mirror of https://gitee.com/openkylin/linux.git
89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
/*
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* linux/arch/arm/plat-omap/common.c
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*
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* Code common to all OMAP machines.
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* The file is created by Tony Lindgren <tony@atomide.com>
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*
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* Copyright (C) 2009 Texas Instruments
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* Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/dma-mapping.h>
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#include <plat/common.h>
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#include <plat/board.h>
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#include <plat/vram.h>
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#include <plat/dsp.h>
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#include <plat/dma.h>
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#include <plat/omap-secure.h>
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#define NO_LENGTH_CHECK 0xffffffff
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struct omap_board_config_kernel *omap_board_config __initdata;
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int omap_board_config_size;
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static const void *__init get_config(u16 tag, size_t len,
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int skip, size_t *len_out)
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{
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struct omap_board_config_kernel *kinfo = NULL;
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int i;
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/* Try to find the config from the board-specific structures
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* in the kernel. */
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for (i = 0; i < omap_board_config_size; i++) {
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if (omap_board_config[i].tag == tag) {
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if (skip == 0) {
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kinfo = &omap_board_config[i];
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break;
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} else {
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skip--;
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}
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}
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}
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if (kinfo == NULL)
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return NULL;
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return kinfo->data;
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}
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const void *__init __omap_get_config(u16 tag, size_t len, int nr)
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{
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return get_config(tag, len, nr, NULL);
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}
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const void *__init omap_get_var_config(u16 tag, size_t *len)
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{
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return get_config(tag, NO_LENGTH_CHECK, 0, len);
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}
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void __init omap_reserve(void)
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{
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omap_vram_reserve_sdram_memblock();
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omap_dsp_reserve_sdram_memblock();
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omap_secure_ram_reserve_memblock();
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omap_barrier_reserve_memblock();
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}
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void __init omap_init_consistent_dma_size(void)
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{
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#ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
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init_consistent_dma_size(CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE << 20);
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#endif
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}
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/*
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* Stub function for OMAP2 so that common files
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* continue to build when custom builds are used
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*/
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int __weak omap_secure_ram_reserve_memblock(void)
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{
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return 0;
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}
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