mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 14:16:17 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2014
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* Texas Instruments, <www.ti.com>
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*/
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#ifndef _TI_COMMON_SYS_PROTO_H_
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#define _TI_COMMON_SYS_PROTO_H_
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_ARCH_OMAP2PLUS
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#define TI_ARMV7_DRAM_ADDR_SPACE_START 0x80000000
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#define TI_ARMV7_DRAM_ADDR_SPACE_END 0xFFFFFFFF
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#define OMAP_INIT_CONTEXT_SPL 0
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#define OMAP_INIT_CONTEXT_UBOOT_FROM_NOR 1
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#define OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL 2
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#define OMAP_INIT_CONTEXT_UBOOT_AFTER_CH 3
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static inline u32 running_from_sdram(void)
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{
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u32 pc;
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asm volatile ("mov %0, pc" : "=r" (pc));
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return ((pc >= TI_ARMV7_DRAM_ADDR_SPACE_START) &&
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(pc < TI_ARMV7_DRAM_ADDR_SPACE_END));
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}
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static inline u8 uboot_loaded_by_spl(void)
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{
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/*
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* u-boot can be running from sdram either because of configuration
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* Header or by SPL. If because of CH, then the romcode sets the
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* CHSETTINGS executed bit to true in the boot parameter structure that
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* it passes to the bootloader.This parameter is stored in the ch_flags
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* variable by both SPL and u-boot.Check out for CHSETTINGS, which is a
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* mandatory section if CH is present.
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*/
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if (gd->arch.omap_ch_flags & CH_FLAGS_CHSETTINGS)
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return 0;
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else
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return running_from_sdram();
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}
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/*
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* The basic hardware init of OMAP(s_init()) can happen in 4
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* different contexts:
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* 1. SPL running from SRAM
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* 2. U-Boot running from FLASH
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* 3. Non-XIP U-Boot loaded to SDRAM by SPL
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* 4. Non-XIP U-Boot loaded to SDRAM by ROM code using the
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* Configuration Header feature
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*
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* This function finds this context.
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* Defining as inline may help in compiling out unused functions in SPL
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*/
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static inline u32 omap_hw_init_context(void)
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{
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#ifdef CONFIG_SPL_BUILD
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return OMAP_INIT_CONTEXT_SPL;
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#else
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if (uboot_loaded_by_spl())
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return OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL;
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else if (running_from_sdram())
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return OMAP_INIT_CONTEXT_UBOOT_AFTER_CH;
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else
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return OMAP_INIT_CONTEXT_UBOOT_FROM_NOR;
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#endif
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}
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#endif
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#endif
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