[U-Boot] [PATCH] nand/spl: Assuming a static nand page size to reduce code size

Matthew McClintock msm at freescale.com
Tue Apr 5 17:30:45 CEST 2011


Change variables to const to reduce code size, these values are
hardcoded via defines anyways so we might as well assume they
are constants

Signed-off-by: Matthew McClintock <msm at freescale.com>
cc: Scott Wood <scottwood at freescale.com>
---
With this change we can reduce the size of the nand_spl by
148 bytes with my particular board/compiler

 nand_spl/nand_boot_fsl_elbc.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/nand_spl/nand_boot_fsl_elbc.c b/nand_spl/nand_boot_fsl_elbc.c
index 9547d44..922284f 100644
--- a/nand_spl/nand_boot_fsl_elbc.c
+++ b/nand_spl/nand_boot_fsl_elbc.c
@@ -51,11 +51,11 @@ static void nand_load(unsigned int offs, int uboot_size, uchar *dst)
 {
 	fsl_lbc_t *regs = LBC_BASE_ADDR;
 	uchar *buf = (uchar *)CONFIG_SYS_NAND_BASE;
-	int large = in_be32(&regs->bank[0].or) & OR_FCM_PGS;
-	int block_shift = large ? 17 : 14;
-	int block_size = 1 << block_shift;
-	int page_size = large ? 2048 : 512;
-	int bad_marker = large ? page_size + 0 : page_size + 5;
+	const int large = CONFIG_NAND_OR_PRELIM & OR_FCM_PGS;
+	const int block_shift = large ? 17 : 14;
+	const int block_size = 1 << block_shift;
+	const int page_size = large ? 2048 : 512;
+	const int bad_marker = large ? page_size + 0 : page_size + 5;
 	int fmr = (15 << FMR_CWTO_SHIFT) | (2 << FMR_AL_SHIFT) | 2;
 	int pos = 0;
 
-- 
1.7.3.4




More information about the U-Boot mailing list