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UEFI: change the efi_ctx passing method

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Save the pointer of efi_ctx in mi_drivers_addr field of
multiboot structure and pass to hypervisor, not by
saving in register RDX(the third default parameter in
64bit call function).

With this method, we can be compatible with the original
32bit boot parameters passing method and no need to
large the array size of boot_regs in hypervisor.

Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
This commit is contained in:
Zheng, Gen
2018-03-30 12:31:35 +08:00
committed by Jack Ren
parent b240450064
commit fde0789ccc
4 changed files with 19 additions and 11 deletions
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6
hypervisor/arch/x86/cpu_primary.S
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@@ -118,9 +118,6 @@ cpu_primary_start_64:
/* save the MULTBOOT magic number & MBI */
movl %edi, (boot_regs)
movl %esi, (boot_regs+4)
#ifdef CONFIG_EFI_STUB
movl %edx, (boot_regs+8)
#endif
primary_start_long_mode:
@@ -187,9 +184,6 @@ loop:
boot_regs:
.long 0x00000000
.long 0x00000000
#ifdef CONFIG_EFI_STUB
.long 0x00000000
#endif
/* GDT table */
.align 4