1 files changed, 410 insertions, 0 deletions
diff --git a/roms/u-boot/arch/x86/lib/mpspec.c b/roms/u-boot/arch/x86/lib/mpspec.c
new file mode 100644
index 000000000..8e97d9ff3
--- /dev/null
+++ b/roms/u-boot/arch/x86/lib/mpspec.c
@@ -0,0 +1,410 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * Adapted from coreboot src/arch/x86/boot/mpspec.c
+ */
+
+#include <common.h>
+#include <cpu.h>
+#include <dm.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <log.h>
+#include <asm/cpu.h>
+#include <asm/global_data.h>
+#include <asm/irq.h>
+#include <asm/ioapic.h>
+#include <asm/lapic.h>
+#include <asm/mpspec.h>
+#include <asm/tables.h>
+#include <dm/uclass-internal.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static bool isa_irq_occupied[16];
+
+struct mp_config_table *mp_write_floating_table(struct mp_floating_table *mf)
+{
+	ulong mc;
+
+	memcpy(mf->mpf_signature, MPF_SIGNATURE, 4);
+	mf->mpf_physptr = (ulong)mf + sizeof(struct mp_floating_table);
+	mf->mpf_length = 1;
+	mf->mpf_spec = MPSPEC_V14;
+	mf->mpf_checksum = 0;
+	/* We don't use the default configuration table */
+	mf->mpf_feature1 = 0;
+	/* Indicate that virtual wire mode is always implemented */
+	mf->mpf_feature2 = 0;
+	mf->mpf_feature3 = 0;
+	mf->mpf_feature4 = 0;
+	mf->mpf_feature5 = 0;
+	mf->mpf_checksum = table_compute_checksum(mf, mf->mpf_length * 16);
+
+	mc = (ulong)mf + sizeof(struct mp_floating_table);
+	return (struct mp_config_table *)mc;
+}
+
+void mp_config_table_init(struct mp_config_table *mc)
+{
+	memcpy(mc->mpc_signature, MPC_SIGNATURE, 4);
+	mc->mpc_length = sizeof(struct mp_config_table);
+	mc->mpc_spec = MPSPEC_V14;
+	mc->mpc_checksum = 0;
+	mc->mpc_oemptr = 0;
+	mc->mpc_oemsize = 0;
+	mc->mpc_entry_count = 0;
+	mc->mpc_lapic = LAPIC_DEFAULT_BASE;
+	mc->mpe_length = 0;
+	mc->mpe_checksum = 0;
+	mc->reserved = 0;
+
+	/* The oem/product id fields are exactly 8/12 bytes long */
+	table_fill_string(mc->mpc_oem, CONFIG_SYS_VENDOR, 8, ' ');
+	table_fill_string(mc->mpc_product, CONFIG_SYS_BOARD, 12, ' ');
+}
+
+void mp_write_processor(struct mp_config_table *mc)
+{
+	struct mpc_config_processor *mpc;
+	struct udevice *dev;
+	u8 boot_apicid, apicver;
+	u32 cpusignature, cpufeature;
+	struct cpuid_result result;
+
+	boot_apicid = lapicid();
+	apicver = lapic_read(LAPIC_LVR) & 0xff;
+	result = cpuid(1);
+	cpusignature = result.eax;
+	cpufeature = result.edx;
+
+	for (uclass_find_first_device(UCLASS_CPU, &dev);
+	     dev;
+	     uclass_find_next_device(&dev)) {
+		struct cpu_plat *plat = dev_get_parent_plat(dev);
+		u8 cpuflag = MPC_CPU_EN;
+
+		if (!device_active(dev))
+			continue;
+
+		mpc = (struct mpc_config_processor *)mp_next_mpc_entry(mc);
+		mpc->mpc_type = MP_PROCESSOR;
+		mpc->mpc_apicid = plat->cpu_id;
+		mpc->mpc_apicver = apicver;
+		if (boot_apicid == plat->cpu_id)
+			cpuflag |= MPC_CPU_BP;
+		mpc->mpc_cpuflag = cpuflag;
+		mpc->mpc_cpusignature = cpusignature;
+		mpc->mpc_cpufeature = cpufeature;
+		mpc->mpc_reserved[0] = 0;
+		mpc->mpc_reserved[1] = 0;
+		mp_add_mpc_entry(mc, sizeof(*mpc));
+	}
+}
+
+void mp_write_bus(struct mp_config_table *mc, int id, const char *bustype)
+{
+	struct mpc_config_bus *mpc;
+
+	mpc = (struct mpc_config_bus *)mp_next_mpc_entry(mc);
+	mpc->mpc_type = MP_BUS;
+	mpc->mpc_busid = id;
+	memcpy(mpc->mpc_bustype, bustype, 6);
+	mp_add_mpc_entry(mc, sizeof(*mpc));
+}
+
+void mp_write_ioapic(struct mp_config_table *mc, int id, int ver, u32 apicaddr)
+{
+	struct mpc_config_ioapic *mpc;
+
+	mpc = (struct mpc_config_ioapic *)mp_next_mpc_entry(mc);
+	mpc->mpc_type = MP_IOAPIC;
+	mpc->mpc_apicid = id;
+	mpc->mpc_apicver = ver;
+	mpc->mpc_flags = MPC_APIC_USABLE;
+	mpc->mpc_apicaddr = apicaddr;
+	mp_add_mpc_entry(mc, sizeof(*mpc));
+}
+
+void mp_write_intsrc(struct mp_config_table *mc, int irqtype, int irqflag,
+		     int srcbus, int srcbusirq, int dstapic, int dstirq)
+{
+	struct mpc_config_intsrc *mpc;
+
+	mpc = (struct mpc_config_intsrc *)mp_next_mpc_entry(mc);
+	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;
+	mp_add_mpc_entry(mc, sizeof(*mpc));
+}
+
+void mp_write_pci_intsrc(struct mp_config_table *mc, int irqtype,
+			 int srcbus, int dev, int pin, int dstapic, int dstirq)
+{
+	u8 srcbusirq = (dev << 2) | (pin - 1);
+
+	mp_write_intsrc(mc, irqtype, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_LOW,
+			srcbus, srcbusirq, dstapic, dstirq);
+}
+
+void mp_write_lintsrc(struct mp_config_table *mc, int irqtype, int irqflag,
+		      int srcbus, int srcbusirq, int destapic, int destlint)
+{
+	struct mpc_config_lintsrc *mpc;
+
+	mpc = (struct mpc_config_lintsrc *)mp_next_mpc_entry(mc);
+	mpc->mpc_type = MP_LINTSRC;
+	mpc->mpc_irqtype = irqtype;
+	mpc->mpc_irqflag = irqflag;
+	mpc->mpc_srcbusid = srcbus;
+	mpc->mpc_srcbusirq = srcbusirq;
+	mpc->mpc_destapic = destapic;
+	mpc->mpc_destlint = destlint;
+	mp_add_mpc_entry(mc, sizeof(*mpc));
+}
+
+void mp_write_address_space(struct mp_config_table *mc,
+			    int busid, int addr_type,
+			    u32 addr_base_low, u32 addr_base_high,
+			    u32 addr_length_low, u32 addr_length_high)
+{
+	struct mp_ext_system_address_space *mpe;
+
+	mpe = (struct mp_ext_system_address_space *)mp_next_mpe_entry(mc);
+	mpe->mpe_type = MPE_SYSTEM_ADDRESS_SPACE;
+	mpe->mpe_length = sizeof(*mpe);
+	mpe->mpe_busid = busid;
+	mpe->mpe_addr_type = addr_type;
+	mpe->mpe_addr_base_low = addr_base_low;
+	mpe->mpe_addr_base_high = addr_base_high;
+	mpe->mpe_addr_length_low = addr_length_low;
+	mpe->mpe_addr_length_high = addr_length_high;
+	mp_add_mpe_entry(mc, (struct mp_ext_config *)mpe);
+}
+
+void mp_write_bus_hierarchy(struct mp_config_table *mc,
+			    int busid, int bus_info, int parent_busid)
+{
+	struct mp_ext_bus_hierarchy *mpe;
+
+	mpe = (struct mp_ext_bus_hierarchy *)mp_next_mpe_entry(mc);
+	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;
+	mpe->reserved[0] = 0;
+	mpe->reserved[1] = 0;
+	mpe->reserved[2] = 0;
+	mp_add_mpe_entry(mc, (struct mp_ext_config *)mpe);
+}
+
+void mp_write_compat_address_space(struct mp_config_table *mc, int busid,
+				   int addr_modifier, u32 range_list)
+{
+	struct mp_ext_compat_address_space *mpe;
+
+	mpe = (struct mp_ext_compat_address_space *)mp_next_mpe_entry(mc);
+	mpe->mpe_type = MPE_COMPAT_ADDRESS_SPACE;
+	mpe->mpe_length = sizeof(*mpe);
+	mpe->mpe_busid = busid;
+	mpe->mpe_addr_modifier = addr_modifier;
+	mpe->mpe_range_list = range_list;
+	mp_add_mpe_entry(mc, (struct mp_ext_config *)mpe);
+}
+
+u32 mptable_finalize(struct mp_config_table *mc)
+{
+	ulong end;
+
+	mc->mpe_checksum = table_compute_checksum((void *)mp_next_mpc_entry(mc),
+						  mc->mpe_length);
+	mc->mpc_checksum = table_compute_checksum(mc, mc->mpc_length);
+	end = mp_next_mpe_entry(mc);
+
+	debug("Write the MP table at: %lx - %lx\n", (ulong)mc, end);
+
+	return end;
+}
+
+static void mptable_add_isa_interrupts(struct mp_config_table *mc, int bus_isa,
+				       int apicid, int external_int2)
+{
+	int i;
+
+	mp_write_intsrc(mc, external_int2 ? MP_INT : MP_EXTINT,
+			MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH,
+			bus_isa, 0, apicid, 0);
+	mp_write_intsrc(mc, MP_INT, MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH,
+			bus_isa, 1, apicid, 1);
+	mp_write_intsrc(mc, external_int2 ? MP_EXTINT : MP_INT,
+			MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH,
+			bus_isa, 0, apicid, 2);
+
+	for (i = 3; i < 16; i++) {
+		/*
+		 * Do not write ISA interrupt entry if it is already occupied
+		 * by the platform devices.
+		 */
+		if (isa_irq_occupied[i])
+			continue;
+
+		mp_write_intsrc(mc, MP_INT,
+				MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH,
+				bus_isa, i, apicid, i);
+	}
+}
+
+/*
+ * Check duplicated I/O interrupt assignment table entry, to make sure
+ * there is only one entry with the given bus, device and interrupt pin.
+ */
+static bool check_dup_entry(struct mpc_config_intsrc *intsrc_base,
+			    int entry_num, int bus, int device, int pin)
+{
+	struct mpc_config_intsrc *intsrc = intsrc_base;
+	int i;
+
+	for (i = 0; i < entry_num; i++) {
+		if (intsrc->mpc_srcbus == bus &&
+		    intsrc->mpc_srcbusirq == ((device << 2) | (pin - 1)))
+			break;
+		intsrc++;
+	}
+
+	return (i == entry_num) ? false : true;
+}
+
+/* TODO: move this to driver model */
+__weak int mp_determine_pci_dstirq(int bus, int dev, int func, int pirq)
+{
+	/* PIRQ[A-H] are connected to I/O APIC INTPIN#16-23 */
+	return pirq + 16;
+}
+
+static int mptable_add_intsrc(struct mp_config_table *mc,
+			      int bus_isa, int apicid)
+{
+	struct mpc_config_intsrc *intsrc_base;
+	int intsrc_entries = 0;
+	const void *blob = gd->fdt_blob;
+	struct udevice *dev;
+	int len, count;
+	const u32 *cell;
+	int i, ret;
+
+	ret = uclass_first_device_err(UCLASS_IRQ, &dev);
+	if (ret && ret != -ENODEV) {
+		debug("%s: Cannot find irq router node\n", __func__);
+		return ret;
+	}
+
+	/* Get I/O interrupt information from device tree */
+	cell = fdt_getprop(blob, dev_of_offset(dev), "intel,pirq-routing",
+			   &len);
+	if (!cell)
+		return -ENOENT;
+
+	if ((len % sizeof(struct pirq_routing)) == 0)
+		count = len / sizeof(struct pirq_routing);
+	else
+		return -EINVAL;
+
+	intsrc_base = (struct mpc_config_intsrc *)mp_next_mpc_entry(mc);
+
+	for (i = 0; i < count; i++) {
+		struct pirq_routing pr;
+		int bus, dev, func;
+		int dstirq;
+
+		pr.bdf = fdt_addr_to_cpu(cell[0]);
+		pr.pin = fdt_addr_to_cpu(cell[1]);
+		pr.pirq = fdt_addr_to_cpu(cell[2]);
+		bus = PCI_BUS(pr.bdf);
+		dev = PCI_DEV(pr.bdf);
+		func = PCI_FUNC(pr.bdf);
+
+		if (check_dup_entry(intsrc_base, intsrc_entries,
+				    bus, dev, pr.pin)) {
+			debug("found entry for bus %d device %d INT%c, skipping\n",
+			      bus, dev, 'A' + pr.pin - 1);
+			cell += sizeof(struct pirq_routing) / sizeof(u32);
+			continue;
+		}
+
+		dstirq = mp_determine_pci_dstirq(bus, dev, func, pr.pirq);
+		/*
+		 * For PIRQ which is connected to I/O APIC interrupt pin#0-15,
+		 * mark it as occupied so that we can skip it later.
+		 */
+		if (dstirq < 16)
+			isa_irq_occupied[dstirq] = true;
+		mp_write_pci_intsrc(mc, MP_INT, bus, dev, pr.pin,
+				    apicid, dstirq);
+		intsrc_entries++;
+		cell += sizeof(struct pirq_routing) / sizeof(u32);
+	}
+
+	/* Legacy Interrupts */
+	debug("Writing ISA IRQs\n");
+	mptable_add_isa_interrupts(mc, bus_isa, apicid, 0);
+
+	return 0;
+}
+
+static void mptable_add_lintsrc(struct mp_config_table *mc, int bus_isa)
+{
+	mp_write_lintsrc(mc, MP_EXTINT,
+			 MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH,
+			 bus_isa, 0, MP_APIC_ALL, 0);
+	mp_write_lintsrc(mc, MP_NMI,
+			 MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH,
+			 bus_isa, 0, MP_APIC_ALL, 1);
+}
+
+ulong write_mp_table(ulong addr)
+{
+	struct mp_config_table *mc;
+	int ioapic_id, ioapic_ver;
+	int bus_isa = 0xff;
+	int ret;
+	ulong end;
+
+	/* 16 byte align the table address */
+	addr = ALIGN(addr, 16);
+
+	/* Write floating table */
+	mc = mp_write_floating_table((struct mp_floating_table *)addr);
+
+	/* Write configuration table header */
+	mp_config_table_init(mc);
+
+	/* Write processor entry */
+	mp_write_processor(mc);
+
+	/* Write bus entry */
+	mp_write_bus(mc, bus_isa, BUSTYPE_ISA);
+
+	/* Write I/O APIC entry */
+	ioapic_id = io_apic_read(IO_APIC_ID) >> 24;
+	ioapic_ver = io_apic_read(IO_APIC_VER) & 0xff;
+	mp_write_ioapic(mc, ioapic_id, ioapic_ver, IO_APIC_ADDR);
+
+	/* Write I/O interrupt assignment entry */
+	ret = mptable_add_intsrc(mc, bus_isa, ioapic_id);
+	if (ret)
+		debug("Failed to write I/O interrupt assignment table\n");
+
+	/* Write local interrupt assignment entry */
+	mptable_add_lintsrc(mc, bus_isa);
+
+	/* Finalize the MP table */
+	end = mptable_finalize(mc);
+
+	return end;
+}