Re: [ECOS] Re: Problem on allocate PCI memory space...

["Ling Su" <lingsu@palmmicro.com>]

[-- Attachment #1: Type: text/plain, Size: 1854 bytes --]

Ling Su wrote,
> > Could you please do me a favor? As you may know, I still have trouble to
use
> > my tool chain with "-O2" option. I believe Nick's point is correct,
since
> > the RAM startup code doesn't initlize the MMU. I have tried to include
the
> > hal_mmu_init in the RAM startup code, the progrem just hang somewhere,
it is
> > not so good to initialize the TLB twice, I guess. I think to rebuild the
> > gdbstub will be a better solution, I hope I can have a optimized stub
code,
> > could you help me build me and send me a gzipped code privately? Thanks
a
> > lot!
>

Jifl Wrote,
> First it would surely be better to rebuild the stubs without -O0 just to
> see if it works. Is there any requirement for the stubs to be optimized?
Do
> they not fit otherwise?
>
> Once we _know_ you have code that works, then you can send the patches,
and
> I'll gladly build you a new stub image in return :-).
>

Hi, Dear Jifl,

I attached the small patch for the PCI bus access. I tested using the old
stub rom provided in eCos-1.3.1 release, now I can access my PCI card
without any problem. Basically I just add the hal_mmu_init even for RAM
startup program.

I still have trouble to build a stub rom, I guess it is due to my toolchain
problem. If I build one using "-O2" option, it simply doesn't not response,
but I am sure it is alive since I can observe its PCI access to serial port.
But it can not connect to GDB. If I build with "-O0" option, it can
connected, but the strange thing is it display a different thing when I type
"target remote /dev/ttyS0" from the original stub ROM. Even worse, I simply
complain can not find 0x8000xxxx to start the program. If you have interests
to see the problem, I can send you a detail log.

If you have some time, can you build a stub rom for me after applying the
patch, thanks a lot.

Best Regards,
-Ling

[-- Attachment #2: patch_pci --]
[-- Type: text/x-diff, Size: 3333 bytes --]

Index: hal/mips/arch/current/src/vectors.S
===================================================================
RCS file: /cvs/ecos/ecos/packages/hal/mips/arch/current/src/vectors.S,v
retrieving revision 1.20
diff -u -r1.20 vectors.S
--- vectors.S	2000/08/25 17:33:03	1.20
+++ vectors.S	2000/09/15 00:38:27
@@ -51,7 +51,8 @@
 # include <pkgconf/kernel.h>	
 #endif
 			
-#include <cyg/hal/arch.inc>	
+#include <cyg/hal/arch.inc>
+#include <cyg/hal/platform.inc>
 #include <cyg/hal/hal_arch.h>	
 	
 #ifdef at
Index: hal/mips/vrc4373/current/include/platform.inc
===================================================================
RCS file: /cvs/ecos/ecos/packages/hal/mips/vrc4373/current/include/platform.inc,v
retrieving revision 1.1
diff -u -r1.1 platform.inc
--- platform.inc	2000/03/28 14:11:31	1.1
+++ platform.inc	2000/09/15 00:38:29
@@ -155,7 +155,7 @@
 # Since the setup code must work only in registers, we do not do a subroutine
 # linkage here, instead the setup code knows to jump back here when finished.
 	
-#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM)
+#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM) || defined(CYG_HAL_STARTUP_RAM) 
 
 	.macro	hal_mmu_init
 	.extern	hal_mmu_setup
@@ -174,7 +174,7 @@
 # MEMC macros.
 # 
 	
-#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM)
+#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM) 
 
 	.macro	hal_memc_init
 	.extern	hal_memc_setup
Index: hal/mips/vrc4373/current/include/plf_io.h
===================================================================
RCS file: /cvs/ecos/ecos/packages/hal/mips/vrc4373/current/include/plf_io.h,v
retrieving revision 1.1
diff -u -r1.1 plf_io.h
--- plf_io.h	2000/03/28 14:11:32	1.1
+++ plf_io.h	2000/09/15 00:38:29
@@ -67,7 +67,7 @@
 
 // This is where the PCI spaces are mapped in the CPU's (virtual)
 // address space.
-#define HAL_PCI_PHYSICAL_MEMORY_BASE    0xC0000000
+#define HAL_PCI_PHYSICAL_MEMORY_BASE    0x40000000
 #define HAL_PCI_PHYSICAL_IO_BASE        0xAC000000
 
 //-----------------------------------------------------------------------------
@@ -176,7 +176,7 @@
 // Resources
 
 // Map PCI device resources starting from these addresses in PCI space.
-#define HAL_PCI_ALLOC_BASE_MEMORY       0
+#define HAL_PCI_ALLOC_BASE_MEMORY       0x90000000
 #define HAL_PCI_ALLOC_BASE_IO           0
 
 // Translate the PCI interrupt requested by the device (INTA#, INTB#,
Index: hal/mips/vrc4373/current/src/platform.S
===================================================================
RCS file: /cvs/ecos/ecos/packages/hal/mips/vrc4373/current/src/platform.S,v
retrieving revision 1.2
diff -u -r1.2 platform.S
--- platform.S	2000/09/01 13:45:26	1.2
+++ platform.S	2000/09/15 00:38:31
@@ -275,7 +275,7 @@
 ## Much of this code is taken from the PMON sources, hence it does not fully
 ## conform to our normal coding conventions.
 
-#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM)
+#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM) || defined(CYG_HAL_STARTUP_RAM)
 
 ## DEFINITIONS FOR THE TLB SUPPORT
 
@@ -301,7 +301,7 @@
 #define TLBLO_UNCACHED  (CFG_C_UNCACHED<<TLBLO_CSHIFT)
 #define PAGE_SIZE       0x01000000
 #define PADDR_INC       0x02000000
-#define NUMB_PG         8
+#define NUMB_PG         16
 
 	.text