Revision 563c2bf3 hw/integratorcp.c
| b/hw/integratorcp.c | ||
|---|---|---|
| 21 | 21 |
MemoryRegion iomem; |
| 22 | 22 |
uint32_t memsz; |
| 23 | 23 |
MemoryRegion flash; |
| 24 |
bool flash_mapped; |
|
| 25 | 24 |
uint32_t cm_osc; |
| 26 | 25 |
uint32_t cm_ctrl; |
| 27 | 26 |
uint32_t cm_lock; |
| ... | ... | |
| 110 | 109 |
} |
| 111 | 110 |
} |
| 112 | 111 |
|
| 113 |
static void integratorcm_do_remap(integratorcm_state *s, int flash)
|
|
| 112 |
static void integratorcm_do_remap(integratorcm_state *s) |
|
| 114 | 113 |
{
|
| 115 |
if (!flash) {
|
|
| 116 |
if (s->flash_mapped) {
|
|
| 117 |
sysbus_del_memory(&s->busdev, &s->flash); |
|
| 118 |
s->flash_mapped = false; |
|
| 119 |
} |
|
| 120 |
} else {
|
|
| 121 |
if (!s->flash_mapped) {
|
|
| 122 |
sysbus_add_memory_overlap(&s->busdev, 0, &s->flash, 1); |
|
| 123 |
s->flash_mapped = true; |
|
| 124 |
} |
|
| 125 |
} |
|
| 126 |
//??? tlb_flush (cpu_single_env, 1); |
|
| 114 |
/* Sync memory region state with CM_CTRL REMAP bit: |
|
| 115 |
* bit 0 => flash at address 0; bit 1 => RAM |
|
| 116 |
*/ |
|
| 117 |
memory_region_set_enabled(&s->flash, !(s->cm_ctrl & 4)); |
|
| 127 | 118 |
} |
| 128 | 119 |
|
| 129 | 120 |
static void integratorcm_set_ctrl(integratorcm_state *s, uint32_t value) |
| ... | ... | |
| 131 | 122 |
if (value & 8) {
|
| 132 | 123 |
qemu_system_reset_request(); |
| 133 | 124 |
} |
| 134 |
if ((s->cm_ctrl ^ value) & 4) {
|
|
| 135 |
integratorcm_do_remap(s, (value & 4) == 0); |
|
| 136 |
} |
|
| 137 | 125 |
if ((s->cm_ctrl ^ value) & 1) {
|
| 138 | 126 |
/* (value & 1) != 0 means the green "MISC LED" is lit. |
| 139 | 127 |
* We don't have any nice place to display LEDs. printf is a bad |
| ... | ... | |
| 143 | 131 |
} |
| 144 | 132 |
/* Note that the RESET bit [3] always reads as zero */ |
| 145 | 133 |
s->cm_ctrl = (s->cm_ctrl & ~5) | (value & 5); |
| 134 |
integratorcm_do_remap(s); |
|
| 146 | 135 |
} |
| 147 | 136 |
|
| 148 | 137 |
static void integratorcm_update(integratorcm_state *s) |
| ... | ... | |
| 263 | 252 |
s->cm_init = 0x00000112; |
| 264 | 253 |
memory_region_init_ram(&s->flash, "integrator.flash", 0x100000); |
| 265 | 254 |
vmstate_register_ram_global(&s->flash); |
| 266 |
s->flash_mapped = false; |
|
| 267 | 255 |
|
| 268 | 256 |
memory_region_init_io(&s->iomem, &integratorcm_ops, s, |
| 269 | 257 |
"integratorcm", 0x00800000); |
| 270 | 258 |
sysbus_init_mmio(dev, &s->iomem); |
| 271 | 259 |
|
| 272 |
integratorcm_do_remap(s, 1);
|
|
| 260 |
integratorcm_do_remap(s); |
|
| 273 | 261 |
/* ??? Save/restore. */ |
| 274 | 262 |
return 0; |
| 275 | 263 |
} |
Also available in: Unified diff