| 39,6 → 39,7 |
|---|
| #include <string.h> |
| |
| bootinfo_t bootinfo; |
| |
| component_t components[COMPONENTS]; |
| |
| char *release = RELEASE; |
| 55,6 → 56,15 |
|---|
| char *timestamp = ""; |
| #endif |
| |
| /** UltraSPARC subarchitecture - 1 for US, 3 for US3 */ |
| uint8_t subarchitecture; |
| |
| /** |
| * mask of the MID field inside the ICBUS_CONFIG register shifted by |
| * MID_SHIFT bits to the right |
| */ |
| uint16_t mid_mask; |
| |
| /** Print version information. */ |
| static void version_print(void) |
| { |
| 63,6 → 73,39 |
|---|
| release, revision, timestamp); |
| } |
| |
| /* the lowest ID (read from the VER register) of some US3 CPU model */ |
| #define FIRST_US3_CPU 0x14 |
| |
| /* the greatest ID (read from the VER register) of some US3 CPU model */ |
| #define LAST_US3_CPU 0x19 |
| |
| /* UltraSPARC IIIi processor implementation code */ |
| #define US_IIIi_CODE 0x15 |
| |
| /** |
| * Sets the global variables "subarchitecture" and "mid_mask" to |
| * correct values. |
| */ |
| static void detect_subarchitecture(void) |
| { |
| uint64_t v; |
| asm volatile ("rdpr %%ver, %0\n" : "=r" (v)); |
| |
| v = (v << 16) >> 48; |
| if ((v >= FIRST_US3_CPU) && (v <= LAST_US3_CPU)) { |
| subarchitecture = SUBARCH_US3; |
| if (v == US_IIIi_CODE) |
| mid_mask = (1 << 5) - 1; |
| else |
| mid_mask = (1 << 10) - 1; |
| } else if (v < FIRST_US3_CPU) { |
| subarchitecture = SUBARCH_US; |
| mid_mask = (1 << 5) - 1; |
| } else { |
| printf("\nThis CPU is not supported by HelenOS."); |
| } |
| } |
| |
| void bootstrap(void) |
| { |
| void *base = (void *) KERNEL_VIRTUAL_ADDRESS; |
| 72,6 → 115,7 |
|---|
| |
| version_print(); |
| |
| detect_subarchitecture(); |
| init_components(components); |
| |
| if (!ofw_get_physmem_start(&bootinfo.physmem_start)) { |
| 83,7 → 127,7 |
|---|
| printf("Error: unable to get memory map, halting.\n"); |
| halt(); |
| } |
| |
| |
| if (bootinfo.memmap.total == 0) { |
| printf("Error: no memory detected, halting.\n"); |
| halt(); |