Changeset a640bc1 in mainline for kernel/arch/arm32/src/fpu_context.c

Timestamp:

2013-01-18T20:06:55Z (12 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

660e8fa

Parents:

cd8db93

Message:

arm, sec extensions: Add comments and remove use of sec extensions.

Revisit when we want to use this feature. U-boot locks the OS out of
the secure state at boot. This means we cannot change secure exception vector,
thus can only use SMC (secure monitor call) to request uboot/fw provided
functionality.

File:

• kernel/arch/arm32/src/fpu_context.c (modified) (2 diffs)

kernel/arch/arm32/src/fpu_context.c

@@ -114 +114 @@
 static void (*restore_context)(fpu_context_t *ctx);
 
-int sec_ext_handle_call(sec_ext_call_t call)
-{
-        printf("Handling secure call %x in %s context (%s mode-%x)\n",
-                call, sec_ext_is_secure() ? "secure" : "unsecure",
-                sec_ext_is_monitor_mode() ? "monitor" : "other",
-                current_status_reg_read());
-        if (sec_ext_is_monitor_mode() && call == SECURITY_CALL_ENABLE_CP10_11)
-                return 1;
-        return 0;
-}
-
 static int fpu_have_coprocessor_access()
 {
@@ -162 +151 @@
         return;
 #endif
-        if (sec_ext_is_implemented()) {
-                if (!sec_ext_is_monitor_mode()) {
-                // TODO enable this when we implement SMC handling
-                //      sec_ext_call(SECURITY_CALL_ENABLE_CP10_11);
-                } else {
-                        uint32_t nsacr = NSACR_read();
-                        nsacr |= (NSACR_CP_FLAG(10) | NSACR_CP_FLAG(11));
-                        NSACR_write(nsacr);
-                        smc_coherence(0);
-                }
-        }
 
         /* Allow coprocessor access */