Change in coreboot[master]: nb/intel/i440bx: Use PARALLEL_MP

[Arthur Heymans (Code Review)]

Attention is currently required from: Patrick Rudolph.
Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/59693 )

Change subject: nb/intel/i440bx: Use PARALLEL_MP
......................................................................

nb/intel/i440bx: Use PARALLEL_MP

Now that PARALLEL_MP can also deal with !SMP it can be used for this
northbridge, which always features one CPU.

The ramstage size by roughly 5K, but the compressed size increase by
~1K.

Change-Id: Ic8d2582b353069eecea8561cfe01b2dd8221779b
Signed-off-by: Arthur Heymans 
---
M src/northbridge/intel/i440bx/Kconfig
M src/northbridge/intel/i440bx/northbridge.c
2 files changed, 15 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/93/59693/1

diff --git a/src/northbridge/intel/i440bx/Kconfig b/src/northbridge/intel/i440bx/Kconfig
index 4b1638c..d97c627 100644
--- a/src/northbridge/intel/i440bx/Kconfig
+++ b/src/northbridge/intel/i440bx/Kconfig
@@ -5,7 +5,7 @@
    select NO_ECAM_MMCONF_SUPPORT
    select HAVE_DEBUG_RAM_SETUP
    select NO_CBFS_MCACHE
-	select LEGACY_SMP_INIT
+	select PARALLEL_MP

config SDRAMPWR_4DIMM
    bool
diff --git a/src/northbridge/intel/i440bx/northbridge.c b/src/northbridge/intel/i440bx/northbridge.c
index 2659288..8225e1c 100644
--- a/src/northbridge/intel/i440bx/northbridge.c
+++ b/src/northbridge/intel/i440bx/northbridge.c
@@ -7,6 +7,7 @@
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <cpu/cpu.h>
+#include <cpu/x86/mp.h>
 #include "i440bx.h"

static void northbridge_init(struct device *dev)
@@ -72,15 +73,25 @@
    .scan_bus		= pci_domain_scan_bus,
 };

-static void cpu_bus_init(struct device *dev)
+static int get_cpu_count(void)
 {
-	initialize_cpus(dev->link_list);
+	return 1;
+}
+
+static const struct mp_ops mp_ops = {
+	.get_cpu_count = get_cpu_count,
+};
+
+void mp_init_cpus(struct bus *cpu_bus)
+{
+	/* TODO: Handle mp_init_with_smm failure? */
+	mp_init_with_smm(cpu_bus, &mp_ops);
 }

static struct device_operations cpu_bus_ops = {
    .read_resources   = noop_read_resources,
    .set_resources    = noop_set_resources,
-	.init             = cpu_bus_init,
+	.init             = mp_cpu_bus_init,
 };

static void enable_dev(struct device *dev)