diff options
Diffstat (limited to 'arch/arm/mach-at91/sama5d2.c')
-rw-r--r-- | arch/arm/mach-at91/sama5d2.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/sama5d2.c b/arch/arm/mach-at91/sama5d2.c new file mode 100644 index 0000000000..2ce6d7f36f --- /dev/null +++ b/arch/arm/mach-at91/sama5d2.c @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <common.h> +#include <of.h> +#include <init.h> +#include <mach/aic.h> +#include <mach/sama5d2.h> +#include <asm/cache-l2x0.h> +#include <mach/sama5_bootsource.h> +#include <asm/mmu.h> + +#define SFR_CAN 0x48 +#define SFR_L2CC_HRAMC 0x58 + +static void sama5d2_can_ram_init(void) +{ + writel(0x00210021, SAMA5D2_BASE_SFR + SFR_CAN); +} + +static void sama5d2_l2x0_init(void) +{ + void __iomem *l2x0_base = SAMA5D2_BASE_L2CC; + u32 cfg; + + writel(0x1, SAMA5D2_BASE_SFR + SFR_L2CC_HRAMC); + + /* Prefetch Control */ + cfg = readl(l2x0_base + L2X0_PREFETCH_CTRL); + /* prefetch offset: TODO find proper values */ + cfg |= 0x1; + cfg |= L2X0_INCR_DOUBLE_LINEFILL_EN | L2X0_PREFETCH_DROP_EN + | L2X0_DOUBLE_LINEFILL_EN; + cfg |= L2X0_DATA_PREFETCH_EN | L2X0_INSTRUCTION_PREFETCH_EN; + writel(cfg, l2x0_base + L2X0_PREFETCH_CTRL); + + /* Power Control */ + cfg = readl(l2x0_base + L2X0_POWER_CTRL); + cfg |= L2X0_STNDBY_MODE_EN | L2X0_DYNAMIC_CLK_GATING_EN; + writel(cfg, l2x0_base + L2X0_POWER_CTRL); + + l2x0_init(l2x0_base, 0x0, ~0UL); +} + +static int sama5d2_init(void) +{ + if (!of_machine_is_compatible("atmel,sama5d2")) + return 0; + + at91_aic_redir(SAMA5D2_BASE_SFR, SAMA5D2_AICREDIR_KEY); + sama5d2_can_ram_init(); + sama5d2_l2x0_init(); + + return 0; +} +postmmu_initcall(sama5d2_init); + +static int sama5d2_bootsource_init(void) +{ + u32 r4; + + if (!of_machine_is_compatible("atmel,sama5d2")) + return 0; + + r4 = __sama5d2_stashed_bootrom_r4; + + bootsource_set(sama5_bootsource(r4)); + bootsource_set_instance(sama5_bootsource_instance(r4)); + + return 0; +} +postcore_initcall(sama5d2_bootsource_init); |