[U-Boot] Fwd: [PATCH] OMAP4: speed up booting on Pandaboard
Forgot to copy list on my reply!
---------- Forwarded message ---------- From: Steve Sakoman sakoman@gmail.com Date: Thu, Nov 4, 2010 at 11:09 AM Subject: Re: [U-Boot] [PATCH] OMAP4: speed up booting on Pandaboard To: Sergiy Kibrik sergiy.kibrik@globallogic.com
On Thu, Nov 4, 2010 at 2:38 AM, Sergiy Kibrik sergiy.kibrik@globallogic.com wrote:
Improved default config for OMAP4 Pandaboard for faster boot: -reduced environment size to speed up memory initialization;
How much time does this save? I think shrinking to 2K might be a bit extreme, how about 4K?
-USB TTY driver turned off;
Not sure I agree with this. I think it might be useful to leave USB gadget support in, since there are those who might prefer a USB console over the serial port.
However if others disagree, I have this comment: If you are going to turn off the gadget, why not remove the USB driver too?
-tweaked blob load address to avoid image relocation (according to default uImage load address);
I don't think this does what you think it does! Unless I am horribly mistaken, the loadaddr address environment variable has nothing to do with relocation! It is the address typically used to store data when you do a fatload, tftp, bootp, etc.
Steve
Signed-off-by: Sergiy Kibrik sergiy.kibrik@globallogic.com
include/configs/omap4_panda.h | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/configs/omap4_panda.h b/include/configs/omap4_panda.h index 74defab..5aba424 100644 --- a/include/configs/omap4_panda.h +++ b/include/configs/omap4_panda.h @@ -62,10 +62,10 @@
/* * Size of malloc() pool
- Total Size Environment - 256k
- Total Size Environment - 2k
* Malloc - add 256k */ -#define CONFIG_ENV_SIZE (256 << 10) +#define CONFIG_ENV_SIZE (256 << 4) #define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + (256 << 10)) /* initial data */ /* Vector Base */ @@ -117,7 +117,7 @@
/* USB device configuration */ #define CONFIG_USB_DEVICE 1 -#define CONFIG_USB_TTY 1 +#undef CONFIG_USB_TTY #define CONFIG_SYS_CONSOLE_IS_IN_ENV 1
/* Flash */ @@ -146,7 +146,7 @@ #define CONFIG_ENV_OVERWRITE
#define CONFIG_EXTRA_ENV_SETTINGS \
- "loadaddr=0x82000000\0" \
- "loadaddr=0x80007FC0\0" \
"console=ttyS2,115200n8\0" \ "usbtty=cdc_acm\0" \ "vram=16M\0" \ -- 1.7.0.4
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Steve Sakoman