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Dear Linux-Mips
Developers: I’d like
to ask a question about use of the ‘mem=’ kernel parameter.
When booting without this parameter, the kernel automatically detects the
amount of memory as 989020 kB. If a kernel
parameter is added to specify ‘mem=989020k’ a TLB Miss error is
encountered. Do you all have guidance about how the memory parameter can
be specified without causing the error? Since the mem= parameter was set
to an identical value as the memory reported by meminfo in the /proc
filesystem, use of this kernel parameter should be OK. This behavior has
been observed on both the BCM1250/1480 platforms when running Debian linux.
The 2.6.17-2 kernel is used with the system. Thanks, Gary -- Gary A. Smith,
ABD PhD 3331 Heritage
Trade Drive Suite 101 Wake Forest,
NC 27587 919.562.5333
x107 Gary.Smith@xxxxxxxxxxxx debian:/proc# more meminfo MemTotal: 989020
kB MemFree:
957876 kB Buffers:
1660 kB Cached:
12076 kB SwapCached:
0 kB Active:
10308 kB Inactive:
5224 kB HighTotal:
0 kB HighFree:
0 kB LowTotal: 989020
kB LowFree:
957876 kB SwapTotal: 72252
kB SwapFree:
72252 kB Dirty:
524 kB Writeback:
0 kB Mapped:
4496 kB Slab:
7236 kB CommitLimit: 566760 kB Committed_AS: 4360 kB PageTables:
188 kB VmallocTotal: 1073741824 kB VmallocUsed: 916
kB VmallocChunk: 1073739640 kB CFE version 1.3.3 for SWARM (64bit,MP,BE,MIPS) Build
Date: Tue Dec 19 06:41:38 EST 2006 (root@static-host) Copyright (C)
2000,2001,2002,2003,2004,2005 Broadcom Corporation. Initializing Arena. Initializing Devices. SWARM board revision 3 sbeth: found phy 1, vendor 000818 part 0C sbeth: found phy 1, vendor 000818 part 0C Config
switch: 0 CPU: BCM1250 B2 L2 Cache Status: OK Wafer ID: 0x7F21A009 [Lot 8136,
Wafer 13] Manuf Test: Bin A [2CPU_FI_FD_F2 (OK)] SysCfg: 0000000008C20800 [PLL_DIV: 16, IOB0_DIV:
CPUCLK/4, IOB1_DIV: CPUCLK/3] CPU type 0x1040102: 800MHz Total memory: 0x40000000 bytes (1024MB) Total memory used by CFE: 0x8FEB3000 -
0x8FFFF520 (1361184) Initialized
Data: 0x8FEF5408 -
0x8FEFD100 (31992) BSS
Area:
0x8FEFD100 - 0x8FEFD520 (1056) Local
Heap:
0x8FEFD520 - 0x8FFFD520 (1048576) Stack
Area:
0x8FFFD520 - 0x8FFFF520 (8192) Text (code)
segment: 0x8FEB3000 - 0x8FEF4C75 (269429) Boot area (physical):
0x0FE72000 - 0x0FEB2000 Relocation
Factor: I:F02B3000 - D:F02B3000 *** Autoboot: Trying device 'ide0.0' file
(ide0.0,raw) Loader:raw Filesys:raw Dev:ide0.0 File:
Options:(null) Loading: ........... 130560 bytes read Entry at 0x20000000 Starting program at 0x20000000 SiByte Loader, version 2.4.2 Built on Oct 4 2005 Getting configuration file
ext2:ide0.0:*:sibyl.conf... Config file retrieved. Loading kernel (ELF64): 4256456@0x80100000 done Set up command line arguments to: root=/dev/hda3
console=duart0 mem=989020k Setting up initial prom_init arguments **Exception
32: EPC=0000000020000BC8, Cause=00009008 (TLBMissRd) (CPU0)
RA=0000000020000BB4, VAddr=0000000000000000, SR=00000082 0
($00) = 0000000000000000 AT ($01) = 0000000000000001 v0 ($02)
= FFFFFFFF8FEFCC70 v1 ($03) = 0000000000000000 a0 ($04)
= 0000000000000010 a1 ($05) = 0000000000000000 a2 ($06)
= 000000008FEB3CDC a3 ($07) = 0000000000000000 t0 ($08)
= 0000000000000080 t1 ($09) = 0000000000000001 t2 ($10)
= 0000000000000001 t3 ($11) = 0000000000000000 t4 ($12)
= 0000000000000000 t5 ($13) = 0000000000000000 t6 ($14)
= 0000000000000015 t7 ($15) = 0000000045000000 s0 ($16)
= FFFFFFFF8FEB3AF4 s1 ($17) = FFFFFFFF8FEFD4E0 s2 ($18)
= FFFFFFFF8FFFF250 s3 ($19) = FFFFFFFF8FEFD0B8 s4 ($20)
= 0000000000000000 s5 ($21) = 0000000000000000 s6 ($22)
= 0000000000000000 s7 ($23) = FFFFFFFF8FEB3000 t8 ($24)
= 0000000000000000 t9 ($25) = 0000000000000000 k0 ($26)
= 0000000000000001 k1 ($27) = 000000008FEB3CDC gp ($28)
= 00000000200278F0 sp ($29) = FFFFFFFF8FFFECE0 fp ($30)
= FFFFFFFF8FFFECE0 ra ($31) = 0000000020000BB4 |
