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mimxrt1062: move device-specific files to "device/nxp" package

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This commit is contained in:
ardnew
2020-10-22 17:13:07 -05:00
committed by Ron Evans
parent 691185f5f4
commit f93b28057a
10 changed files with 1480 additions and 1424 deletions
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src/runtime/runtime_mimxrt1062.go
+27 -8
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@@ -5,6 +5,7 @@ package runtime
import (
"device/arm"
"device/nxp"
"math/bits"
"unsafe"
)
@@ -46,21 +47,37 @@ func main() {
abort()
}
func getRamSizeConfig(itcmKB, dtcmKB uint32) uint32 {
const minKB, disabled = uint32(4), uint32(0)
if itcmKB < minKB {
itcmKB = disabled
}
if dtcmKB < minKB {
dtcmKB = disabled
}
itcmKB = uint32(bits.Len(uint(itcmKB))) << nxp.IOMUXC_GPR_GPR14_CM7_CFGITCMSZ_Pos
dtcmKB = uint32(bits.Len(uint(dtcmKB))) << nxp.IOMUXC_GPR_GPR14_CM7_CFGDTCMSZ_Pos
return (itcmKB & nxp.IOMUXC_GPR_GPR14_CM7_CFGITCMSZ_Msk) |
(dtcmKB & nxp.IOMUXC_GPR_GPR14_CM7_CFGDTCMSZ_Msk)
}
func initSystem() {
// configure SRAM capacity
// configure SRAM capacity (512K for both ITCM and DTCM)
ramc := uintptr(unsafe.Pointer(&_flexram_cfg))
nxp.IOMUXC_GPR.GPR17.Set(uint32(ramc))
nxp.IOMUXC_GPR.GPR16.Set(0x00200007)
nxp.IOMUXC_GPR.GPR14.Set(0x00AA0000)
nxp.IOMUXC_GPR.GPR14.Set(getRamSizeConfig(512, 512))
// use bandgap-based bias currents for best performance (Page 1175) [Teensyduino]
nxp.PMU.MISC0_SET.Set(1 << 3)
// from Teensyduino
nxp.PMU.MISC0_SET.Set(nxp.PMU_MISC0_REFTOP_SELFBIASOFF)
// install vector table (TODO: initialize interrupt/exception table?)
vtor := uintptr(unsafe.Pointer(&_svectors))
nxp.SystemControl.VTOR.Set(uint32(vtor))
const wdogUpdateKey = 0xD928C520
// disable watchdog powerdown counter
nxp.WDOG1.WMCR.ClearBits(nxp.WDOG_WMCR_PDE_Msk)
nxp.WDOG2.WMCR.ClearBits(nxp.WDOG_WMCR_PDE_Msk)
@@ -73,10 +90,10 @@ func initSystem() {
nxp.WDOG2.WCR.ClearBits(nxp.WDOG_WCR_WDE_Msk)
}
if nxp.RTWDOG.CS.HasBits(nxp.RTWDOG_CS_CMD32EN_Msk) {
nxp.RTWDOG.CNT.Set(0xD928C520) // 0xD928C520 is the update key
nxp.RTWDOG.CNT.Set(wdogUpdateKey)
} else {
nxp.RTWDOG.CNT.Set(0xC520)
nxp.RTWDOG.CNT.Set(0xD928)
nxp.RTWDOG.CNT.Set((wdogUpdateKey >> 0) & 0xFFFF)
nxp.RTWDOG.CNT.Set((wdogUpdateKey >> 16) & 0xFFFF)
}
nxp.RTWDOG.TOVAL.Set(0xFFFF)
nxp.RTWDOG.CS.Set((nxp.RTWDOG.CS.Get() & ^uint32(nxp.RTWDOG_CS_EN_Msk)) | nxp.RTWDOG_CS_UPDATE_Msk)
@@ -85,7 +102,9 @@ func initSystem() {
func initPeripherals() {
// enable FPU - set CP10, CP11 full access
nxp.SystemControl.CPACR.SetBits((3 << (10 * 2)) | (3 << (11 * 2)))
nxp.SystemControl.CPACR.SetBits(
((nxp.SCB_CPACR_CP10_CP10_3 << nxp.SCB_CPACR_CP10_Pos) & nxp.SCB_CPACR_CP10_Msk) |
((nxp.SCB_CPACR_CP11_CP11_3 << nxp.SCB_CPACR_CP11_Pos) & nxp.SCB_CPACR_CP11_Msk))
enableTimerClocks() // activate GPT/PIT clock gates
initSysTick() // enable SysTick