1 files changed, 245 insertions, 0 deletions
diff --git a/src/arch/i386/smp/mpspec.c b/src/arch/i386/smp/mpspec.c
new file mode 100644
index 0000000000..3bb5fa1985
--- /dev/null
+++ b/src/arch/i386/smp/mpspec.c
@@ -0,0 +1,245 @@
+#include <console/console.h>
+#include <cpu/cpu.h>
+#include <smp/start_stop.h>
+#include <arch/smp/mpspec.h>
+#include <string.h>
+#include <cpu/p5/cpuid.h>
+#include <cpu/p6/apic.h>
+
+unsigned char smp_compute_checksum(void *v, int len)
+{
+	unsigned char *bytes;
+	unsigned char checksum;
+	int i;
+	bytes = v;
+	checksum = 0;
+	for(i = 0; i < len; i++) {
+		checksum -= bytes[i];
+	}
+	return checksum;
+}
+
+void *smp_write_floating_table(unsigned long addr)
+{
+	struct intel_mp_floating *mf;
+	void *v;
+	
+	/* 16 byte align the table address */
+	addr += 15;
+	addr &= ~15;
+	v = (void *)addr;
+
+	mf = v;
+	mf->mpf_signature[0] = '_';
+	mf->mpf_signature[1] = 'M';
+	mf->mpf_signature[2] = 'P';
+	mf->mpf_signature[3] = '_';
+	mf->mpf_physptr = (unsigned long)(((char *)v) + SMP_FLOATING_TABLE_LEN);
+	mf->mpf_length = 1;
+	mf->mpf_specification = 4;
+	mf->mpf_checksum = 0;
+	mf->mpf_feature1 = 0;
+	mf->mpf_feature2 = 0;
+	mf->mpf_feature3 = 0;
+	mf->mpf_feature4 = 0;
+	mf->mpf_feature5 = 0;
+	mf->mpf_checksum = smp_compute_checksum(mf, mf->mpf_length*16);
+	return v;
+}
+
+void *smp_next_mpc_entry(struct mp_config_table *mc)
+{
+	void *v;
+	v = (void *)(((char *)mc) + mc->mpc_length);
+	return v;
+}
+static void smp_add_mpc_entry(struct mp_config_table *mc, unsigned length)
+{
+	mc->mpc_length += length;
+	mc->mpc_entry_count++;
+}
+
+void *smp_next_mpe_entry(struct mp_config_table *mc)
+{
+	void *v;
+	v = (void *)(((char *)mc) + mc->mpc_length + mc->mpe_length);
+	return v;
+}
+static void smp_add_mpe_entry(struct mp_config_table *mc, mpe_t mpe)
+{
+	mc->mpe_length += mpe->mpe_length;
+}
+
+void smp_write_processor(struct mp_config_table *mc,
+	unsigned char apicid, unsigned char apicver,
+	unsigned char cpuflag, unsigned int cpufeature,
+	unsigned int featureflag)
+{
+	struct mpc_config_processor *mpc;
+	mpc = smp_next_mpc_entry(mc);
+	memset(mpc, '\0', sizeof(*mpc));
+	mpc->mpc_type = MP_PROCESSOR;
+	mpc->mpc_apicid = apicid;
+	mpc->mpc_apicver = apicver;
+	mpc->mpc_cpuflag = cpuflag;
+	mpc->mpc_cpufeature = cpufeature;
+	mpc->mpc_featureflag = featureflag;
+	smp_add_mpc_entry(mc, sizeof(*mpc));
+}
+
+/* If we assume a symmetric processor configuration we can
+ * get all of the information we need to write the processor
+ * entry from the bootstrap processor.
+ * Plus I don't think linux really even cares.
+ * Having the proper apicid's in the table so the non-bootstrap
+ *  processors can be woken up should be enough.
+ */
+void smp_write_processors(struct mp_config_table *mc, 
+			unsigned long *processor_map)
+{
+	int i;
+	int processor_id;
+	unsigned apic_version;
+	unsigned cpu_features;
+	unsigned cpu_feature_flags;
+	int eax, ebx, ecx, edx;
+	processor_id = this_processors_id();
+	apic_version = apic_read(APIC_LVR) & 0xff;
+	cpuid(1, &eax, &ebx, &ecx, &edx);
+	cpu_features = eax;
+	cpu_feature_flags = edx;
+	for(i = 0; i < MAX_CPUS; i++) {
+		unsigned long cpu_apicid = initial_apicid[i];
+		unsigned long cpu_flag;
+		if(initial_apicid[i]==-1)
+			continue;
+		cpu_flag = MPC_CPU_ENABLED
+		if (processor_map[i] & CPU_BOOTPROCESSOR) {
+			cpu_flag |= MPC_CPU_BOOTPROCESSOR;
+		}
+		smp_write_processor(mc, cpu_apicid, apic_version,
+			cpu_flag, cpu_features, cpu_feature_flags
+		);
+	
+	}
+}
+
+void smp_write_bus(struct mp_config_table *mc,
+	unsigned char id, unsigned char *bustype)
+{
+	struct mpc_config_bus *mpc;
+	mpc = smp_next_mpc_entry(mc);
+	memset(mpc, '\0', sizeof(*mpc));
+	mpc->mpc_type = MP_BUS;
+	mpc->mpc_busid = id;
+	memcpy(mpc->mpc_bustype, bustype, sizeof(mpc->mpc_bustype));
+	smp_add_mpc_entry(mc, sizeof(*mpc));
+}
+
+void smp_write_ioapic(struct mp_config_table *mc,
+	unsigned char id, unsigned char ver, 
+	unsigned long apicaddr)
+{
+	struct mpc_config_ioapic *mpc;
+	mpc = smp_next_mpc_entry(mc);
+	memset(mpc, '\0', sizeof(*mpc));
+	mpc->mpc_type = MP_IOAPIC;
+	mpc->mpc_apicid = id;
+	mpc->mpc_apicver = ver;
+	mpc->mpc_flags = MPC_APIC_USABLE;
+	mpc->mpc_apicaddr = apicaddr;
+	smp_add_mpc_entry(mc, sizeof(*mpc));
+}
+
+void smp_write_intsrc(struct mp_config_table *mc,
+	unsigned char irqtype, unsigned short irqflag,
+	unsigned char srcbus, unsigned char srcbusirq,
+	unsigned char dstapic, unsigned char dstirq)
+{
+	struct mpc_config_intsrc *mpc;
+	mpc = smp_next_mpc_entry(mc);
+	memset(mpc, '\0', sizeof(*mpc));
+	mpc->mpc_type = MP_INTSRC;
+	mpc->mpc_irqtype = irqtype;
+	mpc->mpc_irqflag = irqflag;
+	mpc->mpc_srcbus = srcbus;
+	mpc->mpc_srcbusirq = srcbusirq;
+	mpc->mpc_dstapic = dstapic;
+	mpc->mpc_dstirq = dstirq;
+	smp_add_mpc_entry(mc, sizeof(*mpc));
+#if CONFIG_DEBUG_MPTABLE == 1
+	printk_info("add intsrc srcbus 0x%x srcbusirq 0x%x, dstapic 0x%x, dstirq 0x%x\n",
+				srcbus, srcbusirq, dstapic, dstirq);
+	hexdump(__FUNCTION__, mpc, sizeof(*mpc));
+#endif
+}
+
+
+void smp_write_lintsrc(struct mp_config_table *mc,
+	unsigned char irqtype, unsigned short irqflag,
+	unsigned char srcbusid, unsigned char srcbusirq,
+	unsigned char destapic, unsigned char destapiclint)
+{
+	struct mpc_config_lintsrc *mpc;
+	mpc = smp_next_mpc_entry(mc);
+	memset(mpc, '\0', sizeof(*mpc));
+	mpc->mpc_type = MP_LINTSRC;
+	mpc->mpc_irqtype = irqtype;
+	mpc->mpc_irqflag = irqflag;
+	mpc->mpc_srcbusid = srcbusid;
+	mpc->mpc_srcbusirq = srcbusirq;
+	mpc->mpc_destapic = destapic;
+	mpc->mpc_destapiclint = destapiclint;
+	smp_add_mpc_entry(mc, sizeof(*mpc));
+}
+
+void smp_write_address_space(struct mp_config_table *mc,
+	unsigned char busid, unsigned char address_type,
+	unsigned int address_base_low, unsigned int address_base_high,
+	unsigned int address_length_low, unsigned int address_length_high)
+{
+	struct mp_exten_system_address_space *mpe;
+	mpe = smp_next_mpe_entry(mc);
+	memset(mpe, '\0', sizeof(*mpe));
+	mpe->mpe_type = MPE_SYSTEM_ADDRESS_SPACE;
+	mpe->mpe_length = sizeof(*mpe);
+	mpe->mpe_busid = busid;
+	mpe->mpe_address_type = address_type;
+	mpe->mpe_address_base_low  = address_base_low;
+	mpe->mpe_address_base_high = address_base_high;
+	mpe->mpe_address_length_low  = address_length_low;
+	mpe->mpe_address_length_high = address_length_high;
+	smp_add_mpe_entry(mc, (mpe_t)mpe);
+}
+
+
+void smp_write_bus_hierarchy(struct mp_config_table *mc,
+	unsigned char busid, unsigned char bus_info,
+	unsigned char parent_busid)
+{
+	struct mp_exten_bus_hierarchy *mpe;
+	mpe = smp_next_mpe_entry(mc);
+	memset(mpe, '\0', sizeof(*mpe));
+	mpe->mpe_type = MPE_BUS_HIERARCHY;
+	mpe->mpe_length = sizeof(*mpe);
+	mpe->mpe_busid = busid;
+	mpe->mpe_bus_info = bus_info;
+	mpe->mpe_parent_busid = parent_busid;
+	smp_add_mpe_entry(mc, (mpe_t)mpe);
+}
+
+void smp_write_compatibility_address_space(struct mp_config_table *mc,
+	unsigned char busid, unsigned char address_modifier,
+	unsigned int range_list)
+{
+	struct mp_exten_compatibility_address_space *mpe;
+	mpe = smp_next_mpe_entry(mc);
+	memset(mpe, '\0', sizeof(*mpe));
+	mpe->mpe_type = MPE_COMPATIBILITY_ADDRESS_SPACE;
+	mpe->mpe_length = sizeof(*mpe);
+	mpe->mpe_busid = busid;
+	mpe->mpe_address_modifier = address_modifier;
+	mpe->mpe_range_list = range_list;
+	smp_add_mpe_entry(mc, (mpe_t)mpe);
+}
+