u-boot/arch/arm/mach-uniphier/soc-info.c
Masahiro Yamada d41b358fb3 ARM: uniphier: de-couple SG macros into base address and offset
The SG_* macros represent the address of SoC-glue registers.
For a planned new SoC, its base address will be changed.

Turn the SG_* macros into the offset from the base address.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-07-10 22:42:00 +09:00

34 lines
704 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <linux/io.h>
#include <linux/types.h>
#include "sg-regs.h"
#include "soc-info.h"
static unsigned int __uniphier_get_revision_field(unsigned int mask,
unsigned int shift)
{
u32 revision = readl(sg_base + SG_REVISION);
return (revision >> shift) & mask;
}
unsigned int uniphier_get_soc_id(void)
{
return __uniphier_get_revision_field(0xff, 16);
}
unsigned int uniphier_get_soc_model(void)
{
return __uniphier_get_revision_field(0x7, 8);
}
unsigned int uniphier_get_soc_revision(void)
{
return __uniphier_get_revision_field(0x1f, 0);
}