[U-Boot] [PATCH] Monahans: avoid floating point calculations

[Wolfgang Denk]

Current code for the Monahans CPU defined OSCR_CLK_FREQ as 3.250 (MHz)
which caused floating point operations to be used. This resulted in
unresolved references to some FP related libgcc functions when using
U-Boot's private libgcc functions.

Change the code to use fixed point math only.

Signed-off-by: Wolfgang Denk <wd at denx.de>
---
 board/delta/nand.c                  |    8 +++++---
 board/zylonite/nand.c               |    8 +++++---
 include/asm-arm/arch-pxa/pxa-regs.h |    2 +-
 3 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/board/delta/nand.c b/board/delta/nand.c
index e87d502..85a6ba2 100644
--- a/board/delta/nand.c
+++ b/board/delta/nand.c
@@ -193,7 +193,7 @@ static unsigned long get_delta(unsigned long start)
 static void wait_us(unsigned long us)
 {
 	unsigned long start = OSCR;
-	us *= OSCR_CLK_FREQ;
+	us = DIV_ROUND_UP(us * OSCR_CLK_FREQ, 1000);
 
 	while (get_delta(start) < us) {
 		/* do nothing */
@@ -214,9 +214,11 @@ static unsigned long dfc_wait_event(unsigned long event)
 	if(!event)
 		return 0xff000000;
 	else if(event & (NDSR_CS0_CMDD | NDSR_CS0_BBD))
-		timeout = CONFIG_SYS_NAND_PROG_ERASE_TO * OSCR_CLK_FREQ;
+		timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_PROG_ERASE_TO
+					* OSCR_CLK_FREQ, 1000);
 	else
-		timeout = CONFIG_SYS_NAND_OTHER_TO * OSCR_CLK_FREQ;
+		timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_OTHER_TO
+					* OSCR_CLK_FREQ, 1000);
 
 	while(1) {
 		ndsr = NDSR;
diff --git a/board/zylonite/nand.c b/board/zylonite/nand.c
index bec54cb..7cad1ac 100644
--- a/board/zylonite/nand.c
+++ b/board/zylonite/nand.c
@@ -198,7 +198,7 @@ static unsigned long get_delta(unsigned long start)
 static void wait_us(unsigned long us)
 {
 	unsigned long start = OSCR;
-	us *= OSCR_CLK_FREQ;
+	us = DIV_ROUND_UP(us * OSCR_CLK_FREQ, 1000);
 
 	while (get_delta(start) < us) {
 		/* do nothing */
@@ -219,9 +219,11 @@ static unsigned long dfc_wait_event(unsigned long event)
 	if(!event)
 		return 0xff000000;
 	else if(event & (NDSR_CS0_CMDD | NDSR_CS0_BBD))
-		timeout = CONFIG_SYS_NAND_PROG_ERASE_TO * OSCR_CLK_FREQ;
+		timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_PROG_ERASE_TO
+					* OSCR_CLK_FREQ, 1000);
 	else
-		timeout = CONFIG_SYS_NAND_OTHER_TO * OSCR_CLK_FREQ;
+		timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_OTHER_TO
+					* OSCR_CLK_FREQ, 1000);
 
 	while(1) {
 		ndsr = NDSR;
diff --git a/include/asm-arm/arch-pxa/pxa-regs.h b/include/asm-arm/arch-pxa/pxa-regs.h
index f34af19..45fbb94 100644
--- a/include/asm-arm/arch-pxa/pxa-regs.h
+++ b/include/asm-arm/arch-pxa/pxa-regs.h
@@ -1094,7 +1094,7 @@ typedef void		(*ExcpHndlr) (void) ;
 #define OMCR10		__REG(0x40A000D8)  /* OS Match Control Register 10 */
 #define OMCR11		__REG(0x40A000DC)  /* OS Match Control Register 11 */
 
-#define OSCR_CLK_FREQ	 3.250		   /* MHz */
+#define OSCR_CLK_FREQ	 3250		   /* kHz = 3.25 MHz */
 #endif /* CONFIG_CPU_MONAHANS */
 
 #define OSSR_M4		(1 << 4)	/* Match status channel 4 */
-- 
1.6.0.6