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
38static 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
51static 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
82static 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
92static const GraphicHwOps no_ops;
93
94static 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
118static 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
139static 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
147DEFINE_MACHINE("puv3", puv3_machine_init)
148