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hv: remove the hardcoding of Software SRAM GPA base

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Currently, we hardcode the GPA base of Software SRAM
 to an address that is derived from TGL platform,
 as this GPA is identical with HPA for Pre-launch VM,
 This hardcoded address may not work on other platforms
 if the HPA bases of Software SRAM are different.

 Now, Offline tool configures above GPA based on the
 detection of Software SRAM on specific platform.

 This patch removes the hardcoding GPA of Software SRAM,
 and also renames MACRO 'SOFTWARE_SRAM_BASE_GPA' to
 'PRE_RTVM_SW_SRAM_BASE_GPA' to avoid confusing, as it
 is for Prelaunch VM only.

Tracked-On: #5649
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yonghua Huang
2021-01-28 17:57:00 +08:00
committed by wenlingz
parent f7772a98ee
commit 8bec63a6ea
3 changed files with 29 additions and 18 deletions
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4
hypervisor/arch/x86/guest/vm.c
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@@ -231,11 +231,11 @@ static void prepare_prelaunched_vm_memmap(struct acrn_vm *vm, const struct acrn_
if (entry->length == 0UL) {
continue;
} else {
if (is_sw_sram_initialized && (entry->baseaddr == SOFTWARE_SRAM_BASE_GPA) &&
if (is_sw_sram_initialized && (entry->baseaddr == PRE_RTVM_SW_SRAM_BASE_GPA) &&
((vm_config->guest_flags & GUEST_FLAG_RT) != 0U)){
/* pass through Software SRAM to pre-RTVM */
ept_add_mr(vm, (uint64_t *)vm->arch_vm.nworld_eptp,
get_software_sram_base(), SOFTWARE_SRAM_BASE_GPA,
get_software_sram_base(), PRE_RTVM_SW_SRAM_BASE_GPA,
get_software_sram_size(), EPT_RWX | EPT_WB);
continue;
}