mirror of
https://github.com/AsahiLinux/u-boot
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| bamboo.c | ||
| bamboo.h | ||
| config.mk | ||
| flash.c | ||
| init.S | ||
| Makefile | ||
| README | ||
| u-boot-nand.lds | ||
The 2 important dipswitches are configured as shown below: SW1 (for 33MHz SysClk) ---------------------- S1 S2 S3 S4 S5 S6 S7 S8 OFF OFF OFF OFF OFF OFF OFF ON SW7 (for Op-Code Flash and Boot Option H) ----------------------------------------- S1 S2 S3 S4 S5 S6 S7 S8 OFF OFF OFF ON OFF OFF OFF OFF The EEPROM at location 0x52 is loaded with these 16 bytes: C47042A6 05D7A190 40082350 0d050000 SDR0_SDSTP0[ENG]: 1 : PLL's VCO is the source for PLL forward divisors SDR0_SDSTP0[SRC]: 1 : Feedback originates from PLLOUTB SDR0_SDSTP0[SEL]: 0 : Feedback selection is PLL output SDR0_SDSTP0[TUNE]: 1000111000 : 10 <= M <= 22, 600MHz < VCO <= 900MHz SDR0_SDSTP0[FBDV]: 4 : PLL feedback divisor SDR0_SDSTP0[FBDVA]: 2 : PLL forward divisor A SDR0_SDSTP0[FBDVB]: 5 : PLL forward divisor B SDR0_SDSTP0[PRBDV0]: 1 : PLL primary divisor B SDR0_SDSTP0[OPBDV0]: 2 : OPB clock divisor SDR0_SDSTP0[LFBDV]: 1 : PLL local feedback divisor SDR0_SDSTP0[PERDV0]: 3 : Peripheral clock divisor 0 SDR0_SDSTP0[MALDV0]: 2 : MAL clock divisor 0 SDR0_SDSTP0[PCIDV0]: 2 : Sync PCI clock divisor 0 SDR0_SDSTP0[PLLTIMER]: 7 : PLL locking timer SDR0_SDSTP0[RW]: 1 : EBC ROM width: 16-bit SDR0_SDSTP0[RL]: 0 : EBC ROM location: EBC SDR0_SDSTP0[PAE]: 0 : PCI internal arbiter: disabled SDR0_SDSTP0[PHCE]: 0 : PCI host configuration: disabled SDR0_SDSTP0[ZM]: 3 : ZMII mode: RMII mode 100 SDR0_SDSTP0[CTE]: 0 : CPU trace: disabled SDR0_SDSTP0[Nto1]: 0 : CPU/PLB ratio N/P: not N to 1 SDR0_SDSTP0[PAME]: 1 : PCI asynchronous mode: enabled SDR0_SDSTP0[MEM]: 1 : Multiplex: EMAC SDR0_SDSTP0[NE]: 0 : NDFC: disabled SDR0_SDSTP0[NBW]: 0 : NDFC boot width: 8-bit SDR0_SDSTP0[NBW]: 0 : NDFC boot page selection SDR0_SDSTP0[NBAC]: 0 : NDFC boot address selection cycle: 3 Addr. Cycles, 1 Col. + 2 Row (512 page size) SDR0_SDSTP0[NARE]: 0 : NDFC auto read : disabled SDR0_SDSTP0[NRB]: 0 : NDFC Ready/Busy : Ready SDR0_SDSTP0[NDRSC]: 33333 : NDFC device reset counter SDR0_SDSTP0[NCG0]: 0 : NDFC/EBC chip select gating CS0 : EBC SDR0_SDSTP0[NCG1]: 0 : NDFC/EBC chip select gating CS1 : EBC SDR0_SDSTP0[NCG2]: 0 : NDFC/EBC chip select gating CS2 : EBC SDR0_SDSTP0[NCG3]: 0 : NDFC/EBC chip select gating CS3 : EBC SDR0_SDSTP0[NCRDC]: 3333 : NDFC device read count PPC440EP Clocking Configuration SysClk is 33.0MHz, M is 20, VCO is 660.0MHz, CPU is 330.0MHz, PLB is 132.0MHz OPB is 66.0MHz, EBC is 44.0MHz, MAL is 66.0MHz, Sync PCI is 66.0MHz The above information is reported by Eugene O'Brien <Eugene.O'Brien@advantechamt.com>. Thanks a lot. 2007-08-06, Stefan Roese <sr@denx.de> --------------------------------------------------------------------- The configuration for the AMCC 440EP eval board "Bamboo" was changed to only use 384 kbytes of FLASH for the U-Boot image. This way the redundant environment can be saved in the remaining 2 sectors of the same flash chip. Caution: With an upgrade from an earlier U-Boot version the current environment will be erased since the environment is now saved in different sectors. By using the following command the environment can be saved after upgrading the U-Boot image and *before* resetting the board: setenv recover_env 'prot off FFF80000 FFF9FFFF;era FFF80000 FFF9FFFF;' \ 'cp.b FFF60000 FFF80000 20000' 2006-07-27, Stefan Roese <sr@denx.de>