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author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-09-22 00:27:39 +0900 |
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committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-09-25 00:58:38 +0900 |
commit | 323d1f9d5bebfe55e97e23c8094055685665afef (patch) | |
tree | 4fe6b5ffd3aab68a945de9750d145514271d2321 /arch/arm/mach-uniphier/soc_info.c | |
parent | 5451b777de392043c03626f6cbbc3940c49c3417 (diff) | |
download | u-boot-imx-323d1f9d5bebfe55e97e23c8094055685665afef.zip u-boot-imx-323d1f9d5bebfe55e97e23c8094055685665afef.tar.gz u-boot-imx-323d1f9d5bebfe55e97e23c8094055685665afef.tar.bz2 |
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>
Diffstat (limited to 'arch/arm/mach-uniphier/soc_info.c')
-rw-r--r-- | arch/arm/mach-uniphier/soc_info.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/soc_info.c b/arch/arm/mach-uniphier/soc_info.c new file mode 100644 index 0000000..3e8e7f4 --- /dev/null +++ b/arch/arm/mach-uniphier/soc_info.c @@ -0,0 +1,61 @@ +/* + * 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 |