Spell "unkown" correctly in error_report() arguments
[qemu.git] / hw / lm32_sys.c
blobe5ff962f4362a223522ce74e73578a872e3321ff
1 /*
2 * QEMU model of the LatticeMico32 system control block.
4 * Copyright (c) 2010 Michael Walle <michael@walle.cc>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 * This model is mainly intended for testing purposes and doesn't fit to any
22 * real hardware. On the one hand it provides a control register (R_CTRL) on
23 * the other hand it supports the lm32 tests.
25 * A write to the control register causes a system shutdown.
26 * Tests first write the pointer to a test name to the test name register
27 * (R_TESTNAME) and then write a zero to the pass/fail register (R_PASSFAIL) if
28 * the test is passed or any non-zero value to it if the test is failed.
31 #include "hw.h"
32 #include "sysbus.h"
33 #include "trace.h"
34 #include "qemu-log.h"
35 #include "qemu-error.h"
36 #include "sysemu.h"
37 #include "qemu-log.h"
39 enum {
40 R_CTRL = 0,
41 R_PASSFAIL,
42 R_TESTNAME,
43 R_MAX
46 #define MAX_TESTNAME_LEN 16
48 struct LM32SysState {
49 SysBusDevice busdev;
50 uint32_t base;
51 uint32_t regs[R_MAX];
52 uint8_t testname[MAX_TESTNAME_LEN];
54 typedef struct LM32SysState LM32SysState;
56 static void copy_testname(LM32SysState *s)
58 cpu_physical_memory_read(s->regs[R_TESTNAME], s->testname,
59 MAX_TESTNAME_LEN);
60 s->testname[MAX_TESTNAME_LEN - 1] = '\0';
63 static void sys_write(void *opaque, target_phys_addr_t addr, uint32_t value)
65 LM32SysState *s = opaque;
66 char *testname;
68 trace_lm32_sys_memory_write(addr, value);
70 addr >>= 2;
71 switch (addr) {
72 case R_CTRL:
73 qemu_system_shutdown_request();
74 break;
75 case R_PASSFAIL:
76 s->regs[addr] = value;
77 testname = (char *)s->testname;
78 qemu_log("TC %-16s %s\n", testname, (value) ? "FAILED" : "OK");
79 break;
80 case R_TESTNAME:
81 s->regs[addr] = value;
82 copy_testname(s);
83 break;
85 default:
86 error_report("lm32_sys: write access to unknown register 0x"
87 TARGET_FMT_plx, addr << 2);
88 break;
92 static CPUReadMemoryFunc * const sys_read_fn[] = {
93 NULL,
94 NULL,
95 NULL,
98 static CPUWriteMemoryFunc * const sys_write_fn[] = {
99 NULL,
100 NULL,
101 &sys_write,
104 static void sys_reset(DeviceState *d)
106 LM32SysState *s = container_of(d, LM32SysState, busdev.qdev);
107 int i;
109 for (i = 0; i < R_MAX; i++) {
110 s->regs[i] = 0;
112 memset(s->testname, 0, MAX_TESTNAME_LEN);
115 static int lm32_sys_init(SysBusDevice *dev)
117 LM32SysState *s = FROM_SYSBUS(typeof(*s), dev);
118 int sys_regs;
120 sys_regs = cpu_register_io_memory(sys_read_fn, sys_write_fn, s,
121 DEVICE_NATIVE_ENDIAN);
122 sysbus_init_mmio(dev, R_MAX * 4, sys_regs);
124 /* Note: This device is not created in the board initialization,
125 * instead it has to be added with the -device parameter. Therefore,
126 * the device maps itself. */
127 sysbus_mmio_map(dev, 0, s->base);
129 return 0;
132 static const VMStateDescription vmstate_lm32_sys = {
133 .name = "lm32-sys",
134 .version_id = 1,
135 .minimum_version_id = 1,
136 .minimum_version_id_old = 1,
137 .fields = (VMStateField[]) {
138 VMSTATE_UINT32_ARRAY(regs, LM32SysState, R_MAX),
139 VMSTATE_BUFFER(testname, LM32SysState),
140 VMSTATE_END_OF_LIST()
144 static SysBusDeviceInfo lm32_sys_info = {
145 .init = lm32_sys_init,
146 .qdev.name = "lm32-sys",
147 .qdev.size = sizeof(LM32SysState),
148 .qdev.vmsd = &vmstate_lm32_sys,
149 .qdev.reset = sys_reset,
150 .qdev.props = (Property[]) {
151 DEFINE_PROP_UINT32("base", LM32SysState, base, 0xffff0000),
152 DEFINE_PROP_END_OF_LIST(),
156 static void lm32_sys_register(void)
158 sysbus_register_withprop(&lm32_sys_info);
161 device_init(lm32_sys_register)