Add support for programming SPI devices attached to the AST2400 BMC

All possible (five) Flash devices are supported with the programmer-
specific parameter spibus=<n>, along with a special setting spibus=host
to access the dedicated SPI controller (often used for the host BIOS).

Change-Id: I3d49c73b6f5da97af23cace89759923265c256dc
Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>

Makefile

@@ -214,6 +214,11 @@ UNSUPPORTED_FEATURES += CONFIG_GFXNVIDIA=yes
 else
 override CONFIG_GFXNVIDIA = no
 endif
+ifeq ($(CONFIG_AST2400), yes)
+UNSUPPORTED_FEATURES += CONFIG_AST2400=yes
+else
+override CONFIG_AST2400 = no
+endif
 ifeq ($(CONFIG_SATASII), yes)
 UNSUPPORTED_FEATURES += CONFIG_SATASII=yes
 else
@@ -441,6 +446,11 @@ UNSUPPORTED_FEATURES += CONFIG_GFXNVIDIA=yes
 else
 override CONFIG_GFXNVIDIA = no
 endif
+ifeq ($(CONFIG_AST2400), yes)
+UNSUPPORTED_FEATURES += CONFIG_AST2400=yes
+else
+override CONFIG_AST2400 = no
+endif
 ifeq ($(CONFIG_SATASII), yes)
 UNSUPPORTED_FEATURES += CONFIG_SATASII=yes
 else
@@ -569,6 +579,9 @@ CONFIG_NIC3COM ?= yes
 # Enable NVIDIA graphics cards. Note: write and erase do not work properly.
 CONFIG_GFXNVIDIA ?= yes
 
+# Enable AST2400 BMC SoCs.
+CONFIG_AST2400 ?= yes
+
 # Always enable SiI SATA controllers for now.
 CONFIG_SATASII ?= yes
 
@@ -668,6 +681,7 @@ ifeq ($(CONFIG_ENABLE_LIBPCI_PROGRAMMERS), no)
 override CONFIG_INTERNAL = no
 override CONFIG_NIC3COM = no
 override CONFIG_GFXNVIDIA = no
+override CONFIG_AST2400 = no
 override CONFIG_SATASII = no
 override CONFIG_ATAHPT = no
 override CONFIG_ATAVIA = no
@@ -780,6 +794,12 @@ PROGRAMMER_OBJS += gfxnvidia.o
 NEED_LIBPCI += CONFIG_GFXNVIDIA
 endif
 
+ifeq ($(CONFIG_AST2400), yes)
+FEATURE_CFLAGS += -D'CONFIG_AST2400=1'
+PROGRAMMER_OBJS += ast2400.o
+NEED_LIBPCI += CONFIG_AST2400
+endif
+
 ifeq ($(CONFIG_SATASII), yes)
 FEATURE_CFLAGS += -D'CONFIG_SATASII=1'
 PROGRAMMER_OBJS += satasii.o

flashrom.c

@@ -134,6 +134,18 @@ const struct programmer_entry programmer_table[] = {
 	},
 #endif
 
+#if CONFIG_AST2400 == 1
+	{
+		.name			= "ast2400",
+		.type			= PCI,
+		.devs.dev		= bmc_aspeed,
+		.init			= ast2400_init,
+		.map_flash_region	= fallback_map,
+		.unmap_flash_region	= fallback_unmap,
+		.delay			= internal_delay,
+	},
+#endif
+
 #if CONFIG_DRKAISER == 1
 	{
 		.name			= "drkaiser",

programmer.h

@@ -45,6 +45,9 @@ enum programmer {
 #if CONFIG_GFXNVIDIA == 1
 	PROGRAMMER_GFXNVIDIA,
 #endif
+#if CONFIG_AST2400 == 1
+	PROGRAMMER_AST2400,
+#endif
 #if CONFIG_DRKAISER == 1
 	PROGRAMMER_DRKAISER,
 #endif
@@ -399,6 +402,12 @@ int gfxnvidia_init(void);
 extern const struct dev_entry gfx_nvidia[];
 #endif
 
+/* ast2400.c */
+#if CONFIG_AST2400 == 1
+int ast2400_init(void);
+extern const struct dev_entry bmc_aspeed[];
+#endif
+
 /* drkaiser.c */
 #if CONFIG_DRKAISER == 1
 int drkaiser_init(void);
@@ -600,6 +609,10 @@ enum spi_controller {
 #if CONFIG_CH341A_SPI == 1
 	SPI_CONTROLLER_CH341A_SPI,
 #endif
+
+#if CONFIG_AST2400 == 1
+	SPI_CONTROLLER_AST2400,
+#endif
 };
 
 #define MAX_DATA_UNSPECIFIED 0