dot.gdbinit_300mhz_32mb

linux内核源码

# .gdbinit file
# $Id: dot.gdbinit_300MHz_32MB,v 1.2 2004/10/20 03:02:27 fujiwara Exp $
#-----
# NOTE: this file is generated by a script, "gen_gdbinit.pl".
# (Please type "gen_gdbinit.pl --help" and check the help message).
# $ Id: gen_gdbinit.pl,v 1.12 2004/07/26 09:56:10 takata Exp $
#-----
# target platform: m32700ut

# setting
set width 0d70
set radix 0d16

debug_chaos

# clk xin:cpu:bif:bus=25:300:75:75
define clock_init
  set *(unsigned long *)0x00ef4008 = 0x00000000
  set *(unsigned long *)0x00ef4004 = 0
  shell sleep 0.1
  # NOTE: Please change the master clock source from PLL-clock to Xin-clock
  # and switch off PLL, before resetting the clock gear ratio.

  set *(unsigned long *)0x00ef4024 = 2
  set *(unsigned long *)0x00ef4020 = 2
  set *(unsigned long *)0x00ef4010 = 0
  set *(unsigned long *)0x00ef4014 = 0
  set *(unsigned long *)0x00ef4004 = 5
  shell sleep 0.1
  set *(unsigned long *)0x00ef4008 = 0x00000200
end

# Initialize SDRAM controller
define sdram_init
  # SDIR0
  set *(unsigned long *)0x00ef6008 = 0x00000182
  # SDIR1
  set *(unsigned long *)0x00ef600c = 0x00000001
  # Initialize wait
  shell sleep 0.1
  # Ch0-MOD
  set *(unsigned long *)0x00ef602c = 0x00000020
  # Ch0-TR
  set *(unsigned long *)0x00ef6028 = 0x00051502
  # Ch0-ADR (size:32MB)
  set *(unsigned long *)0x00ef6020 = 0x08000003
  # AutoRef On
  set *(unsigned long *)0x00ef6004 = 0x00010e24
  # Access enable
  set *(unsigned long *)0x00ef6024 = 0x00000001
end
document sdram_init
  SDRAM controller initialization
  0x08000000 - 0x09ffffff (32MB)
end

# Initialize BSEL3 for UT-CFC
define cfc_init
  set $sfrbase = 0xa0ef0000
# too fast
#  set *(unsigned long *)($sfrbase + 0x5300) = 0x0b0b8000
#  set *(unsigned long *)($sfrbase + 0x5304) = 0x00102204
#  set *(unsigned long *)($sfrbase + 0x5300) = 0x1f1f8000
#  set *(unsigned long *)($sfrbase + 0x5300) = 0x1f1f1fdf
#  set *(unsigned long *)($sfrbase + 0x5304) = 0x0013220f
#  set *(unsigned long *)($sfrbase + 0x5304) = 0x0013330f
end
document cfc_init
  CF controller initialization
end

# MMU enable
define mmu_enable
  set $evb=0x88000000
  set *(unsigned long *)0xffff0024=1
end

# MMU disable
define mmu_disable
  set $evb=0
  set *(unsigned long *)0xffff0024=0
end

# Show TLB entries
define show_tlb_entries
  set $i = 0
  set $addr = $arg0
  set $nr_entries = $arg1
  use_mon_code
  while ($i < $nr_entries)
    set $tlb_tag = *(unsigned long*)$addr
    set $tlb_data = *(unsigned long*)($addr + 4)
    printf " [%2d] 0x%08lx : 0x%08lx - 0x%08lx\n", $i, $addr, $tlb_tag, $tlb_data
    set $i = $i + 1
    set $addr = $addr + 8
  end
  use_debug_dma
end
define itlb
  set $itlb=0xfe000000
  show_tlb_entries $itlb 0d32
end
define dtlb
  set $dtlb=0xfe000800
  show_tlb_entries $dtlb 0d32
end

# Initialize TLB entries
define init_tlb_entries
  set $i = 0
  set $addr = $arg0
  set $nr_entries = $arg1
  use_mon_code
  while ($i < $nr_entries)
    set *(unsigned long *)($addr + 0x4) = 0
    set $i = $i + 1
    set $addr = $addr + 8
  end
  use_debug_dma
end
define tlb_init
  set $itlb=0xfe000000
  init_tlb_entries $itlb 0d32
  set $dtlb=0xfe000800
  init_tlb_entries $dtlb 0d32
end

# Show current task structure
define show_current
  set $current = $spi & 0xffffe000
  printf "$current=0x%08lX\n",$current
  print *(struct task_struct *)$current
end

# Show user assigned task structure
define show_task
  set  = $arg0 & 0xffffe000
  printf "$task=0x%08lX\n",$task
  print *(struct task_struct *)$task
end
document show_task
  Show user assigned task structure
  arg0 : task structure address
end

# Show M32R registers
define show_regs
  printf " R0[0x%08lX]   R1[0x%08lX]   R2[0x%08lX]   R3[0x%08lX]\n",$r0,$r1,$r2,$r3
  printf " R4[0x%08lX]   R5[0x%08lX]   R6[0x%08lX]   R7[0x%08lX]\n",$r4,$r5,$r6,$r7
  printf " R8[0x%08lX]   R9[0x%08lX]  R10[0x%08lX]  R11[0x%08lX]\n",$r8,$r9,$r10,$r11
  printf "R12[0x%08lX]   FP[0x%08lX]   LR[0x%08lX]   SP[0x%08lX]\n",$r12,$fp,$lr,$sp
  printf "PSW[0x%08lX]  CBR[0x%08lX]  SPI[0x%08lX]  SPU[0x%08lX]\n",$psw,$cbr,$spi,$spu
  printf "BPC[0x%08lX]   PC[0x%08lX] ACCL[0x%08lX] ACCH[0x%08lX]\n",$bpc,$pc,$accl,$acch
  printf "EVB[0x%08lX]\n",$evb
end

# Setup all
define setup
  use_mon_code
  set *(unsigned int)0xfffffffc=0x60
  shell sleep 0.1
  clock_init
  shell sleep 0.1
  # SDRAM: 32MB
  set *(unsigned long *)0x00ef6020 = 0x08000003
  cfc_init
  # USB
  set *(unsigned short *)0xb0301000 = 0x100

  set $evb=0x08000000
end

# Load modules
define load_modules
  use_debug_dma
  load
end

# Set kernel parameters
define set_kernel_parameters
  set $param = (void*)0x08001000
  # INITRD_START
#  set *(unsigned long *)($param + 0x0010) = 0x08300000
  # INITRD_SIZE
#  set *(unsigned long *)($param + 0x0014) = 0x00000000
  # M32R_CPUCLK
  set *(unsigned long *)($param + 0x0018) = 0d300000000
  # M32R_BUSCLK
  set *(unsigned long *)($param + 0x001c) = 0d75000000

  # M32R_TIMER_DIVIDE
  set *(unsigned long *)($param + 0x0020) = 0d128

  set {char[0x200]}($param + 0x100) = "console=ttyS0,115200n8x console=tty1 root=/dev/nfsroot nfsroot=192.168.0.1:/project/m32r-linux/export/rootfs,rsize=1024,wsize=1024 nfsaddrs=192.168.0.101:192.168.0.1:192.168.0.1:255.255.255.0:mappi001 mem=32M \0"
end

# Boot
define boot
  set_kernel_parameters
  set $fp = 0
  set $pc = 0x08002000
# set *(unsigned char *)0xffffffff = 0x03
  si
  c
end

# Set breakpoints
define set_breakpoints
  b *0x08000030
end

# Restart
define restart
  sdireset
  sdireset
  set $pc = 0
  b *0x04001000
  b *0x08001000
  b *0x08002000
  si
  c
  tlb_init
  del
  setup
  load_modules
  boot
end

define si
  stepi
  x/i $pc
  show_reg
end

sdireset
sdireset
file vmlinux
target m32rsdi
set $pc = 0
b *0x04001000
b *0x08001000
b *0x08002000
c
tlb_init
del
setup
load_modules
boot