Merge remote-tracking branch 'remotes/cohuck-gitlab/tags/s390x-20210305' into staging
[qemu.git] / hw / unicore32 / puv3.c
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 #include "hw/unicore32/puv3.h"
20 #include "hw/input/i8042.h"
21 #include "hw/irq.h"
22
23 #define KERNEL_LOAD_ADDR 0x03000000
24 #define KERNEL_MAX_SIZE 0x00800000 /* Just a guess */
25
26 /* PKUnity System bus (AHB): 0xc0000000 - 0xedffffff (640MB) */
27 #define PUV3_DMA_BASE (0xc0200000) /* AHB-4 */
28
29 /* PKUnity Peripheral bus (APB): 0xee000000 - 0xefffffff (128MB) */
30 #define PUV3_GPIO_BASE (0xee500000) /* APB-5 */
31 #define PUV3_INTC_BASE (0xee600000) /* APB-6 */
32 #define PUV3_OST_BASE (0xee800000) /* APB-8 */
33 #define PUV3_PM_BASE (0xeea00000) /* APB-10 */
34 #define PUV3_PS2_BASE (0xeeb00000) /* APB-11 */
35
36 static void puv3_intc_cpu_handler(void *opaque, int irq, int level)
37 {
38 UniCore32CPU *cpu = opaque;
39 CPUState *cs = CPU(cpu);
40
41 assert(irq == 0);
42 if (level) {
43 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
44 } else {
45 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
46 }
47 }
48
49 static void puv3_soc_init(CPUUniCore32State *env)
50 {
51 qemu_irq cpu_intc, irqs[PUV3_IRQS_NR];
52 DeviceState *dev;
53 MemoryRegion *i8042 = g_new(MemoryRegion, 1);
54 int i;
55
56 /* Initialize interrupt controller */
57 cpu_intc = qemu_allocate_irq(puv3_intc_cpu_handler,
58 env_archcpu(env), 0);
59 dev = sysbus_create_simple("puv3_intc", PUV3_INTC_BASE, cpu_intc);
60 for (i = 0; i < PUV3_IRQS_NR; i++) {
61 irqs[i] = qdev_get_gpio_in(dev, i);
62 }
63
64 /* Initialize minimal necessary devices for kernel booting */
65 sysbus_create_simple("puv3_pm", PUV3_PM_BASE, NULL);
66 sysbus_create_simple("puv3_dma", PUV3_DMA_BASE, NULL);
67 sysbus_create_simple("puv3_ost", PUV3_OST_BASE, irqs[PUV3_IRQS_OST0]);
68 sysbus_create_varargs("puv3_gpio", PUV3_GPIO_BASE,
69 irqs[PUV3_IRQS_GPIOLOW0], irqs[PUV3_IRQS_GPIOLOW1],
70 irqs[PUV3_IRQS_GPIOLOW2], irqs[PUV3_IRQS_GPIOLOW3],
71 irqs[PUV3_IRQS_GPIOLOW4], irqs[PUV3_IRQS_GPIOLOW5],
72 irqs[PUV3_IRQS_GPIOLOW6], irqs[PUV3_IRQS_GPIOLOW7],
73 irqs[PUV3_IRQS_GPIOHIGH], NULL);
74
75 /* Keyboard (i8042), mouse disabled for nographic */
76 i8042_mm_init(irqs[PUV3_IRQS_PS2_KBD], NULL, i8042, PUV3_REGS_OFFSET, 4);
77 memory_region_add_subregion(get_system_memory(), PUV3_PS2_BASE, i8042);
78 }
79
80 static void puv3_board_init(CPUUniCore32State *env, ram_addr_t ram_size)
81 {
82 MemoryRegion *ram_memory = g_new(MemoryRegion, 1);
83
84 /* SDRAM at address zero. */
85 memory_region_init_ram(ram_memory, NULL, "puv3.ram", ram_size,
86 &error_fatal);
87 memory_region_add_subregion(get_system_memory(), 0, ram_memory);
88 }
89
90 static const GraphicHwOps no_ops;
91
92 static void puv3_load_kernel(const char *kernel_filename)
93 {
94 int size;
95
96 if (kernel_filename == NULL && qtest_enabled()) {
97 return;
98 }
99 if (kernel_filename == NULL) {
100 error_report("kernel parameter cannot be empty");
101 exit(1);
102 }
103
104 /* only zImage format supported */
105 size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
106 KERNEL_MAX_SIZE);
107 if (size < 0) {
108 error_report("Load kernel error: '%s'", kernel_filename);
109 exit(1);
110 }
111
112 /* cheat curses that we have a graphic console, only under ocd console */
113 graphic_console_init(NULL, 0, &no_ops, NULL);
114 }
115
116 static void puv3_init(MachineState *machine)
117 {
118 ram_addr_t ram_size = machine->ram_size;
119 const char *kernel_filename = machine->kernel_filename;
120 const char *initrd_filename = machine->initrd_filename;
121 CPUUniCore32State *env;
122 UniCore32CPU *cpu;
123
124 if (initrd_filename) {
125 error_report("Please use kernel built-in initramdisk");
126 exit(1);
127 }
128
129 cpu = UNICORE32_CPU(cpu_create(machine->cpu_type));
130 env = &cpu->env;
131
132 puv3_soc_init(env);
133 puv3_board_init(env, ram_size);
134 puv3_load_kernel(kernel_filename);
135 }
136
137 static void puv3_machine_init(MachineClass *mc)
138 {
139 mc->desc = "PKUnity Version-3 based on UniCore32";
140 mc->init = puv3_init;
141 mc->is_default = true;
142 mc->default_cpu_type = UNICORE32_CPU_TYPE_NAME("UniCore-II");
143 }
144
145 DEFINE_MACHINE("puv3", puv3_machine_init)