Building 2.6 cvs head on db1550

[Christian Hecimovic <checimovic@sutus.com>]

I'm having problems building 2.6 head from the linux-mips cvs. There were a 
number of build errors with the /arch/mips/config/db1550-defconfig file. 
Eventually, it built with a number of fixes. Here's the diff:

Index: arch/mips/Kconfig
===================================================================
RCS file: /home/cvs/linux/arch/mips/Kconfig,v
retrieving revision 1.96
diff -r1.96 Kconfig
583a584
> 	select DMA_NONCOHERENT
Index: arch/mips/Makefile
===================================================================
RCS file: /home/cvs/linux/arch/mips/Makefile,v
retrieving revision 1.176
diff -r1.176 Makefile
19c19
< 32bit-tool-prefix	= mipsel-linux-
---
> 32bit-tool-prefix	= mipsel-unknown-linux-gnu-
Index: arch/mips/mm/ioremap.c
===================================================================
RCS file: /home/cvs/linux/arch/mips/mm/ioremap.c,v
retrieving revision 1.19
diff -r1.19 ioremap.c
99a100,110
>  *  * Allow physical addresses to be fixed up to help 36 bit
>  *   * peripherals.
>  *    */
> static phys_t def_fixup_bigphys_addr(phys_t phys_addr, phys_t size)
> {
> 	        return phys_addr;
> }
> 
> phys_t (*fixup_bigphys_addr)(phys_t phys_addr, phys_t size) = 
def_fixup_bigphys_addr;
> 
> /*
121a133,134
> 	phys_addr = fixup_bigphys_addr(phys_addr, size);
> 
Index: drivers/mtd/maps/db1550-flash.c
===================================================================
RCS file: /home/cvs/linux/drivers/mtd/maps/db1550-flash.c,v
retrieving revision 1.1
diff -r1.1 db1550-flash.c
22c22
< #include <asm/au1000.h>
---
> #include <asm/mach-au1x00/au1000.h>
Index: drivers/pcmcia/Makefile
===================================================================
RCS file: /home/cvs/linux/drivers/pcmcia/Makefile,v
retrieving revision 1.34
diff -r1.34 Makefile
46a47
> au1x00_ss-$(CONFIG_MIPS_DB1550)			+= au1000_db1x00.o
Index: drivers/pcmcia/au1000_generic.c
===================================================================
RCS file: /home/cvs/linux/drivers/pcmcia/au1000_generic.c,v
retrieving revision 1.14
diff -r1.14 au1000_generic.c
80c80
< #elif defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || 
defined(CONFIG_MIPS_DB1500)
---
> #elif defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || 
defined(CONFIG_MIPS_DB1500) || defined(CONFIG_MIPS_DB1550)
152,153d151
< 	printk(KERN_DEBUG, "%s initializing socket %u\n", __FUNCTION__, skt->nr);
< 
315,316d312
< 		printk(KERN_ERR, "%smap (%d) out of range\n",
< 				__FUNCTION__, map->map);
339,340d334
< 		printk(KERN_ERR, "%s map (%d) out of range\n", 
< 				__FUNCTION__, map->map);
353c347
< 		map->sys_start = skt->phys_attr + map->card_start;
---
> 		map->static_start = skt->phys_attr + map->card_start;
356c350
< 		map->sys_start = skt->phys_mem + map->card_start;
---
> 		map->static_start = skt->phys_mem + map->card_start;
359,361c353,354
< 	map->sys_stop=map->sys_start+MAP_SIZE;
< 	debug(4, "set_mem_map %d start %Lx stop %Lx card_start %x\n", 
< 			map->map, map->sys_start, map->sys_stop, 
---
> 	debug(4, "set_mem_map %d start %Lx card_start %x\n", 
> 			map->map, map->sys_static, 
Index: drivers/pcmcia/au1000_generic.h
===================================================================
RCS file: /home/cvs/linux/drivers/pcmcia/au1000_generic.h,v
retrieving revision 1.1
diff -r1.1 au1000_generic.h
48c48
< #elif defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || 
defined(CONFIG_MIPS_DB1500)
---
> #elif defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || 
defined(CONFIG_MIPS_DB1500) || defined(CONFIG_MIPS_DB1550)
Index: include/asm-mips/bootinfo.h
===================================================================
RCS file: /home/cvs/linux/include/asm-mips/bootinfo.h,v
retrieving revision 1.75
diff -r1.75 bootinfo.h
177a178
> #define  MACH_DB1550		9       /* Au1550-based eval board */
Index: include/asm-mips/serial.h
===================================================================
RCS file: /home/cvs/linux/include/asm-mips/serial.h,v
retrieving revision 1.59
diff -r1.59 serial.h
215c215
<       .irq = AU1550_UART3_INT,  .flags = STD_COM_FLAGS \
---
>       .irq = AU1550_UART3_INT,  .flags = STD_COM_FLAGS, \



After building and loading the kernel, it panics:

YAMON> go . idebus=50 root=/dev/hdg1
Linux version 2.6.9-rc2 (ajain@debianFAI) (gcc version 3.3.2) #3 Thu Sep 30
16:4
CPU revision is: 03030200
AMD Alchemy Au1550/Db1550 Board
(PRId 03030200) @ 396MHZ
BCLK switching enabled!
Determined physical RAM map: memory: 0c000000 @ 00000000 (usable)
Built 1 zonelists
Kernel command line: idebus=50 root=/dev/hdg1 console=ttyS0,115200
ide_setup: idebus=50
Primary instruction cache 16kB, physically tagged, 4-way, linesize 32 bytes.
Primary data cache 16kB 4-way, linesize 32 bytes.
PID hash table entries: 1024 (order: 10, 16384 bytes)
calculating r4koff... 00060ae0(396000)
CPU frequency 396.00 MHz
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 189952k/196608k available (2771k kernel code, 6524k reserved, 668k
data)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
Checking for 'wait' instruction...  unavailable.
NET: Registered protocol family 16
Non-coherent PCI accesses enabled
Can't analyze prologue code at 803b373c
Linux Kernel Card Services
  options:  [pci]
Reserved instruction in kernel code in arch/mips/kernel/traps.c::do_ri, line 
61:
Cpu 0
$ 0   : 00000000 80490000 fffffffa c000305c
$ 4   : 8048bad0 0000000f 803ca06c 00000030
$ 8   : 00000000 812c9078 00000001 00000001
$12   : 00000003 ffffffff 0000000a 00000000
$16   : 8048baf0 8048bad0 804766d0 00000000
$20   : 00000000 00000000 00000000 00000000
$24   : 00000010 812bf2c9
$28   : 811fe000 811fff10 00000000 80289ba4
Hi    : 08366dd9
Lo    : 1db6cb20
epc   : 80289adc zlib_inflateInit2_+0x60/0xf0     Not tainted
ra    : 80289ba4 zlib_inflateInit_+0x18/0x24
Status: 1000fc03    KERNEL EXL IE
Cause : 00800028
PrId  : 03030200
Process swapper (pid: 1, threadinfo=811fe000, task=811fd8b8)
Stack : 8048baf0 00000000 804766d0 00000000 8048baf0 00000000 80289ba4
8016766c
        00000000 00000000 00000000 80221f50 80228a88 8046b7cc 8046ad54
8046ad2c
        00000000 00000000 804765d4 8046b9f0 00000000 00000000 00000000
00000000
        8045d7c8 8045d7c8 80470e30 80467a54 00000000 00000000 803b6c7c
00000000
        00000000 8045d8b8 00000000 00000000 00000000 00000000 801006dc
00000000
        ...
Call Trace:
 [<80289ba4>] zlib_inflateInit_+0x18/0x24
 [<8016766c>] vmalloc+0x14/0x20
 [<80221f50>] init_inodecache+0x30/0x50
 [<80228a88>] cramfs_uncompress_init+0x84/0x9c
 [<8046b7cc>] journal_init_caches+0x2c/0x44
 [<8046ad54>] eventpoll_init+0xac/0xdc
 [<8046ad2c>] eventpoll_init+0x84/0xdc
 [<8046b9f0>] init_cramfs_fs+0x10/0x28
 [<8045d7c8>] do_initcalls+0x50/0x108
 [<8045d7c8>] do_initcalls+0x50/0x108
 [<80470e30>] sock_init+0x54/0x6c
 [<80467a54>] sysctl_init+0x28/0x34
 [<8045d8b8>] do_basic_setup+0x38/0x44
 [<801006dc>] init+0x3c/0x118
 [<80107cd4>] kernel_thread_helper+0x10/0x18
 [<80107cc4>] kernel_thread_helper+0x0/0x18
Code: 2463005c  ac83001c  ac800018 <ac600014> 8c82001c  04a0001c  ac40000c
24a
Kernel panic - not syncing: Attempted to kill init!



After fooling with make menuconfig (turned off 64 bit support, PCMCIA, NFS, 
etc.) I got it to the point where it would load, but then couldn't mount root 
from hdg1. It cannot seem to find the hard drive at all.

2.4.25 correctly boots and mounts root from the ide drive.

Has anyone gotten the 2.6 kernel from cvs head to boot on a db1550, and 
successfully mount root from an ide hard drive? If so, how?

Thanks in advance,

Christian