOW3], |
73 | irqs[PUV3_IRQS_GPIOLOW4], irqs[PUV3_IRQS_GPIOLOW5], |
74 | irqs[PUV3_IRQS_GPIOLOW6], irqs[PUV3_IRQS_GPIOLOW7], |
75 | irqs[PUV3_IRQS_GPIOHIGH], NULL); |
76 | |
77 | /* Keyboard (i8042), mouse disabled for nographic */ |
78 | i8042_mm_init(irqs[PUV3_IRQS_PS2_KBD], NULL, i8042, PUV3_REGS_OFFSET, 4); |
79 | memory_region_add_subregion(get_system_memory(), PUV3_PS2_BASE, i8042); |
80 | } |
81 | |
82 | static void puv3_board_init(CPUUniCore32State *env, ram_addr_t ram_size) |
83 | { |
84 | MemoryRegion *ram_memory = g_new(MemoryRegion, 1); |
85 | |
86 | /* SDRAM at address zero. */ |
87 | memory_region_init_ram(ram_memory, NULL, "puv3.ram" , ram_size, |
88 | &error_fatal); |
89 | memory_region_add_subregion(get_system_memory(), 0, ram_memory); |
90 | } |
91 | |
92 | static const GraphicHwOps no_ops; |
93 | |
94 | static void puv3_load_kernel(const char *kernel_filename) |
95 | { |
96 | int size; |
97 | |
98 | if (kernel_filename == NULL && qtest_enabled()) { |
99 | return; |
100 | } |
101 | if (kernel_filename == NULL) { |
102 | error_report("kernel parameter cannot be empty" ); |
103 | exit(1); |
104 | } |
105 | |
106 | /* only zImage format supported */ |
107 | size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, |
108 | KERNEL_MAX_SIZE); |
109 | if (size < 0) { |
110 | error_report("Load kernel error: '%s'" , kernel_filename); |
111 | exit(1); |
112 | } |
113 | |
114 | /* cheat curses that we have a graphic console, only under ocd console */ |
115 | graphic_console_init(NULL, 0, &no_ops, NULL); |
116 | } |
117 | |
118 | static void puv3_init(MachineState *machine) |
119 | { |
120 | ram_addr_t ram_size = machine->ram_size; |
121 | const char *kernel_filename = machine->kernel_filename; |
122 | const char *initrd_filename = machine->initrd_filename; |
123 | CPUUniCore32State *env; |
124 | UniCore32CPU *cpu; |
125 | |
126 | if (initrd_filename) { |
127 | error_report("Please use kernel built-in initramdisk" ); |
128 | exit(1); |
129 | } |
130 | |
131 | cpu = UNICORE32_CPU(cpu_create(machine->cpu_type)); |
132 | env = &cpu->env; |
133 | |
134 | puv3_soc_init(env); |
135 | puv3_board_init(env, ram_size); |
136 | puv3_load_kernel(kernel_filename); |
137 | } |
138 | |
139 | static void puv3_machine_init(MachineClass *mc) |
140 | { |
141 | mc->desc = "PKUnity Version-3 based on UniCore32" ; |
142 | mc->init = puv3_init; |
143 | mc->is_default = 1; |
144 | mc->default_cpu_type = UNICORE32_CPU_TYPE_NAME("UniCore-II" ); |
145 | } |
146 | |
147 | DEFINE_MACHINE("puv3" , puv3_machine_init) |
148 | |