> -----Original Message----- > From: Samuel Mescoff [mailto:[email protected]] > Sent: 2016年2月16日 16:45 > To: [email protected] > Cc: Samuel Mescoff <[email protected]>; > [email protected]; Yang, Wenyou <[email protected]>; > Ferre, Nicolas <[email protected]> > Subject: [U-Boot] [PATCH v2] ARM: at91: sama5d2: configure the L2 cache > memory > > The SAMA5D2 has a second internal SRAM that can be reassigned as a L2 cache > memory. > Make sure it is configured as a L2 cache memory when booting from a SPL image. > > Based on the commit b5ea95ef2b5b from the at91bootstrap repository. > > Signed-off-by: Samuel Mescoff <[email protected]>
It is OK for me. Reviewed-by: Wenyou Yang <[email protected]> > --- > > Changes for v2: > - removed useless #ifdef CONFIG_SAMA5D2 > > arch/arm/mach-at91/atmel_sfr.c | 7 +++++++ > arch/arm/mach-at91/include/mach/at91_common.h | 1 + > arch/arm/mach-at91/include/mach/sama5_sfr.h | 1 + > arch/arm/mach-at91/spl_atmel.c | 4 ++++ > 4 files changed, 13 insertions(+) > > diff --git a/arch/arm/mach-at91/atmel_sfr.c b/arch/arm/mach-at91/atmel_sfr.c > index 2bccb84..adf44c6 100644 > --- a/arch/arm/mach-at91/atmel_sfr.c > +++ b/arch/arm/mach-at91/atmel_sfr.c > @@ -19,3 +19,10 @@ void redirect_int_from_saic_to_aic(void) > writel((key32 | ATMEL_SFR_AICREDIR_NSAIC), &sfr->aicredir); > } > } > + > +void configure_2nd_sram_as_l2_cache(void) > +{ > + struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR; > + > + writel(1, &sfr->l2cc_hramc); > +} > diff --git a/arch/arm/mach-at91/include/mach/at91_common.h b/arch/arm/mach- > at91/include/mach/at91_common.h > index efcd74e..0742ffc 100644 > --- a/arch/arm/mach-at91/include/mach/at91_common.h > +++ b/arch/arm/mach-at91/include/mach/at91_common.h > @@ -34,5 +34,6 @@ void at91_spl_board_init(void); void > at91_disable_wdt(void); > void matrix_init(void); void redirect_int_from_saic_to_aic(void); > +void configure_2nd_sram_as_l2_cache(void); > > #endif /* AT91_COMMON_H */ > diff --git a/arch/arm/mach-at91/include/mach/sama5_sfr.h b/arch/arm/mach- > at91/include/mach/sama5_sfr.h > index 7b19a20..b040256 100644 > --- a/arch/arm/mach-at91/include/mach/sama5_sfr.h > +++ b/arch/arm/mach-at91/include/mach/sama5_sfr.h > @@ -25,6 +25,7 @@ struct atmel_sfr { > u32 sn0; /* 0x4c */ > u32 sn1; /* 0x50 */ > u32 aicredir; /* 0x54 */ > + u32 l2cc_hramc; /* 0x58 */ > }; > > /* Bit field in DDRCFG */ > diff --git a/arch/arm/mach-at91/spl_atmel.c b/arch/arm/mach-at91/spl_atmel.c > index b2fb51d..688289e 100644 > --- a/arch/arm/mach-at91/spl_atmel.c > +++ b/arch/arm/mach-at91/spl_atmel.c > @@ -79,6 +79,10 @@ void board_init_f(ulong dummy) { > switch_to_main_crystal_osc(); > > +#ifdef CONFIG_SAMA5D2 > + configure_2nd_sram_as_l2_cache(); > +#endif > + > /* disable watchdog */ > at91_disable_wdt(); > > -- > 2.5.0 Best Regards, Wenyou Yang _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
