Messages in this thread Patch in this message | | | From | Yinghai Lu <> | Subject | [PATCH 2/2 v2] efilinux: set ext_ramdisk_* for huge initrd | Date | Wed, 25 Jun 2014 14:24:27 -0700 |
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We could load it high if it is more than 2G when kernel support LOAD_ABOVE_4G.
-v2: Use macro instead of (1<<1) directly for LOAD_ABOVE_4G.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
--- loaders/bzimage/bzimage.c | 9 ++++++++- loaders/bzimage/bzimage.h | 15 +++++++++++++-- 2 files changed, 21 insertions(+), 3 deletions(-)
Index: efilinux/loaders/bzimage/bzimage.c =================================================================== --- efilinux.orig/loaders/bzimage/bzimage.c +++ efilinux/loaders/bzimage/bzimage.c @@ -130,7 +130,9 @@ static void parse_initrd(EFI_LOADED_IMAG if (err != EFI_SUCCESS) goto close_handles; - if ((UINTN)addr > boot_params->hdr.ramdisk_max) { + if ((boot_params->hdr.version < 0x20c || + !(boot_params->hdr.xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G)) && + (UINTN)addr > boot_params->hdr.ramdisk_max) { Print(L"ramdisk address is too high!\n"); efree(addr, size); goto close_handles; @@ -138,6 +140,11 @@ static void parse_initrd(EFI_LOADED_IMAG boot_params->hdr.ramdisk_start = (UINT32)(UINTN)addr; boot_params->hdr.ramdisk_len = (UINT32)size; + if (boot_params->hdr.version >= 0x20c && + (boot_params->hdr.xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G)) { + boot_params->ext_ramdisk_image = (UINT64)(UINTN)addr >> 32; + boot_params->ext_ramdisk_size = size >> 32; + } for (j = 0; j < nr_initrds; j++) { struct initrd *rd = &initrds[j]; Index: efilinux/loaders/bzimage/bzimage.h =================================================================== --- efilinux.orig/loaders/bzimage/bzimage.h +++ efilinux/loaders/bzimage/bzimage.h @@ -40,6 +40,13 @@ #define E820_NVS 4 #define E820_UNUSABLE 5 +/* xloadflags */ +#define XLF_KERNEL_64 (1<<0) +#define XLF_CAN_BE_LOADED_ABOVE_4G (1<<1) +#define XLF_EFI_HANDOVER_32 (1<<2) +#define XLF_EFI_HANDOVER_64 (1<<3) +#define XLF_EFI_KEXEC (1<<4) + struct setup_header { UINT8 setup_secs; /* Sectors for setup code */ UINT16 root_flags; @@ -69,7 +76,8 @@ struct setup_header { UINT32 ramdisk_max; /* Highest legal initrd address */ UINT32 kernel_alignment; /* Physical addr alignment required for kernel */ UINT8 relocatable_kernel; /* Whether kernel is relocatable or not */ - UINT8 _pad2[3]; + UINT8 min_alignment; + UINT16 xloadflags; UINT32 cmdline_size; UINT32 hardware_subarch; UINT64 hardware_subarch_data; @@ -148,7 +156,10 @@ struct boot_params { UINT8 hd1_info[16]; UINT8 sys_desc_table[0x10]; UINT8 olpc_ofw_header[0x10]; - UINT8 _pad4[128]; + UINT32 ext_ramdisk_image; + UINT32 ext_ramdisk_size; + UINT32 ext_cmd_line_ptr; + UINT8 _pad4[116]; UINT8 edid_info[0x80]; struct efi_info efi_info; UINT32 alt_mem_k;
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