[PATCH 4/8] aspeed: Introduce a AspeedSoCClass 'boot_from_emmc' handler

["Cédric Le Goater" <clg@redhat.com>]

From: Cédric Le Goater <clg@kaod.org>

Report support on the AST2600 SoC if the boot-from-eMMC HW strapping
bit is set at the board level. AST2700 also has support but it is not
yet ready in QEMU and others SoCs do not have support, so return false
always for these.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 include/hw/arm/aspeed_soc.h | 1 +
 hw/arm/aspeed_ast2600.c     | 8 ++++++++
 hw/arm/aspeed_soc_common.c  | 7 +++++++
 3 files changed, 16 insertions(+)

diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h
index 849ba37f9524..624d489e0d63 100644
--- a/include/hw/arm/aspeed_soc.h
+++ b/include/hw/arm/aspeed_soc.h
@@ -164,6 +164,7 @@ struct AspeedSoCClass {
     const hwaddr *memmap;
     uint32_t num_cpus;
     qemu_irq (*get_irq)(AspeedSoCState *s, int dev);
+    bool (*boot_from_emmc)(AspeedSoCState *s);
 };
 
 const char *aspeed_soc_cpu_type(AspeedSoCClass *sc);
diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c
index 31713de74a5f..8114e7f2759f 100644
--- a/hw/arm/aspeed_ast2600.c
+++ b/hw/arm/aspeed_ast2600.c
@@ -646,6 +646,13 @@ static void aspeed_soc_ast2600_realize(DeviceState *dev, Error **errp)
     }
 }
 
+static bool aspeed_soc_ast2600_boot_from_emmc(AspeedSoCState *s)
+{
+    uint32_t hw_strap1 = object_property_get_uint(OBJECT(&s->scu),
+                                                  "hw-strap1", &error_abort);
+    return !!(hw_strap1 & AST2600_HW_STRAP_BOOT_SRC_EMMC);
+}
+
 static void aspeed_soc_ast2600_class_init(ObjectClass *oc, void *data)
 {
     static const char * const valid_cpu_types[] = {
@@ -673,6 +680,7 @@ static void aspeed_soc_ast2600_class_init(ObjectClass *oc, void *data)
     sc->memmap       = aspeed_soc_ast2600_memmap;
     sc->num_cpus     = 2;
     sc->get_irq      = aspeed_soc_ast2600_get_irq;
+    sc->boot_from_emmc = aspeed_soc_ast2600_boot_from_emmc;
 }
 
 static const TypeInfo aspeed_soc_ast2600_types[] = {
diff --git a/hw/arm/aspeed_soc_common.c b/hw/arm/aspeed_soc_common.c
index 1e8f2558fdc2..05551461aea0 100644
--- a/hw/arm/aspeed_soc_common.c
+++ b/hw/arm/aspeed_soc_common.c
@@ -134,6 +134,11 @@ static void aspeed_soc_realize(DeviceState *dev, Error **errp)
     }
 }
 
+static bool aspeed_soc_boot_from_emmc(AspeedSoCState *s)
+{
+    return false;
+}
+
 static Property aspeed_soc_properties[] = {
     DEFINE_PROP_LINK("dram", AspeedSoCState, dram_mr, TYPE_MEMORY_REGION,
                      MemoryRegion *),
@@ -145,9 +150,11 @@ static Property aspeed_soc_properties[] = {
 static void aspeed_soc_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
+    AspeedSoCClass *sc = ASPEED_SOC_CLASS(oc);
 
     dc->realize = aspeed_soc_realize;
     device_class_set_props(dc, aspeed_soc_properties);
+    sc->boot_from_emmc = aspeed_soc_boot_from_emmc;
 }
 
 static const TypeInfo aspeed_soc_types[] = {
-- 
2.45.2