[U-Boot] [PATCH 2/2] ARM: tegra186: call secure monitor for all cache-wide ops

[Stephen Warren]

From: Stephen Warren <swar...@nvidia.com>

An SMC call is required for all cache-wide operations on Tegra186. This
patch implements the two missing hooks now that U-Boot supports them, and
fixes the mapping of "hook name" to SMC call code.

Signed-off-by: Stephen Warren <swar...@nvidia.com>
---
 arch/arm/mach-tegra/tegra186/cache.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-tegra/tegra186/cache.c 
b/arch/arm/mach-tegra/tegra186/cache.c
index fb0b1142e49b..3ab60b3b85b2 100644
--- a/arch/arm/mach-tegra/tegra186/cache.c
+++ b/arch/arm/mach-tegra/tegra186/cache.c
@@ -8,16 +8,33 @@
 #include <asm/system.h>
 
 #define SMC_SIP_INVOKE_MCE     0x82FFFF00
-#define MCE_SMC_ROC_FLUSH_CACHE        11
+#define MCE_SMC_ROC_FLUSH_CACHE                11
+#define MCE_SMC_ROC_FLUSH_CACHE_ONLY   14
+#define MCE_SMC_ROC_CLEAN_CACHE_ONLY   15
 
-int flush_dcache_all_l3(void)
+static int smc_sip_invoke_mce(int cmd)
 {
        struct pt_regs regs = {0};
 
        isb();
 
-       regs.regs[0] = SMC_SIP_INVOKE_MCE | MCE_SMC_ROC_FLUSH_CACHE;
+       regs.regs[0] = SMC_SIP_INVOKE_MCE | cmd;
        smc_call(&regs);
 
        return 0;
 }
+
+int invalidate_dcache_all_l3(void)
+{
+       return smc_sip_invoke_mce(MCE_SMC_ROC_FLUSH_CACHE_ONLY);
+}
+
+int flush_dcache_all_l3(void)
+{
+       return smc_sip_invoke_mce(MCE_SMC_ROC_CLEAN_CACHE_ONLY);
+}
+
+int invalidate_icache_all_l3(void)
+{
+       return smc_sip_invoke_mce(MCE_SMC_ROC_FLUSH_CACHE);
+}
-- 
2.10.1

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