diff mbox

[U-Boot,v2] Decreases code size of the nand_spl

Message ID 4DC1A7F1.7000001@dawning.com
State Accepted
Headers show

Commit Message

Alex May 4, 2011, 7:24 p.m. UTC 
This patch decreases the code size of the nand_spl by turning multiple function
pointer dereferences in a single function into a single local function pointer.

Signed-off-by: Alex Waterman <awaterman@dawning.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Stefan Roese <sr@denx.de>
---
This works on my local board but I haven't tested it on anything else since I
do not have access to any other hardware. I did make sure the canyonlands board
still builds.

 nand_spl/nand_boot.c |   50 ++++++++++++++++++++++++++++----------------------
 1 files changed, 28 insertions(+), 22 deletions(-)

Comments

Wolfgang Denk May 12, 2011, 9:49 p.m. UTC | #1 
Dear Scott,

In message <4DC1A7F1.7000001@dawning.com> Alex Waterman wrote:
> This patch decreases the code size of the nand_spl by turning multiple function
> pointer dereferences in a single function into a single local function pointer.
> 
> Signed-off-by: Alex Waterman <awaterman@dawning.com>
> Cc: Scott Wood <scottwood@freescale.com>
> Cc: Stefan Roese <sr@denx.de>
> ---
> This works on my local board but I haven't tested it on anything else since I
> do not have access to any other hardware. I did make sure the canyonlands board
> still builds.
> 
>  nand_spl/nand_boot.c |   50 ++++++++++++++++++++++++++++----------------------
>  1 files changed, 28 insertions(+), 22 deletions(-)

Can this patch go in, please?  I would like to see the build problems
fixed.

Stefan, eventually you want to add your Tested-by: and/or Acked-by: ?

Best regards,

Wolfgang Denk
Scott Wood May 12, 2011, 9:57 p.m. UTC | #2 
On Thu, 12 May 2011 23:49:40 +0200
Wolfgang Denk <wd@denx.de> wrote:

> Dear Scott,
> 
> In message <4DC1A7F1.7000001@dawning.com> Alex Waterman wrote:
> > This patch decreases the code size of the nand_spl by turning multiple function
> > pointer dereferences in a single function into a single local function pointer.
> > 
> > Signed-off-by: Alex Waterman <awaterman@dawning.com>
> > Cc: Scott Wood <scottwood@freescale.com>
> > Cc: Stefan Roese <sr@denx.de>
> > ---
> > This works on my local board but I haven't tested it on anything else since I
> > do not have access to any other hardware. I did make sure the canyonlands board
> > still builds.
> > 
> >  nand_spl/nand_boot.c |   50 ++++++++++++++++++++++++++++----------------------
> >  1 files changed, 28 insertions(+), 22 deletions(-)
> 
> Can this patch go in, please?  I would like to see the build problems
> fixed.

Yes, sorry for the delay -- I'll try to get to it tomorrow.

-Scott
Wolfgang Denk May 12, 2011, 10 p.m. UTC | #3 
Dear Scott,

In message <20110512165759.0692384d@schlenkerla.am.freescale.net> you wrote:
> 
> > Can this patch go in, please?  I would like to see the build problems
> > fixed.
> 
> Yes, sorry for the delay -- I'll try to get to it tomorrow.

Thanks.  Guess you guys are as busy as evryone else ;-)

Best regards,

Wolfgang Denk
Stefan Roese May 13, 2011, 6:20 a.m. UTC | #4 
On Thursday 12 May 2011 23:49:40 Wolfgang Denk wrote:
> > This patch decreases the code size of the nand_spl by turning multiple
> > function pointer dereferences in a single function into a single local
> > function pointer.
> > 
> > Signed-off-by: Alex Waterman <awaterman@dawning.com>
> > Cc: Scott Wood <scottwood@freescale.com>
> > Cc: Stefan Roese <sr@denx.de>
> > ---
> > This works on my local board but I haven't tested it on anything else
> > since I do not have access to any other hardware. I did make sure the
> > canyonlands board still builds.
> > 
> >  nand_spl/nand_boot.c |   50
> >  ++++++++++++++++++++++++++++---------------------- 1 files changed, 28
> >  insertions(+), 22 deletions(-)
> 
> Can this patch go in, please?  I would like to see the build problems
> fixed.
> 
> Stefan, eventually you want to add your Tested-by: and/or Acked-by: ?

Sure:

Acked-by: Stefan Roese <sr@denx.de>

Thanks,
Stefan

--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office@denx.de
diff mbox

Patch

diff --git a/nand_spl/nand_boot.c b/nand_spl/nand_boot.c
index 4a96878..dd7f3b2 100644
--- a/nand_spl/nand_boot.c
+++ b/nand_spl/nand_boot.c
@@ -35,34 +35,37 @@  static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8
 {
 	struct nand_chip *this = mtd->priv;
 	int page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT;
+	void (*cmd_ctrl)(struct mtd_info *mtd, int cmd,
+			unsigned int ctrl) = this->cmd_ctrl;
+	int (*dev_ready)(struct mtd_info *mtd) = this->dev_ready;
 
-	if (this->dev_ready)
-		while (!this->dev_ready(mtd))
+	if (dev_ready != NULL)
+		while (!dev_ready(mtd))
 			;
 	else
 		CONFIG_SYS_NAND_READ_DELAY;
 
 	/* Begin command latch cycle */
-	this->cmd_ctrl(mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+	cmd_ctrl(mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
 	/* Set ALE and clear CLE to start address cycle */
 	/* Column address */
-	this->cmd_ctrl(mtd, offs, NAND_CTRL_ALE | NAND_CTRL_CHANGE);
-	this->cmd_ctrl(mtd, page_addr & 0xff, NAND_CTRL_ALE); /* A[16:9] */
-	this->cmd_ctrl(mtd, (page_addr >> 8) & 0xff,
+	cmd_ctrl(mtd, offs, NAND_CTRL_ALE | NAND_CTRL_CHANGE);
+	cmd_ctrl(mtd, page_addr & 0xff, NAND_CTRL_ALE); /* A[16:9] */
+	cmd_ctrl(mtd, (page_addr >> 8) & 0xff,
 		       NAND_CTRL_ALE); /* A[24:17] */
 #ifdef CONFIG_SYS_NAND_4_ADDR_CYCLE
 	/* One more address cycle for devices > 32MiB */
-	this->cmd_ctrl(mtd, (page_addr >> 16) & 0x0f,
+	cmd_ctrl(mtd, (page_addr >> 16) & 0x0f,
 		       NAND_CTRL_ALE); /* A[28:25] */
 #endif
 	/* Latch in address */
-	this->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+	cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
 	/*
 	 * Wait a while for the data to be ready
 	 */
-	if (this->dev_ready)
-		while (!this->dev_ready(mtd))
+	if (dev_ready != NULL)
+		while (!dev_ready(mtd))
 			;
 	else
 		CONFIG_SYS_NAND_READ_DELAY;
@@ -77,9 +80,12 @@  static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8
 {
 	struct nand_chip *this = mtd->priv;
 	int page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT;
+	void (*cmd_ctrl)(struct mtd_info *mtd, int cmd,
+			unsigned int ctrl) = this->cmd_ctrl;
+	int (*dev_ready)(struct mtd_info *mtd) = this->dev_ready;
 
-	if (this->dev_ready)
-		while (!this->dev_ready(mtd))
+	if (dev_ready != NULL)
+		while (!dev_ready(mtd))
 			;
 	else
 		CONFIG_SYS_NAND_READ_DELAY;
@@ -95,31 +101,31 @@  static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8
 		offs >>= 1;
 
 	/* Begin command latch cycle */
-	this->cmd_ctrl(mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+	cmd_ctrl(mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
 	/* Set ALE and clear CLE to start address cycle */
 	/* Column address */
-	this->cmd_ctrl(mtd, offs & 0xff,
+	cmd_ctrl(mtd, offs & 0xff,
 		       NAND_CTRL_ALE | NAND_CTRL_CHANGE); /* A[7:0] */
-	this->cmd_ctrl(mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
+	cmd_ctrl(mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
 	/* Row address */
-	this->cmd_ctrl(mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
-	this->cmd_ctrl(mtd, ((page_addr >> 8) & 0xff),
+	cmd_ctrl(mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
+	cmd_ctrl(mtd, ((page_addr >> 8) & 0xff),
 		       NAND_CTRL_ALE); /* A[27:20] */
 #ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE
 	/* One more address cycle for devices > 128MiB */
-	this->cmd_ctrl(mtd, (page_addr >> 16) & 0x0f,
+	cmd_ctrl(mtd, (page_addr >> 16) & 0x0f,
 		       NAND_CTRL_ALE); /* A[31:28] */
 #endif
 	/* Latch in address */
-	this->cmd_ctrl(mtd, NAND_CMD_READSTART,
+	cmd_ctrl(mtd, NAND_CMD_READSTART,
 		       NAND_CTRL_CLE | NAND_CTRL_CHANGE);
-	this->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+	cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
 	/*
 	 * Wait a while for the data to be ready
 	 */
-	if (this->dev_ready)
-		while (!this->dev_ready(mtd))
+	if (dev_ready != NULL)
+		while (!dev_ready(mtd))
 			;
 	else
 		CONFIG_SYS_NAND_READ_DELAY;