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Subject[PATCH v7 08/14] arm/tegra: generalize L2 cache initialization
Date
Generalize L2 cache initialization and discover L2 cache associativity at
runtime.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
---
arch/arm/mach-tegra/common.c | 15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index 8da1847..554f18f 100644
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -73,15 +73,20 @@ static __initdata struct tegra_clk_init_table tegra20_clk_init_table[] = {
};
#endif

-static void __init tegra_init_cache(void)
+static void __init tegra_init_cache(u32 tag_latency, u32 data_latency)
{
#ifdef CONFIG_CACHE_L2X0
void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000;
+ u32 aux_ctrl, cache_type;

- writel_relaxed(0x331, p + L2X0_TAG_LATENCY_CTRL);
- writel_relaxed(0x441, p + L2X0_DATA_LATENCY_CTRL);
+ writel_relaxed(tag_latency, p + L2X0_TAG_LATENCY_CTRL);
+ writel_relaxed(data_latency, p + L2X0_DATA_LATENCY_CTRL);

- l2x0_init(p, 0x6C080001, 0x8200c3fe);
+ cache_type = readl(p + L2X0_CACHE_TYPE);
+ aux_ctrl = (cache_type & 0x700) << (17-8);
+ aux_ctrl |= 0x6C000001;
+
+ l2x0_init(p, aux_ctrl, 0x8200c3fe);
#endif

}
@@ -92,6 +97,6 @@ void __init tegra20_init_early(void)
tegra_init_fuse();
tegra2_init_clocks();
tegra_clk_init_from_table(tegra20_clk_init_table);
- tegra_init_cache();
+ tegra_init_cache(0x331, 0x441);
}
#endif
--
1.7.7.rc0.72.g4b5ea.dirty


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