This adds a new HOB type for graphics information introduced in FSP
spec 1.1. When graphics capability is included in FSP and enabled,
FSP produces an FSP_GRAPHICS_INFO_HOB as described in the EFI PI
specification which provides information about the graphics mode and
framebuffer.
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
arch/x86/include/asm/fsp/fsp_hob.h | 26 ++++++++++++++++++++++++++
arch/x86/include/asm/fsp/fsp_support.h | 12 ++++++++++++
arch/x86/lib/fsp/fsp_support.c | 7 +++++++
3 files changed, 45 insertions(+)
diff --git a/arch/x86/include/asm/fsp/fsp_hob.h
b/arch/x86/include/asm/fsp/fsp_hob.h
index 8ce665e..244f86e 100644
--- a/arch/x86/include/asm/fsp/fsp_hob.h
+++ b/arch/x86/include/asm/fsp/fsp_hob.h
@@ -127,6 +127,26 @@ struct hob_guid {
/* GUID specific data goes here */
};
+enum pixel_format {
+ pixel_rgbx_8bpc, /* RGB 8 bit per color */
+ pixel_bgrx_8bpc, /* BGR 8 bit per color */
+ pixel_bitmask,
+};
+
+struct __packed hob_graphics_info {
+ phys_addr_t fb_base; /* framebuffer base address */
+ u32 fb_size; /* framebuffer size */
+ u32 version;
+ u32 width;
+ u32 height;
+ enum pixel_format pixel_format;
+ u32 red_mask;
+ u32 green_mask;
+ u32 blue_mask;
+ u32 reserved_mask;
+ u32 pixels_per_scanline;
+};
+
/**
* get_next_hob() - return a pointer to the next HOB in the HOB list
*
@@ -250,4 +270,10 @@ static inline u16 get_guid_hob_data_size(const struct
hob_header *hdr)
{ 0xb3, 0x16, 0x36, 0x35, 0x36, 0x67, 0xad, 0x44 } \
}
+#define FSP_GRAPHICS_INFO_HOB_GUID \
+ { \
+ 0x39f62cce, 0x6825, 0x4669, \
+ { 0xbb, 0x56, 0x54, 0x1a, 0xba, 0x75, 0x3a, 0x07 } \
+ }
+
#endif
diff --git a/arch/x86/include/asm/fsp/fsp_support.h
b/arch/x86/include/asm/fsp/fsp_support.h
index 61d811f..97a50b0 100644
--- a/arch/x86/include/asm/fsp/fsp_support.h
+++ b/arch/x86/include/asm/fsp/fsp_support.h
@@ -191,6 +191,18 @@ void *fsp_get_nvs_data(const void *hob_list, u32 *len);
void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32 *len);
/**
+ * This function retrieves graphics information.
+ *
+ * @hob_list: A HOB list pointer.
+ * @len: A pointer to the graphics info HOB length.
+ * If the HOB is located, the length will be updated.
+ *
+ * @retval NULL: Failed to find the graphics info HOB.
+ * @retval others: A pointer to struct hob_graphics_info.
+ */
+void *fsp_get_graphics_info(const void *hob_list, u32 *len);
+
+/**
* This function overrides the default configurations of FSP.
*
* @config: A pointer to the FSP configuration data structure
diff --git a/arch/x86/lib/fsp/fsp_support.c b/arch/x86/lib/fsp/fsp_support.c
index ab8340c..e0c49be 100644
--- a/arch/x86/lib/fsp/fsp_support.c
+++ b/arch/x86/lib/fsp/fsp_support.c
@@ -425,3 +425,10 @@ void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32
*len)
return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid);
}
+
+void *fsp_get_graphics_info(const void *hob_list, u32 *len)
+{
+ const struct efi_guid guid = FSP_GRAPHICS_INFO_HOB_GUID;
+
+ return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid);
+}
--
2.9.2
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
