Re: [U-Boot] [PATCH 1/1] omap3evm: Support for fast boot

2010-10-26 Thread Premi, Sanjeev 
 -Original Message-
 From: u-boot-boun...@lists.denx.de 
 [mailto:u-boot-boun...@lists.denx.de] On Behalf Of Premi, Sanjeev
 Sent: Tuesday, October 19, 2010 10:25 PM
 To: Loïc Minier
 Cc: u-boot@lists.denx.de
 Subject: Re: [U-Boot] [PATCH 1/1] omap3evm: Support for fast boot
 
  -Original Message-
  From: Loïc Minier [mailto:l...@dooz.org] 
  Sent: Tuesday, October 19, 2010 10:14 PM
  To: Premi, Sanjeev
  Cc: u-boot@lists.denx.de
  Subject: Re: [U-Boot] [PATCH 1/1] omap3evm: Support for fast boot
  
  On Tue, Oct 19, 2010, Sanjeev Premi wrote:
   +#undef CONFIG_FAST_BOOT
  
   I wonder whether CONFIG_FAST_BOOT would cause confusion if 
  u-boot gains
   support for Android fastboot someday?
  
   http://en.wikipedia.org/wiki/Fastboot
   http://android-dls.com/wiki/index.php?title=Fastboot
 
 [sp] The intent here is to boot faster - hence the name.
  Wasn't aware of any Android overlap.
 
  How about any of these:
  - CONFIG_SMALL_SIZE
  - CONFIG_FASTER_BOOT :)
   ^^
  Any other suggestions?

[sp] Didn't hear any other suggestions. But I had one more,
 CONFIG_QUICK_BOOT.

 Loic, does this seem okay?

~sanjeev

 
 ~sanjeev
 
  
  -- 
  Loïc Minier
  
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Re: [U-Boot] [PATCH 1/1] omap3evm: Support for fast boot

2010-10-26 Thread Loïc Minier 
On Tue, Oct 26, 2010, Premi, Sanjeev wrote:
 [sp] Didn't hear any other suggestions. But I had one more,
  CONFIG_QUICK_BOOT.

 I don't have a strong feeling either way; I just wanted fastboot to
 be used in a confusing way.  Your patch seems to be largely a tuned
 u-boot config stripping down u-boot to be smaller and faster; I'm not
 sure whether there's anything similar in u-boot.

-- 
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[U-Boot] [PATCH 1/1] omap3evm: Support for fast boot

2010-10-19 Thread Sanjeev Premi 
Default configuration enables multiple features
that are great for intial development work. But
many of them are not useful when time taken to
boot kernel is important - and uboot is frozen.

This patch attempts to reduce the size of u-boot
binary by excluding unused/not-so-commonly used
features/commands. It allows initialization of
unused devices to be skipped.

Less time to load the binary and selective
initialization results in considerable reduction
in the boot time.

Signed-off-by: Sanjeev Premi pr...@ti.com
---
 include/configs/omap3_evm.h |  138 +++
 1 files changed, 138 insertions(+), 0 deletions(-)

diff --git a/include/configs/omap3_evm.h b/include/configs/omap3_evm.h
index cd38698..9a07d93 100644
--- a/include/configs/omap3_evm.h
+++ b/include/configs/omap3_evm.h
@@ -373,4 +373,142 @@ extern unsigned int boot_flash_type;
 #define CONFIG_BOOTP_HOSTNAME  0x0004
 #define CONFIG_BOOTP_BOOTPATH  0x0010
 
+/*
+ * Support for fast boot
+ *
+ * In default build, the feature is disabled. To use the feature:
+ * 1) Define CONFIG_FAST_BOOT
+ * 2) Select the device used as boot medium, by defining one of:
+ *- CONFIG_FAST_BOOT_MMC
+ *- CONFIG_FAST_BOOT_NAND
+ */
+#undef CONFIG_FAST_BOOT
+#undef CONFIG_FAST_BOOT_MMC
+#undef CONFIG_FAST_BOOT_NAND
+
+#ifdef CONFIG_FAST_BOOT
+   /*
+* Generic config options
+*/
+   #ifndef CONFIG_SILENT_CONSOLE
+   #define CONFIG_SILENT_CONSOLE   1
+   #endif
+
+   #ifndef CONFIG_ENV_IS_NOWHERE
+   #define CONFIG_ENV_IS_NOWHERE   1
+   #endif
+
+   /*
+* Exclude unused/rarely used features.
+*/
+   #undef CONFIG_SYS_LONGHELP
+   #undef CONFIG_SYS_HUSH_PARSER
+
+   #undef CONFIG_REVISION_TAG
+
+   #undef CONFIG_MD5
+   #undef CONFIG_SHA1
+   #undef CONFIG_BZIP2
+   #undef CONFIG_LZMA
+
+   #undef CONFIG_CMD_BDI
+   #undef CONFIG_CMD_BOOTD
+   #undef CONFIG_CMD_CONSOLE
+   #undef CONFIG_CMD_ECHO
+   #undef CONFIG_CMD_EDITENV
+   #undef CONFIG_CMD_FPGA
+   #undef CONFIG_CMD_IMI
+   #undef CONFIG_CMD_ITEST
+   #undef CONFIG_CMD_LOADB
+   #undef CONFIG_CMD_LOADS
+   #undef CONFIG_CMD_NET
+   #undef CONFIG_CMD_NFS
+   #undef CONFIG_CMD_SETGETDCR
+   #undef CONFIG_CMD_SOURCE
+   #undef CONFIG_CMD_XIMG
+   #undef CONFIG_CMD_FPGA
+   #undef CONFIG_CMD_IMLS
+   #undef CONFIG_CMD_FLASH
+   #undef CONFIG_CMD_EXT2
+   #undef CONFIG_CMD_USB
+
+   #undef CONFIG_NET_MULTI
+
+   #undef CONFIG_SMC911X
+
+   #undef CONFIG_OF_LIBFDT
+   #undef CONFIG_FIT
+
+   #undef CONFIG_EXTRA_ENV_SETTINGS
+   #define CONFIG_EXTRA_ENV_SETTINGS \
+   verify=no\0 \
+   bootfile=uImage\0
+
+   #undef CONFIG_BOOTDELAY
+   #define CONFIG_BOOTDELAY0
+
+   /*
+* Select options based on choice of boot medium.
+*/
+   #ifdef CONFIG_FAST_BOOT_MMC
+   #undef CONFIG_NAND_OMAP_GPMC
+   #undef CONFIG_ENV_IS_IN_NAND
+   #undef CONFIG_CMD_NAND
+   #endif
+
+   #ifdef CONFIG_FAST_BOOT_MMC
+   #undef CONFIG_ENV_IS_IN_NAND
+   #undef CONFIG_CMD_NAND
+
+   #undef CONFIG_BOOTCOMMAND
+   #define CONFIG_BOOTCOMMAND  \
+   mmc init; \
+   fatload mmc 0 0x8000 uImage;  \
+   bootm 0x8000;
+
+   #undef CONFIG_BOOTARGS
+   #define CONFIG_BOOTARGS \
+   console=ttyS0,115200n8\
+   mem=128M quiet noinitrd   \
+   root=/dev/mmcblk0p2 rw\
+   rootfstype=ext3 rootwait 
+   #endif
+
+   #ifdef CONFIG_FAST_BOOT_NAND
+   # undef CONFIG_OMAP3_MMC
+   # undef CONFIG_CMD_MMC
+   # undef CONFIG_DOS_PARTITION
+   # undef CONFIG_CMD_FAT
+
+   #undef CONFIG_BOOTCOMMAND
+   #define CONFIG_BOOTCOMMAND  \
+   nand read.i 0x8000 28 50;  \
+   bootm 0x8000;
+
+   #undef CONFIG_BOOTARGS
+   #define CONFIG_BOOTARGS \
+   console=ttyS0,115200n8\
+   mem=128M quiet noinitrd   \
+   root=/dev/mtdblock4 rw\
+   rootfstype=jffs2 
+   #endif
+
+   /*
+* Board specific features
+* Exclude not-so-common features
+*/
+   #undef CONFIG_USB_OMAP3
+   #undef CONFIG_MUSB_HCD
+
+   #undef CONFIG_USB_STORAGE
+   #undef CONFIG_USB_KEYBOARD
+   #undef CONFIG_SYS_USB_EVENT_POLL
+   #undef CONFIG_PREBOOT
+
+   #undef CONFIG_MUSB_UDC
+   #undef

Re: [U-Boot] [PATCH 1/1] omap3evm: Support for fast boot

2010-10-19 Thread Premi, Sanjeev 
 -Original Message-
 From: Loïc Minier [mailto:l...@dooz.org] 
 Sent: Tuesday, October 19, 2010 10:14 PM
 To: Premi, Sanjeev
 Cc: u-boot@lists.denx.de
 Subject: Re: [U-Boot] [PATCH 1/1] omap3evm: Support for fast boot
 
 On Tue, Oct 19, 2010, Sanjeev Premi wrote:
  +#undef CONFIG_FAST_BOOT
 
  I wonder whether CONFIG_FAST_BOOT would cause confusion if 
 u-boot gains
  support for Android fastboot someday?
 
  http://en.wikipedia.org/wiki/Fastboot
  http://android-dls.com/wiki/index.php?title=Fastboot

[sp] The intent here is to boot faster - hence the name.
 Wasn't aware of any Android overlap.

 How about any of these:
 - CONFIG_SMALL_SIZE
 - CONFIG_FASTER_BOOT :)
  ^^
 Any other suggestions?

~sanjeev

 
 -- 
 Loïc Minier
 
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Re: [U-Boot] [PATCH 1/1] omap3evm: Support for fast boot

2010-10-19 Thread Loïc Minier 
On Tue, Oct 19, 2010, Sanjeev Premi wrote:
 +#undef CONFIG_FAST_BOOT

 I wonder whether CONFIG_FAST_BOOT would cause confusion if u-boot gains
 support for Android fastboot someday?

 http://en.wikipedia.org/wiki/Fastboot
 http://android-dls.com/wiki/index.php?title=Fastboot

-- 
Loïc Minier
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