From 4bf7111f50167133a71c23530ca852a41355e739 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Sat, 14 Jun 2014 12:23:41 -0700 Subject: [PATCH] x86/efi: Support initrd loaded above 4G 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 Signed-off-by: Matt Fleming --- arch/x86/boot/compressed/eboot.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index 0331d765c2bb..385f42c200bc 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -1038,6 +1038,7 @@ struct boot_params *make_boot_params(struct efi_config *c) 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(struct efi_config *c) 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: -- 2.20.1