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527ba810ef
At present reading data from storage in Vboot is a little fragmented. For the firmware image, we expect the boot loader to handle this. For the disk we have a block-level API. For the GBB (which also sits in the firmware image) we expect the entire thing to be read before Vboot is called. Add the concept of a region, and an API to read from a region. At present, and most pressing, is reading from a GBB region. In the future this could be extended to other parts of the firmware or even the disk. Move all access to the GBB into this API so that the boot loader can provide either a GBB region in one large contiguous chunk, or a function to deal with read requests from vboot. The call to VbExRegionRead() is behind a flag since not all boot loaders support it yet. The main change for boot loaders which don't support this new API is that vboot will do more behind the scenes. For example, it will allocate memory for chunks of data that it reads from the GBB, rather than just accessing it directly. This approach is considerably simpler than trying to pass char ** everywhere and have vboot decide whether something needs to be allocated or not. The tests are updated, mainly to include setting up a GBB structure accessible from VbCommonParams, which is now required by the firmware and kernel functions. In normal operation this is set up at the start of VbLoadFIrmware() and VbSelectAndLoadKernel() but for tests which call children of these functions directly, the GBB structure must be set up manually by the test. BUG=chrome-os-partner:21115 BRANCH=none TEST=manual FEATURES=test sudo -E emerge vboot_reference Change-Id: If2b8bbe467fdbd643239d8d9b5d7aa98df4d286f Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/63336 Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/167361
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Display functions used in kernel selection.
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*/
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#ifndef VBOOT_REFERENCE_VBOOT_DISPLAY_H_
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#define VBOOT_REFERENCE_VBOOT_DISPLAY_H_
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#include "bmpblk_font.h"
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#include "vboot_api.h"
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#include "vboot_nvstorage.h"
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VbError_t VbDisplayScreenFromGBB(VbCommonParams *cparams, uint32_t screen,
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VbNvContext *vncptr);
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VbError_t VbDisplayScreen(VbCommonParams *cparams, uint32_t screen, int force,
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VbNvContext *vncptr);
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VbError_t VbDisplayDebugInfo(VbCommonParams *cparams, VbNvContext *vncptr);
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VbError_t VbCheckDisplayKey(VbCommonParams *cparams, uint32_t key,
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VbNvContext *vncptr);
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/* Internal functions, for unit testing */
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typedef FontArrayHeader VbFont_t;
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VbFont_t *VbInternalizeFontData(FontArrayHeader *fonthdr);
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void VbDoneWithFontForNow(VbFont_t *ptr);
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ImageInfo *VbFindFontGlyph(VbFont_t *font, uint32_t ascii,
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void **bufferptr, uint32_t *buffersize);
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/**
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* Try to display the specified text at a particular position.
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*/
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void VbRenderTextAtPos(const char *text, int right_to_left,
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uint32_t x, uint32_t y, VbFont_t *font);
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/**
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* Return a description of the recovery reason code.
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*/
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const char *RecoveryReasonString(uint8_t code);
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/**
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* Get the number of localizations in the GBB bitmap data.
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*/
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VbError_t VbGetLocalizationCount(VbCommonParams *cparams, uint32_t *count);
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#endif /* VBOOT_REFERENCE_VBOOT_DISPLAY_H_ */
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