diff options
| author | Samuel Mescoff | 2016-02-16 09:45:06 +0100 |
|---|---|---|
| committer | Andreas Bießmann | 2016-02-18 21:34:41 +0100 |
| commit | f7cf291aa788eb5b64c0d16de529b1a378f509bb (patch) | |
| tree | 7fb741b4c492033d0b5fb364dc372dbb995898b9 /arch/arm | |
| parent | c21c28b6f39468dcc13f82458fa3c6f6c5dce9d9 (diff) | |
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 <samuel.mescoff@mobile-devices.fr>
Reviewed-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-at91/atmel_sfr.c | 7 | ||||
| -rw-r--r-- | arch/arm/mach-at91/include/mach/at91_common.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-at91/include/mach/sama5_sfr.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-at91/spl_atmel.c | 4 |
4 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/atmel_sfr.c b/arch/arm/mach-at91/atmel_sfr.c index 2bccb840c11..adf44c6a94c 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 efcd74ed90d..0742ffc56f8 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 7b19a20a4e0..b040256ba49 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 b2fb51d0ac2..688289e7cf7 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(); |