I have a couple questions about tcl:
1. How do you make variables defined as global (see c100regs.tcl &
c100helper.tcl) visible in procedures? I would like to reuse defines in
c100regs.tcl. Otherwise, I need to define them every time I want to use
them. I tried 'global' but it does not work.
2. How to I transfer register (say cpsr or r0) to a tcl variable
(similar to memory -> tcl in mmw())?
3. I can't add comments wth # at the same line as the tcl command. This
is not a big deal but it would be nice to have.
Thanks,
Michal
# mrw,mmw from davinci.cfg
# mrw: "memory read word", returns value of $reg
proc mrw {reg} {
set value ""
ocd_mem2array value 32 $reg 1
return $value(0)
}
# mmw: "memory modify word", updates value of $reg
# $reg <== ((value & ~$clearbits) | $setbits)
proc mmw {reg setbits clearbits} {
set old [mrw $reg]
set new [expr ($old & ~$clearbits) | $setbits]
mww $reg $new
}
proc setupNOR {} {
puts "Setting up NOR: 16MB, CS0"
# this is taken from u-boot/boards/mindspeed/ooma-darwin/board.c:nor_hw_init()
# this really belongs to c100regs.tcl
# can't get the global var. working
set APB_BASEADDR 0x1000
set EBUS_BASEADDR [expr $APB_BASEADDR + 0x1A]
set EX_CSEN_REG [expr $EBUS_BASEADDR + 0x04]
set EX_CS0_SEG_REG [expr $EBUS_BASEADDR + 0x08]
set EX_CS0_CFG_REG [expr $EBUS_BASEADDR + 0x1C]
set EX_CS0_TMG1_REG [expr $EBUS_BASEADDR + 0x30]
set EX_CS0_TMG2_REG [expr $EBUS_BASEADDR + 0x44]
set EX_CS0_TMG3_REG [expr $EBUS_BASEADDR + 0x58]
set EX_CLOCK_DIV_REG [expr $EBUS_BASEADDR + 0x6C]
set EX_MFSM_REG [expr $EBUS_BASEADDR + 0x100]
set EX_MFSM_REG [expr $EBUS_BASEADDR + 0x100]
set EX_CSFSM_REG [expr $EBUS_BASEADDR + 0x104]
set EX_WRFSM_REG [expr $EBUS_BASEADDR + 0x108]
set EX_RDFSM_REG [expr $EBUS_BASEADDR + 0x10C]
# /* set GPIO5 as output */
# SoC_gpio_cfg(5, GPIO_TYPE_OUTPUT);
#
# /* Select lower 8MiB of flash device */
# SoC_gpio_set_0(SoC_gpio_mask(5));
# *(volatile u32 *)EX_CS0_SEG_REG = 0x7FF;
#/* adjust EXP bus configuration registers */
#*(volatile u32 *)EX_CLOCK_DIV_REG = 0x5;
#*(volatile u32 *)EX_CS0_TMG1_REG = 0x03034006;
#*(volatile u32 *)EX_CS0_TMG2_REG = 0x04040002;
# enable Expansion Bus Clock + CS0 (NOR)
mww $EX_CSEN_REG 0x3
# set the address space for CS0=16MB
mww $EX_CS0_SEG_REG 0x7ff
# set the CS0 bus width to 16-bit
mww $EX_CS0_CFG_REG 0x202
# set timings to NOR
mww $EX_CS0_TMG1_REG 0x03034006
mww $EX_CS0_TMG2_REG 0x04040002
#mww $EX_CS0_TMG3_REG
# set EBUS clock 165/5=33MHz
mww $EX_CLOCK_DIV_REG 0x5
# everthing else is OK with default
}
proc showNOR {} {
puts "This is the current NOR setup"
# this really belongs to c100regs.tcl
# can't get the global var. working
set APB_BASEADDR 0x1000
set EBUS_BASEADDR [expr $APB_BASEADDR + 0x1A]
set EX_CSEN_REG [expr $EBUS_BASEADDR + 0x04]
set EX_CS0_SEG_REG [expr $EBUS_BASEADDR + 0x08]
set EX_CS0_CFG_REG [expr $EBUS_BASEADDR + 0x1C]
set EX_CS0_TMG1_REG [expr $EBUS_BASEADDR + 0x30]
set EX_CS0_TMG2_REG [expr $EBUS_BASEADDR + 0x44]
set EX_CS0_TMG3_REG [expr $EBUS_BASEADDR + 0x58]
set EX_CLOCK_DIV_REG [expr $EBUS_BASEADDR + 0x6C]
set EX_MFSM_REG [expr $EBUS_BASEADDR + 0x100]
set EX_MFSM_REG [expr $EBUS_BASEADDR + 0x100]
set EX_CSFSM_REG [expr $EBUS_BASEADDR + 0x104]
set EX_WRFSM_REG [expr $EBUS_BASEADDR + 0x108]
set EX_RDFSM_REG [expr $EBUS_BASEADDR + 0x10C]
puts [format "EX_CSEN_REG (0x%x): 0x%x" $EX_CSEN_REG [mrw $EX_CSEN_REG]]
puts [format "EX_CS0_SEG_REG (0x%x): 0x%x" $EX_CS0_SEG_REG [mrw $EX_CS0_SEG_REG]]
puts [format "EX_CS0_CFG_REG (0x%x): 0x%x" $EX_CS0_CFG_REG [mrw $EX_CS0_CFG_REG]]
puts [format "EX_CS0_TMG1_REG (0x%x): 0x%x" $EX_CS0_TMG1_REG [mrw $EX_CS0_TMG1_REG]]
puts [format "EX_CS0_TMG2_REG (0x%x): 0x%x" $EX_CS0_TMG2_REG [mrw $EX_CS0_TMG2_REG]]
puts [format "EX_CS0_TMG3_REG (0x%x): 0x%x" $EX_CS0_TMG3_REG [mrw $EX_CS0_TMG3_REG]]
puts [format "EX_CLOCK_DIV_REG (0x%x): 0x%x" $EX_CLOCK_DIV_REG [mrw $EX_CLOCK_DIV_REG]]
puts [format "EX_MFSM_REG (0x%x): 0x%x" $EX_MFSM_REG [mrw $EX_MFSM_REG]]
puts [format "EX_CSFSM_REG (0x%x): 0x%x" $EX_CSFSM_REG [mrw $EX_CSFSM_REG]]
puts [format "EX_WRFSM_REG (0x%x): 0x%x" $EX_WRFSM_REG [mrw $EX_WRFSM_REG]]
puts [format "EX_RDFSM_REG (0x%x): 0x%x" $EX_RDFSM_REG [mrw $EX_RDFSM_REG]]
}
proc showGPIO {} {
puts "This is the current GPIO register setup"
# this really belongs to c100regs.tcl
# can't get the global var. working
set APB_BASEADDR 0x1000
set GPIO_BASEADDR [expr $APB_BASEADDR + 0x07]
# GPIO outputs register
set GPIO_OUTPUT_REG [expr $GPIO_BASEADDR + 0x00]
# GPIO Output Enable register
set GPIO_OE_REG [expr $GPIO_BASEADDR + 0x04]
set GPIO_HI_INT_ENABLE_REG [expr $GPIO_BASEADDR
