lib/bootmem: allow architecture specific bootmem ranges

A architecture-specific function, named bootmem_arch_add_ranges(),
is added so that each architecture can add entries into the bootmem
memory map. This allows for a common write_tables() implementation
to avoid code duplication.

Change-Id: I834c82eae212869cad8bb02c7abcd9254d120735
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14434
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/arch/arm/tables.c

@@ -17,12 +17,17 @@
 
 #include <console/console.h>
 #include <cpu/cpu.h>
+#include <bootmem.h>
 #include <boot/tables.h>
 #include <boot/coreboot_tables.h>
 #include <string.h>
 #include <cbmem.h>
 #include <lib.h>
 
+void bootmem_arch_add_ranges(void)
+{
+}
+
 #define MAX_COREBOOT_TABLE_SIZE CONFIG_COREBOOT_TABLE_SIZE
 
 void write_tables(void)

src/arch/arm64/tables.c

@@ -17,12 +17,17 @@
 
 #include <console/console.h>
 #include <cpu/cpu.h>
+#include <bootmem.h>
 #include <boot/tables.h>
 #include <boot/coreboot_tables.h>
 #include <string.h>
 #include <cbmem.h>
 #include <lib.h>
 
+void bootmem_arch_add_ranges(void)
+{
+}
+
 #define MAX_COREBOOT_TABLE_SIZE CONFIG_COREBOOT_TABLE_SIZE
 
 void write_tables(void)

src/arch/mips/tables.c

@@ -18,12 +18,17 @@
 
 #include <console/console.h>
 #include <cpu/cpu.h>
+#include <bootmem.h>
 #include <boot/tables.h>
 #include <boot/coreboot_tables.h>
 #include <string.h>
 #include <cbmem.h>
 #include <lib.h>
 
+void bootmem_arch_add_ranges(void)
+{
+}
+
 #define MAX_COREBOOT_TABLE_SIZE CONFIG_COREBOOT_TABLE_SIZE
 
 void write_tables(void)

src/arch/power8/tables.c

@@ -17,12 +17,17 @@
 
 #include <console/console.h>
 #include <cpu/cpu.h>
+#include <bootmem.h>
 #include <boot/tables.h>
 #include <boot/coreboot_tables.h>
 #include <string.h>
 #include <cbmem.h>
 #include <lib.h>
 
+void bootmem_arch_add_ranges(void)
+{
+}
+
 #define MAX_COREBOOT_TABLE_SIZE CONFIG_COREBOOT_TABLE_SIZE
 
 void write_tables(void)

src/arch/riscv/tables.c

@@ -17,12 +17,17 @@
 
 #include <console/console.h>
 #include <cpu/cpu.h>
+#include <bootmem.h>
 #include <boot/tables.h>
 #include <boot/coreboot_tables.h>
 #include <string.h>
 #include <cbmem.h>
 #include <lib.h>
 
+void bootmem_arch_add_ranges(void)
+{
+}
+
 #define MAX_COREBOOT_TABLE_SIZE CONFIG_COREBOOT_TABLE_SIZE
 
 void write_tables(void)

src/arch/x86/tables.c

@@ -17,6 +17,7 @@
 
 #include <console/console.h>
 #include <cpu/cpu.h>
+#include <bootmem.h>
 #include <boot/tables.h>
 #include <boot/coreboot_tables.h>
 #include <arch/pirq_routing.h>
@@ -180,6 +181,10 @@ static unsigned long write_smbios_table(unsigned long rom_table_end)
 	return rom_table_end;
 }
 
+void bootmem_arch_add_ranges(void)
+{
+}
+
 void write_tables(void)
 {
 	unsigned long low_table_start, low_table_end;

src/include/bootmem.h

@@ -26,6 +26,9 @@
  */
 void bootmem_init(void);
 
+/* Architecture hook to add bootmem areas the architecture controls. */
+void bootmem_arch_add_ranges(void);
+
 /* Add a range of a given type to the bootmem address space. */
 void bootmem_add_range(uint64_t start, uint64_t size, uint32_t type);
 

src/lib/bootmem.c

@@ -39,6 +39,8 @@ void bootmem_init(void)
 
 	/* Add memory used by CBMEM. */
 	cbmem_add_bootmem();
+
+	bootmem_arch_add_ranges();
 }
 
 void bootmem_add_range(uint64_t start, uint64_t size, uint32_t type)