u-boot/arch/arm/include/asm/ti-common/sys_proto.h
Simon Glass 401d1c4f5d common: Drop asm/global_data.h from common header
Move this out of the common header and include it only where needed.  In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly.   Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-02-02 15:33:42 -05:00

73 lines
1.9 KiB
C

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2014
* Texas Instruments, <www.ti.com>
*/
#ifndef _TI_COMMON_SYS_PROTO_H_
#define _TI_COMMON_SYS_PROTO_H_
#include <asm/global_data.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