u-boot/arch/arm/mach-uniphier/soc_info.c
Masahiro Yamada 323d1f9d5b ARM: uniphier: allow to enable multiple SoCs
Before this commit, the Kconfig menu in mach-uniphier only allowed us
to choose one SoC to be compiled.  Each SoC has its own defconfig file
for the build-test coverage.  Consequently, some defconfig files are
duplicated with only the difference in CONFIG_DEFAULT_DEVICE_TREE and
CONFIG_{SOC_NAME}=y.

Now, most of board-specific parameters have been moved to device trees,
so it makes sense to include init code of multiple SoCs into a single
image as long as the SoCs have similar architecture.  In fact, some
SoCs of UniPhier family are very similar:
 - PH1-LD4 and PH1-sLD8
 - PH1-LD6b and ProXstream2 (will be added in the upcoming commit)

This commit will be helpful to merge some defconfig files for better
maintainability.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-09-25 00:58:38 +09:00

61 lines
1.2 KiB
C

/*
* Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/io.h>
#include <linux/types.h>
#include <mach/sg-regs.h>
#include <mach/soc_info.h>
#if UNIPHIER_MULTI_SOC
enum uniphier_soc_id uniphier_get_soc_type(void)
{
u32 revision = readl(SG_REVISION);
enum uniphier_soc_id ret;
switch ((revision & SG_REVISION_TYPE_MASK) >> SG_REVISION_TYPE_SHIFT) {
#ifdef CONFIG_ARCH_UNIPHIER_PH1_SLD3
case 0x25:
ret = SOC_UNIPHIER_PH1_SLD3;
break;
#endif
#ifdef CONFIG_ARCH_UNIPHIER_PH1_LD4
case 0x26:
ret = SOC_UNIPHIER_PH1_LD4;
break;
#endif
#ifdef CONFIG_ARCH_UNIPHIER_PH1_PRO4
case 0x28:
ret = SOC_UNIPHIER_PH1_PRO4;
break;
#endif
#ifdef CONFIG_ARCH_UNIPHIER_PH1_SLD8
case 0x29:
ret = SOC_UNIPHIER_PH1_SLD8;
break;
#endif
#ifdef CONFIG_ARCH_UNIPHIER_PH1_PRO5
case 0x2A:
ret = SOC_UNIPHIER_PH1_PRO5;
break;
#endif
#ifdef CONFIG_ARCH_UNIPHIER_PROXSTREAM2
case 0x2E:
ret = SOC_UNIPHIER_PROXSTREAM2;
break;
#endif
#ifdef CONFIG_ARCH_UNIPHIER_PH1_LD6B
case 0x2F:
ret = SOC_UNIPHIER_PH1_LD6B;
break;
#endif
default:
ret = SOC_UNIPHIER_UNKNOWN;
break;
}
return ret;
}
#endif