diff options
Diffstat (limited to 'arch/arm/mach-uniphier/cpu_info.c')
| -rw-r--r-- | arch/arm/mach-uniphier/cpu_info.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/cpu_info.c b/arch/arm/mach-uniphier/cpu_info.c new file mode 100644 index 0000000000..13a0b1e48f --- /dev/null +++ b/arch/arm/mach-uniphier/cpu_info.c @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2013-2014 Panasonic Corporation + * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <mach/sg-regs.h> + +int print_cpuinfo(void) +{ + u32 revision, type, model, rev, required_model = 1, required_rev = 1; + + revision = readl(SG_REVISION); + type = (revision & SG_REVISION_TYPE_MASK) >> SG_REVISION_TYPE_SHIFT; + model = (revision & SG_REVISION_MODEL_MASK) >> SG_REVISION_MODEL_SHIFT; + rev = (revision & SG_REVISION_REV_MASK) >> SG_REVISION_REV_SHIFT; + + puts("CPU: "); + + switch (type) { + case 0x25: + puts("PH1-sLD3 (MN2WS0220)"); + required_model = 2; + break; + case 0x26: + puts("PH1-LD4 (MN2WS0250)"); + required_rev = 2; + break; + case 0x28: + puts("PH1-Pro4 (MN2WS0230)"); + break; + case 0x29: + puts("PH1-sLD8 (MN2WS0270)"); + break; + default: + printf("Unknown Processor ID (0x%x)\n", revision); + return -1; + } + + if (model > 1) + printf(" model %d", model); + + printf(" (rev. %d)\n", rev); + + if (model < required_model) { + printf("Sorry, this model is not supported.\n"); + printf("Required model is %d.", required_model); + return -1; + } else if (rev < required_rev) { + printf("Sorry, this revision is not supported.\n"); + printf("Required revision is %d.", required_rev); + return -1; + } + + return 0; +} |