mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-31 16:31:25 +01:00
a93fbf4a78
In Linux, CONFIG_ARCH_OMAP2PLUS is used for OMAP2 or later SoCs. Rename CONFIG_ARCH_OMAP2 to CONFIG_ARCH_OMAP2PLUS to follow this naming. Move the OMAP2+ board/SoC choice down to mach-omap2/Kconfig to slim down the arch/arm/Kconfig level. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Tom Rini <trini@konsulko.com>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
|
|
* (C) Copyright 2014
|
|
* Texas Instruments, <www.ti.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
#ifndef _TI_COMMON_SYS_PROTO_H_
|
|
#define _TI_COMMON_SYS_PROTO_H_
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#ifdef CONFIG_ARCH_OMAP2PLUS
|
|
#define TI_ARMV7_DRAM_ADDR_SPACE_START 0x80000000
|
|
#define TI_ARMV7_DRAM_ADDR_SPACE_END 0xFFFFFFFF
|
|
|
|
#define OMAP_INIT_CONTEXT_SPL 0
|
|
#define OMAP_INIT_CONTEXT_UBOOT_FROM_NOR 1
|
|
#define OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL 2
|
|
#define OMAP_INIT_CONTEXT_UBOOT_AFTER_CH 3
|
|
|
|
static inline u32 running_from_sdram(void)
|
|
{
|
|
u32 pc;
|
|
asm volatile ("mov %0, pc" : "=r" (pc));
|
|
return ((pc >= TI_ARMV7_DRAM_ADDR_SPACE_START) &&
|
|
(pc < TI_ARMV7_DRAM_ADDR_SPACE_END));
|
|
}
|
|
|
|
static inline u8 uboot_loaded_by_spl(void)
|
|
{
|
|
/*
|
|
* u-boot can be running from sdram either because of configuration
|
|
* Header or by SPL. If because of CH, then the romcode sets the
|
|
* CHSETTINGS executed bit to true in the boot parameter structure that
|
|
* it passes to the bootloader.This parameter is stored in the ch_flags
|
|
* variable by both SPL and u-boot.Check out for CHSETTINGS, which is a
|
|
* mandatory section if CH is present.
|
|
*/
|
|
if (gd->arch.omap_ch_flags & CH_FLAGS_CHSETTINGS)
|
|
return 0;
|
|
else
|
|
return running_from_sdram();
|
|
}
|
|
|
|
/*
|
|
* The basic hardware init of OMAP(s_init()) can happen in 4
|
|
* different contexts:
|
|
* 1. SPL running from SRAM
|
|
* 2. U-Boot running from FLASH
|
|
* 3. Non-XIP U-Boot loaded to SDRAM by SPL
|
|
* 4. Non-XIP U-Boot loaded to SDRAM by ROM code using the
|
|
* Configuration Header feature
|
|
*
|
|
* This function finds this context.
|
|
* Defining as inline may help in compiling out unused functions in SPL
|
|
*/
|
|
static inline u32 omap_hw_init_context(void)
|
|
{
|
|
#ifdef CONFIG_SPL_BUILD
|
|
return OMAP_INIT_CONTEXT_SPL;
|
|
#else
|
|
if (uboot_loaded_by_spl())
|
|
return OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL;
|
|
else if (running_from_sdram())
|
|
return OMAP_INIT_CONTEXT_UBOOT_AFTER_CH;
|
|
else
|
|
return OMAP_INIT_CONTEXT_UBOOT_FROM_NOR;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#endif
|