diff options
Diffstat (limited to 'payloads/libpayload/arch/x86/rom_media.c')
| -rw-r--r-- | payloads/libpayload/arch/x86/rom_media.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/payloads/libpayload/arch/x86/rom_media.c b/payloads/libpayload/arch/x86/rom_media.c deleted file mode 100644 index ffb3809e5d23..000000000000 --- a/payloads/libpayload/arch/x86/rom_media.c +++ /dev/null @@ -1,110 +0,0 @@ -/* - * - * Copyright (C) 2013 Google, Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -#define LIBPAYLOAD - -#include <cbfs.h> -#include <string.h> - -#ifdef LIBPAYLOAD -# define printk(x...) -# define init_default_cbfs_media libpayload_init_default_cbfs_media - extern int libpayload_init_default_cbfs_media(struct cbfs_media *media); -#else -# include <console/console.h> -#endif - -// Implementation of memory-mapped ROM media source on X86. - -static int x86_rom_open(struct cbfs_media *media) { - return 0; -} - -static void *x86_rom_map(struct cbfs_media *media, size_t offset, size_t count) { - void *ptr; - // Some address (ex, pointer to master header) may be given in memory - // mapped location. To workaround that, we handle >0xf0000000 as real - // memory pointer. - - if ((uint32_t)offset > (uint32_t)0xf0000000) - ptr = (void*)offset; - else - ptr = (void*)(0 - (uint32_t)media->context + offset); - return ptr; -} - -static void *x86_rom_unmap(struct cbfs_media *media, const void *address) { - return NULL; -} - -static size_t x86_rom_read(struct cbfs_media *media, void *dest, size_t offset, - size_t count) { - void *ptr = x86_rom_map(media, offset, count); - memcpy(dest, ptr, count); - x86_rom_unmap(media, ptr); - return count; -} - -static int x86_rom_close(struct cbfs_media *media) { - return 0; -} - -int init_x86rom_cbfs_media(struct cbfs_media *media); -int init_x86rom_cbfs_media(struct cbfs_media *media) { - // On X86, we always keep a reference of pointer to CBFS header in - // 0xfffffffc, and the pointer is still a memory-mapped address. - // Since the CBFS core always use ROM offset, we need to figure out - // header->romsize even before media is initialized. - struct cbfs_header *header = (struct cbfs_header*) - *(uint32_t*)(0xfffffffc); - if (CBFS_HEADER_MAGIC != ntohl(header->magic)) { -#if CONFIG(LP_ROM_SIZE) - printk(BIOS_ERR, "Invalid CBFS master header at %p\n", header); - media->context = (void*)CONFIG_LP_ROM_SIZE; -#else - return -1; -#endif - } else { - uint32_t romsize = ntohl(header->romsize); - media->context = (void*)romsize; -#if CONFIG(LP_ROM_SIZE) - if (CONFIG_LP_ROM_SIZE != romsize) - printk(BIOS_WARNING, "rom size unmatch (%d/%d)\n", - CONFIG_LP_ROM_SIZE, romsize); -#endif - } - media->open = x86_rom_open; - media->close = x86_rom_close; - media->map = x86_rom_map; - media->unmap = x86_rom_unmap; - media->read = x86_rom_read; - return 0; -} - -int init_default_cbfs_media(struct cbfs_media *media) { - return init_x86rom_cbfs_media(media); -} |