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UEFI: change the acrn boot flow on uefi platform

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With current code, the acrn.efi is inserted between
cl bootloader.efi and bzImage.efi that destroyed the chain
relationship of cl bootloader and cl bzImage.efi.
And the following is current boot flow:
UEFI -> cl bootloader.efi -> acrn.efi -> bzImage.efi

The purpose of this patch is resume above chain relationship,
and make uefi vm return to efi stub context once launched,
then continue to call the UEFI API(LoadImage/StartImage) to launch
cl bootloader or other bootloaders. So the boot flow will
change to be as below:
UEFI -> acrn.efi -> cl bootloader.efi -> bzImage.efi

After applying this patch, the code related to loading
bzImage.efi and getting pe_entry is unnecessary due to
the bzImage.efi will not be launched by acrn.efi directly,
so it is removed.

Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
This commit is contained in:
Zheng, Gen
2018-03-29 10:40:11 +08:00
committed by Jack Ren
parent 1f3acb3dd9
commit b240450064
7 changed files with 177 additions and 166 deletions
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21
hypervisor/include/common/acrn_efi.h
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@@ -37,9 +37,7 @@ typedef struct {
} __attribute__((packed)) dt_addr_t;
struct efi_ctx {
void *entry;
void *handle;
void *table;
uint64_t rip;
void *rsdp;
dt_addr_t gdt;
dt_addr_t idt;
@@ -56,8 +54,23 @@ struct efi_ctx {
uint16_t ds_sel;
uint16_t fs_sel;
uint16_t gs_sel;
uint64_t rsp;
uint64_t efer;
uint64_t rax;
uint64_t rbx;
uint64_t rcx;
uint64_t rdx;
uint64_t rdi;
uint64_t rsi;
uint64_t rsp;
uint64_t rbp;
uint64_t r8;
uint64_t r9;
uint64_t r10;
uint64_t r11;
uint64_t r12;
uint64_t r13;
uint64_t r14;
uint64_t r15;
}__attribute__((packed));
void *get_rsdp_from_uefi(void);