diff --git a/arch/arm/lib/board.c b/arch/arm/lib/board.c
index c320a35166b82009a7cc623b7460754294bf3ba5..ba62394a9d49d72638bc0896f1d81c2631bcb8d6 100644
--- a/arch/arm/lib/board.c
+++ b/arch/arm/lib/board.c
@@ -318,7 +318,7 @@ void board_init_f(ulong bootflag)
 	gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 #endif
 
-	addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
+	addr = CONFIG_SYS_SDRAM_BASE + get_effective_memsize();
 
 #ifdef CONFIG_LOGBUFFER
 #ifndef CONFIG_ALT_LB_ADDR
diff --git a/arch/powerpc/cpu/mpc512x/traps.c b/arch/powerpc/cpu/mpc512x/traps.c
index 10169912b7f2e614e180d025aa61810c3664a62d..9f5bcd7fc3350a5fa9b1b44496b9cac0e921872e 100644
--- a/arch/powerpc/cpu/mpc512x/traps.c
+++ b/arch/powerpc/cpu/mpc512x/traps.c
@@ -27,7 +27,6 @@ extern unsigned long search_exception_table(unsigned long);
  * amount of memory on the system if we're unable to keep all
  * the memory mapped in.
  */
-extern ulong get_effective_memsize(void);
 #define END_OF_MEM (gd->bd->bi_memstart + get_effective_memsize())
 
 /*
diff --git a/arch/powerpc/cpu/mpc85xx/traps.c b/arch/powerpc/cpu/mpc85xx/traps.c
index 3ef6e4ae160ffc2bd8739bb6c229ec13f1d09557..24adbc3078f5d2b77926fa2f759051475d9e538d 100644
--- a/arch/powerpc/cpu/mpc85xx/traps.c
+++ b/arch/powerpc/cpu/mpc85xx/traps.c
@@ -35,7 +35,6 @@ extern unsigned long search_exception_table(unsigned long);
  * amount of memory on the system if we're unable to keep all
  * the memory mapped in.
  */
-extern ulong get_effective_memsize(void);
 #define END_OF_MEM (gd->bd->bi_memstart + get_effective_memsize())
 
 static __inline__ void set_tsr(unsigned long val)
diff --git a/arch/powerpc/cpu/mpc86xx/traps.c b/arch/powerpc/cpu/mpc86xx/traps.c
index 0b7ea3b184de0db93e0c8a9abe99783cd2d71e3c..92fb537453b5f6412c259acb033e018b69b78512 100644
--- a/arch/powerpc/cpu/mpc86xx/traps.c
+++ b/arch/powerpc/cpu/mpc86xx/traps.c
@@ -29,7 +29,6 @@ extern unsigned long search_exception_table(unsigned long);
  * amount of memory on the system if we're unable to keep all
  * the memory mapped in.
  */
-extern ulong get_effective_memsize(void);
 #define END_OF_MEM (gd->bd->bi_memstart + get_effective_memsize())
 
 /*
diff --git a/arch/powerpc/lib/board.c b/arch/powerpc/lib/board.c
index 34bbfca5544d8d5bde5bff3be5ebc64f275dddfa..13d761c1f755bd2fe8922f70b3ec7b4d8d337726 100644
--- a/arch/powerpc/lib/board.c
+++ b/arch/powerpc/lib/board.c
@@ -312,17 +312,6 @@ static init_fnc_t *init_sequence[] = {
 	NULL,	/* Terminate this list */
 };
 
-ulong get_effective_memsize(void)
-{
-#ifndef	CONFIG_VERY_BIG_RAM
-	return gd->ram_size;
-#else
-	/* limit stack to what we can reasonable map */
-	return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
-		CONFIG_MAX_MEM_MAPPED : gd->ram_size);
-#endif
-}
-
 static int __fixup_cpu(void)
 {
 	return 0;
@@ -343,13 +332,6 @@ int fixup_cpu(void) __attribute__((weak, alias("__fixup_cpu")));
  * initialized, and stack space is limited to a few kB.
  */
 
-#ifdef CONFIG_LOGBUFFER
-unsigned long logbuffer_base(void)
-{
-	return CONFIG_SYS_SDRAM_BASE + get_effective_memsize() - LOGBUFF_LEN;
-}
-#endif
-
 void board_init_f(ulong bootflag)
 {
 	bd_t *bd;
diff --git a/arch/powerpc/lib/bootm.c b/arch/powerpc/lib/bootm.c
index 41fc8f7ff7a355ec3a2cbbd548e63022324489d0..c08b62c47e353b277e033085d0df29a3092794e6 100644
--- a/arch/powerpc/lib/bootm.c
+++ b/arch/powerpc/lib/bootm.c
@@ -30,7 +30,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-extern ulong get_effective_memsize(void);
 static ulong get_sp (void);
 extern void ft_fixup_num_cores(void *blob);
 static void set_clocks_in_mhz (bd_t *kbd);
diff --git a/board/freescale/c29xpcie/spl.c b/board/freescale/c29xpcie/spl.c
index 3cfdb723b97e5a731799d6047c812afb378a94b0..211171140084fbe52c4d6b5ccbe4b7faad7f6b80 100644
--- a/board/freescale/c29xpcie/spl.c
+++ b/board/freescale/c29xpcie/spl.c
@@ -12,7 +12,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-ulong get_effective_memsize(void)
+phys_size_t get_effective_memsize(void)
 {
 	return CONFIG_SYS_L2_SIZE;
 }
diff --git a/board/freescale/p1022ds/spl.c b/board/freescale/p1022ds/spl.c
index 7f151e38cf911b05521f7a53cbf048ad5820cf51..7bd9d296ee0d072dbde263c73857df000bbec686 100644
--- a/board/freescale/p1022ds/spl.c
+++ b/board/freescale/p1022ds/spl.c
@@ -21,7 +21,7 @@ static const u32 sysclk_tbl[] = {
 	99999000, 11111000, 12499800, 13333200
 };
 
-ulong get_effective_memsize(void)
+phys_size_t get_effective_memsize(void)
 {
 	return CONFIG_SYS_L2_SIZE;
 }
diff --git a/board/freescale/p1_p2_rdb_pc/spl.c b/board/freescale/p1_p2_rdb_pc/spl.c
index 9bb071692d54fc7e5531098aec79ca6a0267068b..8d0d850480212c881e0a8b3eb94518e7af8a27a7 100644
--- a/board/freescale/p1_p2_rdb_pc/spl.c
+++ b/board/freescale/p1_p2_rdb_pc/spl.c
@@ -20,7 +20,7 @@ static const u32 sysclk_tbl[] = {
 	99999000, 11111000, 12499800, 13333200
 };
 
-ulong get_effective_memsize(void)
+phys_size_t get_effective_memsize(void)
 {
 	return CONFIG_SYS_L2_SIZE;
 }
diff --git a/common/board_f.c b/common/board_f.c
index 02965b0df76a36a2218264d82365d087816d831f..a973b95334131717b0ee0896b18bce0906922bce 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -223,17 +223,6 @@ static int show_dram_config(void)
 	return 0;
 }
 
-ulong get_effective_memsize(void)
-{
-#ifndef	CONFIG_VERY_BIG_RAM
-	return gd->ram_size;
-#else
-	/* limit stack to what we can reasonable map */
-	return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
-		CONFIG_MAX_MEM_MAPPED : gd->ram_size);
-#endif
-}
-
 void __dram_init_banksize(void)
 {
 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
diff --git a/common/cmd_log.c b/common/cmd_log.c
index 8164bdf4886460f535b9831da167ef6a90c66b97..38d0f5edfd7872d50af20b5e38173b0871c39f19 100644
--- a/common/cmd_log.c
+++ b/common/cmd_log.c
@@ -52,7 +52,7 @@ static char *lbuf;
 
 unsigned long __logbuffer_base(void)
 {
-	return CONFIG_SYS_SDRAM_BASE + gd->ram_size - LOGBUFF_LEN;
+	return CONFIG_SYS_SDRAM_BASE + get_effective_memsize() - LOGBUFF_LEN;
 }
 unsigned long logbuffer_base(void)
 __attribute__((weak, alias("__logbuffer_base")));
diff --git a/common/memsize.c b/common/memsize.c
index 73b92c8a00e4f76ebde34a50b5da4847e4599455..589400d3b14d8a8c53e9908ca2aec7cce66f0e11 100644
--- a/common/memsize.c
+++ b/common/memsize.c
@@ -5,7 +5,10 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#include <config.h>
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
 #ifdef __PPC__
 /*
  * At least on G2 PowerPC cores, sequential accesses to non-existent
@@ -76,3 +79,14 @@ long get_ram_size(long *base, long maxsize)
 
 	return (maxsize);
 }
+
+phys_size_t __weak get_effective_memsize(void)
+{
+#ifndef CONFIG_VERY_BIG_RAM
+	return gd->ram_size;
+#else
+	/* limit stack to what we can reasonable map */
+	return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
+		CONFIG_MAX_MEM_MAPPED : gd->ram_size);
+#endif
+}
diff --git a/include/common.h b/include/common.h
index 033b5d946d11b76040a37bf9db13ef16df129ba9..96a45a6cf70ea0a312aa8733f5f0d010a20c08ed 100644
--- a/include/common.h
+++ b/include/common.h
@@ -461,6 +461,7 @@ void	api_init (void);
 
 /* common/memsize.c */
 long	get_ram_size  (long *, long);
+phys_size_t get_effective_memsize(void);
 
 /* $(BOARD)/$(BOARD).c */
 void	reset_phy     (void);