Revision 86f25c7c hw/ds1225y.c
| b/hw/ds1225y.c | ||
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| 33 | 33 |
uint32_t chip_size; |
| 34 | 34 |
QEMUFile *file; |
| 35 | 35 |
uint8_t *contents; |
| 36 |
uint8_t protection; |
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| 37 | 36 |
} ds1225y_t; |
| 38 | 37 |
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| 39 | 38 |
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| ... | ... | |
| 98 | 97 |
nvram_writeb(opaque, addr + 3, (val >> 24) & 0xff); |
| 99 | 98 |
} |
| 100 | 99 |
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static void nvram_writeb_protected (void *opaque, target_phys_addr_t addr, uint32_t val) |
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{
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ds1225y_t *s = opaque; |
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if (s->protection != 7) {
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#ifdef DEBUG_NVRAM |
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printf("nvram: prevent write of 0x%x at " TARGET_FMT_lx "\n", val, addr);
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#endif |
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return; |
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} |
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nvram_writeb(opaque, addr, val); |
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} |
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static void nvram_writew_protected (void *opaque, target_phys_addr_t addr, uint32_t val) |
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{
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nvram_writeb_protected(opaque, addr, val & 0xff); |
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nvram_writeb_protected(opaque, addr + 1, (val >> 8) & 0xff); |
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} |
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static void nvram_writel_protected (void *opaque, target_phys_addr_t addr, uint32_t val) |
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{
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nvram_writeb_protected(opaque, addr, val & 0xff); |
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nvram_writeb_protected(opaque, addr + 1, (val >> 8) & 0xff); |
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nvram_writeb_protected(opaque, addr + 2, (val >> 16) & 0xff); |
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nvram_writeb_protected(opaque, addr + 3, (val >> 24) & 0xff); |
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} |
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| 129 | 100 |
static CPUReadMemoryFunc * const nvram_read[] = {
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| 130 | 101 |
&nvram_readb, |
| 131 | 102 |
&nvram_readw, |
| ... | ... | |
| 138 | 109 |
&nvram_writel, |
| 139 | 110 |
}; |
| 140 | 111 |
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static CPUWriteMemoryFunc * const nvram_write_protected[] = {
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&nvram_writeb_protected, |
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&nvram_writew_protected, |
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&nvram_writel_protected, |
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}; |
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| 147 | 112 |
/* Initialisation routine */ |
| 148 | 113 |
void *ds1225y_init(target_phys_addr_t mem_base, const char *filename) |
| 149 | 114 |
{
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| 150 | 115 |
ds1225y_t *s; |
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int mem_indexRW, mem_indexRP;
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int mem_indexRW; |
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QEMUFile *file; |
| 153 | 118 |
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| 154 | 119 |
s = qemu_mallocz(sizeof(ds1225y_t)); |
| 155 | 120 |
s->chip_size = 0x2000; /* Fixed for ds1225y chip: 8 KiB */ |
| 156 | 121 |
s->contents = qemu_mallocz(s->chip_size); |
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s->protection = 7; |
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| 158 | 122 |
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| 159 | 123 |
/* Read current file */ |
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file = qemu_fopen(filename, "rb"); |
| ... | ... | |
| 174 | 138 |
mem_indexRW = cpu_register_io_memory(nvram_read, nvram_write, s, |
| 175 | 139 |
DEVICE_NATIVE_ENDIAN); |
| 176 | 140 |
cpu_register_physical_memory(mem_base, s->chip_size, mem_indexRW); |
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/* Read/write protected memory */ |
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mem_indexRP = cpu_register_io_memory(nvram_read, nvram_write_protected, s, |
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DEVICE_NATIVE_ENDIAN); |
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cpu_register_physical_memory(mem_base + s->chip_size, s->chip_size, mem_indexRP); |
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| 181 | 141 |
return s; |
| 182 | 142 |
} |
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