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

[Stephen Warren]

From: Stephen Warren <swarren at 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 <swarren at 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