FSP spec 1.1 adds one more member to the struct common_buf to determine the memory size that can be reserved by FSP below "top of low usable memory" for bootloader usage. This new member uses the reserved space so that it is still compatible with previous FSP spec 1.0.
A new HOB (FSP_HOB_RESOURCE_OWNER_BOOTLOADER_TOLUM_GUID) is also published when common_buf.tolum_size is valid and non zero.
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
arch/x86/include/asm/fsp/fsp_api.h | 3 ++- arch/x86/include/asm/fsp/fsp_hob.h | 8 ++++++++ 2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/fsp/fsp_api.h b/arch/x86/include/asm/fsp/fsp_api.h index afafb30..43f0cdb 100644 --- a/arch/x86/include/asm/fsp/fsp_api.h +++ b/arch/x86/include/asm/fsp/fsp_api.h @@ -43,7 +43,8 @@ struct common_buf { u32 stack_top; u32 boot_mode; /* Current system boot mode */ void *upd_data; /* User platform configuraiton data region */ - u32 reserved[7]; /* Reserved */ + u32 tolum_size; /* Top of low usable memory size (FSP 1.1) */ + u32 reserved[6]; /* Reserved */ };
enum fsp_phase { diff --git a/arch/x86/include/asm/fsp/fsp_hob.h b/arch/x86/include/asm/fsp/fsp_hob.h index 7c22bcd..8ce665e 100644 --- a/arch/x86/include/asm/fsp/fsp_hob.h +++ b/arch/x86/include/asm/fsp/fsp_hob.h @@ -242,4 +242,12 @@ static inline u16 get_guid_hob_data_size(const struct hob_header *hdr) { 0x82, 0xb9, 0x56, 0xa5, 0xf3, 0xe6, 0x2a, 0x07 } \ }
+/* The following GUIDs are newly introduced in FSP spec 1.1 */ + +#define FSP_HOB_RESOURCE_OWNER_BOOTLOADER_TOLUM_GUID \ + { \ + 0x73ff4f56, 0xaa8e, 0x4451, \ + { 0xb3, 0x16, 0x36, 0x35, 0x36, 0x67, 0xad, 0x44 } \ + } + #endif