lmb: only force on arches that use it

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

common/cmd_bootm.c

@@ -153,18 +153,6 @@ static boot_os_fn *boot_os[] = {
 ulong load_addr = CONFIG_SYS_LOAD_ADDR;	/* Default Load Address */
 static bootm_headers_t images;		/* pointers to os/initrd/fdt images */
 
-void __board_lmb_reserve(struct lmb *lmb)
-{
-	/* please define platform specific board_lmb_reserve() */
-}
-void board_lmb_reserve(struct lmb *lmb) __attribute__((weak, alias("__board_lmb_reserve")));
-
-void __arch_lmb_reserve(struct lmb *lmb)
-{
-	/* please define platform specific arch_lmb_reserve() */
-}
-void arch_lmb_reserve(struct lmb *lmb) __attribute__((weak, alias("__arch_lmb_reserve")));
-
 /* Allow for arch specific config before we boot */
 void __arch_preboot_os(void)
 {
@@ -200,15 +188,11 @@ void arch_preboot_os(void) __attribute__((weak, alias("__arch_preboot_os")));
 # error Unknown CPU type
 #endif
 
-static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+static void bootm_start_lmb(void)
 {
+#ifdef CONFIG_LMB
 	ulong		mem_start;
 	phys_size_t	mem_size;
-	void		*os_hdr;
-	int		ret;
-
-	memset ((void *)&images, 0, sizeof (images));
-	images.verify = getenv_yesno ("verify");
 
 	lmb_init(&images.lmb);
 
@@ -219,6 +203,20 @@ static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 
 	arch_lmb_reserve(&images.lmb);
 	board_lmb_reserve(&images.lmb);
+#else
+# define lmb_reserve(lmb, base, size)
+#endif
+}
+
+static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	void		*os_hdr;
+	int		ret;
+
+	memset ((void *)&images, 0, sizeof (images));
+	images.verify = getenv_yesno ("verify");
+
+	bootm_start_lmb();
 
 	/* get kernel image header, start address and length */
 	os_hdr = boot_get_kernel (cmdtp, flag, argc, argv,

include/asm-m68k/config.h

@@ -21,4 +21,6 @@
 #ifndef _ASM_CONFIG_H_
 #define _ASM_CONFIG_H_
 
+#define CONFIG_LMB
+
 #endif

include/asm-ppc/config.h

@@ -21,6 +21,8 @@
 #ifndef _ASM_CONFIG_H_
 #define _ASM_CONFIG_H_
 
+#define CONFIG_LMB
+
 #ifndef CONFIG_MAX_MEM_MAPPED
 #if defined(CONFIG_4xx) || defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
 #define CONFIG_MAX_MEM_MAPPED	((phys_size_t)2 << 30)

include/asm-sparc/config.h

@@ -21,4 +21,6 @@
 #ifndef _ASM_CONFIG_H_
 #define _ASM_CONFIG_H_
 
+#define CONFIG_LMB
+
 #endif

include/image.h

@@ -256,7 +256,7 @@ typedef struct bootm_headers {
 #define	BOOTM_STATE_OS_GO	(0x00000080)
 	int		state;
 
-#ifndef USE_HOSTCC
+#ifdef CONFIG_LMB
 	struct lmb	lmb;		/* for memory mgmt */
 #endif
 } bootm_headers_t;

include/lmb.h

@@ -52,6 +52,10 @@ lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
 {
 	return type->region[region_nr].size;
 }
+
+void board_lmb_reserve(struct lmb *lmb);
+void arch_lmb_reserve(struct lmb *lmb);
+
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_LMB_H */

lib_generic/Makefile

@@ -38,7 +38,7 @@ COBJS-y += ctype.o
 COBJS-y += display_options.o
 COBJS-y += div64.o
 COBJS-y += gunzip.o
-COBJS-y += lmb.o
+COBJS-$(CONFIG_LMB) += lmb.o
 COBJS-y += ldiv.o
 COBJS-$(CONFIG_MD5) += md5.o
 COBJS-y += net_utils.o

lib_generic/lmb.c

@@ -334,3 +334,15 @@ int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr)
 	}
 	return 0;
 }
+
+void __board_lmb_reserve(struct lmb *lmb)
+{
+	/* please define platform specific board_lmb_reserve() */
+}
+void board_lmb_reserve(struct lmb *lmb) __attribute__((weak, alias("__board_lmb_reserve")));
+
+void __arch_lmb_reserve(struct lmb *lmb)
+{
+	/* please define platform specific arch_lmb_reserve() */
+}
+void arch_lmb_reserve(struct lmb *lmb) __attribute__((weak, alias("__arch_lmb_reserve")));