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/* 2004.12 yhlu add dual core support */
#include "cpu/amd/dualcore/dualcore_id.c"
#include <pc80/mc146818rtc.h>
#if CONFIG_HAVE_OPTION_TABLE
#include "option_table.h"
#endif
static inline unsigned get_core_num_in_bsp(unsigned nodeid)
{
uint32_t dword;
dword = pci_read_config32(PCI_DEV(0, 0x18+nodeid, 3), 0xe8);
dword >>= 12;
dword &= 3;
return dword;
}
static inline uint8_t set_apicid_cpuid_lo(void)
{
#if !CONFIG_K8_REV_F_SUPPORT
if(is_cpu_pre_e0()) return 0; // pre_e0 can not be set
#endif
// set the NB_CFG[54]=1; why the OS will be happy with that ???
msr_t msr;
msr = rdmsr(NB_CFG_MSR);
msr.hi |= (1<<(54-32)); // InitApicIdCpuIdLo
wrmsr(NB_CFG_MSR, msr);
return 1;
}
static inline void real_start_other_core(unsigned nodeid)
{
uint32_t dword;
// set PCI_DEV(0, 0x18+nodeid, 3), 0x44 bit 27 to redirect all MC4 accesses and error logging to core0
dword = pci_read_config32(PCI_DEV(0, 0x18+nodeid, 3), 0x44);
dword |= 1<<27; // NbMcaToMstCpuEn bit
pci_write_config32(PCI_DEV(0, 0x18+nodeid, 3), 0x44, dword);
// set PCI_DEV(0, 0x18+nodeid, 0), 0x68 bit 5 to start core1
dword = pci_read_config32(PCI_DEV(0, 0x18+nodeid, 0), 0x68);
dword |= 1<<5;
pci_write_config32(PCI_DEV(0, 0x18+nodeid, 0), 0x68, dword);
}
//it is running on core0 of node0
static inline void start_other_cores(void)
{
unsigned nodes;
unsigned nodeid;
if (read_option(multi_core, 0)) {
return; // disable multi_core
}
nodes = get_nodes();
for(nodeid=0; nodeid<nodes; nodeid++) {
if( get_core_num_in_bsp(nodeid) > 0) {
real_start_other_core(nodeid);
}
}
}
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