This patch adds efi_arch_memory() to allow each architecture a hook to use for do memory setup. x86 uses this for trampoline memory setup and some pagetable setup.
Signed-off-by: Roy Franz roy.franz@linaro.org --- xen/common/efi/boot.c | 29 +---------------------------- xen/include/asm-x86/efi-boot.h | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+), 28 deletions(-)
diff --git a/xen/common/efi/boot.c b/xen/common/efi/boot.c index 3fe04fd..9ee3b4a 100644 --- a/xen/common/efi/boot.c +++ b/xen/common/efi/boot.c @@ -838,34 +838,7 @@ efi_start(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) PrintStr(newline); }
- /* Allocate space for trampoline (in first Mb). */ - cfg.addr = 0x100000; - cfg.size = trampoline_end - trampoline_start; - status = efi_bs->AllocatePages(AllocateMaxAddress, EfiLoaderData, - PFN_UP(cfg.size), &cfg.addr); - if ( status == EFI_SUCCESS ) - relocate_trampoline(cfg.addr); - else - { - cfg.addr = 0; - PrintStr(L"Trampoline space cannot be allocated; will try fallback.\r\n"); - } - - /* Initialise L2 identity-map and boot-map page table entries (16MB). */ - for ( i = 0; i < 8; ++i ) - { - unsigned int slot = (xen_phys_start >> L2_PAGETABLE_SHIFT) + i; - paddr_t addr = slot << L2_PAGETABLE_SHIFT; - - l2_identmap[slot] = l2e_from_paddr(addr, PAGE_HYPERVISOR|_PAGE_PSE); - slot &= L2_PAGETABLE_ENTRIES - 1; - l2_bootmap[slot] = l2e_from_paddr(addr, __PAGE_HYPERVISOR|_PAGE_PSE); - } - /* Initialise L3 boot-map page directory entries. */ - l3_bootmap[l3_table_offset(xen_phys_start)] = - l3e_from_paddr((UINTN)l2_bootmap, __PAGE_HYPERVISOR); - l3_bootmap[l3_table_offset(xen_phys_start + (8 << L2_PAGETABLE_SHIFT) - 1)] = - l3e_from_paddr((UINTN)l2_bootmap, __PAGE_HYPERVISOR); + efi_arch_memory();
efi_arch_video(base_video, cols, rows, depth, gop);
diff --git a/xen/include/asm-x86/efi-boot.h b/xen/include/asm-x86/efi-boot.h index 711ab12..e1cbdfc 100644 --- a/xen/include/asm-x86/efi-boot.h +++ b/xen/include/asm-x86/efi-boot.h @@ -937,3 +937,38 @@ static void __init efi_arch_video(bool_t base_video, } } } + +static void __init efi_arch_memory(void) +{ + int i; + EFI_STATUS status; + + /* Allocate space for trampoline (in first Mb). */ + cfg.addr = 0x100000; + cfg.size = trampoline_end - trampoline_start; + status = efi_bs->AllocatePages(AllocateMaxAddress, EfiLoaderData, + PFN_UP(cfg.size), &cfg.addr); + if ( status == EFI_SUCCESS ) + relocate_trampoline(cfg.addr); + else + { + cfg.addr = 0; + PrintStr(L"Trampoline space cannot be allocated; will try fallback.\r\n"); + } + + /* Initialise L2 identity-map and boot-map page table entries (16MB). */ + for ( i = 0; i < 8; ++i ) + { + unsigned int slot = (xen_phys_start >> L2_PAGETABLE_SHIFT) + i; + paddr_t addr = slot << L2_PAGETABLE_SHIFT; + + l2_identmap[slot] = l2e_from_paddr(addr, PAGE_HYPERVISOR|_PAGE_PSE); + slot &= L2_PAGETABLE_ENTRIES - 1; + l2_bootmap[slot] = l2e_from_paddr(addr, __PAGE_HYPERVISOR|_PAGE_PSE); + } + /* Initialise L3 boot-map page directory entries. */ + l3_bootmap[l3_table_offset(xen_phys_start)] = + l3e_from_paddr((UINTN)l2_bootmap, __PAGE_HYPERVISOR); + l3_bootmap[l3_table_offset(xen_phys_start + (8 << L2_PAGETABLE_SHIFT) - 1)] = + l3e_from_paddr((UINTN)l2_bootmap, __PAGE_HYPERVISOR); +}