diff options
| author | Alexey Brodkin | 2018-10-02 11:42:23 +0300 |
|---|---|---|
| committer | Alexey Brodkin | 2018-10-05 16:55:42 +0300 |
| commit | 7fe46b969def8537729b4a73e82c93d431f0b752 (patch) | |
| tree | 95e43eabbf3979fc0f384a4f2aec9aa9768d08cc | |
| parent | c3dcd508b66b5a10bd3d18f37d3367413b0d66c0 (diff) | |
ARC: Implement print_cpuinfo()
Once we enable DISPLAY_CPUINFO for ARC we'll see
ARC core family and version printed on boot.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
| -rw-r--r-- | arch/arc/lib/cpu.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/arch/arc/lib/cpu.c b/arch/arc/lib/cpu.c index cb95e06e931..50cd7cdb610 100644 --- a/arch/arc/lib/cpu.c +++ b/arch/arc/lib/cpu.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0+ /* - * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. + * Copyright (C) 2013-2014, 2018 Synopsys, Inc. All rights reserved. */ #include <common.h> @@ -33,3 +33,36 @@ int dram_init(void) { return 0; } + +#ifdef CONFIG_DISPLAY_CPUINFO +const char *decode_identity(void) +{ + int arcver = read_aux_reg(ARC_AUX_IDENTITY) & 0xff; + + switch (arcver) { + /* ARCompact cores */ + case 0x32: return "ARC 700 v4.4-4.5"; + case 0x33: return "ARC 700 v4.6-v4.9"; + case 0x34: return "ARC 700 v4.10"; + case 0x35: return "ARC 700 v4.11"; + + /* ARCv2 cores */ + case 0x41: return "ARC EM v1.1a"; + case 0x42: return "ARC EM v3.0"; + case 0x43: return "ARC EM v4.0"; + case 0x50: return "ARC HS v1.0"; + case 0x51: return "ARC EM v2.0"; + case 0x52: return "ARC EM v2.1"; + case 0x53: return "ARC HS v3.0"; + case 0x54: return "ARC HS v4.0"; + + default: return "Unknown ARC core"; + } +} + +int print_cpuinfo(void) +{ + printf("CPU: %s\n", decode_identity()); + return 0; +} +#endif /* CONFIG_DISPLAY_CPUINFO */ |