diff options
| author | Marek Vasut <marex@denx.de> | 2017-04-19 13:19:02 +0200 |
|---|---|---|
| committer | Ley Foon Tan <ley.foon.tan@intel.com> | 2017-05-08 16:59:19 +0800 |
| commit | edebea98777d7090ea14bdce2e38e6798557729d (patch) | |
| tree | 42d00a6c8e42ed6d2c04bf8d78c21fc2a0247ccf /arch/nios2/kernel | |
| parent | 23460839b983d5d8d47fe90f341599f66523dd81 (diff) | |
| download | linux-edebea98777d7090ea14bdce2e38e6798557729d.tar.bz2 | |
nios2: Add CDX support
Add support for the CDX Code Density Extensions present in
Nios II R2 . This introduces new 16bit instruction set to
improve code density while retaining support for the 32bit
Nios II R2 instructions.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Ley Foon Tan <lftan@altera.com>
Diffstat (limited to 'arch/nios2/kernel')
| -rw-r--r-- | arch/nios2/kernel/cpuinfo.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/nios2/kernel/cpuinfo.c b/arch/nios2/kernel/cpuinfo.c index 4c84fec34882..93207718bb22 100644 --- a/arch/nios2/kernel/cpuinfo.c +++ b/arch/nios2/kernel/cpuinfo.c @@ -68,6 +68,7 @@ void __init setup_cpuinfo(void) cpuinfo.has_mul = of_property_read_bool(cpu, "altr,has-mul"); cpuinfo.has_mulx = of_property_read_bool(cpu, "altr,has-mulx"); cpuinfo.has_bmx = of_property_read_bool(cpu, "altr,has-bmx"); + cpuinfo.has_cdx = of_property_read_bool(cpu, "altr,has-cdx"); cpuinfo.mmu = of_property_read_bool(cpu, "altr,has-mmu"); if (IS_ENABLED(CONFIG_NIOS2_HW_DIV_SUPPORT) && !cpuinfo.has_div) @@ -82,6 +83,9 @@ void __init setup_cpuinfo(void) if (IS_ENABLED(CONFIG_NIOS2_BMX_SUPPORT) && !cpuinfo.has_bmx) err_cpu("BMX"); + if (IS_ENABLED(CONFIG_NIOS2_CDX_SUPPORT) && !cpuinfo.has_cdx) + err_cpu("CDX"); + cpuinfo.tlb_num_ways = fcpu(cpu, "altr,tlb-num-ways"); if (!cpuinfo.tlb_num_ways) panic("altr,tlb-num-ways can't be 0. Please check your hardware " @@ -148,11 +152,13 @@ static int show_cpuinfo(struct seq_file *m, void *v) " MUL:\t\t%s\n" " MULX:\t\t%s\n" " DIV:\t\t%s\n" - " BMX:\t\t%s\n", + " BMX:\t\t%s\n" + " CDX:\t\t%s\n", cpuinfo.has_mul ? "yes" : "no", cpuinfo.has_mulx ? "yes" : "no", cpuinfo.has_div ? "yes" : "no", - cpuinfo.has_bmx ? "yes" : "no"); + cpuinfo.has_bmx ? "yes" : "no", + cpuinfo.has_cdx ? "yes" : "no"); seq_printf(m, "Icache:\t\t%ukB, line length: %u\n", |