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HV: boot guest with boot params

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Previously the load GPA of LaaG boot params like zeropage/cmdline and
initgdt are all hard-coded, this would bring potential LaaG boot issues.

The patch will try to fix this issue by finding a 32KB load_params memory
block for LaaG to store these guest boot params.

For other guest with raw image, in general only vgdt need to be cared of so
the load_params will be put at 0x800 since it is a common place that most
guests won't touch for entering protected mode.

Tracked-On: #5626

Signed-off-by: Victor Sun <victor.sun@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
This commit is contained in:
Victor Sun
2021-05-24 01:51:32 +08:00
committed by wenlingz
parent ed97022646
commit 268d4c3f3c
3 changed files with 120 additions and 75 deletions
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6
hypervisor/boot/guest/vboot_info.c
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@@ -152,12 +152,6 @@ static void init_vm_bootargs_info(struct acrn_vm *vm, const struct acrn_boot_inf
vm->sw.bootargs_info.size = strnlen_s((const char *)vm->sw.bootargs_info.src_addr, MAX_BOOTARGS_SIZE);
/* Kernel bootarg and zero page are right before the kernel image */
if (vm->sw.bootargs_info.size > 0U) {
vm->sw.bootargs_info.load_addr = vm->sw.kernel_info.kernel_load_addr - (MEM_1K * 8U);
} else {
vm->sw.bootargs_info.load_addr = NULL;
}
}
/* @pre abi != NULL && tag != NULL