From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yinghai Lu Subject: [PATCH] x86, eboot: Support initrd loaded above 4G Date: Sat, 14 Jun 2014 12:23:41 -0700 Message-ID: <1402773821-15995-1-git-send-email-yinghai@kernel.org> Return-path: Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Matt Fleming , "H. Peter Anvin" , Ingo Molnar Cc: linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Yinghai Lu List-Id: linux-efi@vger.kernel.org For boot efi kernel directly without bootloader. If the kernel support XLF_CAN_BE_LOADED_ABOVE_4G, we should not limit initrd under hdr->initrd_add_max. Signed-off-by: Yinghai Lu --- arch/x86/boot/compressed/eboot.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) Index: linux-2.6/arch/x86/boot/compressed/eboot.c =================================================================== --- linux-2.6.orig/arch/x86/boot/compressed/eboot.c +++ linux-2.6/arch/x86/boot/compressed/eboot.c @@ -1038,6 +1038,7 @@ struct boot_params *make_boot_params(str int i; unsigned long ramdisk_addr; unsigned long ramdisk_size; + unsigned long initrd_addr_max; efi_early = c; sys_table = (efi_system_table_t *)(unsigned long)efi_early->table; @@ -1100,14 +1101,21 @@ struct boot_params *make_boot_params(str memset(sdt, 0, sizeof(*sdt)); + if (hdr->xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G) + initrd_addr_max = -1UL; + else + initrd_addr_max = hdr->initrd_addr_max; + status = handle_cmdline_files(sys_table, image, (char *)(unsigned long)hdr->cmd_line_ptr, - "initrd=", hdr->initrd_addr_max, + "initrd=", initrd_addr_max, &ramdisk_addr, &ramdisk_size); if (status != EFI_SUCCESS) goto fail2; - hdr->ramdisk_image = ramdisk_addr; - hdr->ramdisk_size = ramdisk_size; + hdr->ramdisk_image = ramdisk_addr & 0xffffffff; + hdr->ramdisk_size = ramdisk_size & 0xffffffff; + boot_params->ext_ramdisk_image = (u64)ramdisk_addr >> 32; + boot_params->ext_ramdisk_size = (u64)ramdisk_size >> 32; return boot_params; fail2: