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Re: redboot cyg_start routine
- From: Satish Kumar <satish at bvt dot sc dot sanyo dot co dot jp>
- To: "Michael Anburaj" <embeddedeng at hotmail dot com>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Mon, 14 Jul 2003 16:27:50 +0900
- Subject: Re: [ECOS] redboot cyg_start routine
- References: <Law15-F109OumdUxN3b0000be73@hotmail.com>
yes, i just got that ..!!
well, so far i have tested the redboot image on the ARM926ej-S armulator
using the ADS tool ,and my image finally remains in an indefinite loop
waiting for user redboot and GDB commands..
so can i assume that my redboot image is built correctly..and if yes,
then i tried again to boot up my targt system with this image..but still
no signs of any message displayed on the hyperterminal console window.
yes, the serial port settings are fine..!!
some one plz suggest some silution.
satish
On Mon, 14 Jul 2003 07:13:41 +0000
"Michael Anburaj" <embeddedeng@hotmail.com> wrote:
> Hi Satish,
>
> >
> >the problem is i see a indefinite loop in the assembly code i.e at
> >address 30004684 which branches to the address 30004648 always
> >unconditionally..can some one justify this..?
> >
> > and which is its equivalent source line..?
>
>
> The equivalent in main.c at cyg_start():
>
> while (true) {
> if (prompt) {
> diag_printf("RedBoot> ");
> prompt = false;
> }
> #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
> cmd_history = true; // Enable history collection
> #endif
> res = _rb_gets(line, sizeof(line), CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT);
> #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
> cmd_history = false; // Enable history collection
> #endif
> if (res == _GETS_TIMEOUT) {
> // No input arrived
> } else {
>
>
> This is the redboot even loop that's waiting for Reboot or GDB commands. The
> call to _rb_gets() read the console & feeds the command strings to this
> loop.
>
> -Mike.
>
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--
Satish Kumar <satish@bvt.sc.sanyo.co.jp>
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