[coreboot-gerrit] Patch set updated for coreboot: drivers/intel/fsp2_0: Add utility to parse framebuffer info
Alexandru Gagniuc (mr.nuke.me@gmail.com)
gerrit at coreboot.org
Tue Jan 26 23:19:39 CET 2016
Alexandru Gagniuc (mr.nuke.me at gmail.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13385
-gerrit
commit eb2026aecc6e3de1038cb397eb475d193974cc4d
Author: Alexandru Gagniuc <alexandrux.gagniuc at intel.com>
Date: Tue Dec 15 15:26:10 2015 -0800
drivers/intel/fsp2_0: Add utility to parse framebuffer info
If graphics initialization was succesful, FSP silicon_init will add
a hand-off block containing the description of the framebuffer. Add a
utility to parse this block to a struct lb_framebuffer entry.
Change-Id: I9efcd9f6e0b867cd23b9c9772604411872754c63
Signed-off-by: Alexandru Gagniuc <alexandrux.gagniuc at intel.com>
---
src/drivers/intel/fsp2_0/Makefile.inc | 1 +
src/drivers/intel/fsp2_0/graphics.c | 93 +++++++++++++++++++++++++++++
src/drivers/intel/fsp2_0/include/fsp/util.h | 2 +
3 files changed, 96 insertions(+)
diff --git a/src/drivers/intel/fsp2_0/Makefile.inc b/src/drivers/intel/fsp2_0/Makefile.inc
index d210c21..404f251 100644
--- a/src/drivers/intel/fsp2_0/Makefile.inc
+++ b/src/drivers/intel/fsp2_0/Makefile.inc
@@ -3,6 +3,7 @@ romstage-y += hand_off_block.c
romstage-y += util.c
romstage-y += memory_init.c
+ramstage-y += graphics.c
ramstage-y += hand_off_block.c
ramstage-y += notify.c
ramstage-y += silicon_init.c
diff --git a/src/drivers/intel/fsp2_0/graphics.c b/src/drivers/intel/fsp2_0/graphics.c
new file mode 100644
index 0000000..e7e918b
--- /dev/null
+++ b/src/drivers/intel/fsp2_0/graphics.c
@@ -0,0 +1,93 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Intel Corp.
+ * (Written by Alexandru Gagniuc <alexandrux.gagniuc at intel.com> for Intel Corp.)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <console/console.h>
+#include <fsp/util.h>
+
+enum pixel_format {
+ pixel_rgbx_8bpc = 0,
+ pixel_bgrx_8bpc = 1,
+ pixel_bitmask = 2, /* defined by <rgb>_mask values */
+};
+
+static const uint8_t uuid_graphics_info[16] = {
+ 0xce, 0x2c, 0xf6, 0x39, 0x25, 0x68, 0x69, 0x46,
+ 0xbb, 0x56, 0x54, 0x1a, 0xba, 0x75, 0x3a, 0x07
+};
+
+struct hob_graphics_info {
+ uint64_t framebuffer_base;
+ uint32_t framebuffer_size;
+ uint32_t version;
+ uint32_t horizontal_resolution;
+ uint32_t vertical_resolution;
+ uint32_t pixel_format; /* See enum pixel_format */
+ uint32_t red_mask;
+ uint32_t green_mask;
+ uint32_t blue_mask;
+ uint32_t reserved_mask;
+ uint32_t pixels_per_scanline;
+} __attribute__((packed));
+
+struct pixel {
+ uint8_t pos;
+ uint8_t size;
+};
+
+static const struct fsp_framebuffer {
+ struct pixel red;
+ struct pixel green;
+ struct pixel blue;
+ struct pixel rsvd;
+} fsp_framebuffer_format_map[] = {
+ [pixel_rgbx_8bpc] = { {0, 8}, {8, 8}, {16, 8}, {24, 8} },
+ [pixel_bgrx_8bpc] = { {16, 8}, {8, 8}, {0, 8}, {24, 8} },
+};
+
+enum cb_err fsp_fill_lb_framebuffer(struct lb_framebuffer *framebuffer)
+{
+ size_t size;
+ const struct hob_graphics_info *ginfo;
+ const struct fsp_framebuffer *fbinfo;
+
+ ginfo = fsp_find_extension_hob_by_uuid(uuid_graphics_info, &size);
+
+ if (!ginfo) {
+ printk(BIOS_ALERT, "Graphics hand-off block not found\n");
+ return CB_ERR;
+ }
+
+ if (ginfo->pixel_format > ARRAY_SIZE(fsp_framebuffer_format_map)) {
+ printk(BIOS_ALERT, "FSP set unknown framebuffer format: %d\n",
+ ginfo->pixel_format);
+ return CB_ERR;
+ }
+
+ fbinfo = fsp_framebuffer_format_map + ginfo->pixel_format;
+
+ framebuffer->physical_address = ginfo->framebuffer_base;
+ framebuffer->x_resolution = ginfo->horizontal_resolution;
+ framebuffer->y_resolution = ginfo->vertical_resolution;
+ framebuffer->bytes_per_line = ginfo->pixels_per_scanline * 4;
+ framebuffer->bits_per_pixel = 32;
+ framebuffer->red_mask_pos = fbinfo->red.pos;
+ framebuffer->red_mask_size = fbinfo->red.size;
+ framebuffer->green_mask_pos = fbinfo->green.pos;
+ framebuffer->green_mask_size = fbinfo->green.size;
+ framebuffer->blue_mask_pos = fbinfo->blue.pos;
+ framebuffer->blue_mask_size = fbinfo->blue.size;
+ framebuffer->reserved_mask_pos = fbinfo->rsvd.pos;
+ framebuffer->reserved_mask_size = fbinfo->rsvd.pos;
+ framebuffer->tag = LB_TAG_FRAMEBUFFER;
+ framebuffer->size = sizeof(*framebuffer);
+ return CB_SUCCESS;
+}
diff --git a/src/drivers/intel/fsp2_0/include/fsp/util.h b/src/drivers/intel/fsp2_0/include/fsp/util.h
index 4c47987..cdade32 100644
--- a/src/drivers/intel/fsp2_0/include/fsp/util.h
+++ b/src/drivers/intel/fsp2_0/include/fsp/util.h
@@ -13,6 +13,7 @@
#ifndef _FSP2_0_UTIL_H_
#define _FSP2_0_UTIL_H_
+#include <boot/coreboot_tables.h>
#include <fsp/info_header.h>
#include <device/resource.h>
@@ -23,6 +24,7 @@
void fsp_save_hob_list(void *hob_list_ptr);
const void *fsp_get_hob_list(void);
const void *fsp_find_extension_hob_by_uuid(const uint8_t *uuid, size_t *size);
+enum cb_err fsp_fill_lb_framebuffer(struct lb_framebuffer *framebuffer);
/*
* Hand-off-block utilities which do not depend on CBMEM, but need to be passed
* the HOB list explicitly.
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