diff options
Diffstat (limited to 'tcl/target/stellaris.cfg')
| -rw-r--r-- | tcl/target/stellaris.cfg | 67 |
1 files changed, 64 insertions, 3 deletions
diff --git a/tcl/target/stellaris.cfg b/tcl/target/stellaris.cfg index b985de05..7fef4ec2 100644 --- a/tcl/target/stellaris.cfg +++ b/tcl/target/stellaris.cfg @@ -70,6 +70,65 @@ adapter_khz 500 source [find mem_helper.tcl] +proc reset_peripherals {family} { + + source [find chip/ti/lm3s/lm3s.tcl] + + echo "Resetting Core Peripherals" + + # Disable the PLL and the system clock divider (nop if disabled) + mmw $SYSCTL_RCC 0 $SYSCTL_RCC_USESYSDIV + mmw $SYSCTL_RCC2 $SYSCTL_RCC2_BYPASS2 0 + + # RCC and RCC2 to their reset values + mww $SYSCTL_RCC [expr (0x078e3ad0 | ([mrw $SYSCTL_RCC] & $SYSCTL_RCC_MOSCDIS))] + mww $SYSCTL_RCC2 0x07806810 + mww $SYSCTL_RCC 0x078e3ad1 + + # Reset the deep sleep clock configuration register + mww $SYSCTL_DSLPCLKCFG 0x07800000 + + # Reset the clock gating registers + mww $SYSCTL_RCGC0 0x00000040 + mww $SYSCTL_RCGC1 0 + mww $SYSCTL_RCGC2 0 + mww $SYSCTL_SCGC0 0x00000040 + mww $SYSCTL_SCGC1 0 + mww $SYSCTL_SCGC2 0 + mww $SYSCTL_DCGC0 0x00000040 + mww $SYSCTL_DCGC1 0 + mww $SYSCTL_DCGC2 0 + + # Reset the remaining SysCtl registers + mww $SYSCTL_PBORCTL 0 + mww $SYSCTL_IMC 0 + mww $SYSCTL_GPIOHBCTL 0 + mww $SYSCTL_MOSCCTL 0 + mww $SYSCTL_PIOSCCAL 0 + mww $SYSCTL_I2SMCLKCFG 0 + + # Reset the peripherals + mww $SYSCTL_SRCR0 0xffffffff + mww $SYSCTL_SRCR1 0xffffffff + mww $SYSCTL_SRCR2 0xffffffff + mww $SYSCTL_SRCR0 0 + mww $SYSCTL_SRCR1 0 + mww $SYSCTL_SRCR2 0 + + # Clear any pending SysCtl interrupts + mww $SYSCTL_MISC 0xffffffff + + # Wait for any pending flash operations to complete + while {[expr [mrw $FLASH_FMC] & 0xffff] != 0} { sleep 1 } + while {[expr [mrw $FLASH_FMC2] & 0xffff] != 0} { sleep 1 } + + # Reset the flash controller registers + mww $FLASH_FMA 0 + mww $FLASH_FCIM 0 + mww $FLASH_FCMISC 0xffffffff + mww $FLASH_FWBVAL 0 +} + $_TARGETNAME configure -event reset-start { adapter_khz 500 @@ -99,12 +158,14 @@ $_TARGETNAME configure -event reset-start { cortex_m3 reset_config sysresetreq } else { # Tempest and newer default to using NVIC VECTRESET - # this does mean a reset-init event handler is required to reset - # any peripherals + # peripherals will need reseting manually, see proc reset_peripherals cortex_m3 reset_config vectreset + + # reset peripherals, based on code in + # http://www.ti.com/lit/er/spmz573a/spmz573a.pdf + reset_peripherals $device_class } } # flash configuration ... autodetects sizes, autoprobed flash bank $_CHIPNAME.flash stellaris 0 0 0 0 $_TARGETNAME - |