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| author | Dean Glazeski <dnglaze@gmail.com> | 2009-10-18 22:26:38 +0200 |
|---|---|---|
| committer | Øyvind Harboe <oyvind.harboe@zylin.com> | 2009-10-18 22:26:38 +0200 |
| commit | 76b4ee8935c86466895b0cbf070389337581d593 (patch) | |
| tree | 69a2b44d262164c58b712e14477db708120d530d /tcl | |
| parent | 990f50a73bca9f9fe4f261161b25fb8fb4432e52 (diff) | |
| download | riscv-openocd-76b4ee8935c86466895b0cbf070389337581d593.zip riscv-openocd-76b4ee8935c86466895b0cbf070389337581d593.tar.gz riscv-openocd-76b4ee8935c86466895b0cbf070389337581d593.tar.bz2 | |
SDRAM and clock configuration for the SAM9-L9260 board from Olimex
Diffstat (limited to 'tcl')
| -rw-r--r-- | tcl/board/olimex_sam9_l9260.cfg | 91 |
1 files changed, 85 insertions, 6 deletions
diff --git a/tcl/board/olimex_sam9_l9260.cfg b/tcl/board/olimex_sam9_l9260.cfg index fbd8f5c..b5cd10e 100644 --- a/tcl/board/olimex_sam9_l9260.cfg +++ b/tcl/board/olimex_sam9_l9260.cfg @@ -1,10 +1,89 @@ -## -# Olimex SAM9-L9260 board configuration file +################################################################################ +# Olimex SAM9-L9260 Development Board # -# Date Author Change -# ---- ----- ----- -# 17/Jan/2009 Dean Glazeski Initial Creation +# http://www.olimex.com/dev/sam9-L9260.html # -## +# Atmel AT91SAM9260 : PLLA = 198.656 MHz, MCK = 99.328 MHz +# PMC configured for external 18.432 MHz crystal +# +# 32-bit SDRAM : 2 x Samsung K4S561632J-UC75, 4M x 16Bit x 4 Banks +# 8-bit NAND Flash : 1 x Samsung K9F4G08U0M, 512M x 8Bit +# Dataflash : 1 x Atmel AT45DB161D, 16Mbit +# +################################################################################ source [find target/at91sam9260.cfg] + +# NTRST_E jumper is enabled by default, so we don't need to override the reset +# config. +#reset_config srst_only + +$_TARGETNAME configure -event reset-start { + # At reset, CPU runs at 32.768 kHz. JTAG frequency must be 6 times slower if + # RCLK is not supported. + jtag_rclk 5 + halt + + # RSTC_MR : enable user reset, reset length is 64 slow clock cycles. MMU may + # be enabled... use physical address. + arm926ejs mww_phys 0xfffffd08 0xa5000501 +} + +$_TARGETNAME configure -event reset-init { + mww 0xfffffd44 0x00008000 # WDT_MR : disable watchdog + + ## + # Clock configuration for 99.328 MHz main clock. + ## + mww 0xfffffc20 0x00004001 # CKGR_MOR : enable main oscillator, 512 slow clock startup + sleep 20 # wait 20 ms (need 15.6 ms for startup) + mww 0xfffffc30 0x00000001 # PMC_MCKR : switch to main oscillator (18.432 MHz) + sleep 10 # wait 10 ms + mww 0xfffffc28 0x2060bf09 # CKGR_PLLAR : 18.432 MHz / 9 * 97 = 198.656 MHz, 63 slow clock startup + sleep 20 # wait 20 ms (need 1.9 ms for startup) + mww 0xfffffc30 0x00000101 # PMC_MCKR : no scale on proc clock, master is proc / 2 + sleep 10 # wait 10 ms + mww 0xfffffc30 0x00000102 # PMC_MCKR : switch to PLLA (99.328 MHz) + + # Increase JTAG speed to 6 MHz if RCLK is not supported. + jtag_rclk 6000 + + arm7_9 dcc_downloads enable # Enable faster DCC downloads. + + ## + # SDRAM configuration for 2 x Samsung K4S561632J-UC75, 4M x 16Bit x 4 Banks. + ## + mww 0xfffff870 0xffff0000 # PIOC_ASR : select peripheral function for D15..D31 + mww 0xfffff804 0xffff0000 # PIOC_PDR : disable PIO function for D15..D31 + + mww 0xffffef1c 0x00010002 # EBI_CSA : assign EBI CS1 to SDRAM, VDDIOMSEL set for +3V3 memory + + mww 0xffffea08 0x85237259 # SDRAMC_CR : configure SDRAM for Samsung chips + + mww 0xffffea00 0x1 # SDRAMC_MR : issue NOP command + mww 0x20000000 0 + 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 0x20000000 0 + mww 0xffffea00 0x4 + mww 0x20000000 0 + mww 0xffffea00 0x4 + mww 0x20000000 0 + mww 0xffffea00 0x4 + mww 0x20000000 0 + mww 0xffffea00 0x4 + mww 0x20000000 0 + mww 0xffffea00 0x4 + mww 0x20000000 0 + mww 0xffffea00 0x4 + mww 0x20000000 0 + mww 0xffffea00 0x4 + mww 0x20000000 0 + mww 0xffffea00 0x3 # SDRAMC_MR : issue a 'Load Mode Register' command + mww 0x20000000 0 + mww 0xffffea00 0x0 # SDRAMC_MR : normal mode + mww 0x20000000 0 + + mww 0xffffea04 0x2b6 # SDRAMC_TR : set refresh timer count to 7 us +} |