Revert "mb/aopen/dxplplusu: Remove board"

This reverts commit eb76a455cd39ec59b7f2ba28baeec9538befd59e
and applies minor fixes to make it build again.

PARALLEL_MP was working prior to board removal and no
relevant SMI handlers were implemented. So NO_SMM choice
is now selected.

Change-Id: Ia1cd02278240d1b5d006fb2a7730d3d86390f85b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69339
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

3 files changed, 79 insertions, 0 deletions

diff --git a/src/cpu/intel/model_f2x/Kconfig b/src/cpu/intel/model_f2x/Kconfig
new file mode 100644
index 0000000000..999ea4d386
--- /dev/null
+++ b/src/cpu/intel/model_f2x/Kconfig
@@ -0,0 +1,7 @@
+config CPU_INTEL_MODEL_F2X
+	bool
+	select ARCH_X86
+	select SUPPORT_CPU_UCODE_IN_CBFS
+	select CPU_INTEL_COMMON
+	select SSE2
+	select NO_SMM
diff --git a/src/cpu/intel/model_f2x/Makefile.inc b/src/cpu/intel/model_f2x/Makefile.inc
new file mode 100644
index 0000000000..5d60d21eda
--- /dev/null
+++ b/src/cpu/intel/model_f2x/Makefile.inc
@@ -0,0 +1,5 @@
+subdirs-y += ../common
+
+ramstage-y += model_f2x_init.c
+
+cpu_microcode_bins += $(wildcard 3rdparty/intel-microcode/intel-ucode/0f-02-*)
diff --git a/src/cpu/intel/model_f2x/model_f2x_init.c b/src/cpu/intel/model_f2x/model_f2x_init.c
new file mode 100644
index 0000000000..a228229371
--- /dev/null
+++ b/src/cpu/intel/model_f2x/model_f2x_init.c
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/device.h>
+#include <cpu/cpu.h>
+#include <cpu/x86/mp.h>
+#include <cpu/x86/mtrr.h>
+#include <cpu/intel/microcode.h>
+#include <cpu/intel/common/common.h>
+#include <cpu/x86/cache.h>
+
+static void model_f2x_init(struct device *cpu)
+{
+	/* Turn on caching if we haven't already */
+	enable_cache();
+};
+
+static struct device_operations cpu_dev_ops = {
+	.init     = model_f2x_init,
+};
+
+static const struct cpu_device_id cpu_table[] = {
+	{ X86_VENDOR_INTEL, 0x0f22 },
+	{ X86_VENDOR_INTEL, 0x0f24 },
+	{ X86_VENDOR_INTEL, 0x0f25 },
+	{ X86_VENDOR_INTEL, 0x0f26 },
+	{ X86_VENDOR_INTEL, 0x0f27 },
+	{ X86_VENDOR_INTEL, 0x0f29 },
+	{ 0, 0 },
+};
+
+static const struct cpu_driver driver __cpu_driver = {
+	.ops      = &cpu_dev_ops,
+	.id_table = cpu_table,
+};
+
+/* Parallel MP initialization support. */
+static void pre_mp_init(void)
+{
+	const void *patch = intel_microcode_find();
+	intel_microcode_load_unlocked(patch);
+
+	/* Setup MTRRs based on physical address size. */
+	x86_setup_mtrrs_with_detect();
+	x86_mtrr_check();
+}
+
+static int get_cpu_count(void)
+{
+	return CONFIG_MAX_CPUS;
+}
+
+static void get_microcode_info(const void **microcode, int *parallel)
+{
+	*microcode = intel_microcode_find();
+	*parallel = !intel_ht_supported();
+}
+
+static const struct mp_ops mp_ops = {
+	.pre_mp_init = pre_mp_init,
+	.get_cpu_count = get_cpu_count,
+	.get_microcode_info = get_microcode_info,
+};
+
+void mp_init_cpus(struct bus *cpu_bus)
+{
+	mp_init_with_smm(cpu_bus, &mp_ops);
+}