1ee2c6dbdf
When libpayload header files are included in the payload itself, it's possible that the payloads config settings will conflict with the ones in libpayload. It's also possible for the libpayload config settings to conflict with the payloads. To avoid that, the libpayload config settings have _LP_ (for libpayload) added to them. The symbols themselves as defined in the Config.in files are still the same, but the prefix added to them is now CONFIG_LP_ instead of just CONFIG_. Change-Id: Ib8a46d202e7880afdeac7924d69a949bfbcc5f97 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://gerrit.chromium.org/gerrit/65303 Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 23e866da20862cace0ed2a67d6fb74056bc9ea9a) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6427 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Marc Jones <marc.jones@se-eng.com>
111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2013 Google, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define LIBPAYLOAD
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#include <cbfs.h>
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#include <string.h>
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#ifdef LIBPAYLOAD
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# define printk(x...)
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# define init_default_cbfs_media libpayload_init_default_cbfs_media
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extern int libpayload_init_default_cbfs_media(struct cbfs_media *media);
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#else
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# include <console/console.h>
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#endif
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// Implementation of memory-mapped ROM media source on X86.
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static int x86_rom_open(struct cbfs_media *media) {
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return 0;
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}
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static void *x86_rom_map(struct cbfs_media *media, size_t offset, size_t count) {
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void *ptr;
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// Some address (ex, pointer to master header) may be given in memory
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// mapped location. To workaround that, we handle >0xf0000000 as real
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// memory pointer.
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if ((uint32_t)offset > (uint32_t)0xf0000000)
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ptr = (void*)offset;
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else
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ptr = (void*)(0 - (uint32_t)media->context + offset);
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return ptr;
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}
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static void *x86_rom_unmap(struct cbfs_media *media, const void *address) {
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return NULL;
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}
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static size_t x86_rom_read(struct cbfs_media *media, void *dest, size_t offset,
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size_t count) {
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void *ptr = x86_rom_map(media, offset, count);
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memcpy(dest, ptr, count);
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x86_rom_unmap(media, ptr);
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return count;
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}
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static int x86_rom_close(struct cbfs_media *media) {
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return 0;
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}
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int init_x86rom_cbfs_media(struct cbfs_media *media);
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int init_x86rom_cbfs_media(struct cbfs_media *media) {
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// On X86, we always keep a reference of pointer to CBFS header in
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// 0xfffffffc, and the pointer is still a memory-mapped address.
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// Since the CBFS core always use ROM offset, we need to figure out
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// header->romsize even before media is initialized.
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struct cbfs_header *header = (struct cbfs_header*)
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*(uint32_t*)(0xfffffffc);
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if (CBFS_HEADER_MAGIC != ntohl(header->magic)) {
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#if defined(CONFIG_LP_ROM_SIZE)
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printk(BIOS_ERR, "Invalid CBFS master header at %p\n", header);
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media->context = (void*)CONFIG_LP_ROM_SIZE;
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#else
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return -1;
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#endif
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} else {
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uint32_t romsize = ntohl(header->romsize);
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media->context = (void*)romsize;
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#if defined(CONFIG_LP_ROM_SIZE)
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if (CONFIG_LP_ROM_SIZE != romsize)
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printk(BIOS_INFO, "Warning: rom size unmatch (%d/%d)\n",
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CONFIG_LP_ROM_SIZE, romsize);
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#endif
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}
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media->open = x86_rom_open;
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media->close = x86_rom_close;
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media->map = x86_rom_map;
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media->unmap = x86_rom_unmap;
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media->read = x86_rom_read;
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return 0;
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}
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int init_default_cbfs_media(struct cbfs_media *media) {
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return init_x86rom_cbfs_media(media);
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}
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