Merged POST framework with the current TOT.

Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>

Makefile

@@ -214,6 +214,8 @@ LIBS += drivers/sk98lin/libsk98lin.a
 LIBS += post/libpost.a post/drivers/libpostdrivers.a
 LIBS += $(shell if [ -d post/lib_$(ARCH) ]; then echo \
 	"post/lib_$(ARCH)/libpost$(ARCH).a"; fi)
+LIBS += $(shell if [ -d post/lib_$(ARCH)/fpu ]; then echo \
+	"post/lib_$(ARCH)/fpu/libpost$(ARCH)fpu.a"; fi)
 LIBS += $(shell if [ -d post/cpu/$(CPU) ]; then echo \
 	"post/cpu/$(CPU)/libpost$(CPU).a"; fi)
 LIBS += $(shell if [ -d post/board/$(BOARDDIR) ]; then echo \

cpu/ppc4xx/start.S

@@ -1217,15 +1217,23 @@ mck_return:
  * NOTE: currently the 440s run with dcache _disabled_ once relocated to DRAM,
  * although for some cache-ralated calls stubs have to be provided to satisfy
  * symbols resolution.
+ * Icache-related functions are used in POST framework.
  *
  */
 #ifdef CONFIG_440
        .globl  dcache_disable
+       .globl  icache_disable	
+       .globl  icache_enable
 dcache_disable:
+icache_disable:
+icache_enable:
 	blr
 
 	.globl	dcache_status
+	.globl	icache_status
 dcache_status:
+icache_status:
+	mr	r3,  0
 	blr
 #else
 flush_dcache:

include/configs/sequoia.h

@@ -334,10 +334,14 @@
 				 CFG_POST_CPU	   | \
 				 CFG_POST_UART	   | \
 				 CFG_POST_I2C	   | \
+				 CFG_POST_CACHE	   | \
+				 CFG_POST_FPU	   | \
+				 CFG_POST_ETHER	   | \
 				 CFG_POST_SPR)
 
 #define CFG_POST_WORD_ADDR	(CFG_GBL_DATA_OFFSET - 0x4)
 #define CONFIG_LOGBUFFER
+#define CFG_POST_CACHE_ADDR	0x10000000 /* free virtual address	*/
 
 #define CFG_CONSOLE_IS_IN_ENV /* Otherwise it catches logbuffer as output */
 

include/ppc440.h

@@ -282,7 +282,6 @@
 #define sdr_sdstp3	0x4003
 #endif	/* CONFIG_440GX */
 
-#ifdef CONFIG_440
 /*----------------------------------------------------------------------------+
 | Core Configuration/MMU configuration for 440 (CCR1 for 440x5 only).
 +----------------------------------------------------------------------------*/
@@ -306,7 +305,6 @@
 #define MMUCR_IULXE		0x00400000
 #define MMUCR_STS		0x00100000
 #define MMUCR_STID_MASK		0x000000FF
-#endif /* CONFIG_440 */
 
 #ifdef CONFIG_440SPE
 #undef sdr_sdstp2

post/cpu/mpc8xx/Makefile

@@ -24,6 +24,6 @@
 LIB	= libpostmpc8xx.a
 
 AOBJS	= cache_8xx.o
-COBJS	= ether.o spr.o uart.o usb.o watchdog.o
+COBJS	= cache.o ether.o spr.o uart.o usb.o watchdog.o
 
 include $(TOPDIR)/post/rules.mk

post/cpu/ppc4xx/Makefile

@@ -23,6 +23,7 @@
 
 LIB	= libpostppc4xx.a
 
-COBJS	= fpu.o spr.o uart.o watchdog.o
+AOBJS   = cache_4xx.o
+COBJS	= cache.o ether.o fpu.o spr.o uart.o watchdog.o
 
 include $(TOPDIR)/post/rules.mk

post/cpu/ppc4xx/cache.c

+/*
+ * (C) Copyright 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Author: Igor Lisitsin <igor@emcraft.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+/* Cache test
+ *
+ * This test verifies the CPU data and instruction cache using
+ * several test scenarios.
+ */
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+
+#if CONFIG_POST & CFG_POST_CACHE
+
+#include <asm/mmu.h>
+#include <watchdog.h>
+
+#define CACHE_POST_SIZE	1024
+
+void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value);
+
+int cache_post_test1 (int tlb, void *p, int size);
+int cache_post_test2 (int tlb, void *p, int size);
+int cache_post_test3 (int tlb, void *p, int size);
+int cache_post_test4 (int tlb, void *p, int size);
+int cache_post_test5 (int tlb, void *p, int size);
+int cache_post_test6 (int tlb, void *p, int size);
+
+static int tlb = -1;		/* index to the victim TLB entry */
+
+static unsigned char testarea[CACHE_POST_SIZE]
+__attribute__((__aligned__(CACHE_POST_SIZE)));
+
+int cache_post_test (int flags)
+{
+	void* virt = (void*)CFG_POST_CACHE_ADDR;
+	int ints, i, res = 0;
+	u32 word0;
+
+	if (tlb < 0) {
+		/*
+		 * Allocate a new TLB entry, since we are going to modify
+		 * the write-through and caching inhibited storage attributes.
+		 */
+		program_tlb((u32)testarea, (u32)virt,
+			    CACHE_POST_SIZE, TLB_WORD2_I_ENABLE);
+
+		/* Find the TLB entry */
+		for (i = 0;; i++) {
+			if (i >= PPC4XX_TLB_SIZE) {
+				printf ("Failed to program tlb entry\n");
+				return -1;
+			}
+			word0 = mftlb1(i);
+			if (TLB_WORD0_EPN_DECODE(word0) == (u32)virt) {
+				tlb = i;
+				break;
+			}
+		}
+	}
+	ints = disable_interrupts ();
+
+	WATCHDOG_RESET ();
+	if (res == 0)
+		res = cache_post_test1 (tlb, virt, CACHE_POST_SIZE);
+	WATCHDOG_RESET ();
+	if (res == 0)
+		res = cache_post_test2 (tlb, virt, CACHE_POST_SIZE);
+	WATCHDOG_RESET ();
+	if (res == 0)
+		res = cache_post_test3 (tlb, virt, CACHE_POST_SIZE);
+	WATCHDOG_RESET ();
+	if (res == 0)
+		res = cache_post_test4 (tlb, virt, CACHE_POST_SIZE);
+	WATCHDOG_RESET ();
+	if (res == 0)
+		res = cache_post_test5 (tlb, virt, CACHE_POST_SIZE);
+	WATCHDOG_RESET ();
+	if (res == 0)
+		res = cache_post_test6 (tlb, virt, CACHE_POST_SIZE);
+
+	if (ints)
+		enable_interrupts ();
+
+	return res;
+}
+
+#endif /* CONFIG_POST & CFG_POST_CACHE */
+#endif /* CONFIG_POST */

post/cpu/ppc4xx/cache_4xx.S

+/*
+ * (C) Copyright 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Author: Igor Lisitsin <igor@emcraft.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#if CONFIG_POST & CFG_POST_CACHE
+
+	.text
+
+/* void cache_post_disable (int tlb)
+ */
+cache_post_disable:
+	tlbre	r0, r3, 0x0002
+	ori	r0, r0, TLB_WORD2_I_ENABLE@l
+	tlbwe	r0, r3, 0x0002
+	sync
+	isync
+	blr
+
+/* void cache_post_wt (int tlb)
+ */
+cache_post_wt:
+	tlbre	r0, r3, 0x0002
+	ori	r0, r0, TLB_WORD2_W_ENABLE@l
+	andi.	r0, r0, ~TLB_WORD2_I_ENABLE@l
+	tlbwe	r0, r3, 0x0002
+	sync
+	isync
+	blr
+
+/* void cache_post_wb (int tlb)
+ */
+cache_post_wb:
+	tlbre	r0, r3, 0x0002
+	andi.	r0, r0, ~TLB_WORD2_W_ENABLE@l
+	andi.	r0, r0, ~TLB_WORD2_I_ENABLE@l
+	tlbwe	r0, r3, 0x0002
+	sync
+	isync
+	blr
+
+/* void cache_post_dinvalidate (void *p, int size)
+ */
+cache_post_dinvalidate:
+	dcbi	r0, r3
+	addi	r3, r3, CFG_CACHELINE_SIZE
+	subic.	r4, r4, CFG_CACHELINE_SIZE
+	bgt	cache_post_dinvalidate
+	sync
+	blr
+
+/* void cache_post_dstore (void *p, int size)
+ */
+cache_post_dstore:
+	dcbst	r0, r3
+	addi	r3, r3, CFG_CACHELINE_SIZE
+	subic.	r4, r4, CFG_CACHELINE_SIZE
+	bgt	cache_post_dstore
+	sync
+	blr
+
+/* void cache_post_dtouch (void *p, int size)
+ */
+cache_post_dtouch:
+	dcbt	r0, r3
+	addi	r3, r3, CFG_CACHELINE_SIZE
+	subic.	r4, r4, CFG_CACHELINE_SIZE
+	bgt	cache_post_dtouch
+	sync
+	blr
+
+/* void cache_post_iinvalidate (void)
+ */
+cache_post_iinvalidate:
+	iccci	r0, r0
+	sync
+	blr
+
+/* void cache_post_memset (void *p, int val, int size)
+ */
+cache_post_memset:
+	mtctr	r5
+1:
+	stb	r4, 0(r3)
+	addi	r3, r3, 1
+	bdnz	1b
+	blr
+
+/* int cache_post_check (void *p, int size)
+ */
+cache_post_check:
+	mtctr	r4
+1:
+	lbz	r0, 0(r3)
+	addi	r3, r3, 1
+	cmpwi	r0, 0xff
+	bne	2f
+	bdnz	1b
+	li	r3, 0
+	blr
+2:
+	li	r3, -1
+	blr
+
+#define CACHE_POST_DISABLE()		\
+	mr	r3, r10;		\
+	bl	cache_post_disable
+
+#define CACHE_POST_WT()			\
+	mr	r3, r10;		\
+	bl	cache_post_wt
+
+#define CACHE_POST_WB()			\
+	mr	r3, r10;		\
+	bl	cache_post_wb
+
+#define CACHE_POST_DINVALIDATE()	\
+	mr	r3, r11;		\
+	mr	r4, r12;		\
+	bl	cache_post_dinvalidate
+
+#define CACHE_POST_DFLUSH()		\
+	mr	r3, r11;		\
+	mr	r4, r12;		\
+	bl	cache_post_dflush
+
+#define CACHE_POST_DSTORE()		\
+	mr	r3, r11;		\
+	mr	r4, r12;		\
+	bl	cache_post_dstore
+
+#define CACHE_POST_DTOUCH()		\
+	mr	r3, r11;		\
+	mr	r4, r12;		\
+	bl	cache_post_dtouch
+
+#define CACHE_POST_IINVALIDATE()	\
+	bl	cache_post_iinvalidate
+
+#define CACHE_POST_MEMSET(val)		\
+	mr	r3, r11;		\
+	li	r4, val;		\
+	mr	r5, r12;		\
+	bl	cache_post_memset
+
+#define CACHE_POST_CHECK()		\
+	mr	r3, r11;		\
+	mr	r4, r12;		\
+	bl	cache_post_check;	\
+	mr	r13, r3
+
+/*
+ * Write and read 0xff pattern with caching enabled.
+ */
+	.global cache_post_test1
+cache_post_test1:
+	mflr	r9
+	mr	r10, r3		/* tlb		*/
+	mr	r11, r4		/* p		*/
+	mr	r12, r5		/* size		*/
+
+	CACHE_POST_WB()
+	CACHE_POST_DINVALIDATE()
+
+	/* Write the negative pattern to the test area */
+	CACHE_POST_MEMSET(0xff)
+
+	/* Read the test area */
+	CACHE_POST_CHECK()
+
+	CACHE_POST_DINVALIDATE()
+	CACHE_POST_DISABLE()
+
+	mr	r3, r13
+	mtlr	r9
+	blr
+
+/*
+ * Write zeroes with caching enabled.
+ * Write 0xff pattern with caching disabled.
+ * Read 0xff pattern with caching enabled.
+ */
+	.global cache_post_test2
+cache_post_test2:
+	mflr	r9
+	mr	r10, r3		/* tlb		*/
+	mr	r11, r4		/* p		*/
+	mr	r12, r5		/* size		*/
+
+	CACHE_POST_WB()
+	CACHE_POST_DINVALIDATE()
+
+	/* Write the zero pattern to the test area */
+	CACHE_POST_MEMSET(0)
+
+	CACHE_POST_DINVALIDATE()
+	CACHE_POST_DISABLE()
+
+	/* Write the negative pattern to the test area */
+	CACHE_POST_MEMSET(0xff)
+
+	CACHE_POST_WB()
+
+	/* Read the test area */
+	CACHE_POST_CHECK()
+
+	CACHE_POST_DINVALIDATE()
+	CACHE_POST_DISABLE()
+
+	mr	r3, r13
+	mtlr	r9
+	blr
+
+/*
+ * Write-through mode test.
+ * Write zeroes, store the cache, write 0xff pattern.
+ * Invalidate the cache.
+ * Check that 0xff pattern is read.
+ */
+	.global cache_post_test3
+cache_post_test3:
+	mflr	r9
+	mr	r10, r3		/* tlb		*/
+	mr	r11, r4		/* p		*/
+	mr	r12, r5		/* size		*/
+
+	CACHE_POST_WT()
+	CACHE_POST_DINVALIDATE()
+
+	/* Cache the test area */
+	CACHE_POST_DTOUCH()
+
+	/* Write the zero pattern to the test area */
+	CACHE_POST_MEMSET(0)
+
+	CACHE_POST_DSTORE()
+
+	/* Write the negative pattern to the test area */
+	CACHE_POST_MEMSET(0xff)
+
+	CACHE_POST_DINVALIDATE()
+	CACHE_POST_DISABLE()
+
+	/* Read the test area */
+	CACHE_POST_CHECK()
+
+	mr	r3, r13
+	mtlr	r9
+	blr
+
+/*
+ * Write-back mode test.
+ * Write 0xff pattern, store the cache, write zeroes.
+ * Invalidate the cache.
+ * Check that 0xff pattern is read.
+ */
+	.global cache_post_test4
+cache_post_test4:
+	mflr	r9
+	mr	r10, r3		/* tlb		*/
+	mr	r11, r4		/* p		*/
+	mr	r12, r5		/* size		*/
+
+	CACHE_POST_WB()
+	CACHE_POST_DINVALIDATE()
+
+	/* Cache the test area */
+	CACHE_POST_DTOUCH()
+
+	/* Write the negative pattern to the test area */
+	CACHE_POST_MEMSET(0xff)
+
+	CACHE_POST_DSTORE()
+
+	/* Write the zero pattern to the test area */
+	CACHE_POST_MEMSET(0)
+
+	CACHE_POST_DINVALIDATE()
+	CACHE_POST_DISABLE()
+
+	/* Read the test area */
+	CACHE_POST_CHECK()
+
+	mr	r3, r13
+	mtlr	r9
+	blr
+
+/*
+ * Load the test instructions into the instruction cache.
+ * Replace the test instructions.
+ * Check that the original instructions are executed.
+ */
+	.global cache_post_test5
+cache_post_test5:
+	mflr	r9
+	mr	r10, r3		/* tlb		*/
+	mr	r11, r4		/* p		*/
+	mr	r12, r5		/* size		*/
+
+	CACHE_POST_WT()
+	CACHE_POST_IINVALIDATE()
+
+	/* Compute r13 = cache_post_test_inst */
+	bl	cache_post_test5_reloc
+cache_post_test5_reloc:
+	mflr	r13
+	lis	r0, (cache_post_test_inst - cache_post_test5_reloc)@h
+	ori	r0, r0, (cache_post_test_inst - cache_post_test5_reloc)@l
+	add	r13, r13, r0
+
+	/* Copy the test instructions to the test area */
+	lwz	r0, 0(r13)
+	stw	r0, 0(r11)
+	lwz	r0, 8(r13)
+	stw	r0, 4(r11)
+	sync
+
+	/* Invalidate the cache line */
+	icbi	r0, r11
+	sync
+	isync
+
+	/* Execute the test instructions */
+	mtlr	r11
+	blrl
+
+	/* Replace the test instruction */
+	lwz	r0, 4(r13)
+	stw	r0, 0(r11)
+	sync
+
+	/* Do not invalidate the cache line */
+	isync
+
+	/* Execute the test instructions */
+	mtlr	r11
+	blrl
+	mr	r13, r3
+
+	CACHE_POST_IINVALIDATE()
+	CACHE_POST_DINVALIDATE()
+	CACHE_POST_DISABLE()
+
+	mr	r3, r13
+	mtlr	r9
+	blr
+
+/*
+ * Load the test instructions into the instruction cache.
+ * Replace the test instructions and invalidate the cache.
+ * Check that the replaced instructions are executed.
+ */
+	.global cache_post_test6
+cache_post_test6:
+	mflr	r9
+	mr	r10, r3		/* tlb		*/
+	mr	r11, r4		/* p		*/
+	mr	r12, r5		/* size		*/
+
+	CACHE_POST_WT()
+	CACHE_POST_IINVALIDATE()
+
+	/* Compute r13 = cache_post_test_inst */
+	bl	cache_post_test6_reloc
+cache_post_test6_reloc:
+	mflr	r13
+	lis	r0, (cache_post_test_inst - cache_post_test6_reloc)@h
+	ori	r0, r0, (cache_post_test_inst - cache_post_test6_reloc)@l
+	add	r13, r13, r0
+
+	/* Copy the test instructions to the test area */
+	lwz	r0, 4(r13)
+	stw	r0, 0(r11)
+	lwz	r0, 8(r13)
+	stw	r0, 4(r11)
+	sync
+
+	/* Invalidate the cache line */
+	icbi	r0, r11
+	sync
+	isync
+
+	/* Execute the test instructions */
+	mtlr	r11
+	blrl
+
+	/* Replace the test instruction */
+	lwz	r0, 0(r13)
+	stw	r0, 0(r11)
+	sync
+
+	/* Invalidate the cache line */
+	icbi	r0, r11
+	sync
+	isync
+
+	/* Execute the test instructions */
+	mtlr	r11
+	blrl
+	mr	r13, r3
+
+	CACHE_POST_IINVALIDATE()
+	CACHE_POST_DINVALIDATE()
+	CACHE_POST_DISABLE()
+
+	mr	r3, r13
+	mtlr	r9
+	blr
+
+/* Test instructions.
+ */	
+cache_post_test_inst:
+	li	r3, 0
+	li	r3, -1
+	blr
+
+#endif /* CONFIG_POST & CFG_POST_CACHE */
+#endif /* CONFIG_POST */

post/cpu/ppc4xx/ether.c

+/*
+ * (C) Copyright 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Author: Igor Lisitsin <igor@emcraft.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+/*
+ * Ethernet test
+ *
+ * The Ethernet Media Access Controllers (EMAC) are tested in the
+ * internal loopback mode.
+ * The controllers are configured accordingly and several packets
+ * are transmitted. The configurable test parameters are:
+ *   MIN_PACKET_LENGTH - minimum size of packet to transmit
+ *   MAX_PACKET_LENGTH - maximum size of packet to transmit
+ *   TEST_NUM - number of tests
+ */
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+
+#if CONFIG_POST & CFG_POST_ETHER
+
+#include <asm/cache.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <405_mal.h>
+#include <ppc4xx_enet.h>
+#include <malloc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_440SPE) || defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+#define SDR0_MFR_ETH_CLK_SEL_V(n)	((0x01<<27) / (n+1))
+#endif
+
+#define MIN_PACKET_LENGTH	64
+#define MAX_PACKET_LENGTH	256
+#define TEST_NUM		1
+
+static volatile mal_desc_t tx __cacheline_aligned;
+static volatile mal_desc_t rx __cacheline_aligned;
+static char *tx_buf;
+static char *rx_buf;
+
+static void ether_post_init (int devnum, int hw_addr)
+{
+	int i;
+	unsigned mode_reg;
+#if defined(CONFIG_440GX) || \
+    defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+    defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+	sys_info_t sysinfo;
+#endif
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || defined(CONFIG_440SPE)
+	unsigned long mfr;
+#endif
+
+#if defined(CONFIG_440GX) || \
+    defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+    defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+	/* Need to get the OPB frequency so we can access the PHY */
+	get_sys_info (&sysinfo);
+#endif
+
+#if defined(CONFIG_440SPE) || defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	/* provide clocks for EMAC internal loopback  */
+	mfsdr (sdr_mfr, mfr);
+	mfr |= SDR0_MFR_ETH_CLK_SEL_V(devnum);
+	mtsdr (sdr_mfr, mfr);
+	sync ();
+#endif
+	/* reset emac */
+	out32 (EMAC_M0 + hw_addr, EMAC_M0_SRST);
+	sync ();
+
+	for (i = 0;; i++) {
+		if (!(in32 (EMAC_M0 + hw_addr) & EMAC_M0_SRST))
+			break;
+		if (i >= 1000) {
+			printf ("Timeout resetting EMAC\n");
+			break;
+		}
+		udelay (1000);
+	}
+#if defined(CONFIG_440GX) || \
+    defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+    defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+	/* Whack the M1 register */
+	mode_reg = 0x0;
+	if (sysinfo.freqOPB <= 50000000);
+	else if (sysinfo.freqOPB <= 66666667)
+		mode_reg |= EMAC_M1_OBCI_66;
+	else if (sysinfo.freqOPB <= 83333333)
+		mode_reg |= EMAC_M1_OBCI_83;
+	else if (sysinfo.freqOPB <= 100000000)
+		mode_reg |= EMAC_M1_OBCI_100;
+	else
+		mode_reg |= EMAC_M1_OBCI_GT100;
+
+	out32 (EMAC_M1 + hw_addr, mode_reg);
+
+#endif /* defined(CONFIG_440GX) || defined(CONFIG_440SP) */
+
+	/* set the Mal configuration reg */
+#if defined(CONFIG_440GX) || \
+    defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+    defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+	mtdcr (malmcr, MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA |
+	       MAL_CR_PLBLT_DEFAULT | 0x00330000);
+#else
+	mtdcr (malmcr, MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA | MAL_CR_PLBLT_DEFAULT);
+	/* Errata 1.12: MAL_1 -- Disable MAL bursting */
+	if (get_pvr() == PVR_440GP_RB) {
+		mtdcr (malmcr, mfdcr(malmcr) & ~MAL_CR_PLBB);
+	}
+#endif
+	/* setup buffer descriptors */
+	tx.ctrl = MAL_TX_CTRL_WRAP;
+	tx.data_len = 0;
+	tx.data_ptr = (char*)L1_CACHE_ALIGN((u32)tx_buf);
+
+	rx.ctrl = MAL_TX_CTRL_WRAP | MAL_RX_CTRL_EMPTY;
+	rx.data_len = 0;
+	rx.data_ptr = (char*)L1_CACHE_ALIGN((u32)rx_buf);
+
+	switch (devnum) {
+	case 1:
+		/* setup MAL tx & rx channel pointers */
+#if defined (CONFIG_405EP) || defined (CONFIG_440EP) || defined (CONFIG_440GR)
+		mtdcr (maltxctp2r, &tx);
+#else
+		mtdcr (maltxctp1r, &tx);
+#endif
+#if defined(CONFIG_440)
+		mtdcr (maltxbattr, 0x0);
+		mtdcr (malrxbattr, 0x0);
+#endif
+		mtdcr (malrxctp1r, &rx);
+		/* set RX buffer size */
+		mtdcr (malrcbs1, PKTSIZE_ALIGN / 16);
+		break;
+	case 0:
+	default:
+		/* setup MAL tx & rx channel pointers */
+#if defined(CONFIG_440)
+		mtdcr (maltxbattr, 0x0);
+		mtdcr (malrxbattr, 0x0);
+#endif
+		mtdcr (maltxctp0r, &tx);
+		mtdcr (malrxctp0r, &rx);
+		/* set RX buffer size */
+		mtdcr (malrcbs0, PKTSIZE_ALIGN / 16);
+		break;
+	}
+
+	/* Enable MAL transmit and receive channels */
+#if defined(CONFIG_405EP) || defined(CONFIG_440EP) || defined(CONFIG_440GR)
+	mtdcr (maltxcasr, (MAL_TXRX_CASR >> (devnum*2)));
+#else
+	mtdcr (maltxcasr, (MAL_TXRX_CASR >> devnum));
+#endif
+	mtdcr (malrxcasr, (MAL_TXRX_CASR >> devnum));
+
+	/* set internal loopback mode */
+	out32 (EMAC_M1 + hw_addr, EMAC_M1_FDE | EMAC_M1_ILE |
+	       EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K |
+	       EMAC_M1_MF_100MBPS | EMAC_M1_IST |
+	       in32 (EMAC_M1));
+
+	/* set transmit enable & receive enable */
+	out32 (EMAC_M0 + hw_addr, EMAC_M0_TXE | EMAC_M0_RXE);
+
+	/* enable broadcast address */
+	out32 (EMAC_RXM + hw_addr, EMAC_RMR_BAE);
+
+	/* set transmit request threshold register */
+	out32 (EMAC_TRTR + hw_addr, 0x18000000);	/* 256 byte threshold */
+
+	/* set receive	low/high water mark register */
+#if defined(CONFIG_440)
+	/* 440s has a 64 byte burst length */
+	out32 (EMAC_RX_HI_LO_WMARK + hw_addr, 0x80009000);
+#else
+	/* 405s have a 16 byte burst length */
+	out32 (EMAC_RX_HI_LO_WMARK + hw_addr, 0x0f002000);
+#endif /* defined(CONFIG_440) */
+	out32 (EMAC_TXM1 + hw_addr, 0xf8640000);
+
+	/* Set fifo limit entry in tx mode 0 */
+	out32 (EMAC_TXM0 + hw_addr, 0x00000003);
+	/* Frame gap set */
+	out32 (EMAC_I_FRAME_GAP_REG + hw_addr, 0x00000008);
+	sync ();
+}
+
+static void ether_post_halt (int devnum, int hw_addr)
+{
+	int i = 0;
+#if defined(CONFIG_440SPE) || defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	unsigned long mfr;
+#endif
+
+	/* 1st reset MAL channel */
+	/* Note: writing a 0 to a channel has no effect */
+#if defined(CONFIG_405EP) || defined(CONFIG_440EP) || defined(CONFIG_440GR)
+	mtdcr (maltxcarr, MAL_TXRX_CASR >> (devnum * 2));
+#else
+	mtdcr (maltxcarr, MAL_TXRX_CASR >> devnum);
+#endif
+	mtdcr (malrxcarr, MAL_TXRX_CASR >> devnum);
+
+	/* wait for reset */
+	while (mfdcr (malrxcasr) & (MAL_TXRX_CASR >> devnum)) {
+		if (i++ >= 1000)
+			break;
+		udelay (1000);
+	}
+	/* emac reset */
+	out32 (EMAC_M0 + hw_addr, EMAC_M0_SRST);
+
+#if defined(CONFIG_440SPE) || defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	/* remove clocks for EMAC internal loopback  */
+	mfsdr (sdr_mfr, mfr);
+	mfr &= ~SDR0_MFR_ETH_CLK_SEL_V(devnum);
+	mtsdr (sdr_mfr, mfr);
+#endif
+}
+
+static void ether_post_send (int devnum, int hw_addr, void *packet, int length)
+{
+	int i = 0;
+
+	while (tx.ctrl & MAL_TX_CTRL_READY) {
+		if (i++ > 100) {
+			printf ("TX timeout\n");
+			return;
+		}
+		udelay (1000);
+	}
+	tx.ctrl = MAL_TX_CTRL_READY | MAL_TX_CTRL_WRAP | MAL_TX_CTRL_LAST |
+		EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP;
+	tx.data_len = length;
+	memcpy (tx.data_ptr, packet, length);
+	sync ();
+
+	out32 (EMAC_TXM0 + hw_addr, in32 (EMAC_TXM0 + hw_addr) | EMAC_TXM0_GNP0);
+	sync ();
+}
+
+static int ether_post_recv (int devnum, int hw_addr, void *packet, int max_length)
+{
+	int length;
+	int i = 0;
+
+	while (rx.ctrl & MAL_RX_CTRL_EMPTY) {
+		if (i++ > 100) {
+			printf ("RX timeout\n");
+			return 0;
+		}
+		udelay (1000);
+	}
+	length = rx.data_len - 4;
+	if (length <= max_length)
+		memcpy(packet, rx.data_ptr, length);
+	sync ();
+
+	rx.ctrl |= MAL_RX_CTRL_EMPTY;
+	sync ();
+
+	return length;
+}
+
+  /*
+   * Test routines
+   */
+
+static void packet_fill (char *packet, int length)
+{
+	char c = (char) length;
+	int i;
+
+	/* set up ethernet header */
+	memset (packet, 0xff, 14);
+
+	for (i = 14; i < length; i++) {
+		packet[i] = c++;
+	}
+}
+
+static int packet_check (char *packet, int length)
+{
+	char c = (char) length;
+	int i;
+
+	for (i = 14; i < length; i++) {
+		if (packet[i] != c++)
+			return -1;
+	}
+
+	return 0;
+}
+
+static int test_ctlr (int devnum, int hw_addr)
+{
+	int res = -1;
+	char packet_send[MAX_PACKET_LENGTH];
+	char packet_recv[MAX_PACKET_LENGTH];
+	int length;
+	int i;
+	int l;
+
+	ether_post_init (devnum, hw_addr);
+
+	for (i = 0; i < TEST_NUM; i++) {
+		for (l = MIN_PACKET_LENGTH; l <= MAX_PACKET_LENGTH; l++) {
+			packet_fill (packet_send, l);
+
+			ether_post_send (devnum, hw_addr, packet_send, l);
+
+			length = ether_post_recv (devnum, hw_addr, packet_recv,
+						  sizeof (packet_recv));
+
+			if (length != l || packet_check (packet_recv, length) < 0) {
+				goto Done;
+			}
+		}
+	}
+
+	res = 0;
+
+Done:
+
+	ether_post_halt (devnum, hw_addr);
+
+	if (res != 0) {
+		post_log ("EMAC%d test failed\n", devnum);
+	}
+
+	return res;
+}
+
+int ether_post_test (int flags)
+{
+	int res = 0;
+
+	/* Allocate tx & rx packet buffers */
+	tx_buf = malloc (PKTSIZE_ALIGN + CFG_CACHELINE_SIZE);
+	rx_buf = malloc (PKTSIZE_ALIGN + CFG_CACHELINE_SIZE);
+
+	if (!tx_buf || !rx_buf) {
+		printf ("Failed to allocate packet buffers\n");
+		res = -1;
+		goto out_free;
+	}
+
+	/* EMAC0 */
+	if (test_ctlr (0, 0))
+		res = -1;
+
+	/* EMAC1 */
+	if (test_ctlr (1, 0x100))
+		res = -1;
+
+out_free:
+	free (tx_buf);
+	free (rx_buf);
+
+	return res;
+}
+
+#endif /* CONFIG_POST & CFG_POST_ETHER */
+#endif /* CONFIG_POST */

post/cpu/ppc4xx/fpu.c

 /*
- *  Copyright (C) 2007 Wolfgang Denk <wd@denx.de>
+ * (C) Copyright 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Author: Sergei Poselenov <sposelenov@emcraft.com>
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -51,5 +54,6 @@ void fpu_enable(void)
 	mtspr(ccr0, mfspr(ccr0) & ~CCR0_DAPUIB);
 	mtmsr(mfmsr() | MSR_FP);
 }
+
 #endif
-#endif
+#endif /* CONFIG_POST */

post/cpu/ppc4xx/spr.c

@@ -2,6 +2,8 @@
  * (C) Copyright 2007
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
+ * Author: Igor Lisitsin <igor@emcraft.com>
+ *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
@@ -39,6 +41,8 @@
 
 #if CONFIG_POST & CFG_POST_SPR
 
+#include <asm/processor.h>
+
 static struct
 {
     int number;
@@ -60,8 +64,10 @@ static struct
 	{0x113,	"SPRG3",	0x00000000,	0x00000000},
 	{0x11f,	"PVR",		0x00000000,	0x00000000},
 
-	/* Additional Special-Purpose Registers */
-
+	/* Additional Special-Purpose Registers.
+	 * The values must match the initialization 
+	 * values from cpu/ppc4xx/start.S
+	 */
 	{0x30,	"PID",		0x00000000,	0x00000000},
 	{0x3a,	"CSRR0",	0x00000000,	0x00000000},
 	{0x3b,	"CSRR1",	0x00000000,	0x00000000},
@@ -90,22 +96,22 @@ static struct
 	{0x13f,	"DVC2",		0x00000000,	0x00000000},
 	{0x150,	"TSR",		0x00000000,	0x00000000},
 	{0x154,	"TCR",		0x00000000,	0x00000000},
-	{0x190,	"IVOR0",	0x00000000,	0x00000000},
-	{0x191,	"IVOR1",	0x00000000,	0x00000000},
-	{0x192,	"IVOR2",	0x00000000,	0x00000000},
-	{0x193,	"IVOR3",	0x00000000,	0x00000000},
-	{0x194,	"IVOR4",	0x00000000,	0x00000000},
-	{0x195,	"IVOR5",	0x00000000,	0x00000000},
-	{0x196,	"IVOR6",	0x00000000,	0x00000000},
-	{0x197,	"IVOR7",	0x00000000,	0x00000000},
-	{0x198,	"IVOR8",	0x00000000,	0x00000000},
+	{0x190,	"IVOR0",	0x0000fff0,	0x00000100},
+	{0x191,	"IVOR1",	0x0000fff0,	0x00000200},
+	{0x192,	"IVOR2",	0x0000fff0,	0x00000300},
+	{0x193,	"IVOR3",	0x0000fff0,	0x00000400},
+	{0x194,	"IVOR4",	0x0000fff0,	0x00000500},
+	{0x195,	"IVOR5",	0x0000fff0,	0x00000600},
+	{0x196,	"IVOR6",	0x0000fff0,	0x00000700},
+	{0x197,	"IVOR7",	0x0000fff0,	0x00000800},
+	{0x198,	"IVOR8",	0x0000fff0,	0x00000c00},
 	{0x199,	"IVOR9",	0x00000000,	0x00000000},
-	{0x19a,	"IVOR10",	0x00000000,	0x00000000},
+	{0x19a,	"IVOR10",	0x0000fff0,	0x00000900},
 	{0x19b,	"IVOR11",	0x00000000,	0x00000000},
 	{0x19c,	"IVOR12",	0x00000000,	0x00000000},
-	{0x19d,	"IVOR13",	0x00000000,	0x00000000},
-	{0x19e,	"IVOR14",	0x00000000,	0x00000000},
-	{0x19f,	"IVOR15",	0x00000000,	0x00000000},
+	{0x19d,	"IVOR13",	0x0000fff0,	0x00001300},
+	{0x19e,	"IVOR14",	0x0000fff0,	0x00001400},
+	{0x19f,	"IVOR15",	0x0000fff0,	0x00002000},
 	{0x23a,	"MCSRR0",	0x00000000,	0x00000000},
 	{0x23b,	"MCSRR1",	0x00000000,	0x00000000},
 	{0x23c,	"MCSR",		0x00000000,	0x00000000},
@@ -126,8 +132,8 @@ static struct
 	{0x395,	"DTV1",		0x00000000,	0x00000000},
 	{0x396,	"DTV2",		0x00000000,	0x00000000},
 	{0x397,	"DTV3",		0x00000000,	0x00000000},
-	{0x398,	"DVLIM",	0x00000000,	0x00000000},
-	{0x399,	"IVLIM",	0x00000000,	0x00000000},
+	{0x398,	"DVLIM",	0x0fc1f83f,	0x0001f800},
+	{0x399,	"IVLIM",	0x0fc1f83f,	0x0001f800},
 	{0x39b,	"RSTCFG",	0x00000000,	0x00000000},
 	{0x39c,	"DCDBTRL",	0x00000000,	0x00000000},
 	{0x39d,	"DCDBTRH",	0x00000000,	0x00000000},
@@ -172,5 +178,6 @@ int spr_post_test (int flags)
 
 	return ret;
 }
+
 #endif /* CONFIG_POST & CFG_POST_SPR */
 #endif /* CONFIG_POST */

post/cpu/ppc4xx/uart.c

@@ -2,6 +2,8 @@
  * (C) Copyright 2007
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
+ * Author: Igor Lisitsin <igor@emcraft.com>
+ *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
@@ -210,5 +212,4 @@ int uart_post_test (int flags)
 }
 
 #endif /* CONFIG_POST & CFG_POST_UART */
-
 #endif /* CONFIG_POST */

post/cpu/ppc4xx/watchdog.c

@@ -2,6 +2,8 @@
  * (C) Copyright 2007
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
+ * Author: Igor Lisitsin <igor@emcraft.com>
+ *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
@@ -36,17 +38,18 @@
 #ifdef CONFIG_POST
 
 #include <post.h>
-#include <watchdog.h>
 
 #if CONFIG_POST & CFG_POST_WATCHDOG
 
+#include <watchdog.h>
+
 int watchdog_post_test (int flags)
 {
 	if (flags & POST_REBOOT) {
 		/* Test passed */
-
 		return 0;
-	} else {
+	}
+	else {
 		/* 10-second delay */
 		int ints = disable_interrupts ();
 		ulong base = post_time_ms (0);

post/drivers/Makefile

@@ -26,6 +26,6 @@ SUBDIRS =
 
 LIB	= libpostdrivers.a
 
-COBJS	= cache.o i2c.o memory.o rtc.o
+COBJS	= i2c.o memory.o rtc.o
 
 include $(TOPDIR)/post/rules.mk

post/lib_ppc/Makefile

@@ -21,6 +21,7 @@
 # MA 02111-1307 USA
 #
 
+SUBDIRS = fpu
 
 LIB	= libpostppc.a
 

post/lib_ppc/fpu/20001122-1.c

+/*
+ * Copyright (C) 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+/*
+ * This file is originally a part of the GCC testsuite.
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+
+#if CONFIG_POST & CFG_POST_FPU
+
+int fpu_post_test_math1 (void)
+{
+	volatile double a, *p;
+	double c, d;
+	volatile double b;
+
+	d = 1.0;
+	p = &b;
+
+	do
+	{
+		c = d;
+		d = c * 0.5;
+		b = 1 + d;
+	} while (b != 1.0);
+
+	a = 1.0 + c;
+
+	if (a == 1.0) {
+		post_log ("Error in FPU math1 test\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+#endif /* CONFIG_POST & CFG_POST_FPU */
+#endif /* CONFIG_POST */

post/lib_ppc/fpu/20010114-2.c

+/*
+ * Copyright (C) 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+/*
+ * This file is originally a part of the GCC testsuite.
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+
+#if CONFIG_POST & CFG_POST_FPU
+
+static float rintf (float x)
+{
+	volatile float TWO23 = 8388608.0;
+
+	if (__builtin_fabs (x) < TWO23)
+	{
+		if (x > 0.0)
+		{
+			x += TWO23;
+			x -= TWO23;
+		}
+		else if (x < 0.0)
+		{
+			x = TWO23 - x;
+			x = -(x - TWO23);
+		}
+	}
+
+	return x;
+}
+
+int fpu_post_test_math2 (void)
+{
+	if (rintf (-1.5) != -2.0) {
+		post_log ("Error in FPU math2 test\n");
+		return -1;
+	}
+	return 0;
+}
+
+#endif /* CONFIG_POST & CFG_POST_FPU */
+#endif /* CONFIG_POST */

post/lib_ppc/fpu/20010226-1.c

+/*
+ * Copyright (C) 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+/*
+ * This file is originally a part of the GCC testsuite.
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+
+#if CONFIG_POST & CFG_POST_FPU
+
+int fpu_post_test_math3 (void)
+{
+	volatile long double dfrom = 1.1;
+	volatile long double m1;
+	volatile long double m2;
+	volatile unsigned long mant_long;
+
+	m1 = dfrom / 2.0;
+	m2 = m1 * 4294967296.0;
+	mant_long = ((unsigned long) m2) & 0xffffffff;
+
+	if (mant_long != 0x8ccccccc) {
+		post_log ("Error in FPU math3 test\n");
+		return -1;
+	}
+	return 0;
+}
+
+#endif /* CONFIG_POST & CFG_POST_FPU */
+#endif /* CONFIG_POST */

post/lib_ppc/fpu/980619-1.c

+/*
+ * Copyright (C) 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+/*
+ * This file is originally a part of the GCC testsuite.
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+
+#if CONFIG_POST & CFG_POST_FPU
+
+int fpu_post_test_math4 (void)
+{
+	volatile float reale = 1.0f;
+	volatile float oneplus;
+	int i;
+
+	if (sizeof (float) != 4)
+		return 0;
+
+	for (i = 0; ; i++)
+	{
+		oneplus = 1.0f + reale;
+		if (oneplus == 1.0f)
+			break;
+		reale = reale / 2.0f;
+	}
+	/* Assumes ieee754 accurate arithmetic above.  */
+	if (i != 24) {
+		post_log ("Error in FPU math4 test\n");
+		return -1;
+	}
+	return 0;
+}
+
+#endif /* CONFIG_POST & CFG_POST_FPU */
+#endif /* CONFIG_POST */