HV: separate linux loader from direct boot sw loader
Currently the algorithm of direct_boot_sw_loader() is Linux bzImage specific, so separate the bzImage specific loader code from it to make the api more generic for other OS; Tracked-On: #3214 Signed-off-by: Victor Sun <victor.sun@intel.com> Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
This commit is contained in:
parent
0f00a4b0da
commit
1c00611382
|
@ -98,24 +98,16 @@ static uint64_t create_zero_page(struct acrn_vm *vm)
|
|||
return gpa;
|
||||
}
|
||||
|
||||
int32_t direct_boot_sw_loader(struct acrn_vm *vm)
|
||||
static void prepare_loading_bzimage(struct acrn_vm *vm, struct acrn_vcpu *vcpu)
|
||||
{
|
||||
int32_t ret = 0;
|
||||
uint32_t i;
|
||||
char dyn_bootargs[100] = {0};
|
||||
uint32_t kernel_entry_offset;
|
||||
struct zero_page *zeropage;
|
||||
struct sw_kernel_info *sw_kernel = &(vm->sw.kernel_info);
|
||||
struct sw_module_info *bootargs_info = &(vm->sw.bootargs_info);
|
||||
struct sw_module_info *ramdisk_info = &(vm->sw.ramdisk_info);
|
||||
/* get primary vcpu */
|
||||
struct acrn_vcpu *vcpu = vcpu_from_vid(vm, BOOT_CPU_ID);
|
||||
const struct acrn_vm_config *vm_config = get_vm_config(vm->vm_id);
|
||||
|
||||
pr_dbg("Loading guest to run-time location");
|
||||
|
||||
prepare_bsp_gdt(vm);
|
||||
set_vcpu_regs(vcpu, &boot_context);
|
||||
|
||||
/* calculate the kernel entry point */
|
||||
zeropage = (struct zero_page *)sw_kernel->kernel_src_addr;
|
||||
stac();
|
||||
|
@ -128,19 +120,6 @@ int32_t direct_boot_sw_loader(struct acrn_vm *vm)
|
|||
|
||||
sw_kernel->kernel_entry_addr = (void *)((uint64_t)sw_kernel->kernel_load_addr + kernel_entry_offset);
|
||||
|
||||
/* Set VCPU entry point to kernel entry */
|
||||
vcpu_set_rip(vcpu, (uint64_t)sw_kernel->kernel_entry_addr);
|
||||
pr_info("%s, VM %hu VCPU %hu Entry: 0x%016llx ", __func__, vm->vm_id, vcpu->vcpu_id,
|
||||
sw_kernel->kernel_entry_addr);
|
||||
|
||||
/* Copy the guest kernel image to its run-time location */
|
||||
(void)copy_to_gpa(vm, sw_kernel->kernel_src_addr,
|
||||
(uint64_t)sw_kernel->kernel_load_addr, sw_kernel->kernel_size);
|
||||
|
||||
/* See if guest is a Linux guest */
|
||||
if (vm->sw.kernel_type == VM_LINUX_GUEST) {
|
||||
uint32_t i;
|
||||
|
||||
/* Documentation states: ebx=0, edi=0, ebp=0, esi=ptr to
|
||||
* zeropage
|
||||
*/
|
||||
|
@ -164,12 +143,36 @@ int32_t direct_boot_sw_loader(struct acrn_vm *vm)
|
|||
if (reserving_1g_pages > 0) {
|
||||
snprintf(dyn_bootargs, 100U, " hugepagesz=1G hugepages=%lld", reserving_1g_pages);
|
||||
(void)copy_to_gpa(vm, dyn_bootargs, ((uint64_t)bootargs_info->load_addr
|
||||
+ bootargs_info->size),
|
||||
(strnlen_s(dyn_bootargs, 99U) + 1U));
|
||||
+ bootargs_info->size), (strnlen_s(dyn_bootargs, 99U) + 1U));
|
||||
}
|
||||
}
|
||||
|
||||
/* Check if a RAM disk is present with Linux guest */
|
||||
/* Create Zeropage and copy Physical Base Address of Zeropage
|
||||
* in RSI
|
||||
*/
|
||||
vcpu_set_gpreg(vcpu, CPU_REG_RSI, create_zero_page(vm));
|
||||
pr_info("%s, RSI pointing to zero page for VM %d at GPA %X",
|
||||
__func__, vm->vm_id, vcpu_get_gpreg(vcpu, CPU_REG_RSI));
|
||||
}
|
||||
|
||||
int32_t direct_boot_sw_loader(struct acrn_vm *vm)
|
||||
{
|
||||
int32_t ret = 0;
|
||||
struct sw_kernel_info *sw_kernel = &(vm->sw.kernel_info);
|
||||
struct sw_module_info *ramdisk_info = &(vm->sw.ramdisk_info);
|
||||
/* get primary vcpu */
|
||||
struct acrn_vcpu *vcpu = vcpu_from_vid(vm, BOOT_CPU_ID);
|
||||
|
||||
pr_dbg("Loading guest to run-time location");
|
||||
|
||||
prepare_bsp_gdt(vm);
|
||||
set_vcpu_regs(vcpu, &boot_context);
|
||||
|
||||
/* Copy the guest kernel image to its run-time location */
|
||||
(void)copy_to_gpa(vm, sw_kernel->kernel_src_addr,
|
||||
(uint64_t)sw_kernel->kernel_load_addr, sw_kernel->kernel_size);
|
||||
|
||||
/* Check if a RAM disk is present */
|
||||
if (ramdisk_info->src_addr != NULL) {
|
||||
/* Copy RAM disk to its load location */
|
||||
(void)copy_to_gpa(vm, ramdisk_info->src_addr,
|
||||
|
@ -177,18 +180,20 @@ int32_t direct_boot_sw_loader(struct acrn_vm *vm)
|
|||
ramdisk_info->size);
|
||||
}
|
||||
|
||||
/* Create Zeropage and copy Physical Base Address of Zeropage
|
||||
* in RSI
|
||||
*/
|
||||
vcpu_set_gpreg(vcpu, CPU_REG_RSI, create_zero_page(vm));
|
||||
|
||||
pr_info("%s, RSI pointing to zero page for VM %d at GPA %X",
|
||||
__func__, vm->vm_id, vcpu_get_gpreg(vcpu, CPU_REG_RSI));
|
||||
|
||||
/* See if guest is a Linux guest */
|
||||
if (vm->sw.kernel_type == VM_LINUX_GUEST) {
|
||||
prepare_loading_bzimage(vm, vcpu);
|
||||
} else {
|
||||
pr_err("%s, Loading VM SW failed", __func__);
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
if (ret == 0) {
|
||||
/* Set VCPU entry point to kernel entry */
|
||||
vcpu_set_rip(vcpu, (uint64_t)sw_kernel->kernel_entry_addr);
|
||||
pr_info("%s, VM %hu VCPU %hu Entry: 0x%016llx ", __func__, vm->vm_id, vcpu->vcpu_id,
|
||||
sw_kernel->kernel_entry_addr);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue