[U-Boot-Users] BCSR
I see following line in board/fads/fads.h file
#define BCSR_ADDR ((uint) 0xFF080000)
Can anybody tell me where this definition comes from. Cannot find any reference.
Abu Sana
In message 20040728000126.1016.qmail@web50508.mail.yahoo.com you wrote:
I see following line in board/fads/fads.h file
#define BCSR_ADDR ((uint) 0xFF080000)
Can anybody tell me where this definition comes from. Cannot find any reference.
For a desription of the register see the FADS User's manual; the address was chosen when setting up the memory map for the system.
Best regards,
Wolfgang Denk
Since posting this email, I had found BCSR definition in the manual.
It appear that this address is not correct. (I have 852T Fads board).
Original fads.h file had
#define BCSR_ADDR ((uint) 0xFF080000)
and I was getting sigabrt in serial.c (serial_init() call). Looking around I found another definition,
#define BCSR_ADDR ((uint) 0x02100000)
This seems to work for serial ports, but had no effect in fec.c file (fec_init() function call) and I thing this is the cause of my fec / LXT972 (which I have sent in different emails before).
Uptill this point,
IMMR 0xff000000 SDRAM from 0x00000000 for 32 mb Flash from 0x02000000 for 16 mb
Yesterday I change Flash to start from 0x40000000 and again I am getting sigabrt serial.c:serial_init() function. This time none of definitions are working (all get sigabrt)
#define BCSR_ADDR ((uint) 0x02100000) #define BCSR_ADDR ((uint) 0xff010000) #define BCSR_ADDR ((uint) 0xff080000)
Well, how can I correctly calculate BCSR_ADDR for my environment.
Thanks
Abu Sana
--- Wolfgang Denk wd@denx.de wrote:
In message 20040728000126.1016.qmail@web50508.mail.yahoo.com you wrote:
I see following line in board/fads/fads.h file
#define BCSR_ADDR ((uint) 0xFF080000)
Can anybody tell me where this definition comes from. Cannot find any reference.
For a desription of the register see the FADS User's manual; the address was chosen when setting up the memory map for the
system.
Best regards,
Wolfgang Denk
-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email:
wd@denx.de
While most peoples' opinions change, the conviction of their
correct-
ness never does.
Abu Sana writes:
Abu_Sana> Since posting this email, I had found BCSR definition in Abu_Sana> the manual. It appear that this address is not Abu_Sana> correct. (I have 852T Fads board).
It can't be correct or incorrect, it's just mapping that you choose. And FADS port never supported 852T FADS board. This board is similar to other FADS but may require some changes.
Abu_Sana> Original fads.h file had
Abu_Sana> #define BCSR_ADDR ((uint) 0xFF080000)
Abu_Sana> and I was getting sigabrt in serial.c (serial_init() Abu_Sana> call). Looking around I found another definition,
Abu_Sana> #define BCSR_ADDR ((uint) 0x02100000)
Found where? This value won't work in Linux. And BCSR has nothing to do with serial_init().
Abu_Sana> This seems to work for serial ports, but had no effect in Abu_Sana> fec.c file (fec_init() function call) and I thing this is Abu_Sana> the cause of my fec / LXT972 (which I have sent in Abu_Sana> different emails before).
Abu_Sana> Uptill this point,
Abu_Sana> IMMR 0xff000000 SDRAM from 0x00000000 for 32 mb Flash from Abu_Sana> 0x02000000 for 16 mb
Abu_Sana> Yesterday I change Flash to start from 0x40000000
This is not good for Linux either, IMHO.
Abu_Sana> and again I am getting sigabrt serial.c:serial_init() Abu_Sana> function. This time none of definitions are working (all Abu_Sana> get sigabrt)
Abu_Sana> #define BCSR_ADDR ((uint) 0x02100000) define BCSR_ADDR Abu_Sana> #((uint) 0xff010000) define BCSR_ADDR ((uint) 0xff080000)
Abu_Sana> Well, how can I correctly calculate BCSR_ADDR for my Abu_Sana> environment.
You can put it at any available address but what's wrong with the current definition? Why do you think that the problem is in BCSR? Files board/fads/fads.h and board/fads/fads.c contain a lot of hardware-specific definitions. Have you adjusted them according to your hardware? For example, there was no support for 32MB SDRAM. What's about board-specific configuration file in include/configs?
In message 20040728141843.871.qmail@web50503.mail.yahoo.com you wrote:
It appear that this address is not correct. (I have 852T Fads board).
It is absolutley correct. It is part of the design to set up a memory map.
Original fads.h file had #define BCSR_ADDR ((uint) 0xFF080000)
OK.
and I was getting sigabrt in serial.c (serial_init() call). Looking around I found another definition,
#define BCSR_ADDR ((uint) 0x02100000)
Yes, this is for another of theinfinite number of possible memory maps; in this case it's one which cannot work under Linux.
Yesterday I change Flash to start from 0x40000000 and again I am getting sigabrt serial.c:serial_init() function. This time none of definitions are working (all get sigabrt)
In my opinion you are changing too many things that are wokring fine anywhere else.
Best regards,
Wolfgang Denk
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