Revision: linuxbios@linuxbios.org--devel/freebios--devel--2.0--patch-34

Creator:  Yinghai Lu <yhlu@tyan.com>

AMD D0/E0 Opteron new mem mapping support, AMD E Opteron mem hole support,AMD K8 Four Ranks DIMM support


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1950 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 45 insertions, 0 deletions

diff --git a/src/cpu/amd/dualcore/dualcore_id.c b/src/cpu/amd/dualcore/dualcore_id.c
new file mode 100644
index 0000000000..feab682851
--- /dev/null
+++ b/src/cpu/amd/dualcore/dualcore_id.c
@@ -0,0 +1,45 @@
+/* 2004.12 yhlu add dual core support */
+
+#include <arch/cpu.h>
+#include "cpu/amd/model_fxx/model_fxx_msr.h"
+
+static inline unsigned int read_nb_cfg_54(void)
+{
+        msr_t msr;
+        msr = rdmsr(NB_CFG_MSR);
+        return ( ( msr.hi >> (54-32)) & 1);
+}
+
+struct node_core_id {
+	unsigned nodeid;
+	unsigned coreid;
+};
+
+static inline struct node_core_id get_node_core_id(unsigned nb_cfg_54) {
+	struct node_core_id id;
+	//    get the apicid via cpuid(1) ebx[27:24]
+	if( nb_cfg_54) {
+                //   when NB_CFG[54] is set, nodid = ebx[27:25], coreid = ebx[24]
+                id.coreid = (cpuid_ebx(1) >> 24) & 0xf;
+                id.nodeid = (id.coreid>>1);
+                id.coreid &= 1;
+        } 
+	else 
+	{
+                // when NB_CFG[54] is clear, nodeid = ebx[26:24], coreid = ebx[27]
+                id.nodeid = (cpuid_ebx(1) >> 24) & 0xf;
+                id.coreid = (id.nodeid>>3);
+                id.nodeid &= 7;
+	}
+	return id;
+}
+
+static inline unsigned get_core_num(void)
+{
+	return (cpuid_ecx(0x80000008) & 0xff);
+}
+
+static inline struct node_core_id get_node_core_id_x(void) {
+	return get_node_core_id( read_nb_cfg_54() ); 
+}
+