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HV: trusty: refine version checking when initializing trusty

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Replace if--else logic with switch--case when checking interface
version.

Tracked-On: #1265
Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Acked-by: Zhu Bing <bing.zhu@intel.com>
This commit is contained in:
Qi Yadong 2018-09-17 15:32:08 +08:00 committed by lijinxia
parent 9d602208e5
commit 8f0cb5630d
1 changed files with 15 additions and 13 deletions
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28
hypervisor/arch/x86/trusty.c
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@ -417,28 +417,30 @@ bool initialize_trusty(struct vcpu *vcpu, uint64_t param)
return false;
}
if (boot_param.version > TRUSTY_VERSION_2) {
dev_dbg(ACRN_DBG_TRUSTY, "%s: Version(%u) not supported!\n",
__func__, boot_param.version);
return false;
}
trusty_entry_gpa = (uint64_t)boot_param.entry_point;
trusty_base_gpa = (uint64_t)boot_param.base_addr;
trusty_mem_size = boot_param.mem_size;
if (boot_param.version >= TRUSTY_VERSION_2) {
trusty_entry_gpa |=
switch (boot_param.version) {
case TRUSTY_VERSION_2:
trusty_entry_gpa = ((uint64_t)boot_param.entry_point) |
(((uint64_t)boot_param.entry_point_high) << 32);
trusty_base_gpa |=
trusty_base_gpa = ((uint64_t)boot_param.base_addr) |
(((uint64_t)boot_param.base_addr_high) << 32);
/* copy rpmb_key from OSloader */
(void)memcpy_s(&g_key_info.rpmb_key[0][0], 64U,
&boot_param.rpmb_key[0], 64U);
(void)memset(&boot_param.rpmb_key[0], 0U, 64U);
break;
case TRUSTY_VERSION:
trusty_entry_gpa = (uint64_t)boot_param.entry_point;
trusty_base_gpa = (uint64_t)boot_param.base_addr;
break;
default:
dev_dbg(ACRN_DBG_TRUSTY, "%s: Version(%u) not supported!\n",
__func__, boot_param.version);
return false;
}
trusty_mem_size = boot_param.mem_size;
create_secure_world_ept(vm, trusty_base_gpa, trusty_mem_size,
TRUSTY_EPT_REBASE_GPA);
trusty_base_hpa = vm->sworld_control.sworld_memory.base_hpa;