diff options
Diffstat (limited to 'xxx/inactive/acpi.c')
| -rw-r--r-- | xxx/inactive/acpi.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/xxx/inactive/acpi.c b/xxx/inactive/acpi.c deleted file mode 100644 index b42f628..0000000 --- a/xxx/inactive/acpi.c +++ /dev/null @@ -1,171 +0,0 @@ -// Advanced Configuration and Power Interface -// http://wiki.xomb.org/index.php?title=ACPI_Tables - -#define FOOLOS_MODULE_NAME "acpi" - -#include "lib/logger/log.h" -#include "lib/int/stdint.h" -#include "lib/bool/bool.h" -#include "lib/string/string.h" -#include "smp.h" - - -typedef struct acpi_rsdt_struct -{ - char sig[4]; - uint32_t length; - uint8_t revision; - uint8_t checksum; - char oemid[6]; - char oemtabid[8]; - uint32_t oemrevision; - uint32_t vendor; - uint32_t rev; -}acpi_rsdt; - -typedef struct aspi_rsdp_struct -{ - char sig[8]; //signature - uint8_t checksum; - char oem[6]; - uint8_t revision; - - uint32_t ptr_rsdt; - uint32_t length; - - uint64_t ptr_xsdt; //same info but with 64bit pointers (preferred) - uint8_t checksum_ext; - uint8_t reserved[3]; - -}acpi_rsdp; - -typedef struct -{ - char sig[4]; - uint32_t length; - uint8_t rev; - uint8_t checksum; - char oemid[6]; - char oemtableid[8]; - char oemrev[4]; - char creatorid[4]; - char creatorrev[4]; - uint32_t apic_local; - uint32_t flags; - -}acpi_madt; - -uint8_t *apci_get_next_entry(uint8_t *addr,smp_processors *procdata) -{ - - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_DEBUG,"Examining MADT Entry at 0x%08X",addr); - - if(*addr==0) - { - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"MADT Entry: LocalAPIC"); - // usable - if(addr[4]&1) - { - if(procdata->processors>=SMP_MAX_PROC){ - - panic(FOOLOS_MODULE_NAME,"we do not support that many processors. recompile with higher SMP_MAX_PROC."); - } - - procdata->local_apic_id[procdata->processors]=addr[3]; - procdata->processors++; - } - - } - else if(*addr==1) - { - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"MADT Entry: IO APIC"); - } - else if(*addr==2)log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"MADT Entry: Interrupt Source Override"); - else log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"MADT Entry: type:0x%X",*addr); - - return addr+addr[1]; -} - - -void acpi_check_madt(uint32_t *madt,smp_processors *procdata) -{ - acpi_madt *table=(acpi_madt *)*madt; - - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_DEBUG,"Looking for MADT Table at %08X.",table); - if(strcmp("APIC",table->sig,4)) - { - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Found MADT Table at 0x%08X",table); - uint8_t *end=(uint8_t *)table; - end+=table->length; - - uint8_t *entry=(uint8_t *)table; - entry+=sizeof(acpi_madt); - - procdata->local_apic_address=table->apic_local; - - while(entry<end) - { - entry=apci_get_next_entry(entry,procdata); - } - - - } -} - -void acpi_read_rsdt(acpi_rsdt *rsdt,smp_processors *procdata) -{ - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Reading RSDT Table at 0x%08X",rsdt); - - if(!strcmp("RSDT",rsdt->sig,4)) - panic(FOOLOS_MODULE_NAME,"Signature MISMATCH!"); - - int entries=(rsdt->length-sizeof(acpi_rsdt))/4; - uint32_t *first=(uint32_t *)rsdt; - first+=sizeof(acpi_rsdt)/4; - - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Entries: %d",entries); - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Looking for MADT Table"); - for(int i=0;i<entries;i++) - { - - acpi_check_madt(first,procdata); - first++; - } - -} - -// search for the RSDB table in -// 0x7ffff - 0x9ffff (max) -// 0xe0000 - 0xfffff - -bool acpi_find(smp_processors *procdata) -{ - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Looking for RSDP Table"); - char *search=(char *)0x9f000; //will be 16 bit aligned; - procdata->processors=0; - procdata->boot=0; - - while(search<=(char *)0xfffff) - { - if(strcmp("RSD PTR ",search,8)) // notice trailing space in "RSD PTR " - { - uint8_t checksum=0; - for(int i=0;i<20;i++) - checksum+=search[i]; - - if(checksum==0) - { - log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"RSDP Table found at 0x%08X",search); - acpi_rsdp *rsdp=(acpi_rsdp *)search; - acpi_read_rsdt(rsdp->ptr_rsdt,procdata); - return true; - } - } - - search++; - - if(search==0xa0000)search=0xe0000; - - } - return false; -} |