Jens Scharsig wrote: > * add's the new temporary CONFIG_AT91_LEGACY to all board configs > * This will need for backward compatiblity, while change the SoC > access to c structures. If CONFIG_AT91_LEGACY is defined, the > deprecated SoC is used. > * please see README.at91-soc for details > > Signed-off-by: Jens Scharsig <js_at...@scharsoft.de> > --- > doc/README.at91-soc | 42 > ++++++++++++++++++++++++++++++++++++ > include/configs/afeb9260.h | 2 + > include/configs/at91cap9adk.h | 2 + > include/configs/at91rm9200dk.h | 2 + > include/configs/at91rm9200ek.h | 2 + > include/configs/at91sam9260ek.h | 2 + > include/configs/at91sam9261ek.h | 2 + > include/configs/at91sam9263ek.h | 2 + > include/configs/at91sam9m10g45ek.h | 2 + > include/configs/at91sam9rlek.h | 2 + > include/configs/cmc_pu2.h | 2 + > include/configs/cpu9260.h | 2 + > include/configs/cpuat91.h | 2 + > include/configs/csb637.h | 2 + > include/configs/kb9202.h | 2 + > include/configs/m501sk.h | 2 + > include/configs/meesc.h | 2 + > include/configs/mp2usb.h | 2 + > include/configs/pm9261.h | 2 + > include/configs/pm9263.h | 2 + > include/configs/sbc35_a9g20.h | 2 + > include/configs/tny_a9260.h | 2 + > 22 files changed, 84 insertions(+), 0 deletions(-) > create mode 100644 doc/README.at91-soc > > diff --git a/doc/README.at91-soc b/doc/README.at91-soc > new file mode 100644 > index 0000000..063016e > --- /dev/null > +++ b/doc/README.at91-soc > @@ -0,0 +1,42 @@ > + New C structure AT91 SoC access > +================================= > + > +The gool > +--------
change to 'goal' > + > +Currently the at91 arch uses hundreds of address defines and special > +at91_xxxx_write/read functions to access the SOC. > +The u-boot project prefer the better to readable access via c stuctures, > +which describe the SoC peripherie. > + change to 'The u-boot project perferred method is to access memory mapped hw regisister via a c structure' > +e.g. old > + > + *AT91C_PIOA_IDR = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK; > + *AT91C_PIOC_PUDR = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK; > + *AT91C_PIOC_PER = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK; > + *AT91C_PIOC_OER = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK; > + *AT91C_PIOC_PIO = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK; > + > + at91_sys_write(AT91_RSTC_CR, > + AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST); > + > +e.g new > + pin = AT91_PMX_AA_TWD | AT91_PMX_AA_TWCK; > + writel(pin, &pio->pioa.idr); > + writel(pin, &pio->pioa.pudr); > + writel(pin, &pio->pioa.per); > + writel(pin, &pio->pioa.oer); > + writel(pin, &pio->pioa.sodr); > + > + writel(AT91_RSTC_KEY | AT91_RSTC_CR_PROCRST | > + AT91_RSTC_CR_PERRST, &rstc->cr); > + > +The Way Change to 'The method for updating' > +------- > + > +1. add's the new temporary CONFIG_AT91_LEGACY to all board configs > + that not converted to new SoC access Change to something like 'Display a compile time warning if the board has not been converted' > +2. add new structures for SoC access > +3. Convert arch, driver and boards file zu new SoC Change from 'zu new SoC' to 'to the new c stucture based SoC acesss' This readme is a big help Thanks Tom _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
