228 lines
7.1 KiB
C
228 lines
7.1 KiB
C
/* U-Boot for BlackVME. (C) Wojtek Skulski 2010.
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* The board includes ADSP-BF561 rev. 0.5,
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* 32-bit SDRAM (2 * MT48LC16M16A2TG or MT48LC32M16A2TG),
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* Gigabit Ether AX88180 (ASIX) + 88E1111 rev. B2 (Marvell),
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* SPI boot flash on PF2 (M25P64 8MB, or M25P128 16 MB),
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* FPGA boot flash on PF3 (M25P64 8MB, or M25P128 16 MB),
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* Spartan6-LX150 (memory-mapped; both PPIs also connected).
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* See http://www.skutek.com
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*/
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#ifndef __CONFIG_BLACKVME_H__
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#define __CONFIG_BLACKVME_H__
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#include <asm/config-pre.h>
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/* Debugging: Set these options if you're having problems
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* #define CONFIG_DEBUG_EARLY_SERIAL
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* #define DEBUG
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* #define CONFIG_DEBUG_DUMP
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* #define CONFIG_DEBUG_DUMP_SYMS
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* CONFIG_PANIC_HANG means that the board will not auto-reboot
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*/
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#define CONFIG_PANIC_HANG 0
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/* CPU Options */
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#define CONFIG_BFIN_CPU bf561-0.5
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#define CONFIG_BFIN_BOOT_MODE BFIN_BOOT_SPI_MASTER
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/*
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* CLOCK SETTINGS CAVEAT
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* You CANNOT just change the clock settings, esp. the SCLK.
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* The SDRAM timing, SPI baud, and the serial UART baud
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* use SCLK frequency to set their own frequencies. Therefore,
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* if you change the SCLK_DIV, you may also have to adjust
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* SDRAM refresh and other timings.
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* --------------------------------------------------------------
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* CCLK = (CLKIN * VCO_MULT) / CCLK_DIV
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* 25 * 8 / 1 = 200 MHz
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* 25 * 16 / 1 = 400 MHz
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* 25 * 24 / 1 = 600 MHz
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* SCLK = (CLKIN * VCO_MULT) / SCLK_DIV
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* 25 * 8 / 2 = 100 MHz
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* 25 * 24 / 6 = 100 MHz
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* 25 * 24 / 5 = 120 MHz
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* 25 * 16 / 3 = 133 MHz
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* 25 MHz because the oscillator also feeds the ether chip.
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* CONFIG_CLKIN_HZ is 25 MHz written in Hz
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* CLKIN_HALF controls the DF bit in PLL_CTL
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* 0 = CLKIN 1 = CLKIN / 2
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* PLL_BYPASS controls the BYPASS bit in PLL_CTL
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* 0 = do not bypass 1 = bypass PLL
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* VCO_MULT = MSEL (multiplier) in PLL_CTL
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* Values can range from 0-63 (where 0 means 64)
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* CCLK_DIV = core clock divider (1, 2, 4, or 8 ONLY)
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* SCLK_DIV = system clock divider, 1 to 15
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*/
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#define CONFIG_CLKIN_HZ 25000000
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#define CONFIG_CLKIN_HALF 0
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#define CONFIG_PLL_BYPASS 0
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#define CONFIG_VCO_MULT 8
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#define CONFIG_CCLK_DIV 1
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#define CONFIG_SCLK_DIV 2
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/*
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* Ether chip in async memory space AMS3, same as BF561-EZ-KIT.
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* Used in 32-bit mode. 16-bit mode not supported.
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* http://docs.blackfin.uclinux.org/doku.php?id=hw:cards:ax88180
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*/
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/*
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* Network settings using a dedicated 2nd ether card in PC
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* Windows will automatically acquire IP of that card
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* Then use the dedicated card IP + 1 for the board
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* http://docs.blackfin.uclinux.org/doku.php?id=setting_up_the_network
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*/
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#define CONFIG_DRIVER_AX88180 1
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#define AX88180_BASE 0x2c000000
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#define CONFIG_HOSTNAME blackvme /* Bfin board */
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#define CONFIG_IPADDR 169.254.144.145 /* Bfin board */
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#define CONFIG_GATEWAYIP 169.254.144.144 /* dedic card */
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#define CONFIG_SERVERIP 169.254.144.144 /* tftp server */
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#define CONFIG_NETMASK 255.255.255.0
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#define CONFIG_ROOTPATH "/export/uClinux-dist/romfs" /*NFS*/
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#define CFG_AUTOLOAD "no"
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/*
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* SDRAM settings & memory map
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*/
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#define CONFIG_MEM_SIZE 64 /* 128, 64, 32, 16 */
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#define CONFIG_MEM_ADD_WDTH 9 /* 8, 9, 10, 11 */
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/*
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* SDRAM reference page
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* http://docs.blackfin.uclinux.org/doku.php?id=bfin:sdram
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* NOTE: BlackVME populates only SDRAM bank 0
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*/
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/* CONFIG_EBIU_SDBCTL_VAL bank ctrl may be needed in future */
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#define CONFIG_EBIU_SDGCTL_VAL 0x91114d /* global control */
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#define CONFIG_EBIU_SDRRC_VAL 0x306 /* refresh rate */
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/* Async memory global settings. (ASRAM, not SDRAM)
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* HRM page 16-10. Global ASRAM control = 0x3F. Six lower bits = 1
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* CLKOUT enabled, all async banks enabled, core has priority
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* bank 0&1 16 bit (FPGA)
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* bank 2&3 32 bit (ether and USB chips)
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*/
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#define CONFIG_EBIU_AMGCTL_VAL 0x3F /* ASRAM setup */
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/* Async mem timing: BF561 HRM page 16-12 and 16-15.
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* Default values 0xFFC2 FFC2 are the slowest supported.
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* Example settings of CONFIG_EBIU_AMBCTL1_VAL
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* 1. EZ-KIT settings: 0xFFC2 7BB0
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* 2. Bank 3 good timing for AX88180 @ 125MHz = 0x8850 xxxx
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* See the following page:
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* http://docs.blackfin.uclinux.org/doku.php?id=hw:cards:ax88180
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* 3. Bank 3 timing for AX88180 @ SCLK = 100 MHz:
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* AX88180 WEN = 5 clocks REN 6 clocks @ SCLK = 100 MHz
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* One extra clock needed because AX88180 is asynchronous to CPU.
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*/
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/* bank 1 0 */
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#define CONFIG_EBIU_AMBCTL0_VAL 0xFFC2FFC2
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/* bank 3 2 */
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#define CONFIG_EBIU_AMBCTL1_VAL 0xFFC2FFC2
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/* memory layout */
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#define CONFIG_SYS_MONITOR_LEN (256 << 10)
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#define CONFIG_SYS_MALLOC_LEN (384 << 10)
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/*
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* Serial SPI Flash
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* For the M25P64 SCK should be kept < 15 MHz
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*/
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#define CONFIG_BFIN_SPI
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#define CONFIG_ENV_IS_IN_SPI_FLASH
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#define CONFIG_ENV_OFFSET 0x40000
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#define CONFIG_ENV_SIZE 0x2000
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#define CONFIG_ENV_SECT_SIZE 0x40000
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#define CONFIG_ENV_SPI_MAX_HZ 15000000
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#define CONFIG_SF_DEFAULT_SPEED 15000000
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/*
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* Interactive command settings
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*/
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#define CONFIG_SYS_LONGHELP 1
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#define CONFIG_CMDLINE_EDITING 1
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#define CONFIG_AUTO_COMPLETE 1
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#define CONFIG_CMD_BOOTLDR
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#define CONFIG_CMD_CPLBINFO
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/*
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* Default: boot from SPI flash.
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* "sfboot" is a composite command defined in extra settings
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*/
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#define CONFIG_BOOTCOMMAND "run sfboot"
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/*
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* Console settings
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*/
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#define CONFIG_BAUDRATE 57600
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#define CONFIG_LOADS_ECHO 1
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#define CONFIG_UART_CONSOLE 0
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#define CONFIG_BFIN_SERIAL
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/*
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* U-Boot environment variables. Use "printenv" to examine.
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* http://docs.blackfin.uclinux.org/doku.php?id=bootloaders:u-boot:env
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*/
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#define CONFIG_BOOTARGS \
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"root=/dev/mtdblock0 rw " \
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"clkin_hz=" __stringify(CONFIG_CLKIN_HZ) " " \
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"earlyprintk=serial,uart0," \
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__stringify(CONFIG_BAUDRATE) " " \
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"console=ttyBF0," __stringify(CONFIG_BAUDRATE) " "
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/* Convenience env variables & commands.
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* Reserve kernstart = 0x20000 = 128 kB for U-Boot.
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* Reserve kernarea = 0x500000 = 5 MB for kernel (reasonable size).
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* U-Boot image is saved at flash offset=0.
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* Kernel image is saved at flash offset=$kernstart.
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* Instructions. Ksave takes about a minute to complete.
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* 1. Update U-Boot: run uget; run usave
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* 2. Update kernel: run kget; run ksave
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* After updating U-Boot also update the kernel per above instructions
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* to make the saved environment consistent with the flash.
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*/
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#define CONFIG_EXTRA_ENV_SETTINGS \
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"kernstart=0x20000\0" \
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"kernarea=0x500000\0" \
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"uget=tftp u-boot.ldr\0" \
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"kget=tftp uImage\0" \
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"usave=sf probe 2; " \
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"sf erase 0 $(kernstart); " \
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"sf write $(fileaddr) 0 $(filesize)\0" \
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"ksave=sf probe 2; " \
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"saveenv; " \
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"echo Now patiently wait for the prompt...; " \
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"sf erase $(kernstart) $(kernarea); " \
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"sf write $(fileaddr) $(kernstart) $(filesize)\0" \
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"sfboot=sf probe 2; " \
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"sf read $(loadaddr) $(kernstart) $(filesize); " \
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"run addip; bootm\0" \
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"addip=setenv bootargs $(bootargs) " \
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"ip=$(ipaddr):$(serverip):$(gatewayip):" \
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"$(netmask):$(hostname):eth0:off\0"
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/*
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* Soft I2C settings (BF561 does not have hard I2C)
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* PF12,13 on SPI connector 0.
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*/
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#ifdef CONFIG_SYS_I2C_SOFT
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# define CONFIG_SOFT_I2C_GPIO_SCL GPIO_PF12
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# define CONFIG_SOFT_I2C_GPIO_SDA GPIO_PF13
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# define CONFIG_SYS_I2C_SPEED 50000
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# define CONFIG_SYS_I2C_SLAVE 0xFE
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#endif
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/*
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* No Parallel Flash on this board
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*/
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#define CONFIG_SYS_NO_FLASH
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#undef CONFIG_CMD_JFFS2
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#endif
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