-
-
-
-jtag_khz 4
-
+# SPDX-License-Identifier: GPL-2.0-or-later
######################################
# Target: Atmel AT91SAM9260
######################################
-if { [info exists CHIPNAME] } {
- set _CHIPNAME $CHIPNAME
-} else {
- set _CHIPNAME at91sam9260
-}
-
-if { [info exists ENDIAN] } {
- set _ENDIAN $ENDIAN
-} else {
- set _ENDIAN little
-}
-
-if { [info exists CPUTAPID ] } {
- set _CPUTAPID $CPUTAPID
-} else {
- # force an error till we get a good number
- set _CPUTAPID 0x0792603f
-}
+source [find target/at91sam9261.cfg]
reset_config trst_and_srst
+adapter speed 4
-jtag_nsrst_delay 200
+adapter srst delay 200
jtag_ntrst_delay 200
-
-jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
-
-
-######################
-# Target configuration
-######################
-
-set _TARGETNAME $_CHIPNAME.cpu
-target create $_TARGETNAME arm926ejs -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm926ejs
-
-$_TARGETNAME invoke-event halted
-
-# Internal sram1 memory
-$_TARGETNAME configure -work-area-phys 0x00300000 -work-area-size 0x1000 -work-area-backup 1
-
scan_chain
-$_TARGETNAME configure -event reset-deassert-post {at91sam_init}
+$_TARGETNAME configure -event reset-start {
+ # at reset chip runs at 32khz
+ adapter speed 8
+}
+$_TARGETNAME configure -event reset-init {at91sam_init}
# Flash configuration
-#flash bank cfi <base> <size> <chip width> <bus width> <target#>
-flash bank cfi 0x10000000 0x01000000 2 2 $_TARGETNAME
+#flash bank <name> cfi <base> <size> <chip width> <bus width> <target>
+set _FLASHNAME $_CHIPNAME.flash
+flash bank $_FLASHNAME cfi 0x10000000 0x01000000 2 2 $_TARGETNAME
+# Faster memory downloads. This is disabled automatically during
+# reset init since all reset init sequences are too short for
+# fast memory access
+arm7_9 dcc_downloads enable
+arm7_9 fast_memory_access enable
proc at91sam_init { } {
-
- # at reset chip runs at 32khz
- jtag_khz 8
- halt
- mww 0xfffffd08 0xa5000501 # RSTC_MR : enable user reset
- mww 0xfffffd44 0x00008000 # WDT_MR : disable watchdog
-
- mww 0xfffffc20 0x00004001 # CKGR_MOR : enable the main oscillator
- sleep 20 # wait 20 ms
- mww 0xfffffc30 0x00000001 # PMC_MCKR : switch to main oscillator
- sleep 10 # wait 10 ms
- mww 0xfffffc28 0x2060bf09 # CKGR_PLLAR: Set PLLA Register for 198,656MHz
- sleep 20 # wait 20 ms
- mww 0xfffffc30 0x00000101 # PMC_MCKR : Select prescaler
- sleep 10 # wait 10 ms
- mww 0xfffffc30 0x00000102 # PMC_MCKR : Clock from PLLA is selected
- sleep 10 # wait 10 ms
+ mww 0xfffffd08 0xa5000501 ;# RSTC_MR : enable user reset
+ mww 0xfffffd44 0x00008000 ;# WDT_MR : disable watchdog
+
+ mww 0xfffffc20 0x00004001 ;# CKGR_MOR : enable the main oscillator
+ sleep 20 ;# wait 20 ms
+ mww 0xfffffc30 0x00000001 ;# PMC_MCKR : switch to main oscillator
+ sleep 10 ;# wait 10 ms
+ mww 0xfffffc28 0x2060bf09 ;# CKGR_PLLAR: Set PLLA Register for 198,656MHz
+ sleep 20 ;# wait 20 ms
+ mww 0xfffffc30 0x00000101 ;# PMC_MCKR : Select prescaler
+ sleep 10 ;# wait 10 ms
+ mww 0xfffffc30 0x00000102 ;# PMC_MCKR : Clock from PLLA is selected
+ sleep 10 ;# wait 10 ms
# Now run at anything fast... ie: 10mhz!
- jtag_khz 10000 # Increase JTAG Speed to 6 MHz
- arm7_9 dcc_downloads enable # Enable faster DCC downloads
-
- mww 0xffffec00 0x0a0a0a0a # SMC_SETUP0 : Setup SMC for Intel NOR Flash JS28F128P30T85 128MBit
- mww 0xffffec04 0x0b0b0b0b # SMC_PULSE0
- mww 0xffffec08 0x00160016 # SMC_CYCLE0
- mww 0xffffec0c 0x00161003 # SMC_MODE0
+ adapter speed 10000 ;# Increase JTAG Speed to 6 MHz
- flash probe 0 # Identify flash bank 0
+ mww 0xffffec00 0x0a0a0a0a ;# SMC_SETUP0 : Setup SMC for Intel NOR Flash JS28F128P30T85 128MBit
+ mww 0xffffec04 0x0b0b0b0b ;# SMC_PULSE0
+ mww 0xffffec08 0x00160016 ;# SMC_CYCLE0
+ mww 0xffffec0c 0x00161003 ;# SMC_MODE0
- mww 0xfffff870 0xffff0000 # PIO_ASR : Select peripheral function for D15..D31
- mww 0xfffff804 0xffff0000 # PIO_PDR : Disable PIO function for D15..D31
+ mww 0xfffff870 0xffff0000 ;# PIO_ASR : Select peripheral function for D15..D31
+ mww 0xfffff804 0xffff0000 ;# PIO_PDR : Disable PIO function for D15..D31
- mww 0xffffef1c 0x2 # EBI_CSA : Assign EBI Chip Select 1 to SDRAM
+ mww 0xffffef1c 0x2 ;# EBI_CSA : Assign EBI Chip Select 1 to SDRAM
- mww 0xffffea08 0x85227259 # SDRAMC_CR : Configure SDRAM (2 x Samsung K4S561632H-UC75 : 4M x 16Bit x 4 Banks)
- #mww 0xffffea08 0x85227254 # SDRAMC_CR : Configure SDRAM (2 x Samsung K4S641632H-UC75 : 1M x 16Bit x 4 Banks)
+ mww 0xffffea08 0x85227259 ;# SDRAMC_CR : Configure SDRAM (2 x Samsung K4S561632H-UC75 : 4M x 16Bit x 4 Banks)
+ #mww 0xffffea08 0x85227254 ;# SDRAMC_CR : Configure SDRAM (2 x Samsung K4S641632H-UC75 : 1M x 16Bit x 4 Banks)
- mww 0xffffea00 0x1 # SDRAMC_MR : issue a NOP command
+ mww 0xffffea00 0x1 ;# SDRAMC_MR : issue a NOP command
mww 0x20000000 0
- mww 0xffffea00 0x2 # SDRAMC_MR : issue an 'All Banks Precharge' command
+ mww 0xffffea00 0x2 ;# SDRAMC_MR : issue an 'All Banks Precharge' command
mww 0x20000000 0
- mww 0xffffea00 0x4 # SDRAMC_MR : issue 8 x 'Auto-Refresh' Command
+ mww 0xffffea00 0x4 ;# SDRAMC_MR : issue 8 x 'Auto-Refresh' Command
mww 0x20000000 0
mww 0xffffea00 0x4
mww 0x20000000 0
mww 0x20000000 0
mww 0xffffea00 0x4
mww 0x20000000 0
- mww 0xffffea00 0x3 # SDRAMC_MR : issue a 'Load Mode Register' command
+ mww 0xffffea00 0x3 ;# SDRAMC_MR : issue a 'Load Mode Register' command
mww 0x20000000 0
- mww 0xffffea00 0x0 # SDRAMC_MR : normal mode
+ mww 0xffffea00 0x0 ;# SDRAMC_MR : normal mode
mww 0x20000000 0
- mww 0xffffea04 0x5d2 # SDRAMC_TR : Set refresh timer count to 15us
+ mww 0xffffea04 0x5d2 ;# SDRAMC_TR : Set refresh timer count to 15us
}
-
-
-
projects / fw / openocd / blobdiff