diff --git a/arch/mips/au1000/common/setup.c b/arch/mips/au1000/common/setup.c
index eb6026ef1cbb88ee22ba25c6bbc4b0080078fe60..97165b6b3894a07908e16379fe4b639ebe4cd163 100644
--- a/arch/mips/au1000/common/setup.c
+++ b/arch/mips/au1000/common/setup.c
@@ -55,7 +55,7 @@ extern void au1xxx_time_init(void);
 extern void au1xxx_timer_setup(struct irqaction *irq);
 extern void set_cpuspec(void);
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	struct	cpu_spec *sp;
 	char *argptr;
diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c
index 928431a9bcb0e63fda059f8717030940efc52d1e..ca719d6398bd81b06689288b233f13873d210e04 100644
--- a/arch/mips/cobalt/setup.c
+++ b/arch/mips/cobalt/setup.c
@@ -120,7 +120,7 @@ static struct pci_controller cobalt_pci_controller = {
 	.io_offset	= 0 - GT64111_IO_BASE
 };
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	static struct uart_port uart;
 	unsigned int devfn = PCI_DEVFN(COBALT_PCICONF_VIA, 0);
diff --git a/arch/mips/ddb5xxx/ddb5074/setup.c b/arch/mips/ddb5xxx/ddb5074/setup.c
index 91456b068c2ef34cfe9a70d774745f53152846bf..4882ad1052e71c868ef1ea439fd53be690320d2b 100644
--- a/arch/mips/ddb5xxx/ddb5074/setup.c
+++ b/arch/mips/ddb5xxx/ddb5074/setup.c
@@ -86,7 +86,7 @@ static void __init ddb_time_init(void)
 
 
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	set_io_port_base(NILE4_PCI_IO_BASE);
 	isa_slot_offset = NILE4_PCI_MEM_BASE;
diff --git a/arch/mips/ddb5xxx/ddb5476/setup.c b/arch/mips/ddb5xxx/ddb5476/setup.c
index fc8d8bb4849c9391a49fe9129070a3989c6d2944..101021afb2e49be6a2ffad755c46a66c80b653a0 100644
--- a/arch/mips/ddb5xxx/ddb5476/setup.c
+++ b/arch/mips/ddb5xxx/ddb5476/setup.c
@@ -150,7 +150,7 @@ static struct {
 
 static void ddb5476_board_init(void);
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	set_io_port_base(KSEG1ADDR(DDB_PCI_IO_BASE));
 
diff --git a/arch/mips/ddb5xxx/ddb5477/setup.c b/arch/mips/ddb5xxx/ddb5477/setup.c
index 2f566034cc44a3b112ac9a9381feb52296531c97..93167ecdb424cc0799ecbce7eef14f1e1972ae73 100644
--- a/arch/mips/ddb5xxx/ddb5477/setup.c
+++ b/arch/mips/ddb5xxx/ddb5477/setup.c
@@ -171,7 +171,7 @@ static void ddb5477_board_init(void);
 extern struct pci_controller ddb5477_ext_controller;
 extern struct pci_controller ddb5477_io_controller;
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	/* initialize board - we don't trust the loader */
         ddb5477_board_init();
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index ad5d436d80c19bae206c86a6623b3aaa8e486263..9c707b9ceb65fdac4871408901f7abc5fa5b9062 100644
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -147,7 +147,7 @@ static void __init dec_be_init(void)
 extern void dec_time_init(void);
 extern void dec_timer_setup(struct irqaction *);
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	board_be_init = dec_be_init;
 	board_time_init = dec_time_init;
diff --git a/arch/mips/galileo-boards/ev96100/setup.c b/arch/mips/galileo-boards/ev96100/setup.c
index 78dbb18edeb8ae256b4b020bf35915857b1a0c0e..a04aea6123daf5ab3bd461f9138e927777864ed0 100644
--- a/arch/mips/galileo-boards/ev96100/setup.c
+++ b/arch/mips/galileo-boards/ev96100/setup.c
@@ -55,7 +55,7 @@ extern void mips_reboot_setup(void);
 
 unsigned char mac_0_1[12];
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	unsigned int config = read_c0_config();
 	unsigned int status = read_c0_status();
diff --git a/arch/mips/gt64120/ev64120/setup.c b/arch/mips/gt64120/ev64120/setup.c
index 6d859d1e7a2d0308ff45cab6a48b4f2ed7eee9d0..4236da31ecc679abafd9af5e4c50f55d163ffe79 100644
--- a/arch/mips/gt64120/ev64120/setup.c
+++ b/arch/mips/gt64120/ev64120/setup.c
@@ -71,7 +71,7 @@ unsigned long __init prom_free_prom_memory(void)
  */
 extern void gt64120_time_init(void);
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	_machine_restart = galileo_machine_restart;
 	_machine_halt = galileo_machine_halt;
diff --git a/arch/mips/gt64120/momenco_ocelot/setup.c b/arch/mips/gt64120/momenco_ocelot/setup.c
index 20b65d3d2151579149daca9a978429a7d3374a1e..1193a22c469376febb694ae9fe5dbb1cf749331d 100644
--- a/arch/mips/gt64120/momenco_ocelot/setup.c
+++ b/arch/mips/gt64120/momenco_ocelot/setup.c
@@ -152,7 +152,7 @@ void PMON_v2_setup()
 	gt64120_base = 0xe0000000;
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	void (*l3func)(unsigned long)=KSEG1ADDR(&setup_l3cache);
 	unsigned int tmpword;
diff --git a/arch/mips/ite-boards/generic/it8172_setup.c b/arch/mips/ite-boards/generic/it8172_setup.c
index 00844e621e5f402059bf4df801b29feb50fc40a7..da6ae0991199a4214bb6e2ad227864fb49351aa3 100644
--- a/arch/mips/ite-boards/generic/it8172_setup.c
+++ b/arch/mips/ite-boards/generic/it8172_setup.c
@@ -154,7 +154,7 @@ void __init it8172_init_ram_resource(unsigned long memsize)
 	it8172_resources.ram.end = memsize;
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	unsigned short dsr;
 	char *argptr;
diff --git a/arch/mips/jazz/setup.c b/arch/mips/jazz/setup.c
index 4036dc4345515fd1c251d96c0a63012ad10b8898..c8d0df7d0c36ceed402bb68913183e3518152556 100644
--- a/arch/mips/jazz/setup.c
+++ b/arch/mips/jazz/setup.c
@@ -52,7 +52,7 @@ static struct resource jazz_io_resources[] = {
 	{ "dma2", 0xc0, 0xdf, IORESOURCE_BUSY },
 };
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	int i;
 
diff --git a/arch/mips/jmr3927/rbhma3100/setup.c b/arch/mips/jmr3927/rbhma3100/setup.c
index 1f136551f2ac28d1be458b3272387c8c08da66e1..308e6cdcd24523edba00e8b7d97d3d13cac603d1 100644
--- a/arch/mips/jmr3927/rbhma3100/setup.c
+++ b/arch/mips/jmr3927/rbhma3100/setup.c
@@ -238,7 +238,7 @@ static void jmr3927_board_init(void);
 extern struct resource pci_io_resource;
 extern struct resource pci_mem_resource;
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	char *argptr;
 
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 397a70e651b5e9c21dbe7e3347dcc279df728b78..bfcec8d9bfe4bb4f202bf61c501f49738e12611c 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -442,6 +442,48 @@ static inline void bootmem_init(void)
 #endif /* CONFIG_BLK_DEV_INITRD  */
 }
 
+/*
+ * arch_mem_init - initialize memory managment subsystem
+ *
+ *  o plat_mem_setup() detects the memory configuration and will record detected
+ *    memory areas using add_memory_region.
+ *  o parse_cmdline_early() parses the command line for mem= options which,
+ *    iff detected, will override the results of the automatic detection.
+ *
+ * At this stage the memory configuration of the system is known to the
+ * kernel but generic memory managment system is still entirely uninitialized.
+ *
+ *  o bootmem_init()
+ *  o sparse_init()
+ *  o paging_init()
+ *
+ * At this stage the bootmem allocator is ready to use.
+ *
+ * NOTE: historically plat_mem_setup did the entire platform initialization.
+ *       This was rather impractical because it meant plat_mem_setup had to
+ * get away without any kind of memory allocator.  To keep old code from
+ * breaking plat_setup was just renamed to plat_setup and a second platform
+ * initialization hook for anything else was introduced.
+ */
+
+extern void plat_mem_setup(void);
+
+static void __init arch_mem_init(char **cmdline_p)
+{
+	/* call board setup routine */
+	plat_mem_setup();
+
+	strlcpy(command_line, arcs_cmdline, sizeof(command_line));
+	strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
+
+	*cmdline_p = command_line;
+
+	parse_cmdline_early();
+	bootmem_init();
+	sparse_init();
+	paging_init();
+}
+
 static inline void resource_init(void)
 {
 	int i;
@@ -495,8 +537,6 @@ static inline void resource_init(void)
 #undef MAXMEM
 #undef MAXMEM_PFN
 
-extern void plat_setup(void);
-
 void __init setup_arch(char **cmdline_p)
 {
 	cpu_probe();
@@ -511,18 +551,8 @@ void __init setup_arch(char **cmdline_p)
 #endif
 #endif
 
-	/* call board setup routine */
-	plat_setup();
+	arch_mem_init(cmdline_p);
 
-	strlcpy(command_line, arcs_cmdline, sizeof(command_line));
-	strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
-
-	*cmdline_p = command_line;
-
-	parse_cmdline_early();
-	bootmem_init();
-	sparse_init();
-	paging_init();
 	resource_init();
 #ifdef CONFIG_SMP
 	plat_smp_setup();
diff --git a/arch/mips/lasat/setup.c b/arch/mips/lasat/setup.c
index bb70a8240e610026dae01c69d4c3b195b9ac4833..3f64277429e43860483c2adbc7dd62f17537940c 100644
--- a/arch/mips/lasat/setup.c
+++ b/arch/mips/lasat/setup.c
@@ -155,7 +155,7 @@ void __init serial_init(void)
 }
 #endif
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	int i;
 	lasat_misc  = &lasat_misc_info[mips_machtype];
diff --git a/arch/mips/mips-boards/atlas/atlas_setup.c b/arch/mips/mips-boards/atlas/atlas_setup.c
index c20d401ecf80d5ed29e320ec0bd5e4e2c002a6d1..8cc9effcb832d5a6eccd161d632af28b92b82295 100644
--- a/arch/mips/mips-boards/atlas/atlas_setup.c
+++ b/arch/mips/mips-boards/atlas/atlas_setup.c
@@ -50,7 +50,7 @@ const char *get_system_type(void)
 	return "MIPS Atlas";
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	mips_pcibios_init();
 
diff --git a/arch/mips/mips-boards/malta/malta_setup.c b/arch/mips/mips-boards/malta/malta_setup.c
index ae1de3dc71ed9dd0f910cd92949d9bfd89e8db74..0766e434b6bde10283c6dc627eca4e330bafa5de 100644
--- a/arch/mips/mips-boards/malta/malta_setup.c
+++ b/arch/mips/mips-boards/malta/malta_setup.c
@@ -111,7 +111,7 @@ void __init fd_activate(void)
 }
 #endif
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	unsigned int i;
 
diff --git a/arch/mips/mips-boards/sead/sead_setup.c b/arch/mips/mips-boards/sead/sead_setup.c
index 4266ce445174e4bd67866f3aa783b7a8b6b4b1be..6430f11f3a9596532b4c1b21bcbb3e69337d2bf3 100644
--- a/arch/mips/mips-boards/sead/sead_setup.c
+++ b/arch/mips/mips-boards/sead/sead_setup.c
@@ -45,7 +45,7 @@ const char *get_system_type(void)
 	return "MIPS SEAD";
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	ioport_resource.end = 0x7fffffff;
 
diff --git a/arch/mips/mips-boards/sim/sim_setup.c b/arch/mips/mips-boards/sim/sim_setup.c
index a2fd62997ca3c3b9ee7337d3622834761b2ccb88..15a5dac4ae19ad1122b99e06c2f4abc1813e959b 100644
--- a/arch/mips/mips-boards/sim/sim_setup.c
+++ b/arch/mips/mips-boards/sim/sim_setup.c
@@ -50,7 +50,7 @@ const char *get_system_type(void)
 	return "MIPSsim";
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	set_io_port_base(0xbfd00000);
 
diff --git a/arch/mips/momentum/jaguar_atx/setup.c b/arch/mips/momentum/jaguar_atx/setup.c
index 1379c76845dc6619436c064400f46226777130c1..df1485501ce631ed6ff262b0dbbdb8014919739a 100644
--- a/arch/mips/momentum/jaguar_atx/setup.c
+++ b/arch/mips/momentum/jaguar_atx/setup.c
@@ -359,7 +359,7 @@ static __init int __init ja_pci_init(void)
 
 arch_initcall(ja_pci_init);
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	unsigned int tmpword;
 
diff --git a/arch/mips/momentum/ocelot_3/setup.c b/arch/mips/momentum/ocelot_3/setup.c
index c69195234309687d3f03d52aa6a3fbace55fefbb..8c53490ba6f10acdb2c69a536dcacaac7f20ed29 100644
--- a/arch/mips/momentum/ocelot_3/setup.c
+++ b/arch/mips/momentum/ocelot_3/setup.c
@@ -313,7 +313,7 @@ static __init int __init ja_pci_init(void)
 
 arch_initcall(ja_pci_init);
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	unsigned int tmpword;
 
diff --git a/arch/mips/momentum/ocelot_c/setup.c b/arch/mips/momentum/ocelot_c/setup.c
index a3e6f5575592a2e63cc3c4991d4e24b8b2776739..257e1d1b72ddf1006a8cd31292f774bf47d13b48 100644
--- a/arch/mips/momentum/ocelot_c/setup.c
+++ b/arch/mips/momentum/ocelot_c/setup.c
@@ -231,7 +231,7 @@ void momenco_time_init(void)
 	rtc_mips_set_time = m48t37y_set_time;
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	unsigned int tmpword;
 
diff --git a/arch/mips/momentum/ocelot_g/setup.c b/arch/mips/momentum/ocelot_g/setup.c
index fed4e8eee116bc0a4555a20d6f64091304246d74..72143ab1e9008c164299a0dd46b2140bb1c10aa0 100644
--- a/arch/mips/momentum/ocelot_g/setup.c
+++ b/arch/mips/momentum/ocelot_g/setup.c
@@ -162,7 +162,7 @@ static void __init setup_l3cache(unsigned long size)
 	printk("Done\n");
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	void (*l3func)(unsigned long) = (void *) KSEG1ADDR(setup_l3cache);
 	unsigned int tmpword;
diff --git a/arch/mips/philips/pnx8550/common/setup.c b/arch/mips/philips/pnx8550/common/setup.c
index 2b199f338080703826f3d0da27f8afa437ccab18..0e791f4f6ea3bf41b384346c082737c30046ae8d 100644
--- a/arch/mips/philips/pnx8550/common/setup.c
+++ b/arch/mips/philips/pnx8550/common/setup.c
@@ -99,7 +99,7 @@ unsigned long get_system_mem_size(void)
 
 int pnx8550_console_port = -1;
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	int i;
 	char* argptr;
diff --git a/arch/mips/pmc-sierra/yosemite/setup.c b/arch/mips/pmc-sierra/yosemite/setup.c
index 3f724d661bdbf6d0f79aa56c7bc3b2793669cf23..aa0d6ff3c6ec83641cd17d1ac3e64fc9af0f4481 100644
--- a/arch/mips/pmc-sierra/yosemite/setup.c
+++ b/arch/mips/pmc-sierra/yosemite/setup.c
@@ -218,7 +218,7 @@ static void __init py_late_time_init(void)
 	py_rtc_setup();
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	board_time_init = yosemite_time_init;
 	late_time_init = py_late_time_init;
diff --git a/arch/mips/qemu/q-setup.c b/arch/mips/qemu/q-setup.c
index f27155bc2d9ad410a8fc9458bcfae1376ba45cd2..e100d6072e3100210653088bfe44d51cc25c7a74 100644
--- a/arch/mips/qemu/q-setup.c
+++ b/arch/mips/qemu/q-setup.c
@@ -20,7 +20,7 @@ static void __init qemu_timer_setup(struct irqaction *irq)
 	setup_irq(0, irq);
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	set_io_port_base(QEMU_PORT_BASE);
 	board_timer_setup = qemu_timer_setup;
diff --git a/arch/mips/sgi-ip22/ip22-setup.c b/arch/mips/sgi-ip22/ip22-setup.c
index 7018e1833e85dd7ab577c9f43b1bcaa48c7f42c5..d7138906eb10e13fca53702ddf1464db66a1f57b 100644
--- a/arch/mips/sgi-ip22/ip22-setup.c
+++ b/arch/mips/sgi-ip22/ip22-setup.c
@@ -53,7 +53,7 @@ EXPORT_SYMBOL(ip22_do_break);
 extern void ip22_be_init(void) __init;
 extern void ip22_time_init(void) __init;
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	char *ctype;
 	char *cserial;
diff --git a/arch/mips/sgi-ip27/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c
index 16c4b3410eafbf8528b04881cf529a5d2a69a263..a6b490e99709f49c064224d31fd7816a48cb474e 100644
--- a/arch/mips/sgi-ip27/ip27-init.c
+++ b/arch/mips/sgi-ip27/ip27-init.c
@@ -196,7 +196,7 @@ extern void ip27_setup_console(void);
 extern void ip27_time_init(void);
 extern void ip27_reboot_setup(void);
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	hubreg_t p, e, n_mode;
 	nasid_t nid;
diff --git a/arch/mips/sgi-ip32/ip32-setup.c b/arch/mips/sgi-ip32/ip32-setup.c
index a2dd8ae1ea8f10f2f7bf5d7c77055b277b3120bd..acbdad06fac18f157c6c2fbc7b929d809bf071ad 100644
--- a/arch/mips/sgi-ip32/ip32-setup.c
+++ b/arch/mips/sgi-ip32/ip32-setup.c
@@ -87,7 +87,7 @@ void __init ip32_timer_setup(struct irqaction *irq)
 	setup_irq(IP32_R4K_TIMER_IRQ, irq);
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	board_be_init = ip32_be_init;
 
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 4b5f74ff3edd3fd14aa861f0f507e911fc08d1b7..7f646bc0719ce2158b3689f3b8671f740e2f1bbe 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -103,7 +103,7 @@ int swarm_be_handler(struct pt_regs *regs, int is_fixup)
 	return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL);
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
 	bcm1480_setup();
diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c
index c33cb9d1e18db3c32392e0e0235ae32144196389..635b904cabd764e820f1cb721918c23dbd19f820 100644
--- a/arch/mips/sni/setup.c
+++ b/arch/mips/sni/setup.c
@@ -252,7 +252,7 @@ static inline void sni_pcimt_time_init(void)
 	rtc_mips_set_time = mc146818_set_rtc_mmss;
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	sni_pcimt_detect();
 	sni_pcimt_sc_init();
diff --git a/arch/mips/tx4927/common/tx4927_setup.c b/arch/mips/tx4927/common/tx4927_setup.c
index 77c3b66fb9598be5e029daf019fc873f5be5703a..81a5acfe8c4279c8845c072b1ea724c7c8023385 100644
--- a/arch/mips/tx4927/common/tx4927_setup.c
+++ b/arch/mips/tx4927/common/tx4927_setup.c
@@ -64,7 +64,7 @@ static void tx4927_write_buffer_flush(void)
 }
 
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	board_time_init = tx4927_time_init;
 	board_timer_setup = tx4927_timer_setup;
diff --git a/arch/mips/tx4938/common/setup.c b/arch/mips/tx4938/common/setup.c
index fc992953bf954de63295731b035c99e50031d34a..ef59a5cffc691e9001c1a9dafb7676189ecca214 100644
--- a/arch/mips/tx4938/common/setup.c
+++ b/arch/mips/tx4938/common/setup.c
@@ -61,7 +61,7 @@ tx4938_write_buffer_flush(void)
 }
 
 void __init
-plat_setup(void)
+plat_mem_setup(void)
 {
 	board_time_init = tx4938_time_init;
 	board_timer_setup = tx4938_timer_setup;
diff --git a/arch/mips/vr41xx/common/init.c b/arch/mips/vr41xx/common/init.c
index 707bd0933eedc2da82dd174bb408818da586aafc..915bfa5c07193cc5752e2540bb70b6c829848300 100644
--- a/arch/mips/vr41xx/common/init.c
+++ b/arch/mips/vr41xx/common/init.c
@@ -58,7 +58,7 @@ static void __init timer_init(void)
 	board_timer_setup = setup_timer_irq;
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	vr41xx_calculate_clock_frequency();
 
diff --git a/include/asm-mips/bootinfo.h b/include/asm-mips/bootinfo.h
index 14fc88f2722640bc364ad563f700cffc22e171c8..edf2b9a71c82f70bd3adbf0be77d868fa564787e 100644
--- a/include/asm-mips/bootinfo.h
+++ b/include/asm-mips/bootinfo.h
@@ -258,4 +258,10 @@ extern char arcs_cmdline[CL_SIZE];
  * Registers a0, a1, a3 and a4 as passed to the kenrel entry by firmware
  */
 extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
+
+/*
+ * Platform memory detection hook called by setup_arch
+ */
+extern void plat_mem_setup(void);
+
 #endif /* _ASM_BOOTINFO_H */